Analysis
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max time kernel
138s -
max time network
137s -
platform
windows7_x64 -
resource
win7v20201028 -
submitted
12-01-2021 07:06
General
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Target
594f1c723ce27b1fd3ca55b364bcd1c8.exe
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Size
735KB
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MD5
594f1c723ce27b1fd3ca55b364bcd1c8
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SHA1
02beeb703de1dd129f04fe034c119a835b134e45
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SHA256
992ad3ca073b6c7fd4de4a7b3d7139c7d794da8b0c2420963d802374c3ed968c
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SHA512
9ac5f20d252aeb7d7d333cb36834f622d542b60883179ec324819be4d5c11e0546ebb0f870e24c68409ba073e167f3322fc7abfc9ab23331f3f9236a8b2d9bbf
Malware Config
Extracted
agenttesla
https://api.telegram.org/bot1354395790:AAGs5t1VElMZzeygESEl5DtA0jHdLInLstE/sendDocument
Signatures
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AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
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AgentTesla Payload 4 IoCs
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Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
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Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
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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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Looks up external IP address via web service 2 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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Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
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Suspicious behavior: EnumeratesProcesses 3 IoCs
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Suspicious use of AdjustPrivilegeToken 2 IoCs
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Suspicious use of SetWindowsHookEx 1 IoCs
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Suspicious use of WriteProcessMemory 13 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\594f1c723ce27b1fd3ca55b364bcd1c8.exe"C:\Users\Admin\AppData\Local\Temp\594f1c723ce27b1fd3ca55b364bcd1c8.exe"1⤵
- 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\wyDcuqHDDDnjcR" /XML "C:\Users\Admin\AppData\Local\Temp\tmp9B55.tmp"2⤵
- Creates scheduled task(s)
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C:\Users\Admin\AppData\Local\Temp\594f1c723ce27b1fd3ca55b364bcd1c8.exe"{path}"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\Temp\tmp9B55.tmpMD5
871e75a2a36698d2145b4855264f9684
SHA1db53ea12245fb9f73daf2d8bd86465d7418b45cc
SHA2565cfa85b2698f4694f4a0d988890e31634804977f297064c0a54d728647930ef7
SHA5125bc715e8c8ffcf34e3a9a89e07fab1d05dc18e62cf3a5eadd2e89cf4ecc49c23be9d0c57fae0ac66b500cf5671150fcafd30ead739233eafb2d39857af203f4c
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memory/1008-9-0x0000000000400000-0x000000000043C000-memory.dmpFilesize
240KB
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memory/1008-10-0x00000000004376EE-mapping.dmp
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memory/1008-11-0x0000000000400000-0x000000000043C000-memory.dmpFilesize
240KB
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memory/1008-12-0x0000000000400000-0x000000000043C000-memory.dmpFilesize
240KB
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memory/1008-13-0x0000000074360000-0x0000000074A4E000-memory.dmpFilesize
6.9MB
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memory/1732-7-0x0000000000000000-mapping.dmp
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memory/1756-2-0x0000000074360000-0x0000000074A4E000-memory.dmpFilesize
6.9MB
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memory/1756-3-0x0000000000C80000-0x0000000000C81000-memory.dmpFilesize
4KB
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memory/1756-5-0x0000000000260000-0x000000000026E000-memory.dmpFilesize
56KB
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memory/1756-6-0x00000000052D0000-0x000000000535C000-memory.dmpFilesize
560KB