e235f8965aaeb0a4b23ce2051cec87110e4e9853e5d439be33dff08d2174f97f

Analysis

max time kernel
122s
max time network
151s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
29-12-2023 21:21

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General

Target

0454fb1bf47e8004c86ef879c32b2dbd.dll
Size

236KB
MD5

0454fb1bf47e8004c86ef879c32b2dbd
SHA1

e027821350b03530bf20536ee590afe68599a577
SHA256

e235f8965aaeb0a4b23ce2051cec87110e4e9853e5d439be33dff08d2174f97f
SHA512

4fb30e4bc343b564761372d72ad265c1a99ba01bd7137b17e1ecfaacf1de0ec89957884d3ed0a48974d8f40d3bf71f482d72d16c64b6eda6ee41117fa7b01778
SSDEEP

3072:3F24fliN+7XlmZKxbLYH1rhAwHL5K2W5QVgxwkFb:3F24flic7X8ZibLYHFhAkKZYgnb

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
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\ShellServiceObjectDelayLoad\qnwiuzhsm = "{abecad9e-2364-78b9-3475-23642516e1e4}"	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\ShellServiceObjectDelayLoad	rundll32.exe

Loads dropped DLL 1 IoCs

pid	Process
2616	rundll32.exe

Drops file in System32 directory 4 IoCs

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

Modifies registry class 5 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{abecad9e-2364-78b9-3475-23642516e1e4}\	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{abecad9e-2364-78b9-3475-23642516e1e4}\InprocServer32	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{abecad9e-2364-78b9-3475-23642516e1e4}\InprocServer32\ = "C:\\Windows\\SysWow64\\lirdpucnh.dll"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{abecad9e-2364-78b9-3475-23642516e1e4}\InprocServer32\ThreadingModel = "Apartment"	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{abecad9e-2364-78b9-3475-23642516e1e4}	rundll32.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2616	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2616	rundll32.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2616	rundll32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 3032 wrote to memory of 2616	3032	rundll32.exe	29
PID 3032 wrote to memory of 2616	3032	rundll32.exe	29
PID 3032 wrote to memory of 2616	3032	rundll32.exe	29
PID 3032 wrote to memory of 2616	3032	rundll32.exe	29
PID 3032 wrote to memory of 2616	3032	rundll32.exe	29
PID 3032 wrote to memory of 2616	3032	rundll32.exe	29
PID 3032 wrote to memory of 2616	3032	rundll32.exe	29

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\0454fb1bf47e8004c86ef879c32b2dbd.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:3032
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\0454fb1bf47e8004c86ef879c32b2dbd.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:2616

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\dajvhmufz.dll

Filesize
625KB

MD5
95e2376b3323f062eb562b8586d0f14a

SHA1
453d4c3bf4a489433b593420a37bbffb7749875a

SHA256
bd3fa8750123d00aa0967fba44372c46ea002681da9c9b77a4f9261553e26017

SHA512
b898603d07a49237e4dfc6872d5caa7616bae1258926f10e66c4d3f0d81cccefac1e844395b65bb1f308fbc022061b52e51f60658d0a546c04b365b3428cc87d

Download Submit
memory/2616-0-0x00000000001E0000-0x0000000000224000-memory.dmp

Filesize
272KB

Download
memory/2616-1-0x00000000001E0000-0x0000000000224000-memory.dmp

Filesize
272KB

Download
memory/2616-8-0x0000000075E60000-0x0000000075F00000-memory.dmp

Filesize
640KB

Download
memory/2616-9-0x00000000001E0000-0x0000000000224000-memory.dmp

Filesize
272KB

Download
memory/2616-10-0x00000000001E0000-0x0000000000224000-memory.dmp

Filesize
272KB

Download
memory/2616-13-0x00000000001E0000-0x0000000000224000-memory.dmp

Filesize
272KB

Download
memory/2616-15-0x0000000075E60000-0x0000000075F00000-memory.dmp

Filesize
640KB

Download