Analysis
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max time kernel
149s -
max time network
95s -
platform
windows10-2004_x64 -
resource
win10v2004-20240704-en -
resource tags
arch:x64arch:x86image:win10v2004-20240704-enlocale:en-usos:windows10-2004-x64system -
submitted
06-07-2024 07:35
Static task
static1
Behavioral task
behavioral1
Sample
27bfcb366780fda0103674cf586b9f9a_JaffaCakes118.exe
Resource
win7-20240704-en
Behavioral task
behavioral2
Sample
27bfcb366780fda0103674cf586b9f9a_JaffaCakes118.exe
Resource
win10v2004-20240704-en
General
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Target
27bfcb366780fda0103674cf586b9f9a_JaffaCakes118.exe
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Size
147KB
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MD5
27bfcb366780fda0103674cf586b9f9a
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SHA1
375dd2f573fc4a16d15ae5983380763cc2a63ada
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SHA256
981453ac4e6fa994cd9e139250002dbebd65266e1ec520df609a834a9f6604f1
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SHA512
203ef83e9a5a928965a6c7850326ad2aed10ee44350b1b525c0d599bfbb98a3fad72c0ed3d9b81f621c1bf3c617e563aeea5a9d11a72bddb5c35903e67fad4da
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SSDEEP
3072:I5yGxdzttaGOQ00f/MLxSbWxsjdf0PhPJslB9dq/U0:/GBYGOQb8LxtxsdRR+L
Malware Config
Extracted
metasploit
encoder/call4_dword_xor
Signatures
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MetaSploit
Detected malicious payload which is part of the Metasploit Framework, likely generated with msfvenom or similar.
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Modifies firewall policy service 3 TTPs 8 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications igfxbk86.exe Set value (str) \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List\C:\Windows\SysWOW64\igfxbk86.exe = "C:\\Windows\\SysWOW64\\igfxbk86.exe:*:Enabled:Intel Backup Service" igfxbk86.exe Key created \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\DomainProfile\AuthorizedApplications\List igfxbk86.exe Key created \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\DomainProfile igfxbk86.exe Key created \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\DomainProfile\AuthorizedApplications igfxbk86.exe Set value (str) \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\DomainProfile\AuthorizedApplications\List\C:\Windows\SysWOW64\igfxbk86.exe = "C:\\Windows\\SysWOW64\\igfxbk86.exe:*:Enabled:Intel Backup Service" igfxbk86.exe Key created \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List igfxbk86.exe Key created \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile igfxbk86.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-1-5-21-771719357-2485960699-3367710044-1000\Control Panel\International\Geo\Nation 27bfcb366780fda0103674cf586b9f9a_JaffaCakes118.exe -
Deletes itself 1 IoCs
pid Process 4480 igfxbk86.exe -
Executes dropped EXE 2 IoCs
pid Process 4172 igfxbk86.exe 4480 igfxbk86.exe -
resource yara_rule behavioral2/memory/3720-0-0x0000000000400000-0x000000000044C000-memory.dmp upx behavioral2/memory/3720-2-0x0000000000400000-0x000000000044C000-memory.dmp upx behavioral2/memory/3720-3-0x0000000000400000-0x000000000044C000-memory.dmp upx behavioral2/memory/3720-4-0x0000000000400000-0x000000000044C000-memory.dmp upx behavioral2/memory/4480-42-0x0000000000400000-0x0000000000429000-memory.dmp upx behavioral2/memory/3720-44-0x0000000000400000-0x000000000044C000-memory.dmp upx behavioral2/memory/4480-46-0x0000000000400000-0x000000000044C000-memory.dmp upx behavioral2/memory/4480-47-0x0000000000400000-0x0000000000429000-memory.dmp upx -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Intel Backup Service = "C:\\Windows\\SysWOW64\\igfxbk86.exe" igfxbk86.exe -
Maps connected drives based on registry 3 TTPs 4 IoCs
Disk information is often read in order to detect sandboxing environments.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum 27bfcb366780fda0103674cf586b9f9a_JaffaCakes118.exe Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0 27bfcb366780fda0103674cf586b9f9a_JaffaCakes118.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum igfxbk86.exe Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0 igfxbk86.exe -
Drops file in System32 directory 4 IoCs
description ioc Process File opened for modification C:\Windows\SysWOW64\ 27bfcb366780fda0103674cf586b9f9a_JaffaCakes118.exe File opened for modification C:\Windows\SysWOW64\igfxbk86.exe 27bfcb366780fda0103674cf586b9f9a_JaffaCakes118.exe File created C:\Windows\SysWOW64\igfxbk86.exe 27bfcb366780fda0103674cf586b9f9a_JaffaCakes118.exe File opened for modification C:\Windows\SysWOW64\ igfxbk86.exe -
