vidar | 2c973057cbbe0d9836f477281a06b51c6ce009c5ac7683f4255743e7d01ca9ca

Analysis

max time kernel
117s
max time network
119s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
20/01/2025, 16:43

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General

Target

kw8fwzf055hq2bo1s8mhd43v.exe
Size

9.8MB
MD5

2a7ec240fa5e25c92b2b78c4f1002ea0
SHA1

bca1465b8bafa5fe58d96d4289356d40c3d44155
SHA256

2c973057cbbe0d9836f477281a06b51c6ce009c5ac7683f4255743e7d01ca9ca
SHA512

dba36379cd0532301193b25ffc4c9b74406efc08ca2d2ce0fec06c115abdde2ab0409bfda1f8bf85ce50764a59503ab0d5b1efbbd641b4caec1dde910d220df3
SSDEEP

98304:D2FemCZvjc2SdS7Q+6qfx0Suals9I/f0E7zs/Ym6lQCpR2RJncpl2:6FeppPfxLsQf/7zLzVpWnQ2

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 776 set thread context of 580	776	kw8fwzf055hq2bo1s8mhd43v.exe	31

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	kw8fwzf055hq2bo1s8mhd43v.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	BitLockerToGo.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 776 wrote to memory of 580	776	kw8fwzf055hq2bo1s8mhd43v.exe	31
PID 776 wrote to memory of 580	776	kw8fwzf055hq2bo1s8mhd43v.exe	31
PID 776 wrote to memory of 580	776	kw8fwzf055hq2bo1s8mhd43v.exe	31
PID 776 wrote to memory of 580	776	kw8fwzf055hq2bo1s8mhd43v.exe	31
PID 776 wrote to memory of 580	776	kw8fwzf055hq2bo1s8mhd43v.exe	31
PID 776 wrote to memory of 580	776	kw8fwzf055hq2bo1s8mhd43v.exe	31
PID 776 wrote to memory of 580	776	kw8fwzf055hq2bo1s8mhd43v.exe	31
PID 776 wrote to memory of 580	776	kw8fwzf055hq2bo1s8mhd43v.exe	31
PID 776 wrote to memory of 580	776	kw8fwzf055hq2bo1s8mhd43v.exe	31
PID 776 wrote to memory of 580	776	kw8fwzf055hq2bo1s8mhd43v.exe	31
PID 776 wrote to memory of 580	776	kw8fwzf055hq2bo1s8mhd43v.exe	31
PID 776 wrote to memory of 580	776	kw8fwzf055hq2bo1s8mhd43v.exe	31

C:\Users\Admin\AppData\Local\Temp\kw8fwzf055hq2bo1s8mhd43v.exe
"C:\Users\Admin\AppData\Local\Temp\kw8fwzf055hq2bo1s8mhd43v.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:776
- C:\Windows\BitLockerDiscoveryVolumeContents\BitLockerToGo.exe
  "C:\Windows\BitLockerDiscoveryVolumeContents\BitLockerToGo.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:580

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\Temp\Cab4BC2.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
C:\Users\Admin\AppData\Local\Temp\Tar4BF3.tmp

Filesize
181KB

MD5
4ea6026cf93ec6338144661bf1202cd1

SHA1
a1dec9044f750ad887935a01430bf49322fbdcb7

SHA256
8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8

SHA512
6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

Download Submit
memory/580-0-0x0000000000400000-0x0000000000460000-memory.dmp

Filesize
384KB

Download
memory/580-1-0x0000000000400000-0x0000000000460000-memory.dmp

Filesize
384KB

Download
memory/580-2-0x0000000000400000-0x0000000000460000-memory.dmp

Filesize
384KB

Download
memory/580-110-0x0000000000400000-0x0000000000460000-memory.dmp

Filesize
384KB

Download