5a286221ce86728cf58fcd5f8d48b646965899c595fb6893e94f90601a043ea0

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
22-05-2024 23:42

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General

Target

5a286221ce86728cf58fcd5f8d48b646965899c595fb6893e94f90601a043ea0.dll
Size

223KB
MD5

fb2b5ca0b97d833cd1efa22083064740
SHA1

7541ccc59b200df81a8578a085763cddbee0ec54
SHA256

5a286221ce86728cf58fcd5f8d48b646965899c595fb6893e94f90601a043ea0
SHA512

5d9b5b3d42b5cad24e6ac0d19d422bdb2de36ee155739dee58e1d8dd9e91a03211f7cb89987809351e5461a9ed9f779251979c380cea8406066e61aa2c96e4dc
SSDEEP

3072:6huf5AUWGIcvvJTeagufAnAZdlGZxIOtY81fs2lQBV+UdE+rECWp7hKj2Y:ZBAUWGdeagufYLIBV+UdvrEFp7hKj2Y

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.

Processes:

resource	yara_rule
C:\Program Files\Common Files\System\symsrv.dll	acprotect

Loads dropped DLL 4 IoCs

Processes:

rundll32.exeWerFault.exeWerFault.exe

pid process

3880 rundll32.exe
3880 rundll32.exe
3796 WerFault.exe
428 WerFault.exe

pid	process
3880	rundll32.exe
3880	rundll32.exe
3796	WerFault.exe
428	WerFault.exe

UPX packed file 3 IoCs

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

upx

Processes:

resource	yara_rule
C:\Program Files\Common Files\System\symsrv.dll	upx
behavioral2/memory/3880-6-0x0000000001070000-0x00000000010A0000-memory.dmp	upx
behavioral2/memory/3880-12-0x0000000001070000-0x00000000010A0000-memory.dmp	upx

Drops file in Program Files directory 1 IoCs

Processes:

rundll32.exe

description ioc process

File created C:\Program Files\Common Files\System\symsrv.dll rundll32.exe
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

428 3880 WerFault.exe rundll32.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

rundll32.exe

description pid process

Token: SeDebugPrivilege 3880 rundll32.exe

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

pid	pid_target	process	target process
428	3880	WerFault.exe	rundll32.exe

description	pid	process
Token: SeDebugPrivilege	3880	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

rundll32.exe

description	pid	process	target process
PID 1460 wrote to memory of 3880	1460	rundll32.exe	rundll32.exe
PID 1460 wrote to memory of 3880	1460	rundll32.exe	rundll32.exe
PID 1460 wrote to memory of 3880	1460	rundll32.exe	rundll32.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\5a286221ce86728cf58fcd5f8d48b646965899c595fb6893e94f90601a043ea0.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1460

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\5a286221ce86728cf58fcd5f8d48b646965899c595fb6893e94f90601a043ea0.dll,#1
2⤵
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious use of AdjustPrivilegeToken
PID:3880

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 3880 -s 712
3⤵
- Loads dropped DLL
- Program crash
PID:428

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 368 -p 3880 -ip 3880
1⤵
- Loads dropped DLL
PID:3796

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/3880-6-0x0000000001070000-0x00000000010A0000-memory.dmp

Filesize
192KB

Download
memory/3880-10-0x0000000010000000-0x0000000010025000-memory.dmp

Filesize
148KB

Download
memory/3880-12-0x0000000001070000-0x00000000010A0000-memory.dmp

Filesize
192KB

Download