6c87e8812e2d26901b465f411f2f4218521cec6a675d91ea42b5a8e1500c4edd

Analysis

max time kernel
44s
max time network
48s
platform
windows7_x64
resource
win7-20220901-en
resource tags

arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
submitted
28/10/2022, 18:05

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

6c87e8812e2d26901b465f411f2f4218521cec6a675d91ea42b5a8e1500c4edd.dll
Size

236KB
MD5

0c1ba824814c0245cec96cf70a1cb722
SHA1

ff9fb3392df2987ecd4697229d8bcbf0faf18eb2
SHA256

6c87e8812e2d26901b465f411f2f4218521cec6a675d91ea42b5a8e1500c4edd
SHA512

533c2e49a7b03ec2ebda02c20edf693577e45517866d3d3298e94c13a45597a6a010e0e0fb10687d5a5a3c13417d6e8b340fe5516dac8892242c02815257c479
SSDEEP

1536:Iguo2K86vta10RJQYPIHL+D5IWhxRh/Ci4ucg3/+k5ltr+DRPG8Gz7wk+cQvMh:Go256vS0RJAL+lHPKi40+66iwkD0q

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

T1060

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\eib = "{e257275e-6adf-bf24-7be0-6adfafd65213}"	rundll32.exe

Loads dropped DLL 1 IoCs

pid	Process
844	rundll32.exe

Drops file in System32 directory 4 IoCs

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

Modifies registry class 5 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{e257275e-6adf-bf24-7be0-6adfafd65213}\InprocServer32\ = "C:\\Windows\\SysWow64\\zdw.dll"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{e257275e-6adf-bf24-7be0-6adfafd65213}\InprocServer32\ThreadingModel = "Apartment"	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{e257275e-6adf-bf24-7be0-6adfafd65213}	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{e257275e-6adf-bf24-7be0-6adfafd65213}\	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{e257275e-6adf-bf24-7be0-6adfafd65213}\InprocServer32	rundll32.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
844	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	844	rundll32.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
844	rundll32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1348 wrote to memory of 844	1348	rundll32.exe	27
PID 1348 wrote to memory of 844	1348	rundll32.exe	27
PID 1348 wrote to memory of 844	1348	rundll32.exe	27
PID 1348 wrote to memory of 844	1348	rundll32.exe	27
PID 1348 wrote to memory of 844	1348	rundll32.exe	27
PID 1348 wrote to memory of 844	1348	rundll32.exe	27
PID 1348 wrote to memory of 844	1348	rundll32.exe	27

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\6c87e8812e2d26901b465f411f2f4218521cec6a675d91ea42b5a8e1500c4edd.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1348
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\6c87e8812e2d26901b465f411f2f4218521cec6a675d91ea42b5a8e1500c4edd.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:844

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

\Windows\SysWOW64\rvo.dll

Filesize
625KB

MD5
95e2376b3323f062eb562b8586d0f14a

SHA1
453d4c3bf4a489433b593420a37bbffb7749875a

SHA256
bd3fa8750123d00aa0967fba44372c46ea002681da9c9b77a4f9261553e26017

SHA512
b898603d07a49237e4dfc6872d5caa7616bae1258926f10e66c4d3f0d81cccefac1e844395b65bb1f308fbc022061b52e51f60658d0a546c04b365b3428cc87d

Download Submit
memory/844-55-0x0000000075601000-0x0000000075603000-memory.dmp

Filesize
8KB

Download
memory/844-58-0x0000000000150000-0x0000000000194000-memory.dmp

Filesize
272KB

Download