e0d43c155c12f350da7c65f579035dd9a32a0cff8c91ab24f7afebd705d1a1b7

Analysis

max time kernel
118s
max time network
119s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
24/12/2023, 14:30

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General

Target

01068575912747cf298399de21ab3bd5.dll
Size

236KB
MD5

01068575912747cf298399de21ab3bd5
SHA1

a7104c3cfad2f47bb542f21a97bb1c86f24dabd2
SHA256

e0d43c155c12f350da7c65f579035dd9a32a0cff8c91ab24f7afebd705d1a1b7
SHA512

bac3c672a58889f38be030a77b5cd3e36e6e8d6ba817bf440d0774cc2a5ed34c030906e73af3f3bb7035c0b5673bcf7ccc383fa1eb102c86fb3e5ff34959c136
SSDEEP

3072:3F24fliN+7XlmZKxbLYH1rhAwHL5K2W5QVgxwkFp:3F24flic7X8ZibLYHFhAkKZYgnp

Score

10^/10

persistence

Malware Config

Signatures

Adds autorun key to be loaded by Explorer.exe on startup 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\ShellServiceObjectDelayLoad	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\ShellServiceObjectDelayLoad\ioups = "{ee0f2cb3-6687-bbdc-7798-6687a43b89d1}"	rundll32.exe

Loads dropped DLL 1 IoCs

pid	Process
1736	rundll32.exe

Drops file in System32 directory 4 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\vbhcf.dll	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\vbhcf.dll	rundll32.exe
File created	C:\Windows\SysWOW64\djpkn.dll	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\djpkn.dll	rundll32.exe

Modifies registry class 5 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{ee0f2cb3-6687-bbdc-7798-6687a43b89d1}\InprocServer32	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{ee0f2cb3-6687-bbdc-7798-6687a43b89d1}\InprocServer32\ = "C:\\Windows\\SysWow64\\djpkn.dll"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{ee0f2cb3-6687-bbdc-7798-6687a43b89d1}\InprocServer32\ThreadingModel = "Apartment"	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{ee0f2cb3-6687-bbdc-7798-6687a43b89d1}	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{ee0f2cb3-6687-bbdc-7798-6687a43b89d1}\	rundll32.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
1736	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1736	rundll32.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1736	rundll32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2076 wrote to memory of 1736	2076	rundll32.exe	28
PID 2076 wrote to memory of 1736	2076	rundll32.exe	28
PID 2076 wrote to memory of 1736	2076	rundll32.exe	28
PID 2076 wrote to memory of 1736	2076	rundll32.exe	28
PID 2076 wrote to memory of 1736	2076	rundll32.exe	28
PID 2076 wrote to memory of 1736	2076	rundll32.exe	28
PID 2076 wrote to memory of 1736	2076	rundll32.exe	28

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\01068575912747cf298399de21ab3bd5.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2076
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\01068575912747cf298399de21ab3bd5.dll,#1
  2⤵
  - Adds autorun key to be loaded by Explorer.exe on startup
  - Loads dropped DLL
  - Drops file in System32 directory
  - Modifies registry class
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:1736

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

\Windows\SysWOW64\vbhcf.dll

Filesize
625KB

MD5
95e2376b3323f062eb562b8586d0f14a

SHA1
453d4c3bf4a489433b593420a37bbffb7749875a

SHA256
bd3fa8750123d00aa0967fba44372c46ea002681da9c9b77a4f9261553e26017

SHA512
b898603d07a49237e4dfc6872d5caa7616bae1258926f10e66c4d3f0d81cccefac1e844395b65bb1f308fbc022061b52e51f60658d0a546c04b365b3428cc87d

Download Submit
memory/1736-0-0x00000000003B0000-0x00000000003F4000-memory.dmp

Filesize
272KB

Download
memory/1736-2-0x00000000003B0000-0x00000000003F4000-memory.dmp

Filesize
272KB

Download
memory/1736-7-0x0000000075B40000-0x0000000075BE0000-memory.dmp

Filesize
640KB

Download
memory/1736-10-0x00000000003B0000-0x00000000003F4000-memory.dmp

Filesize
272KB

Download
memory/1736-11-0x0000000075B40000-0x0000000075BE0000-memory.dmp

Filesize
640KB

Download