Analysis

  • max time kernel
    78s
  • max time network
    164s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
  • submitted
    25-12-2023 01:32

General

  • Target

    20b54556a3a3101e060d2d04621b33d5.exe

  • Size

    157KB

  • MD5

    20b54556a3a3101e060d2d04621b33d5

  • SHA1

    a18f78bc460e15ce2f98fae4423d4856728a3a31

  • SHA256

    56c1a28f84e286c53178a2d631a1df4409bdb5fa0c0452a244ea9defc4d6d2ad

  • SHA512

    59ce38cd81a14d9a76e671dc6685702a458d2dd6021ae95f18e123782e79c0ba31356426f694b3ee7c31e16953f52afc4091aeef19367a3ef86d2b857ad5ff0b

  • SSDEEP

    3072:waFoV8RSJAm1gJ5LHRpL48eSURN5QCwJ9OcMkEeIhvryajU0of3Qw4+:waKAm1gfHR5nenTcXIH1w4

Score
10/10

Malware Config

Signatures

  • Modifies firewall policy service 2 TTPs 18 IoCs
  • Modifies security service 2 TTPs 18 IoCs
  • Deletes itself 1 IoCs
  • Executes dropped EXE 2 IoCs
  • Registers COM server for autorun 1 TTPs 4 IoCs
  • Unexpected DNS network traffic destination 9 IoCs

    Network traffic to other servers than the configured DNS servers was detected on the DNS port.

  • Drops desktop.ini file(s) 2 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Modifies registry class 6 IoCs
  • Suspicious behavior: EnumeratesProcesses 7 IoCs
  • Suspicious use of AdjustPrivilegeToken 24 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Windows\system32\services.exe
    C:\Windows\system32\services.exe
    1⤵
    • Modifies firewall policy service
    • Modifies security service
    • Executes dropped EXE
    • Drops desktop.ini file(s)
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    PID:464
  • C:\Windows\Explorer.EXE
    C:\Windows\Explorer.EXE
    1⤵
    • Executes dropped EXE
    PID:1220
    • C:\Users\Admin\AppData\Local\Temp\20b54556a3a3101e060d2d04621b33d5.exe
      "C:\Users\Admin\AppData\Local\Temp\20b54556a3a3101e060d2d04621b33d5.exe"
      2⤵
      • Registers COM server for autorun
      • Suspicious use of SetThreadContext
      • Modifies registry class
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1888
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\system32\cmd.exe"
        3⤵
        • Deletes itself
        PID:2856

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\$Recycle.Bin\S-1-5-18\$6367fb4bb5c9d074f341f311a16214c0\@

    Filesize

    2KB

    MD5

    ed93082984087b51365f28861299c5f7

    SHA1

    f5e782e831d22866d573e99cc8bc90bd71024af7

    SHA256

    237326b2609db2de7245e1e4839fe72fb94668d9750f12cd1128b5dcbe770bd5

    SHA512

    74345db539dfcfe896491ddeb55c6ca1f5eb0a21460936598ce00d0e8a5ebedf469d1e1d146c5d2e372be4af8b26613ae767af82108a9a046defd51a34b2c2a3

  • C:\$Recycle.Bin\S-1-5-21-3308111660-3636268597-2291490419-1000\$6367fb4bb5c9d074f341f311a16214c0\n

    Filesize

    41KB

    MD5

    fb4e3236959152a057bc6b7603c538ef

    SHA1

    b25a70c07dd2eb1c9fdf89f7a2ffc286f226edf4

    SHA256

    8244ddfcba327a3f67a5582642c53241ee5e58d75808547cd74808bcded272d0

    SHA512

    993dbfbf71394ad1f120a8687d57eac2b9a55b11b1594aadd5a8d90edc0a26e5fd21f78317d342837ce27728613b5fc9c6ea40f86d17e5c477071be84f8aa3d2

  • memory/464-24-0x00000000000F0000-0x00000000000F1000-memory.dmp

    Filesize

    4KB

  • memory/464-17-0x00000000000F0000-0x00000000000F1000-memory.dmp

    Filesize

    4KB

  • memory/1220-11-0x0000000001DC0000-0x0000000001DC1000-memory.dmp

    Filesize

    4KB

  • memory/1220-7-0x0000000000400000-0x000000000043A000-memory.dmp

    Filesize

    232KB

  • memory/1888-5-0x0000000000230000-0x0000000000231000-memory.dmp

    Filesize

    4KB

  • memory/1888-6-0x0000000000400000-0x000000000043A000-memory.dmp

    Filesize

    232KB

  • memory/1888-1-0x0000000000400000-0x000000000043A000-memory.dmp

    Filesize

    232KB

  • memory/1888-4-0x0000000000270000-0x00000000002AA000-memory.dmp

    Filesize

    232KB

  • memory/1888-16-0x0000000000400000-0x000000000043A000-memory.dmp

    Filesize

    232KB

  • memory/1888-3-0x0000000000400000-0x000000000043A000-memory.dmp

    Filesize

    232KB

  • memory/1888-2-0x0000000000220000-0x0000000000221000-memory.dmp

    Filesize

    4KB

  • memory/1888-23-0x0000000000270000-0x00000000002AA000-memory.dmp

    Filesize

    232KB

  • memory/1888-22-0x0000000000400000-0x000000000043A000-memory.dmp

    Filesize

    232KB

  • memory/1888-0-0x0000000000400000-0x000000000043A000-memory.dmp

    Filesize

    232KB