Analysis

  • max time kernel
    151s
  • max time network
    132s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230220-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
  • submitted
    12-06-2023 07:16

General

  • Target

    e37fb378417b8fc6a9871251030b3294fedecf4608d528f4cfddac6a8005f164.exe

  • Size

    946KB

  • MD5

    7d7b37ae6ef1219f3094f2cf6206d29a

  • SHA1

    54fa5fd704ad0d67d27ae163d752fac1cc1c95be

  • SHA256

    e37fb378417b8fc6a9871251030b3294fedecf4608d528f4cfddac6a8005f164

  • SHA512

    b6357a18ebaa24c036f1e7cc6a37923a1b732531d20b47f4be88af983a744d8cd19e9e5d9d081c2f39735fc37c0734b28f9fae6deac2d0587d9bf9d6dedb5acc

  • SSDEEP

    24576:/1s40GUw9hXVWvcvocIGEUYbC/B391IbV4:/b0o9CIp2bC/B39kV4

Malware Config

Signatures

  • MassLogger

    Masslogger is a .NET stealer targeting passwords from browsers, email and cryptocurrency clients.

  • MassLogger Main payload 5 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Drops startup file 1 IoCs
  • Executes dropped EXE 3 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • UPX packed file 4 IoCs

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

  • Accesses Microsoft Outlook profiles 1 TTPs 42 IoCs
  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Suspicious use of SetThreadContext 1 IoCs
  • NTFS ADS 1 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\e37fb378417b8fc6a9871251030b3294fedecf4608d528f4cfddac6a8005f164.exe
    "C:\Users\Admin\AppData\Local\Temp\e37fb378417b8fc6a9871251030b3294fedecf4608d528f4cfddac6a8005f164.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:2168
    • C:\Windows\SysWOW64\notepad.exe
      "C:\Windows\system32\notepad.exe"
      2⤵
      • Drops startup file
      • NTFS ADS
      • Suspicious use of WriteProcessMemory
      PID:4360
      • C:\Users\Admin\AppData\Roaming\appdata\fgfkjsh.exe
        "C:\Users\Admin\AppData\Roaming\appdata\fgfkjsh.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious behavior: MapViewOfSection
        • Suspicious use of WriteProcessMemory
        PID:1804
        • C:\Users\Admin\AppData\Roaming\appdata\fgfkjsh.exe
          "C:\Users\Admin\AppData\Roaming\appdata\fgfkjsh.exe"
          4⤵
          • Checks computer location settings
          • Executes dropped EXE
          • Accesses Microsoft Outlook profiles
          • Suspicious behavior: AddClipboardFormatListener
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of SetWindowsHookEx
          • outlook_office_path
          • outlook_win_path
          PID:1536
        • C:\Users\Admin\AppData\Roaming\appdata\fgfkjsh.exe
          "C:\Users\Admin\AppData\Roaming\appdata\fgfkjsh.exe" 2 1536 240590187
          4⤵
          • Executes dropped EXE
          • Suspicious behavior: EnumeratesProcesses
          PID:1428

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Roaming\appdata\fgfkjsh.exe

    Filesize

    946KB

    MD5

    7d7b37ae6ef1219f3094f2cf6206d29a

    SHA1

    54fa5fd704ad0d67d27ae163d752fac1cc1c95be

    SHA256

    e37fb378417b8fc6a9871251030b3294fedecf4608d528f4cfddac6a8005f164

    SHA512

    b6357a18ebaa24c036f1e7cc6a37923a1b732531d20b47f4be88af983a744d8cd19e9e5d9d081c2f39735fc37c0734b28f9fae6deac2d0587d9bf9d6dedb5acc

  • C:\Users\Admin\AppData\Roaming\appdata\fgfkjsh.exe

    Filesize

    946KB

    MD5

    7d7b37ae6ef1219f3094f2cf6206d29a

    SHA1

    54fa5fd704ad0d67d27ae163d752fac1cc1c95be

    SHA256

    e37fb378417b8fc6a9871251030b3294fedecf4608d528f4cfddac6a8005f164

    SHA512

    b6357a18ebaa24c036f1e7cc6a37923a1b732531d20b47f4be88af983a744d8cd19e9e5d9d081c2f39735fc37c0734b28f9fae6deac2d0587d9bf9d6dedb5acc

