f7301912c71e115e920ef31bcae33926da7fe14074bc75ca9cfb3ac8eb9d7d31

Analysis

max time kernel
150s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20240611-en
resource tags

arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system
submitted
27/06/2024, 06:10

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General

Target

14f21673a6b1348309962b2611345418_JaffaCakes118.exe
Size

30KB
MD5

14f21673a6b1348309962b2611345418
SHA1

d76edae11c175bddc97ba585d8fefdd4c746e687
SHA256

f7301912c71e115e920ef31bcae33926da7fe14074bc75ca9cfb3ac8eb9d7d31
SHA512

6cd9a8791dddf1eabaddafafdbbd5d4f206f160302b6c1c5b0dd420010557b4c5cfedade90dcf52a47d9c3273963c6868edfa4a1c007ff45b257a2601bed32b7
SSDEEP

768:u0GYdxHl1SPKrnkIZjG2htculi9CUKe+wKuQI5/YCoF:/1JnRGEtPl5UKeuub5whF

Score

7^/10

persistence

Malware Config

Signatures

Loads dropped DLL 2 IoCs

pid	Process
804	14f21673a6b1348309962b2611345418_JaffaCakes118.exe
4092	rundll32.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\MSServer = "rundll32.exe C:\\Windows\\system32\\yayvSmJa.dll,#1"	rundll32.exe

Drops file in System32 directory 4 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\yayvSmJa.dll	14f21673a6b1348309962b2611345418_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\opnkhecc.dll	14f21673a6b1348309962b2611345418_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\opnkhecc.dll	14f21673a6b1348309962b2611345418_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\yayvSmJa.dll	14f21673a6b1348309962b2611345418_JaffaCakes118.exe

Modifies registry class 4 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{C8DF5002-7A3B-43FB-9CD2-55D64B325DE4}	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{C8DF5002-7A3B-43FB-9CD2-55D64B325DE4}\InprocServer32	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{C8DF5002-7A3B-43FB-9CD2-55D64B325DE4}\InprocServer32\ = "C:\\Windows\\SysWow64\\yayvSmJa.dll"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{C8DF5002-7A3B-43FB-9CD2-55D64B325DE4}\InprocServer32\ThreadingModel = "Both"	rundll32.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
804	14f21673a6b1348309962b2611345418_JaffaCakes118.exe
804	14f21673a6b1348309962b2611345418_JaffaCakes118.exe
4092	rundll32.exe
4092	rundll32.exe
4092	rundll32.exe
4092	rundll32.exe
4092	rundll32.exe
4092	rundll32.exe
4092	rundll32.exe
4092	rundll32.exe
4092	rundll32.exe
4092	rundll32.exe
4092	rundll32.exe
4092	rundll32.exe
4092	rundll32.exe
4092	rundll32.exe
4092	rundll32.exe
4092	rundll32.exe
4092	rundll32.exe
4092	rundll32.exe
4092	rundll32.exe
4092	rundll32.exe
4092	rundll32.exe
4092	rundll32.exe
4092	rundll32.exe
4092	rundll32.exe
4092	rundll32.exe
4092	rundll32.exe
4092	rundll32.exe
4092	rundll32.exe
4092	rundll32.exe
4092	rundll32.exe
4092	rundll32.exe
4092	rundll32.exe
4092	rundll32.exe
4092	rundll32.exe
4092	rundll32.exe
4092	rundll32.exe
4092	rundll32.exe
4092	rundll32.exe
4092	rundll32.exe
4092	rundll32.exe
4092	rundll32.exe
4092	rundll32.exe
4092	rundll32.exe
4092	rundll32.exe
4092	rundll32.exe
4092	rundll32.exe
4092	rundll32.exe
4092	rundll32.exe
4092	rundll32.exe
4092	rundll32.exe
4092	rundll32.exe
4092	rundll32.exe
4092	rundll32.exe
4092	rundll32.exe
4092	rundll32.exe
4092	rundll32.exe
4092	rundll32.exe
4092	rundll32.exe
4092	rundll32.exe
4092	rundll32.exe
4092	rundll32.exe
4092	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	804	14f21673a6b1348309962b2611345418_JaffaCakes118.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
804	14f21673a6b1348309962b2611345418_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 804 wrote to memory of 616	804	14f21673a6b1348309962b2611345418_JaffaCakes118.exe	5
PID 804 wrote to memory of 4092	804	14f21673a6b1348309962b2611345418_JaffaCakes118.exe	96
PID 804 wrote to memory of 4092	804	14f21673a6b1348309962b2611345418_JaffaCakes118.exe	96
PID 804 wrote to memory of 4092	804	14f21673a6b1348309962b2611345418_JaffaCakes118.exe	96
PID 804 wrote to memory of 4392	804	14f21673a6b1348309962b2611345418_JaffaCakes118.exe	97
PID 804 wrote to memory of 4392	804	14f21673a6b1348309962b2611345418_JaffaCakes118.exe	97
PID 804 wrote to memory of 4392	804	14f21673a6b1348309962b2611345418_JaffaCakes118.exe	97

