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Resubmissions

01/03/2025, 18:58

250301-xmhhrayp15 10

01/03/2025, 18:55

250301-xkqrcaypx7 10

Analysis

  • max time kernel
    91s
  • max time network
    156s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    04/12/2024, 19:31

General

  • Target

    mouse_2.exe

  • Size

    984KB

  • MD5

    af8ab92992ccc4cc6a637953836edf93

  • SHA1

    ac17c77cae31fdfeb618b0083285ba869baf29fc

  • SHA256

    03968a3a5a7a880feefca31686fcfbed445080a0c06eda2b6d623757179b782c

  • SHA512

    9dc3bdfe45f9333d62ef3b0aaf3860a9ef1e94ced02ed0437d3ac2f96b3b9aacf6e621703f13d62f356bd50dec84cc3a3dc787a8a14c9ce0ceeed9ff63c45ad2

  • SSDEEP

    24576:iNg+tKkEYA7Gmvv/HGsvPw9vz/DrELE7VUH:0g4K7YA7vvRMbcLa

Malware Config

Signatures

  • MassLogger

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

  • MassLogger Main payload 1 IoCs
  • Masslogger family
  • ReZer0 packer 1 IoCs

    Detects ReZer0, a packer with multiple versions used in various campaigns.

  • Checks computer location settings 2 TTPs 2 IoCs

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

  • Reads user/profile data of web browsers 3 TTPs

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

  • Accesses Microsoft Outlook profiles 1 TTPs 18 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
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

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

  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\mouse_2.exe
    "C:\Users\Admin\AppData\Local\Temp\mouse_2.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3156
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\aqkfZm" /XML "C:\Users\Admin\AppData\Local\Temp\tmpCFFD.tmp"
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:4468
    • C:\Users\Admin\AppData\Local\Temp\mouse_2.exe
      "{path}"
      2⤵
      • Checks computer location settings
      • Accesses Microsoft Outlook profiles
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: AddClipboardFormatListener
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • outlook_office_path
      • outlook_win_path
      PID:4720

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\mouse_2.exe.log

    Filesize

    1KB

    MD5

    400f1cc1a0a0ce1cdabda365ab3368ce

    SHA1

    1ecf683f14271d84f3b6063493dce00ff5f42075

    SHA256

    c8fa64f4b69df13ed6408fd4a204f318a36c2f38c85d4a4d42adfc9173f73765

    SHA512

    14c8cfd58d097e5e89c8cabe1e665173f1ccf604a9ef70cdcb84116e265f90819c19c891be408e0ad7e29086a5c2ea2883b7a7d1184878dbbac63e2cabcd1c45

  • C:\Users\Admin\AppData\Local\Temp\tmpCFFD.tmp

    Filesize

    1KB

    MD5

    ab6ef14bbdee8c6ad96136f5c675f0e1

    SHA1

    b037ff482478fda0a5ee4e7054658a4a5e3cf74b

    SHA256

    228fb9edb9559964f1a50a48e044f24be3ac2c9c84e0c6d3e5791e7d4e2eb3d4

    SHA512

    f5b26b8330f2d9a36dfcf245531382e9a329136267aa71033f7603f1976796bde468c40e9b1d1938d7d165ade9206f5461ba4271295a6de28cb4b2b2dc7aa57a

  • memory/3156-6-0x0000000005B60000-0x0000000005B6A000-memory.dmp

    Filesize

    40KB

  • memory/3156-1-0x0000000000F30000-0x000000000102C000-memory.dmp

    Filesize

    1008KB

  • memory/3156-4-0x000000000B3A0000-0x000000000B432000-memory.dmp

    Filesize

    584KB

  • memory/3156-5-0x00000000750C0000-0x0000000075870000-memory.dmp

    Filesize

    7.7MB

  • memory/3156-0-0x00000000750CE000-0x00000000750CF000-memory.dmp

    Filesize

    4KB

  • memory/3156-7-0x0000000006A90000-0x0000000006A98000-memory.dmp

    Filesize

    32KB

  • memory/3156-2-0x0000000007F40000-0x0000000008000000-memory.dmp

    Filesize

    768KB

  • memory/3156-9-0x00000000750C0000-0x0000000075870000-memory.dmp

    Filesize

    7.7MB

  • memory/3156-10-0x0000000007160000-0x00000000071FC000-memory.dmp

    Filesize

    624KB

  • memory/3156-11-0x0000000007380000-0x000000000742E000-memory.dmp

    Filesize

    696KB

  • memory/3156-3-0x000000000B7B0000-0x000000000BD54000-memory.dmp

    Filesize

    5.6MB

  • memory/3156-8-0x00000000750CE000-0x00000000750CF000-memory.dmp

    Filesize

    4KB

  • memory/3156-21-0x00000000750C0000-0x0000000075870000-memory.dmp

    Filesize

    7.7MB

  • memory/4720-18-0x00000000750C0000-0x0000000075870000-memory.dmp

    Filesize

    7.7MB

  • memory/4720-19-0x00000000053B0000-0x00000000053F4000-memory.dmp

    Filesize

    272KB

  • memory/4720-20-0x00000000750C0000-0x0000000075870000-memory.dmp

    Filesize

    7.7MB

  • memory/4720-15-0x0000000000400000-0x00000000004A8000-memory.dmp

    Filesize

    672KB

  • memory/4720-22-0x00000000056D0000-0x0000000005736000-memory.dmp

    Filesize

    408KB

  • memory/4720-23-0x00000000750C0000-0x0000000075870000-memory.dmp

    Filesize

    7.7MB

  • memory/4720-31-0x00000000750C0000-0x0000000075870000-memory.dmp

    Filesize

    7.7MB

  • memory/4720-35-0x0000000008080000-0x00000000080D0000-memory.dmp

    Filesize

    320KB

  • memory/4720-36-0x00000000750C0000-0x0000000075870000-memory.dmp

    Filesize

    7.7MB

  • memory/4720-37-0x00000000750C0000-0x0000000075870000-memory.dmp

    Filesize

    7.7MB

  • memory/4720-48-0x00000000750C0000-0x0000000075870000-memory.dmp

    Filesize

    7.7MB