e2f5698fe054ef7c697d171be066ee38c0345741af0db9f84bbf1ca55db91d83

Analysis

max time kernel
117s
max time network
123s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
03/01/2024, 14:38

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General

Target

05d649709a046e92789db518f341d4da.dll
Size

236KB
MD5

05d649709a046e92789db518f341d4da
SHA1

19037da9c5e35e7bbed86f2132c06f4c16e87ec5
SHA256

e2f5698fe054ef7c697d171be066ee38c0345741af0db9f84bbf1ca55db91d83
SHA512

bcb31232c784319d7ed6099b92044ce6733435d083536439fd8fbca701995754092de2bf7c8a05c19469d92be449c09c7ed8003f585104b91256c8c0505e126c
SSDEEP

3072:SeqmgHwlaazN9U3J+P0wFp+bLrt2wkkIz:+Qj9U3jwO3rt58

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\vmpibhq = "{9e36b9ea-16be-6b03-27cf-16be31621906}"	rundll32.exe

Loads dropped DLL 1 IoCs

pid	Process
1876	rundll32.exe

Drops file in System32 directory 4 IoCs

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

Modifies registry class 5 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{9e36b9ea-16be-6b03-27cf-16be31621906}\InprocServer32	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{9e36b9ea-16be-6b03-27cf-16be31621906}\InprocServer32\ = "C:\\Windows\\SysWow64\\qhkdwcl.dll"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{9e36b9ea-16be-6b03-27cf-16be31621906}\InprocServer32\ThreadingModel = "Apartment"	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{9e36b9ea-16be-6b03-27cf-16be31621906}	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{9e36b9ea-16be-6b03-27cf-16be31621906}\	rundll32.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
1876	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1876	rundll32.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1876	rundll32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2436 wrote to memory of 1876	2436	rundll32.exe	28
PID 2436 wrote to memory of 1876	2436	rundll32.exe	28
PID 2436 wrote to memory of 1876	2436	rundll32.exe	28
PID 2436 wrote to memory of 1876	2436	rundll32.exe	28
PID 2436 wrote to memory of 1876	2436	rundll32.exe	28
PID 2436 wrote to memory of 1876	2436	rundll32.exe	28
PID 2436 wrote to memory of 1876	2436	rundll32.exe	28

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\05d649709a046e92789db518f341d4da.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2436
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\05d649709a046e92789db518f341d4da.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:1876

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

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Downloads

\Windows\SysWOW64\izcvoud.dll

Filesize
625KB

MD5
95e2376b3323f062eb562b8586d0f14a

SHA1
453d4c3bf4a489433b593420a37bbffb7749875a

SHA256
bd3fa8750123d00aa0967fba44372c46ea002681da9c9b77a4f9261553e26017

SHA512
b898603d07a49237e4dfc6872d5caa7616bae1258926f10e66c4d3f0d81cccefac1e844395b65bb1f308fbc022061b52e51f60658d0a546c04b365b3428cc87d

Download Submit
memory/1876-0-0x00000000002A0000-0x00000000002E4000-memory.dmp

Filesize
272KB

Download
memory/1876-1-0x00000000002A0000-0x00000000002E4000-memory.dmp

Filesize
272KB

Download
memory/1876-9-0x0000000076D30000-0x0000000076DD0000-memory.dmp

Filesize
640KB

Download
memory/1876-10-0x0000000076D30000-0x0000000076DD0000-memory.dmp

Filesize
640KB

Download
memory/1876-11-0x00000000002A0000-0x00000000002E4000-memory.dmp

Filesize
272KB

Download
memory/1876-12-0x0000000076D30000-0x0000000076DD0000-memory.dmp

Filesize
640KB

Download