Analysis

  • max time kernel
    44s
  • max time network
    58s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    18-02-2023 19:46

General

  • Target

    Setup.exe

  • Size

    761.7MB

  • MD5

    260fa7a23b5875193251072ae72c9609

  • SHA1

    1b8dab7b8d6eab04d351c6bcafbed8fb5dceb427

  • SHA256

    e29f85b21d086505a82c69fd9f15f1490d92967655dda0081af7ba0bdafcc7f6

  • SHA512

    a7388d6673439a3f172cc472c85b911d02722778af7d16552efb82f0a0bfcaba54fcb23f216febbd646d392637c2a2c6ab4bc109c1e9afa1897004423f3d70b4

  • SSDEEP

    6144:r4lJdLRhaREge3pncR8NeJu4IPn23VZakyL6RBSV35cI5sfC7bQGa+eDJF5qMkWr:r45VhP33pnZbP23mKSV3Cw7/eLLx39

Malware Config

Extracted

Family

vidar

Version

2.5

Botnet

408

Attributes
  • profile_id

    408

Signatures

  • Vidar

    Vidar is an infostealer based on Arkei stealer.

  • Downloads MZ/PE file
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 4 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • UPX packed file 4 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Accesses 2FA software files, possible credential harvesting 2 TTPs
  • Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
  • Suspicious use of SetThreadContext 1 IoCs
  • Checks processor information in registry 2 TTPs 2 IoCs

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

  • Delays execution with timeout.exe 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of WriteProcessMemory 27 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Setup.exe
    "C:\Users\Admin\AppData\Local\Temp\Setup.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1096
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe"
      2⤵
      • Loads dropped DLL
      • Checks processor information in registry
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:1352
      • C:\ProgramData\63378835956037384779.exe
        "C:\ProgramData\63378835956037384779.exe"
        3⤵
        • Executes dropped EXE
        PID:1624
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /c timeout /t 6 & del /f /q "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe" & exit
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:532
        • C:\Windows\SysWOW64\timeout.exe
          timeout /t 6
          4⤵
          • Delays execution with timeout.exe
          PID:1996

Network

MITRE ATT&CK Matrix ATT&CK v6

Credential Access

Credentials in Files

3
T1081

Discovery

Query Registry

1
T1012

System Information Discovery

1
T1082

Collection

Data from Local System

3
T1005

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\ProgramData\63378835956037384779.exe
    Filesize

    4.3MB

    MD5

    f06e17d17d246bfaef09b9b708a75199

    SHA1

    6ebc97b2c5cd41cd7d33e078c0bbd44ad4e6dcff

    SHA256

    f9bedce60defebfe9e51c0a1d3c6ba5f1ef8296f3f256a58989a40a4d71bcef7

    SHA512

    b683dd6f95f3e4d97466aa5ce726c6f19c663a5a70985579041454bfe1a3229039785bd3c50a58aed553aa233fa2e7528927b5bc914cde1eda3d3e55e5479d48

  • \ProgramData\63378835956037384779.exe
    Filesize

    4.3MB

    MD5

    f06e17d17d246bfaef09b9b708a75199

    SHA1

    6ebc97b2c5cd41cd7d33e078c0bbd44ad4e6dcff

    SHA256

    f9bedce60defebfe9e51c0a1d3c6ba5f1ef8296f3f256a58989a40a4d71bcef7

    SHA512

    b683dd6f95f3e4d97466aa5ce726c6f19c663a5a70985579041454bfe1a3229039785bd3c50a58aed553aa233fa2e7528927b5bc914cde1eda3d3e55e5479d48

  • \ProgramData\63378835956037384779.exe
    Filesize

    4.3MB

    MD5

    f06e17d17d246bfaef09b9b708a75199

    SHA1

    6ebc97b2c5cd41cd7d33e078c0bbd44ad4e6dcff

    SHA256

    f9bedce60defebfe9e51c0a1d3c6ba5f1ef8296f3f256a58989a40a4d71bcef7

    SHA512

    b683dd6f95f3e4d97466aa5ce726c6f19c663a5a70985579041454bfe1a3229039785bd3c50a58aed553aa233fa2e7528927b5bc914cde1eda3d3e55e5479d48

  • \ProgramData\mozglue.dll
    Filesize

    593KB

    MD5

    c8fd9be83bc728cc04beffafc2907fe9

    SHA1

    95ab9f701e0024cedfbd312bcfe4e726744c4f2e

    SHA256

    ba06a6ee0b15f5be5c4e67782eec8b521e36c107a329093ec400fe0404eb196a

    SHA512

    fbb446f4a27ef510e616caad52945d6c9cc1fd063812c41947e579ec2b54df57c6dc46237ded80fca5847f38cbe1747a6c66a13e2c8c19c664a72be35eb8b040

  • \ProgramData\nss3.dll
    Filesize

    2.0MB

    MD5

    1cc453cdf74f31e4d913ff9c10acdde2

    SHA1

    6e85eae544d6e965f15fa5c39700fa7202f3aafe

    SHA256

    ac5c92fe6c51cfa742e475215b83b3e11a4379820043263bf50d4068686c6fa5

    SHA512

    dd9ff4e06b00dc831439bab11c10e9b2ae864ea6e780d3835ea7468818f35439f352ef137da111efcdf2bb6465f6ca486719451bf6cf32c6a4420a56b1d64571

  • memory/532-94-0x0000000000000000-mapping.dmp
  • memory/1096-54-0x00000000768A1000-0x00000000768A3000-memory.dmp
    Filesize

    8KB

  • memory/1352-64-0x0000000000400000-0x0000000000472000-memory.dmp
    Filesize

    456KB

  • memory/1352-67-0x0000000051100000-0x00000000511F3000-memory.dmp
    Filesize

    972KB

  • memory/1352-66-0x0000000000400000-0x0000000000472000-memory.dmp
    Filesize

    456KB

  • memory/1352-63-0x0000000000432A3C-mapping.dmp
  • memory/1352-57-0x0000000000400000-0x0000000000472000-memory.dmp
    Filesize

    456KB

  • memory/1352-92-0x0000000053490000-0x00000000542F0000-memory.dmp
    Filesize

    14.4MB

  • memory/1352-93-0x0000000053490000-0x00000000542F0000-memory.dmp
    Filesize

    14.4MB

  • memory/1352-55-0x0000000000400000-0x0000000000472000-memory.dmp
    Filesize

    456KB

  • memory/1624-89-0x0000000000000000-mapping.dmp
  • memory/1624-91-0x0000000000B20000-0x0000000001980000-memory.dmp
    Filesize

    14.4MB

  • memory/1996-96-0x0000000000000000-mapping.dmp