Analysis
- max time kernel
135s - max time network
150s - platform
windows10_x64 - resource
win10v20210410 - submitted
03/08/2021, 14:59
General
- Target 0fb2f4996136239c4f15c8d8da1d525b.exe
- Size 968KB
- Sample210803-k3x9q2md4e
- SHA256 43529598ea9bcb9fb6fd47e9554afbc39388856dee239751ba45c18186ac7346
Malware Config
Extracted
-
agenttesla
-
https://api.telegram.org/bot1732643706:AAFJG1wOglHxhh3YyS22_EfLYjC92Q9TfLM/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 5 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 14 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\0fb2f4996136239c4f15c8d8da1d525b.exe"C:\Users\Admin\AppData\Local\Temp\0fb2f4996136239c4f15c8d8da1d525b.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\fwboxorLABJd" /XML "C:\Users\Admin\AppData\Local\Temp\tmpD259.tmp"2⤵
- Creates scheduled task(s)
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C:\Users\Admin\AppData\Local\Temp\0fb2f4996136239c4f15c8d8da1d525b.exe"C:\Users\Admin\AppData\Local\Temp\0fb2f4996136239c4f15c8d8da1d525b.exe"2⤵
-
-
C:\Users\Admin\AppData\Local\Temp\0fb2f4996136239c4f15c8d8da1d525b.exe"C:\Users\Admin\AppData\Local\Temp\0fb2f4996136239c4f15c8d8da1d525b.exe"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/3544-138-0x0000000006070000-0x0000000006071000-memory.dmp
memory/3544-137-0x0000000005350000-0x0000000005351000-memory.dmp
memory/3544-136-0x0000000005380000-0x000000000587E000-memory.dmp
memory/3544-129-0x0000000000400000-0x000000000043C000-memory.dmp
memory/3972-120-0x0000000005520000-0x0000000005521000-memory.dmp
memory/3972-124-0x0000000005710000-0x000000000571D000-memory.dmp
memory/3972-125-0x0000000007CA0000-0x0000000007D3E000-memory.dmp
memory/3972-126-0x000000000A3C0000-0x000000000A3FA000-memory.dmp
memory/3972-123-0x0000000007700000-0x000000000779E000-memory.dmp
memory/3972-121-0x0000000005390000-0x0000000005391000-memory.dmp
memory/3972-122-0x0000000005180000-0x000000000521C000-memory.dmp
memory/3972-114-0x0000000000920000-0x0000000000921000-memory.dmp
memory/3972-119-0x0000000005320000-0x0000000005321000-memory.dmp
memory/3972-118-0x00000000053A0000-0x00000000053A1000-memory.dmp
memory/3972-117-0x00000000058A0000-0x00000000058A1000-memory.dmp
memory/3972-116-0x0000000005220000-0x0000000005221000-memory.dmp