Windows 7 deprecation

Windows 7 will be removed from tria.ge on 2025-03-31

Resubmissions

02/09/2023, 14:51

230902-r8cxhaea23 10

02/09/2023, 14:49

230902-r65vhadf3s 10

Analysis

  • max time kernel
    142s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230831-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230831-enlocale:en-usos:windows10-2004-x64system
  • submitted
    02/09/2023, 14:51

General

  • Target

    Grammarly Promotional Launcher.exe

  • Size

    20.4MB

  • MD5

    9ed667ef1d116c0cb1051b8001b6ea0f

  • SHA1

    cbe4fdb8847ff9b5d0aa1e0a43bb3abd28f4a875

  • SHA256

    deba2be10d757679996d33d70d37b968088ba37e1d0f86d71beb8be38c34262f

  • SHA512

    4fc726f8f2ca7f024f5db1a660a3c9dff109014cc2f56097470b317950d05956c084f2e19fb9da3d14d589444c2bb0a7a370bce8b5dc049b5d3e774994bdd4e1

  • SSDEEP

    393216:onRZwqeWLCKhc+0Uz+JD8rY5Pobe7n/k8MoeTtqLiVc4GYbJQp:CN1hxX+QrY5PAe7/kHtsii4bbJG

Malware Config

Extracted

Family

stealc

Botnet

9323114451583182971321730716

C2

http://89.23.108.122

Attributes
  • url_path

    /e510c4e87f874d68.php

rc4.plain

Signatures

  • Stealc

    Stealc is an infostealer written in C++.

  • Downloads MZ/PE file
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Loads dropped DLL 2 IoCs
  • Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
  • Enumerates connected drives 3 TTPs 1 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Checks processor information in registry 2 TTPs 2 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 16 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Grammarly Promotional Launcher.exe
    "C:\Users\Admin\AppData\Local\Temp\Grammarly Promotional Launcher.exe"
    1⤵
    • Checks computer location settings
    • Enumerates connected drives
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:1884
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -NoProfile -enc UwB0AGEAcgB0AC0AUwBsAGUAZQBwACAALQBzACAAMQAwAA==
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2144
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"
      2⤵
        PID:2972
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
        "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"
        2⤵
        • Loads dropped DLL
        • Checks processor information in registry
        • Suspicious behavior: EnumeratesProcesses
        PID:4788

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\ProgramData\mozglue.dll

      Filesize

      593KB

      MD5

      c8fd9be83bc728cc04beffafc2907fe9

      SHA1

      95ab9f701e0024cedfbd312bcfe4e726744c4f2e

      SHA256

      ba06a6ee0b15f5be5c4e67782eec8b521e36c107a329093ec400fe0404eb196a

      SHA512

      fbb446f4a27ef510e616caad52945d6c9cc1fd063812c41947e579ec2b54df57c6dc46237ded80fca5847f38cbe1747a6c66a13e2c8c19c664a72be35eb8b040

    • C:\ProgramData\nss3.dll

      Filesize

      2.0MB

      MD5

      1cc453cdf74f31e4d913ff9c10acdde2

      SHA1

      6e85eae544d6e965f15fa5c39700fa7202f3aafe

      SHA256

      ac5c92fe6c51cfa742e475215b83b3e11a4379820043263bf50d4068686c6fa5

      SHA512

      dd9ff4e06b00dc831439bab11c10e9b2ae864ea6e780d3835ea7468818f35439f352ef137da111efcdf2bb6465f6ca486719451bf6cf32c6a4420a56b1d64571

    • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_llmsui1s.qim.ps1

      Filesize

      60B

      MD5

      d17fe0a3f47be24a6453e9ef58c94641

      SHA1

      6ab83620379fc69f80c0242105ddffd7d98d5d9d

      SHA256

      96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

      SHA512

      5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

    • memory/1884-20-0x00007FFC34300000-0x00007FFC34302000-memory.dmp

      Filesize

      8KB

    • memory/1884-22-0x0000000140000000-0x0000000141469000-memory.dmp

      Filesize

      20.4MB

    • memory/1884-5-0x00007FFC34210000-0x00007FFC34212000-memory.dmp

      Filesize

      8KB

    • memory/1884-6-0x00007FFC34220000-0x00007FFC34222000-memory.dmp

      Filesize

      8KB

    • memory/1884-7-0x00007FFC34230000-0x00007FFC34232000-memory.dmp

      Filesize

      8KB

    • memory/1884-0-0x00007FFC341D0000-0x00007FFC341D2000-memory.dmp

      Filesize

      8KB

    • memory/1884-9-0x00007FFC34250000-0x00007FFC34252000-memory.dmp

      Filesize

      8KB

    • memory/1884-10-0x00007FFC34260000-0x00007FFC34262000-memory.dmp

      Filesize

      8KB

    • memory/1884-11-0x00007FFC34270000-0x00007FFC34272000-memory.dmp

      Filesize

      8KB

    • memory/1884-13-0x00007FFC34290000-0x00007FFC34292000-memory.dmp

      Filesize

      8KB

    • memory/1884-12-0x00007FFC34280000-0x00007FFC34282000-memory.dmp

      Filesize

      8KB

    • memory/1884-15-0x00007FFC342B0000-0x00007FFC342B2000-memory.dmp

      Filesize

      8KB

    • memory/1884-14-0x00007FFC342A0000-0x00007FFC342A2000-memory.dmp

      Filesize

      8KB

    • memory/1884-16-0x00007FFC342C0000-0x00007FFC342C2000-memory.dmp

      Filesize

      8KB

    • memory/1884-17-0x00007FFC342D0000-0x00007FFC342D2000-memory.dmp

      Filesize

      8KB

    • memory/1884-18-0x00007FFC342E0000-0x00007FFC342E2000-memory.dmp

      Filesize

      8KB

    • memory/1884-19-0x00007FFC342F0000-0x00007FFC342F2000-memory.dmp

      Filesize

      8KB

    • memory/1884-1-0x0000000140000000-0x0000000141469000-memory.dmp

      Filesize

      20.4MB

    • memory/1884-3-0x00007FFC341F0000-0x00007FFC341F2000-memory.dmp

      Filesize

      8KB

    • memory/1884-21-0x0000000140000000-0x0000000141469000-memory.dmp

      Filesize

      20.4MB

    • memory/1884-8-0x00007FFC34240000-0x00007FFC34242000-memory.dmp

      Filesize

      8KB

    • memory/1884-4-0x00007FFC34200000-0x00007FFC34202000-memory.dmp

      Filesize

      8KB

    • memory/1884-2-0x00007FFC341E0000-0x00007FFC341E2000-memory.dmp

      Filesize

      8KB

    • memory/1884-46-0x0000000140000000-0x0000000141469000-memory.dmp

      Filesize

      20.4MB

    • memory/2144-29-0x0000023DEC8F0000-0x0000023DEC912000-memory.dmp

      Filesize

      136KB

    • memory/2144-36-0x00007FFC152B0000-0x00007FFC15D71000-memory.dmp

      Filesize

      10.8MB

    • memory/2144-37-0x0000023DEC930000-0x0000023DEC940000-memory.dmp

      Filesize

      64KB

    • memory/2144-38-0x0000023DEC930000-0x0000023DEC940000-memory.dmp

      Filesize

      64KB

    • memory/2144-41-0x00007FFC152B0000-0x00007FFC15D71000-memory.dmp

      Filesize

      10.8MB

    • memory/2144-34-0x0000023DEC930000-0x0000023DEC940000-memory.dmp

      Filesize

      64KB

    • memory/2144-35-0x0000023DEC930000-0x0000023DEC940000-memory.dmp

      Filesize

      64KB

    • memory/2144-33-0x00007FFC152B0000-0x00007FFC15D71000-memory.dmp

      Filesize

      10.8MB

    • memory/4788-42-0x0000000000400000-0x000000000062D000-memory.dmp

      Filesize

      2.2MB

    • memory/4788-47-0x0000000000400000-0x000000000062D000-memory.dmp

      Filesize

      2.2MB

    • memory/4788-48-0x0000000061E00000-0x0000000061EF3000-memory.dmp

      Filesize

      972KB

    • memory/4788-45-0x0000000000400000-0x000000000062D000-memory.dmp

      Filesize

      2.2MB

    • memory/4788-113-0x0000000000400000-0x000000000062D000-memory.dmp

      Filesize

      2.2MB