3b263b15c3e34d37a94e5e024c4cff2ee9e3b4438c5b3b21bf7e69a39989cc4f

Analysis

max time kernel
131s
max time network
100s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
17/05/2024, 13:55

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General

Target

3b263b15c3e34d37a94e5e024c4cff2ee9e3b4438c5b3b21bf7e69a39989cc4f.dll
Size

223KB
MD5

bd8c203120ac69ba701fc928faa2122f
SHA1

53fcd2a84e1845f80909bebdbcb746d16e00f9ed
SHA256

3b263b15c3e34d37a94e5e024c4cff2ee9e3b4438c5b3b21bf7e69a39989cc4f
SHA512

551f847b87f4846a721c4462dc73e396c674da5353ce240196613d18e91a60895c722df1e6e40bebe351b5fb40d6107a35abffa10edf45315a6dd4a3d6c3f417
SSDEEP

3072:6huf5AUWGIcvnJvK25KfAnAZdlGZxIOtY81fs2lQBV+UdE+rECWp7hK7yKIL:ZBAUWGxV5KfYLIBV+UdvrEFp7hK7y1

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/0x000600000002327c-1.dat	acprotect

Loads dropped DLL 4 IoCs

pid	Process
1324	rundll32.exe
1324	rundll32.exe
4408	WerFault.exe
3376	WerFault.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x000600000002327c-1.dat	upx
behavioral2/memory/1324-6-0x0000000000E40000-0x0000000000E70000-memory.dmp	upx
behavioral2/memory/1324-12-0x0000000000E40000-0x0000000000E70000-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
3376	1324	WerFault.exe	84

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1324	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 628 wrote to memory of 1324	628	rundll32.exe	84
PID 628 wrote to memory of 1324	628	rundll32.exe	84
PID 628 wrote to memory of 1324	628	rundll32.exe	84

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\3b263b15c3e34d37a94e5e024c4cff2ee9e3b4438c5b3b21bf7e69a39989cc4f.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:628
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\3b263b15c3e34d37a94e5e024c4cff2ee9e3b4438c5b3b21bf7e69a39989cc4f.dll,#1
  2⤵
  - Loads dropped DLL
  - Drops file in Program Files directory
  - Suspicious use of AdjustPrivilegeToken
  PID:1324
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 1324 -s 712
    3⤵
    - Loads dropped DLL
    - Program crash
    PID:3376

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1324 -ip 1324
1⤵
- Loads dropped DLL
PID:4408

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/1324-6-0x0000000000E40000-0x0000000000E70000-memory.dmp

Filesize
192KB

Download
memory/1324-10-0x0000000010000000-0x0000000010025000-memory.dmp

Filesize
148KB

Download
memory/1324-12-0x0000000000E40000-0x0000000000E70000-memory.dmp

Filesize
192KB

Download