Analysis

  • max time kernel
    145s
  • max time network
    146s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23/09/2024, 23:16

General

  • Target
    i8i8.exe
  • Size 7.8MB
  • Sample240923-29e4cs1dqq
  • SHA256 46390c0c9372992f53b9944fc3f0acaf5338092810466f035290a2a437657135
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • redline

Botnet
  • cheat

C2
  • 127.0.0.1:1639

Signatures

  • RedLine

    RedLine Stealer is a malware family written in C#, first appearing in early 2020.

  • RedLine payload 2 IoCs
  • SectopRAT

    SectopRAT is a remote access trojan first seen in November 2019.

  • SectopRAT payload 2 IoCs
  • Grants admin privileges 1 TTPs

    Uses net.exe to modify the user's privileges.

  • Remote Service Session Hijacking: RDP Hijacking 1 TTPs 2 IoCs

    Adversaries may hijack a legitimate user's remote desktop session to move laterally within an environment.

  • Checks computer location settings 2 TTPs 2 IoCs

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

  • Executes dropped EXE 5 IoCs
  • Loads dropped DLL 15 IoCs
  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Detects Pyinstaller 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Permission Groups Discovery: Local Groups 1 TTPs

    Attempt to find local system groups and permission settings.

  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Gathers network information 2 TTPs 1 IoCs

    Uses commandline utility to view network configuration.

  • Runs net.exe
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 27 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\i8i8.exe
    "C:\Users\Admin\AppData\Local\Temp\i8i8.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1940
    • C:\Users\Admin\AppData\Local\Temp\RarSFX0\rdp builder.exe
      "C:\Users\Admin\AppData\Local\Temp\RarSFX0\rdp builder.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • Suspicious use of WriteProcessMemory
      PID:1100
      • C:\Users\Admin\AppData\Local\Temp\Yzbhrlfsuiprqx.exe
        "C:\Users\Admin\AppData\Local\Temp\Yzbhrlfsuiprqx.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of AdjustPrivilegeToken
        PID:876
      • C:\Users\Admin\AppData\Local\Temp\Fszzxphgcwmloe.exe
        "C:\Users\Admin\AppData\Local\Temp\Fszzxphgcwmloe.exe"
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        • Suspicious use of AdjustPrivilegeToken
        PID:1984
      • C:\Users\Admin\AppData\Local\Temp\Schd.exe
        "C:\Users\Admin\AppData\Local\Temp\Schd.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of WriteProcessMemory
        PID:4976
        • C:\Users\Admin\AppData\Local\Temp\Schd.exe
          "C:\Users\Admin\AppData\Local\Temp\Schd.exe"
          4⤵
          • Executes dropped EXE
          • Loads dropped DLL
          • Suspicious use of WriteProcessMemory
          PID:3748
          • C:\Windows\SYSTEM32\net.exe
            net user Alpha Corazon3145@ /add
            5⤵
            • Suspicious use of WriteProcessMemory
            PID:4900
            • C:\Windows\system32\net1.exe
              C:\Windows\system32\net1 user Alpha Corazon3145@ /add
              6⤵
                PID:1868
            • C:\Windows\SYSTEM32\net.exe
              net localgroup "Remote Desktop Users" Alpha /add
              5⤵
              • Remote Service Session Hijacking: RDP Hijacking
              • Suspicious use of WriteProcessMemory
              PID:1184
              • C:\Windows\system32\net1.exe
                C:\Windows\system32\net1 localgroup "Remote Desktop Users" Alpha /add
                6⤵
                • Remote Service Session Hijacking: RDP Hijacking
                PID:1152
            • C:\Windows\SYSTEM32\net.exe
              net localgroup Administrators Alpha /add
              5⤵
              • Suspicious use of WriteProcessMemory
              PID:1208
              • C:\Windows\system32\net1.exe
                C:\Windows\system32\net1 localgroup Administrators Alpha /add
                6⤵
                  PID:4084
              • C:\Windows\SYSTEM32\ipconfig.exe
                ipconfig
                5⤵
                • Gathers network information
                PID:1040
              • C:\Windows\system32\cmd.exe
                C:\Windows\system32\cmd.exe /c cls
                5⤵
                  PID:1316

        Network

              MITRE ATT&CK Enterprise v15

              Replay Monitor

              Loading Replay Monitor...

