7b1c275099d11fa4e914ab0dc3faedbaf15713fcb7d79c7d99710ca581d52be6

Analysis

max time kernel
95s
max time network
138s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
31-12-2024 05:46

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

JaffaCakes118_0748ba4e3da132fc06603b30014ad2f0.dll
Size

129KB
MD5

0748ba4e3da132fc06603b30014ad2f0
SHA1

57606117b0927f02644789dffe86ce872662ce00
SHA256

7b1c275099d11fa4e914ab0dc3faedbaf15713fcb7d79c7d99710ca581d52be6
SHA512

967e68328c5dc36c79452e5b587e8fb82619b1652eb445c4290d7bda76f79aebbd7a2dfd926fd27961c5d80b29e60414f61ee37d2a0e3a1d6a3bf9c47726f195
SSDEEP

3072:t/aWRGXhRqj+EFQ3KyE/bUvoijOQUuTW+K9Eu3P:t/aWAKPQmbUwQUC9K9EG

Score

7^/10

discovery upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
4728	rundll32Srv.exe

Drops file in System32 directory 1 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\rundll32Srv.exe	rundll32.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x000b000000023bc3-3.dat	upx
behavioral2/memory/4728-4-0x0000000000400000-0x0000000000433000-memory.dmp	upx
behavioral2/memory/4728-6-0x0000000000400000-0x0000000000433000-memory.dmp	upx

Program crash 2 IoCs

pid	pid_target	Process	procid_target
1616	1608	WerFault.exe	82
2768	4728	WerFault.exe	83

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	rundll32Srv.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4744 wrote to memory of 1608	4744	rundll32.exe	82
PID 4744 wrote to memory of 1608	4744	rundll32.exe	82
PID 4744 wrote to memory of 1608	4744	rundll32.exe	82
PID 1608 wrote to memory of 4728	1608	rundll32.exe	83
PID 1608 wrote to memory of 4728	1608	rundll32.exe	83
PID 1608 wrote to memory of 4728	1608	rundll32.exe	83

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_0748ba4e3da132fc06603b30014ad2f0.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4744
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_0748ba4e3da132fc06603b30014ad2f0.dll,#1
  2⤵
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1608
- - C:\Windows\SysWOW64\rundll32Srv.exe
    C:\Windows\SysWOW64\rundll32Srv.exe
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:4728
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4728 -s 280
      4⤵
      Program crash
      PID:2768
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 1608 -s 608
    3⤵
    - Program crash
    PID:1616

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 4728 -ip 4728
1⤵
PID:3504

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 1608 -ip 1608
1⤵
PID:1452

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

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Windows\SysWOW64\rundll32Srv.exe

Filesize
74KB

MD5
f418a223805611eb0c0c9892746a18c6

SHA1
ea101b15bc9cc5540681a82ee3f25e02d1e32a44

SHA256
d8899ca79b45c5d840e8454791778cffbef7e7184987351bdfca82077bf75378

SHA512
d579b86647d4bd612fffe16082fb6b0639f7c6414639558eefcc37ff60815ea067204320b35257922479a459d44dbe34a6ffff9facaec4d9d9e9d677bedf6498

Download Submit
memory/1608-1-0x0000000010000000-0x0000000010025000-memory.dmp

Filesize
148KB

Download
memory/1608-5-0x0000000010000000-0x0000000010025000-memory.dmp

Filesize
148KB

Download
memory/4728-4-0x0000000000400000-0x0000000000433000-memory.dmp

Filesize
204KB

Download
memory/4728-6-0x0000000000400000-0x0000000000433000-memory.dmp

Filesize
204KB

Download