Resubmissions

12-08-2024 19:06

240812-xsap4azbla 10

11-08-2024 10:57

240811-m2gjws1arh 10

Analysis

  • max time kernel
    119s
  • max time network
    120s
  • platform
    windows7_x64
  • resource
    win7-20240708-en
  • resource tags

    arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
  • submitted
    11-08-2024 10:57

General

  • Target

    file.exe

  • Size

    795KB

  • MD5

    244ff9e90106994d5a14add8e8483484

  • SHA1

    42a9a0fec6267a15752beb06d838ea21eaefed75

  • SHA256

    655d4b33dd95b286d546c78a9e26e33c3b16b779d5cfb41b62250cb059ae1301

  • SHA512

    3b727ab0e410ff276688196199bb29b26d87734c85f93181784a5e4170decfc7467aa02d1c178c81e1fddd37638567af1045e9c9f1d0bb689f53e18baf03f867

  • SSDEEP

    12288:QZpTV9DFHzw7NU0EXN0c1qRcDnftLEY2D94ymrdbWF9mrgxTmta6GNfnEHLmmJ0:ipTp+kPcRIftn2D94ymp6FqgxkGFaN

Malware Config

Signatures

  • MassLogger

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

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

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

  • Looks up external IP address via web service 1 IoCs

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

  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 2 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: EnumeratesProcesses 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\file.exe
    "C:\Users\Admin\AppData\Local\Temp\file.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2852
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\UXABia" /XML "C:\Users\Admin\AppData\Local\Temp\tmpE9C3.tmp"
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:2084
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2852 -s 1600
      2⤵
      • Program crash
      PID:2360

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmpE9C3.tmp

    Filesize

    1KB

    MD5

    838038852acd401e56a93028ef60e555

    SHA1

    d941f20c01f25d4fd4c46427887ed8a9c8c39fc5

    SHA256

    3f717884b7b7966638c250430832352207b4f52c0454270f424c4fa2de0252dd

    SHA512

    717c92074c02f7f6620e9832896628663e9223e90ce6ff8526957d409c310211af2b062c3ec0fed456c584ff1a184b10cb6585c5e83c08ea0f928f14317f1123

  • memory/2852-0-0x000000007485E000-0x000000007485F000-memory.dmp

    Filesize

    4KB

  • memory/2852-1-0x0000000000F90000-0x000000000105C000-memory.dmp

    Filesize

    816KB

  • memory/2852-2-0x0000000074850000-0x0000000074F3E000-memory.dmp

    Filesize

    6.9MB

  • memory/2852-3-0x00000000004B0000-0x00000000004B8000-memory.dmp

    Filesize

    32KB

  • memory/2852-4-0x0000000074850000-0x0000000074F3E000-memory.dmp

    Filesize

    6.9MB

  • memory/2852-5-0x0000000005310000-0x00000000053C0000-memory.dmp

    Filesize

    704KB

  • memory/2852-9-0x0000000008970000-0x0000000008A18000-memory.dmp

    Filesize

    672KB

  • memory/2852-10-0x0000000002550000-0x0000000002594000-memory.dmp

    Filesize

    272KB