              Downloads

              Fszzxphgcwmloe.exe

              • Path C:\Users\Admin\AppData\Local\Temp\Fszzxphgcwmloe.exe
              • Size 95KB
              • SHA256 014b8a8f383e2e1535d3d382851529d77e149a71f312db1518bb40a14def7f64
              • MD5 SHA1 SHA512 SSDEEP

              rdp builder.exe

              • Path C:\Users\Admin\AppData\Local\Temp\RarSFX0\rdp builder.exe
              • Size 7.5MB
              • SHA256 93acd7f68e3f777d29f7f30b922da99fdaeaf71208378604b4c1d28bdfc1a032
              • MD5 SHA1 SHA512 SSDEEP

              Schd.exe

              • Path C:\Users\Admin\AppData\Local\Temp\Schd.exe
              • Size 7.3MB
              • SHA256 0e9621fb6359ea8acd039414c88ebc137c4864703dcfa8605718e6e3b54a597f
              • MD5 SHA1 SHA512 SSDEEP

              Yzbhrlfsuiprqx.exe

              • Path C:\Users\Admin\AppData\Local\Temp\Yzbhrlfsuiprqx.exe
              • Size 343KB
              • SHA256 bbad213fcbcfcb4febeb9da546c8775fc6adcb4fdc0b62913ccf6bfb61fcde85
              • MD5 SHA1 SHA512 SSDEEP

              VCRUNTIME140.dll

              • Path C:\Users\Admin\AppData\Local\Temp\_MEI49762\VCRUNTIME140.dll
              • Size 106KB
              • SHA256 76fdb83fde238226b5bebaf3392ee562e2cb7ca8d3ef75983bf5f9d6c7119644
              • MD5 SHA1 SHA512 SSDEEP

              _bz2.pyd

              • Path C:\Users\Admin\AppData\Local\Temp\_MEI49762\_bz2.pyd
              • Size 82KB
              • SHA256 50e21ce62f8d9bab92f6a7e9b39a86406c32d2df18408bb52ffb3d245c644c7b
              • MD5 SHA1 SHA512 SSDEEP

              _hashlib.pyd

              • Path C:\Users\Admin\AppData\Local\Temp\_MEI49762\_hashlib.pyd
              • Size 63KB
              • SHA256 19dd3b5ebb840885543974a4cb6c8ea4539d76e3672be0f390a3a82443391778
              • MD5 SHA1 SHA512 SSDEEP

              _lzma.pyd

              • Path C:\Users\Admin\AppData\Local\Temp\_MEI49762\_lzma.pyd
              • Size 155KB
              • SHA256 ab822f7e846d4388b6f435d788a028942096ba1344297e0b7005c9d50814981b
              • MD5 SHA1 SHA512 SSDEEP

              _queue.pyd

              • Path C:\Users\Admin\AppData\Local\Temp\_MEI49762\_queue.pyd
              • Size 31KB
              • SHA256 9517689d7d97816dee9e6c01ffd35844a3af6cde3ff98f3a709d52157b1abe03
              • MD5 SHA1 SHA512 SSDEEP

              _socket.pyd

              • Path C:\Users\Admin\AppData\Local\Temp\_MEI49762\_socket.pyd
              • Size 77KB
              • SHA256 e05c5342d55cb452e88e041061faba492d6dd9268a7f67614a8143540aca2bfe
              • MD5 SHA1 SHA512 SSDEEP

