4eb89b3abf65f930af96769b3d2c3195b5f8da7eaea2d5826e9f1da50e7c1e50

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
21-08-2024 03:42

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General

Target

b1faec43f304a1d0a48e88bd233e1af1_JaffaCakes118.dll
Size

32KB
MD5

b1faec43f304a1d0a48e88bd233e1af1
SHA1

6a834f3dbbe051066e74379aed98de86b62e8f25
SHA256

4eb89b3abf65f930af96769b3d2c3195b5f8da7eaea2d5826e9f1da50e7c1e50
SHA512

44c97d8724512b3986597efd7cdb71aa616922db5df3cd8d2264332f00ef0a8f1e10ec2609ac5b46ad5ed078ffa2e74ffe9d9b6cd48fe6b2fda615f1d893b8b1
SSDEEP

384:RmTPScPQPfRmL7k3F+e/eKRzr+Ujd9VKf6fX1qwnwy/CBfuA:RmpMoL6eKRzr+IHV31qny6BfuA

Score

8^/10

discovery persistence privilege_escalation

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

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2718105630-359604950-2820636825-1000\Control Panel\International\Geo\Nation	cmd.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 3 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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	regedit.exe

Modifies registry class 2 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\regfile\shell\open\command\ = "regedit.exe /s \"%1\""	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2718105630-359604950-2820636825-1000_Classes\Local Settings	cmd.exe

Runs .reg file with regedit 1 IoCs

pid	Process
944	regedit.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
3656	rundll32.exe
3656	rundll32.exe
3656	rundll32.exe
3656	rundll32.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 4252 wrote to memory of 3656	4252	rundll32.exe	84
PID 4252 wrote to memory of 3656	4252	rundll32.exe	84
PID 4252 wrote to memory of 3656	4252	rundll32.exe	84
PID 3656 wrote to memory of 5020	3656	rundll32.exe	85
PID 3656 wrote to memory of 5020	3656	rundll32.exe	85
PID 3656 wrote to memory of 5020	3656	rundll32.exe	85
PID 5020 wrote to memory of 944	5020	cmd.exe	88
PID 5020 wrote to memory of 944	5020	cmd.exe	88
PID 5020 wrote to memory of 944	5020	cmd.exe	88

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\b1faec43f304a1d0a48e88bd233e1af1_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4252
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\b1faec43f304a1d0a48e88bd233e1af1_JaffaCakes118.dll,#1
  2⤵
  - System Location Discovery: System Language Discovery
  - Modifies registry class
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:3656
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c C:\Users\Admin\AppData\Local\Temp\a.reg
    3⤵
    - Checks computer location settings
    - System Location Discovery: System Language Discovery
    - Modifies registry class
    - Suspicious use of WriteProcessMemory
    PID:5020
  - - C:\Windows\SysWOW64\regedit.exe
      "regedit.exe" /s "C:\Users\Admin\AppData\Local\Temp\a.reg"
      4⤵
      System Location Discovery: System Language Discovery
      Runs .reg file with regedit
      PID:944

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Event Triggered Execution

T1546

AppInit DLLs

T1546.010

Privilege Escalation

Event Triggered Execution

T1546

AppInit DLLs

T1546.010

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\a.reg

Filesize
179B

MD5
f3dbe232e05c7524d83f53e5b1d74903

SHA1
73f9f4252efc4ccb54aa7a000ababf88fcd5934c

SHA256
24228c7cc91bb36420590e9a46a668d5a336578c64c3db507559c5c24ab69782

SHA512
873a02dcf63f1fad1c1b508d8f330fde5ac5fc36c57b2e8ab18b632facd1f6f9c93335e7564cfdb12dc05c6b1317666faebb6a440bd0d968892a31a7d48764e9

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