6a3735b3012844eb5e8e85858fca97ea358b4e61c5fd0a2d04c192c6d5edba98

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
16-04-2024 10:02

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General

Target

f3405f36d59f23af2627100afeccd206_JaffaCakes118.dll
Size

32KB
MD5

f3405f36d59f23af2627100afeccd206
SHA1

5d2105d94954ec84fc95c742b47959733b8efda2
SHA256

6a3735b3012844eb5e8e85858fca97ea358b4e61c5fd0a2d04c192c6d5edba98
SHA512

7ead3532ef71a451f21a8604dd7bf68d0e5a6ae1ca45aa0ded55530acbabe0ff4e7fe6c7f272a389dbbc8cec8fbf2e54c016354d2f04c80b7acb557138586e33
SSDEEP

768:Ni9DMaIZcts/0LlFCEkwI0r1W2JFrptIRjwobvBUwag:Ni9DMak21L+EkV0r1W2JRptIRjwoNtx

Score

7^/10

persistence

Malware Config

Signatures

Loads dropped DLL 3 IoCs

pid	Process
1292	rundll32.exe
1292	rundll32.exe
3628	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\\byXQJBSj.dll,#1"	rundll32.exe

Drops file in System32 directory 2 IoCs

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

Modifies registry class 4 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{B46E1C09-140B-4996-A17A-DCEA9C9283AD}\InprocServer32	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{B46E1C09-140B-4996-A17A-DCEA9C9283AD}\InprocServer32\ = "C:\\Windows\\SysWow64\\byXQJBSj.dll"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{B46E1C09-140B-4996-A17A-DCEA9C9283AD}\InprocServer32\ThreadingModel = "Both"	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{B46E1C09-140B-4996-A17A-DCEA9C9283AD}	rundll32.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
1292	rundll32.exe
1292	rundll32.exe
3628	rundll32.exe
3628	rundll32.exe
3628	rundll32.exe
3628	rundll32.exe
3628	rundll32.exe
3628	rundll32.exe
3628	rundll32.exe
3628	rundll32.exe
3628	rundll32.exe
3628	rundll32.exe
3628	rundll32.exe
3628	rundll32.exe
3628	rundll32.exe
3628	rundll32.exe
3628	rundll32.exe
3628	rundll32.exe
3628	rundll32.exe
3628	rundll32.exe
3628	rundll32.exe
3628	rundll32.exe
3628	rundll32.exe
3628	rundll32.exe
3628	rundll32.exe
3628	rundll32.exe
3628	rundll32.exe
3628	rundll32.exe
3628	rundll32.exe
3628	rundll32.exe
3628	rundll32.exe
3628	rundll32.exe
3628	rundll32.exe
3628	rundll32.exe
3628	rundll32.exe
3628	rundll32.exe
3628	rundll32.exe
3628	rundll32.exe
3628	rundll32.exe
3628	rundll32.exe
3628	rundll32.exe
3628	rundll32.exe
3628	rundll32.exe
3628	rundll32.exe
3628	rundll32.exe
3628	rundll32.exe
3628	rundll32.exe
3628	rundll32.exe
3628	rundll32.exe
3628	rundll32.exe
3628	rundll32.exe
3628	rundll32.exe
3628	rundll32.exe
3628	rundll32.exe
3628	rundll32.exe
3628	rundll32.exe
3628	rundll32.exe
3628	rundll32.exe
3628	rundll32.exe
3628	rundll32.exe
3628	rundll32.exe
3628	rundll32.exe
3628	rundll32.exe
3628	rundll32.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
1292	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1292	rundll32.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1292	rundll32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 3956 wrote to memory of 1292	3956	rundll32.exe	86
PID 3956 wrote to memory of 1292	3956	rundll32.exe	86
PID 3956 wrote to memory of 1292	3956	rundll32.exe	86
PID 1292 wrote to memory of 616	1292	rundll32.exe	5
PID 1292 wrote to memory of 3628	1292	rundll32.exe	96
PID 1292 wrote to memory of 3628	1292	rundll32.exe	96
PID 1292 wrote to memory of 3628	1292	rundll32.exe	96

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

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\f3405f36d59f23af2627100afeccd206_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:3956
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\f3405f36d59f23af2627100afeccd206_JaffaCakes118.dll,#1
  2⤵
  - Loads dropped DLL
  - Drops file in System32 directory
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: RenamesItself
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1292
- - C:\Windows\SysWOW64\rundll32.exe
    rundll32.exe C:\Windows\system32\byXQJBSj.dll,a
    3⤵
    - Loads dropped DLL
    - Adds Run key to start application
    - Modifies registry class
    - Suspicious behavior: EnumeratesProcesses
    PID:3628

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:\Windows\SysWOW64\byXQJBSj.dll

Filesize
32KB

MD5
f3405f36d59f23af2627100afeccd206

SHA1
5d2105d94954ec84fc95c742b47959733b8efda2

SHA256
6a3735b3012844eb5e8e85858fca97ea358b4e61c5fd0a2d04c192c6d5edba98

SHA512
7ead3532ef71a451f21a8604dd7bf68d0e5a6ae1ca45aa0ded55530acbabe0ff4e7fe6c7f272a389dbbc8cec8fbf2e54c016354d2f04c80b7acb557138586e33

Download Submit
memory/1292-0-0x0000000000C80000-0x0000000000C85000-memory.dmp

Filesize
20KB

Download
memory/1292-1-0x0000000010000000-0x0000000010010000-memory.dmp

Filesize
64KB

Download
memory/1292-8-0x0000000002BA0000-0x0000000002BA5000-memory.dmp

Filesize
20KB

Download
memory/1292-9-0x0000000002840000-0x0000000002850000-memory.dmp

Filesize
64KB

Download
memory/1292-12-0x0000000000C80000-0x0000000000C85000-memory.dmp

Filesize
20KB

Download
memory/3628-17-0x0000000010000000-0x0000000010010000-memory.dmp

Filesize
64KB

Download
memory/3628-18-0x00000000007F0000-0x00000000007F5000-memory.dmp

Filesize
20KB

Download
memory/3628-19-0x0000000010000000-0x0000000010010000-memory.dmp

Filesize
64KB

Download