7d545f6a551b95124207719d7076c914a7e339bd2bc609b0fda67c6fad4979c0

Analysis

max time kernel
112s
max time network
138s
platform
windows10-2004_x64
resource
win10v2004-20220901-en
resource tags

arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
submitted
02/10/2022, 13:04

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General

Target

7d545f6a551b95124207719d7076c914a7e339bd2bc609b0fda67c6fad4979c0.dll
Size

236KB
MD5

413c6ec00e34654c26e73f6f2585a935
SHA1

a9915b8512e02b40237dd8cc199d96419d48bcf5
SHA256

7d545f6a551b95124207719d7076c914a7e339bd2bc609b0fda67c6fad4979c0
SHA512

3724ee7ac73b4fa4545064e7669f64ea1e34170d7db5ef67d9cf5008f2734d13960f692d190375fecdefbbf2269461712de1c272da45023d5201156a14787ac9
SSDEEP

1536:Iguo2K86vta10RJQYPIHL+D5IWhxRh/Ci4ucg3/+k5ltr+DRPG8Gz7wk+cQvMq:Go256vS0RJAL+lHPKi40+66iwkD0F

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\gscrveb = "{2ec13a94-a649-fb9e-b75a-a649b21c1039}"	rundll32.exe

Loads dropped DLL 1 IoCs

pid	Process
4844	rundll32.exe

Drops file in System32 directory 4 IoCs

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

Modifies registry class 5 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{2ec13a94-a649-fb9e-b75a-a649b21c1039}	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{2ec13a94-a649-fb9e-b75a-a649b21c1039}\	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{2ec13a94-a649-fb9e-b75a-a649b21c1039}\InprocServer32	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{2ec13a94-a649-fb9e-b75a-a649b21c1039}\InprocServer32\ = "C:\\Windows\\SysWow64\\bnxmqzw.dll"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{2ec13a94-a649-fb9e-b75a-a649b21c1039}\InprocServer32\ThreadingModel = "Apartment"	rundll32.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4844	rundll32.exe
4844	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4844	rundll32.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4844	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 5004 wrote to memory of 4844	5004	rundll32.exe	84
PID 5004 wrote to memory of 4844	5004	rundll32.exe	84
PID 5004 wrote to memory of 4844	5004	rundll32.exe	84

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\7d545f6a551b95124207719d7076c914a7e339bd2bc609b0fda67c6fad4979c0.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:5004
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\7d545f6a551b95124207719d7076c914a7e339bd2bc609b0fda67c6fad4979c0.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:4844

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\tfpeiro.dll

Filesize
478KB

MD5
e99416267b61f52fa5ab994019efd359

SHA1
86d31eae707db7fe51d2556394fcf0e8e9f6b0fd

SHA256
768c286674371564b5e6095edb56e0a4231f341be895da69cfccca5160029774

SHA512
0a1c7579a9c787c2c1bef35f0660e72e74b42824e14ebea63b87ed25ddaf107e3746567bb431cab41a2f6719fad2c22d96e0715a1fe085d75805d7d66f7f05ae

Download Submit
memory/4844-134-0x0000000000400000-0x0000000000444000-memory.dmp

Filesize
272KB

Download
memory/4844-135-0x0000000000400000-0x0000000000444000-memory.dmp

Filesize
272KB

Download