  • C:\Users\Admin\AppData\Roaming\appdata\fgfkjsh.exe

    Filesize

    946KB

    MD5

    7d7b37ae6ef1219f3094f2cf6206d29a

    SHA1

    54fa5fd704ad0d67d27ae163d752fac1cc1c95be

    SHA256

    e37fb378417b8fc6a9871251030b3294fedecf4608d528f4cfddac6a8005f164

    SHA512

    b6357a18ebaa24c036f1e7cc6a37923a1b732531d20b47f4be88af983a744d8cd19e9e5d9d081c2f39735fc37c0734b28f9fae6deac2d0587d9bf9d6dedb5acc

  • C:\Users\Admin\AppData\Roaming\appdata\fgfkjsh.exe

    Filesize

    946KB

    MD5

    7d7b37ae6ef1219f3094f2cf6206d29a

    SHA1

    54fa5fd704ad0d67d27ae163d752fac1cc1c95be

    SHA256

    e37fb378417b8fc6a9871251030b3294fedecf4608d528f4cfddac6a8005f164

    SHA512

    b6357a18ebaa24c036f1e7cc6a37923a1b732531d20b47f4be88af983a744d8cd19e9e5d9d081c2f39735fc37c0734b28f9fae6deac2d0587d9bf9d6dedb5acc

  • memory/1428-176-0x0000000000400000-0x00000000004F2000-memory.dmp

    Filesize

    968KB

  • memory/1428-159-0x0000000000670000-0x0000000000671000-memory.dmp

    Filesize

    4KB

  • memory/1428-157-0x00000000022E0000-0x00000000022E1000-memory.dmp

    Filesize

    4KB

  • memory/1536-146-0x0000000000400000-0x0000000000541000-memory.dmp

    Filesize

    1.3MB

  • memory/1536-171-0x0000000005120000-0x00000000051BC000-memory.dmp

    Filesize

    624KB

  • memory/1536-195-0x0000000004B10000-0x0000000004B20000-memory.dmp

    Filesize

    64KB

  • memory/1536-150-0x0000000000400000-0x0000000000541000-memory.dmp

    Filesize

    1.3MB

  • memory/1536-152-0x0000000000400000-0x0000000000541000-memory.dmp

    Filesize

    1.3MB

  • memory/1536-155-0x0000000000BB0000-0x0000000000C4A000-memory.dmp

    Filesize

    616KB

  • memory/1536-156-0x0000000000BB0000-0x0000000000C4A000-memory.dmp

    Filesize

    616KB

  • memory/1536-189-0x0000000004B10000-0x0000000004B20000-memory.dmp

    Filesize

    64KB

  • memory/1536-158-0x0000000000400000-0x0000000000541000-memory.dmp

    Filesize

    1.3MB

  • memory/1536-181-0x0000000006970000-0x00000000069C0000-memory.dmp

    Filesize

    320KB

  • memory/1536-170-0x0000000004B20000-0x00000000050C4000-memory.dmp

    Filesize

    5.6MB

  • memory/1536-179-0x0000000004B10000-0x0000000004B20000-memory.dmp

    Filesize

    64KB

  • memory/1536-172-0x0000000005250000-0x00000000052B6000-memory.dmp

    Filesize

    408KB

  • memory/1536-173-0x0000000004B10000-0x0000000004B20000-memory.dmp

    Filesize

    64KB

  • memory/1536-174-0x0000000005630000-0x00000000056C2000-memory.dmp

    Filesize

    584KB

  • memory/1536-175-0x0000000000400000-0x0000000000541000-memory.dmp

    Filesize

    1.3MB

  • memory/1536-178-0x0000000006560000-0x000000000656A000-memory.dmp

    Filesize

    40KB

  • memory/1536-177-0x0000000004B10000-0x0000000004B20000-memory.dmp

    Filesize

    64KB

  • memory/1804-143-0x0000000000690000-0x0000000000691000-memory.dmp

    Filesize

    4KB

  • memory/1804-151-0x0000000000400000-0x00000000004F2000-memory.dmp

    Filesize

    968KB

  • memory/2168-135-0x00000000023B0000-0x00000000023C0000-memory.dmp

    Filesize

    64KB

  • memory/2168-133-0x0000000002270000-0x0000000002271000-memory.dmp

    Filesize

    4KB

  • memory/2168-136-0x0000000000400000-0x00000000004F2000-memory.dmp

    Filesize

    968KB