Analysis
- max time kernel
123s - max time network
147s - platform
windows10_x64 - resource
win10-en-20210920 - submitted
01/10/2021, 06:38
General
- Target DHL FOB #IU37E77UYSVV.exe
- Size 962KB
- Sample211001-hd4masbad7
- SHA256 ea2e150b453af5ef1d129f5175af498b4a31c78bb244e3abd6878ccd43bd6735
Malware Config
Extracted
-
agenttesla
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Protocol
smtp
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Host
smtp.tranpotescamdonic.us
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Port
587
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Username
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Password
GXFc1@19H
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- AgentTesla Payload 2 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.
- 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 6 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of WriteProcessMemory 17 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\DHL FOB #IU37E77UYSVV.exe"C:\Users\Admin\AppData\Local\Temp\DHL FOB #IU37E77UYSVV.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\fyVwhDStgC" /XML "C:\Users\Admin\AppData\Local\Temp\tmp65A.tmp"2⤵
- Creates scheduled task(s)
-
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C:\Users\Admin\AppData\Local\Temp\DHL FOB #IU37E77UYSVV.exe"{path}"2⤵
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C:\Users\Admin\AppData\Local\Temp\DHL FOB #IU37E77UYSVV.exe"{path}"2⤵
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C:\Users\Admin\AppData\Local\Temp\DHL FOB #IU37E77UYSVV.exe"{path}"2⤵
- 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/3980-137-0x0000000005B90000-0x0000000005B91000-memory.dmp
memory/3980-136-0x00000000052F0000-0x00000000052F1000-memory.dmp
memory/3980-135-0x0000000001090000-0x0000000001091000-memory.dmp
memory/3980-128-0x0000000000400000-0x000000000043C000-memory.dmp
memory/4068-120-0x00000000053C0000-0x00000000053C1000-memory.dmp
memory/4068-125-0x000000000A0A0000-0x000000000A0D8000-memory.dmp
memory/4068-124-0x000000000A100000-0x000000000A17D000-memory.dmp
memory/4068-123-0x0000000002D20000-0x0000000002D2E000-memory.dmp
memory/4068-122-0x0000000005670000-0x0000000005671000-memory.dmp
memory/4068-121-0x0000000005260000-0x00000000052FC000-memory.dmp
memory/4068-115-0x0000000000A00000-0x0000000000A01000-memory.dmp
memory/4068-119-0x0000000005450000-0x0000000005451000-memory.dmp
memory/4068-118-0x00000000058B0000-0x00000000058B1000-memory.dmp
memory/4068-117-0x0000000005300000-0x0000000005301000-memory.dmp