Analysis

  • max time kernel
    151s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    20-04-2022 04:25

General

  • Target

    354852369f73c1ea5373b80d41dcea51da050314e4166f6db31d77708181630d.exe

  • Size

    1.1MB

  • MD5

    0030b152a3b0a429ea3389f6b739c2a0

  • SHA1

    46452a95e92729737ec83db171ac45f68380678d

  • SHA256

    354852369f73c1ea5373b80d41dcea51da050314e4166f6db31d77708181630d

  • SHA512

    e57e7c31cba09c52c502fec24a5c21db34cd8471b471c6e6f50104bba5e25e0326cf4868bc63150ead362f9670405f25b557274b3bbd5df1e85a88c4980c74ea

Malware Config

Signatures

  • MassLogger

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

  • MassLogger Main Payload 2 IoCs
  • Executes dropped EXE 3 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Drops startup file 1 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 2 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). Likely ransomware behaviour.

  • Modifies registry class 6 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\354852369f73c1ea5373b80d41dcea51da050314e4166f6db31d77708181630d.exe
    "C:\Users\Admin\AppData\Local\Temp\354852369f73c1ea5373b80d41dcea51da050314e4166f6db31d77708181630d.exe"
    1⤵
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:3664
    • C:\Windows\SysWOW64\notepad.exe
      "C:\Windows\system32\notepad.exe"
      2⤵
      • Drops startup file
      • NTFS ADS
      • Suspicious use of WriteProcessMemory
      PID:1280
      • C:\Users\Admin\AppData\Roaming\AppData\iuytbf.exe
        "C:\Users\Admin\AppData\Roaming\AppData\iuytbf.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Modifies registry class
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious behavior: MapViewOfSection
        • Suspicious use of WriteProcessMemory
        PID:960
        • C:\Users\Admin\AppData\Roaming\AppData\iuytbf.exe
          "C:\Users\Admin\AppData\Roaming\AppData\iuytbf.exe"
          4⤵
          • Executes dropped EXE
          • Checks computer location settings
          • Accesses Microsoft Outlook profiles
          • Suspicious behavior: AddClipboardFormatListener
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of SetWindowsHookEx
          • outlook_office_path
          • outlook_win_path
          PID:2756
        • C:\Users\Admin\AppData\Roaming\AppData\iuytbf.exe
          "C:\Users\Admin\AppData\Roaming\AppData\iuytbf.exe" 2 2756 240551078
          4⤵
          • Executes dropped EXE
          • Modifies registry class
          • Suspicious behavior: EnumeratesProcesses
          PID:1868

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Roaming\AppData\iuytbf.exe

    Filesize

    1.1MB

    MD5

    0030b152a3b0a429ea3389f6b739c2a0

    SHA1

    46452a95e92729737ec83db171ac45f68380678d

    SHA256

    354852369f73c1ea5373b80d41dcea51da050314e4166f6db31d77708181630d

    SHA512

    e57e7c31cba09c52c502fec24a5c21db34cd8471b471c6e6f50104bba5e25e0326cf4868bc63150ead362f9670405f25b557274b3bbd5df1e85a88c4980c74ea

  • C:\Users\Admin\AppData\Roaming\AppData\iuytbf.exe

    Filesize

    1.1MB

    MD5

    0030b152a3b0a429ea3389f6b739c2a0

    SHA1

    46452a95e92729737ec83db171ac45f68380678d

    SHA256

    354852369f73c1ea5373b80d41dcea51da050314e4166f6db31d77708181630d

    SHA512

    e57e7c31cba09c52c502fec24a5c21db34cd8471b471c6e6f50104bba5e25e0326cf4868bc63150ead362f9670405f25b557274b3bbd5df1e85a88c4980c74ea

  • C:\Users\Admin\AppData\Roaming\AppData\iuytbf.exe

    Filesize

    1.1MB

    MD5

    0030b152a3b0a429ea3389f6b739c2a0

    SHA1

    46452a95e92729737ec83db171ac45f68380678d

    SHA256

    354852369f73c1ea5373b80d41dcea51da050314e4166f6db31d77708181630d

    SHA512

    e57e7c31cba09c52c502fec24a5c21db34cd8471b471c6e6f50104bba5e25e0326cf4868bc63150ead362f9670405f25b557274b3bbd5df1e85a88c4980c74ea

  • C:\Users\Admin\AppData\Roaming\AppData\iuytbf.exe

    Filesize

    1.1MB

    MD5

    0030b152a3b0a429ea3389f6b739c2a0

    SHA1

    46452a95e92729737ec83db171ac45f68380678d

    SHA256

    354852369f73c1ea5373b80d41dcea51da050314e4166f6db31d77708181630d

    SHA512

    e57e7c31cba09c52c502fec24a5c21db34cd8471b471c6e6f50104bba5e25e0326cf4868bc63150ead362f9670405f25b557274b3bbd5df1e85a88c4980c74ea

  • memory/960-131-0x0000000000000000-mapping.dmp

  • memory/960-135-0x0000000004C90000-0x0000000004CA3000-memory.dmp

    Filesize

    76KB

  • memory/1280-130-0x0000000000000000-mapping.dmp

  • memory/1868-138-0x0000000000000000-mapping.dmp

  • memory/2756-146-0x0000000000BF2000-0x0000000000BF3000-memory.dmp

    Filesize

    4KB

  • memory/2756-148-0x0000000000BF2000-0x0000000000BF3000-memory.dmp

    Filesize

    4KB

  • memory/2756-141-0x0000000000980000-0x0000000000A06000-memory.dmp

    Filesize

    536KB

  • memory/2756-143-0x0000000000BF2000-0x0000000000BF3000-memory.dmp

    Filesize

    4KB

  • memory/2756-142-0x0000000000BF2000-0x0000000000BF3000-memory.dmp

    Filesize

    4KB

  • memory/2756-144-0x0000000000BF2000-0x0000000000BF3000-memory.dmp

    Filesize

    4KB

  • memory/2756-136-0x0000000000000000-mapping.dmp

  • memory/2756-145-0x0000000000BF2000-0x0000000000BF3000-memory.dmp

    Filesize

    4KB

  • memory/2756-147-0x0000000000BF2000-0x0000000000BF3000-memory.dmp

    Filesize

    4KB

  • memory/2756-140-0x0000000000980000-0x0000000000A06000-memory.dmp

    Filesize

    536KB

  • memory/2756-149-0x0000000000BF2000-0x0000000000BF3000-memory.dmp

    Filesize

    4KB

  • memory/2756-150-0x0000000000BF2000-0x0000000000BF3000-memory.dmp

    Filesize

    4KB

  • memory/2756-151-0x0000000000BF2000-0x0000000000BF3000-memory.dmp

    Filesize

    4KB

  • memory/2756-154-0x0000000004EC0000-0x0000000004F52000-memory.dmp

    Filesize

    584KB

  • memory/2756-155-0x0000000005390000-0x0000000005934000-memory.dmp

    Filesize

    5.6MB

  • memory/2756-156-0x0000000005D80000-0x0000000005DE6000-memory.dmp

    Filesize

    408KB

  • memory/2756-157-0x0000000006640000-0x0000000006690000-memory.dmp

    Filesize

    320KB

  • memory/2756-158-0x0000000006630000-0x000000000663A000-memory.dmp

    Filesize

    40KB

  • memory/2756-160-0x00000000029D0000-0x00000000029E0000-memory.dmp

    Filesize

    64KB

  • memory/2756-159-0x00000000067C0000-0x000000000685C000-memory.dmp

    Filesize

    624KB