vidar | c9ed91a8bbdcccda38901f1a70590c8ecb9c813109922b3465471d678cc20868

Analysis

max time kernel
123s
max time network
124s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
03-02-2025 12:47

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General

Target

fm.exe
Size

4.9MB
MD5

a6974982ceb1a656f6db988828842d87
SHA1

9fbd537a58f1a2f9ee78b4278413ba091ca65cfa
SHA256

c9ed91a8bbdcccda38901f1a70590c8ecb9c813109922b3465471d678cc20868
SHA512

6facd84a6d4622b1c435bf9f77dd7bf4fb5fef222e97e58a62961f571654ad45c0a287195827567ffb17bf26746097577f19638286ac92af0eaf4c9398b82a83
SSDEEP

49152:0T8pWSX5MEq9/DD9dnEtVv2+QVGeWX0iZsml4eGMrEqAtuShOuInfmuh9cHlV/2F:0aWcHiDDjKV9e233y0ZwfK

Score

10^/10

vidar discovery stealer

Malware Config

Extracted

Family

vidar

https://t.me/m08mbk

https://steamcommunity.com/profiles/76561199820567237

Attributes

user_agent
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:136.0) Gecko/20100101 Firefox/136.0

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 1756 set thread context of 988	1756	fm.exe	29

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

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 1756 wrote to memory of 988	1756	fm.exe	29
PID 1756 wrote to memory of 988	1756	fm.exe	29
PID 1756 wrote to memory of 988	1756	fm.exe	29
PID 1756 wrote to memory of 988	1756	fm.exe	29
PID 1756 wrote to memory of 988	1756	fm.exe	29
PID 1756 wrote to memory of 988	1756	fm.exe	29
PID 1756 wrote to memory of 988	1756	fm.exe	29
PID 1756 wrote to memory of 988	1756	fm.exe	29
PID 1756 wrote to memory of 988	1756	fm.exe	29
PID 1756 wrote to memory of 988	1756	fm.exe	29
PID 1756 wrote to memory of 988	1756	fm.exe	29
PID 1756 wrote to memory of 988	1756	fm.exe	29

C:\Users\Admin\AppData\Local\Temp\fm.exe
"C:\Users\Admin\AppData\Local\Temp\fm.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1756
- C:\Windows\BitLockerDiscoveryVolumeContents\BitLockerToGo.exe
  "C:\Windows\BitLockerDiscoveryVolumeContents\BitLockerToGo.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:988

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\40WV1DY9\76561199820567237[1].htm

Filesize
34KB

MD5
9c4199f03dfc22703886fcbd88fd617c

SHA1
4105e634db0cbab3bcda02437f283be6f45f9de4

SHA256
c9e6c6ddd3ecc716cca55174ab243aa63ae830b8ecc28aea9a6833e4b1e2b732

SHA512
b507b6e471a2d77870b79feb515b7996623f7363bea5ee253a8a3081b0770841ffb2f9ac64c34f5ff28dadc9b48b89b5eb69e39a02ab67d065201023eb1f9261

Download Submit
C:\Users\Admin\AppData\Local\Temp\Cab8CA8.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
C:\Users\Admin\AppData\Local\Temp\Tar8CBA.tmp

Filesize
181KB

MD5
4ea6026cf93ec6338144661bf1202cd1

SHA1
a1dec9044f750ad887935a01430bf49322fbdcb7

SHA256
8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8

SHA512
6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

Download Submit
memory/988-0-0x0000000000400000-0x000000000044B000-memory.dmp

Filesize
300KB

Download
memory/988-1-0x0000000000400000-0x000000000044B000-memory.dmp

Filesize
300KB

Download
memory/988-2-0x0000000000400000-0x000000000044B000-memory.dmp

Filesize
300KB

Download
memory/988-28-0x0000000000400000-0x000000000044B000-memory.dmp

Filesize
300KB

Download