b4fe386f96b3d70deb8e7fbd2a8c6f4c066e0a35e05665c7961947bd13da7ced

Analysis

max time kernel
94s
max time network
140s
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 19:24

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General

Target

JaffaCakes118_67a16d6e5e4677ef98e9aa8200f0d5b0.dll
Size

345KB
MD5

67a16d6e5e4677ef98e9aa8200f0d5b0
SHA1

882b5bd366e17219dbb8888eecc3563bcb433df1
SHA256

b4fe386f96b3d70deb8e7fbd2a8c6f4c066e0a35e05665c7961947bd13da7ced
SHA512

10e2661949ff8a55083d983693493917b826947aed3414ef4b2329f5d571473af622af22a97f0e5481cec62e64c780c1e56fef2ddbf5d42bda3f1985b3844748
SSDEEP

6144:4N0yr1sO/wIKS0FKtOT/OrDtgUi0uvQee7Qee/0QeesQeeglQeekQeeDC7MOmsjv:YG6wndYtamDSU1jmsjwio3Qv3lP

Score

7^/10

discovery upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
3152	regsvr32mgr.exe

Drops file in System32 directory 1 IoCs

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

UPX packed file 3 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/files/0x000e000000023a3a-5.dat	upx
behavioral2/memory/3152-4-0x0000000000400000-0x0000000000456000-memory.dmp	upx
behavioral2/memory/3152-8-0x0000000000400000-0x0000000000456000-memory.dmp	upx

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4884	3152	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 4 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{C58F1580-0DF3-401C-93B1-2D9DDA61CF04}\1.0\HELPDIR	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{C58F1580-0DF3-401C-93B1-2D9DDA61CF04}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{C58F1580-0DF3-401C-93B1-2D9DDA61CF04}\1.0	regsvr32.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 812 wrote to memory of 1128	812	regsvr32.exe	84
PID 812 wrote to memory of 1128	812	regsvr32.exe	84
PID 812 wrote to memory of 1128	812	regsvr32.exe	84
PID 1128 wrote to memory of 3152	1128	regsvr32.exe	85
PID 1128 wrote to memory of 3152	1128	regsvr32.exe	85
PID 1128 wrote to memory of 3152	1128	regsvr32.exe	85

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_67a16d6e5e4677ef98e9aa8200f0d5b0.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:812
- C:\Windows\SysWOW64\regsvr32.exe
  /s C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_67a16d6e5e4677ef98e9aa8200f0d5b0.dll
  2⤵
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:1128
- - C:\Windows\SysWOW64\regsvr32mgr.exe
    C:\Windows\SysWOW64\regsvr32mgr.exe
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:3152
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 3152 -s 264
      4⤵
      Program crash
      PID:4884

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3152 -ip 3152
1⤵
PID:1168

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
104KB

MD5
84b7783804fa7506672a409e9899c6be

SHA1
2da8a6e9c04662564e18cdf98f73e224a5662533

SHA256
b26a93c17ac6a412c6c191aa6a1543537f3185fe813c24153c6dec736fbad4ef

SHA512
8a867296b05f45dd79ab64b11b6cc0cc8fad835b2f5ba9b8469981cc9b3e15c91f98b688cbe7addfab7ea2bd55a1d475fc853c004afb24be1b5691f8183c897c

Download Submit
memory/1128-0-0x0000000074880000-0x00000000748D9000-memory.dmp

Filesize
356KB

Download
memory/3152-6-0x0000000000570000-0x0000000000571000-memory.dmp

Filesize
4KB

Download
memory/3152-4-0x0000000000400000-0x0000000000456000-memory.dmp

Filesize
344KB

Download
memory/3152-8-0x0000000000400000-0x0000000000456000-memory.dmp

Filesize
344KB

Download