Overview

overview

10

Static

static

3

FL_RunSetup.exe

windows10-ltsc_2021-x64

10

FL_RunSetup.exe

windows11-21h2-x64

10

$PLUGINSDI...ls.dll

windows10-ltsc_2021-x64

3

$PLUGINSDI...ls.dll

windows11-21h2-x64

3

$PLUGINSDI...em.dll

windows10-ltsc_2021-x64

3

$PLUGINSDI...em.dll

windows11-21h2-x64

3

Installer.exe

windows10-ltsc_2021-x64

10

Installer.exe

windows11-21h2-x64

10

LICENSES.c...m.html

windows10-ltsc_2021-x64

3

LICENSES.c...m.html

windows11-21h2-x64

3

d3dcompiler_47.dll

windows10-ltsc_2021-x64

1

d3dcompiler_47.dll

windows11-21h2-x64

1

ffmpeg.dll

windows10-ltsc_2021-x64

1

ffmpeg.dll

windows11-21h2-x64

1

libEGL.dll

windows10-ltsc_2021-x64

1

libEGL.dll

windows11-21h2-x64

1

libGLESv2.dll

windows10-ltsc_2021-x64

1

libGLESv2.dll

windows11-21h2-x64

1

resources/app/main.js

windows10-ltsc_2021-x64

3

resources/app/main.js

windows11-21h2-x64

3

resources/elevate.exe

windows10-ltsc_2021-x64

3

resources/elevate.exe

windows11-21h2-x64

3

vk_swiftshader.dll

windows10-ltsc_2021-x64

1

vk_swiftshader.dll

windows11-21h2-x64

1

vulkan-1.dll

windows10-ltsc_2021-x64

1

vulkan-1.dll

windows11-21h2-x64

1

$PLUGINSDI...7z.dll

windows10-ltsc_2021-x64

3

$PLUGINSDI...7z.dll

windows11-21h2-x64

3

tools/Cont...92.pkg

windows10-ltsc_2021-x64

3

tools/Cont...92.pkg

windows11-21h2-x64

3

tools/Cont...68.pkg

windows10-ltsc_2021-x64

3

tools/Cont...68.pkg

windows11-21h2-x64

3

Sharing

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General

  • Target
    FLSetup_x32_x64.zip
  • Size 118.0MB
  • Sample260813-y2eabafj7s
  • SHA256 d36cc338575e0149c52893fabc3ad9c3e8581b664d97286b1b31c31040e55c11
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
vidar5fdb6df778631818165110294c620890defense_evasiondiscoveryexecutionstealertrojan

Malware Config

Extracted

Family

  • vidar

Version

  • 2.9

Botnet

  • 5fdb6df778631818165110294c620890

C2

  • https://65.109.35.163

  • https://telegram.me/j0tt0s

  • https://steamcommunity.com/profiles/76561198660175584

Attributes
  • user_agent

    Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 Safari/537.36 Edg/144.0.0.0

Targets

    • Target
      FL_RunSetup.exe
    • Size 69.7MB
    • SHA256 75f54ab104fa2c29635dd126eb23ea6aafb01a1e4cb69f623cfd6be3c8e09aef
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    10/10
    5fdb6df778631818165110294c620890defense_evasiondiscoveryexecutionvidarstealertrojan

    • Family: Vidar

      Vidar is an infostealer based on Arkei stealer.

      stealervidar

    • Windows security bypass

      defense_evasiontrojan

    • Command and Scripting Interpreter: PowerShell

      Run Powershell and hide display window.

      execution

    • Downloads MZ/PE file

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Executes dropped EXE

    • Loads dropped DLL

    • Prevents Microsoft Defender from scanning certain paths by adding an exclusion.

