Analysis

  • max time kernel
    147s
  • max time network
    47s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    14-07-2022 08:18

General

  • Target

    46eecfde17e88bffcc4e3d0ba4db2c5c5bab27c1f47a7661699a986fc8e5d318.exe

  • Size

    100KB

  • MD5

    fa74205d777d6115790cd52033aa58b3

  • SHA1

    ffd40894c0c8884dfa1f578bbbc2c536ad9a1b76

  • SHA256

    46eecfde17e88bffcc4e3d0ba4db2c5c5bab27c1f47a7661699a986fc8e5d318

  • SHA512

    020715d64e43cfc570780b9da36be5a388f7c77613febd41ce83a590496eb8cd347b2ac75ad89b1fd29786ca82720727e6a16099d2d863ad7830e5b7c6aee2ad

Malware Config

Extracted

Family

sality

C2

http://89.119.67.154/testo5/

http://kukutrustnet777.info/home.gif

http://kukutrustnet888.info/home.gif

http://kukutrustnet987.info/home.gif

http://www.klkjwre9fqwieluoi.info/

http://kukutrustnet777888.info/

Signatures

  • Modifies firewall policy service 2 TTPs 3 IoCs
  • Sality

    Sality is backdoor written in C++, first discovered in 2003.

  • UAC bypass 3 TTPs 1 IoCs
  • Windows security bypass 2 TTPs 6 IoCs
  • UPX packed file 3 IoCs

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

  • Windows security modification 2 TTPs 7 IoCs
  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Enumerates connected drives 3 TTPs 22 IoCs

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

  • Drops autorun.inf file 1 TTPs 1 IoCs

    Malware can abuse Windows Autorun to spread further via attached volumes.

  • Drops file in Program Files directory 1 IoCs
  • Drops file in Windows directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 14 IoCs
  • Suspicious use of AdjustPrivilegeToken 21 IoCs
  • Suspicious use of WriteProcessMemory 42 IoCs
  • System policy modification 1 TTPs 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\46eecfde17e88bffcc4e3d0ba4db2c5c5bab27c1f47a7661699a986fc8e5d318.exe
    "C:\Users\Admin\AppData\Local\Temp\46eecfde17e88bffcc4e3d0ba4db2c5c5bab27c1f47a7661699a986fc8e5d318.exe"
    1⤵
    • Modifies firewall policy service
    • UAC bypass
    • Windows security bypass
    • Windows security modification
    • Checks whether UAC is enabled
    • Enumerates connected drives
    • Drops autorun.inf file
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    • System policy modification
    PID:884
  • C:\Windows\Explorer.EXE
    C:\Windows\Explorer.EXE
    1⤵
      PID:1224
    • C:\Windows\system32\Dwm.exe
      "C:\Windows\system32\Dwm.exe"
      1⤵
        PID:1180
      • C:\Windows\system32\taskhost.exe
        "taskhost.exe"
        1⤵
          PID:1124

        Network

        MITRE ATT&CK Matrix ATT&CK v6

        Initial Access

        Replication Through Removable Media

        1
        T1091

        Persistence

        Modify Existing Service

        1
        T1031

        Privilege Escalation

        Bypass User Account Control

        1
        T1088

        Defense Evasion

        Modify Registry

        5
        T1112

        Bypass User Account Control

        1
        T1088

        Disabling Security Tools

        3
        T1089

        Discovery

        System Information Discovery

        3
        T1082

        Query Registry

        1
        T1012

        Peripheral Device Discovery

        1
        T1120

        Lateral Movement

        Replication Through Removable Media

        1
        T1091

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • memory/884-54-0x0000000075941000-0x0000000075943000-memory.dmp
          Filesize

          8KB

        • memory/884-55-0x0000000001EA0000-0x0000000002F2E000-memory.dmp
          Filesize

          16.6MB

        • memory/884-57-0x00000000746E1000-0x00000000746E3000-memory.dmp
          Filesize

          8KB

        • memory/884-56-0x0000000000400000-0x0000000000416000-memory.dmp
          Filesize

          88KB

        • memory/884-58-0x0000000001EA0000-0x0000000002F2E000-memory.dmp
          Filesize

          16.6MB

        • memory/884-59-0x0000000000290000-0x0000000000292000-memory.dmp
          Filesize

          8KB

        • memory/884-60-0x0000000004ED0000-0x0000000004ED2000-memory.dmp
          Filesize

          8KB

        • memory/884-61-0x0000000001EA0000-0x0000000002F2E000-memory.dmp
          Filesize

          16.6MB

        • memory/884-62-0x0000000000290000-0x0000000000292000-memory.dmp
          Filesize

          8KB

        • memory/884-63-0x0000000004ED0000-0x0000000004ED2000-memory.dmp
          Filesize

          8KB