Analysis

  • max time kernel
    150s
  • max time network
    129s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    12/03/2024, 12:22

General

  • Target

    309ec6307a21fa5259fc2e1b517b03b1fe9b37fe68fef49107cb82a35b5c6417.exe

  • Size

    2.0MB

  • MD5

    23f626717d84253e95c463a266a28a4e

  • SHA1

    f1e2ab8fb2f12eae52028ba491a672c79770e052

  • SHA256

    309ec6307a21fa5259fc2e1b517b03b1fe9b37fe68fef49107cb82a35b5c6417

  • SHA512

    90551396fdd81876b9a4caf1ee5ea38667dfdd99fba58ebbe4e04dbdc183ecbce281c594117e2ad13abf198a286087db393b1df45e0e4ab52c73a25b30a0fca6

  • SSDEEP

    49152:L71kcjGwZPU046Gaut8sCstaHQB6Nvq2TbLJ5R:lkVSx1GPhSQBal/vR

Malware Config

Extracted

Family

stealc

C2

http://185.172.128.145

Attributes
  • url_path

    /3cd2b41cbde8fc9c.php

Signatures

  • Stealc

    Stealc is an infostealer written in C++.

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

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

  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 4 IoCs
  • Reads data files stored by FTP clients 2 TTPs

    Tries to access configuration files associated with programs like FileZilla.

  • Reads user/profile data of web browsers 2 TTPs

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

  • UPX packed file 3 IoCs

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

  • Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • 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.

  • Creates scheduled task(s) 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 27 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\309ec6307a21fa5259fc2e1b517b03b1fe9b37fe68fef49107cb82a35b5c6417.exe
    "C:\Users\Admin\AppData\Local\Temp\309ec6307a21fa5259fc2e1b517b03b1fe9b37fe68fef49107cb82a35b5c6417.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:4972
    • C:\Users\Admin\AppData\Local\Temp\syncUpd.exe
      C:\Users\Admin\AppData\Local\Temp\syncUpd.exe
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • Loads dropped DLL
      • Checks processor information in registry
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:4812
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\system32\cmd.exe" /c start "" "C:\Users\Admin\AppData\Local\Temp\HCAEHJJKFC.exe"
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:4556
        • C:\Users\Admin\AppData\Local\Temp\HCAEHJJKFC.exe
          "C:\Users\Admin\AppData\Local\Temp\HCAEHJJKFC.exe"
          4⤵
          • Checks computer location settings
          • Executes dropped EXE
          • Adds Run key to start application
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:4212
          • C:\Windows\SysWOW64\cmd.exe
            "C:\Windows\System32\cmd.exe" /C ping 2.2.2.2 -n 1 -w 3000 > Nul & Del C:\Users\Admin\AppData\Local\Temp\HCAEHJJKFC.exe
            5⤵
            • Suspicious use of WriteProcessMemory
            PID:3512
            • C:\Windows\SysWOW64\PING.EXE
              ping 2.2.2.2 -n 1 -w 3000
              6⤵
              • Runs ping.exe
              PID:3444
    • C:\Users\Admin\AppData\Local\Temp\BroomSetup.exe
      C:\Users\Admin\AppData\Local\Temp\BroomSetup.exe
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:1320
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Roaming\Temp\Task.bat" "
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:2952
        • C:\Windows\SysWOW64\chcp.com
          chcp 1251
          4⤵
            PID:4004
          • C:\Windows\SysWOW64\schtasks.exe
            schtasks /create /tn "MalayamaraUpdate" /tr "'C:\Users\Admin\AppData\Local\Temp\Updater.exe'" /sc minute /mo 30 /F
            4⤵
            • Creates scheduled task(s)
            PID:4104

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\ProgramData\Are.docx

      Filesize

      11KB

      MD5

      a33e5b189842c5867f46566bdbf7a095

      SHA1

      e1c06359f6a76da90d19e8fd95e79c832edb3196

      SHA256

      5abf8e3d1f78de7b09d7f6fb87f9e80e60caacf13ef3c1289665653dacd7c454

      SHA512

      f2ad3812ec9b915e9618539b0f103f2e9acaad25fbbacd84941c954ce070af231324e83a4621e951c1dbae8d40d50410954e40dd52bbd46e34c54b0d1957407b

    • 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\BroomSetup.exe

      Filesize

      1.7MB

      MD5

      eee5ddcffbed16222cac0a1b4e2e466e

      SHA1

      28b40c88b8ea50b0782e2bcbb4cc0f411035f3d5

      SHA256

      2a40e5dccc7526c4982334941c90f95374460e2a816e84e724e98c4d52ae8c54

      SHA512

      8f88901f3ebd425818db09f268df19ccf8a755603f04e9481bcf02b112a84393f8a900ead77f8f971bfa33fd9fa5636b7494aaee864a0fb04e3273911a4216dc