Suspicious use of SetThreadContext 2 IoCs
description pid Process procid_target PID 3288 set thread context of 3720 3288 27bfcb366780fda0103674cf586b9f9a_JaffaCakes118.exe 82 PID 4172 set thread context of 4480 4172 igfxbk86.exe 87 -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Modifies registry class 1 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\ 27bfcb366780fda0103674cf586b9f9a_JaffaCakes118.exe -
Suspicious behavior: EnumeratesProcesses 8 IoCs
pid Process 3720 27bfcb366780fda0103674cf586b9f9a_JaffaCakes118.exe 3720 27bfcb366780fda0103674cf586b9f9a_JaffaCakes118.exe 3720 27bfcb366780fda0103674cf586b9f9a_JaffaCakes118.exe 3720 27bfcb366780fda0103674cf586b9f9a_JaffaCakes118.exe 4480 igfxbk86.exe 4480 igfxbk86.exe 4480 igfxbk86.exe 4480 igfxbk86.exe -
Suspicious use of UnmapMainImage 1 IoCs
pid Process 4172 igfxbk86.exe -
Suspicious use of WriteProcessMemory 19 IoCs
description pid Process procid_target PID 3288 wrote to memory of 3720 3288 27bfcb366780fda0103674cf586b9f9a_JaffaCakes118.exe 82 PID 3288 wrote to memory of 3720 3288 27bfcb366780fda0103674cf586b9f9a_JaffaCakes118.exe 82 PID 3288 wrote to memory of 3720 3288 27bfcb366780fda0103674cf586b9f9a_JaffaCakes118.exe 82 PID 3288 wrote to memory of 3720 3288 27bfcb366780fda0103674cf586b9f9a_JaffaCakes118.exe 82 PID 3288 wrote to memory of 3720 3288 27bfcb366780fda0103674cf586b9f9a_JaffaCakes118.exe 82 PID 3288 wrote to memory of 3720 3288 27bfcb366780fda0103674cf586b9f9a_JaffaCakes118.exe 82 PID 3288 wrote to memory of 3720 3288 27bfcb366780fda0103674cf586b9f9a_JaffaCakes118.exe 82 PID 3720 wrote to memory of 4172 3720 27bfcb366780fda0103674cf586b9f9a_JaffaCakes118.exe 86 PID 3720 wrote to memory of 4172 3720 27bfcb366780fda0103674cf586b9f9a_JaffaCakes118.exe 86 PID 3720 wrote to memory of 4172 3720 27bfcb366780fda0103674cf586b9f9a_JaffaCakes118.exe 86 PID 4172 wrote to memory of 4480 4172 igfxbk86.exe 87 PID 4172 wrote to memory of 4480 4172 igfxbk86.exe 87 PID 4172 wrote to memory of 4480 4172 igfxbk86.exe 87 PID 4172 wrote to memory of 4480 4172 igfxbk86.exe 87 PID 4172 wrote to memory of 4480 4172 igfxbk86.exe 87 PID 4172 wrote to memory of 4480 4172 igfxbk86.exe 87 PID 4172 wrote to memory of 4480 4172 igfxbk86.exe 87 PID 4480 wrote to memory of 3492 4480 igfxbk86.exe 56 PID 4480 wrote to memory of 3492 4480 igfxbk86.exe 56
Processes
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C:\Windows\Explorer.EXEC:\Windows\Explorer.EXE1⤵PID:3492
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C:\Users\Admin\AppData\Local\Temp\27bfcb366780fda0103674cf586b9f9a_JaffaCakes118.exe"C:\Users\Admin\AppData\Local\Temp\27bfcb366780fda0103674cf586b9f9a_JaffaCakes118.exe"2⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3288 -
C:\Users\Admin\AppData\Local\Temp\27bfcb366780fda0103674cf586b9f9a_JaffaCakes118.exe"C:\Users\Admin\AppData\Local\Temp\27bfcb366780fda0103674cf586b9f9a_JaffaCakes118.exe"3⤵
- Checks computer location settings
- Maps connected drives based on registry
- Drops file in System32 directory
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:3720 -
C:\Windows\SysWOW64\igfxbk86.exe"C:\Windows\SysWOW64\igfxbk86.exe" C:\Users\Admin\AppData\Local\Temp\27BFCB~1.EXE4⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:4172 -
C:\Windows\SysWOW64\igfxbk86.exe"C:\Windows\SysWOW64\igfxbk86.exe" C:\Users\Admin\AppData\Local\Temp\27BFCB~1.EXE5⤵
- Modifies firewall policy service
- Deletes itself
- Executes dropped EXE
- Adds Run key to start application
- Maps connected drives based on registry
- Drops file in System32 directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4480
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Network
MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Create or Modify System Process
1Windows Service
1Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Create or Modify System Process
1Windows Service
1Defense Evasion
Impair Defenses
1Disable or Modify System Firewall
1Modify Registry
2Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
147KB
MD527bfcb366780fda0103674cf586b9f9a
SHA1375dd2f573fc4a16d15ae5983380763cc2a63ada
SHA256981453ac4e6fa994cd9e139250002dbebd65266e1ec520df609a834a9f6604f1
SHA512203ef83e9a5a928965a6c7850326ad2aed10ee44350b1b525c0d599bfbb98a3fad72c0ed3d9b81f621c1bf3c617e563aeea5a9d11a72bddb5c35903e67fad4da