vidar | 0b1a0881946f6e4d8b4af01f6bceb0737fc58282d098ae1c36c25c24c53a7deb

Resubmissions

18-01-2023 14:08

230118-rfz7bsae22 10

16-12-2022 12:38

221216-pvfecsef97 7

Analysis

max time kernel
118s
max time network
158s
platform
windows10-2004_x64
resource
win10v2004-20221111-en
resource tags

arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
submitted
18-01-2023 14:08

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General

Target

BraveBrowserSetup.exe
Size

309.1MB
MD5

931195d97525e56b81273de435a1b23a
SHA1

a7b1888845db32aceb0c0d8a98a448e94ac95d0a
SHA256

bd06228669802c5ee2f00c900dd17efd1763780b17f05346d5ddcf6ead24297b
SHA512

c53b492d548f9cbd1f35aff646fe5344b141bf226aa78eb39c05914ff2704fd4cd9c5ed336967354b3311db487f60271374783ef6d485187ea714cd506912792
SSDEEP

24576:jgo+DDRIgvlC+pKc8zDkfxUXtWjPMBzuxK2:M5DDRISrxUcjPMBzuxv

Score

10^/10

vidar 1853 stealer

Malware Config

Extracted

Family

vidar

Version

56.2

Botnet

1853

https://t.me/+nxuZybmPtR01ZmE0

Attributes

profile_id
1853

Signatures

Vidar
Vidar is an infostealer based on Arkei stealer.
stealer vidar

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:

BraveBrowserSetup.exe

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

Suspicious use of SetThreadContext 1 IoCs

Processes:

BraveBrowserSetup.exe

description pid process target process

PID 1132 set thread context of 2424 1132 BraveBrowserSetup.exe BraveBrowserSetup.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 4 IoCs

Processes:

powershell.exeBraveBrowserSetup.exe

pid process

1620 powershell.exe
1620 powershell.exe
1132 BraveBrowserSetup.exe
1132 BraveBrowserSetup.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

BraveBrowserSetup.exepowershell.exe

description pid process

Token: SeDebugPrivilege 1132 BraveBrowserSetup.exe
Token: SeDebugPrivilege 1620 powershell.exe

description	pid	process	target process
PID 1132 set thread context of 2424	1132	BraveBrowserSetup.exe	BraveBrowserSetup.exe

pid	process
1620	powershell.exe
1620	powershell.exe
1132	BraveBrowserSetup.exe
1132	BraveBrowserSetup.exe

description	pid	process
Token: SeDebugPrivilege	1132	BraveBrowserSetup.exe
Token: SeDebugPrivilege	1620	powershell.exe

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

BraveBrowserSetup.exe

description	pid	process	target process
PID 1132 wrote to memory of 1620	1132	BraveBrowserSetup.exe	powershell.exe
PID 1132 wrote to memory of 1620	1132	BraveBrowserSetup.exe	powershell.exe
PID 1132 wrote to memory of 1620	1132	BraveBrowserSetup.exe	powershell.exe
PID 1132 wrote to memory of 2452	1132	BraveBrowserSetup.exe	BraveBrowserSetup.exe
PID 1132 wrote to memory of 2452	1132	BraveBrowserSetup.exe	BraveBrowserSetup.exe
PID 1132 wrote to memory of 2452	1132	BraveBrowserSetup.exe	BraveBrowserSetup.exe
PID 1132 wrote to memory of 2424	1132	BraveBrowserSetup.exe	BraveBrowserSetup.exe
PID 1132 wrote to memory of 2424	1132	BraveBrowserSetup.exe	BraveBrowserSetup.exe
PID 1132 wrote to memory of 2424	1132	BraveBrowserSetup.exe	BraveBrowserSetup.exe
PID 1132 wrote to memory of 2424	1132	BraveBrowserSetup.exe	BraveBrowserSetup.exe
PID 1132 wrote to memory of 2424	1132	BraveBrowserSetup.exe	BraveBrowserSetup.exe
PID 1132 wrote to memory of 2424	1132	BraveBrowserSetup.exe	BraveBrowserSetup.exe
PID 1132 wrote to memory of 2424	1132	BraveBrowserSetup.exe	BraveBrowserSetup.exe
PID 1132 wrote to memory of 2424	1132	BraveBrowserSetup.exe	BraveBrowserSetup.exe
PID 1132 wrote to memory of 2424	1132	BraveBrowserSetup.exe	BraveBrowserSetup.exe

C:\Users\Admin\AppData\Local\Temp\BraveBrowserSetup.exe
"C:\Users\Admin\AppData\Local\Temp\BraveBrowserSetup.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1132

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ENC cwB0AGEAcgB0AC0AcwBsAGUAZQBwACAALQBzAGUAYwBvAG4AZABzACAAMgAwAA==
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1620

C:\Users\Admin\AppData\Local\Temp\BraveBrowserSetup.exe
C:\Users\Admin\AppData\Local\Temp\BraveBrowserSetup.exe
2⤵
PID:2452

C:\Users\Admin\AppData\Local\Temp\BraveBrowserSetup.exe
C:\Users\Admin\AppData\Local\Temp\BraveBrowserSetup.exe
2⤵
PID:2424

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

memory/1132-132-0x0000000000310000-0x00000000003D6000-memory.dmp

Filesize
792KB

Download
memory/1132-133-0x00000000052F0000-0x0000000005894000-memory.dmp

Filesize
5.6MB

Download
memory/1132-134-0x0000000004E40000-0x0000000004ED2000-memory.dmp

Filesize
584KB

Download
memory/1132-135-0x0000000004F00000-0x0000000004F22000-memory.dmp

Filesize
136KB

Download
memory/1620-140-0x0000000005CC0000-0x0000000005D26000-memory.dmp

Filesize
408KB

Download
memory/1620-143-0x00000000067D0000-0x00000000067EA000-memory.dmp

Filesize
104KB

Download
memory/1620-138-0x00000000055B0000-0x0000000005BD8000-memory.dmp

Filesize
6.2MB

Download
memory/1620-139-0x0000000005C50000-0x0000000005CB6000-memory.dmp

Filesize
408KB

Download
memory/1620-136-0x0000000000000000-mapping.dmp

Download
memory/1620-141-0x00000000062C0000-0x00000000062DE000-memory.dmp

Filesize
120KB

Download
memory/1620-142-0x0000000007920000-0x0000000007F9A000-memory.dmp

Filesize
6.5MB

Download
memory/1620-137-0x0000000002CD0000-0x0000000002D06000-memory.dmp

Filesize
216KB

Download
memory/2424-145-0x0000000000000000-mapping.dmp

Download
memory/2424-146-0x0000000000400000-0x000000000046B000-memory.dmp

Filesize
428KB

Download
memory/2424-147-0x0000000000400000-0x000000000046B000-memory.dmp

Filesize
428KB

Download
memory/2424-148-0x0000000000400000-0x000000000046B000-memory.dmp

Filesize
428KB

Download
memory/2424-149-0x0000000000400000-0x000000000046B000-memory.dmp

Filesize
428KB

Download
memory/2424-150-0x0000000000400000-0x000000000046B000-memory.dmp

Filesize
428KB

Download
memory/2452-144-0x0000000000000000-mapping.dmp

Download