Analysis
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max time kernel
149s -
max time network
151s -
platform
windows7_x64 -
resource
win7-20231129-en -
resource tags
arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system -
submitted
13-06-2024 01:32
Static task
static1
Behavioral task
behavioral1
Sample
a35fb224f8e7072b721b3a399ed6c1c0_JaffaCakes118.exe
Resource
win7-20231129-en
General
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Target
a35fb224f8e7072b721b3a399ed6c1c0_JaffaCakes118.exe
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Size
1.0MB
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MD5
a35fb224f8e7072b721b3a399ed6c1c0
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SHA1
a17aa0bb8821c68823fb5d10306e97087533430c
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SHA256
44d014d02ff46e6732e5463240209b232aff16de47fa661980c7c44d6d5cdb7c
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SHA512
35b7b5ce2578dd4dfd67fc4ce059d72248a6c35e27065307e4530310e843983add91d59d4060f119b1f06f38ae21c6811b906255a5c558ba976d89165c1f5d05
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SSDEEP
12288:baeA7wKKw7GTc3OLTc8Xvp2eLnkCIiX8K:bae8MTxLkmX8
Malware Config
Signatures
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Executes dropped EXE 3 IoCs
Processes:
skrs_.exeskrs_.exeskrs_.exepid process 2180 skrs_.exe 3052 skrs_.exe 2604 skrs_.exe -
Loads dropped DLL 2 IoCs
Processes:
a35fb224f8e7072b721b3a399ed6c1c0_JaffaCakes118.exepid process 2032 a35fb224f8e7072b721b3a399ed6c1c0_JaffaCakes118.exe 2032 a35fb224f8e7072b721b3a399ed6c1c0_JaffaCakes118.exe -
Unexpected DNS network traffic destination 6 IoCs
Network traffic to other servers than the configured DNS servers was detected on the DNS port.
Processes:
description ioc Destination IP 23.249.162.143 Destination IP 23.249.162.143 Destination IP 23.249.162.143 Destination IP 23.249.162.143 Destination IP 23.249.162.143 Destination IP 23.249.162.143 -
Adds Run key to start application 2 TTPs 2 IoCs
Processes:
skrs_.exeskrs_.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000\Software\Microsoft\Windows\CurrentVersion\RunOnce\INSTs_ = "wscript \"C:\\Users\\Admin\\Katr8s_\\skrs_.vbs\"" skrs_.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\TCP Service = "C:\\Program Files (x86)\\TCP Service\\tcpsv.exe" skrs_.exe -
Processes:
skrs_.exedescription ioc process Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA skrs_.exe -
Suspicious use of SetThreadContext 3 IoCs
Processes:
a35fb224f8e7072b721b3a399ed6c1c0_JaffaCakes118.exeskrs_.exeskrs_.exedescription pid process target process PID 2320 set thread context of 2032 2320 a35fb224f8e7072b721b3a399ed6c1c0_JaffaCakes118.exe a35fb224f8e7072b721b3a399ed6c1c0_JaffaCakes118.exe PID 2180 set thread context of 3052 2180 skrs_.exe skrs_.exe PID 3052 set thread context of 2604 3052 skrs_.exe skrs_.exe -
Drops file in Program Files directory 2 IoCs
Processes:
skrs_.exedescription ioc process File created C:\Program Files (x86)\TCP Service\tcpsv.exe skrs_.exe File opened for modification C:\Program Files (x86)\TCP Service\tcpsv.exe skrs_.exe -
Drops file in Windows directory 4 IoCs
Processes:
a35fb224f8e7072b721b3a399ed6c1c0_JaffaCakes118.exea35fb224f8e7072b721b3a399ed6c1c0_JaffaCakes118.exeskrs_.exeskrs_.exedescription ioc process File opened for modification C:\Windows\win.ini a35fb224f8e7072b721b3a399ed6c1c0_JaffaCakes118.exe File opened for modification C:\Windows\win.ini a35fb224f8e7072b721b3a399ed6c1c0_JaffaCakes118.exe File opened for modification C:\Windows\win.ini skrs_.exe File opened for modification C:\Windows\win.ini skrs_.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
skrs_.exepid process 2604 skrs_.exe 2604 skrs_.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
Processes:
skrs_.exepid process 2604 skrs_.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
skrs_.exedescription pid process Token: SeDebugPrivilege 2604 skrs_.exe -
Suspicious use of SetWindowsHookEx 4 IoCs
Processes:
a35fb224f8e7072b721b3a399ed6c1c0_JaffaCakes118.exea35fb224f8e7072b721b3a399ed6c1c0_JaffaCakes118.exeskrs_.exeskrs_.exepid process 2320 a35fb224f8e7072b721b3a399ed6c1c0_JaffaCakes118.exe 2032 a35fb224f8e7072b721b3a399ed6c1c0_JaffaCakes118.exe 2180 skrs_.exe 3052 skrs_.exe -
Suspicious use of WriteProcessMemory 23 IoCs
Processes:
