a18f9e10a0d81fd5b896624b7eec420b2c84fec8b0f46b7c2a87abef28c0633a

Analysis

max time kernel
150s
max time network
126s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
11-08-2024 17:00

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General

Target

8b3359a31030918636ace57230b7e36d_JaffaCakes118.dll
Size

94KB
MD5

8b3359a31030918636ace57230b7e36d
SHA1

445e213de7849b0a9aa92889acbd9fb201cadef8
SHA256

a18f9e10a0d81fd5b896624b7eec420b2c84fec8b0f46b7c2a87abef28c0633a
SHA512

49ef3098b2ae7b3899bc78682aadb49e6d4c73ccdbd21ff7c1cbe16e2a4a44d73fdb50b6f1622fbca40d557c16f3cd2a89b4a8301498d6352f1897920189500a
SSDEEP

384:I8PyZNjtU2mEcXlhjjz93NNiWNdPBIMiL3DJWd3jZhv9ZfIIlzMsq5k8/s45:fyZIXbnNiYdPBgfJejZZ9Zf1q5k2s

Score

6^/10

adware discovery stealer

Malware Config

Signatures

Installs/modifies Browser Helper Object 2 TTPs 2 IoCs

BHOs are DLL modules which act as plugins for Internet Explorer.

stealer adware

Modify Registry

T1112

Browser Extensions

T1176

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{4D098345-6785-1098-5413-678067AE03D4}	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{4D098345-6785-1098-5413-678067AE03D4}\ = "tysqakol.dll"	rundll32.exe

Drops file in System32 directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\verclsid.exe	rundll32.exe

System Location Discovery: System Language Discovery 1 TTPs 2 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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Modifies registry class 6 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{4D098345-6785-1098-5413-678067AE03D4}\InprocServer32\ThreadingModel = "Apartment"	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{4D098345-6785-1098-5413-678067AE03D4}\InprocServer32	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{4D098345-6785-1098-5413-678067AE03D4}	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{4D098345-6785-1098-5413-678067AE03D4}\InprocServer32\ = "C:\\Windows\\SysWow64\\tysqakol.dll"	rundll32.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
936	rundll32.exe
936	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	936	rundll32.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2896 wrote to memory of 936	2896	rundll32.exe	84
PID 2896 wrote to memory of 936	2896	rundll32.exe	84
PID 2896 wrote to memory of 936	2896	rundll32.exe	84
PID 936 wrote to memory of 1576	936	rundll32.exe	85
PID 936 wrote to memory of 1576	936	rundll32.exe	85
PID 936 wrote to memory of 1576	936	rundll32.exe	85

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\8b3359a31030918636ace57230b7e36d_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2896
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\8b3359a31030918636ace57230b7e36d_JaffaCakes118.dll,#1
  2⤵
  - Installs/modifies Browser Helper Object
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  - Modifies registry class
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:936
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\Temp\~DFD240607484.bat
    3⤵
    - System Location Discovery: System Language Discovery
    PID:1576

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Browser Extensions

T1176

Privilege Escalation

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

C:\Users\Admin\AppData\Local\Temp\~DFD240607484.bat

Filesize
121B

MD5
09517fc62284f33e877a276463580bd1

SHA1
0b14fe1db4493818f9de0bf2a56ee5370b8d479a

SHA256
6cc6bbb1f3f754b6894d84130f5f2d86569ac3a603e1632d3cefa028f22b6238

SHA512
1b924dd216d0f38199cc6df215e65ff260aa48fa37aa620dabcbc616f434643bd1f2e617d66b14bd52900214148741565128ba9589782ba582fd7308369f4a4d

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