Analysis
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max time kernel
145s -
max time network
150s -
platform
windows10_x64 -
resource
win10v20210410 -
submitted
21-04-2021 14:44
Static task
static1
Behavioral task
behavioral1
Sample
WN4gbQOiEGOnFMa.exe
Resource
win7v20210410
windows7_x64
0 signatures
0 seconds
Behavioral task
behavioral2
Sample
WN4gbQOiEGOnFMa.exe
Resource
win10v20210410
windows10_x64
0 signatures
0 seconds
General
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Target
WN4gbQOiEGOnFMa.exe
-
Size
601KB
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MD5
a4b94521170a0d99c8a9f0fe8c648561
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SHA1
b7a942b4c7704562e23d2e888a07a026fb49fe7d
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SHA256
9a597f3b7ec4bb4a3e54c966b95ca6cb543ca467fbc9397a66713187d77a7b97
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SHA512
0e4947fe3b205793521344ce09e9f9d67359d6166a1c954fc227cd1d3df5505b1c615eff7e5fbd1e64a7e2e845751e03603ef0c11ff107b63933a43fbc0a9a1b
Malware Config
Extracted
Family
agenttesla
Credentials
Protocol: smtp- Host:
a2plcpnl0347.prod.iad2.secureserver.net - Port:
587 - Username:
marketing@eximindiacorporation.com - Password:
Admin_123
Signatures
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AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
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AgentTesla Payload 3 IoCs
Processes:
resource yara_rule behavioral2/memory/1596-125-0x0000000000400000-0x000000000043C000-memory.dmp family_agenttesla behavioral2/memory/1596-126-0x000000000043766E-mapping.dmp family_agenttesla behavioral2/memory/1596-131-0x0000000005690000-0x0000000005B8E000-memory.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-1-5-21-3686645723-710336880-414668232-1000\Software\Microsoft\Windows\CurrentVersion\Run\AvrzbM = "C:\\Users\\Admin\\AppData\\Roaming\\AvrzbM\\AvrzbM.exe" RegSvcs.exe -
Suspicious use of SetThreadContext 1 IoCs
Processes:
WN4gbQOiEGOnFMa.exedescription pid process target process PID 4048 set thread context of 1596 4048 WN4gbQOiEGOnFMa.exe RegSvcs.exe -
Suspicious behavior: EnumeratesProcesses 8 IoCs
Processes:
WN4gbQOiEGOnFMa.exeRegSvcs.exepid process 4048 WN4gbQOiEGOnFMa.exe 4048 WN4gbQOiEGOnFMa.exe 4048 WN4gbQOiEGOnFMa.exe 4048 WN4gbQOiEGOnFMa.exe 4048 WN4gbQOiEGOnFMa.exe 4048 WN4gbQOiEGOnFMa.exe 1596 RegSvcs.exe 1596 RegSvcs.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
WN4gbQOiEGOnFMa.exeRegSvcs.exedescription pid process Token: SeDebugPrivilege 4048 WN4gbQOiEGOnFMa.exe Token: SeDebugPrivilege 1596 RegSvcs.exe -
Suspicious use of WriteProcessMemory 11 IoCs
Processes:
WN4gbQOiEGOnFMa.exedescription pid process target process PID 4048 wrote to memory of 1236 4048 WN4gbQOiEGOnFMa.exe RegSvcs.exe PID 4048 wrote to memory of 1236 4048 WN4gbQOiEGOnFMa.exe RegSvcs.exe PID 4048 wrote to memory of 1236 4048 WN4gbQOiEGOnFMa.exe RegSvcs.exe PID 4048 wrote to memory of 1596 4048 WN4gbQOiEGOnFMa.exe RegSvcs.exe PID 4048 wrote to memory of 1596 4048 WN4gbQOiEGOnFMa.exe RegSvcs.exe PID 4048 wrote to memory of 1596 4048 WN4gbQOiEGOnFMa.exe RegSvcs.exe PID 4048 wrote to memory of 1596 4048 WN4gbQOiEGOnFMa.exe RegSvcs.exe PID 4048 wrote to memory of 1596 4048 WN4gbQOiEGOnFMa.exe RegSvcs.exe PID 4048 wrote to memory of 1596 4048 WN4gbQOiEGOnFMa.exe RegSvcs.exe PID 4048 wrote to memory of 1596 4048 WN4gbQOiEGOnFMa.exe RegSvcs.exe PID 4048 wrote to memory of 1596 4048 WN4gbQOiEGOnFMa.exe RegSvcs.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\WN4gbQOiEGOnFMa.exe"C:\Users\Admin\AppData\Local\Temp\WN4gbQOiEGOnFMa.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/1596-125-0x0000000000400000-0x000000000043C000-memory.dmpFilesize
240KB
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memory/1596-133-0x0000000006480000-0x0000000006481000-memory.dmpFilesize
4KB
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memory/1596-132-0x0000000005AB0000-0x0000000005AB1000-memory.dmpFilesize
4KB
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memory/1596-131-0x0000000005690000-0x0000000005B8E000-memory.dmpFilesize
5.0MB
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memory/1596-126-0x000000000043766E-mapping.dmp
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memory/4048-121-0x00000000054F0000-0x00000000054F9000-memory.dmpFilesize
36KB
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memory/4048-114-0x0000000000860000-0x0000000000861000-memory.dmpFilesize
4KB
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memory/4048-122-0x000000007F190000-0x000000007F191000-memory.dmpFilesize
4KB
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memory/4048-123-0x00000000011B0000-0x0000000001228000-memory.dmpFilesize
480KB
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memory/4048-124-0x0000000008430000-0x000000000846C000-memory.dmpFilesize
240KB
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memory/4048-120-0x00000000051D0000-0x00000000051D1000-memory.dmpFilesize
4KB
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memory/4048-119-0x0000000005080000-0x000000000557E000-memory.dmpFilesize
5.0MB
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memory/4048-118-0x0000000005270000-0x0000000005271000-memory.dmpFilesize
4KB
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memory/4048-117-0x0000000005130000-0x0000000005131000-memory.dmpFilesize
4KB
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memory/4048-116-0x0000000005580000-0x0000000005581000-memory.dmpFilesize
4KB