3a19b0e1ab0bd343a0c724a9fcc959a866a54218faacce27a408f7ccaf70e47d

Analysis

max time kernel
83s
max time network
128s
platform
windows10-2004_x64
resource
win10v2004-20250314-en
resource tags

arch:x64arch:x86image:win10v2004-20250314-enlocale:en-usos:windows10-2004-x64system
submitted
23/03/2025, 16:02

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General

Target

JaffaCakes118_877bddde6e34d4e366264b411cd8d1ec.dll
Size

196KB
MD5

877bddde6e34d4e366264b411cd8d1ec
SHA1

1ce8bc691f406ef7c12acb3f8fa04c8210793d70
SHA256

3a19b0e1ab0bd343a0c724a9fcc959a866a54218faacce27a408f7ccaf70e47d
SHA512

2881a2274360c70d81463480ca6c617ecac75938d7c225b479e5767721c5805f7037bed0c1f264cfc8049619ccec397b24d8a08b875eda88f59f998247c3dcda
SSDEEP

3072:DvXmimD0k0QRW1PhI1sItKOgGdX3DU68iBljiMz/mPTUS1mThIOwZk85:D+fD/0QSzItKOgGFYSrKbUlD25

Score

7^/10

discovery upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
3568	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/0x000b000000024052-3.dat	upx
behavioral2/memory/3568-4-0x0000000000400000-0x000000000045B000-memory.dmp	upx
behavioral2/memory/3568-7-0x0000000000400000-0x000000000045B000-memory.dmp	upx

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2996	3568	WerFault.exe	86

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 3228 wrote to memory of 3716	3228	rundll32.exe	85
PID 3228 wrote to memory of 3716	3228	rundll32.exe	85
PID 3228 wrote to memory of 3716	3228	rundll32.exe	85
PID 3716 wrote to memory of 3568	3716	rundll32.exe	86
PID 3716 wrote to memory of 3568	3716	rundll32.exe	86
PID 3716 wrote to memory of 3568	3716	rundll32.exe	86

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_877bddde6e34d4e366264b411cd8d1ec.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:3228
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_877bddde6e34d4e366264b411cd8d1ec.dll,#1
  2⤵
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3716
- - C:\Windows\SysWOW64\rundll32mgr.exe
    C:\Windows\SysWOW64\rundll32mgr.exe
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:3568
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 3568 -s 264
      4⤵
      Program crash
      PID:2996

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3568 -ip 3568
1⤵
PID:4648

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
105KB

MD5
1713dcea0892955ae4ad238bf4b9a34d

SHA1
172c10720153e717402654f97ad56516f43705bf

SHA256
e4cbc03a8bea10728e756b7187435b3675af2d45ace12e6b6641e44b25d54b23

SHA512
e0a0a1ec9e9380bcc1692016dcadb6b794ef13e3a49b9709799c8b281401cd0faa0b63b0aa0fa750820cdec674f7c6e02e259e66cf843975fcbd49e9c1be021c

Download Submit
memory/3568-4-0x0000000000400000-0x000000000045B000-memory.dmp

Filesize
364KB

Download
memory/3568-6-0x00000000004E0000-0x00000000004E1000-memory.dmp

Filesize
4KB

Download
memory/3568-7-0x0000000000400000-0x000000000045B000-memory.dmp

Filesize
364KB

Download
memory/3716-0-0x0000000010000000-0x0000000010031000-memory.dmp

Filesize
196KB

Download