26076d852535f82e00df5b94010f9f2cbfd4b8272982a25b88ea4e780df1d94b

Analysis

max time kernel
145s
max time network
157s
platform
windows10-2004_x64
resource
win10v2004-20230915-en
resource tags

arch:x64arch:x86image:win10v2004-20230915-enlocale:en-usos:windows10-2004-x64system
submitted
11/10/2023, 11:52

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General

Target

26076d852535f82e00df5b94010f9f2cbfd4b8272982a25b88ea4e780df1d94b.dll
Size

632KB
MD5

fa9c55d93316a71cdb0865066fe91b30
SHA1

5a85b3c9f8c39bdb6a2dcc6340f534435be0eb5d
SHA256

26076d852535f82e00df5b94010f9f2cbfd4b8272982a25b88ea4e780df1d94b
SHA512

9998a4c77676c0dfaca512cf0299b12b969f64ddd0f787b4376401f2001f769d16b3a9b8dfb6c4d6354a9542d7b0ba207e71556f27ff4b6d0ed5bbba3f38830a
SSDEEP

12288:n2ojwpSrNlxw8NjvOX0Y9b4U54hv+QohBjvrEH7q0:n2gwpSrtwmjAF9bB4hvXo/rEH7q0

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/0x000800000002322e-1.dat	acprotect

Loads dropped DLL 1 IoCs

pid	Process
4244	rundll32.exe

UPX packed file 6 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x000800000002322e-1.dat	upx
behavioral2/memory/4244-4-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral2/memory/4244-8-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral2/memory/4244-12-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral2/memory/4244-14-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral2/memory/4244-15-0x0000000010000000-0x0000000010030000-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 1 IoCs

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

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4244	rundll32.exe
4244	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4244	rundll32.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
4244	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4788 wrote to memory of 4244	4788	rundll32.exe	86
PID 4788 wrote to memory of 4244	4788	rundll32.exe	86
PID 4788 wrote to memory of 4244	4788	rundll32.exe	86

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\26076d852535f82e00df5b94010f9f2cbfd4b8272982a25b88ea4e780df1d94b.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4788
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\26076d852535f82e00df5b94010f9f2cbfd4b8272982a25b88ea4e780df1d94b.dll,#1
  2⤵
  - Loads dropped DLL
  - Enumerates connected drives
  - Drops file in Program Files directory
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of FindShellTrayWindow
  PID:4244

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

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/4244-4-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/4244-5-0x0000000075150000-0x00000000751DB000-memory.dmp

Filesize
556KB

Download
memory/4244-6-0x0000000075150000-0x00000000751DB000-memory.dmp

Filesize
556KB

Download
memory/4244-8-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/4244-12-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/4244-13-0x0000000075150000-0x00000000751DB000-memory.dmp

Filesize
556KB

Download
memory/4244-14-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/4244-15-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download