a35fb224f8e7072b721b3a399ed6c1c0_JaffaCakes118.exea35fb224f8e7072b721b3a399ed6c1c0_JaffaCakes118.exeskrs_.exeskrs_.exedescription pid process target process PID 2320 wrote to memory of 2032 2320 a35fb224f8e7072b721b3a399ed6c1c0_JaffaCakes118.exe a35fb224f8e7072b721b3a399ed6c1c0_JaffaCakes118.exe PID 2320 wrote to memory of 2032 2320 a35fb224f8e7072b721b3a399ed6c1c0_JaffaCakes118.exe a35fb224f8e7072b721b3a399ed6c1c0_JaffaCakes118.exe PID 2320 wrote to memory of 2032 2320 a35fb224f8e7072b721b3a399ed6c1c0_JaffaCakes118.exe a35fb224f8e7072b721b3a399ed6c1c0_JaffaCakes118.exe PID 2320 wrote to memory of 2032 2320 a35fb224f8e7072b721b3a399ed6c1c0_JaffaCakes118.exe a35fb224f8e7072b721b3a399ed6c1c0_JaffaCakes118.exe PID 2032 wrote to memory of 2180 2032 a35fb224f8e7072b721b3a399ed6c1c0_JaffaCakes118.exe skrs_.exe PID 2032 wrote to memory of 2180 2032 a35fb224f8e7072b721b3a399ed6c1c0_JaffaCakes118.exe skrs_.exe PID 2032 wrote to memory of 2180 2032 a35fb224f8e7072b721b3a399ed6c1c0_JaffaCakes118.exe skrs_.exe PID 2032 wrote to memory of 2180 2032 a35fb224f8e7072b721b3a399ed6c1c0_JaffaCakes118.exe skrs_.exe PID 2180 wrote to memory of 3052 2180 skrs_.exe skrs_.exe PID 2180 wrote to memory of 3052 2180 skrs_.exe skrs_.exe PID 2180 wrote to memory of 3052 2180 skrs_.exe skrs_.exe PID 2180 wrote to memory of 3052 2180 skrs_.exe skrs_.exe PID 3052 wrote to memory of 2604 3052 skrs_.exe skrs_.exe PID 3052 wrote to memory of 2604 3052 skrs_.exe skrs_.exe PID 3052 wrote to memory of 2604 3052 skrs_.exe skrs_.exe PID 3052 wrote to memory of 2604 3052 skrs_.exe skrs_.exe PID 3052 wrote to memory of 2604 3052 skrs_.exe skrs_.exe PID 3052 wrote to memory of 2604 3052 skrs_.exe skrs_.exe PID 3052 wrote to memory of 2604 3052 skrs_.exe skrs_.exe PID 3052 wrote to memory of 2604 3052 skrs_.exe skrs_.exe PID 3052 wrote to memory of 2604 3052 skrs_.exe skrs_.exe PID 3052 wrote to memory of 2604 3052 skrs_.exe skrs_.exe PID 3052 wrote to memory of 2604 3052 skrs_.exe skrs_.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\a35fb224f8e7072b721b3a399ed6c1c0_JaffaCakes118.exe"C:\Users\Admin\AppData\Local\Temp\a35fb224f8e7072b721b3a399ed6c1c0_JaffaCakes118.exe"1⤵
- Suspicious use of SetThreadContext
- Drops file in Windows directory
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\a35fb224f8e7072b721b3a399ed6c1c0_JaffaCakes118.exe"C:\Users\Admin\AppData\Local\Temp\a35fb224f8e7072b721b3a399ed6c1c0_JaffaCakes118.exe"2⤵
- Loads dropped DLL
- Drops file in Windows directory
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\Katr8s_\skrs_.exe"C:\Users\Admin\Katr8s_\skrs_.exe"3⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Drops file in Windows directory
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\Katr8s_\skrs_.exe"C:\Users\Admin\Katr8s_\skrs_.exe"4⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Drops file in Windows directory
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\Katr8s_\skrs_.exe"C:\Users\Admin\Katr8s_\skrs_.exe"5⤵
- Executes dropped EXE
- Adds Run key to start application
- Checks whether UAC is enabled
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
Network
MITRE ATT&CK Matrix ATT&CK v13
Replay Monitor
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Downloads
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C:\Windows\win.iniFilesize
509B
MD5d2a2412bddba16d60ec63bd9550d933f
SHA1deb3d3bdc9055f0b4909b31d3048446848fae0e1
SHA25679ff2254e38192be1626d05bec6c82e10c85e1cf91df7440c4c443380a1e877a
SHA5128fecada107f72e59e43a689eeb8e2e18fa6134d0941c122025ed5bd00e5eab8114d7125bd289505be75641385a0c3f112d402c693f142c3ddc870d5fa8116e31
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\Users\Admin\Katr8s_\skrs_.exeFilesize
1.0MB
MD5a35fb224f8e7072b721b3a399ed6c1c0
SHA1a17aa0bb8821c68823fb5d10306e97087533430c
SHA25644d014d02ff46e6732e5463240209b232aff16de47fa661980c7c44d6d5cdb7c
SHA51235b7b5ce2578dd4dfd67fc4ce059d72248a6c35e27065307e4530310e843983add91d59d4060f119b1f06f38ae21c6811b906255a5c558ba976d89165c1f5d05
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memory/2032-12-0x0000000076D30000-0x0000000076ED9000-memory.dmpFilesize
1.7MB
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memory/2320-3-0x00000000002A0000-0x00000000002A8000-memory.dmpFilesize
32KB
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memory/2320-4-0x0000000076D31000-0x0000000076E32000-memory.dmpFilesize
1.0MB
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memory/2320-5-0x0000000076D30000-0x0000000076ED9000-memory.dmpFilesize
1.7MB
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memory/2604-31-0x0000000000400000-0x0000000000451000-memory.dmpFilesize
324KB
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memory/2604-33-0x0000000000400000-0x0000000000451000-memory.dmpFilesize
324KB