b70425bb4d530c38038b7e4f5869063c78beb5fe85f6b98e048c289ecc8ca357

Analysis

max time kernel
133s
max time network
109s
platform
windows10-2004_x64
resource
win10v2004-20240910-en
resource tags

arch:x64arch:x86image:win10v2004-20240910-enlocale:en-usos:windows10-2004-x64system
submitted
01/10/2024, 09:29

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General

Target
0541ff4b6101849951e71f0ff68d3c46_JaffaCakes118.dll
Size 231KB
Sample241001-lf7zaascmn
SHA256 b70425bb4d530c38038b7e4f5869063c78beb5fe85f6b98e048c289ecc8ca357
MD5 0541ff4b6101849951e71f0ff68d3c46
SHA1 f69dce3b3c3391f848fff4d75dda95f8365dcffb
SHA512 37f5e83baba5f5cda1c7d75009aaac1ae333908b7fb65934576cb3a6b54ac15960c84500db660f566e2510f7921fac897cf80868e88c79fd8ef1b7429e7afd32
SSDEEP 3072:zysX0WxnWd/IkmL+PViEbmzwtz/wk8YWba:mskd/IkmuVfyWdMa
MD5 SHA1 SHA512 SSDEEP

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
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\ShellServiceObjectDelayLoad\ijlornm = "{ad90732d-2518-7a6d-3629-2518fba5aa4c}"	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\ShellServiceObjectDelayLoad	rundll32.exe

Loads dropped DLL 1 IoCs

pid	Process
3968	rundll32.exe

Drops file in System32 directory 4 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\vwybeaz.dll	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\vwybeaz.dll	rundll32.exe
File created	C:\Windows\SysWOW64\degjmih.dll	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\degjmih.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\{ad90732d-2518-7a6d-3629-2518fba5aa4c}	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{ad90732d-2518-7a6d-3629-2518fba5aa4c}\	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{ad90732d-2518-7a6d-3629-2518fba5aa4c}\InprocServer32	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{ad90732d-2518-7a6d-3629-2518fba5aa4c}\InprocServer32\ = "C:\\Windows\\SysWow64\\degjmih.dll"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{ad90732d-2518-7a6d-3629-2518fba5aa4c}\InprocServer32\ThreadingModel = "Apartment"	rundll32.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3968	rundll32.exe
3968	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3968	rundll32.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3968	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3508 wrote to memory of 3968	3508	rundll32.exe	84
PID 3508 wrote to memory of 3968	3508	rundll32.exe	84
PID 3508 wrote to memory of 3968	3508	rundll32.exe	84

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\0541ff4b6101849951e71f0ff68d3c46_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:3508
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\0541ff4b6101849951e71f0ff68d3c46_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:3968

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

vwybeaz.dll

Path C:\Windows\SysWOW64\vwybeaz.dll
Size 478KB
SHA256 768c286674371564b5e6095edb56e0a4231f341be895da69cfccca5160029774
MD5 e99416267b61f52fa5ab994019efd359
SHA1 86d31eae707db7fe51d2556394fcf0e8e9f6b0fd
SHA512 0a1c7579a9c787c2c1bef35f0660e72e74b42824e14ebea63b87ed25ddaf107e3746567bb431cab41a2f6719fad2c22d96e0715a1fe085d75805d7d66f7f05ae
SSDEEP 12288:HIrZjxkFh7p/y4W0fPcdZ7cae7J/XoWwsNJ6Ir:HIrZjxw9y4WSPucaeFXoWwsNJ6Ir
MD5 SHA1 SHA512 SSDEEP

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memory/3968-0-0x0000000000401000-0x0000000000408000-memory.dmp

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memory/3968-7-0x0000000000400000-0x0000000000443000-memory.dmp

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memory/3968-10-0x0000000000400000-0x0000000000443000-memory.dmp

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memory/3968-11-0x0000000000400000-0x0000000000443000-memory.dmp

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