Analysis
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max time kernel
149s -
max time network
51s -
platform
windows10-2004_x64 -
resource
win10v2004-20240508-en -
resource tags
arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system -
submitted
14-06-2024 07:53
Static task
static1
Behavioral task
behavioral1
Sample
a89cae7074a69f416bdcc29ec5860894_JaffaCakes118.exe
Resource
win7-20240508-en
Behavioral task
behavioral2
Sample
a89cae7074a69f416bdcc29ec5860894_JaffaCakes118.exe
Resource
win10v2004-20240508-en
General
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Target
a89cae7074a69f416bdcc29ec5860894_JaffaCakes118.exe
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Size
597KB
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MD5
a89cae7074a69f416bdcc29ec5860894
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SHA1
5b7c0e4eba1e79e413d0668c6ee751e45c9d786c
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SHA256
a900d839a0b9eb00cdecce3341c7fd63c73c47f0a3a9a3a25381a9f4e8347a68
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SHA512
bc08423925bffcb89a82cb8d044d871f74124dfbca7df445a9bcca9d4abafd08bc5de389069d8d828d4ef3e20a39efa00cee6830044d87eaf52775e84a7da1de
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SSDEEP
12288:4osspP5Lzf8osspP5LzfcqcWhr5AZ80sCQMw4P:npP5LTLpP5LTfJqZ85Ctw4
Malware Config
Signatures
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AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
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Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
RegAsm.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation RegAsm.exe -
Executes dropped EXE 1 IoCs
Processes:
GAx.exepid process 1892 GAx.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:
RegAsm.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 RegAsm.exe Key opened \REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 RegAsm.exe Key opened \REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\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-1-5-21-4124900551-4068476067-3491212533-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MyOtApp = "C:\\Users\\Admin\\AppData\\Roaming\\MyOtApp\\MyOtApp.exe" RegAsm.exe -
Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
Processes:
flow ioc 4 checkip.dyndns.org -
Suspicious use of SetThreadContext 1 IoCs
Processes:
a89cae7074a69f416bdcc29ec5860894_JaffaCakes118.exedescription pid process target process PID 1868 set thread context of 3900 1868 a89cae7074a69f416bdcc29ec5860894_JaffaCakes118.exe RegAsm.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious behavior: EnumeratesProcesses 64 IoCs
Processes:
RegAsm.exeGAx.exepid process 3900 RegAsm.exe 3900 RegAsm.exe 3900 RegAsm.exe 1892 GAx.exe 3900 RegAsm.exe 1892 GAx.exe 3900 RegAsm.exe 1892 GAx.exe 3900 RegAsm.exe 1892 GAx.exe 3900 RegAsm.exe 3900 RegAsm.exe 1892 GAx.exe 3900 RegAsm.exe 1892 GAx.exe 3900 RegAsm.exe 1892 GAx.exe 3900 RegAsm.exe 1892 GAx.exe 3900 RegAsm.exe 1892 GAx.exe 3900 RegAsm.exe 1892 GAx.exe 3900 RegAsm.exe 1892 GAx.exe 3900 RegAsm.exe 1892 GAx.exe 3900 RegAsm.exe 1892 GAx.exe 3900 RegAsm.exe 3900 RegAsm.exe 1892 GAx.exe 3900 RegAsm.exe 1892 GAx.exe 3900 RegAsm.exe 1892 GAx.exe 3900 RegAsm.exe 1892 GAx.exe 3900 RegAsm.exe 1892 GAx.exe 3900 RegAsm.exe 1892 GAx.exe 3900 RegAsm.exe 1892 GAx.exe 3900 RegAsm.exe 1892 GAx.exe 3900 RegAsm.exe 1892 GAx.exe 3900 RegAsm.exe 3900 RegAsm.exe 1892 GAx.exe 3900 RegAsm.exe 1892 GAx.exe 3900 RegAsm.exe 1892 GAx.exe 3900 RegAsm.exe 1892 GAx.exe 3900 RegAsm.exe 1892 GAx.exe 3900 RegAsm.exe 1892 GAx.exe 3900 RegAsm.exe 1892 GAx.exe 3900 RegAsm.exe -
Suspicious use of AdjustPrivilegeToken 3 IoCs
Processes:
a89cae7074a69f416bdcc29ec5860894_JaffaCakes118.exeRegAsm.exeGAx.exedescription pid process Token: SeDebugPrivilege 1868 a89cae7074a69f416bdcc29ec5860894_JaffaCakes118.exe Token: SeDebugPrivilege 3900 RegAsm.exe Token: SeDebugPrivilege 1892 GAx.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
RegAsm.exepid process 3900 RegAsm.exe -
Suspicious use of WriteProcessMemory 11 IoCs
Processes:
a89cae7074a69f416bdcc29ec5860894_JaffaCakes118.exeRegAsm.exedescription pid process target process PID 1868 wrote to memory of 3900 1868 a89cae7074a69f416bdcc29ec5860894_JaffaCakes118.exe RegAsm.exe PID 1868 wrote to memory of 3900 1868 a89cae7074a69f416bdcc29ec5860894_JaffaCakes118.exe RegAsm.exe PID 1868 wrote to memory of 3900 1868 a89cae7074a69f416bdcc29ec5860894_JaffaCakes118.exe RegAsm.exe PID 1868 wrote to memory of 3900 1868 a89cae7074a69f416bdcc29ec5860894_JaffaCakes118.exe RegAsm.exe PID 1868 wrote to memory of 3900 1868 a89cae7074a69f416bdcc29ec5860894_JaffaCakes118.exe RegAsm.exe PID 1868 wrote to memory of 3900 1868 a89cae7074a69f416bdcc29ec5860894_JaffaCakes118.exe RegAsm.exe PID 1868 wrote to memory of 3900 1868 a89cae7074a69f416bdcc29ec5860894_JaffaCakes118.exe RegAsm.exe PID 1868 wrote to memory of 3900 1868 a89cae7074a69f416bdcc29ec5860894_JaffaCakes118.exe RegAsm.exe PID 3900 wrote to memory of 1892 3900 RegAsm.exe GAx.exe PID 3900 wrote to memory of 1892 3900 RegAsm.exe GAx.exe PID 3900 wrote to memory of 1892 3900 RegAsm.exe GAx.exe -
