5357fc179da346b3a1940b4d52b547c211816e2f48058a560f4d0f5cde100c0d

Analysis

max time kernel
188s
max time network
208s
platform
windows10-2004_x64
resource
win10v2004-20221111-en
resource tags

arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
submitted
01/12/2022, 04:29

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General

Target

5357fc179da346b3a1940b4d52b547c211816e2f48058a560f4d0f5cde100c0d.dll
Size

236KB
MD5

5bd1f5616972138a5232877f3aa4d2fa
SHA1

8fe5e8346f1ac96948d762c71b00624694d14d0c
SHA256

5357fc179da346b3a1940b4d52b547c211816e2f48058a560f4d0f5cde100c0d
SHA512

a92b830db1bf416699984f89b6ae2adedb87474210a7a3863535a83f955b7507df2e13f405dc9b7e1bfd4d8ac8385325c956d3081bcbf91b42161d9656ec3cba
SSDEEP

1536:Iguo2K86vta10RJQYPIHL+D5IWhxRh/Ci4ucg3/+k5ltr+DRPG8Gz7wk+cQvMh:Go256vS0RJAL+lHPKi40+66iwkD0a

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\jpufi = "{3fc94b77-b741-0c96-c852-b741c3ff3978}"	rundll32.exe

Loads dropped DLL 1 IoCs

pid	Process
3320	rundll32.exe

Drops file in System32 directory 4 IoCs

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

Modifies registry class 5 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{3fc94b77-b741-0c96-c852-b741c3ff3978}	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{3fc94b77-b741-0c96-c852-b741c3ff3978}\	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{3fc94b77-b741-0c96-c852-b741c3ff3978}\InprocServer32	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{3fc94b77-b741-0c96-c852-b741c3ff3978}\InprocServer32\ = "C:\\Windows\\SysWow64\\ekpad.dll"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{3fc94b77-b741-0c96-c852-b741c3ff3978}\InprocServer32\ThreadingModel = "Apartment"	rundll32.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3320	rundll32.exe
3320	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3320	rundll32.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3320	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4228 wrote to memory of 3320	4228	rundll32.exe	82
PID 4228 wrote to memory of 3320	4228	rundll32.exe	82
PID 4228 wrote to memory of 3320	4228	rundll32.exe	82

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\5357fc179da346b3a1940b4d52b547c211816e2f48058a560f4d0f5cde100c0d.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4228
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\5357fc179da346b3a1940b4d52b547c211816e2f48058a560f4d0f5cde100c0d.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:3320

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

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Downloads

C:\Windows\SysWOW64\wchsv.dll

Filesize
478KB

MD5
e99416267b61f52fa5ab994019efd359

SHA1
86d31eae707db7fe51d2556394fcf0e8e9f6b0fd

SHA256
768c286674371564b5e6095edb56e0a4231f341be895da69cfccca5160029774

SHA512
0a1c7579a9c787c2c1bef35f0660e72e74b42824e14ebea63b87ed25ddaf107e3746567bb431cab41a2f6719fad2c22d96e0715a1fe085d75805d7d66f7f05ae

Download Submit
memory/3320-134-0x0000000000400000-0x0000000000444000-memory.dmp

Filesize
272KB

Download
memory/3320-135-0x0000000000400000-0x0000000000444000-memory.dmp

Filesize
272KB

Download