    • C:\Users\Admin\AppData\Local\Temp\HCAEHJJKFC.exe

      Filesize

      101KB

      MD5

      42b838cf8bdf67400525e128d917f6e0

      SHA1

      a578f6faec738912dba8c41e7abe1502c46d0cae

      SHA256

      0e4ffba62ce9a464aa1b7ff9f1e55ace8f51ff1e15102d856f801a81f8b4607d

      SHA512

      f64b39d885375251ab7db72c57dc5b5095f0c6412169f1035d1f6a25b8415a2a01004d06bfa0267cf683ef7dea7a9f969ad43fde5a4376f1fcb65a57403433c0

    • C:\Users\Admin\AppData\Local\Temp\nsc71F6.tmp\INetC.dll

      Filesize

      21KB

      MD5

      2b342079303895c50af8040a91f30f71

      SHA1

      b11335e1cb8356d9c337cb89fe81d669a69de17e

      SHA256

      2d5d89025911e2e273f90f393624be4819641dbee1606de792362e442e54612f

      SHA512

      550452dadc86ecd205f40668894116790a456fe46e9985d68093d36cf32abf00edecb5c56ff0287464a0e819db7b3cc53926037a116de6c651332a7cc8035d47

    • C:\Users\Admin\AppData\Local\Temp\syncUpd.exe

      Filesize

      199KB

      MD5

      04cdeae76554c91315c3524135267d7c

      SHA1

      4e4bc1eb29a0d745b65c87d64bf80e5a8461b7f8

      SHA256

      62a4dd1892de69284a7ae05b81b79da497e3840ceb4e8f4f0fd8fc83d4d643b6

      SHA512

      6d645cdc6335a1df3863ec99f10beb977a8cc177316d26eddce34936ea1428f3b7d82ea2d44d0c36923538b32ce3444220b0b0088383dec279a9c91fbd34376a

    • C:\Users\Admin\AppData\Roaming\Temp\Task.bat

      Filesize

      128B

      MD5

      11bb3db51f701d4e42d3287f71a6a43e

      SHA1

      63a4ee82223be6a62d04bdfe40ef8ba91ae49a86

      SHA256

      6be22058abfb22b40a42fb003f86b89e204a83024c03eb82cd53e2a0a047c331

      SHA512

      907ad2c070cc1db89f43459a94d7f48985d939d749c9648b78572a266f0d3fde47813a129e9151dbf4a7d96d36f588172f57c88b8b947b56ed818d7d068abab2

    • memory/1320-39-0x0000000000400000-0x0000000000930000-memory.dmp

      Filesize

      5.2MB

    • memory/1320-28-0x0000000000B00000-0x0000000000B01000-memory.dmp

      Filesize

      4KB

    • memory/1320-27-0x0000000000400000-0x0000000000930000-memory.dmp

      Filesize

      5.2MB

    • memory/1320-79-0x0000000000B00000-0x0000000000B01000-memory.dmp

      Filesize

      4KB

    • memory/4212-129-0x00000000008F0000-0x000000000090E000-memory.dmp

      Filesize

      120KB

    • memory/4212-130-0x00000000747F0000-0x0000000074FA0000-memory.dmp

      Filesize

      7.7MB

    • memory/4212-131-0x0000000005210000-0x0000000005220000-memory.dmp

      Filesize

      64KB

    • memory/4212-135-0x00000000747F0000-0x0000000074FA0000-memory.dmp

      Filesize

      7.7MB

    • memory/4212-137-0x0000000005210000-0x0000000005220000-memory.dmp

      Filesize

      64KB

    • memory/4812-74-0x0000000000400000-0x000000000063B000-memory.dmp

      Filesize

      2.2MB

    • memory/4812-95-0x0000000000400000-0x000000000063B000-memory.dmp

      Filesize

      2.2MB

    • memory/4812-86-0x0000000000400000-0x000000000063B000-memory.dmp

      Filesize

      2.2MB

    • memory/4812-73-0x0000000000730000-0x0000000000830000-memory.dmp

      Filesize

      1024KB

    • memory/4812-125-0x0000000000400000-0x000000000063B000-memory.dmp

      Filesize

      2.2MB

    • memory/4812-33-0x0000000061E00000-0x0000000061EF3000-memory.dmp

      Filesize

      972KB

    • memory/4812-32-0x0000000000400000-0x000000000063B000-memory.dmp

      Filesize

      2.2MB

    • memory/4812-19-0x0000000000400000-0x000000000063B000-memory.dmp

      Filesize

      2.2MB

    • memory/4812-18-0x00000000009B0000-0x00000000009D7000-memory.dmp

      Filesize

      156KB

    • memory/4812-17-0x0000000000730000-0x0000000000830000-memory.dmp

      Filesize

      1024KB

    • memory/4972-26-0x0000000000400000-0x000000000043D000-memory.dmp

      Filesize

      244KB