Analysis
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max time kernel
150s -
max time network
150s -
platform
windows7_x64 -
resource
win7-20240903-en -
resource tags
arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system -
submitted
01/10/2024, 06:15
Behavioral task
behavioral1
Sample
04a83c436644186a0c4a66ee4704c2bf_JaffaCakes118.exe
Resource
win7-20240903-en
General
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Target
04a83c436644186a0c4a66ee4704c2bf_JaffaCakes118.exe
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Size
61KB
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MD5
04a83c436644186a0c4a66ee4704c2bf
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SHA1
2d1634bdb85ae682d5070e87c0d55847f6fe9a11
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SHA256
b48ddae4ed2ce374ef45207b020197c1e8b2ca0ff75cf1c3e1bf846e67f8df5f
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SHA512
6287f0f2f6b20f8328d2d2d38e8d5a7e14b8c076a73dc3b9fc9b0f10d106bb37ba164f0e2999274b2dd649eea32cf0b7e9a253b6b3b59e61a1ff75326ba1c982
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SSDEEP
1536:bhKkynfDuTK1e0ySeOLKCJnLrdO7zLm+KmIey:okybuL+efCJnLJO7HmlWy
Malware Config
Signatures
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Drops file in Drivers directory 1 IoCs
description ioc Process File opened for modification C:\Windows\system32\drivers\etc\hosts u2h43b.exe -
Deletes itself 1 IoCs
pid Process 2604 cmd.exe -
Executes dropped EXE 3 IoCs
pid Process 2712 u2h43b.exe 1812 u2h43b.exe 2408 u2h43b.exe -
Loads dropped DLL 3 IoCs
pid Process 2376 04a83c436644186a0c4a66ee4704c2bf_JaffaCakes118.exe 2376 04a83c436644186a0c4a66ee4704c2bf_JaffaCakes118.exe 2712 u2h43b.exe -
Adds Run key to start application 2 TTPs 2 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\bg70h = "C:\\Users\\Admin\\AppData\\Roaming\\u2h43b.exe" 04a83c436644186a0c4a66ee4704c2bf_JaffaCakes118.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\RunOnce\GrpConv = "grpconv -o" Rundll32.exe -
description ioc Process Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA 04a83c436644186a0c4a66ee4704c2bf_JaffaCakes118.exe -
resource yara_rule behavioral1/memory/2376-0-0x0000000000400000-0x0000000000430000-memory.dmp upx behavioral1/files/0x0008000000012102-10.dat upx behavioral1/memory/2376-28-0x0000000000400000-0x0000000000430000-memory.dmp upx behavioral1/memory/2712-36-0x0000000002EF0000-0x0000000002F20000-memory.dmp upx behavioral1/memory/1812-40-0x0000000000400000-0x0000000000430000-memory.dmp upx behavioral1/memory/2712-44-0x0000000000400000-0x0000000000430000-memory.dmp upx behavioral1/memory/1812-47-0x0000000000400000-0x0000000000430000-memory.dmp upx behavioral1/memory/1812-58-0x0000000000400000-0x0000000000430000-memory.dmp upx behavioral1/memory/2712-61-0x0000000000400000-0x0000000000430000-memory.dmp upx behavioral1/memory/2712-74-0x0000000000400000-0x0000000000430000-memory.dmp upx behavioral1/memory/2408-75-0x0000000000400000-0x0000000000430000-memory.dmp upx -
Drops file in Windows directory 1 IoCs
description ioc Process File opened for modification C:\Windows\INF\setupapi.app.log Rundll32.exe -
Launches sc.exe 2 IoCs
Sc.exe is a Windows utlilty to control services on the system.
