Analysis
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max time kernel
142s -
max time network
155s -
platform
windows10-2004_x64 -
resource
win10v2004-en-20220113 -
submitted
26-03-2022 06:22
Static task
static1
Behavioral task
behavioral1
Sample
ac4838da38ffb7ca95d3c7a6d4472577f8a37f575f68151db6c5aee8175bf8cb.exe
Resource
win7-20220311-en
Behavioral task
behavioral2
Sample
ac4838da38ffb7ca95d3c7a6d4472577f8a37f575f68151db6c5aee8175bf8cb.exe
Resource
win10v2004-en-20220113
General
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Target
ac4838da38ffb7ca95d3c7a6d4472577f8a37f575f68151db6c5aee8175bf8cb.exe
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Size
2.3MB
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MD5
f8c69df94419c5ba3460568086f4ad77
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SHA1
24acca8e69f8b99dd9b3db8d75a58b2aa4d33011
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SHA256
ac4838da38ffb7ca95d3c7a6d4472577f8a37f575f68151db6c5aee8175bf8cb
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SHA512
54ce4e9e52fa64123c75317a405c6b2e1a2f639f4deea1b8c76f13e34157ce36f3f361c1c3b3d9d5d9640e35a7b5139f66a86d3b99449c6562d218c0183a2432
Malware Config
Signatures
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MassLogger
Masslogger is a .NET stealer targeting passwords from browsers, email and cryptocurrency clients.
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MassLogger Main Payload 1 IoCs
resource yara_rule behavioral2/memory/3252-139-0x0000000000400000-0x000000000054C000-memory.dmp family_masslogger -
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 ac4838da38ffb7ca95d3c7a6d4472577f8a37f575f68151db6c5aee8175bf8cb.exe -
Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 3144 set thread context of 3252 3144 ac4838da38ffb7ca95d3c7a6d4472577f8a37f575f68151db6c5aee8175bf8cb.exe 90 -
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 2056 3252 WerFault.exe 90 -
Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
pid Process 4292 schtasks.exe -
Suspicious behavior: EnumeratesProcesses 1 IoCs
pid Process 3144 ac4838da38ffb7ca95d3c7a6d4472577f8a37f575f68151db6c5aee8175bf8cb.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 3144 ac4838da38ffb7ca95d3c7a6d4472577f8a37f575f68151db6c5aee8175bf8cb.exe -
Suspicious use of WriteProcessMemory 11 IoCs
description pid Process procid_target PID 3144 wrote to memory of 4292 3144 ac4838da38ffb7ca95d3c7a6d4472577f8a37f575f68151db6c5aee8175bf8cb.exe 88 PID 3144 wrote to memory of 4292 3144 ac4838da38ffb7ca95d3c7a6d4472577f8a37f575f68151db6c5aee8175bf8cb.exe 88 PID 3144 wrote to memory of 4292 3144 ac4838da38ffb7ca95d3c7a6d4472577f8a37f575f68151db6c5aee8175bf8cb.exe 88 PID 3144 wrote to memory of 3252 3144 ac4838da38ffb7ca95d3c7a6d4472577f8a37f575f68151db6c5aee8175bf8cb.exe 90 PID 3144 wrote to memory of 3252 3144 ac4838da38ffb7ca95d3c7a6d4472577f8a37f575f68151db6c5aee8175bf8cb.exe 90 PID 3144 wrote to memory of 3252 3144 ac4838da38ffb7ca95d3c7a6d4472577f8a37f575f68151db6c5aee8175bf8cb.exe 90 PID 3144 wrote to memory of 3252 3144 ac4838da38ffb7ca95d3c7a6d4472577f8a37f575f68151db6c5aee8175bf8cb.exe 90 PID 3144 wrote to memory of 3252 3144 ac4838da38ffb7ca95d3c7a6d4472577f8a37f575f68151db6c5aee8175bf8cb.exe 90 PID 3144 wrote to memory of 3252 3144 ac4838da38ffb7ca95d3c7a6d4472577f8a37f575f68151db6c5aee8175bf8cb.exe 90 PID 3144 wrote to memory of 3252 3144 ac4838da38ffb7ca95d3c7a6d4472577f8a37f575f68151db6c5aee8175bf8cb.exe 90 PID 3144 wrote to memory of 3252 3144 ac4838da38ffb7ca95d3c7a6d4472577f8a37f575f68151db6c5aee8175bf8cb.exe 90
Processes
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C:\Users\Admin\AppData\Local\Temp\ac4838da38ffb7ca95d3c7a6d4472577f8a37f575f68151db6c5aee8175bf8cb.exe"C:\Users\Admin\AppData\Local\Temp\ac4838da38ffb7ca95d3c7a6d4472577f8a37f575f68151db6c5aee8175bf8cb.exe"1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3144 -
C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\xCtDXgUtklECz" /XML "C:\Users\Admin\AppData\Local\Temp\tmpF55A.tmp"2⤵
- Creates scheduled task(s)
PID:4292
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C:\Users\Admin\AppData\Local\Temp\ac4838da38ffb7ca95d3c7a6d4472577f8a37f575f68151db6c5aee8175bf8cb.exe"C:\Users\Admin\AppData\Local\Temp\ac4838da38ffb7ca95d3c7a6d4472577f8a37f575f68151db6c5aee8175bf8cb.exe"2⤵PID:3252
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 3252 -s 9683⤵
- Program crash
PID:2056
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 3252 -ip 32521⤵PID:4688