              _ssl.pyd

              • Path C:\Users\Admin\AppData\Local\Temp\_MEI49762\_ssl.pyd
              • Size 157KB
              • SHA256 3bac94d8713a143095ef8e2f5d2b4a3765ebc530c8ca051080d415198cecf380
              • MD5 SHA1 SHA512 SSDEEP

              base_library.zip

              • Path C:\Users\Admin\AppData\Local\Temp\_MEI49762\base_library.zip
              • Size 1.7MB
              • SHA256 65ebc074b147d65841a467a49f30a5f2f54659a0cc5dc31411467263a37c02df
              • MD5 SHA1 SHA512 SSDEEP

              cacert.pem

              • Path C:\Users\Admin\AppData\Local\Temp\_MEI49762\certifi\cacert.pem
              • Size 268KB
              • SHA256 2c11c3ce08ffc40d390319c72bc10d4f908e9c634494d65ed2cbc550731fd524
              • MD5 SHA1 SHA512 SSDEEP

              md.cp311-win_amd64.pyd

              • Path C:\Users\Admin\AppData\Local\Temp\_MEI49762\charset_normalizer\md.cp311-win_amd64.pyd
              • Size 10KB
              • SHA256 fff69928dea1432e0c7cb1225ab96f94fd38d5d852de9a6bb8bf30b7d2bedceb
              • MD5 SHA1 SHA512 SSDEEP

              md__mypyc.cp311-win_amd64.pyd

              • Path C:\Users\Admin\AppData\Local\Temp\_MEI49762\charset_normalizer\md__mypyc.cp311-win_amd64.pyd
              • Size 113KB
              • SHA256 207bbae9ddf8bdd64e65a8d600fe1dd0465f2afcd6dc6e28d4d55887cd6cbd13
              • MD5 SHA1 SHA512 SSDEEP

              libcrypto-1_1.dll

              • Path C:\Users\Admin\AppData\Local\Temp\_MEI49762\libcrypto-1_1.dll
              • Size 3.3MB
              • SHA256 eb975c94e5f4292edd9a8207e356fe4ea0c66e802c1e9305323d37185f85ad6d
              • MD5 SHA1 SHA512 SSDEEP

              libssl-1_1.dll

              • Path C:\Users\Admin\AppData\Local\Temp\_MEI49762\libssl-1_1.dll
              • Size 686KB
              • SHA256 d98dd943517963fd0e790fde00965822aa4e4a48e8a479afad74abf14a300771
              • MD5 SHA1 SHA512 SSDEEP

              python311.dll

              • Path C:\Users\Admin\AppData\Local\Temp\_MEI49762\python311.dll
              • Size 5.5MB
              • SHA256 0a9f2c98f36ba8974a944127b5b7e90e638010e472f2eb6598fc55b1bda9e7ae
              • MD5 SHA1 SHA512 SSDEEP

              select.pyd

              • Path C:\Users\Admin\AppData\Local\Temp\_MEI49762\select.pyd
              • Size 29KB
              • SHA256 b5d4d5b6da675376bd3b2824d9cda957b55fe3d8596d5675381922ef0e64a0f5
              • MD5 SHA1 SHA512 SSDEEP

              unicodedata.pyd

              • Path C:\Users\Admin\AppData\Local\Temp\_MEI49762\unicodedata.pyd
              • Size 1.1MB
              • SHA256 a5db7900ecd5ea5ab1c06a8f94b2885f00dd2e1adf34bcb50c8a71691a97804f
              • MD5 SHA1 SHA512 SSDEEP

              memory/876-41-0x000000001B080000-0x000000001B11E000-memory.dmp

              memory/876-109-0x0000000002760000-0x000000000279C000-memory.dmp

              memory/876-108-0x0000000000E30000-0x0000000000E42000-memory.dmp

              memory/876-40-0x00000000004F0000-0x00000000004F8000-memory.dmp

              memory/1100-16-0x00007FFD06663000-0x00007FFD06665000-memory.dmp

              memory/1100-17-0x0000000000570000-0x0000000000CEC000-memory.dmp

              memory/1100-18-0x00007FFD06660000-0x00007FFD07121000-memory.dmp

              memory/1100-52-0x00007FFD06660000-0x00007FFD07121000-memory.dmp

              memory/1984-66-0x00000000050F0000-0x0000000005708000-memory.dmp

              memory/1984-106-0x0000000004C50000-0x0000000004D5A000-memory.dmp

              memory/1984-51-0x0000000000100000-0x000000000011E000-memory.dmp

              memory/1984-80-0x00000000049F0000-0x0000000004A3C000-memory.dmp

              memory/1984-68-0x00000000049B0000-0x00000000049EC000-memory.dmp

              memory/1984-67-0x00000000024F0000-0x0000000002502000-memory.dmp