pid Process 2224 sc.exe 2456 sc.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 14 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 u2h43b.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language u2h43b.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language net.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language net1.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language runonce.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language cmd.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 04a83c436644186a0c4a66ee4704c2bf_JaffaCakes118.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language sc.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language Rundll32.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language sc.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language net1.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language u2h43b.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language net.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language grpconv.exe -
Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
description ioc Process Key opened \Registry\Machine\HARDWARE\DESCRIPTION\System\CentralProcessor\0 runonce.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz runonce.exe -
description ioc Process Key created \REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000\Software\Microsoft\Internet Explorer\Main u2h43b.exe Key created \REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000\Software\Microsoft\Internet Explorer\Main u2h43b.exe Key created \REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000\Software\Microsoft\Internet Explorer\Main 04a83c436644186a0c4a66ee4704c2bf_JaffaCakes118.exe Key created \REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000\Software\Microsoft\Internet Explorer\Main u2h43b.exe -
Runs net.exe
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Suspicious use of AdjustPrivilegeToken 7 IoCs
description pid Process Token: SeRestorePrivilege 2832 Rundll32.exe Token: SeRestorePrivilege 2832 Rundll32.exe Token: SeRestorePrivilege 2832 Rundll32.exe Token: SeRestorePrivilege 2832 Rundll32.exe Token: SeRestorePrivilege 2832 Rundll32.exe Token: SeRestorePrivilege 2832 Rundll32.exe Token: SeRestorePrivilege 2832 Rundll32.exe -
Suspicious use of SetWindowsHookEx 12 IoCs
pid Process 2376 04a83c436644186a0c4a66ee4704c2bf_JaffaCakes118.exe 2376 04a83c436644186a0c4a66ee4704c2bf_JaffaCakes118.exe 2376 04a83c436644186a0c4a66ee4704c2bf_JaffaCakes118.exe 2712 u2h43b.exe 2712 u2h43b.exe 2712 u2h43b.exe 1812 u2h43b.exe 1812 u2h43b.exe 1812 u2h43b.exe 2408 u2h43b.exe 2408 u2h43b.exe 2408 u2h43b.exe -
Suspicious use of WriteProcessMemory 55 IoCs
description pid Process procid_target PID 2376 wrote to memory of 2788 2376 04a83c436644186a0c4a66ee4704c2bf_JaffaCakes118.exe 31 PID 2376 wrote to memory of 2788 2376 04a83c436644186a0c4a66ee4704c2bf_JaffaCakes118.exe 31 PID 2376 wrote to memory of 2788 2376 04a83c436644186a0c4a66ee4704c2bf_JaffaCakes118.exe 31 PID 2376 wrote to memory of 2788 2376 04a83c436644186a0c4a66ee4704c2bf_JaffaCakes118.exe 31 PID 2376 wrote to memory of 2224 2376 04a83c436644186a0c4a66ee4704c2bf_JaffaCakes118.exe 32 PID 2376 wrote to memory of 2224 2376 04a83c436644186a0c4a66ee4704c2bf_JaffaCakes118.exe 32 PID 2376 wrote to memory of 2224 2376 04a83c436644186a0c4a66ee4704c2bf_JaffaCakes118.exe 32 PID 2376 wrote to memory of 2224 2376 04a83c436644186a0c4a66ee4704c2bf_JaffaCakes118.exe 32 PID 2376 wrote to memory of 2692 2376 04a83c436644186a0c4a66ee4704c2bf_JaffaCakes118.exe 33 PID 2376 wrote to memory of 2692 2376 04a83c436644186a0c4a66ee4704c2bf_JaffaCakes118.exe 33 PID 2376 wrote to memory of 2692 2376 04a83c436644186a0c4a66ee4704c2bf_JaffaCakes118.exe 33 PID 2376 wrote to memory of 2692 2376 04a83c436644186a0c4a66ee4704c2bf_JaffaCakes118.exe 33 PID 2376 wrote to memory of 2456 2376 04a83c436644186a0c4a66ee4704c2bf_JaffaCakes118.exe 34 PID 2376 wrote to memory of 2456 2376 04a83c436644186a0c4a66ee4704c2bf_JaffaCakes118.exe 