Analysis

  • max time kernel
    148s
  • max time network
    149s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    26-09-2024 15:53

General

  • Target

    ae72b0b7e4c361d0016ed97ac0664e0c8f3d31dd9627c993b635b5fac24d7255.exe

  • Size

    885KB

  • MD5

    44fa8131343f26aaf5303090d7bba260

  • SHA1

    6ae8634d960f8e659ad166d4e1d95297ac114de3

  • SHA256

    ae72b0b7e4c361d0016ed97ac0664e0c8f3d31dd9627c993b635b5fac24d7255

  • SHA512

    90ba08e0cc3b8cc1f9dbe401e07110c667354a39dd52ffbaa7f2cbbea93bb99d783fb48bec60f759cafcc1e9d3b74d7d5db359c15dd48b4198608f6ee0e77a1d

  • SSDEEP

    12288:0SX+8K/4lBlrzDUw8s9pVdsVSEy202NKu8SnTo/Yj40Eg1grROuYFRl115yzuwdL:0J4fZDUw8YpVds9mt0o/Y7gMVvTy

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

104.250.180.178:7902

Attributes
  • audio_folder

    MicRecords

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    1

  • copy_file

    Adobe.exe

  • copy_folder

    Adobe

  • delete_file

    false

  • hide_file

    false

  • hide_keylog_file

    false

  • install_flag

    true

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • mouse_option

    false

  • mutex

    Adobe-OTOIRK

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Signatures

  • Remcos

    Remcos is a closed-source remote control and surveillance software.

  • Detected Nirsoft tools 3 IoCs

    Free utilities often used by attackers which can steal passwords, product keys, etc.

  • NirSoft MailPassView 1 IoCs

    Password recovery tool for various email clients

  • NirSoft WebBrowserPassView 1 IoCs

    Password recovery tool for various web browsers

  • Executes dropped EXE 10 IoCs
  • Loads dropped DLL 1 IoCs
  • Reads user/profile data of web browsers 3 TTPs

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

  • Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs
  • Adds Run key to start application 2 TTPs 4 IoCs
  • Suspicious use of SetThreadContext 5 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 7 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious behavior: MapViewOfSection 7 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\ae72b0b7e4c361d0016ed97ac0664e0c8f3d31dd9627c993b635b5fac24d7255.exe
    "C:\Users\Admin\AppData\Local\Temp\ae72b0b7e4c361d0016ed97ac0664e0c8f3d31dd9627c993b635b5fac24d7255.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2696
    • C:\Users\Admin\AppData\Local\Temp\ae72b0b7e4c361d0016ed97ac0664e0c8f3d31dd9627c993b635b5fac24d7255.exe
      "C:\Users\Admin\AppData\Local\Temp\ae72b0b7e4c361d0016ed97ac0664e0c8f3d31dd9627c993b635b5fac24d7255.exe"
      2⤵
      • Loads dropped DLL
      • Adds Run key to start application
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2964
      • C:\ProgramData\Adobe\Adobe.exe
        "C:\ProgramData\Adobe\Adobe.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:2744
        • C:\ProgramData\Adobe\Adobe.exe
          "C:\ProgramData\Adobe\Adobe.exe"
          4⤵
          • Executes dropped EXE
          PID:2664
        • C:\ProgramData\Adobe\Adobe.exe
          "C:\ProgramData\Adobe\Adobe.exe"
          4⤵
          • Executes dropped EXE
          • Adds Run key to start application
          • Suspicious use of SetThreadContext
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: MapViewOfSection
          • Suspicious use of WriteProcessMemory
          PID:2868
          • C:\ProgramData\Adobe\Adobe.exe
            C:\ProgramData\Adobe\Adobe.exe /stext "C:\Users\Admin\AppData\Local\Temp\gcsamjmerslwthfwxcbzxdwxpertbenwbo"
            5⤵
            • Executes dropped EXE
            PID:2148
          • C:\ProgramData\Adobe\Adobe.exe
            C:\ProgramData\Adobe\Adobe.exe /stext "C:\Users\Admin\AppData\Local\Temp\gcsamjmerslwthfwxcbzxdwxpertbenwbo"
            5⤵
            • Executes dropped EXE
            PID:1868
          • C:\ProgramData\Adobe\Adobe.exe
            C:\ProgramData\Adobe\Adobe.exe /stext "C:\Users\Admin\AppData\Local\Temp\gcsamjmerslwthfwxcbzxdwxpertbenwbo"
            5⤵
            • Executes dropped EXE
            PID:1528
          • C:\ProgramData\Adobe\Adobe.exe
            C:\ProgramData\Adobe\Adobe.exe /stext "C:\Users\Admin\AppData\Local\Temp\gcsamjmerslwthfwxcbzxdwxpertbenwbo"
            5⤵
            • Executes dropped EXE
            • System Location Discovery: System Language Discovery
            • Suspicious behavior: EnumeratesProcesses
            PID:2076
          • C:\ProgramData\Adobe\Adobe.exe
            C:\ProgramData\Adobe\Adobe.exe /stext "C:\Users\Admin\AppData\Local\Temp\iwxtnb"
            5⤵
            • Executes dropped EXE
            PID:1980
          • C:\ProgramData\Adobe\Adobe.exe
            C:\ProgramData\Adobe\Adobe.exe /stext "C:\Users\Admin\AppData\Local\Temp\iwxtnb"
            5⤵
            • Executes dropped EXE
            • Accesses Microsoft Outlook accounts
            • System Location Discovery: System Language Discovery
            PID:1592
          • C:\ProgramData\Adobe\Adobe.exe
            C:\ProgramData\Adobe\Adobe.exe /stext "C:\Users\Admin\AppData\Local\Temp\sykmnuizt"
            5⤵
            • Executes dropped EXE
            • System Location Discovery: System Language Discovery
            • Suspicious use of AdjustPrivilegeToken
            PID:1540

