504119d7dc5f67c44b4204c33c6873b2c8a6ba13c36e3973141929d3a28ac79e

Analysis

max time kernel
147s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
10/03/2024, 23:59

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General

Target

bf4d4f3672d983456f15cbfe8733cb7a.dll
Size

196KB
MD5

bf4d4f3672d983456f15cbfe8733cb7a
SHA1

cbeb1b29832e8fe38b0d874c83eb38b9a178c427
SHA256

504119d7dc5f67c44b4204c33c6873b2c8a6ba13c36e3973141929d3a28ac79e
SHA512

f257ada46e04ce10704bba26b51b1bf46b11fe4938053aa4dfb1c7ea8da8c61e0972cb4ba5bf9881a55317454d1a52bc155b835f03fe8ff7c45b578e1d639658
SSDEEP

3072:kbgmtI+jUzKQJmRSF12nhSxTSobS/xcGKSToX/fhIb9glpCrt6tR57y:C7AP8RSF12ASVmWToX/fmrtS57y

Score

10^/10

persistence

Malware Config

Signatures

Adds autorun key to be loaded by Explorer.exe on startup 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\ShellServiceObjectDelayLoad\vregfwlx = "{AF61CFCA-D88B-490D-B841-5BC74BBC43D4}"	rundll32.exe

Modifies registry class 5 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{AF61CFCA-D88B-490D-B841-5BC74BBC43D4}\InProcServer32	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{AF61CFCA-D88B-490D-B841-5BC74BBC43D4}	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{AF61CFCA-D88B-490D-B841-5BC74BBC43D4}\InProcServer32\ = "C:\\Windows\\vregfwlx.dll"	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4704 wrote to memory of 2136	4704	rundll32.exe	87
PID 4704 wrote to memory of 2136	4704	rundll32.exe	87
PID 4704 wrote to memory of 2136	4704	rundll32.exe	87

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\bf4d4f3672d983456f15cbfe8733cb7a.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4704
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\bf4d4f3672d983456f15cbfe8733cb7a.dll,#1
  2⤵
  - Adds autorun key to be loaded by Explorer.exe on startup
  - Modifies registry class
  PID:2136

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

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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