ccfa420db2fa14761274fbd9dd4889ec9ee3e802b7c1cab25581f19515c61edb

Analysis

max time kernel
149s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
02-01-2025 00:10

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General

Target

JaffaCakes118_617918bf9b1cb133deac8b0562cfee8c.dll
Size

1.1MB
MD5

617918bf9b1cb133deac8b0562cfee8c
SHA1

d56b84161425e3fc133c013e75b40bfaaa617faa
SHA256

ccfa420db2fa14761274fbd9dd4889ec9ee3e802b7c1cab25581f19515c61edb
SHA512

fa7b5299ee6c5d4d38eeacf57861aaf93c9435ec05dbc382e9a77ad8a32b065cf008073ffd29f08f54233e126a785f8fe9728fb48cdee2ce9529a05a5f635cb5
SSDEEP

12288:OtoaAao9raoSGCeCLGCLG1paED0Riy7eEuFNTY1u5Bt17Ixs2t0qf/:MbDo9WoSGCeCLGCLG18+wuFN5TKKw3

Score

7^/10

discovery upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2164	rundll32mgr.exe

Drops file in System32 directory 1 IoCs

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

UPX packed file 2 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x000c000000023b0a-3.dat	upx
behavioral2/memory/2164-5-0x0000000000400000-0x00000000004A6000-memory.dmp	upx

Program crash 1 IoCs

pid	pid_target	Process	procid_target
3012	2164	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	rundll32mgr.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4008 wrote to memory of 2052	4008	rundll32.exe	82
PID 4008 wrote to memory of 2052	4008	rundll32.exe	82
PID 4008 wrote to memory of 2052	4008	rundll32.exe	82
PID 2052 wrote to memory of 2164	2052	rundll32.exe	83
PID 2052 wrote to memory of 2164	2052	rundll32.exe	83
PID 2052 wrote to memory of 2164	2052	rundll32.exe	83

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_617918bf9b1cb133deac8b0562cfee8c.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4008
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_617918bf9b1cb133deac8b0562cfee8c.dll,#1
  2⤵
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2052
- - C:\Windows\SysWOW64\rundll32mgr.exe
    C:\Windows\SysWOW64\rundll32mgr.exe
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:2164
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2164 -s 264
      4⤵
      Program crash
      PID:3012

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2164 -ip 2164
1⤵
PID:4880

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

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Downloads

C:\Windows\SysWOW64\rundll32mgr.exe

Filesize
211KB

MD5
fbbe49d7e5e7462bbfdb27fc27294fa7

SHA1
0443c7c92cb8a4bb9f626dae736cd80aacfc56ff

SHA256
1d548c85594dc4b83ac1c69ac82da842dc68eac75f683aed693929c728c83184

SHA512
41c774722a0d1e91dbb6962bbd76dd2a3bea19a31d0ad239283a4ee60788bd32606092d10b4a4b04bb1cd83fb1f2b5b9da08f013f2150f72e2d0d1d669eb50da

Download Submit
memory/2052-1-0x0000000010000000-0x0000000010127000-memory.dmp

Filesize
1.2MB

Download
memory/2164-5-0x0000000000400000-0x00000000004A6000-memory.dmp

Filesize
664KB

Download
memory/2164-6-0x00000000005F0000-0x00000000005F8000-memory.dmp

Filesize
32KB

Download