1b303e91c83350df4a19adb18f3e7ea363df624ced2b78ed83edca4e32dd4815

Analysis

max time kernel
91s
max time network
93s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
26/05/2024, 20:55

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General

Target

1b303e91c83350df4a19adb18f3e7ea363df624ced2b78ed83edca4e32dd4815.dll
Size

223KB
MD5

e99dbe658c43d22074ae5d3a0f83851c
SHA1

b084b400c98b97c573f7c3a736a54d26c67d359e
SHA256

1b303e91c83350df4a19adb18f3e7ea363df624ced2b78ed83edca4e32dd4815
SHA512

8cb520177c9c616daf43b6c110104d928daf039326109fadf6fa75d9825c77342881be29986ffeb6a1e7c8682a8b210f4dd890d4d25dbbe253dbfe512e8a1540
SSDEEP

3072:6huf5Acecv3JvK2agufAnAZdlGZxIOtY81fs2lQBV+UdE+rECWp7hKxd5AxvFj:ZBAcjVagufYLIBV+UdvrEFp7hKbexvN

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/0x0007000000023305-1.dat	acprotect

Loads dropped DLL 2 IoCs

pid	Process
1524	rundll32.exe
1524	rundll32.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x0007000000023305-1.dat	upx
behavioral2/memory/1524-10-0x00000000005A0000-0x00000000005D0000-memory.dmp	upx
behavioral2/memory/1524-7-0x00000000005A0000-0x00000000005D0000-memory.dmp	upx
behavioral2/memory/1524-6-0x00000000005A0000-0x00000000005D0000-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

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1524	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 656 wrote to memory of 1524	656	rundll32.exe	82
PID 656 wrote to memory of 1524	656	rundll32.exe	82
PID 656 wrote to memory of 1524	656	rundll32.exe	82

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\1b303e91c83350df4a19adb18f3e7ea363df624ced2b78ed83edca4e32dd4815.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:656
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\1b303e91c83350df4a19adb18f3e7ea363df624ced2b78ed83edca4e32dd4815.dll,#1
  2⤵
  - Loads dropped DLL
  - Drops file in Program Files directory
  - Suspicious use of AdjustPrivilegeToken
  PID:1524

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/1524-10-0x00000000005A0000-0x00000000005D0000-memory.dmp

Filesize
192KB

Download
memory/1524-7-0x00000000005A0000-0x00000000005D0000-memory.dmp

Filesize
192KB

Download
memory/1524-6-0x00000000005A0000-0x00000000005D0000-memory.dmp

Filesize
192KB

Download