      Uses the Powershell Add-MpPreference cmdlet to exclude paths from being scanned by Microsoft Defender.

      defense_evasion

    • System Binary Proxy Execution: Rundll32

      Abuse Rundll32 to proxy execution of malicious code.

      defense_evasion

    • Hide Artifacts: Hidden Window

      Windows that would typically be displayed when an application carries out an operation can be hidden.

      defense_evasion

    • Obfuscated Files or Information: Command Obfuscation

      Adversaries may obfuscate content during command execution to impede detection.

      defense_evasion

    • Executes a VBScript file via the Windows Script Host.

      execution

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    behavioral1behavioral2
    • Target
      $PLUGINSDIR/StdUtils.dll
    • Size 100KB
    • SHA256 b72e9013a6204e9f01076dc38dabbf30870d44dfc66962adbf73619d4331601e
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    3/10
    discovery
    behavioral3behavioral4
    • Target
      $PLUGINSDIR/System.dll
    • Size 12KB
    • SHA256 3eb38ae99653a7dbc724132ee240f6e5c4af4bfe7c01d31d23faf373f9f2eaca
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    3/10
    discovery
    behavioral5behavioral6
    • Target
      Installer.exe
    • Size 168.1MB
    • SHA256 f1fdb3e045eff53d860bb757980dd194b392910fc8a9b640bae912388cda9c4c
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    10/10
    5fdb6df778631818165110294c620890defense_evasionexecutionvidarstealertrojan

    • Family: Vidar

      Vidar is an infostealer based on Arkei stealer.

      stealervidar

    • Windows security bypass

      defense_evasiontrojan

    • Command and Scripting Interpreter: PowerShell

      Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

      execution

    • Command and Scripting Interpreter: PowerShell

      Run Powershell and hide display window.

      execution

    • Downloads MZ/PE file

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Executes dropped EXE

    • Prevents Microsoft Defender from scanning certain paths by adding an exclusion.

      Uses the Powershell Add-MpPreference cmdlet to exclude paths from being scanned by Microsoft Defender.

      defense_evasion

    • System Binary Proxy Execution: Rundll32

      Abuse Rundll32 to proxy execution of malicious code.

      defense_evasion

    • Hide Artifacts: Hidden Window

      Windows that would typically be displayed when an application carries out an operation can be hidden.

      defense_evasion

    • Obfuscated Files or Information: Command Obfuscation

      Adversaries may obfuscate content during command execution to impede detection.

      defense_evasion

    • Executes a VBScript file via the Windows Script Host.

      execution

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    behavioral7behavioral8
    • Target
      LICENSES.chromium.html
    • Size 8.7MB
    • SHA256 ad35e72893910d6f6ed20f4916457417af05b94ab5204c435c35f66a058d156b
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    3/10
    discovery
    behavioral10behavioral9
    • Target
      d3dcompiler_47.dll
    • Size 4.7MB
    • SHA256 7353f25dc5cf84d09894e3e0461cef0e56799adbc617fce37620ca67240b547d
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    1/10
    behavioral11behavioral12
    • Target
      ffmpeg.dll
    • Size 2.7MB
    • SHA256 11daf2bf89a3ac660533b3e487e0624668b35f45d2bd94e9b0324bce8758de60
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    1/10
    behavioral13behavioral14
    • Target
      libEGL.dll
    • Size 468KB
    • SHA256 a4336a318e8d92a47843d5fe429dc6d1ff7271d8bac189d719bc8074a128fd6e
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    1/10
    behavioral15behavioral16
    • Target
      libGLESv2.dll
    • Size 7.3MB
    • SHA256 7b0baa9e2e731716efe3e0bebf6a0bcd2d64f35d9f62b20d23acb4e098c9be36
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    1/10
    behavioral17behavioral18
    • Target
      resources/app/main.js
    • Size 561B
    • SHA256 fc0c78b036ee1453240e3d7e92d38072785bd137b2eff200375e5ce81e86ada6
    • MD5 SHA1 SHA512 TLSH
    Score
    3/10
    execution
    behavioral19behavioral20
    • Target
      resources/elevate.exe
    • Size 105KB
    • SHA256 9b1fbf0c11c520ae714af8aa9af12cfd48503eedecd7398d8992ee94d1b4dc37
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    3/10
    discovery
    behavioral21behavioral22
    • Target
      vk_swiftshader.dll
    • Size 5.1MB
    • SHA256 46afb1ed7ab1b1a679e00784b2e78cc2358cec615553699624ff77882f55787b
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    1/10
    behavioral23behavioral24
    • Target
      vulkan-1.dll
    • Size 932KB
    • SHA256 fa6b4e20eb448746e2eff9a7fde7a62585e371f3497a6a928eade0a8ce8c1a9f
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    1/10
    behavioral25behavioral26
    • Target
      $PLUGINSDIR/nsis7z.dll
    • Size 424KB
    • SHA256 b393f05e8ff919ef071181050e1873c9a776e1a0ae8329aefff7007d0cadf592
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    3/10
    discovery
    behavioral27behavioral28
    • Target
      tools/Content/config_13992.pkg
    • Size 684KB
    • SHA256 35d515ad260906a34851016d1e6530ca97574ba4cf66e68c562d2ef13efcfcaa
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    3/10
    execution
    behavioral29behavioral30
    • Target
      tools/Content/network_37968.pkg
    • Size 1.4MB
    • SHA256 150e45faf44fed4512f6bb108c407322ef87fcc33e618712d13951def09f2693
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    3/10
    execution
    behavioral31behavioral32

