Analysis
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max time kernel
141s -
max time network
150s -
platform
windows10-2004_x64 -
resource
win10v2004-20240802-en -
resource tags
arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system -
submitted
18/08/2024, 17:23
Static task
static1
Behavioral task
behavioral1
Sample
a78cc2ecb3a05fcc22d96ae588a3ba26_JaffaCakes118.exe
Resource
win7-20240708-en
Behavioral task
behavioral2
Sample
a78cc2ecb3a05fcc22d96ae588a3ba26_JaffaCakes118.exe
Resource
win10v2004-20240802-en
General
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Target
a78cc2ecb3a05fcc22d96ae588a3ba26_JaffaCakes118.exe
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Size
104KB
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MD5
a78cc2ecb3a05fcc22d96ae588a3ba26
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SHA1
eac6eefcf3003dda9a8bc059fd7d6cc1cbd6f96b
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SHA256
11df808478c3860c2466150dd4275d6a2a6a26a089eb30088aca006dc6002cd4
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SHA512
78c448a9bbaa39d14133b569930a50402608e3ba38e86e9677dbbcbea7c8a500dfc77a4b3a2c6d6e09835a67a0c559bc9451c20940add5359444af1cf938c667
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SSDEEP
3072:ucZSPfENKVVSAsunYsnzMBafD+QtNdpKx6p7zh1ZSi9:+fqKHSg3xjp/pN1ZSC
Malware Config
Signatures
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Boot or Logon Autostart Execution: Active Setup 2 TTPs 4 IoCs
Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{34ABBE3C-8CC2-0AA2-4CE1-5D0A8B4A2A0D}\StubPath = "C:\\Windows\\system32\\svchost.exe 2" Thumbs.exe Key created \REGISTRY\USER\S-1-5-21-4182098368-2521458979-3782681353-1000\SOFTWARE\MICROSOFT\ACTIVE SETUP\INSTALLED COMPONENTS\ Thumbs.exe Key created \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\MICROSOFT\ACTIVE SETUP\INSTALLED COMPONENTS\ Thumbs.exe Key created \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{34ABBE3C-8CC2-0AA2-4CE1-5D0A8B4A2A0D} Thumbs.exe -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-4182098368-2521458979-3782681353-1000\Control Panel\International\Geo\Nation a78cc2ecb3a05fcc22d96ae588a3ba26_JaffaCakes118.exe -
Executes dropped EXE 1 IoCs
pid Process 5048 Thumbs.exe -
Adds Run key to start application 2 TTPs 4 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\svchost = "C:\\Windows\\system32\\svchost.exe" Thumbs.exe Set value (str) \REGISTRY\USER\S-1-5-21-4182098368-2521458979-3782681353-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\svchost = "C:\\Windows\\system32\\svchost.exe" Thumbs.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\RunOnce\*svchost = "C:\\Windows\\system32\\svchost.exe" Thumbs.exe Set value (str) \REGISTRY\USER\S-1-5-21-4182098368-2521458979-3782681353-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\*svchost = "C:\\Windows\\system32\\svchost.exe" Thumbs.exe -
Drops file in System32 directory 1 IoCs
description ioc Process File created C:\Windows\SysWOW64\svchost.exe Thumbs.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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System Location Discovery: System Language Discovery 1 TTPs 2 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language a78cc2ecb3a05fcc22d96ae588a3ba26_JaffaCakes118.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language Thumbs.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 5048 Thumbs.exe 5048 Thumbs.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeDebugPrivilege 2328 a78cc2ecb3a05fcc22d96ae588a3ba26_JaffaCakes118.exe Token: SeDebugPrivilege 5048 Thumbs.exe -
Suspicious use of WriteProcessMemory 5 IoCs
description pid Process procid_target PID 2328 wrote to memory of 5048 2328 a78cc2ecb3a05fcc22d96ae588a3ba26_JaffaCakes118.exe 87 PID 2328 wrote to memory of 5048 2328 a78cc2ecb3a05fcc22d96ae588a3ba26_JaffaCakes118.exe 87 PID 2328 wrote to memory of 5048 2328 a78cc2ecb3a05fcc22d96ae588a3ba26_JaffaCakes118.exe 87 PID 5048 wrote to memory of 3456 5048 Thumbs.exe 56 PID 5048 wrote to memory of 3456 5048 Thumbs.exe 56
Processes
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C:\Windows\Explorer.EXEC:\Windows\Explorer.EXE1⤵PID:3456
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C:\Users\Admin\AppData\Local\Temp\a78cc2ecb3a05fcc22d96ae588a3ba26_JaffaCakes118.exe"C:\Users\Admin\AppData\Local\Temp\a78cc2ecb3a05fcc22d96ae588a3ba26_JaffaCakes118.exe"2⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2328 -
C:\Users\Admin\AppData\Local\Temp\Thumbs.exe"C:\Users\Admin\AppData\Local\Temp\Thumbs.exe"3⤵
- Boot or Logon Autostart Execution: Active Setup
- Executes dropped EXE
- Adds Run key to start application
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:5048
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Network
MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
2Active Setup
1Registry Run Keys / Startup Folder
1Privilege Escalation
Boot or Logon Autostart Execution
2Active Setup
1Registry Run Keys / Startup Folder
1Replay Monitor
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Downloads
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Filesize
12KB
MD535709dfad713907869f2781ce4ac8185
SHA1156e88037be465d0ba2edad839b79a2289a6efda
SHA2567eb08a3f145217614b429abf3fca3a55f3da114357670ae00f9ce998b8876639
SHA51235b05bc246364e5b664265681467def45621535151c11612c0c47310f446f4e93daa0c2bc788ab8395bd07d7607cecab19b62fc6b29350304c6345e1c0721c95