Analysis
- max time kernel
134s - max time network
135s - platform
windows10_x64 - resource
win10v20210410 - submitted
05/08/2021, 08:28
General
- Target New Submission.exe
- Size 1002KB
- Sample210805-n8gcekmwp2
- SHA256 b175b47baedbb3fca9f91e253535b99d735af5e9ea14e9644b2ce4851f8849ff
Malware Config
Extracted
-
agenttesla
-
https://api.telegram.org/bot1933251860:AAFuYn-2C5PS62uDENNzqPCQ3_4rIgpa-ZI/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 WriteProcessMemory 11 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\New Submission.exe"C:\Users\Admin\AppData\Local\Temp\New Submission.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\pptNxy" /XML "C:\Users\Admin\AppData\Local\Temp\tmpC7AB.tmp"2⤵
- Creates scheduled task(s)
-
-
C:\Users\Admin\AppData\Local\Temp\New Submission.exe"C:\Users\Admin\AppData\Local\Temp\New Submission.exe"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/1168-137-0x0000000005F30000-0x0000000005F31000-memory.dmp
memory/1168-136-0x0000000005780000-0x0000000005781000-memory.dmp
memory/1168-135-0x00000000052D0000-0x00000000057CE000-memory.dmp
memory/1168-128-0x0000000000400000-0x000000000043C000-memory.dmp
memory/4048-119-0x00000000052F0000-0x00000000052F1000-memory.dmp
memory/4048-124-0x0000000008A70000-0x0000000008B09000-memory.dmp
memory/4048-125-0x0000000007530000-0x0000000007568000-memory.dmp
memory/4048-123-0x0000000006FF0000-0x000000000706F000-memory.dmp
memory/4048-122-0x00000000057E0000-0x00000000057F3000-memory.dmp
memory/4048-121-0x0000000008930000-0x0000000008931000-memory.dmp
memory/4048-120-0x0000000002C10000-0x0000000002C11000-memory.dmp
memory/4048-114-0x0000000000810000-0x0000000000811000-memory.dmp
memory/4048-118-0x00000000051A0000-0x00000000051A1000-memory.dmp
memory/4048-117-0x0000000005210000-0x0000000005211000-memory.dmp
memory/4048-116-0x0000000005800000-0x0000000005801000-memory.dmp