93952bf02709fb19f61892f6fb9eca5b59f9773a09d08010c50f96158367cb5f

Analysis

max time kernel
150s
max time network
93s
platform
windows10-2004_x64
resource
win10v2004-20240709-en
resource tags

arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
submitted
16-07-2024 09:37

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General

Target

4dbec925bd0e0e2d73b6c4536e35f5a2_JaffaCakes118.exe
Size

123KB
MD5

4dbec925bd0e0e2d73b6c4536e35f5a2
SHA1

e290b071d56b1e1b3ba8521cc54549a0ea8fee6a
SHA256

93952bf02709fb19f61892f6fb9eca5b59f9773a09d08010c50f96158367cb5f
SHA512

d32c18c300e378953668b19591d36d178d772802480b7a0b0c5f805588ac727b0655a3011ca9db9e580f74d04c31aacc898e88435a354f094eb94793bbd9d752
SSDEEP

3072:VeSyGQ8sEPwfmzx9hkubycXsqa62Ux+oJ:VeSyGQSPkO9Smyc8qa62UP

Score

8^/10

persistence

Malware Config

Signatures

Server Software Component: Terminal Services DLL 1 TTPs 1 IoCs

persistence

Terminal Services DLL

T1505.005

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\FastUserSwitchingCompatibility\Parameters\ServiceDll = "C:\\Windows\\system32\\heixueex.dll"	4dbec925bd0e0e2d73b6c4536e35f5a2_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
2320	rundll32.exe

Loads dropped DLL 2 IoCs

pid	Process
920	svchost.exe
2320	rundll32.exe

Drops file in System32 directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\heixueex.dll	4dbec925bd0e0e2d73b6c4536e35f5a2_JaffaCakes118.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
3004	920	WerFault.exe	83

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	920	svchost.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 920 wrote to memory of 2320	920	svchost.exe	85
PID 920 wrote to memory of 2320	920	svchost.exe	85
PID 920 wrote to memory of 2320	920	svchost.exe	85

C:\Users\Admin\AppData\Local\Temp\4dbec925bd0e0e2d73b6c4536e35f5a2_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\4dbec925bd0e0e2d73b6c4536e35f5a2_JaffaCakes118.exe"
1⤵
- Server Software Component: Terminal Services DLL
- Drops file in System32 directory
PID:216

C:\Windows\SysWOW64\svchost.exe
C:\Windows\SysWOW64\svchost.exe -k netsvcs -s FastUserSwitchingCompatibility
1⤵
- Loads dropped DLL
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:920
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe c:\windows\system32\heixueex.dll, Startup FastUserSwitchingCompatibility
  2⤵
  - Deletes itself
  - Loads dropped DLL
  PID:2320
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 920 -s 680
  2⤵
  - Program crash
  PID:3004

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 920 -ip 920
1⤵
PID:2280

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Server Software Component

T1505

Terminal Services DLL

T1505.005

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Windows\SysWOW64\heixueex.dll

Filesize
109KB

MD5
8c5d041c8f20fe3e0a931bb6902ab290

SHA1
eefa98121ed4f66c8ba5a18ff8057517e648a1cf

SHA256
c83a775e0b7459e817555099edc91e1919b894030f48c0e4e15d70539fa37cfb

SHA512
2025bd0dec118924bbb60a6db31afbaefad4118cb82ea6b6b4c2f7ba9fe63b5a6ffeb597d6b95d81e5a729ac2d922cb9e6f8298b2e2d28f8e13934083e7450b4

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