outlook_office_path 1 IoCs
Processes:
RegAsm.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\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-1-5-21-4124900551-4068476067-3491212533-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 RegAsm.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\a89cae7074a69f416bdcc29ec5860894_JaffaCakes118.exe"C:\Users\Admin\AppData\Local\Temp\a89cae7074a69f416bdcc29ec5860894_JaffaCakes118.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\RegAsm.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"2⤵
- Checks computer location settings
- Accesses Microsoft Outlook profiles
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
- outlook_office_path
- outlook_win_path
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C:\Users\Admin\AppData\Local\Temp\GAx.exe"C:\Users\Admin\AppData\Local\Temp\GAx.exe" C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe3⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
Network
MITRE ATT&CK Matrix ATT&CK v13
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Local\Temp\GAx.exeFilesize
10KB
MD5f683769b947501b5a98376619d5938bb
SHA16a38e4acd9ade0d85697d10683ec84fa0daed11c
SHA256c2cae82e01d954e3a50feaebcd3f75de7416a851ea855d6f0e8aaac84a507ca3
SHA512dbd7a26139c5ef6a409fb247b08eb54c62328edace9a047aac3ca75b8e552572428dbda4efc7836398fa4d2d9e68075e10e2436efcf1f9fc138d69ac440bd556
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memory/1868-1-0x0000000000640000-0x00000000006DC000-memory.dmpFilesize
624KB
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memory/1868-2-0x0000000002A30000-0x0000000002A50000-memory.dmpFilesize
128KB
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memory/1868-3-0x0000000002A50000-0x0000000002A56000-memory.dmpFilesize
24KB
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memory/1868-4-0x0000000074840000-0x0000000074FF0000-memory.dmpFilesize
7.7MB
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memory/1868-5-0x0000000007AD0000-0x0000000008074000-memory.dmpFilesize
5.6MB
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memory/1868-6-0x0000000007610000-0x00000000076A2000-memory.dmpFilesize
584KB
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memory/1868-7-0x0000000007A10000-0x0000000007AAC000-memory.dmpFilesize
624KB
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memory/1868-0-0x000000007484E000-0x000000007484F000-memory.dmpFilesize
4KB
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memory/1868-10-0x0000000074840000-0x0000000074FF0000-memory.dmpFilesize
7.7MB
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memory/1892-30-0x000000006E7E2000-0x000000006E7E3000-memory.dmpFilesize
4KB
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memory/1892-31-0x000000006E7E0000-0x000000006ED91000-memory.dmpFilesize
5.7MB
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memory/1892-35-0x000000006E7E0000-0x000000006ED91000-memory.dmpFilesize
5.7MB
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memory/1892-34-0x000000006E7E2000-0x000000006E7E3000-memory.dmpFilesize
4KB
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memory/1892-32-0x000000006E7E0000-0x000000006ED91000-memory.dmpFilesize
5.7MB
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memory/3900-15-0x0000000074840000-0x0000000074FF0000-memory.dmpFilesize
7.7MB
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memory/3900-11-0x0000000074840000-0x0000000074FF0000-memory.dmpFilesize
7.7MB
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memory/3900-29-0x0000000006B70000-0x0000000006BC0000-memory.dmpFilesize
320KB
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memory/3900-8-0x0000000000400000-0x000000000043A000-memory.dmpFilesize
232KB
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memory/3900-19-0x0000000006C70000-0x0000000006C7A000-memory.dmpFilesize
40KB
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memory/3900-12-0x0000000074840000-0x0000000074FF0000-memory.dmpFilesize
7.7MB
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memory/3900-33-0x00000000068F0000-0x00000000068FA000-memory.dmpFilesize
40KB
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memory/3900-14-0x0000000005ED0000-0x0000000005F36000-memory.dmpFilesize
408KB
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memory/3900-13-0x00000000056F0000-0x0000000005708000-memory.dmpFilesize
96KB