2f49265797c7b7452ff754a178995629fbbe1a371873f505dae15ccfe218b170

Analysis

max time kernel
165s
max time network
193s
platform
windows10-2004_x64
resource
win10v2004-20221111-en
resource tags

arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
submitted
30-11-2022 17:32

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General

Target

teased/brisk.vbs
Size

179B
MD5

d8ab48bc5170122c8acb023c638a66c8
SHA1

2a30177c521710a139b57216415cecb85efb2e58
SHA256

d2f7c74338d0e10042aeeec59f209762bbd131cbdb284ff731d0384de2a1ac7c
SHA512

ef9ce632e556acbcf56617ec623df80a2276a679fd8a7cbb294eb3eae93524772dcdfe4ca0860a9c7d62b41e45353454e2e95ddd0c3c92bbe54ba1d7e966122c

Score

7^/10

Malware Config

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

Processes:

WScript.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\Control Panel\International\Geo\Nation	WScript.exe

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

Processes:

powershell.exe

pid process

1908 powershell.exe
1908 powershell.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

powershell.exe

description pid process

Token: SeDebugPrivilege 1908 powershell.exe

pid	process
1908	powershell.exe
1908	powershell.exe

description	pid	process
Token: SeDebugPrivilege	1908	powershell.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

WScript.exe

description	pid	process	target process
PID 1524 wrote to memory of 1908	1524	WScript.exe	powershell.exe
PID 1524 wrote to memory of 1908	1524	WScript.exe	powershell.exe
PID 1524 wrote to memory of 1908	1524	WScript.exe	powershell.exe

C:\Windows\System32\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\teased\brisk.vbs"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1524
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass teased\\streetcar.ps1
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1908

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

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1908-132-0x0000000000000000-mapping.dmp

Download
memory/1908-133-0x0000000002230000-0x0000000002266000-memory.dmp

Filesize
216KB

Download
memory/1908-134-0x0000000004C10000-0x0000000005238000-memory.dmp

Filesize
6.2MB

Download
memory/1908-135-0x0000000004BA0000-0x0000000004BC2000-memory.dmp

Filesize
136KB

Download
memory/1908-136-0x00000000053F0000-0x0000000005456000-memory.dmp

Filesize
408KB

Download
memory/1908-137-0x0000000005460000-0x00000000054C6000-memory.dmp

Filesize
408KB

Download
memory/1908-138-0x0000000005B40000-0x0000000005B5E000-memory.dmp

Filesize
120KB

Download