4123492e518b7c5a466947652e5290829e4529fd69886369606c9c7bae133e76

Analysis

max time kernel
144s
max time network
160s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
19-03-2024 12:26

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General

Target

d61c76b1dd393112c96b6f23a60cb775.dll
Size

29KB
MD5

d61c76b1dd393112c96b6f23a60cb775
SHA1

c669e16e9b9e0a59c9e73627a62c294c0c81e857
SHA256

4123492e518b7c5a466947652e5290829e4529fd69886369606c9c7bae133e76
SHA512

e576632d8aee45d2dd3f182f9a74a40b76b8038a1e9526b537ec38269aec94787cbf414a17ea47066219d02d4fc4af4b4954143272aeb58677d7f5ce52b2c769
SSDEEP

384:yvOXEyKZxxojJEiihVSNIxVwjURqG6syJNDG8eAMCttog4K+KWEcxrz/W6WWXrut:yrjMjURqhZDDteAM9zjEMrzFf6t

Score

8^/10

persistence

Malware Config

Signatures

Sets file execution options in registry 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\rundll32.exe	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\rundll32.exe\Debugger = "C:\\Program Files\\Internet Explorer\\rundll32 setupapi.dll,s"	rundll32.exe

Checks BIOS information in registry 2 TTPs 4 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	rundll32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	rundll32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	rundll32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	rundll32.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1004 wrote to memory of 4824	1004	rundll32.exe	87
PID 1004 wrote to memory of 4824	1004	rundll32.exe	87
PID 1004 wrote to memory of 4824	1004	rundll32.exe	87
PID 4824 wrote to memory of 1384	4824	rundll32.exe	89
PID 4824 wrote to memory of 1384	4824	rundll32.exe	89
PID 4824 wrote to memory of 1384	4824	rundll32.exe	89

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\d61c76b1dd393112c96b6f23a60cb775.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1004
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\d61c76b1dd393112c96b6f23a60cb775.dll,#1
  2⤵
  - Sets file execution options in registry
  - Checks BIOS information in registry
  - Suspicious use of WriteProcessMemory
  PID:4824
- - C:\Windows\SysWOW64\rundll32.exe
    rundll32 C:\Users\Admin\AppData\Local\Temp\d61c76b1dd393112c96b6f23a60cb775.dll,#1
    3⤵
    - Checks BIOS information in registry
    PID:1384

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

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/1384-3-0x0000000010000000-0x0000000010028000-memory.dmp

Filesize
160KB

Download
memory/1384-4-0x0000000010000000-0x0000000010028000-memory.dmp

Filesize
160KB

Download
memory/4824-0-0x0000000010000000-0x0000000010028000-memory.dmp

Filesize
160KB

Download
memory/4824-1-0x0000000010000000-0x0000000010028000-memory.dmp

Filesize
160KB

Download
memory/4824-2-0x0000000010000000-0x0000000010028000-memory.dmp

Filesize
160KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads