Analysis

  • max time kernel
    148s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    07-12-2024 02:15

General

  • Target

    21b7b8656a008ad3e5df1725cddf55e650812c1f3d59609f14c0d3089a886de6.exe

  • Size

    166KB

  • MD5

    f44302503ea4eedfa831c25711df51b7

  • SHA1

    127d6ec83904de48d90c293e53c905fc4206bfb8

  • SHA256

    21b7b8656a008ad3e5df1725cddf55e650812c1f3d59609f14c0d3089a886de6

  • SHA512

    71e9512244d864b53abf436b496a53e6771135cc7d5fc0e4df7d04ac23074b6ed1e7438a28bc232a70f57de97367f0e3a21925bed738c5e47bdf3487ab2f4e03

  • SSDEEP

    3072:XdkwdXAqPEHTJJuVqhHjFV2xEEbh9pKP2qYCp65nTGsAeXy0fkd:XmwBAQeVmWHHePH02qYCp6NGsAeXy9d

Malware Config

Extracted

Family

xenorat

C2

87.120.120.27

Mutex

Xeno_rat_nd8912d

Attributes
  • delay

    11000

  • install_path

    appdata

  • port

    2222

  • startup_name

    mrec

Signatures

  • Detect XenoRat Payload 1 IoCs
  • XenorRat

    XenorRat is a remote access trojan written in C#.

  • Xenorat family
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 4 IoCs
  • Suspicious use of SetThreadContext 6 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 8 IoCs

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

  • Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

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

  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 54 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\21b7b8656a008ad3e5df1725cddf55e650812c1f3d59609f14c0d3089a886de6.exe
    "C:\Users\Admin\AppData\Local\Temp\21b7b8656a008ad3e5df1725cddf55e650812c1f3d59609f14c0d3089a886de6.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3424
    • C:\Users\Admin\AppData\Local\Temp\21b7b8656a008ad3e5df1725cddf55e650812c1f3d59609f14c0d3089a886de6.exe
      C:\Users\Admin\AppData\Local\Temp\21b7b8656a008ad3e5df1725cddf55e650812c1f3d59609f14c0d3089a886de6.exe
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:4400
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /Create /TN "mrec" /XML "C:\Users\Admin\AppData\Local\Temp\tmpA596.tmp" /F
        3⤵
        • System Location Discovery: System Language Discovery
        • Scheduled Task/Job: Scheduled Task
        PID:2936
    • C:\Users\Admin\AppData\Local\Temp\21b7b8656a008ad3e5df1725cddf55e650812c1f3d59609f14c0d3089a886de6.exe
      C:\Users\Admin\AppData\Local\Temp\21b7b8656a008ad3e5df1725cddf55e650812c1f3d59609f14c0d3089a886de6.exe
      2⤵
      • System Location Discovery: System Language Discovery
      PID:3804
    • C:\Users\Admin\AppData\Local\Temp\21b7b8656a008ad3e5df1725cddf55e650812c1f3d59609f14c0d3089a886de6.exe
      C:\Users\Admin\AppData\Local\Temp\21b7b8656a008ad3e5df1725cddf55e650812c1f3d59609f14c0d3089a886de6.exe
      2⤵
      • Checks computer location settings
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:4484
      • C:\Users\Admin\AppData\Roaming\UpdateManager\21b7b8656a008ad3e5df1725cddf55e650812c1f3d59609f14c0d3089a886de6.exe
        "C:\Users\Admin\AppData\Roaming\UpdateManager\21b7b8656a008ad3e5df1725cddf55e650812c1f3d59609f14c0d3089a886de6.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:4744
        • C:\Users\Admin\AppData\Roaming\UpdateManager\21b7b8656a008ad3e5df1725cddf55e650812c1f3d59609f14c0d3089a886de6.exe
          C:\Users\Admin\AppData\Roaming\UpdateManager\21b7b8656a008ad3e5df1725cddf55e650812c1f3d59609f14c0d3089a886de6.exe
          4⤵
          • Executes dropped EXE
          • System Location Discovery: System Language Discovery
          PID:1668
        • C:\Users\Admin\AppData\Roaming\UpdateManager\21b7b8656a008ad3e5df1725cddf55e650812c1f3d59609f14c0d3089a886de6.exe
          C:\Users\Admin\AppData\Roaming\UpdateManager\21b7b8656a008ad3e5df1725cddf55e650812c1f3d59609f14c0d3089a886de6.exe
          4⤵
          • Executes dropped EXE
          PID:1292
          • C:\Windows\SysWOW64\WerFault.exe
            C:\Windows\SysWOW64\WerFault.exe -u -p 1292 -s 80
            5⤵
            • Program crash
            PID:2468
        • C:\Users\Admin\AppData\Roaming\UpdateManager\21b7b8656a008ad3e5df1725cddf55e650812c1f3d59609f14c0d3089a886de6.exe
          C:\Users\Admin\AppData\Roaming\UpdateManager\21b7b8656a008ad3e5df1725cddf55e650812c1f3d59609f14c0d3089a886de6.exe
          4⤵
          • Executes dropped EXE
          • System Location Discovery: System Language Discovery
          PID:2748
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1292 -ip 1292
    1⤵
      PID:4464

