vidar | 8b34e6283a4e30009a0ad792723817cfb0d5cdbbbe119948aa6e887bd59e1620

Resubmissions

11-12-2024 17:42

241211-v97eaaspes 10

11-12-2024 17:40

01-10-2024 21:39

29-08-2024 12:54

17-08-2024 17:42

17-08-2024 09:57

Analysis

max time kernel
121s
max time network
132s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
11-12-2024 17:40

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General

Target

66bddfcb52736_vidar.exe
Size

190KB
MD5

fedb687ed23f77925b35623027f799bb
SHA1

7f27d0290ecc2c81bf2b2d0fa1026f54fd687c81
SHA256

325396d5ffca8546730b9a56c2d0ed99238d48b5e1c3c49e7d027505ea13b8d1
SHA512

6d1fa39560f4d7ca57905bc57d615acf96b1ef69ca2a4d7c0353278e8d4466298ed87f514463c49d671cb0e3b6a269a78636a10a1e463dba5c83fe067dc5df18
SSDEEP

3072:XqsEJybpRHuJKKBardRei4UGvI96/ZO6RAkeOCeP9sZy28se:XqsMyNRHuKikUi42KZO6PffmZy2d

Score

10^/10

vidar 877956da9963e0825aa43a159a358f24 credential_access discovery spyware stealer

Malware Config

Extracted

Family

vidar

Version

10.7

Botnet

877956da9963e0825aa43a159a358f24

https://steamcommunity.com/profiles/76561199751190313

https://t.me/pech0nk

Attributes

user_agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/127.0.0.0 Safari/537.36

Signatures

Detect Vidar Stealer 10 IoCs

stealer

resource	yara_rule
behavioral1/memory/2672-12-0x0000000000400000-0x0000000000643000-memory.dmp	family_vidar_v7
behavioral1/memory/2672-20-0x0000000000400000-0x0000000000643000-memory.dmp	family_vidar_v7
behavioral1/memory/2672-18-0x0000000000400000-0x0000000000643000-memory.dmp	family_vidar_v7
behavioral1/memory/2672-17-0x0000000000400000-0x0000000000643000-memory.dmp	family_vidar_v7
behavioral1/memory/2672-22-0x0000000000400000-0x0000000000643000-memory.dmp	family_vidar_v7
behavioral1/memory/2672-11-0x0000000000400000-0x0000000000643000-memory.dmp	family_vidar_v7
behavioral1/memory/2672-10-0x0000000000400000-0x0000000000643000-memory.dmp	family_vidar_v7
behavioral1/memory/2672-58-0x0000000000400000-0x0000000000643000-memory.dmp	family_vidar_v7
behavioral1/memory/2672-59-0x0000000000400000-0x0000000000643000-memory.dmp	family_vidar_v7
behavioral1/memory/2672-60-0x0000000000400000-0x0000000000643000-memory.dmp	family_vidar_v7

Vidar
Vidar is an infostealer based on Arkei stealer.
stealer vidar
Vidar family
vidar
Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001
Unsecured Credentials: Credentials In Files 1 TTPs
Steal credentials from unsecured files.
credential_access stealer

Credentials In Files
T1552.001
Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1868 set thread context of 2672	1868	66bddfcb52736_vidar.exe	30

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 4 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	66bddfcb52736_vidar.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegAsm.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	timeout.exe

Checks processor information in registry 2 TTPs 2 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	RegAsm.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	RegAsm.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
2972	timeout.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
2672	RegAsm.exe
2672	RegAsm.exe
2672	RegAsm.exe

