Analysis
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max time kernel
107s -
max time network
129s -
platform
windows10-2004_x64 -
resource
win10v2004-20220414-en -
submitted
21-05-2022 18:57
Static task
static1
Behavioral task
behavioral1
Sample
INVOICE.exe
Resource
win7-20220414-en
Behavioral task
behavioral2
Sample
INVOICE.exe
Resource
win10v2004-20220414-en
General
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Target
INVOICE.exe
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Size
416KB
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MD5
a4975ac7f40ccf4d1803e8edb97dce9e
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SHA1
2c7d642447cfb2a4b1ce65659ed383b0c96f11ed
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SHA256
fda1d068f7b5e8dcbaa65b83088db628ebc9e6420a9fdd258fb5f62bcb4b0935
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SHA512
e7b9c414498f1bf101aaa8a77f94266acf6099cb62e9027a8707d71195ece5f67c48745e3f72b7f77ea15bce803990852f3668c8069b2ab4e49b527e4165a681
Malware Config
Extracted
Protocol: smtp- Host:
smtp.ionos.es - Port:
587 - Username:
bailen@famorga.com - Password:
Famorga2017
Extracted
agenttesla
Protocol: smtp- Host:
smtp.ionos.es - Port:
587 - Username:
bailen@famorga.com - Password:
Famorga2017
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/3740-137-0x0000000000400000-0x000000000044C000-memory.dmp family_agenttesla -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
INVOICE.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Control Panel\International\Geo\Nation INVOICE.exe -
Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
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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:
INVOICE.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 INVOICE.exe Key opened \REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 INVOICE.exe Key opened \REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 INVOICE.exe -
Suspicious use of SetThreadContext 1 IoCs
Processes:
INVOICE.exedescription pid process target process PID 4696 set thread context of 3740 4696 INVOICE.exe INVOICE.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
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Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
INVOICE.exepid process 3740 INVOICE.exe 3740 INVOICE.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
INVOICE.exedescription pid process Token: SeDebugPrivilege 3740 INVOICE.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
INVOICE.exepid process 3740 INVOICE.exe -
Suspicious use of WriteProcessMemory 11 IoCs
Processes:
INVOICE.exedescription pid process target process PID 4696 wrote to memory of 328 4696 INVOICE.exe schtasks.exe PID 4696 wrote to memory of 328 4696 INVOICE.exe schtasks.exe PID 4696 wrote to memory of 328 4696 INVOICE.exe schtasks.exe PID 4696 wrote to memory of 3740 4696 INVOICE.exe INVOICE.exe PID 4696 wrote to memory of 3740 4696 INVOICE.exe INVOICE.exe PID 4696 wrote to memory of 3740 4696 INVOICE.exe INVOICE.exe PID 4696 wrote to memory of 3740 4696 INVOICE.exe INVOICE.exe PID 4696 wrote to memory of 3740 4696 INVOICE.exe INVOICE.exe PID 4696 wrote to memory of 3740 4696 INVOICE.exe INVOICE.exe PID 4696 wrote to memory of 3740 4696 INVOICE.exe INVOICE.exe PID 4696 wrote to memory of 3740 4696 INVOICE.exe INVOICE.exe -
outlook_office_path 1 IoCs
Processes:
INVOICE.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 INVOICE.exe -
outlook_win_path 1 IoCs
Processes:
INVOICE.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 INVOICE.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\INVOICE.exe"C:\Users\Admin\AppData\Local\Temp\INVOICE.exe"1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\fmElvmhYYNFPQr" /XML "C:\Users\Admin\AppData\Local\Temp\tmp635D.tmp"2⤵
- Creates scheduled task(s)
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C:\Users\Admin\AppData\Local\Temp\INVOICE.exe"{path}"2⤵
- Accesses Microsoft Outlook profiles
- 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\Microsoft\CLR_v4.0_32\UsageLogs\INVOICE.exe.logFilesize
507B
MD576ffb2f33cb32ade8fc862a67599e9d8
SHA1920cc4ab75b36d2f9f6e979b74db568973c49130
SHA256f1a3724670e3379318ec9c73f6f39058cab0ab013ba3cd90c047c3d701362310
SHA512f33502c2e1bb30c05359bfc6819ca934642a1e01874e3060349127d792694d56ad22fccd6c9477b8ee50d66db35785779324273f509576b48b7f85577e001b4e
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C:\Users\Admin\AppData\Local\Temp\tmp635D.tmpFilesize
1KB
MD5f0bd468898e306b8a95fc827d4d694e7
SHA13736d18ed0e6e5a19bca109a9995013ee0d369ab
SHA256d04365981eb0071431cbef12c79ab263f2b931e2bbf45dea03fe36b14c7ec3c0
SHA5124a2848236c86b6c5ef10618cae8afc1452e8be650e1838ae4ca01c2bca51c322a8420d71118b22d035e51d2bbe4c46960828d73dbe04ad8c58ed5daf813b6db9
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memory/328-134-0x0000000000000000-mapping.dmp
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memory/3740-136-0x0000000000000000-mapping.dmp
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memory/3740-137-0x0000000000400000-0x000000000044C000-memory.dmpFilesize
304KB
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memory/3740-139-0x0000000005E00000-0x0000000005E66000-memory.dmpFilesize
408KB
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memory/3740-140-0x0000000006430000-0x0000000006480000-memory.dmpFilesize
320KB
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memory/3740-141-0x00000000068F0000-0x00000000068FA000-memory.dmpFilesize
40KB
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memory/4696-130-0x0000000000E20000-0x0000000000E8E000-memory.dmpFilesize
440KB
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memory/4696-131-0x0000000005E90000-0x0000000006434000-memory.dmpFilesize
5.6MB
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memory/4696-132-0x00000000058E0000-0x0000000005972000-memory.dmpFilesize
584KB
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memory/4696-133-0x0000000006720000-0x00000000067BC000-memory.dmpFilesize
624KB