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

5
T1059

JavaScript

1
T1059.007

PowerShell

2
T1059.001

Visual Basic

1
T1059.005

Windows Command Shell

1
T1059.003

Persistence

Privilege Escalation

Defense Evasion

Hide Artifacts

3
T1564

File/Path Exclusions

1
T1564.012

Hidden Window

1
T1564.003

Ignore Process Interrupts

1
T1564.011

Impair Defenses

2
T1562

Disable or Modify Tools

2
T1562.001

Modify Registry

1
T1112

Obfuscated Files or Information

1
T1027

Command Obfuscation

1
T1027.010

System Binary Proxy Execution

1
T1218

Rundll32

1
T1218.011

Credential Access

Discovery

Browser Information Discovery

1
T1217

Query Registry

3
T1012

System Information Discovery

4
T1082

System Location Discovery

1
T1614

System Language Discovery

1
T1614.001

System Time Discovery

1
T1124

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Tasks

static1

Score
3/10

behavioral1

5fdb6df778631818165110294c620890defense_evasiondiscoveryexecutionvidarstealertrojan
Score
10/10

behavioral2

5fdb6df778631818165110294c620890defense_evasiondiscoveryexecutionvidarstealertrojan
Score
10/10

behavioral3

discovery
Score
3/10

behavioral4

discovery
Score
3/10

behavioral5

discovery
Score
3/10

behavioral6

discovery
Score
3/10

behavioral7

5fdb6df778631818165110294c620890defense_evasionexecutionvidarstealertrojan
Score
10/10

behavioral8

5fdb6df778631818165110294c620890defense_evasionexecutionvidarstealertrojan
Score
10/10

behavioral9

discovery
Score
3/10

behavioral10

discovery
Score
3/10

behavioral11

Score
1/10

behavioral12

Score
1/10

behavioral13

Score
1/10

behavioral14

Score
1/10

behavioral15

Score
1/10

behavioral16

Score
1/10

behavioral17

Score
1/10

behavioral18

Score
1/10

behavioral19

execution
Score
3/10

behavioral20

execution
Score
3/10

behavioral21

discovery
Score
3/10

behavioral22

discovery
Score
3/10

behavioral23

Score
1/10

behavioral24

Score
1/10

behavioral25

Score
1/10

behavioral26

Score
1/10

behavioral27

discovery
Score
3/10

behavioral28

discovery
Score
3/10

behavioral29

execution
Score
3/10

behavioral30

execution
Score
3/10

behavioral31

execution
Score
3/10

behavioral32

execution
Score
3/10