34 PID 2376 wrote to memory of 2456 2376 04a83c436644186a0c4a66ee4704c2bf_JaffaCakes118.exe 34 PID 2376 wrote to memory of 2456 2376 04a83c436644186a0c4a66ee4704c2bf_JaffaCakes118.exe 34 PID 2376 wrote to memory of 2712 2376 04a83c436644186a0c4a66ee4704c2bf_JaffaCakes118.exe 36 PID 2376 wrote to memory of 2712 2376 04a83c436644186a0c4a66ee4704c2bf_JaffaCakes118.exe 36 PID 2376 wrote to memory of 2712 2376 04a83c436644186a0c4a66ee4704c2bf_JaffaCakes118.exe 36 PID 2376 wrote to memory of 2712 2376 04a83c436644186a0c4a66ee4704c2bf_JaffaCakes118.exe 36 PID 2788 wrote to memory of 2452 2788 net.exe 41 PID 2788 wrote to memory of 2452 2788 net.exe 41 PID 2788 wrote to memory of 2452 2788 net.exe 41 PID 2788 wrote to memory of 2452 2788 net.exe 41 PID 2692 wrote to memory of 2608 2692 net.exe 40 PID 2692 wrote to memory of 2608 2692 net.exe 40 PID 2692 wrote to memory of 2608 2692 net.exe 40 PID 2692 wrote to memory of 2608 2692 net.exe 40 PID 2376 wrote to memory of 2832 2376 04a83c436644186a0c4a66ee4704c2bf_JaffaCakes118.exe 42 PID 2376 wrote to memory of 2832 2376 04a83c436644186a0c4a66ee4704c2bf_JaffaCakes118.exe 42 PID 2376 wrote to memory of 2832 2376 04a83c436644186a0c4a66ee4704c2bf_JaffaCakes118.exe 42 PID 2376 wrote to memory of 2832 2376 04a83c436644186a0c4a66ee4704c2bf_JaffaCakes118.exe 42 PID 2376 wrote to memory of 2832 2376 04a83c436644186a0c4a66ee4704c2bf_JaffaCakes118.exe 42 PID 2376 wrote to memory of 2832 2376 04a83c436644186a0c4a66ee4704c2bf_JaffaCakes118.exe 42 PID 2376 wrote to memory of 2832 2376 04a83c436644186a0c4a66ee4704c2bf_JaffaCakes118.exe 42 PID 2832 wrote to memory of 2852 2832 Rundll32.exe 43 PID 2832 wrote to memory of 2852 2832 Rundll32.exe 43 PID 2832 wrote to memory of 2852 2832 Rundll32.exe 43 PID 2832 wrote to memory of 2852 2832 Rundll32.exe 43 PID 2376 wrote to memory of 2604 2376 04a83c436644186a0c4a66ee4704c2bf_JaffaCakes118.exe 44 PID 2376 wrote to memory of 2604 2376 04a83c436644186a0c4a66ee4704c2bf_JaffaCakes118.exe 44 PID 2376 wrote to memory of 2604 2376 04a83c436644186a0c4a66ee4704c2bf_JaffaCakes118.exe 44 PID 2376 wrote to memory of 2604 2376 04a83c436644186a0c4a66ee4704c2bf_JaffaCakes118.exe 44 PID 2852 wrote to memory of 816 2852 runonce.exe 46 PID 2852 wrote to memory of 816 2852 runonce.exe 46 PID 2852 wrote to memory of 816 2852 runonce.exe 46 PID 2852 wrote to memory of 816 2852 runonce.exe 46 PID 2712 wrote to memory of 1812 2712 u2h43b.exe 48 PID 2712 wrote to memory of 1812 2712 u2h43b.exe 48 PID 2712 wrote to memory of 1812 2712 u2h43b.exe 48 PID 2712 wrote to memory of 1812 2712 u2h43b.exe 48 PID 2712 wrote to memory of 2408 2712 u2h43b.exe 53 PID 2712 wrote to memory of 2408 2712 u2h43b.exe 53 PID 2712 wrote to memory of 2408 2712 u2h43b.exe 53 PID 2712 wrote to memory of 2408 2712 u2h43b.exe 53
Processes
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C:\Users\Admin\AppData\Local\Temp\04a83c436644186a0c4a66ee4704c2bf_JaffaCakes118.exe"C:\Users\Admin\AppData\Local\Temp\04a83c436644186a0c4a66ee4704c2bf_JaffaCakes118.exe"1⤵
- Loads dropped DLL
- Adds Run key to start application
- Checks whether UAC is enabled
- System Location Discovery: System Language Discovery
- Modifies Internet Explorer settings
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2376 -
C:\Windows\SysWOW64\net.exenet.exe stop "Security Center"2⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2788 -
C:\Windows\SysWOW64\net1.exeC:\Windows\system32\net1 stop "Security Center"3⤵
- System Location Discovery: System Language Discovery
PID:2452
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C:\Windows\SysWOW64\sc.exesc config wscsvc start= DISABLED2⤵
- Launches sc.exe
- System Location Discovery: System Language Discovery
PID:2224
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C:\Windows\SysWOW64\net.exenet.exe stop "Windows Firewall/Internet Connection Sharing (ICS)"2⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2692 -
C:\Windows\SysWOW64\net1.exeC:\Windows\system32\net1 stop "Windows Firewall/Internet Connection Sharing (ICS)"3⤵
