Analysis
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max time kernel
60s -
max time network
12s -
platform
windows7_x64 -
resource
win7v20201028 -
submitted
09-11-2020 20:21
Static task
static1
Behavioral task
behavioral1
Sample
TT COPY.exe
Resource
win7v20201028
Behavioral task
behavioral2
Sample
TT COPY.exe
Resource
win10v20201028
General
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Target
TT COPY.exe
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Size
540KB
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MD5
8cb73260e8cc3d0f51da164e2f30f9db
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SHA1
956cdf7991eff9c64e6d2b9148bec190f347f908
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SHA256
89080cc94eae4cab0a8d50729214296a16767368c12a4f679baab998fad152fc
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SHA512
fb173cf6d551e2e223010cf2180bdaa289ee1f531c64345663caed9496ee59f9edaf6fb18028516f37b805e0b57522b63ab858578705431a891dfbc8ea92a2e9
Malware Config
Extracted
agenttesla
Protocol: smtp- Host:
mail.microtechlab.in - Port:
587 - Username:
reports@microtechlab.in - Password:
pune@123
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/844-6-0x0000000000490000-0x0000000000492000-memory.dmp coreentity -
AgentTesla Payload 4 IoCs
Processes:
resource yara_rule behavioral1/memory/1336-11-0x0000000000400000-0x0000000000452000-memory.dmp family_agenttesla behavioral1/memory/1336-12-0x000000000044CF5E-mapping.dmp family_agenttesla behavioral1/memory/1336-13-0x0000000000400000-0x0000000000452000-memory.dmp family_agenttesla behavioral1/memory/1336-14-0x0000000000400000-0x0000000000452000-memory.dmp family_agenttesla -
Processes:
resource yara_rule behavioral1/memory/844-7-0x00000000043A0000-0x00000000043F3000-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 -
Adds Run key to start application 2 TTPs 1 IoCs
Processes:
RegSvcs.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Windows\CurrentVersion\Run\CpSnJ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\CpSnJ\\CpSnJ.exe" RegSvcs.exe -
Suspicious use of SetThreadContext 1 IoCs
Processes:
TT COPY.exedescription pid process target process PID 844 set thread context of 1336 844 TT COPY.exe RegSvcs.exe -
Modifies registry key 1 TTPs 1 IoCs
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Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
RegSvcs.exepid process 1336 RegSvcs.exe 1336 RegSvcs.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
TT COPY.exeRegSvcs.exedescription pid process Token: SeDebugPrivilege 844 TT COPY.exe Token: SeDebugPrivilege 1336 RegSvcs.exe -
Suspicious use of WriteProcessMemory 20 IoCs
Processes:
TT COPY.exeRegSvcs.exedescription pid process target process PID 844 wrote to memory of 1336 844 TT COPY.exe RegSvcs.exe PID 844 wrote to memory of 1336 844 TT COPY.exe RegSvcs.exe PID 844 wrote to memory of 1336 844 TT COPY.exe RegSvcs.exe PID 844 wrote to memory of 1336 844 TT COPY.exe RegSvcs.exe PID 844 wrote to memory of 1336 844 TT COPY.exe RegSvcs.exe PID 844 wrote to memory of 1336 844 TT COPY.exe RegSvcs.exe PID 844 wrote to memory of 1336 844 TT COPY.exe RegSvcs.exe PID 844 wrote to memory of 1336 844 TT COPY.exe RegSvcs.exe PID 844 wrote to memory of 1336 844 TT COPY.exe RegSvcs.exe PID 844 wrote to memory of 1336 844 TT COPY.exe RegSvcs.exe PID 844 wrote to memory of 1336 844 TT COPY.exe RegSvcs.exe PID 844 wrote to memory of 1336 844 TT COPY.exe RegSvcs.exe PID 1336 wrote to memory of 584 1336 RegSvcs.exe REG.exe PID 1336 wrote to memory of 584 1336 RegSvcs.exe REG.exe PID 1336 wrote to memory of 584 1336 RegSvcs.exe REG.exe PID 1336 wrote to memory of 584 1336 RegSvcs.exe REG.exe PID 1336 wrote to memory of 836 1336 RegSvcs.exe netsh.exe PID 1336 wrote to memory of 836 1336 RegSvcs.exe netsh.exe PID 1336 wrote to memory of 836 1336 RegSvcs.exe netsh.exe PID 1336 wrote to memory of 836 1336 RegSvcs.exe netsh.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\TT COPY.exe"C:\Users\Admin\AppData\Local\Temp\TT COPY.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- 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
- Adds Run key to start application
- 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
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Downloads
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memory/584-18-0x0000000000000000-mapping.dmp
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memory/836-19-0x0000000000000000-mapping.dmp
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memory/844-0-0x00000000749D0000-0x00000000750BE000-memory.dmpFilesize
6.9MB
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memory/844-1-0x0000000000980000-0x0000000000981000-memory.dmpFilesize
4KB
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memory/844-3-0x00000000008A0000-0x00000000008FE000-memory.dmpFilesize
376KB
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memory/844-6-0x0000000000490000-0x0000000000492000-memory.dmpFilesize
8KB
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memory/844-7-0x00000000043A0000-0x00000000043F3000-memory.dmpFilesize
332KB
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memory/1336-11-0x0000000000400000-0x0000000000452000-memory.dmpFilesize
328KB
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memory/1336-12-0x000000000044CF5E-mapping.dmp
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memory/1336-13-0x0000000000400000-0x0000000000452000-memory.dmpFilesize
328KB
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memory/1336-14-0x0000000000400000-0x0000000000452000-memory.dmpFilesize
328KB
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memory/1336-15-0x0000000074950000-0x000000007503E000-memory.dmpFilesize
6.9MB