vidar | 15f08b0d3b2c8de41d8f513a0ef0e47e997b3c566d77da5086c60532bde5e123

Analysis

max time kernel
139s
max time network
149s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
16-02-2025 00:52

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General

Target

main.exe
Size

5.5MB
MD5

eecbb2f1515cb2641fbe0bff5ab58666
SHA1

10872a62432810af4dd554266e45568e3b2c2c69
SHA256

15f08b0d3b2c8de41d8f513a0ef0e47e997b3c566d77da5086c60532bde5e123
SHA512

faf2a97e5a6e464080757d919e640831e199f80c93bd23c0f3e60c289d4d01d464bb6608a94544c4debca57b7040c9a85a4690f95c002544d6e9741e374c9d60
SSDEEP

49152:2t3JU3uessKtr7V9hU+tM8B1+nC0RS3HGzT+ZKFVY3W409PXqYR6ZIsUFP52nMm4:29JU+cKtr7V9ekM7S70PR+Cud3vx

Score

10^/10

vidar fc0stn discovery stealer

Malware Config

Extracted

Family

vidar

Botnet

fc0stn

https://t.me/w0ctzn

https://steamcommunity.com/profiles/76561199817305251

Attributes

user_agent
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:131.0) Gecko/20100101 Firefox/131.0

Signatures

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

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1284 set thread context of 2728	1284	main.exe	30

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	BitLockerToGo.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	main.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 1284 wrote to memory of 2728	1284	main.exe	30
PID 1284 wrote to memory of 2728	1284	main.exe	30
PID 1284 wrote to memory of 2728	1284	main.exe	30
PID 1284 wrote to memory of 2728	1284	main.exe	30
PID 1284 wrote to memory of 2728	1284	main.exe	30
PID 1284 wrote to memory of 2728	1284	main.exe	30
PID 1284 wrote to memory of 2728	1284	main.exe	30
PID 1284 wrote to memory of 2728	1284	main.exe	30
PID 1284 wrote to memory of 2728	1284	main.exe	30
PID 1284 wrote to memory of 2728	1284	main.exe	30
PID 1284 wrote to memory of 2728	1284	main.exe	30
PID 1284 wrote to memory of 2728	1284	main.exe	30

C:\Users\Admin\AppData\Local\Temp\main.exe
"C:\Users\Admin\AppData\Local\Temp\main.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1284
- C:\Windows\BitLockerDiscoveryVolumeContents\BitLockerToGo.exe
  "C:\Windows\BitLockerDiscoveryVolumeContents\BitLockerToGo.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2728

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\WCATT3E5\76561199817305251[1].htm

Filesize
34KB

MD5
48a9ff05d45604dcee73bec86c02f029

SHA1
bb680bbc497b845c0333f1e0a92be2d83843dc07

SHA256
7318ae0472850995b38713571d2526fb5b508e7ab5164714e77671dd8355f469

SHA512
3fa5f8d85665d4f6c8dd85edd49a8dcb7022fcc09bee2fae8c675e7ae968a61a64475b8698aabbf4646752ef5f6d6a6ffe34a65febb131ff0c53133fb21e8bda

Download Submit
C:\Users\Admin\AppData\Local\Temp\Cab3B1F.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
C:\Users\Admin\AppData\Local\Temp\Tar3B31.tmp

Filesize
181KB

MD5
4ea6026cf93ec6338144661bf1202cd1

SHA1
a1dec9044f750ad887935a01430bf49322fbdcb7

SHA256
8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8

SHA512
6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

Download Submit
memory/2728-0-0x0000000000400000-0x0000000000460000-memory.dmp

Filesize
384KB

Download
memory/2728-1-0x0000000000400000-0x0000000000460000-memory.dmp

Filesize
384KB

Download
memory/2728-2-0x0000000000400000-0x0000000000460000-memory.dmp

Filesize
384KB

Download
memory/2728-3-0x0000000000400000-0x0000000000460000-memory.dmp

Filesize
384KB

Download