7f2a814bec6ea582d988824fa4eac80fd42ded6c13875a05e77c4799b861ba2d

Analysis

max time kernel
148s
max time network
150s
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, 07:35

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General

Target

JaffaCakes118_638c8d56be149f65514cbc3aa88706f0.dll
Size

256KB
MD5

638c8d56be149f65514cbc3aa88706f0
SHA1

1402274978db717d48dce7c57f1b2d1c54f058b4
SHA256

7f2a814bec6ea582d988824fa4eac80fd42ded6c13875a05e77c4799b861ba2d
SHA512

1eabc234f6907fa8db9fb335c5b478a4ffb96fb73c600c0a4243cadff319acd26d1df9267b31bb670ccc8493d11c548e2321cd357cf8a7c930c0fbc1546af06d
SSDEEP

3072:UdcQ2ZNMSQvbajUTUItjT68+xS3l7AyAADvgr1XvPw1ZtyIV+KPLxZ3N363g3Vj4:WATSOjUQK93luADIr1AMbKjxBULP

Score

7^/10

discovery upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
736	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/0x000c000000023b2b-3.dat	upx
behavioral2/memory/736-5-0x0000000000400000-0x0000000000456000-memory.dmp	upx
behavioral2/memory/736-7-0x0000000000400000-0x0000000000456000-memory.dmp	upx

Program crash 1 IoCs

pid	pid_target	Process	procid_target
3056	736	WerFault.exe	84

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 3344 wrote to memory of 776	3344	rundll32.exe	83
PID 3344 wrote to memory of 776	3344	rundll32.exe	83
PID 3344 wrote to memory of 776	3344	rundll32.exe	83
PID 776 wrote to memory of 736	776	rundll32.exe	84
PID 776 wrote to memory of 736	776	rundll32.exe	84
PID 776 wrote to memory of 736	776	rundll32.exe	84

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_638c8d56be149f65514cbc3aa88706f0.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:3344
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_638c8d56be149f65514cbc3aa88706f0.dll,#1
  2⤵
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:776
- - C:\Windows\SysWOW64\rundll32mgr.exe
    C:\Windows\SysWOW64\rundll32mgr.exe
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:736
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 736 -s 264
      4⤵
      Program crash
      PID:3056

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 736 -ip 736
1⤵
PID:1112

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/736-6-0x00000000004A0000-0x00000000004A1000-memory.dmp

Filesize
4KB

Download
memory/736-5-0x0000000000400000-0x0000000000456000-memory.dmp

Filesize
344KB

Download
memory/736-7-0x0000000000400000-0x0000000000456000-memory.dmp

Filesize
344KB

Download
memory/776-0-0x0000000010000000-0x0000000010042000-memory.dmp

Filesize
264KB

Download