Analysis
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max time kernel
147s -
max time network
111s -
platform
windows10_x64 -
resource
win10v20201028 -
submitted
08-04-2021 03:33
Static task
static1
Behavioral task
behavioral1
Sample
nunu.exe
Resource
win7v20201028
0 signatures
0 seconds
Behavioral task
behavioral2
Sample
nunu.exe
Resource
win10v20201028
0 signatures
0 seconds
General
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Target
nunu.exe
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Size
507KB
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MD5
c7fa443b722dd4bffcda58dbd6a8ad71
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SHA1
d41111e463dfaa1c10a50f0a6a5d48fc8ae4f7e7
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SHA256
a321481a5f943697829963ca1ebfafb6f4857ee1af0119daf7c9e274d4e756a0
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SHA512
52e8a71c2214e5cde34a6ff055ee944bfc3d06f8dcb82b247a0d3ab02417bfb6a836457fb7de9e145de5be04a7805a1b61a197e0a48c92234de8e31c53ce12d2
Malware Config
Extracted
Family
agenttesla
Credentials
Protocol: smtp- Host:
mail.dtvcambodia.com - Port:
587 - Username:
leakkim@dtvcambodia.com - Password:
@DTVcambodia2017
Signatures
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AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
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AgentTesla Payload 2 IoCs
Processes:
resource yara_rule behavioral2/memory/4176-15-0x0000000000400000-0x000000000043C000-memory.dmp family_agenttesla behavioral2/memory/4176-16-0x000000000043764E-mapping.dmp family_agenttesla -
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-1-5-21-3341490333-719741536-2920803124-1000\Software\Microsoft\Windows\CurrentVersion\Run\AvrzbM = "C:\\Users\\Admin\\AppData\\Roaming\\AvrzbM\\AvrzbM.exe" RegSvcs.exe -
Suspicious use of SetThreadContext 1 IoCs
Processes:
nunu.exedescription pid process target process PID 4636 set thread context of 4176 4636 nunu.exe RegSvcs.exe -
Suspicious behavior: EnumeratesProcesses 8 IoCs
Processes:
nunu.exeRegSvcs.exepid process 4636 nunu.exe 4636 nunu.exe 4636 nunu.exe 4636 nunu.exe 4636 nunu.exe 4636 nunu.exe 4176 RegSvcs.exe 4176 RegSvcs.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
nunu.exeRegSvcs.exedescription pid process Token: SeDebugPrivilege 4636 nunu.exe Token: SeDebugPrivilege 4176 RegSvcs.exe -
Suspicious use of WriteProcessMemory 11 IoCs
Processes:
nunu.exedescription pid process target process PID 4636 wrote to memory of 4160 4636 nunu.exe RegSvcs.exe PID 4636 wrote to memory of 4160 4636 nunu.exe RegSvcs.exe PID 4636 wrote to memory of 4160 4636 nunu.exe RegSvcs.exe PID 4636 wrote to memory of 4176 4636 nunu.exe RegSvcs.exe PID 4636 wrote to memory of 4176 4636 nunu.exe RegSvcs.exe PID 4636 wrote to memory of 4176 4636 nunu.exe RegSvcs.exe PID 4636 wrote to memory of 4176 4636 nunu.exe RegSvcs.exe PID 4636 wrote to memory of 4176 4636 nunu.exe RegSvcs.exe PID 4636 wrote to memory of 4176 4636 nunu.exe RegSvcs.exe PID 4636 wrote to memory of 4176 4636 nunu.exe RegSvcs.exe PID 4636 wrote to memory of 4176 4636 nunu.exe RegSvcs.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\nunu.exe"C:\Users\Admin\AppData\Local\Temp\nunu.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"2⤵
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"2⤵
- Drops file in Drivers directory
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
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Downloads
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memory/4176-15-0x0000000000400000-0x000000000043C000-memory.dmpFilesize
240KB
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memory/4176-24-0x0000000005D40000-0x0000000005D41000-memory.dmpFilesize
4KB
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memory/4176-23-0x0000000005CB0000-0x0000000005CB1000-memory.dmpFilesize
4KB
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memory/4176-22-0x0000000005250000-0x0000000005251000-memory.dmpFilesize
4KB
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memory/4176-17-0x0000000073D60000-0x000000007444E000-memory.dmpFilesize
6.9MB
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memory/4176-16-0x000000000043764E-mapping.dmp
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memory/4636-7-0x0000000005280000-0x0000000005281000-memory.dmpFilesize
4KB
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memory/4636-10-0x00000000054C0000-0x00000000054C1000-memory.dmpFilesize
4KB
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memory/4636-11-0x00000000056B0000-0x00000000056B4000-memory.dmpFilesize
16KB
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memory/4636-12-0x000000007FD00000-0x000000007FD01000-memory.dmpFilesize
4KB
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memory/4636-13-0x0000000001220000-0x0000000001291000-memory.dmpFilesize
452KB
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memory/4636-14-0x0000000000E40000-0x0000000000E7B000-memory.dmpFilesize
236KB
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memory/4636-9-0x00000000053E0000-0x00000000053E1000-memory.dmpFilesize
4KB
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memory/4636-8-0x00000000051C0000-0x00000000051C1000-memory.dmpFilesize
4KB
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memory/4636-2-0x0000000073D60000-0x000000007444E000-memory.dmpFilesize
6.9MB
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memory/4636-6-0x00000000056E0000-0x00000000056E1000-memory.dmpFilesize
4KB
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memory/4636-5-0x0000000005120000-0x0000000005121000-memory.dmpFilesize
4KB
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memory/4636-3-0x0000000000890000-0x0000000000891000-memory.dmpFilesize
4KB