4d8bc38b07d2ac5f64a5f816fc9852583790f4c447db839691e6e2dced0f0576

Analysis

max time kernel
142s
max time network
148s
platform
windows10-2004_x64
resource
win10v2004-20231023-en
resource tags

arch:x64arch:x86image:win10v2004-20231023-enlocale:en-usos:windows10-2004-x64system
submitted
12-11-2023 15:47

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General

Target

4d8bc38b07d2ac5f64a5f816fc9852583790f4c447db839691e6e2dced0f0576.dll
Size

3.9MB
MD5

c614f9f39f0bd81339977a2f018700d9
SHA1

f92a9ff673a98a8631dcd40f0572f7ac3da3f465
SHA256

4d8bc38b07d2ac5f64a5f816fc9852583790f4c447db839691e6e2dced0f0576
SHA512

2a5efbd5309765af3b8fc778cd10f4c4c7a9611c8811cb55cd1285d72dc95484de7fac35668a44f609fd0ee4d9490bc937332a091f84fa09c49194b2e605b1b5
SSDEEP

98304:57GksF7SiXgFPQQO3UM6OzRiZ7Q33mUphiuFin0MI:BNsFNwFPzO3F6o0QhTFCO

Score

8^/10

upx

Malware Config

Signatures

Blocklisted process makes network request 1 IoCs

flow	pid	Process
33	1464	rundll32.exe

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral2/files/0x0006000000022dd9-1.dat	acprotect

Loads dropped DLL 1 IoCs

pid	Process
1464	rundll32.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x0006000000022dd9-1.dat	upx
behavioral2/memory/1464-5-0x0000000005000000-0x0000000006078000-memory.dmp	upx
behavioral2/memory/1464-6-0x0000000005000000-0x0000000006078000-memory.dmp	upx
behavioral2/memory/1464-7-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral2/memory/1464-10-0x0000000010000000-0x0000000010030000-memory.dmp	upx

Enumerates connected drives 3 TTPs 1 IoCs

Attempts to read the root path of hard drives other than the default C: drive.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
File opened (read-only)	\??\e:	rundll32.exe

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files\Common Files\System\symsrv.dll	rundll32.exe
File created	\??\c:\program files\common files\system\symsrv.dll.000	rundll32.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1464	rundll32.exe
1464	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1464	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4120 wrote to memory of 1464	4120	rundll32.exe	86
PID 4120 wrote to memory of 1464	4120	rundll32.exe	86
PID 4120 wrote to memory of 1464	4120	rundll32.exe	86

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\4d8bc38b07d2ac5f64a5f816fc9852583790f4c447db839691e6e2dced0f0576.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4120
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\4d8bc38b07d2ac5f64a5f816fc9852583790f4c447db839691e6e2dced0f0576.dll,#1
  2⤵
  - Blocklisted process makes network request
  - Loads dropped DLL
  - Enumerates connected drives
  - Drops file in Program Files directory
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1464

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

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/1464-5-0x0000000005000000-0x0000000006078000-memory.dmp

Filesize
16.5MB

Download
memory/1464-6-0x0000000005000000-0x0000000006078000-memory.dmp

Filesize
16.5MB

Download
memory/1464-7-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/1464-9-0x0000000075D40000-0x0000000075DA3000-memory.dmp

Filesize
396KB

Download
memory/1464-10-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/1464-11-0x0000000075D40000-0x0000000075DA3000-memory.dmp

Filesize
396KB

Download