Analysis
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max time kernel
147s -
max time network
150s -
platform
windows10-2004_x64 -
resource
win10v2004-20240508-en -
resource tags
arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-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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Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
a35fb224f8e7072b721b3a399ed6c1c0_JaffaCakes118.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation a35fb224f8e7072b721b3a399ed6c1c0_JaffaCakes118.exe -
Executes dropped EXE 3 IoCs
Processes:
skrs_.exeskrs_.exeskrs_.exepid process 3212 skrs_.exe 4260 skrs_.exe 3572 skrs_.exe -
Unexpected DNS network traffic destination 3 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 -
Adds Run key to start application 2 TTPs 2 IoCs
Processes:
skrs_.exeskrs_.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\DHCP Service = "C:\\Program Files (x86)\\DHCP Service\\dhcpsv.exe" skrs_.exe Set value (str) \REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\INSTs_ = "wscript \"C:\\Users\\Admin\\Katr8s_\\skrs_.vbs\"" 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 1 IoCs
Processes:
skrs_.exedescription pid process target process PID 4260 set thread context of 3572 4260 skrs_.exe skrs_.exe -
Drops file in Program Files directory 2 IoCs
Processes:
skrs_.exedescription ioc process File created C:\Program Files (x86)\DHCP Service\dhcpsv.exe skrs_.exe File opened for modification C:\Program Files (x86)\DHCP Service\dhcpsv.exe skrs_.exe -
Drops file in Windows directory 4 IoCs
Processes:
a35fb224f8e7072b721b3a399ed6c1c0_JaffaCakes118.exeskrs_.exeskrs_.exea35fb224f8e7072b721b3a399ed6c1c0_JaffaCakes118.exedescription ioc process 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 File opened for modification C:\Windows\win.ini a35fb224f8e7072b721b3a399ed6c1c0_JaffaCakes118.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious behavior: EnumeratesProcesses 3 IoCs
Processes:
skrs_.exepid process 3572 skrs_.exe 3572 skrs_.exe 3572 skrs_.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
Processes:
skrs_.exepid process 3572 skrs_.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
skrs_.exedescription pid process Token: SeDebugPrivilege 3572 skrs_.exe -
Suspicious use of SetWindowsHookEx 4 IoCs
Processes:
a35fb224f8e7072b721b3a399ed6c1c0_JaffaCakes118.exea35fb224f8e7072b721b3a399ed6c1c0_JaffaCakes118.exeskrs_.exeskrs_.exepid process 3140 a35fb224f8e7072b721b3a399ed6c1c0_JaffaCakes118.exe 5016 a35fb224f8e7072b721b3a399ed6c1c0_JaffaCakes118.exe 3212 skrs_.exe 4260 skrs_.exe -
Suspicious use of WriteProcessMemory 19 IoCs
Processes:
a35fb224f8e7072b721b3a399ed6c1c0_JaffaCakes118.exea35fb224f8e7072b721b3a399ed6c1c0_JaffaCakes118.exeskrs_.exeskrs_.exedescription pid process target process PID 3140 wrote to memory of 5016 3140 a35fb224f8e7072b721b3a399ed6c1c0_JaffaCakes118.exe a35fb224f8e7072b721b3a399ed6c1c0_JaffaCakes118.exe PID 3140 wrote to memory of 5016 3140 a35fb224f8e7072b721b3a399ed6c1c0_JaffaCakes118.exe a35fb224f8e7072b721b3a399ed6c1c0_JaffaCakes118.exe PID 3140 wrote to memory of 5016 3140 a35fb224f8e7072b721b3a399ed6c1c0_JaffaCakes118.exe a35fb224f8e7072b721b3a399ed6c1c0_JaffaCakes118.exe PID 5016 wrote to memory of 3212 5016 a35fb224f8e7072b721b3a399ed6c1c0_JaffaCakes118.exe skrs_.exe PID 5016 wrote to memory of 3212 5016 a35fb224f8e7072b721b3a399ed6c1c0_JaffaCakes118.exe skrs_.exe PID 5016 wrote to memory of 3212 5016 a35fb224f8e7072b721b3a399ed6c1c0_JaffaCakes118.exe skrs_.exe PID 3212 wrote to memory of 4260 3212 skrs_.exe skrs_.exe PID 3212 wrote to memory of 4260 3212 skrs_.exe skrs_.exe PID 3212 wrote to memory of 4260 3212 skrs_.exe skrs_.exe PID 4260 wrote to memory of 3572 4260 skrs_.exe skrs_.exe PID 4260 wrote to memory of 3572 4260 skrs_.exe skrs_.exe PID 4260 wrote to memory of 3572 4260 skrs_.exe skrs_.exe PID 4260 wrote to memory of 3572 4260 skrs_.exe skrs_.exe PID 4260 wrote to memory of 3572 4260 skrs_.exe skrs_.exe PID 4260 wrote to memory of 3572 4260 skrs_.exe skrs_.exe PID 4260 wrote to memory of 3572 4260 skrs_.exe skrs_.exe PID 4260 wrote to memory of 3572 4260 skrs_.exe skrs_.exe PID 4260 wrote to memory of 3572 4260 skrs_.exe skrs_.exe PID 4260 wrote to memory of 3572 4260 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⤵
- Drops file in Windows directory
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3140 -
C:\Users\Admin\AppData\Local\Temp\a35fb224f8e7072b721b3a399ed6c1c0_JaffaCakes118.exe"C:\Users\Admin\AppData\Local\Temp\a35fb224f8e7072b721b3a399ed6c1c0_JaffaCakes118.exe"2⤵
- Checks computer location settings
- Drops file in Windows directory
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:5016 -
C:\Users\Admin\Katr8s_\skrs_.exe"C:\Users\Admin\Katr8s_\skrs_.exe"3⤵
- Executes dropped EXE
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3212 -
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
PID:4260 -
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
PID:3572
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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C:\Users\Admin\Katr8s_\skrs_.exeFilesize
1.0MB
MD5a35fb224f8e7072b721b3a399ed6c1c0
SHA1a17aa0bb8821c68823fb5d10306e97087533430c
SHA25644d014d02ff46e6732e5463240209b232aff16de47fa661980c7c44d6d5cdb7c
SHA51235b7b5ce2578dd4dfd67fc4ce059d72248a6c35e27065307e4530310e843983add91d59d4060f119b1f06f38ae21c6811b906255a5c558ba976d89165c1f5d05
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C:\Windows\win.iniFilesize
123B
MD56bf517432f65eb7f0d18d574bf14124c
SHA15b9f37c1dd1318ebbec3bd2f07c109eb9d22c727
SHA2566e2b70dfccabf3cc651545676a3a566c9cfae03f15f772886646abce1da35b46
SHA5127b0cb8c20034585ec8bf4b45eda5eda5993a56e24931a7426dc5a9f081ec1f82545f3e26a48a4df885c8691fc6e8026d0808aebe3cc3358ba85ddca08ac4cb06
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memory/3140-3-0x0000000002290000-0x0000000002298000-memory.dmpFilesize
32KB
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memory/3140-4-0x0000000077141000-0x0000000077261000-memory.dmpFilesize
1.1MB
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memory/3572-31-0x0000000000400000-0x0000000000451000-memory.dmpFilesize
324KB
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memory/3572-33-0x0000000000400000-0x0000000000451000-memory.dmpFilesize
324KB
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memory/5016-11-0x00000000029C0000-0x00000000029C8000-memory.dmpFilesize
32KB