- System Location Discovery: System Language Discovery
PID:2608
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C:\Windows\SysWOW64\sc.exesc config SharedAccess start= DISABLED2⤵
- Launches sc.exe
- System Location Discovery: System Language Discovery
PID:2456
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C:\Users\Admin\AppData\Roaming\u2h43b.exeC:\Users\Admin\AppData\Roaming\u2h43b.exe2⤵
- Drops file in Drivers directory
- Executes dropped EXE
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Modifies Internet Explorer settings
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2712 -
C:\Users\Admin\AppData\Roaming\u2h43b.exeC:\Users\Admin\AppData\Roaming\u2h43b.exe -d8497779D0EC9E639B9489DBA85C103061E8B81F1EA88E821761AA1D74D9BB2DA7C00A1BC562ABBE532464BE43709BF9776B5D43CDF743D61D6EF611D700F2052A5ECC966F4FC9F734E0F9DDA4BB06268E9DE662A68D9E6E60CBE2D45BD4922A4E4B34153F4EA6BDB84423463E02395C07CC12714B3E85B6CAE8C4709710F00B75D4B9831A5E737F087B6F1A25297403F759848482CD7556B900B306F08E944AD7613A0DD92F45D734D1AF6AC3EA08E25573C3C8F81A3CD79C7CAA9264078B66CD4AB6B7988C4768B0B7BA3398110E7A1E957B2F79DD0FC6DA94AB32315D360B75BE7484496245AEB36379A0B37FDF4B72F1A9BB2AFDC5CE8CA7A8E06C53E8AE131DFCA60078F23978364BB87BFF69E586ECE2910230CA53E0037BDF5CC61BE84BAF6C1366A212A17E7D92758B5AB0DE12BFDCD77A6D9D0F35F6CFF88E892C4B49CDC3D84895508A3964C3F1CF638AC702C0F375526E7163E3CDE56F1151AA521BC3F91D67426954D07EEA5C19F9E23B074B9590ACF45F1932D67035F913DAB493F7F4D91771CEB1DEDB039A90D055A9F4AA9635E0E34189B078D86DBD8C65F4D891A3⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Modifies Internet Explorer settings
- Suspicious use of SetWindowsHookEx
PID:1812
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C:\Users\Admin\AppData\Roaming\u2h43b.exeC:\Users\Admin\AppData\Roaming\u2h43b.exe -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⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Modifies Internet Explorer settings
- Suspicious use of SetWindowsHookEx
PID:2408
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C:\Windows\SysWOW64\Rundll32.exeRundll32.exe setupapi,InstallHinfSection DefaultInstall 128 C:\Users\Admin\AppData\Roaming\mdinstall.inf2⤵
- Adds Run key to start application
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2832 -
C:\Windows\SysWOW64\runonce.exe"C:\Windows\system32\runonce.exe" -r3⤵
- System Location Discovery: System Language Discovery
- Checks processor information in registry
- Suspicious use of WriteProcessMemory
PID:2852 -
C:\Windows\SysWOW64\grpconv.exe"C:\Windows\System32\grpconv.exe" -o4⤵
- System Location Discovery: System Language Discovery
PID:816
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C:\Windows\SysWOW64\cmd.execmd /c C:\Users\Admin\AppData\Roaming\5xb4y8f33.bat2⤵
- Deletes itself
- System Location Discovery: System Language Discovery
PID:2604
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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
1Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
218B
MD5870ec372d76544921f6ed61d9141a0b7
SHA167ebd92c095f6587413fc561cfac1a3bef58939d
SHA256079bc320087fee43c223c56da7f6162dde5ec19aaaa2c13ea501fca4df7e139f
SHA512c7f6a52026c2f5dd2cda0fec7c61902c17dfb6ee5a73f21586d3399ade5a9e43c9570a0bc257dea9075be3eeb63c1739232e955c53c9c11cd0f150ab97e4f78f
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Filesize
410B
MD53ccb3b743b0d79505a75476800c90737
SHA1b5670f123572972883655ef91c69ecc2be987a63
SHA2565d96bec9bc06fd8d7abc11efbb3cb263844ee0416910f63581dd7848b4e1d8dd
SHA51209b1cdd4393f515f7569fbccc3f63051823ed7292b6e572bc9a34e4389b727b2914b22118e874864ccb32ef63016b2abd6d84510fd46fdee712fd84be59c114e
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Filesize
61KB
MD504a83c436644186a0c4a66ee4704c2bf
SHA12d1634bdb85ae682d5070e87c0d55847f6fe9a11
SHA256b48ddae4ed2ce374ef45207b020197c1e8b2ca0ff75cf1c3e1bf846e67f8df5f
SHA5126287f0f2f6b20f8328d2d2d38e8d5a7e14b8c076a73dc3b9fc9b0f10d106bb37ba164f0e2999274b2dd649eea32cf0b7e9a253b6b3b59e61a1ff75326ba1c982