Overview

overview

8

Static

static

8

cfbdc33e80...a9.exe

windows7-x64

8

cfbdc33e80...a9.exe

windows10-2004-x64

8

Analysis

  • max time kernel
    141s
  • max time network
    162s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    20-10-2022 16:51

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General

  • Target

    cfbdc33e80a3cdb70b6424c25f9080589e0426bbf8582e2b3533dbd1f4e69da9.exe

  • Size

    350KB

  • MD5

    49d2d3f5d89ec10080335fc849911660

  • SHA1

    b6d8d1a394b5a68d6a1f0fc1b34ccefe76ea3064

  • SHA256

    cfbdc33e80a3cdb70b6424c25f9080589e0426bbf8582e2b3533dbd1f4e69da9

  • SHA512

    d241dddb398733b2563e79d548029125c05d11a8e1eb34ff0d5bb0bdfd53ce9bb74c067992a33101d05362796e509dd078478d60c3209a25936462c4512f9ac9

  • SSDEEP

    6144:byXu7IEBSsQ9ElMwm60lmqs7MTRGA3h3GVqdppJXEGhBukJF/KAwxFUOWdEmh:b3BdQLL4BE93NGVYZX9BukJlwxSJdEm

Score
8/10
adwarediscoveryexploitpersistencestealerupx

Malware Config

Signatures

  • Drops file in Drivers directory 2 IoCs
  • Possible privilege escalation attempt 2 IoCs
    exploit
  • Sets service image path in registry 2 TTPs 2 IoCs
    persistence
  • UPX packed file 3 IoCs

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

    upx
  • Modifies file permissions 1 TTPs 2 IoCs
    discovery
  • Installs/modifies Browser Helper Object 2 TTPs 3 IoCs

    BHOs are DLL modules which act as plugins for Internet Explorer.

    stealeradware
  • Drops file in System32 directory 5 IoCs
  • Modifies registry class 4 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: LoadsDriver 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\cfbdc33e80a3cdb70b6424c25f9080589e0426bbf8582e2b3533dbd1f4e69da9.exe
    "C:\Users\Admin\AppData\Local\Temp\cfbdc33e80a3cdb70b6424c25f9080589e0426bbf8582e2b3533dbd1f4e69da9.exe"
    1⤵
    • Drops file in Drivers directory
    • Sets service image path in registry
    • Installs/modifies Browser Helper Object
    • Drops file in System32 directory
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: LoadsDriver
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2556
    • C:\Windows\SysWOW64\cmd.exe
      cmd.exe /c takeown /f C:\Windows\SysWOW64\wshtcpip.dll && icacls C:\Windows\SysWOW64\wshtcpip.dll /grant administrators:F
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4876
      • C:\Windows\SysWOW64\takeown.exe
        takeown /f C:\Windows\SysWOW64\wshtcpip.dll
        3⤵
        • Possible privilege escalation attempt
        • Modifies file permissions
        • Suspicious use of AdjustPrivilegeToken
        PID:2200
      • C:\Windows\SysWOW64\icacls.exe
        icacls C:\Windows\SysWOW64\wshtcpip.dll /grant administrators:F
        3⤵
        • Possible privilege escalation attempt
        • Modifies file permissions
        PID:4992
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\Temp\ahnmove.bat
      2⤵
        PID:2124

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Initial Access

    Execution

    Persistence

    Registry Run Keys / Startup Folder

    1
    T1060

    Browser Extensions

    1
    T1176

    Privilege Escalation

    Defense Evasion

    Modify Registry

    2
    T1112

    File Permissions Modification

    1
    T1222

    Credential Access

    Discovery

    Lateral Movement

    Collection

    Exfiltration

    Command and Control

    Impact

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Local\Temp\ahnmove.bat
      Filesize

      181B

      MD5

      c0460b3b9088dec9820482238322d4cb

      SHA1

      5325ee25f06d54461c8992b965e37162a30b7acf

      SHA256

      4fccd35ca6b24e2d1b662232153f2a0f23e8ecec98769381bb887da6fc9cfb0c

      SHA512

      a1051e787af7a0844dd3ea85a9a8d9943eb9c44a4144fe68be0c2b4bebd9a5be0ec2660363b9dd817bce78248e8b15af89704dd44a1e029f5c41cb963baba806

      Download Submit
    • memory/2124-137-0x0000000000000000-mapping.dmp
      Download
    • memory/2200-135-0x0000000000000000-mapping.dmp
      Download
    • memory/2556-132-0x0000000001000000-0x000000000112D000-memory.dmp
      Filesize

      1.2MB

      Download
    • memory/2556-133-0x0000000001000000-0x000000000112D000-memory.dmp
      Filesize

      1.2MB

      Download
    • memory/2556-138-0x0000000001000000-0x000000000112D000-memory.dmp
      Filesize

      1.2MB

      Download
    • memory/4876-134-0x0000000000000000-mapping.dmp
      Download
    • memory/4992-136-0x0000000000000000-mapping.dmp
      Download