Analysis
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max time kernel
130s -
max time network
182s -
platform
windows10-2004_x64 -
resource
win10v2004-20220414-en -
submitted
21-05-2022 12:16
General
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Target
DOC#090900009.exe
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Size
858KB
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MD5
873ee9e180e146dbc58e236adc4859e2
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SHA1
244f6944163d7b56f41c8e6b321b66fbcced9e8c
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SHA256
a1b7b74f099ecb3e600271c2ed326aacaeece3eda474d5769c2839386fa0fc05
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SHA512
6feb78a2ea87f4cd0b676d8cadf92a74126d0658f96fc2e4e60baea17d99e97a5caffbf3737873ed9be07d18e5f1ce4f24fb3cb13fe535ea5cda0b0a21c098b8
Malware Config
Extracted
C:\Users\Admin\AppData\Local\Temp\F95B724EDE\Log.txt
masslogger
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 32 IoCs
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MassLogger log file 1 IoCs
Detects a log file produced by MassLogger.
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Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
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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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Accesses Microsoft Outlook profiles 1 TTPs 18 IoCs
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Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
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Suspicious use of SetThreadContext 1 IoCs
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Suspicious behavior: EnumeratesProcesses 32 IoCs
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Suspicious use of AdjustPrivilegeToken 2 IoCs
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Suspicious use of WriteProcessMemory 8 IoCs
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outlook_office_path 1 IoCs
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outlook_win_path 1 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\DOC#090900009.exe"C:\Users\Admin\AppData\Local\Temp\DOC#090900009.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\DOC#090900009.exe"C:\Users\Admin\AppData\Local\Temp\DOC#090900009.exe"2⤵
- Checks computer location settings
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
880KB
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Filesize
5.6MB
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Filesize
584KB
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Filesize
40KB
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Filesize
624KB
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Filesize
408KB
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Filesize
704KB
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Filesize
704KB
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Filesize
704KB
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Filesize
704KB
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Filesize
704KB
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Filesize
704KB
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Filesize
704KB
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Filesize
704KB
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Filesize
704KB
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Filesize
704KB
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Filesize
704KB
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Filesize
704KB
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Filesize
704KB
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Filesize
704KB
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Filesize
704KB
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Filesize
704KB
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Filesize
704KB
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Filesize
704KB
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Filesize
704KB
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Filesize
704KB
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Filesize
704KB
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Filesize
704KB
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Filesize
704KB
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Filesize
704KB
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Filesize
704KB
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Filesize
704KB
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Filesize
704KB
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Filesize
704KB
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Filesize
704KB
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Filesize
704KB
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Filesize
704KB
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Filesize
704KB
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Filesize
320KB