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\21b7b8656a008ad3e5df1725cddf55e650812c1f3d59609f14c0d3089a886de6.exe.log

      Filesize

      706B

      MD5

      d95c58e609838928f0f49837cab7dfd2

      SHA1

      55e7139a1e3899195b92ed8771d1ca2c7d53c916

      SHA256

      0407c814aef0d62aec7fd39b7c2f614746f0d8ff41f8ef957736f520f14b0339

      SHA512

      405310b29a833604c6627063bfdcf055a197e01f633ef21da238f1a6415a02e21315d689b4a6669db23e82152bed6f3492afb60963e6b2a0e9bb2ac09a480b5d

    • C:\Users\Admin\AppData\Local\Temp\tmpA596.tmp

      Filesize

      1KB

      MD5

      15b109d35e0bd9e3ef94889362098508

      SHA1

      39867e487200da2e73a9bb3474002829b815950f

      SHA256

      f037640a1cef8650dac021fbef884b9bcc8ee46710bff7141140900ec2b1b985

      SHA512

      651970a776abe6ffb7e7e9222f897e568e3fdd94e25e81abaa666366004d33ea7fd4a51e30f30e243e62e41deec3d6cfe02112a0197d085d761d7ef5061b248c

    • C:\Users\Admin\AppData\Roaming\UpdateManager\21b7b8656a008ad3e5df1725cddf55e650812c1f3d59609f14c0d3089a886de6.exe

      Filesize

      166KB

      MD5

      f44302503ea4eedfa831c25711df51b7

      SHA1

      127d6ec83904de48d90c293e53c905fc4206bfb8

      SHA256

      21b7b8656a008ad3e5df1725cddf55e650812c1f3d59609f14c0d3089a886de6

      SHA512

      71e9512244d864b53abf436b496a53e6771135cc7d5fc0e4df7d04ac23074b6ed1e7438a28bc232a70f57de97367f0e3a21925bed738c5e47bdf3487ab2f4e03

    • memory/3424-3-0x0000000003400000-0x0000000003432000-memory.dmp

      Filesize

      200KB

    • memory/3424-4-0x000000000ADB0000-0x000000000AE4C000-memory.dmp

      Filesize

      624KB

    • memory/3424-5-0x000000000B400000-0x000000000B9A4000-memory.dmp

      Filesize

      5.6MB

    • memory/3424-6-0x000000000AE50000-0x000000000AEE2000-memory.dmp

      Filesize

      584KB

    • memory/3424-7-0x0000000005900000-0x0000000005906000-memory.dmp

      Filesize

      24KB

    • memory/3424-8-0x0000000074980000-0x0000000075130000-memory.dmp

      Filesize

      7.7MB

    • memory/3424-0-0x000000007498E000-0x000000007498F000-memory.dmp

      Filesize

      4KB

    • memory/3424-2-0x0000000003290000-0x0000000003296000-memory.dmp

      Filesize

      24KB

    • memory/3424-17-0x0000000074980000-0x0000000075130000-memory.dmp

      Filesize

      7.7MB

    • memory/3424-1-0x0000000000DE0000-0x0000000000E0E000-memory.dmp

      Filesize

      184KB

    • memory/3804-37-0x0000000074980000-0x0000000075130000-memory.dmp

      Filesize

      7.7MB

    • memory/3804-16-0x0000000074980000-0x0000000075130000-memory.dmp

      Filesize

      7.7MB

    • memory/4400-13-0x0000000074980000-0x0000000075130000-memory.dmp

      Filesize

      7.7MB

    • memory/4400-29-0x0000000074980000-0x0000000075130000-memory.dmp

      Filesize

      7.7MB

    • memory/4400-36-0x0000000074980000-0x0000000075130000-memory.dmp

      Filesize

      7.7MB

    • memory/4400-9-0x0000000000400000-0x0000000000412000-memory.dmp

      Filesize

      72KB

    • memory/4484-28-0x0000000074980000-0x0000000075130000-memory.dmp

      Filesize

      7.7MB

    • memory/4484-38-0x0000000074980000-0x0000000075130000-memory.dmp

      Filesize

      7.7MB