fb3f435fb5cff275d19ff73d90891fcc0d87acea7ccdefa95dd04bfdec2dbda7

Analysis

max time kernel
139s
max time network
126s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
20/05/2024, 06:45

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General

Target

fb3f435fb5cff275d19ff73d90891fcc0d87acea7ccdefa95dd04bfdec2dbda7.dll
Size

223KB
MD5

f7dd5413b85dd7aad09797e28d0d13bb
SHA1

22c8e0fe6b17bebec0b7be46645697c4b5dfa5ec
SHA256

fb3f435fb5cff275d19ff73d90891fcc0d87acea7ccdefa95dd04bfdec2dbda7
SHA512

0e7873ee1de4cd4dc3f910342881280be4f8d34d9690b400e4af12cbd8148a9474a758018319f1598ac15229a8c0fd090721e46ff7967f34ed564a41bd9f4937
SSDEEP

3072:6huf5AUWGIcv3JvK2agufuYZdlGZxIOtY81fs2lQBV+UdE+rECWp7hKZN:ZBAUWGxVagufutLIBV+UdvrEFp7hKn

Score

8^/10

persistence upx

Malware Config

Signatures

Modifies AppInit DLL entries 2 TTPs
persistence

Registry Run Keys / Startup Folder
T1547.001

Modify Registry
T1112

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral2/files/0x0006000000023278-1.dat	acprotect

Loads dropped DLL 4 IoCs

pid	Process
1540	rundll32.exe
1540	rundll32.exe
2640	WerFault.exe
1652	WerFault.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x0006000000023278-1.dat	upx
behavioral2/memory/1540-6-0x00000000014C0000-0x00000000014F0000-memory.dmp	upx
behavioral2/memory/1540-12-0x00000000014C0000-0x00000000014F0000-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
1652	1540	WerFault.exe	83

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1540	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1492 wrote to memory of 1540	1492	rundll32.exe	83
PID 1492 wrote to memory of 1540	1492	rundll32.exe	83
PID 1492 wrote to memory of 1540	1492	rundll32.exe	83

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\fb3f435fb5cff275d19ff73d90891fcc0d87acea7ccdefa95dd04bfdec2dbda7.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1492
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\fb3f435fb5cff275d19ff73d90891fcc0d87acea7ccdefa95dd04bfdec2dbda7.dll,#1
  2⤵
  - Loads dropped DLL
  - Drops file in Program Files directory
  - Suspicious use of AdjustPrivilegeToken
  PID:1540
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 1540 -s 712
    3⤵
    - Loads dropped DLL
    - Program crash
    PID:1652

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1540 -ip 1540
1⤵
- Loads dropped DLL
PID:2640

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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/1540-6-0x00000000014C0000-0x00000000014F0000-memory.dmp

Filesize
192KB

Download
memory/1540-10-0x0000000010000000-0x0000000010025000-memory.dmp

Filesize
148KB

Download
memory/1540-12-0x00000000014C0000-0x00000000014F0000-memory.dmp

Filesize
192KB

Download