dc590a98f635fb47b661a86d46031f7d9323287347e3d720c82e733b31c05d56

Analysis

max time kernel
151s
max time network
139s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
11-10-2022 06:33

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General

Target

dc590a98f635fb47b661a86d46031f7d9323287347e3d720c82e733b31c05d56.dll
Size

24KB
MD5

6a683bf5a907cf81bde683c80c08c161
SHA1

125957af4f965a230e9c02a0352df42de0d1503b
SHA256

dc590a98f635fb47b661a86d46031f7d9323287347e3d720c82e733b31c05d56
SHA512

c2a7a016b272cf7aab8cb5a3eef58650adfbc734ab6d445894d6efb1ffd21a133ce8fbbcb8eaa58ee64fce6e8c223fa877400139778c6a7d6844dddc9c93bf1b
SSDEEP

384:i3SiXvoKLOQRckvzUg64WiJKIi0FfRRurbGVMR9CHom7:i3Si/otCIgNdzNS/G0CHb

Score

8^/10

persistence

Malware Config

Signatures

Blocklisted process makes network request 1 IoCs

flow	pid	Process
6	1928	rundll32.exe

Loads dropped DLL 1 IoCs

pid	Process
1928	rundll32.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\system = "C:\\Windows\\system32\\system.exe"	rundll32.exe

Enumerates connected drives 3 TTPs 1 IoCs

Attempts to read the root path of hard drives other than the default C: drive.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
File opened (read-only)	\??\D:	rundll32.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1928	rundll32.exe
1928	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2868 wrote to memory of 1928	2868	rundll32.exe	82
PID 2868 wrote to memory of 1928	2868	rundll32.exe	82
PID 2868 wrote to memory of 1928	2868	rundll32.exe	82

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\dc590a98f635fb47b661a86d46031f7d9323287347e3d720c82e733b31c05d56.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2868
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\dc590a98f635fb47b661a86d46031f7d9323287347e3d720c82e733b31c05d56.dll,#1
  2⤵
  - Blocklisted process makes network request
  - Loads dropped DLL
  - Adds Run key to start application
  - Enumerates connected drives
  - Suspicious behavior: EnumeratesProcesses
  PID:1928

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

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\C76B.tmp

Filesize
4.3MB

MD5
6c7cdd25c2cb0073306eb22aebfc663f

SHA1
a1eba8ab49272b9852fe6a543677e8af36271248

SHA256
58280e3572333f97a7cf9f33e8d31dc26a98b6535965ebd0bde82249fc9bf705

SHA512
17344e07b9e9b2cd6ae4237d7f310732462f9cbb8656883607d7a1a4090e869265f92a6da1718dee50b1375b91583de60c6bd9e7e8db6b6e45e33f4b894365d6

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