Analysis

  • max time kernel
    150s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    25/01/2024, 13:22

General

  • Target
    74ccfbabd5376167c9e52c89c0478ec5.exe
  • Size 1016KB
  • Sample240125-qmnansgdf2
  • SHA256 24631515535420a7600ac6e1191f49b8162c7c3d1ca82a163b66451e448fab2f
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • blustealer

Credentials
  • Protocol

    smtp

  • Host

    mail.enche.com

  • Port

    587

  • Password

    Merchandise08012021

Signatures

  • A310logger

    A310 Logger is a .NET stealer/logger targeting passwords from browsers and email clients.

  • BluStealer

    A Modular information stealer written in Visual Basic.

  • A310logger Executable 2 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 1 IoCs
  • Reads local data of messenger clients 2 TTPs

    Infostealers often target stored data of messaging applications, which can include saved credentials and account information.

  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
  • Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Creates scheduled task(s) 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 7 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 22 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\74ccfbabd5376167c9e52c89c0478ec5.exe
    "C:\Users\Admin\AppData\Local\Temp\74ccfbabd5376167c9e52c89c0478ec5.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3436
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\74ccfbabd5376167c9e52c89c0478ec5.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3180
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\zFdYmdUOJ.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1836
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\zFdYmdUOJ" /XML "C:\Users\Admin\AppData\Local\Temp\tmpCA50.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:1588
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\zFdYmdUOJ.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:5036
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
      2⤵
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:4864
      • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\NET4\Fox.exe
        C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\NET4\Fox.exe
        3⤵
        • Executes dropped EXE
        • Accesses Microsoft Outlook profiles
        • outlook_office_path
        • outlook_win_path
        PID:1696

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        powershell.exe.log

        • Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log
        • Size 2KB
        • SHA256 92099c10776bb7e3f2a8d1b82d4d40d0c4627e4f1bf754a6e58dfd2c2e97042a
        • MD5 SHA1 SHA512

        StartupProfileData-NonInteractive

        • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
        • Size 18KB
        • SHA256 6b5dcc248dffe3b178715378e30941771e589014e9be523aae215788614c22eb
        • MD5 SHA1 SHA512 SSDEEP

        __PSScriptPolicyTest_2l1v4jxd.iag.ps1

        • Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_2l1v4jxd.iag.ps1
        • Size 60B
        • SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
        • MD5 SHA1 SHA512

        tmpCA50.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\tmpCA50.tmp
        • Size 1KB
        • SHA256 b4bd52f17b692406e175d1ed58bcd156758bf83c8a4584b07d5d976217ad7373
        • MD5 SHA1 SHA512

        Fox.exe

        • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\NET4\Fox.exe
        • Size 689KB
        • SHA256 0872abe29cc9231cdded3a44e02a7ea17f09cf2ac2bdbd7077065858829c3723
        • MD5 SHA1 SHA512 SSDEEP

        VR2OYSDUNH.zip

        • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\VR2OYSDUNH.zip
        • Size 285KB
        • SHA256 ef95540ec8dae3d255439fb847d26397c265b5cccda5ed0d6b9ed3dda14a2820
        • MD5 SHA1 SHA512 SSDEEP

        credentials.txt

        • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\credentials.txt
        • Size 691B
        • SHA256 2c6357f759dedbfc6408812338375ec93612881d36739e5d55b5aac458f9492e
        • MD5 SHA1 SHA512

