Analysis

  • max time kernel
    141s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    07-07-2022 04:43

General

  • Target

    Anwuqahpedbnnlsgekmacy.exe

  • Size

    576KB

  • MD5

    6033fc2cf6e73f5ca5cf76206d4f2232

  • SHA1

    a01fae21dfd9319f332c3cb717f8a8467514e8ce

  • SHA256

    eaa5fb40a306c308eead3848fe6b4c16c7b271ddc63a89cc876b54248f8b1d08

  • SHA512

    795df2b76dd23c09e5e90d1b5f2f4b88d1be8b44eb072001fb1bdfca210a6106a38cdafdc4df4e429f7acbbf5c8be3fe093e906280571acbf4458c9c6563233a

Malware Config

Extracted

Family

arkei

Botnet

Default

Signatures

  • Arkei

    Arkei is an infostealer written in C++.

  • suricata: ET MALWARE Base64 Encoded Stealer Config from Server - APPDATA or USERPROFILE Environment Variable M4

    suricata: ET MALWARE Base64 Encoded Stealer Config from Server - APPDATA or USERPROFILE Environment Variable M4

  • Loads dropped DLL 2 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Program crash 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of WriteProcessMemory 10 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Anwuqahpedbnnlsgekmacy.exe
    "C:\Users\Admin\AppData\Local\Temp\Anwuqahpedbnnlsgekmacy.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:916
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
      C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
      2⤵
      • Loads dropped DLL
      PID:1020
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 1020 -s 844
        3⤵
        • Program crash
        PID:2352
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1020 -ip 1020
    1⤵
      PID:4872

    Network

    MITRE ATT&CK Matrix

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\ProgramData\mozglue.dll
      Filesize

      133KB

      MD5

      8f73c08a9660691143661bf7332c3c27

      SHA1

      37fa65dd737c50fda710fdbde89e51374d0c204a

      SHA256

      3fe6b1c54b8cf28f571e0c5d6636b4069a8ab00b4f11dd842cfec00691d0c9cd

      SHA512

      0042ecf9b3571bb5eba2de893e8b2371df18f7c5a589f52ee66e4bfbaa15a5b8b7cc6a155792aaa8988528c27196896d5e82e1751c998bacea0d92395f66ad89

    • C:\ProgramData\nss3.dll
      Filesize

      1.2MB

      MD5

      bfac4e3c5908856ba17d41edcd455a51

      SHA1

      8eec7e888767aa9e4cca8ff246eb2aacb9170428

      SHA256

      e2935b5b28550d47dc971f456d6961f20d1633b4892998750140e0eaa9ae9d78

      SHA512

      2565bab776c4d732ffb1f9b415992a4c65b81bcd644a9a1df1333a269e322925fc1df4f76913463296efd7c88ef194c3056de2f1ca1357d7b5fe5ff0da877a66

    • memory/916-130-0x0000000000AA0000-0x0000000000B36000-memory.dmp
      Filesize

      600KB

    • memory/916-131-0x0000000005980000-0x0000000005F24000-memory.dmp
      Filesize

      5.6MB

    • memory/916-132-0x00000000056A0000-0x0000000005732000-memory.dmp
      Filesize

      584KB

    • memory/1020-133-0x0000000000000000-mapping.dmp
    • memory/1020-134-0x0000000000400000-0x000000000043D000-memory.dmp
      Filesize

      244KB

    • memory/1020-136-0x0000000000400000-0x000000000043D000-memory.dmp
      Filesize

      244KB

    • memory/1020-137-0x0000000000400000-0x000000000043D000-memory.dmp
      Filesize

      244KB

    • memory/1020-138-0x0000000060900000-0x0000000060992000-memory.dmp
      Filesize

      584KB

    • memory/1020-159-0x0000000000400000-0x000000000043D000-memory.dmp
      Filesize

      244KB