RansomWare_GermanWiper
YARA-2019-0013
Critical
general
Active
Detects RansomWare GermanWiper in Memory or in unpacked state
RansomWare_GermanWiper.yar
Valid Syntax
rule RansomWare_GermanWiper {
meta:
description = "Detects RansomWare GermanWiper in Memory or in unpacked state"
author = "Frank Boldewin (@r3c0nst)"
reference = "https://twitter.com/r3c0nst/status/1158326526766657538"
date = "2019-08-05"
hash_packed = "41364427dee49bf544dcff61a6899b3b7e59852435e4107931e294079a42de7c"
hash_unpacked = "708967cad421bb2396017bdd10a42e6799da27e29264f4b5fb095c0e3503e447"
strings:
$PurgeCode = {6a 00 8b 47 08 50 6a 00 6a 01 e8 ?? ?? ?? ?? 50 e8 ?? ?? ?? ?? 8b f0 8b d7 8b c3 e8} // code patterns for process kills
$Mutex1 = "HSDFSD-HFSD-3241-91E7-ASDGSDGHH" nocase ascii
$Mutex2 = "cFgxTERNWEVhM2V" nocase ascii
$ProcessKill1 = "oracle.exe" nocase ascii
$ProcessKill2 = "sqbcoreservice.exe" nocase ascii
$ProcessKill3 = "isqlplussvc.exe" nocase ascii
$ProcessKill4 = "mysqld.exe" nocase ascii
$KillShadowCopies = "vssadmin.exe delete shadows" nocase ascii
$Domain1 = "cdnjs.cloudflare.com" nocase ascii
$Domain2 = "expandingdelegation.top" nocase ascii
$RansomNote = "Entschluesselungs_Anleitung.html" nocase ascii
condition:
uint16(0) == 0x5A4D and filesize < 1000KB and 5 of them
}
Rule Metadata
description
Detects RansomWare GermanWiper in Memory or in unpacked state
author
Frank Boldewin (@r3c0nst)
reference
https://twitter.com/r3c0nst/status/1158326526766657538
date
2019-08-05
hash_packed
41364427dee49bf544dcff61a6899b3b7e59852435e4107931e294079a42de7c
hash_unpacked
708967cad421bb2396017bdd10a42e6799da27e29264f4b5fb095c0e3503e447
String Definitions
{"name":"$PurgeCode","value":"{6a 00 8b 47 08 50 6a 00 6a 01 e8 ?? ?? ?? ?? 50 e8 ?? ?? ?? ?? 8b f0 8b d7 8b c3 e8} \/\/ code patterns for process kills"}
{"name":"$Mutex1","value":"\"HSDFSD-HFSD-3241-91E7-ASDGSDGHH\" nocase ascii"}
{"name":"$Mutex2","value":"\"cFgxTERNWEVhM2V\" nocase ascii"}
{"name":"$ProcessKill1","value":"\"oracle.exe\" nocase ascii"}
{"name":"$ProcessKill2","value":"\"sqbcoreservice.exe\" nocase ascii"}
{"name":"$ProcessKill3","value":"\"isqlplussvc.exe\" nocase ascii"}
{"name":"$ProcessKill4","value":"\"mysqld.exe\" nocase ascii"}
{"name":"$KillShadowCopies","value":"\"vssadmin.exe delete shadows\" nocase ascii"}
{"name":"$Domain1","value":"\"cdnjs.cloudflare.com\" nocase ascii"}
{"name":"$Domain2","value":"\"expandingdelegation.top\" nocase ascii"}
{"name":"$RansomNote","value":"\"Entschluesselungs_Anleitung.html\" nocase ascii"}
Threat Analysis
This YARA rule is designed to detect general threats.
Severity Level: Critical
The rule uses pattern matching to identify specific byte sequences, strings, or behavioral patterns associated with malicious activity.
Detection Capabilities
- File-based detection for executables and documents
- Memory scanning for running processes
- Network traffic analysis support
Command Line Usage
# Scan a single file yara RansomWare_GermanWiper.yar /path/to/suspicious/file # Scan a directory recursively yara -r RansomWare_GermanWiper.yar /path/to/directory/ # Scan with metadata output yara -m RansomWare_GermanWiper.yar target_file # Scan process memory (Linux) yara RansomWare_GermanWiper.yar /proc/[pid]/exe
Integration Examples
Python (yara-python)
import yara
rules = yara.compile(filepath='RansomWare_GermanWiper.yar')
matches = rules.match('/path/to/file')
ClamAV Integration
clamscan --yara-rules=RansomWare_GermanWiper.yar /path/to/scan
Rule Information
YARA ID
YARA-2019-0013
Author
Repository
Created
August 19, 2025
Last Updated
August 19, 2025
Last Imported
Never
Threat Intelligence
Risk Level
Critical
Category
general
Detection Confidence
Analysis Pending
False Positive Rate
Not Available
Last Seen in Wild
No Data
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