Analysis
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max time kernel
74s -
max time network
38s -
platform
windows7_x64 -
resource
win7-20230220-en -
resource tags
arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system -
submitted
31-03-2023 21:42
Behavioral task
behavioral1
Sample
yhjkjkgrgj.exe
Resource
win7-20230220-en
Behavioral task
behavioral2
Sample
yhjkjkgrgj.exe
Resource
win10v2004-20230221-en
General
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Target
yhjkjkgrgj.exe
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Size
3.2MB
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MD5
dce3c6ed046018eac08f82942401123d
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SHA1
a2556fd4c7bbd8cd3b30c2eaa6aad272e52a858d
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SHA256
6e178c0fb8198d21b85f9179c731a2e203e2c112bc017848c4b2361ef1411619
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SHA512
ce5ca34369629fe66fafcd2b94018464ecc3bdb08c2ee83c517921997975a75ae57720824abd23bca92ad664d1bd2ea3065ae248ffe9a0f6affc77156c90d88c
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SSDEEP
98304:sTdsIG91TVghsRfyX4hmE01E7oQWOq4+iPx:kWIk5RciR7cv
Malware Config
Extracted
blackguard
https://ritmflow.online/
Signatures
-
BlackGuard
Infostealer first seen in Late 2021.
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Program crash 1 IoCs
pid pid_target Process procid_target 1616 920 WerFault.exe 26 -
Suspicious use of AdjustPrivilegeToken 5 IoCs
description pid Process Token: SeDebugPrivilege 920 yhjkjkgrgj.exe Token: 33 1740 AUDIODG.EXE Token: SeIncBasePriorityPrivilege 1740 AUDIODG.EXE Token: 33 1740 AUDIODG.EXE Token: SeIncBasePriorityPrivilege 1740 AUDIODG.EXE -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 920 wrote to memory of 1616 920 yhjkjkgrgj.exe 28 PID 920 wrote to memory of 1616 920 yhjkjkgrgj.exe 28 PID 920 wrote to memory of 1616 920 yhjkjkgrgj.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\yhjkjkgrgj.exe"C:\Users\Admin\AppData\Local\Temp\yhjkjkgrgj.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:920 -
C:\Windows\system32\WerFault.exeC:\Windows\system32\WerFault.exe -u -p 920 -s 18402⤵
- Program crash
PID:1616
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C:\Windows\explorer.exe"C:\Windows\explorer.exe"1⤵PID:376
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C:\Windows\system32\AUDIODG.EXEC:\Windows\system32\AUDIODG.EXE 0x5681⤵
- Suspicious use of AdjustPrivilegeToken
PID:1740
Network
MITRE ATT&CK Matrix
Replay Monitor
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Downloads
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Filesize
61KB
MD5e71c8443ae0bc2e282c73faead0a6dd3
SHA10c110c1b01e68edfacaeae64781a37b1995fa94b
SHA25695b0a5acc5bf70d3abdfd091d0c9f9063aa4fde65bd34dbf16786082e1992e72
SHA512b38458c7fa2825afb72794f374827403d5946b1132e136a0ce075dfd351277cf7d957c88dc8a1e4adc3bcae1fa8010dae3831e268e910d517691de24326391a6
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Filesize
161KB
MD5be2bec6e8c5653136d3e72fe53c98aa3
SHA1a8182d6db17c14671c3d5766c72e58d87c0810de
SHA2561919aab2a820642490169bdc4e88bd1189e22f83e7498bf8ebdfb62ec7d843fd
SHA5120d1424ccdf0d53faf3f4e13d534e12f22388648aa4c23edbc503801e3c96b7f73c7999b760b5bef4b5e9dd923dffe21a21889b1ce836dd428420bf0f4f5327ff