942c176ed1724784600ee87fd55a27e08f1202e584194f3b374c102492d5250c

Analysis

max time kernel
120s
max time network
124s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
23-06-2024 22:34

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General

Target

031534f957de7c66977e8251158f920b_JaffaCakes118.dll
Size

229KB
MD5

031534f957de7c66977e8251158f920b
SHA1

3b4dfd9415997917f7de5a5a2ab66383508ab05a
SHA256

942c176ed1724784600ee87fd55a27e08f1202e584194f3b374c102492d5250c
SHA512

052d19d84aea5b7d0c9b150044f72b83c999539cb3368cfb47787275a72df7cccecc7692cc1be3ee3dfd9e8669e23cd3ed33ddc0db7462a8d9c892a1dc74ba04
SSDEEP

1536:e1fHU9m5Wk74pyZDwOR7U7KB5heRavW5adgk6lB5FCQ0WlGUGwTwk9:uH0qLcpyh7UGztu5dlL4R6Twk9

Score

10^/10

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\ouwbqifoz = "{a44f4e7e-2cc7-711c-3dd8-2cc7c6f63fed}"	rundll32.exe

Loads dropped DLL 1 IoCs

pid	Process
1732	rundll32.exe

Drops file in System32 directory 4 IoCs

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

Modifies registry class 5 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{a44f4e7e-2cc7-711c-3dd8-2cc7c6f63fed}\InprocServer32	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{a44f4e7e-2cc7-711c-3dd8-2cc7c6f63fed}\InprocServer32\ = "C:\\Windows\\SysWow64\\jprwldaju.dll"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{a44f4e7e-2cc7-711c-3dd8-2cc7c6f63fed}\InprocServer32\ThreadingModel = "Apartment"	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{a44f4e7e-2cc7-711c-3dd8-2cc7c6f63fed}	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{a44f4e7e-2cc7-711c-3dd8-2cc7c6f63fed}\	rundll32.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
1732	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1732	rundll32.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1732	rundll32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1848 wrote to memory of 1732	1848	rundll32.exe	28
PID 1848 wrote to memory of 1732	1848	rundll32.exe	28
PID 1848 wrote to memory of 1732	1848	rundll32.exe	28
PID 1848 wrote to memory of 1732	1848	rundll32.exe	28
PID 1848 wrote to memory of 1732	1848	rundll32.exe	28
PID 1848 wrote to memory of 1732	1848	rundll32.exe	28
PID 1848 wrote to memory of 1732	1848	rundll32.exe	28

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\031534f957de7c66977e8251158f920b_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1848
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\031534f957de7c66977e8251158f920b_JaffaCakes118.dll,#1
  2⤵
  - Adds autorun key to be loaded by Explorer.exe on startup
  - Loads dropped DLL
  - Drops file in System32 directory
  - Modifies registry class
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:1732

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

\Windows\SysWOW64\bhjodvsbm.dll

Filesize
625KB

MD5
95e2376b3323f062eb562b8586d0f14a

SHA1
453d4c3bf4a489433b593420a37bbffb7749875a

SHA256
bd3fa8750123d00aa0967fba44372c46ea002681da9c9b77a4f9261553e26017

SHA512
b898603d07a49237e4dfc6872d5caa7616bae1258926f10e66c4d3f0d81cccefac1e844395b65bb1f308fbc022061b52e51f60658d0a546c04b365b3428cc87d

Download Submit
memory/1732-1-0x0000000000401000-0x0000000000408000-memory.dmp

Filesize
28KB

Download
memory/1732-6-0x0000000000400000-0x0000000000441000-memory.dmp

Filesize
260KB

Download
memory/1732-9-0x0000000000400000-0x0000000000441000-memory.dmp

Filesize
260KB

Download