034a593fd7770ff84e75ce03bc5ae1c423c01ee288ef81e6fd59c3253b11275d

Analysis

max time kernel
133s
max time network
130s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
13/08/2024, 16:07

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General

Target

93cb7fcd75aed09039e24dad29a923cf_JaffaCakes118.dll
Size

523KB
MD5

93cb7fcd75aed09039e24dad29a923cf
SHA1

59804d6e27d3add1aa73b7120f3efd01c3797862
SHA256

034a593fd7770ff84e75ce03bc5ae1c423c01ee288ef81e6fd59c3253b11275d
SHA512

76ce10ef0083472b3107427d20e9723f66f2ab9d0f5cc5bb5978bd91a6b9159d721cf8579cc45e0bd2726bcd16384731aa650dea1abca6e401a407a9e8f31677
SSDEEP

384:NyVlNjtU2eMxs/eoZ3wkv/t66gf5tPUg3Tc/kTHVFAquD/47yzs3AD5zv1D6k8GV:QVlU/Tw261f5tT4/QVFvnADdv1mkfn

Score

8^/10

adware discovery persistence privilege_escalation stealer

Malware Config

Signatures

Event Triggered Execution: AppInit DLLs 1 TTPs
Adversaries may establish persistence and/or elevate privileges by executing malicious content triggered by AppInit DLLs loaded into processes.
persistence privilege_escalation

AppInit DLLs
T1546.010

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
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{6C69034A-F45F-D34D-A33A-C33C4D324FC6}\ = "arjrdler.dll"	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{6C69034A-F45F-D34D-A33A-C33C4D324FC6}	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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe

Modifies registry class 6 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{6C69034A-F45F-D34D-A33A-C33C4D324FC6}\InprocServer32\ = "C:\\Windows\\SysWow64\\arjrdler.dll"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{6C69034A-F45F-D34D-A33A-C33C4D324FC6}\InprocServer32\ThreadingModel = "Apartment"	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{6C69034A-F45F-D34D-A33A-C33C4D324FC6}\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\{6C69034A-F45F-D34D-A33A-C33C4D324FC6}	rundll32.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2524	rundll32.exe
2524	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2524	rundll32.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4720 wrote to memory of 2524	4720	rundll32.exe	84
PID 4720 wrote to memory of 2524	4720	rundll32.exe	84
PID 4720 wrote to memory of 2524	4720	rundll32.exe	84
PID 2524 wrote to memory of 4712	2524	rundll32.exe	85
PID 2524 wrote to memory of 4712	2524	rundll32.exe	85
PID 2524 wrote to memory of 4712	2524	rundll32.exe	85

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\93cb7fcd75aed09039e24dad29a923cf_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4720
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\93cb7fcd75aed09039e24dad29a923cf_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:2524
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\Temp\~DFD240635203.bat
    3⤵
    - System Location Discovery: System Language Discovery
    PID:4712

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Browser Extensions

T1176

Event Triggered Execution

T1546

AppInit DLLs

T1546.010

Privilege Escalation

Event Triggered Execution

T1546

AppInit DLLs

T1546.010

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\~DFD240635203.bat

Filesize
121B

MD5
09517fc62284f33e877a276463580bd1

SHA1
0b14fe1db4493818f9de0bf2a56ee5370b8d479a

SHA256
6cc6bbb1f3f754b6894d84130f5f2d86569ac3a603e1632d3cefa028f22b6238

SHA512
1b924dd216d0f38199cc6df215e65ff260aa48fa37aa620dabcbc616f434643bd1f2e617d66b14bd52900214148741565128ba9589782ba582fd7308369f4a4d

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