a040ba2560f48fb3048ccd0f8c6c9eb5bec8bfec5f7d96555f80a66507b8a01c

Analysis

max time kernel
121s
max time network
122s
platform
windows7_x64
resource
win7-20240220-en
resource tags

arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
submitted
27-02-2024 15:34

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General

Target

a98305a4b5f7089e5b293c003ca30478.dll
Size

184KB
MD5

a98305a4b5f7089e5b293c003ca30478
SHA1

7f61e6b81bfd81bbd9a42cbd7eabfa96ba0cb0fb
SHA256

a040ba2560f48fb3048ccd0f8c6c9eb5bec8bfec5f7d96555f80a66507b8a01c
SHA512

39952b76f353f3af411e8829d693fcc911510351b3fa2ed038b98186318a5f88d2bc69c475b4bb69dd92d89e543133f306117c37ff5098f27f36e88f6f596d3c
SSDEEP

3072:SM9G53EX+jxtGkW0wVavfw3pITHi/3kgt4p/Jtjb:65hxtpW0pmIi1y3

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\pmsoarbf = "{F5B0ED57-8694-489E-9B14-597C97FC4EEF}"	rundll32.exe

Modifies registry class 5 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{F5B0ED57-8694-489E-9B14-597C97FC4EEF}\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\{F5B0ED57-8694-489E-9B14-597C97FC4EEF}	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{F5B0ED57-8694-489E-9B14-597C97FC4EEF}\InProcServer32\ = "C:\\Windows\\pmsoarbf.dll"	rundll32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2220 wrote to memory of 2068	2220	rundll32.exe	28
PID 2220 wrote to memory of 2068	2220	rundll32.exe	28
PID 2220 wrote to memory of 2068	2220	rundll32.exe	28
PID 2220 wrote to memory of 2068	2220	rundll32.exe	28
PID 2220 wrote to memory of 2068	2220	rundll32.exe	28
PID 2220 wrote to memory of 2068	2220	rundll32.exe	28
PID 2220 wrote to memory of 2068	2220	rundll32.exe	28

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\a98305a4b5f7089e5b293c003ca30478.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2220
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\a98305a4b5f7089e5b293c003ca30478.dll,#1
  2⤵
  - Adds autorun key to be loaded by Explorer.exe on startup
  - Modifies registry class
  PID:2068

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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