Analysis
-
max time kernel
149s -
max time network
152s -
platform
windows7_x64 -
resource
win7-20240704-en -
resource tags
arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-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
-
Target
27bfcb366780fda0103674cf586b9f9a_JaffaCakes118.exe
-
Size
147KB
-
MD5
27bfcb366780fda0103674cf586b9f9a
-
SHA1
375dd2f573fc4a16d15ae5983380763cc2a63ada
-
SHA256
981453ac4e6fa994cd9e139250002dbebd65266e1ec520df609a834a9f6604f1
-
SHA512
203ef83e9a5a928965a6c7850326ad2aed10ee44350b1b525c0d599bfbb98a3fad72c0ed3d9b81f621c1bf3c617e563aeea5a9d11a72bddb5c35903e67fad4da
-
SSDEEP
3072:I5yGxdzttaGOQ00f/MLxSbWxsjdf0PhPJslB9dq/U0:/GBYGOQb8LxtxsdRR+L
Malware Config
Extracted
metasploit
encoder/call4_dword_xor
Signatures
-
MetaSploit
Detected malicious payload which is part of the Metasploit Framework, likely generated with msfvenom or similar.
-
Modifies firewall policy service 3 TTPs 4 IoCs
description ioc Process 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 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 -
Deletes itself 1 IoCs
pid Process 2292 igfxbk86.exe -
Executes dropped EXE 2 IoCs
pid Process 2724 igfxbk86.exe 2292 igfxbk86.exe -
Loads dropped DLL 2 IoCs
pid Process 1120 27bfcb366780fda0103674cf586b9f9a_JaffaCakes118.exe 2724 igfxbk86.exe -
resource yara_rule behavioral1/memory/1120-4-0x0000000000400000-0x000000000044C000-memory.dmp upx behavioral1/memory/1120-9-0x0000000000400000-0x000000000044C000-memory.dmp upx behavioral1/memory/1120-8-0x0000000000400000-0x000000000044C000-memory.dmp upx behavioral1/memory/1120-7-0x0000000000400000-0x000000000044C000-memory.dmp upx behavioral1/memory/1120-6-0x0000000000400000-0x000000000044C000-memory.dmp upx behavioral1/memory/1120-3-0x0000000000400000-0x000000000044C000-memory.dmp upx behavioral1/memory/1120-2-0x0000000000400000-0x000000000044C000-memory.dmp upx behavioral1/memory/2292-29-0x0000000000400000-0x000000000044C000-memory.dmp upx behavioral1/memory/2292-28-0x0000000000400000-0x000000000044C000-memory.dmp upx behavioral1/memory/1120-34-0x0000000000400000-0x000000000044C000-memory.dmp upx behavioral1/memory/2292-35-0x0000000000400000-0x000000000044C000-memory.dmp upx behavioral1/memory/2292-39-0x0000000000400000-0x000000000044C000-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 2256 set thread context of 1120 2256 27bfcb366780fda0103674cf586b9f9a_JaffaCakes118.exe 29 PID 2724 set thread context of 2292 2724 igfxbk86.exe 31 -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
-
Suspicious behavior: EnumeratesProcesses 4 IoCs
pid Process 1120 27bfcb366780fda0103674cf586b9f9a_JaffaCakes118.exe 1120 27bfcb366780fda0103674cf586b9f9a_JaffaCakes118.exe 2292 igfxbk86.exe 2292 igfxbk86.exe -
Suspicious use of WriteProcessMemory 20 IoCs
description pid Process procid_target PID 2256 wrote to memory of 1120 2256 27bfcb366780fda0103674cf586b9f9a_JaffaCakes118.exe 29 PID 2256 wrote to memory of 1120 2256 27bfcb366780fda0103674cf586b9f9a_JaffaCakes118.exe 29 PID 2256 wrote to memory of 1120 2256 27bfcb366780fda0103674cf586b9f9a_JaffaCakes118.exe 29 PID 2256 wrote to memory of 1120 2256 27bfcb366780fda0103674cf586b9f9a_JaffaCakes118.exe 29 PID 2256 wrote to memory of 1120 2256 27bfcb366780fda0103674cf586b9f9a_JaffaCakes118.exe 29 PID 2256 wrote to memory of 1120 2256 27bfcb366780fda0103674cf586b9f9a_JaffaCakes118.exe 29 PID 2256 wrote to memory of 1120 2256 27bfcb366780fda0103674cf586b9f9a_JaffaCakes118.exe 29 PID 1120 wrote to memory of 2724 1120 27bfcb366780fda0103674cf586b9f9a_JaffaCakes118.exe 30 PID 1120 wrote to memory of 2724 1120 27bfcb366780fda0103674cf586b9f9a_JaffaCakes118.exe 30 PID 1120 wrote to memory of 2724 1120 27bfcb366780fda0103674cf586b9f9a_JaffaCakes118.exe 30 PID 1120 wrote to memory of 2724 1120 27bfcb366780fda0103674cf586b9f9a_JaffaCakes118.exe 30 PID 2724 wrote to memory of 2292 2724 igfxbk86.exe 31 PID 2724 wrote to memory of 2292 2724 igfxbk86.exe 31 PID 2724 wrote to memory of 2292 2724 igfxbk86.exe 31 PID 2724 wrote to memory of 2292 2724 igfxbk86.exe 31 PID 2724 wrote to memory of 2292 2724 igfxbk86.exe 31 PID 2724 wrote to memory of 2292 2724 igfxbk86.exe 31 PID 2724 wrote to memory of 2292 2724 igfxbk86.exe 31 PID 2292 wrote to memory of 1392 2292 igfxbk86.exe 20 PID 2292 wrote to memory of 1392 2292 igfxbk86.exe 20
Processes
-
C:\Windows\Explorer.EXEC:\Windows\Explorer.EXE1⤵PID:1392
-
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:2256 -
C:\Users\Admin\AppData\Local\Temp\27bfcb366780fda0103674cf586b9f9a_JaffaCakes118.exe"C:\Users\Admin\AppData\Local\Temp\27bfcb366780fda0103674cf586b9f9a_JaffaCakes118.exe"3⤵
- Loads dropped DLL
- Maps connected drives based on registry
- Drops file in System32 directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1120 -
C:\Windows\SysWOW64\igfxbk86.exe"C:\Windows\SysWOW64\igfxbk86.exe" C:\Users\Admin\AppData\Local\Temp\27BFCB~1.EXE4⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2724 -
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:2292
-
-
-
-
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
-
Filesize
147KB
MD527bfcb366780fda0103674cf586b9f9a
SHA1375dd2f573fc4a16d15ae5983380763cc2a63ada
SHA256981453ac4e6fa994cd9e139250002dbebd65266e1ec520df609a834a9f6604f1
SHA512203ef83e9a5a928965a6c7850326ad2aed10ee44350b1b525c0d599bfbb98a3fad72c0ed3d9b81f621c1bf3c617e563aeea5a9d11a72bddb5c35903e67fad4da