3e405cf51962c5cab5fbfe7825be054082e1ccdc36277d2c87bcff5edc5619d2

Analysis

max time kernel
150s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
10/04/2024, 07:34

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General

Target

ea904e91e1f7cfa59118378c10ea02d5_JaffaCakes118.exe
Size

52KB
MD5

ea904e91e1f7cfa59118378c10ea02d5
SHA1

e6e331b02feb4fd195576ac7b7ed1c302055c40b
SHA256

3e405cf51962c5cab5fbfe7825be054082e1ccdc36277d2c87bcff5edc5619d2
SHA512

6da468b53ff3601c494bc32b8e075f12ed49a9fba4f33524a0397200eb88f701c815bde6534be237c371e203d55bc2e39cf3b6882058f5471223f732afa9d440
SSDEEP

768:tzFfdBozItqlxy+zv9HtixQaPQPS71cZdb109YSBkO6gKYOmGBH:tzr0Itq7yMv9Htix/PjWvO9YSSTBY8BH

Score

7^/10

persistence

Malware Config

Signatures

Loads dropped DLL 2 IoCs

pid	Process
1048	ea904e91e1f7cfa59118378c10ea02d5_JaffaCakes118.exe
4980	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\\vtUlLCus.dll,#1"	rundll32.exe

Drops file in System32 directory 4 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\vtUlLCus.dll	ea904e91e1f7cfa59118378c10ea02d5_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\xxyxXNfF.dll	ea904e91e1f7cfa59118378c10ea02d5_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\xxyxXNfF.dll	ea904e91e1f7cfa59118378c10ea02d5_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\vtUlLCus.dll	ea904e91e1f7cfa59118378c10ea02d5_JaffaCakes118.exe

Modifies registry class 4 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{BFEC4FFD-9C0E-4B2E-A6C7-03A9437447D9}\InprocServer32	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{BFEC4FFD-9C0E-4B2E-A6C7-03A9437447D9}\InprocServer32\ = "C:\\Windows\\SysWow64\\vtUlLCus.dll"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{BFEC4FFD-9C0E-4B2E-A6C7-03A9437447D9}\InprocServer32\ThreadingModel = "Both"	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{BFEC4FFD-9C0E-4B2E-A6C7-03A9437447D9}	rundll32.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
1048	ea904e91e1f7cfa59118378c10ea02d5_JaffaCakes118.exe
1048	ea904e91e1f7cfa59118378c10ea02d5_JaffaCakes118.exe
4980	rundll32.exe
4980	rundll32.exe
4980	rundll32.exe
4980	rundll32.exe
4980	rundll32.exe
4980	rundll32.exe
4980	rundll32.exe
4980	rundll32.exe
4980	rundll32.exe
4980	rundll32.exe
4980	rundll32.exe
4980	rundll32.exe
4980	rundll32.exe
4980	rundll32.exe
4980	rundll32.exe
4980	rundll32.exe
4980	rundll32.exe
4980	rundll32.exe
4980	rundll32.exe
4980	rundll32.exe
4980	rundll32.exe
4980	rundll32.exe
4980	rundll32.exe
4980	rundll32.exe
4980	rundll32.exe
4980	rundll32.exe
4980	rundll32.exe
4980	rundll32.exe
4980	rundll32.exe
4980	rundll32.exe
4980	rundll32.exe
4980	rundll32.exe
4980	rundll32.exe
4980	rundll32.exe
4980	rundll32.exe
4980	rundll32.exe
4980	rundll32.exe
4980	rundll32.exe
4980	rundll32.exe
4980	rundll32.exe
4980	rundll32.exe
4980	rundll32.exe
4980	rundll32.exe
4980	rundll32.exe
4980	rundll32.exe
4980	rundll32.exe
4980	rundll32.exe
4980	rundll32.exe
4980	rundll32.exe
4980	rundll32.exe
4980	rundll32.exe
4980	rundll32.exe
4980	rundll32.exe
4980	rundll32.exe
4980	rundll32.exe
4980	rundll32.exe
4980	rundll32.exe
4980	rundll32.exe
4980	rundll32.exe
4980	rundll32.exe
4980	rundll32.exe
4980	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1048	ea904e91e1f7cfa59118378c10ea02d5_JaffaCakes118.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1048	ea904e91e1f7cfa59118378c10ea02d5_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1048 wrote to memory of 636	1048	ea904e91e1f7cfa59118378c10ea02d5_JaffaCakes118.exe	5
PID 1048 wrote to memory of 4980	1048	ea904e91e1f7cfa59118378c10ea02d5_JaffaCakes118.exe	98
PID 1048 wrote to memory of 4980	1048	ea904e91e1f7cfa59118378c10ea02d5_JaffaCakes118.exe	98
PID 1048 wrote to memory of 4980	1048	ea904e91e1f7cfa59118378c10ea02d5_JaffaCakes118.exe	98
PID 1048 wrote to memory of 2084	1048	ea904e91e1f7cfa59118378c10ea02d5_JaffaCakes118.exe	99
PID 1048 wrote to memory of 2084	1048	ea904e91e1f7cfa59118378c10ea02d5_JaffaCakes118.exe	99
PID 1048 wrote to memory of 2084	1048	ea904e91e1f7cfa59118378c10ea02d5_JaffaCakes118.exe	99

C:\Windows\system32\winlogon.exe
winlogon.exe
1⤵
PID:636

C:\Users\Admin\AppData\Local\Temp\ea904e91e1f7cfa59118378c10ea02d5_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\ea904e91e1f7cfa59118378c10ea02d5_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:1048
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Windows\system32\vtUlLCus.dll,a
  2⤵
  - Loads dropped DLL
  - Adds Run key to start application
  - Modifies registry class
  - Suspicious behavior: EnumeratesProcesses
  PID:4980
- 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\ea904e91e1f7cfa59118378c10ea02d5_JaffaCakes118.exe"
  2⤵
  PID:2084

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\xxyxXNfF.dll

Filesize
37KB

MD5
6f3f3e47806e643ebe0ef26f298d6438

SHA1
3e47e11fec25b78189de73b9abf06cdae1fe2eb0

SHA256
75af970866ba003cafe11f98f90ac8df548061e911c9b4058dbd2587972afd38

SHA512
27af7de073dfc2d989e61b50e35cdc2a2228348de2b1da1beb6c0cccb32b2516d80e8549b4c1b6d125511105bc99a1f77e06ea3114035417104dc2a1fc341f19

Download Submit
memory/1048-0-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/1048-1-0x0000000002020000-0x0000000002026000-memory.dmp

Filesize
24KB

Download
memory/1048-7-0x0000000010000000-0x0000000010010000-memory.dmp

Filesize
64KB

Download
memory/1048-8-0x00000000021C0000-0x00000000021C6000-memory.dmp

Filesize
24KB

Download
memory/1048-13-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/1048-14-0x0000000010000000-0x0000000010010000-memory.dmp

Filesize
64KB

Download
memory/1048-17-0x0000000002020000-0x0000000002026000-memory.dmp

Filesize
24KB

Download
memory/4980-23-0x0000000010000000-0x0000000010010000-memory.dmp

Filesize
64KB

Download
memory/4980-24-0x0000000000A90000-0x0000000000A96000-memory.dmp

Filesize
24KB

Download
memory/4980-26-0x0000000010000000-0x0000000010010000-memory.dmp

Filesize
64KB

Download