5357cada9b5bd0c4787ecfd84b6af9b6204d0cb9db93601f6244726e6dee4afd

Analysis

max time kernel
104s
max time network
141s
platform
windows10-2004_x64
resource
win10v2004-20250314-en
resource tags

arch:x64arch:x86image:win10v2004-20250314-enlocale:en-usos:windows10-2004-x64system
submitted
22/03/2025, 12:16

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General

Target

JaffaCakes118_861b36068788838eb29dfbacc3585834.dll
Size

280KB
MD5

861b36068788838eb29dfbacc3585834
SHA1

5bdd8ce1d545a9e8fe4c857fcc540b7c596d5aac
SHA256

5357cada9b5bd0c4787ecfd84b6af9b6204d0cb9db93601f6244726e6dee4afd
SHA512

03e0a42ee7f40a7ee93a714fc6b191481b5ebf58bf28782847a2daf18a9c4d034bf338d811930a324302cde7d4d8d7a8c064b0bfcb05eeac9b4534879c5d1a92
SSDEEP

3072:bdcQ2ZNMSQvbajUTUItjT68+xQ2YBTsUZa3/YHV/j+3UgE8GFPj5IFUNDHSZ9crj:bATSOjUQK9BTso+K+EH8264MK8I

Score

7^/10

discovery upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
5256	rundll32mgr.exe

Drops file in System32 directory 1 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\rundll32mgr.exe	rundll32.exe

UPX packed file 3 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/files/0x00050000000227cb-3.dat	upx
behavioral2/memory/5256-5-0x0000000000400000-0x0000000000456000-memory.dmp	upx
behavioral2/memory/5256-7-0x0000000000400000-0x0000000000456000-memory.dmp	upx

Program crash 1 IoCs

pid	pid_target	Process	procid_target
5236	5256	WerFault.exe	85

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	rundll32mgr.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 5060 wrote to memory of 632	5060	rundll32.exe	84
PID 5060 wrote to memory of 632	5060	rundll32.exe	84
PID 5060 wrote to memory of 632	5060	rundll32.exe	84
PID 632 wrote to memory of 5256	632	rundll32.exe	85
PID 632 wrote to memory of 5256	632	rundll32.exe	85
PID 632 wrote to memory of 5256	632	rundll32.exe	85

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_861b36068788838eb29dfbacc3585834.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:5060
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_861b36068788838eb29dfbacc3585834.dll,#1
  2⤵
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:632
- - C:\Windows\SysWOW64\rundll32mgr.exe
    C:\Windows\SysWOW64\rundll32mgr.exe
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:5256
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 5256 -s 264
      4⤵
      Program crash
      PID:5236

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 5256 -ip 5256
1⤵
PID:216

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

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:\Windows\SysWOW64\rundll32mgr.exe

Filesize
125KB

MD5
12d840fc0b79a745c013e73c4c470467

SHA1
f47b3c28974d6199e596c365f5e7161656480100

SHA256
7ee9098ea2bc30eaea20eceb5e8cda620772c4ba2d7d6945e34ea93fb6054ccb

SHA512
de5f3cb695f1a10d897968668ea403721e09f9c66db796d932b8152edb1681dbac777efb63a2cff9d81380d09452f90470a8b77363a99f21421b9ff61fcb930a

Download Submit
memory/632-0-0x0000000010000000-0x0000000010048000-memory.dmp

Filesize
288KB

Download
memory/5256-6-0x0000000000490000-0x0000000000491000-memory.dmp

Filesize
4KB

Download
memory/5256-5-0x0000000000400000-0x0000000000456000-memory.dmp

Filesize
344KB

Download
memory/5256-7-0x0000000000400000-0x0000000000456000-memory.dmp

Filesize
344KB

Download