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\ProgramData\Adobe\Adobe.exe

    Filesize

    885KB

    MD5

    44fa8131343f26aaf5303090d7bba260

    SHA1

    6ae8634d960f8e659ad166d4e1d95297ac114de3

    SHA256

    ae72b0b7e4c361d0016ed97ac0664e0c8f3d31dd9627c993b635b5fac24d7255

    SHA512

    90ba08e0cc3b8cc1f9dbe401e07110c667354a39dd52ffbaa7f2cbbea93bb99d783fb48bec60f759cafcc1e9d3b74d7d5db359c15dd48b4198608f6ee0e77a1d

  • C:\Users\Admin\AppData\Local\Temp\gcsamjmerslwthfwxcbzxdwxpertbenwbo

    Filesize

    2B

    MD5

    f3b25701fe362ec84616a93a45ce9998

    SHA1

    d62636d8caec13f04e28442a0a6fa1afeb024bbb

    SHA256

    b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

    SHA512

    98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

  • memory/1540-83-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB

  • memory/1540-80-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB

  • memory/1540-78-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB

  • memory/1540-77-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/1592-75-0x0000000000400000-0x0000000000462000-memory.dmp

    Filesize

    392KB

  • memory/1592-85-0x0000000000400000-0x0000000000462000-memory.dmp

    Filesize

    392KB

  • memory/1592-81-0x0000000000400000-0x0000000000462000-memory.dmp

    Filesize

    392KB

  • memory/2076-70-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2076-71-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/2076-82-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/2076-84-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/2696-6-0x00000000057A0000-0x0000000005860000-memory.dmp

    Filesize

    768KB

  • memory/2696-27-0x0000000074630000-0x0000000074D1E000-memory.dmp

    Filesize

    6.9MB

  • memory/2696-5-0x0000000074630000-0x0000000074D1E000-memory.dmp

    Filesize

    6.9MB

  • memory/2696-4-0x000000007463E000-0x000000007463F000-memory.dmp

    Filesize

    4KB

  • memory/2696-3-0x00000000004E0000-0x00000000004F0000-memory.dmp

    Filesize

    64KB

  • memory/2696-2-0x0000000074630000-0x0000000074D1E000-memory.dmp

    Filesize

    6.9MB

  • memory/2696-1-0x0000000001100000-0x00000000011E4000-memory.dmp

    Filesize

    912KB

  • memory/2696-0-0x000000007463E000-0x000000007463F000-memory.dmp

    Filesize

    4KB

  • memory/2744-60-0x0000000074630000-0x0000000074D1E000-memory.dmp

    Filesize

    6.9MB

  • memory/2744-34-0x0000000000190000-0x0000000000274000-memory.dmp

    Filesize

    912KB

  • memory/2744-35-0x0000000074630000-0x0000000074D1E000-memory.dmp

    Filesize

    6.9MB

  • memory/2744-36-0x0000000074630000-0x0000000074D1E000-memory.dmp

    Filesize

    6.9MB

  • memory/2868-59-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2868-66-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2868-58-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2868-61-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2868-62-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2868-63-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2868-64-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2868-91-0x0000000010000000-0x0000000010019000-memory.dmp

    Filesize

    100KB

  • memory/2868-54-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2868-98-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2868-96-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2868-94-0x0000000010000000-0x0000000010019000-memory.dmp

    Filesize

    100KB

  • memory/2868-95-0x0000000010000000-0x0000000010019000-memory.dmp

    Filesize

    100KB

  • memory/2868-57-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2964-13-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2964-17-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2964-21-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2964-25-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2964-23-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2964-7-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2964-15-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2964-11-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2964-9-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2964-8-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2964-19-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB