8b8bb430a6d80657603d885a10ab5e311b752effd314e9d83fe46382b8068e43

Analysis

max time kernel
135s
max time network
104s
platform
windows10-2004_x64
resource
win10v2004-20240419-en
resource tags

arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
submitted
05/05/2024, 01:41

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General

Target

8b8bb430a6d80657603d885a10ab5e311b752effd314e9d83fe46382b8068e43.dll
Size

182KB
MD5

4754cbba0894419b933fb1279b4346e3
SHA1

e26d15d4bda0dc042361d527092bffbca8e5f92d
SHA256

8b8bb430a6d80657603d885a10ab5e311b752effd314e9d83fe46382b8068e43
SHA512

7625fc3f74a585043e10f873846dabcd15162d4611bd779e6d84417f1ba46311730c3daa3c1d0bd3dba995eb79da9110e6015cfdeccc14f064724652678edfd1
SSDEEP

3072:7wqDtLba/zq0et+ui1yJkt2lQBV+UdE+rECWp7hK5qyD:0qxbxJiBV+UdvrEFp7hK5qyD

Score

9^/10

upx

Malware Config

Signatures

UPX dump on OEP (original entry point) 3 IoCs

resource	yara_rule
behavioral2/files/0x000f000000023b5f-1.dat	UPX
behavioral2/memory/3260-4-0x0000000010000000-0x0000000010030000-memory.dmp	UPX
behavioral2/memory/3260-8-0x0000000010000000-0x0000000010030000-memory.dmp	UPX

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral2/files/0x000f000000023b5f-1.dat	acprotect

Loads dropped DLL 1 IoCs

pid	Process
3260	rundll32.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x000f000000023b5f-1.dat	upx
behavioral2/memory/3260-4-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral2/memory/3260-8-0x0000000010000000-0x0000000010030000-memory.dmp	upx

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File created	C:\Program Files\Common Files\System\symsrv.dll	rundll32.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4824	3260	WerFault.exe	83

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3260	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1916 wrote to memory of 3260	1916	rundll32.exe	83
PID 1916 wrote to memory of 3260	1916	rundll32.exe	83
PID 1916 wrote to memory of 3260	1916	rundll32.exe	83

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\8b8bb430a6d80657603d885a10ab5e311b752effd314e9d83fe46382b8068e43.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1916
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\8b8bb430a6d80657603d885a10ab5e311b752effd314e9d83fe46382b8068e43.dll,#1
  2⤵
  - Loads dropped DLL
  - Drops file in Program Files directory
  - Suspicious use of AdjustPrivilegeToken
  PID:3260
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 3260 -s 724
    3⤵
    - Program crash
    PID:4824

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 184 -p 3260 -ip 3260
1⤵
PID:2176

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

C:\Program Files\Common Files\System\symsrv.dll

Filesize
67KB

MD5
7574cf2c64f35161ab1292e2f532aabf

SHA1
14ba3fa927a06224dfe587014299e834def4644f

SHA256
de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085

SHA512
4db19f2d8d5bc1c7bbb812d3fa9c43b80fa22140b346d2760f090b73aed8a5177edb4bddc647a6ebd5a2db8565be5a1a36a602b0d759e38540d9a584ba5896ab

Download Submit
memory/3260-4-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/3260-8-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/3260-6-0x0000000074B00000-0x0000000074B1C000-memory.dmp

Filesize
112KB

Download