        memory/1696-107-0x00007FF9767D0000-0x00007FF977291000-memory.dmp

        memory/1696-99-0x000000001BD50000-0x000000001BD60000-memory.dmp

        memory/1696-98-0x00007FF9767D0000-0x00007FF977291000-memory.dmp

        memory/1696-97-0x0000000000FA0000-0x0000000001052000-memory.dmp

        memory/1836-22-0x0000000074A90000-0x0000000075240000-memory.dmp

        memory/1836-150-0x0000000074A90000-0x0000000075240000-memory.dmp

        memory/1836-130-0x0000000070DB0000-0x0000000070DFC000-memory.dmp

        memory/1836-149-0x0000000007580000-0x0000000007623000-memory.dmp

        memory/1836-151-0x000000007F6C0000-0x000000007F6D0000-memory.dmp

        memory/1836-90-0x0000000006620000-0x000000000666C000-memory.dmp

        memory/1836-152-0x0000000007ED0000-0x000000000854A000-memory.dmp

        memory/1836-171-0x0000000074A90000-0x0000000075240000-memory.dmp

        memory/1836-155-0x0000000002C40000-0x0000000002C50000-memory.dmp

        memory/1836-24-0x0000000002C40000-0x0000000002C50000-memory.dmp

        memory/1836-27-0x0000000005F20000-0x0000000005F86000-memory.dmp

        memory/1836-42-0x0000000005F90000-0x00000000062E4000-memory.dmp

        memory/1836-163-0x0000000007BD0000-0x0000000007BD8000-memory.dmp

        memory/1836-25-0x0000000005510000-0x0000000005532000-memory.dmp

        memory/1836-161-0x0000000007BF0000-0x0000000007C0A000-memory.dmp

        memory/3180-20-0x0000000005190000-0x00000000051A0000-memory.dmp

        memory/3180-114-0x000000007F510000-0x000000007F520000-memory.dmp

        memory/3180-158-0x0000000007C40000-0x0000000007C4E000-memory.dmp

        memory/3180-19-0x0000000005190000-0x00000000051A0000-memory.dmp

        memory/3180-156-0x0000000007C80000-0x0000000007D16000-memory.dmp

        memory/3180-170-0x0000000074A90000-0x0000000075240000-memory.dmp

        memory/3180-21-0x00000000057D0000-0x0000000005DF8000-memory.dmp

        memory/3180-75-0x00000000066F0000-0x000000000670E000-memory.dmp

        memory/3180-26-0x0000000005ED0000-0x0000000005F36000-memory.dmp

        memory/3180-159-0x0000000007C50000-0x0000000007C64000-memory.dmp

        memory/3180-157-0x0000000007C20000-0x0000000007C31000-memory.dmp

        memory/3180-18-0x0000000074A90000-0x0000000075240000-memory.dmp

        memory/3180-17-0x00000000050F0000-0x0000000005126000-memory.dmp

        memory/3180-116-0x00000000076C0000-0x00000000076F2000-memory.dmp

        memory/3180-108-0x0000000074A90000-0x0000000075240000-memory.dmp

        memory/3180-110-0x0000000005190000-0x00000000051A0000-memory.dmp

        memory/3180-119-0x0000000070DB0000-0x0000000070DFC000-memory.dmp

        memory/3180-111-0x0000000005190000-0x00000000051A0000-memory.dmp

        memory/3180-118-0x0000000005190000-0x00000000051A0000-memory.dmp

        memory/3436-51-0x0000000074A90000-0x0000000075240000-memory.dmp

        memory/3436-7-0x0000000005390000-0x00000000053E6000-memory.dmp

        memory/3436-3-0x0000000005800000-0x0000000005DA4000-memory.dmp

        memory/3436-11-0x0000000006CA0000-0x0000000006D74000-memory.dmp

        memory/3436-0-0x0000000074A90000-0x0000000075240000-memory.dmp

        memory/3436-4-0x00000000052F0000-0x0000000005382000-memory.dmp

        memory/3436-5-0x00000000054A0000-0x00000000054B0000-memory.dmp

        memory/3436-1-0x00000000006B0000-0x00000000007B4000-memory.dmp

        memory/3436-6-0x0000000005250000-0x000000000525A000-memory.dmp

        memory/3436-12-0x00000000069D0000-0x0000000006A38000-memory.dmp

        memory/3436-8-0x0000000005450000-0x0000000005468000-memory.dmp

        memory/3436-9-0x0000000074A90000-0x0000000075240000-memory.dmp

        memory/3436-2-0x00000000051B0000-0x000000000524C000-memory.dmp

        memory/3436-10-0x00000000054A0000-0x00000000054B0000-memory.dmp

        memory/4864-28-0x0000000000400000-0x000000000045B000-memory.dmp

        memory/4864-160-0x0000000000400000-0x000000000045B000-memory.dmp

        memory/4864-41-0x0000000000400000-0x000000000045B000-memory.dmp

        memory/5036-129-0x0000000006C30000-0x0000000006C4E000-memory.dmp

        memory/5036-54-0x0000000074A90000-0x0000000075240000-memory.dmp

        memory/5036-56-0x00000000053C0000-0x00000000053D0000-memory.dmp

        memory/5036-57-0x00000000053C0000-0x00000000053D0000-memory.dmp

        memory/5036-162-0x0000000074A90000-0x0000000075240000-memory.dmp

        memory/5036-154-0x00000000079E0000-0x00000000079EA000-memory.dmp

        memory/5036-153-0x0000000007970000-0x000000000798A000-memory.dmp

        memory/5036-115-0x000000007F5A0000-0x000000007F5B0000-memory.dmp

        memory/5036-109-0x00000000053C0000-0x00000000053D0000-memory.dmp

        memory/5036-169-0x0000000074A90000-0x0000000075240000-memory.dmp

        memory/5036-117-0x0000000070DB0000-0x0000000070DFC000-memory.dmp