764d141e24f994631341dd9f9348b94ff1a9ab5ee4a04e84f8f387a867389860

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
04-01-2025 03:56

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General

Target

JaffaCakes118_777a8cd4648f98ee2cf47dd48c8773fb.dll
Size

284KB
MD5

777a8cd4648f98ee2cf47dd48c8773fb
SHA1

31719bc4380c8ca160527e588b814f2e629bd9e1
SHA256

764d141e24f994631341dd9f9348b94ff1a9ab5ee4a04e84f8f387a867389860
SHA512

6adc516fabb1a16c080226de37a7beccf8a0a1bd2d67264eb7b267e025f0b39f1bfb560fbb3ee459dea0b6e5f2ac431ce427ca53337713e417962dd3d9b60de8
SSDEEP

3072:LLAQpz/3KT+IcwFRMQgRnJ5mw/G0jgVxBDCH7OgtBLfkajaAXjBjsPVHDJA6u8k+:vAYb++QzgRnrmIjm347FLfPFsVHDqj4d

Score

7^/10

discovery

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
3992	regsvr32mgr.exe

Drops file in System32 directory 1 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\regsvr32mgr.exe	regsvr32.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4380	3992	WerFault.exe	85

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	regsvr32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	regsvr32mgr.exe

Modifies registry class 9 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{5a900bf8-09f0-4d1d-bb42-47617ee2eedc}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{5a900bf8-09f0-4d1d-bb42-47617ee2eedc}\ = "ConfigFree"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{5a900bf8-09f0-4d1d-bb42-47617ee2eedc}\InProcServer32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Directory\shellex\ContextMenuHandlers\tosAACFShlExt\ = "{5a900bf8-09f0-4d1d-bb42-47617ee2eedc}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\*\shellex\ContextMenuHandlers\tosAACFShlExt	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\*\shellex\ContextMenuHandlers\tosAACFShlExt\ = "{5a900bf8-09f0-4d1d-bb42-47617ee2eedc}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{5a900bf8-09f0-4d1d-bb42-47617ee2eedc}\InProcServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\JaffaCakes118_777a8cd4648f98ee2cf47dd48c8773fb.dll"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{5a900bf8-09f0-4d1d-bb42-47617ee2eedc}\InProcServer32\ThreadingModel = "Apartment"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\directory\shellex\ContextMenuHandlers\tosAACFShlExt	regsvr32.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2908 wrote to memory of 4920	2908	regsvr32.exe	84
PID 2908 wrote to memory of 4920	2908	regsvr32.exe	84
PID 2908 wrote to memory of 4920	2908	regsvr32.exe	84
PID 4920 wrote to memory of 3992	4920	regsvr32.exe	85
PID 4920 wrote to memory of 3992	4920	regsvr32.exe	85
PID 4920 wrote to memory of 3992	4920	regsvr32.exe	85

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_777a8cd4648f98ee2cf47dd48c8773fb.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:2908
- C:\Windows\SysWOW64\regsvr32.exe
  /s C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_777a8cd4648f98ee2cf47dd48c8773fb.dll
  2⤵
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:4920
- - C:\Windows\SysWOW64\regsvr32mgr.exe
    C:\Windows\SysWOW64\regsvr32mgr.exe
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:3992
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 3992 -s 384
      4⤵
      Program crash
      PID:4380

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 208 -p 3992 -ip 3992
1⤵
PID:1732

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\regsvr32mgr.exe

Filesize
192KB

MD5
72864b90643b2ff7a3e4c06b03ad2ce7

SHA1
52f60736728362514dec7880f67009408bf744da

SHA256
c0dc483d5d52f102a46125ba7b79757cf535aaf6075ff1bf0b255243d0b88c43

SHA512
b6f2abb30dedc588601324a203f348f453443a28de2a82b16ae175621471126680bf239e502e5c4f848955a6031e211976a3aa24eaa9e1e56b06c30916a23bf2

Download Submit
memory/4920-0-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download