C:\Windows\system32\winlogon.exe
winlogon.exe
1⤵
PID:616

C:\Users\Admin\AppData\Local\Temp\14f21673a6b1348309962b2611345418_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\14f21673a6b1348309962b2611345418_JaffaCakes118.exe"
1⤵
- Loads dropped DLL
- Drops file in System32 directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:804
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Windows\system32\yayvSmJa.dll,a
  2⤵
  - Loads dropped DLL
  - Adds Run key to start application
  - Modifies registry class
  - Suspicious behavior: EnumeratesProcesses
  PID:4092
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\Temp\removalfile.bat "C:\Users\Admin\AppData\Local\Temp\14f21673a6b1348309962b2611345418_JaffaCakes118.exe"
  2⤵
  PID:4392

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

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\removalfile.bat

Filesize
43B

MD5
9a7ef09167a6f4433681b94351509043

SHA1
259b1375ed8e84943ca1d42646bb416325c89e12

SHA256
d5739a0510d89da572eb0b0d394d4fb4dd361cd9ee0144b9b31c590df93c3be7

SHA512
96b84cd88a0e4b7c1122af3ed6ce5edf0a9a4e9bf79575eadfac16b2c46f1278d57755d29f21d7c6dcb4403be24b7ac7da4837c6cc9c602342a8f2b8e54883df

Download Submit
C:\Windows\SysWOW64\opnkhecc.dll

Filesize
23KB

MD5
42cfba0feac81411155948eedf82d9e5

SHA1
f89a28b0ce0b4f67ff5f67779ccf6194da45bc76

SHA256
9b89a7cbbd6a0bcbcf39b698ca7df09b3b55b81293433c981f6cf7082c86ad24

SHA512
05c41aa423ed0ae815f1b5717aa31b44c7935d22336d89dfe3e6389a0de7c04da2a820df46dd6b8b3cfead8c91168097648dec41bd2e2baf9dbf9422a42aaaac

Download Submit
memory/804-0-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/804-1-0x000000000040E000-0x000000000040F000-memory.dmp

Filesize
4KB

Download
memory/804-2-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/804-8-0x0000000010000000-0x0000000010012000-memory.dmp

Filesize
72KB

Download
memory/804-14-0x0000000010000000-0x0000000010012000-memory.dmp

Filesize
72KB

Download
memory/804-15-0x000000000040E000-0x000000000040F000-memory.dmp

Filesize
4KB

Download
memory/4092-23-0x0000000010000000-0x0000000010010000-memory.dmp

Filesize
64KB

Download
memory/4092-25-0x0000000010000000-0x0000000010012000-memory.dmp

Filesize
72KB

Download
memory/4092-27-0x0000000010000000-0x0000000010010000-memory.dmp

Filesize
64KB

Download