Analysis
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max time kernel
141s -
max time network
146s -
platform
windows7_x64 -
resource
win7 -
submitted
10-07-2020 07:10
Static task
static1
Behavioral task
behavioral1
Sample
unl.exe
Resource
win7
Behavioral task
behavioral2
Sample
unl.exe
Resource
win10
General
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Target
unl.exe
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Size
418KB
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MD5
15ba350c9a703c5e822add0d18ab0600
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SHA1
1e1bf5d0dbb77a0f74d397949bce454f34fc9670
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SHA256
e024da5585bb4c5b9e633675cf6a9bb596152bc4650ddeccfe6b9b4a763f5d3f
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SHA512
beace9529e572b1b238107b8e57020ee81e0018788e467c326236697bb34022a29959e162479aea064861768986b691ad1417c25950678926b1377ea5b4cbd08
Malware Config
Extracted
agenttesla
Protocol: smtp- Host:
mail.totallyanonymous.com - Port:
587 - Username:
[email protected] - Password:
pop12345674fr@
Signatures
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AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
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AgentTesla Payload 4 IoCs
Processes:
resource yara_rule behavioral1/memory/1884-4-0x0000000000400000-0x000000000044C000-memory.dmp family_agenttesla behavioral1/memory/1884-5-0x0000000000446C0E-mapping.dmp family_agenttesla behavioral1/memory/1884-6-0x0000000000400000-0x000000000044C000-memory.dmp family_agenttesla behavioral1/memory/1884-7-0x0000000000400000-0x000000000044C000-memory.dmp family_agenttesla -
Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
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Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
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Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Suspicious use of SetThreadContext 1 IoCs
Processes:
unl.exedescription pid process target process PID 1152 set thread context of 1884 1152 unl.exe unl.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
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Suspicious behavior: EnumeratesProcesses 3 IoCs
Processes:
unl.exeunl.exepid process 1152 unl.exe 1884 unl.exe 1884 unl.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
unl.exeunl.exedescription pid process Token: SeDebugPrivilege 1152 unl.exe Token: SeDebugPrivilege 1884 unl.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
unl.exepid process 1884 unl.exe -
Suspicious use of WriteProcessMemory 13 IoCs
Processes:
unl.exedescription pid process target process PID 1152 wrote to memory of 1820 1152 unl.exe schtasks.exe PID 1152 wrote to memory of 1820 1152 unl.exe schtasks.exe PID 1152 wrote to memory of 1820 1152 unl.exe schtasks.exe PID 1152 wrote to memory of 1820 1152 unl.exe schtasks.exe PID 1152 wrote to memory of 1884 1152 unl.exe unl.exe PID 1152 wrote to memory of 1884 1152 unl.exe unl.exe PID 1152 wrote to memory of 1884 1152 unl.exe unl.exe PID 1152 wrote to memory of 1884 1152 unl.exe unl.exe PID 1152 wrote to memory of 1884 1152 unl.exe unl.exe PID 1152 wrote to memory of 1884 1152 unl.exe unl.exe PID 1152 wrote to memory of 1884 1152 unl.exe unl.exe PID 1152 wrote to memory of 1884 1152 unl.exe unl.exe PID 1152 wrote to memory of 1884 1152 unl.exe unl.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\unl.exe"C:\Users\Admin\AppData\Local\Temp\unl.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\CKDrTaW" /XML "C:\Users\Admin\AppData\Local\Temp\tmp8507.tmp"2⤵
- Creates scheduled task(s)
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C:\Users\Admin\AppData\Local\Temp\unl.exe"{path}"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Local\Temp\tmp8507.tmpMD5
2af94a0dfb6a09b0fe1768363cbad1fe
SHA1d340beed650149af61461d3da38eb695d8e077a0
SHA256d56e40b6c7d2575d898c70643d4010a555cc844886c560f5c52feac5dfc6158d
SHA512e6b129da5e495b2d0514a2f80af27a1525d4c0bef7c90a1902e2a518297b2681c6c45dcf5527e0e667612b4dbd63d7d6b55b70d06514c94326e2db77bf5c891f
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memory/1152-1-0x0000000000000000-0x0000000000000000-disk.dmp
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memory/1820-2-0x0000000000000000-mapping.dmp
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memory/1884-4-0x0000000000400000-0x000000000044C000-memory.dmpFilesize
304KB
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memory/1884-5-0x0000000000446C0E-mapping.dmp
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memory/1884-6-0x0000000000400000-0x000000000044C000-memory.dmpFilesize
304KB
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memory/1884-7-0x0000000000400000-0x000000000044C000-memory.dmpFilesize
304KB