Analysis
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max time kernel
147s -
max time network
158s -
platform
windows10-2004_x64 -
resource
win10v2004-20220414-en -
submitted
21-05-2022 00:16
Static task
static1
Behavioral task
behavioral1
Sample
AWB#5421457894.exe
Resource
win7-20220414-en
Behavioral task
behavioral2
Sample
AWB#5421457894.exe
Resource
win10v2004-20220414-en
General
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Target
AWB#5421457894.exe
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Size
678KB
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MD5
9e50434dd1d10773a9d2acc0ca50284e
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SHA1
da4c89a1120051755459cbb20a9f5b671e9b388d
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SHA256
2e50f8b1d260cd858d97aff46f8c157b940d6db17673ec99f9304ac963f32473
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SHA512
31b519166553d6009251c9b2920bc95563061abefac834523afc08912cdbacdd7eb06980bdf607120586cd4170dfcf82a1e9da39e74c7f653047e6192733fcf3
Malware Config
Extracted
agenttesla
Protocol: smtp- Host:
mail.privateemail.com - Port:
587 - Username:
[email protected] - Password:
blockmoney32
Signatures
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AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
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AgentTesla Payload 1 IoCs
Processes:
resource yara_rule behavioral2/memory/4676-135-0x0000000000400000-0x000000000044A000-memory.dmp family_agenttesla -
Executes dropped EXE 1 IoCs
Processes:
RegAsm.exepid process 4676 RegAsm.exe -
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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Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
Processes:
RegAsm.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 RegAsm.exe Key opened \REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 RegAsm.exe Key opened \REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 RegAsm.exe -
Adds Run key to start application 2 TTPs 1 IoCs
Processes:
RegAsm.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ITIXsa = "C:\\Users\\Admin\\AppData\\Roaming\\ITIXsa\\ITIXsa.exe" RegAsm.exe -
Suspicious use of SetThreadContext 1 IoCs
Processes:
AWB#5421457894.exedescription pid process target process PID 3684 set thread context of 4676 3684 AWB#5421457894.exe RegAsm.exe -
Suspicious behavior: EnumeratesProcesses 5 IoCs
Processes:
AWB#5421457894.exeRegAsm.exepid process 3684 AWB#5421457894.exe 3684 AWB#5421457894.exe 3684 AWB#5421457894.exe 4676 RegAsm.exe 4676 RegAsm.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
AWB#5421457894.exeRegAsm.exedescription pid process Token: SeDebugPrivilege 3684 AWB#5421457894.exe Token: SeDebugPrivilege 4676 RegAsm.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
RegAsm.exepid process 4676 RegAsm.exe -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
AWB#5421457894.exedescription pid process target process PID 3684 wrote to memory of 4676 3684 AWB#5421457894.exe RegAsm.exe PID 3684 wrote to memory of 4676 3684 AWB#5421457894.exe RegAsm.exe PID 3684 wrote to memory of 4676 3684 AWB#5421457894.exe RegAsm.exe PID 3684 wrote to memory of 4676 3684 AWB#5421457894.exe RegAsm.exe PID 3684 wrote to memory of 4676 3684 AWB#5421457894.exe RegAsm.exe PID 3684 wrote to memory of 4676 3684 AWB#5421457894.exe RegAsm.exe PID 3684 wrote to memory of 4676 3684 AWB#5421457894.exe RegAsm.exe PID 3684 wrote to memory of 4676 3684 AWB#5421457894.exe RegAsm.exe -
outlook_office_path 1 IoCs
Processes:
RegAsm.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 RegAsm.exe -
outlook_win_path 1 IoCs
Processes:
RegAsm.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 RegAsm.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\AWB#5421457894.exe"C:\Users\Admin\AppData\Local\Temp\AWB#5421457894.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\RegAsm.exe"C:\Users\Admin\AppData\Local\Temp\RegAsm.exe"2⤵
- Executes dropped EXE
- Accesses Microsoft Outlook profiles
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- outlook_office_path
- outlook_win_path
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\RegAsm.exeFilesize
63KB
MD50d5df43af2916f47d00c1573797c1a13
SHA1230ab5559e806574d26b4c20847c368ed55483b0
SHA256c066aee7aa3aa83f763ebc5541daa266ed6c648fbffcde0d836a13b221bb2adc
SHA512f96cf9e1890746b12daf839a6d0f16f062b72c1b8a40439f96583f242980f10f867720232a6fa0f7d4d7ac0a7a6143981a5a130d6417ea98b181447134c7cfe2
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C:\Users\Admin\AppData\Local\Temp\RegAsm.exeFilesize
63KB
MD50d5df43af2916f47d00c1573797c1a13
SHA1230ab5559e806574d26b4c20847c368ed55483b0
SHA256c066aee7aa3aa83f763ebc5541daa266ed6c648fbffcde0d836a13b221bb2adc
SHA512f96cf9e1890746b12daf839a6d0f16f062b72c1b8a40439f96583f242980f10f867720232a6fa0f7d4d7ac0a7a6143981a5a130d6417ea98b181447134c7cfe2
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memory/3684-130-0x0000000000DC0000-0x0000000000E70000-memory.dmpFilesize
704KB
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memory/3684-131-0x00000000064C0000-0x0000000006A64000-memory.dmpFilesize
5.6MB
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memory/3684-132-0x0000000005FF0000-0x0000000006082000-memory.dmpFilesize
584KB
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memory/3684-133-0x0000000006100000-0x0000000006144000-memory.dmpFilesize
272KB
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memory/4676-134-0x0000000000000000-mapping.dmp
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memory/4676-135-0x0000000000400000-0x000000000044A000-memory.dmpFilesize
296KB
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memory/4676-138-0x0000000005930000-0x00000000059CC000-memory.dmpFilesize
624KB
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memory/4676-139-0x0000000006700000-0x0000000006766000-memory.dmpFilesize
408KB
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memory/4676-140-0x0000000006D40000-0x0000000006D90000-memory.dmpFilesize
320KB
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memory/4676-141-0x0000000006D30000-0x0000000006D3A000-memory.dmpFilesize
40KB