vidar | c904bc128478ddeb180655f7bf75014a9af5daa6d157e610b2565764a8503caa

General

Target

2025-01-21_84f475322583d100b54b10b06ba85fe1_frostygoop_poet-rat_snatch.exe
Size

5.9MB
MD5

84f475322583d100b54b10b06ba85fe1
SHA1

1c2256390adbb01d9c6237dd86bd59feebade65a
SHA256

c904bc128478ddeb180655f7bf75014a9af5daa6d157e610b2565764a8503caa
SHA512

d39949f9cbcc4900b9084f097b3351bfe7c656c6b723b1c85312349d5c724259d80fe1b20d62f2388cd36496041003439bef8c5fcc8326a467535cc03c648962
SSDEEP

49152:eoNrBMzhZyXLhpVWGaTkuu6LS95HKyUJTjFwQgLlON2WwwOFnvVJiX76emx4La9U:ecMt4X3VWGe1SiJog2WWsSE

Score

10^/10

vidar fc0stn discovery stealer

Malware Config

Extracted

Family

vidar

Botnet

fc0stn

C2

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

Detect Vidar Stealer 3 IoCs

stealer

resource	yara_rule
behavioral1/memory/2780-1-0x0000000000400000-0x0000000000422000-memory.dmp	family_vidar_v7
behavioral1/memory/2780-2-0x0000000000400000-0x0000000000422000-memory.dmp	family_vidar_v7
behavioral1/memory/2780-110-0x0000000000400000-0x0000000000422000-memory.dmp	family_vidar_v7

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 2324 set thread context of 2780	2324	2025-01-21_84f475322583d100b54b10b06ba85fe1_frostygoop_poet-rat_snatch.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	2025-01-21_84f475322583d100b54b10b06ba85fe1_frostygoop_poet-rat_snatch.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	BitLockerToGo.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2324 wrote to memory of 2780	2324	2025-01-21_84f475322583d100b54b10b06ba85fe1_frostygoop_poet-rat_snatch.exe	30
PID 2324 wrote to memory of 2780	2324	2025-01-21_84f475322583d100b54b10b06ba85fe1_frostygoop_poet-rat_snatch.exe	30
PID 2324 wrote to memory of 2780	2324	2025-01-21_84f475322583d100b54b10b06ba85fe1_frostygoop_poet-rat_snatch.exe	30
PID 2324 wrote to memory of 2780	2324	2025-01-21_84f475322583d100b54b10b06ba85fe1_frostygoop_poet-rat_snatch.exe	30
PID 2324 wrote to memory of 2780	2324	2025-01-21_84f475322583d100b54b10b06ba85fe1_frostygoop_poet-rat_snatch.exe	30
PID 2324 wrote to memory of 2780	2324	2025-01-21_84f475322583d100b54b10b06ba85fe1_frostygoop_poet-rat_snatch.exe	30
PID 2324 wrote to memory of 2780	2324	2025-01-21_84f475322583d100b54b10b06ba85fe1_frostygoop_poet-rat_snatch.exe	30
PID 2324 wrote to memory of 2780	2324	2025-01-21_84f475322583d100b54b10b06ba85fe1_frostygoop_poet-rat_snatch.exe	30
PID 2324 wrote to memory of 2780	2324	2025-01-21_84f475322583d100b54b10b06ba85fe1_frostygoop_poet-rat_snatch.exe	30
PID 2324 wrote to memory of 2780	2324	2025-01-21_84f475322583d100b54b10b06ba85fe1_frostygoop_poet-rat_snatch.exe	30
PID 2324 wrote to memory of 2780	2324	2025-01-21_84f475322583d100b54b10b06ba85fe1_frostygoop_poet-rat_snatch.exe	30
PID 2324 wrote to memory of 2780	2324	2025-01-21_84f475322583d100b54b10b06ba85fe1_frostygoop_poet-rat_snatch.exe	30

C:\Users\Admin\AppData\Local\Temp\2025-01-21_84f475322583d100b54b10b06ba85fe1_frostygoop_poet-rat_snatch.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-21_84f475322583d100b54b10b06ba85fe1_frostygoop_poet-rat_snatch.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2324
- C:\Windows\BitLockerDiscoveryVolumeContents\BitLockerToGo.exe
  "C:\Windows\BitLockerDiscoveryVolumeContents\BitLockerToGo.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2780

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\CabAFB.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
C:\Users\Admin\AppData\Local\Temp\TarB1D.tmp

Filesize
181KB

MD5
4ea6026cf93ec6338144661bf1202cd1

SHA1
a1dec9044f750ad887935a01430bf49322fbdcb7

SHA256
8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8

SHA512
6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

Download Submit
memory/2780-0-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/2780-1-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/2780-2-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/2780-110-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download

Analysis

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