Analysis

  • max time kernel
    144s
  • max time network
    47s
  • platform
    windows7_x64
  • resource
    win7-20220718-en
  • resource tags

    arch:x64arch:x86image:win7-20220718-enlocale:en-usos:windows7-x64system
  • submitted
    24-07-2022 13:38

General

  • Target

    cf5022347156b611901e720d0751966382533cf8d78be2031bc95d36de1b0128.exe

  • Size

    1.1MB

  • MD5

    8e87048678cfa281b892e0fc6d51a63b

  • SHA1

    422a69ae391cc15c7135dc349f5190da3f53f3f7

  • SHA256

    cf5022347156b611901e720d0751966382533cf8d78be2031bc95d36de1b0128

  • SHA512

    e36ea0cfce983fc311d81ac01271977fcba687a2980cee7ed8812d5189af31290223ca5037217a670d8d6839d6e895b5ef4074db90cd7c0f9dd25f20c0a903f3

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
  • Disables RegEdit via registry modification 1 IoCs
  • Disables Task Manager via registry modification
  • 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 5 IoCs
  • Drops file in Windows directory 1 IoCs
  • 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:\Windows\Explorer.EXE
    C:\Windows\Explorer.EXE
    1⤵
      PID:1356
      • C:\Users\Admin\AppData\Local\Temp\cf5022347156b611901e720d0751966382533cf8d78be2031bc95d36de1b0128.exe
        "C:\Users\Admin\AppData\Local\Temp\cf5022347156b611901e720d0751966382533cf8d78be2031bc95d36de1b0128.exe"
        2⤵
        • Modifies firewall policy service
        • UAC bypass
        • Windows security bypass
        • Disables RegEdit via registry modification
        • 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:1644
    • C:\Windows\system32\Dwm.exe
      "C:\Windows\system32\Dwm.exe"
      1⤵
        PID:1304
      • C:\Windows\system32\taskhost.exe
        "taskhost.exe"
        1⤵
          PID:1216

        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

        2
        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/1644-54-0x0000000076281000-0x0000000076283000-memory.dmp
          Filesize

          8KB

        • memory/1644-55-0x0000000001DF0000-0x0000000002E7E000-memory.dmp
          Filesize

          16.6MB

        • memory/1644-56-0x0000000000400000-0x0000000000441000-memory.dmp
          Filesize

          260KB

        • memory/1644-57-0x0000000001DF0000-0x0000000002E7E000-memory.dmp
          Filesize

          16.6MB

        • memory/1644-58-0x0000000000340000-0x0000000000342000-memory.dmp
          Filesize

          8KB

        • memory/1644-59-0x0000000004070000-0x0000000004072000-memory.dmp
          Filesize

          8KB

        • memory/1644-60-0x0000000001DF0000-0x0000000002E7E000-memory.dmp
          Filesize

          16.6MB

        • memory/1644-61-0x0000000000340000-0x0000000000342000-memory.dmp
          Filesize

          8KB

        • memory/1644-62-0x0000000004070000-0x0000000004072000-memory.dmp
          Filesize

          8KB

        • memory/1644-63-0x0000000000400000-0x0000000000441000-memory.dmp
          Filesize

          260KB