4b7c4a3e57523c1e7ffcc105ef6ccfa655f8991ba36d47871243d5bd08850e40

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, 06:22

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General

Target

4b7c4a3e57523c1e7ffcc105ef6ccfa655f8991ba36d47871243d5bd08850e40.dll
Size

223KB
MD5

6d11108746424e49dd5123b448476bd6
SHA1

fc6d18ad555463ca6b89facad9d30f03ac733772
SHA256

4b7c4a3e57523c1e7ffcc105ef6ccfa655f8991ba36d47871243d5bd08850e40
SHA512

62335a3c7740183dd4a7deabf91849ad59e66bea61ba36c1e52bf697f6e67e75ef3f6638ad32027182a347e8af6d485dc88619b3678e653e0db87f1b44350929
SSDEEP

3072:6huf5AUWGIcvXJvK2yhnAZdlGZxIOtY81fs2lQBV+UdE+rECWp7hKDl:ZBAUWGRVyTLIBV+UdvrEFp7hKDl

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/0x00090000000226e8-1.dat	acprotect

Loads dropped DLL 4 IoCs

pid	Process
3508	rundll32.exe
3508	rundll32.exe
1140	WerFault.exe
2956	WerFault.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x00090000000226e8-1.dat	upx
behavioral2/memory/3508-7-0x00000000020D0000-0x0000000002100000-memory.dmp	upx
behavioral2/memory/3508-6-0x00000000020D0000-0x0000000002100000-memory.dmp	upx
behavioral2/memory/3508-13-0x00000000020D0000-0x0000000002100000-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
2956	3508	WerFault.exe	83

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3508	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4732 wrote to memory of 3508	4732	rundll32.exe	83
PID 4732 wrote to memory of 3508	4732	rundll32.exe	83
PID 4732 wrote to memory of 3508	4732	rundll32.exe	83

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\4b7c4a3e57523c1e7ffcc105ef6ccfa655f8991ba36d47871243d5bd08850e40.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4732
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\4b7c4a3e57523c1e7ffcc105ef6ccfa655f8991ba36d47871243d5bd08850e40.dll,#1
  2⤵
  - Loads dropped DLL
  - Drops file in Program Files directory
  - Suspicious use of AdjustPrivilegeToken
  PID:3508
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 3508 -s 720
    3⤵
    - Loads dropped DLL
    - Program crash
    PID:2956

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 3508 -ip 3508
1⤵
- Loads dropped DLL
PID:1140

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/3508-7-0x00000000020D0000-0x0000000002100000-memory.dmp

Filesize
192KB

Download
memory/3508-6-0x00000000020D0000-0x0000000002100000-memory.dmp

Filesize
192KB

Download
memory/3508-13-0x00000000020D0000-0x0000000002100000-memory.dmp

Filesize
192KB

Download
memory/3508-11-0x0000000010000000-0x0000000010025000-memory.dmp

Filesize
148KB

Download