7c71e58387b0570caa491503d6fbf2dad6b10aa1573ce65ff04854c9c36d3c17

Analysis

max time kernel
93s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
24-01-2025 08:48

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General

Target

JaffaCakes118_1fcb401b799491305226a3076e3b2d00.dll
Size

1.3MB
MD5

1fcb401b799491305226a3076e3b2d00
SHA1

785fc2423cd8baba0250012493fe8d2a892c3015
SHA256

7c71e58387b0570caa491503d6fbf2dad6b10aa1573ce65ff04854c9c36d3c17
SHA512

0597777d0eee4321967144ab90200f0f827ea79a9fabd0f695e113d67dff99e1187944f53d12620ece37361d2f699d961804330131f9196ed8d7249e7c8c5f73
SSDEEP

12288:DSfXvPnSkeJr2F21G0ukd/W8YmU/fI60KbKIkWTVurjUc0u99ARk1FM83pm0OyP+:OPvP8T2onlOYHc4v2aXFI4NCV

Score

7^/10

discovery upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
3724	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/0x0009000000023c64-3.dat	upx
behavioral2/memory/3724-4-0x0000000000400000-0x0000000000456000-memory.dmp	upx
behavioral2/memory/3724-8-0x0000000000400000-0x0000000000456000-memory.dmp	upx

Program crash 2 IoCs

pid	pid_target	Process	procid_target
4320	5068	WerFault.exe	82
1860	3724	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 1536 wrote to memory of 5068	1536	rundll32.exe	82
PID 1536 wrote to memory of 5068	1536	rundll32.exe	82
PID 1536 wrote to memory of 5068	1536	rundll32.exe	82
PID 5068 wrote to memory of 3724	5068	rundll32.exe	83
PID 5068 wrote to memory of 3724	5068	rundll32.exe	83
PID 5068 wrote to memory of 3724	5068	rundll32.exe	83

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_1fcb401b799491305226a3076e3b2d00.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1536
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_1fcb401b799491305226a3076e3b2d00.dll,#1
  2⤵
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:5068
- - C:\Windows\SysWOW64\rundll32mgr.exe
    C:\Windows\SysWOW64\rundll32mgr.exe
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:3724
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 3724 -s 264
      4⤵
      Program crash
      PID:1860
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 5068 -s 612
    3⤵
    - Program crash
    PID:4320

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 3724 -ip 3724
1⤵
PID:224

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 5068 -ip 5068
1⤵
PID:3848

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
125KB

MD5
12d840fc0b79a745c013e73c4c470467

SHA1
f47b3c28974d6199e596c365f5e7161656480100

SHA256
7ee9098ea2bc30eaea20eceb5e8cda620772c4ba2d7d6945e34ea93fb6054ccb

SHA512
de5f3cb695f1a10d897968668ea403721e09f9c66db796d932b8152edb1681dbac777efb63a2cff9d81380d09452f90470a8b77363a99f21421b9ff61fcb930a

Download Submit
memory/3724-4-0x0000000000400000-0x0000000000456000-memory.dmp

Filesize
344KB

Download
memory/3724-6-0x00000000004A0000-0x00000000004A1000-memory.dmp

Filesize
4KB

Download
memory/3724-8-0x0000000000400000-0x0000000000456000-memory.dmp

Filesize
344KB

Download
memory/5068-1-0x0000000010000000-0x0000000010157000-memory.dmp

Filesize
1.3MB

Download
memory/5068-7-0x0000000010000000-0x0000000010157000-memory.dmp

Filesize
1.3MB

Download