dbda53cf7a8ea72b558c1836b7bb2956fa6cd453ed3df32f3d202aa4acdf763f

Analysis

max time kernel
144s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
25/12/2023, 04:06

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General

Target

047c6243635573153b77ab9c5de5a8e2.dll
Size

236KB
MD5

047c6243635573153b77ab9c5de5a8e2
SHA1

e547cde909b1156443ac439ab9cf8ed3f08d1a41
SHA256

dbda53cf7a8ea72b558c1836b7bb2956fa6cd453ed3df32f3d202aa4acdf763f
SHA512

b8f765f835c5a95a14059bba6de53eda1707aca55d5d77dc67f822312d253f49131377eab9592c4db0475e214dafb22ec063baa11602b6c05d20b365cb2770ca
SSDEEP

1536:Iguo2K86vta10RJQYPIHL+D5IWhxRh/Ci4ucg3/+k5ltr+DRPG8Gz7wk+cQvMt:Go256vS0RJAL+lHPKi40+66iwkD0W

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\nsv = "{923b9156-1ab3-6f08-2bc4-1ab319de99e0}"	rundll32.exe

Loads dropped DLL 1 IoCs

pid	Process
4840	rundll32.exe

Drops file in System32 directory 4 IoCs

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

Modifies registry class 5 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{923b9156-1ab3-6f08-2bc4-1ab319de99e0}\	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{923b9156-1ab3-6f08-2bc4-1ab319de99e0}\InprocServer32	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{923b9156-1ab3-6f08-2bc4-1ab319de99e0}\InprocServer32\ = "C:\\Windows\\SysWow64\\inq.dll"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{923b9156-1ab3-6f08-2bc4-1ab319de99e0}\InprocServer32\ThreadingModel = "Apartment"	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{923b9156-1ab3-6f08-2bc4-1ab319de99e0}	rundll32.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4840	rundll32.exe
4840	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4840	rundll32.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4840	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4380 wrote to memory of 4840	4380	rundll32.exe	88
PID 4380 wrote to memory of 4840	4380	rundll32.exe	88
PID 4380 wrote to memory of 4840	4380	rundll32.exe	88

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\047c6243635573153b77ab9c5de5a8e2.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4380
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\047c6243635573153b77ab9c5de5a8e2.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:4840

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

C:\Windows\SysWOW64\afi.dll

Filesize
478KB

MD5
e99416267b61f52fa5ab994019efd359

SHA1
86d31eae707db7fe51d2556394fcf0e8e9f6b0fd

SHA256
768c286674371564b5e6095edb56e0a4231f341be895da69cfccca5160029774

SHA512
0a1c7579a9c787c2c1bef35f0660e72e74b42824e14ebea63b87ed25ddaf107e3746567bb431cab41a2f6719fad2c22d96e0715a1fe085d75805d7d66f7f05ae

Download Submit
C:\Windows\SysWOW64\afi.dll

Filesize
473KB

MD5
20b6aedb7a5576bf9b11f562bd9b2783

SHA1
703551f324965a780bb0bae0ee75102a5889963d

SHA256
918cd6e7e4d23be4c979d770fcb74eae53844ce54e531438d4855c8c9b56aad0

SHA512
94e741b8d7630c021c5682af16211622b7ed98d3664ad1bdbe348baf2e301d72443a680443e204e3ee4151be1b53f8def488be671af780acff74c64ce454d28d

Download Submit
memory/4840-0-0x0000000000400000-0x0000000000444000-memory.dmp

Filesize
272KB

Download
memory/4840-7-0x00000000761B0000-0x000000007622A000-memory.dmp

Filesize
488KB

Download
memory/4840-10-0x0000000000400000-0x0000000000444000-memory.dmp

Filesize
272KB

Download
memory/4840-11-0x00000000761B0000-0x000000007622A000-memory.dmp

Filesize
488KB

Download