Analysis
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max time kernel
133s -
max time network
154s -
platform
windows10-2004_x64 -
resource
win10v2004-en-20220113 -
submitted
06-03-2022 11:52
Static task
static1
Behavioral task
behavioral1
Sample
buijp.exe
Resource
win7-20220223-en
Behavioral task
behavioral2
Sample
buijp.exe
Resource
win10v2004-en-20220113
General
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Target
buijp.exe
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Size
1.5MB
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MD5
d9dd93dbce60481ae945dd6b9ba3e830
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SHA1
a01dd4dbe77a99de0cdcc3c2830641ff79a2d892
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SHA256
c1237d0e517abc7cd15bb55110196247b1f6ec397c28b8b2bdfba86dc5c8805f
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SHA512
8c48538a643fef1811689af9a893527776c501e9ed40223528ab80901be2a182f326c0be13dcfe1e30f14f69f77323ab8138728bc3ef4ae77c40e17a1c505c46
Malware Config
Extracted
blackguard
https://api.telegram.org/bot5000057429:AAGzxzARC3DPcOsfaw0jKHEyHfyEfZqVYQM/sendMessage?chat_id=1283089701
Signatures
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BlackGuard
Infostealer first seen in Late 2021.
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Downloads MZ/PE file
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Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-1346565761-3498240568-4147300184-1000\Control Panel\International\Geo\Nation buijp.exe -
Loads dropped DLL 1 IoCs
pid Process 1872 buijp.exe -
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Legitimate hosting services abused for malware hosting/C2 1 TTPs
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Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Program crash 1 IoCs
pid pid_target Process procid_target 1848 1872 WerFault.exe 78 -
Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 2876 powershell.exe 2876 powershell.exe 1872 buijp.exe 1872 buijp.exe 1872 buijp.exe 1872 buijp.exe 1872 buijp.exe 1872 buijp.exe 1872 buijp.exe 1872 buijp.exe 1872 buijp.exe 1872 buijp.exe 1872 buijp.exe 1872 buijp.exe 1872 buijp.exe 1872 buijp.exe 1872 buijp.exe 1872 buijp.exe 1872 buijp.exe 1872 buijp.exe 1872 buijp.exe 1872 buijp.exe 1872 buijp.exe 1872 buijp.exe 1872 buijp.exe 1872 buijp.exe 1872 buijp.exe 1872 buijp.exe 1872 buijp.exe 1872 buijp.exe 1872 buijp.exe 1872 buijp.exe 1872 buijp.exe 1872 buijp.exe 1872 buijp.exe 1872 buijp.exe 1872 buijp.exe 1872 buijp.exe 1872 buijp.exe 1872 buijp.exe 1872 buijp.exe 1872 buijp.exe 1872 buijp.exe 1872 buijp.exe 1872 buijp.exe 1872 buijp.exe 1872 buijp.exe 1872 buijp.exe 1872 buijp.exe 1872 buijp.exe 1872 buijp.exe 1872 buijp.exe 1872 buijp.exe 1872 buijp.exe 1872 buijp.exe 1872 buijp.exe 1872 buijp.exe 1872 buijp.exe 1872 buijp.exe 1872 buijp.exe 1872 buijp.exe 1872 buijp.exe 1872 buijp.exe 1872 buijp.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeDebugPrivilege 2876 powershell.exe Token: SeDebugPrivilege 1872 buijp.exe -
Suspicious use of WriteProcessMemory 2 IoCs
description pid Process procid_target PID 1872 wrote to memory of 2876 1872 buijp.exe 80 PID 1872 wrote to memory of 2876 1872 buijp.exe 80
Processes
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C:\Users\Admin\AppData\Local\Temp\buijp.exe"C:\Users\Admin\AppData\Local\Temp\buijp.exe"1⤵
- Checks computer location settings
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1872 -
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -inputformat none -outputformat none -NonInteractive -Command Add - MpPreference - ExclusionPath C:\2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2876
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C:\Windows\system32\WerFault.exeC:\Windows\system32\WerFault.exe -u -p 1872 -s 24042⤵
- Program crash
PID:1848
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C:\Windows\system32\WerFault.exeC:\Windows\system32\WerFault.exe -pss -s 408 -p 1872 -ip 18721⤵PID:1604