Analysis
- max time kernel
28s - max time network
30s - platform
windows7_x64 - resource
win7-20230220-en - resource tags
- submitted
15/03/2023, 22:59
General
- Target final docs..exe
- Size 266KB
- Sample230315-2ydfdsfg59
- SHA256 fbdd8b241b54668968f0b858dece23e6d4667e5c0e628df2158a3b2cd50d20f1
Malware Config
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- Executes dropped EXE 2 IoCs
- Loads dropped DLL 3 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.
- Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
- Suspicious use of SetThreadContext 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- Suspicious behavior: MapViewOfSection 1 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of WriteProcessMemory 9 IoCs
- outlook_office_path 1 IoCs
- outlook_win_path 1 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\final docs..exe"C:\Users\Admin\AppData\Local\Temp\final docs..exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\otbcma.exe"C:\Users\Admin\AppData\Local\Temp\otbcma.exe" C:\Users\Admin\AppData\Local\Temp\xkebxjge.g2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\otbcma.exe"C:\Users\Admin\AppData\Local\Temp\otbcma.exe"3⤵
- Executes dropped EXE
- Accesses Microsoft Outlook profiles
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
ohmdh.t
otbcma.exe
otbcma.exe
otbcma.exe
otbcma.exe
xkebxjge.g
otbcma.exe
otbcma.exe
otbcma.exe
memory/1860-69-0x0000000000400000-0x0000000000441000-memory.dmp
memory/1860-73-0x0000000000400000-0x0000000000441000-memory.dmp
memory/1860-74-0x00000000004F0000-0x0000000000520000-memory.dmp
memory/1860-76-0x0000000000470000-0x00000000004B0000-memory.dmp
memory/1860-75-0x0000000000400000-0x0000000000441000-memory.dmp