5fff503af773eb8ab4ed5c9624b6490648f3ed637efd98f125b200dd63c10d42

Analysis

max time kernel
140s
max time network
124s
platform
windows7_x64
resource
win7-20240220-en
resource tags

arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
submitted
08-06-2024 23:29

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General

Target

5fff503af773eb8ab4ed5c9624b6490648f3ed637efd98f125b200dd63c10d42.dll
Size

223KB
MD5

d65dfbafa0603babe1e42b091b05de21
SHA1

c1df49c3e8111a3948d85bcd30419261b7aa405f
SHA256

5fff503af773eb8ab4ed5c9624b6490648f3ed637efd98f125b200dd63c10d42
SHA512

4492c8d0400695491b6cb0d3471ad0ee93bd6bd8a68328059643a5177d5d42069f158974063bfbe2c7d0a8cd6712b97d392226fca8f1b2f77259d33ef20c4ff3
SSDEEP

3072:6huf5AoIcvbJvK2agufAnAZdlGZxIOtY81fs2lQBV+UdE+rECWp7hKLxvFuF:ZBAo1VagufYLIBV+UdvrEFp7hKLxv0

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
behavioral1/files/0x000c000000012707-1.dat	acprotect

Loads dropped DLL 2 IoCs

pid	Process
2916	rundll32.exe
2904	WerFault.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral1/files/0x000c000000012707-1.dat	upx
behavioral1/memory/2916-3-0x0000000000170000-0x00000000001A0000-memory.dmp	upx
behavioral1/memory/2916-7-0x0000000000170000-0x00000000001A0000-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
2904	2916	WerFault.exe	28

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2916	rundll32.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 2872 wrote to memory of 2916	2872	rundll32.exe	28
PID 2872 wrote to memory of 2916	2872	rundll32.exe	28
PID 2872 wrote to memory of 2916	2872	rundll32.exe	28
PID 2872 wrote to memory of 2916	2872	rundll32.exe	28
PID 2872 wrote to memory of 2916	2872	rundll32.exe	28
PID 2872 wrote to memory of 2916	2872	rundll32.exe	28
PID 2872 wrote to memory of 2916	2872	rundll32.exe	28
PID 2916 wrote to memory of 2904	2916	rundll32.exe	29
PID 2916 wrote to memory of 2904	2916	rundll32.exe	29
PID 2916 wrote to memory of 2904	2916	rundll32.exe	29
PID 2916 wrote to memory of 2904	2916	rundll32.exe	29

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\5fff503af773eb8ab4ed5c9624b6490648f3ed637efd98f125b200dd63c10d42.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2872
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\5fff503af773eb8ab4ed5c9624b6490648f3ed637efd98f125b200dd63c10d42.dll,#1
  2⤵
  - Loads dropped DLL
  - Drops file in Program Files directory
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2916
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2916 -s 336
    3⤵
    - Loads dropped DLL
    - Program crash
    PID:2904

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

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

Filesize
67KB

MD5
7574cf2c64f35161ab1292e2f532aabf

SHA1
14ba3fa927a06224dfe587014299e834def4644f

SHA256
de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085

SHA512
4db19f2d8d5bc1c7bbb812d3fa9c43b80fa22140b346d2760f090b73aed8a5177edb4bddc647a6ebd5a2db8565be5a1a36a602b0d759e38540d9a584ba5896ab

Download Submit
memory/2916-3-0x0000000000170000-0x00000000001A0000-memory.dmp

Filesize
192KB

Download
memory/2916-6-0x0000000010000000-0x0000000010025000-memory.dmp

Filesize
148KB

Download
memory/2916-7-0x0000000000170000-0x00000000001A0000-memory.dmp

Filesize
192KB

Download