7f79d622ed3a2e326a74ef0ffcb76a128c378e414838b5f6ccb695bf0d9537d6

Analysis

max time kernel
121s
max time network
121s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
01/10/2024, 06:29

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General

Target

04b0b16af3f64901011ec4174fc17e67_JaffaCakes118.dll
Size

236KB
MD5

04b0b16af3f64901011ec4174fc17e67
SHA1

c0c826604163a0a12d3a117a462e09edc02bf582
SHA256

7f79d622ed3a2e326a74ef0ffcb76a128c378e414838b5f6ccb695bf0d9537d6
SHA512

2557a58d51d4d1b8dc82d44badd0920c230a2fe3f128f326cbbcf0b1b75ef0084c6a5f75939603d593e4087e81dc753163f56e5cd6b3d106a91b0d9cd95a8734
SSDEEP

1536:Iguo2K86vta10RJQYPIHL+D5IWhxRh/Ci4ucg3/+k5ltr+DRPG8Gz7wk+cQvMQ:Go256vS0RJAL+lHPKi40+66iwkD0L

Score

10^/10

discovery persistence

Malware Config

Signatures

Adds autorun key to be loaded by Explorer.exe on startup 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\ShellServiceObjectDelayLoad	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\ShellServiceObjectDelayLoad\bzrkn = "{5d767d24-d5fe-2a43-e60f-d5fef5ac2505}"	rundll32.exe

Loads dropped DLL 1 IoCs

pid	Process
808	rundll32.exe

Drops file in System32 directory 4 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\omexa.dll	rundll32.exe
File created	C:\Windows\SysWOW64\wumfi.dll	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\wumfi.dll	rundll32.exe
File created	C:\Windows\SysWOW64\omexa.dll	rundll32.exe

System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe

Modifies registry class 5 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{5d767d24-d5fe-2a43-e60f-d5fef5ac2505}	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{5d767d24-d5fe-2a43-e60f-d5fef5ac2505}\	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{5d767d24-d5fe-2a43-e60f-d5fef5ac2505}\InprocServer32	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{5d767d24-d5fe-2a43-e60f-d5fef5ac2505}\InprocServer32\ = "C:\\Windows\\SysWow64\\wumfi.dll"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{5d767d24-d5fe-2a43-e60f-d5fef5ac2505}\InprocServer32\ThreadingModel = "Apartment"	rundll32.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
808	rundll32.exe
808	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	808	rundll32.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
808	rundll32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2124 wrote to memory of 808	2124	rundll32.exe	30
PID 2124 wrote to memory of 808	2124	rundll32.exe	30
PID 2124 wrote to memory of 808	2124	rundll32.exe	30
PID 2124 wrote to memory of 808	2124	rundll32.exe	30
PID 2124 wrote to memory of 808	2124	rundll32.exe	30
PID 2124 wrote to memory of 808	2124	rundll32.exe	30
PID 2124 wrote to memory of 808	2124	rundll32.exe	30

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\04b0b16af3f64901011ec4174fc17e67_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2124
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\04b0b16af3f64901011ec4174fc17e67_JaffaCakes118.dll,#1
  2⤵
  - Adds autorun key to be loaded by Explorer.exe on startup
  - Loads dropped DLL
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  - Modifies registry class
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:808

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

\Windows\SysWOW64\omexa.dll

Filesize
625KB

MD5
95e2376b3323f062eb562b8586d0f14a

SHA1
453d4c3bf4a489433b593420a37bbffb7749875a

SHA256
bd3fa8750123d00aa0967fba44372c46ea002681da9c9b77a4f9261553e26017

SHA512
b898603d07a49237e4dfc6872d5caa7616bae1258926f10e66c4d3f0d81cccefac1e844395b65bb1f308fbc022061b52e51f60658d0a546c04b365b3428cc87d

Download Submit
memory/808-0-0x0000000000401000-0x0000000000408000-memory.dmp

Filesize
28KB

Download
memory/808-6-0x0000000000400000-0x0000000000444000-memory.dmp

Filesize
272KB

Download
memory/808-7-0x0000000000400000-0x0000000000444000-memory.dmp

Filesize
272KB

Download
memory/808-11-0x0000000000400000-0x0000000000444000-memory.dmp

Filesize
272KB

Download