Analysis
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max time kernel
55s -
max time network
24s -
platform
windows7_x64 -
resource
win7v20201028 -
submitted
09-11-2020 19:37
Behavioral task
behavioral1
Sample
duk (3).exe
Resource
win7v20201028
Behavioral task
behavioral2
Sample
duk (3).exe
Resource
win10v20201028
General
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Target
duk (3).exe
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Size
511KB
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MD5
04b191c4242a98c5b14ed1de9c61ef8c
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SHA1
4c4fafb67933eb18100acdc76128f42dc9a9525f
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SHA256
bbfd3959ef22e9fa18ed11cbc9b8f31ac36e86f0d055d2c57b81ee19f9c54175
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SHA512
c613ece1002132dfacf60eb41a0d1910e3e3c314db9b53f13b9e9eb34c4db9553538f3fc12f22c3ddf5ca705a53f64517783b292c240c20ec0d002a8e202144b
Malware Config
Extracted
agenttesla
Protocol: smtp- Host:
mail.hotel71.com.bd - Port:
587 - Username:
chat@hotel71.com.bd - Password:
9+^va&phP1v9
Signatures
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AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
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CoreEntity .NET Packer 1 IoCs
A .NET packer called CoreEntity where it has embedded the payload as a BitMap object which is later decrypted.
Processes:
resource yara_rule behavioral1/memory/596-4-0x0000000000890000-0x0000000000893000-memory.dmp coreentity -
AgentTesla Payload 4 IoCs
Processes:
resource yara_rule behavioral1/memory/1708-6-0x0000000000400000-0x0000000000450000-memory.dmp family_agenttesla behavioral1/memory/1708-7-0x000000000044AC5E-mapping.dmp family_agenttesla behavioral1/memory/1708-8-0x0000000000400000-0x0000000000450000-memory.dmp family_agenttesla behavioral1/memory/1708-9-0x0000000000400000-0x0000000000450000-memory.dmp family_agenttesla -
Processes:
resource yara_rule behavioral1/memory/596-5-0x0000000008080000-0x00000000080D1000-memory.dmp rezer0 -
Disables Task Manager via registry modification
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Drops file in Drivers directory 1 IoCs
Processes:
RegSvcs.exedescription ioc process File opened for modification C:\Windows\system32\drivers\etc\hosts RegSvcs.exe -
Suspicious use of SetThreadContext 1 IoCs
Processes:
duk (3).exedescription pid process target process PID 596 set thread context of 1708 596 duk (3).exe RegSvcs.exe -
Modifies registry key 1 TTPs 1 IoCs
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Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
RegSvcs.exepid process 1708 RegSvcs.exe 1708 RegSvcs.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
duk (3).exeRegSvcs.exedescription pid process Token: SeDebugPrivilege 596 duk (3).exe Token: SeDebugPrivilege 1708 RegSvcs.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
Processes:
duk (3).exepid process 596 duk (3).exe 596 duk (3).exe -
Suspicious use of WriteProcessMemory 20 IoCs
Processes:
duk (3).exeRegSvcs.exedescription pid process target process PID 596 wrote to memory of 1708 596 duk (3).exe RegSvcs.exe PID 596 wrote to memory of 1708 596 duk (3).exe RegSvcs.exe PID 596 wrote to memory of 1708 596 duk (3).exe RegSvcs.exe PID 596 wrote to memory of 1708 596 duk (3).exe RegSvcs.exe PID 596 wrote to memory of 1708 596 duk (3).exe RegSvcs.exe PID 596 wrote to memory of 1708 596 duk (3).exe RegSvcs.exe PID 596 wrote to memory of 1708 596 duk (3).exe RegSvcs.exe PID 596 wrote to memory of 1708 596 duk (3).exe RegSvcs.exe PID 596 wrote to memory of 1708 596 duk (3).exe RegSvcs.exe PID 596 wrote to memory of 1708 596 duk (3).exe RegSvcs.exe PID 596 wrote to memory of 1708 596 duk (3).exe RegSvcs.exe PID 596 wrote to memory of 1708 596 duk (3).exe RegSvcs.exe PID 1708 wrote to memory of 616 1708 RegSvcs.exe REG.exe PID 1708 wrote to memory of 616 1708 RegSvcs.exe REG.exe PID 1708 wrote to memory of 616 1708 RegSvcs.exe REG.exe PID 1708 wrote to memory of 616 1708 RegSvcs.exe REG.exe PID 1708 wrote to memory of 1624 1708 RegSvcs.exe netsh.exe PID 1708 wrote to memory of 1624 1708 RegSvcs.exe netsh.exe PID 1708 wrote to memory of 1624 1708 RegSvcs.exe netsh.exe PID 1708 wrote to memory of 1624 1708 RegSvcs.exe netsh.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\duk (3).exe"C:\Users\Admin\AppData\Local\Temp\duk (3).exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"{path}"2⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\REG.exeREG add HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\System /v DisableTaskMgr /t REG_DWORD /d 1 /f3⤵
- Modifies registry key
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C:\Windows\SysWOW64\netsh.exe"netsh" wlan show profile3⤵
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
Loading Replay Monitor...
Downloads
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memory/596-0-0x0000000074CC0000-0x00000000753AE000-memory.dmpFilesize
6.9MB
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memory/596-1-0x0000000000B80000-0x0000000000B81000-memory.dmpFilesize
4KB
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memory/596-4-0x0000000000890000-0x0000000000893000-memory.dmpFilesize
12KB
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memory/596-5-0x0000000008080000-0x00000000080D1000-memory.dmpFilesize
324KB
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memory/616-13-0x0000000000000000-mapping.dmp
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memory/1624-14-0x0000000000000000-mapping.dmp
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memory/1708-6-0x0000000000400000-0x0000000000450000-memory.dmpFilesize
320KB
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memory/1708-7-0x000000000044AC5E-mapping.dmp
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memory/1708-8-0x0000000000400000-0x0000000000450000-memory.dmpFilesize
320KB
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memory/1708-9-0x0000000000400000-0x0000000000450000-memory.dmpFilesize
320KB
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memory/1708-10-0x0000000074CC0000-0x00000000753AE000-memory.dmpFilesize
6.9MB
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memory/1960-3-0x000007FEF7E50000-0x000007FEF80CA000-memory.dmpFilesize
2.5MB