aeac8e30227f84ddba7add2535f8821e13a65fb8b435aed2d1e1ebc849836384

Analysis

max time kernel
94s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
01-01-2025 08:33

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General

Target

JaffaCakes118_4e4498c8ef54e72c8cb53c52235fbd90.dll
Size

448KB
MD5

4e4498c8ef54e72c8cb53c52235fbd90
SHA1

9cfa43637f14a87de59832a9ea91485dabc163d8
SHA256

aeac8e30227f84ddba7add2535f8821e13a65fb8b435aed2d1e1ebc849836384
SHA512

91cfff553ecb03b0026e9979542bbc1659decdaf0c918a97fd743018eece53c7fe96cd7e05e37a1695937b3a5a1e7b0ad105bf52129d2afdb42b651d9543a963
SSDEEP

6144:WcV9z83OtqxnEYmt3NEnvfF+Tbmbw6An8FMciFMNrb3YgxxpbCAOxO2ElvlE+miO:Woz83OtIEzW+/m/AyF7bCrO/Ev1j0WSC

Score

7^/10

discovery upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
4492	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/0x000a000000023c12-3.dat	upx
behavioral2/memory/4492-4-0x0000000000400000-0x0000000000456000-memory.dmp	upx
behavioral2/memory/4492-8-0x0000000000400000-0x0000000000456000-memory.dmp	upx

Program crash 2 IoCs

pid	pid_target	Process	procid_target
3992	4492	WerFault.exe	83
2392	2512	WerFault.exe	82

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 968 wrote to memory of 2512	968	rundll32.exe	82
PID 968 wrote to memory of 2512	968	rundll32.exe	82
PID 968 wrote to memory of 2512	968	rundll32.exe	82
PID 2512 wrote to memory of 4492	2512	rundll32.exe	83
PID 2512 wrote to memory of 4492	2512	rundll32.exe	83
PID 2512 wrote to memory of 4492	2512	rundll32.exe	83

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4e4498c8ef54e72c8cb53c52235fbd90.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:968
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4e4498c8ef54e72c8cb53c52235fbd90.dll,#1
  2⤵
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2512
- - C:\Windows\SysWOW64\rundll32mgr.exe
    C:\Windows\SysWOW64\rundll32mgr.exe
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:4492
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4492 -s 264
      4⤵
      Program crash
      PID:3992
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2512 -s 608
    3⤵
    - Program crash
    PID:2392

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2512 -ip 2512
1⤵
PID:2432

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 468 -p 4492 -ip 4492
1⤵
PID:1588

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
105KB

MD5
27761550031391c56a3a59d3cb7229a5

SHA1
643e456a5fb02a820e79e33fc66e8496f15e5955

SHA256
b6b449ecd550692a3d8d5424e00885155e898d5cbbde98543a5b7b877073daab

SHA512
2aa9607f71e4cb99ab4ccabe33a5f192117b733306cd8d1f4f3054077572e522bc71e1eae679877b5554d0bc3c1281fd5bcf822a2da5da291e6630f65470d0d6

Download Submit
memory/2512-1-0x000000007C340000-0x000000007C3B1000-memory.dmp

Filesize
452KB

Download
memory/2512-9-0x000000007C340000-0x000000007C3B1000-memory.dmp

Filesize
452KB

Download
memory/4492-4-0x0000000000400000-0x0000000000456000-memory.dmp

Filesize
344KB

Download
memory/4492-6-0x0000000002060000-0x0000000002061000-memory.dmp

Filesize
4KB

Download
memory/4492-8-0x0000000000400000-0x0000000000456000-memory.dmp

Filesize
344KB

Download