Analysis
- max time kernel
92s - max time network
156s - platform
windows10-2004_x64 - resource
win10v2004-20220414-en - submitted
21/05/2022, 01:25
General
- Target USD Account Details-GCH.exe
- Size 399KB
- Sample220521-btgddacdh7
- SHA256 d5d3cde374721294f774229ce8fa3cbf3edd4d3b489448ea7449ee63bbdc2c31
Malware Config
Extracted
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Protocol
smtp
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Host
smtp.privateemail.com
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Port
587
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Username
-
Password
$MKXG2eN$]mXD
Signatures
- 404 Keylogger
Information stealer and keylogger first seen in 2019.
- 404 Keylogger Main Executable 1 IoCs
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
- Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
- Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
- Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
- Suspicious use of SetThreadContext 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Suspicious behavior: EnumeratesProcesses 8 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 17 IoCs
- outlook_office_path 1 IoCs
- outlook_win_path 1 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\USD Account Details-GCH.exe"C:\Users\Admin\AppData\Local\Temp\USD Account Details-GCH.exe"1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\funzPnmsYUy" /XML "C:\Users\Admin\AppData\Local\Temp\tmp6968.tmp"2⤵
- Creates scheduled task(s)
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C:\Users\Admin\AppData\Local\Temp\USD Account Details-GCH.exe"{path}"2⤵
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C:\Users\Admin\AppData\Local\Temp\USD Account Details-GCH.exe"{path}"2⤵
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C:\Users\Admin\AppData\Local\Temp\USD Account Details-GCH.exe"{path}"2⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- outlook_office_path
- outlook_win_path
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
USD Account Details-GCH.exe.log
tmp6968.tmp
memory/1048-140-0x0000000000400000-0x0000000000422000-memory.dmp
memory/1048-142-0x0000000006780000-0x00000000067E6000-memory.dmp
memory/1048-143-0x0000000006E00000-0x0000000006FC2000-memory.dmp
memory/3176-133-0x0000000004E40000-0x0000000004E4A000-memory.dmp
memory/3176-134-0x0000000005E20000-0x0000000005EBC000-memory.dmp
memory/3176-132-0x00000000051C0000-0x0000000005252000-memory.dmp
memory/3176-130-0x00000000001C0000-0x000000000022C000-memory.dmp
memory/3176-131-0x0000000005670000-0x0000000005C14000-memory.dmp