Analysis
- max time kernel
128s - max time network
110s - platform
windows10_x64 - resource
win10v20210410 - submitted
09/05/2021, 09:15
General
- Target MSC-BL Draft-283930.exe
- Size 961KB
- Sample210509-79x6fcvrb6
- SHA256 0dea09c30d8e850fab893b3f17f9bad6898c7e77bb690ecfe523681ca0f07e95
Malware Config
Extracted
-
agenttesla
-
Protocol
smtp
-
Host
webmail.mdist.us
-
Port
587
-
Username
-
Password
Jg#4321
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- AgentTesla Payload 2 IoCs
- Drops file in Drivers directory 1 IoCs
- Adds Run key to start application 2 TTPs 1 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.
- 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 WriteProcessMemory 11 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\MSC-BL Draft-283930.exe"C:\Users\Admin\AppData\Local\Temp\MSC-BL Draft-283930.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\IlNXPNalAxlULY" /XML "C:\Users\Admin\AppData\Local\Temp\tmpA464.tmp"2⤵
- Creates scheduled task(s)
-
-
C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"{path}"2⤵
- Drops file in Drivers directory
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/2768-134-0x0000000005EA0000-0x0000000005EA1000-memory.dmp
memory/2768-133-0x00000000051F0000-0x00000000051F1000-memory.dmp
memory/2768-132-0x0000000005110000-0x0000000005111000-memory.dmp
memory/2768-126-0x0000000000400000-0x000000000043C000-memory.dmp
memory/3232-119-0x0000000004B60000-0x0000000004B61000-memory.dmp
memory/3232-123-0x000000000AD20000-0x000000000AD64000-memory.dmp
memory/3232-122-0x0000000008530000-0x00000000085B9000-memory.dmp
memory/3232-121-0x0000000006740000-0x000000000674E000-memory.dmp
memory/3232-120-0x0000000006EB0000-0x0000000006EB1000-memory.dmp
memory/3232-114-0x00000000000D0000-0x00000000000D1000-memory.dmp
memory/3232-118-0x0000000004A00000-0x0000000004EFE000-memory.dmp
memory/3232-117-0x0000000004A00000-0x0000000004A01000-memory.dmp
memory/3232-116-0x0000000004F00000-0x0000000004F01000-memory.dmp