Analysis
- max time kernel
54s - max time network
145s - platform
windows10_x64 - resource
win10v20201028 - submitted
03/11/2020, 08:08
General
- Target 标准的样本格式 更新.xlsx.exe
- Size 806KB
- Sample201103-pk22d5393e
- SHA256 2b289b1dc38fa9bbd5086bb53a41d36466f899df423df495ae8e7bfd9b06e846
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
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Password
$MKXG2eN$]mXD
Signatures
- 404 Keylogger
Information stealer and keylogger first seen in 2019.
- 404 Keylogger Main Executable 2 IoCs
- 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.
- 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
- Suspicious behavior: EnumeratesProcesses 5 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 14 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\标准的样本格式 更新.xlsx.exe"C:\Users\Admin\AppData\Local\Temp\标准的样本格式 更新.xlsx.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\标准的样本格式 更新.xlsx.exe"{path}"2⤵
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C:\Users\Admin\AppData\Local\Temp\标准的样本格式 更新.xlsx.exe"{path}"2⤵
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C:\Users\Admin\AppData\Local\Temp\标准的样本格式 更新.xlsx.exe"{path}"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/3372-7-0x0000000008D10000-0x0000000008D26000-memory.dmp
memory/3372-9-0x0000000009660000-0x0000000009661000-memory.dmp
memory/3372-4-0x0000000005800000-0x0000000005801000-memory.dmp
memory/3372-5-0x0000000005780000-0x0000000005781000-memory.dmp
memory/3372-6-0x0000000009130000-0x0000000009131000-memory.dmp
memory/3372-0-0x0000000073940000-0x000000007402E000-memory.dmp
memory/3372-8-0x0000000008FA0000-0x000000000903D000-memory.dmp
memory/3372-3-0x0000000005C60000-0x0000000005C61000-memory.dmp
memory/3372-1-0x0000000000D40000-0x0000000000D41000-memory.dmp
memory/3532-10-0x0000000000400000-0x0000000000422000-memory.dmp
memory/3532-13-0x0000000073940000-0x000000007402E000-memory.dmp
memory/3532-18-0x0000000006270000-0x0000000006271000-memory.dmp
memory/3532-19-0x00000000067F0000-0x00000000067F1000-memory.dmp