Suspicious use of WriteProcessMemory 22 IoCs

description	pid	Process	procid_target
PID 1868 wrote to memory of 2672	1868	66bddfcb52736_vidar.exe	30
PID 1868 wrote to memory of 2672	1868	66bddfcb52736_vidar.exe	30
PID 1868 wrote to memory of 2672	1868	66bddfcb52736_vidar.exe	30
PID 1868 wrote to memory of 2672	1868	66bddfcb52736_vidar.exe	30
PID 1868 wrote to memory of 2672	1868	66bddfcb52736_vidar.exe	30
PID 1868 wrote to memory of 2672	1868	66bddfcb52736_vidar.exe	30
PID 1868 wrote to memory of 2672	1868	66bddfcb52736_vidar.exe	30
PID 1868 wrote to memory of 2672	1868	66bddfcb52736_vidar.exe	30
PID 1868 wrote to memory of 2672	1868	66bddfcb52736_vidar.exe	30
PID 1868 wrote to memory of 2672	1868	66bddfcb52736_vidar.exe	30
PID 1868 wrote to memory of 2672	1868	66bddfcb52736_vidar.exe	30
PID 1868 wrote to memory of 2672	1868	66bddfcb52736_vidar.exe	30
PID 1868 wrote to memory of 2672	1868	66bddfcb52736_vidar.exe	30
PID 1868 wrote to memory of 2672	1868	66bddfcb52736_vidar.exe	30
PID 2672 wrote to memory of 2096	2672	RegAsm.exe	33
PID 2672 wrote to memory of 2096	2672	RegAsm.exe	33
PID 2672 wrote to memory of 2096	2672	RegAsm.exe	33
PID 2672 wrote to memory of 2096	2672	RegAsm.exe	33
PID 2096 wrote to memory of 2972	2096	cmd.exe	35
PID 2096 wrote to memory of 2972	2096	cmd.exe	35
PID 2096 wrote to memory of 2972	2096	cmd.exe	35
PID 2096 wrote to memory of 2972	2096	cmd.exe	35

C:\Users\Admin\AppData\Local\Temp\66bddfcb52736_vidar.exe
"C:\Users\Admin\AppData\Local\Temp\66bddfcb52736_vidar.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1868
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:2672
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\system32\cmd.exe" /c timeout /t 10 & del /f /q "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe" & rd /s /q "C:\ProgramData\EBAEBFIIECBG" & exit
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2096
  - - C:\Windows\SysWOW64\timeout.exe
      timeout /t 10
      4⤵
      System Location Discovery: System Language Discovery
      Delays execution with timeout.exe
      PID:2972

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\Cab584F.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
C:\Users\Admin\AppData\Local\Temp\Tar5872.tmp

Filesize
181KB

MD5
4ea6026cf93ec6338144661bf1202cd1

SHA1
a1dec9044f750ad887935a01430bf49322fbdcb7

SHA256
8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8

SHA512
6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

Download Submit
memory/1868-0-0x00000000746AE000-0x00000000746AF000-memory.dmp

Filesize
4KB

Download
memory/1868-1-0x0000000000C70000-0x0000000000CA6000-memory.dmp

Filesize
216KB

Download
memory/1868-21-0x00000000746A0000-0x0000000074D8E000-memory.dmp

Filesize
6.9MB

Download
memory/2672-22-0x0000000000400000-0x0000000000643000-memory.dmp

Filesize
2.3MB

Download
memory/2672-8-0x0000000000400000-0x0000000000643000-memory.dmp

Filesize
2.3MB

Download
memory/2672-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2672-18-0x0000000000400000-0x0000000000643000-memory.dmp

Filesize
2.3MB

Download
memory/2672-20-0x0000000000400000-0x0000000000643000-memory.dmp

Filesize
2.3MB

Download
memory/2672-11-0x0000000000400000-0x0000000000643000-memory.dmp

Filesize
2.3MB

Download
memory/2672-10-0x0000000000400000-0x0000000000643000-memory.dmp

Filesize
2.3MB

Download
memory/2672-17-0x0000000000400000-0x0000000000643000-memory.dmp

Filesize
2.3MB

Download
memory/2672-6-0x0000000000400000-0x0000000000643000-memory.dmp

Filesize
2.3MB

Download
memory/2672-12-0x0000000000400000-0x0000000000643000-memory.dmp

Filesize
2.3MB

Download
memory/2672-4-0x0000000000400000-0x0000000000643000-memory.dmp

Filesize
2.3MB

Download
memory/2672-58-0x0000000000400000-0x0000000000643000-memory.dmp

Filesize
2.3MB

Download
memory/2672-59-0x0000000000400000-0x0000000000643000-memory.dmp

Filesize
2.3MB

Download
memory/2672-60-0x0000000000400000-0x0000000000643000-memory.dmp

Filesize
2.3MB

Download