Analysis

  • max time kernel
    149s
  • max time network
    142s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    01-05-2022 23:48

General

  • Target

    349efe41afe8428972081d9288d3df4a22eccf1858768dc1e7539a666d6f2d5b.exe

  • Size

    896KB

  • MD5

    28e9a283a1280140d5d092547d493d0d

  • SHA1

    e6b30904907f76c91f94569519ef401accfdef5c

  • SHA256

    349efe41afe8428972081d9288d3df4a22eccf1858768dc1e7539a666d6f2d5b

  • SHA512

    3addaadcba17fd0923ff36db062494a3dc8459980f80db4951568ce60085c107b74495682cde9f49e845c87de60cd247ecc0b251b16fa3fbddf2c0f5d22ec501

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.

  • Loads dropped DLL 2 IoCs
  • 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 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
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 7 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 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\349efe41afe8428972081d9288d3df4a22eccf1858768dc1e7539a666d6f2d5b.exe
    "C:\Users\Admin\AppData\Local\Temp\349efe41afe8428972081d9288d3df4a22eccf1858768dc1e7539a666d6f2d5b.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2500
    • C:\Users\Admin\AppData\Local\Temp\349efe41afe8428972081d9288d3df4a22eccf1858768dc1e7539a666d6f2d5b.exe
      "C:\Users\Admin\AppData\Local\Temp\349efe41afe8428972081d9288d3df4a22eccf1858768dc1e7539a666d6f2d5b.exe"
      2⤵
      • Checks computer location settings
      • Accesses Microsoft Outlook profiles
      • Suspicious behavior: AddClipboardFormatListener
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      • outlook_office_path
      • outlook_win_path
      PID:2208
      • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        "powershell" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\349efe41afe8428972081d9288d3df4a22eccf1858768dc1e7539a666d6f2d5b.exe'
        3⤵
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:1712

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\0e9e1b9d-2e60-4da2-9bef-9084f79207a0\D.dll

    Filesize

    94KB

    MD5

    14ff402962ad21b78ae0b4c43cd1f194

    SHA1

    f8a510eb26666e875a5bdd1cadad40602763ad72

    SHA256

    fb9646cb956945bdc503e69645f6b5316d3826b780d3c36738d6b944e884d15b

    SHA512

    daa7a08bf3709119a944bce28f6ebdd24e54a22b18cd9f86a87873e958df121a3881dcdd5e162f6b4e543238c7aef20f657c9830df01d4c79290f7c9a4fcc54b

  • C:\Users\Admin\AppData\Local\Temp\b35bc50e-fc56-4239-a7d0-bb79118b31c9\AgileDotNetRT.dll

    Filesize

    94KB

    MD5

    14ff402962ad21b78ae0b4c43cd1f194

    SHA1

    f8a510eb26666e875a5bdd1cadad40602763ad72

    SHA256

    fb9646cb956945bdc503e69645f6b5316d3826b780d3c36738d6b944e884d15b

    SHA512

    daa7a08bf3709119a944bce28f6ebdd24e54a22b18cd9f86a87873e958df121a3881dcdd5e162f6b4e543238c7aef20f657c9830df01d4c79290f7c9a4fcc54b

  • memory/1712-153-0x00000000075F0000-0x000000000760A000-memory.dmp

    Filesize

    104KB

  • memory/1712-152-0x0000000007C30000-0x00000000082AA000-memory.dmp

    Filesize

    6.5MB

  • memory/1712-157-0x0000000007930000-0x000000000794A000-memory.dmp

    Filesize

    104KB

  • memory/1712-155-0x0000000007870000-0x0000000007906000-memory.dmp

    Filesize

    600KB

  • memory/1712-158-0x0000000007910000-0x0000000007918000-memory.dmp

    Filesize

    32KB

  • memory/1712-154-0x0000000007660000-0x000000000766A000-memory.dmp

    Filesize

    40KB

  • memory/1712-148-0x00000000062F0000-0x000000000630E000-memory.dmp

    Filesize

    120KB

  • memory/1712-156-0x0000000007820000-0x000000000782E000-memory.dmp

    Filesize

    56KB

  • memory/1712-151-0x0000000006890000-0x00000000068AE000-memory.dmp

    Filesize

    120KB

  • memory/1712-150-0x000000006F8A0000-0x000000006F8EC000-memory.dmp

    Filesize

    304KB

  • memory/1712-143-0x0000000004D30000-0x0000000004D66000-memory.dmp

    Filesize

    216KB

  • memory/1712-149-0x00000000068B0000-0x00000000068E2000-memory.dmp

    Filesize

    200KB

  • memory/1712-145-0x0000000005420000-0x0000000005A48000-memory.dmp

    Filesize

    6.2MB

  • memory/1712-146-0x0000000005340000-0x0000000005362000-memory.dmp

    Filesize

    136KB

  • memory/1712-147-0x0000000005B50000-0x0000000005BB6000-memory.dmp

    Filesize

    408KB

  • memory/2208-144-0x0000000006F60000-0x0000000006FFC000-memory.dmp

    Filesize

    624KB

  • memory/2208-142-0x0000000006D60000-0x0000000006D6A000-memory.dmp

    Filesize

    40KB

  • memory/2208-141-0x0000000006D80000-0x0000000006DD0000-memory.dmp

    Filesize

    320KB

  • memory/2208-139-0x0000000006580000-0x00000000065E6000-memory.dmp

    Filesize

    408KB

  • memory/2208-138-0x0000000000400000-0x0000000000486000-memory.dmp

    Filesize

    536KB

  • memory/2500-130-0x0000000000CE0000-0x0000000000DC6000-memory.dmp

    Filesize

    920KB

  • memory/2500-135-0x0000000073010000-0x0000000073099000-memory.dmp

    Filesize

    548KB

  • memory/2500-133-0x0000000005890000-0x0000000005922000-memory.dmp

    Filesize

    584KB

  • memory/2500-132-0x0000000005770000-0x00000000057B4000-memory.dmp

    Filesize

    272KB

  • memory/2500-131-0x0000000005E40000-0x00000000063E4000-memory.dmp

    Filesize

    5.6MB