Analysis
- max time kernel
145s - max time network
70s - platform
windows10_x64 - resource
win10v20210408 - submitted
25/06/2021, 21:08
General
- Target Mv KSL Seville agency appointment1.exe
- Size 672KB
- Sample210625-54sslcbema
- SHA256 27fdf4e6c757ef22eb4f0d1abf40a509dcd71bb19349f7f16fe21153c6b4e363
Malware Config
Extracted
-
agenttesla
-
https://api.telegram.org/bot1897716112:AAEAtOCkOV8umHBB93Og24bkiIdUKReGK44/sendDocument
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- AgentTesla Payload 3 IoCs
- 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.
- 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 3 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 11 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\Mv KSL Seville agency appointment1.exe"C:\Users\Admin\AppData\Local\Temp\Mv KSL Seville agency appointment1.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\DrdVPRvownlqZK" /XML "C:\Users\Admin\AppData\Local\Temp\tmp6235.tmp"2⤵
- Creates scheduled task(s)
-
-
C:\Users\Admin\AppData\Local\Temp\Mv KSL Seville agency appointment1.exe"{path}"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/860-123-0x0000000006750000-0x0000000006788000-memory.dmp
memory/860-114-0x00000000000A0000-0x00000000000A1000-memory.dmp
memory/860-118-0x0000000004AE0000-0x0000000004AE1000-memory.dmp
memory/860-119-0x0000000004BA0000-0x0000000004BA1000-memory.dmp
memory/860-120-0x00000000049E0000-0x00000000049E1000-memory.dmp
memory/860-121-0x0000000004E90000-0x0000000004E92000-memory.dmp
memory/860-117-0x0000000004A40000-0x0000000004A41000-memory.dmp
memory/860-116-0x0000000004F40000-0x0000000004F41000-memory.dmp
memory/860-122-0x0000000006690000-0x000000000670E000-memory.dmp
memory/1340-126-0x0000000000400000-0x000000000043C000-memory.dmp
memory/1340-132-0x0000000005080000-0x000000000557E000-memory.dmp
memory/1340-133-0x00000000051E0000-0x00000000051E1000-memory.dmp
memory/1340-134-0x0000000005CE0000-0x0000000005CE1000-memory.dmp