Analysis

  • max time kernel
    149s
  • max time network
    139s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    19-12-2024 06:03

General

  • Target

    febb47ebfc843b8152c26ab3382ea059_JaffaCakes118.exe

  • Size

    1.1MB

  • MD5

    febb47ebfc843b8152c26ab3382ea059

  • SHA1

    ae01779d928f053c997e536b073f2ee4ec034b0d

  • SHA256

    d7511047d6d0127108e1cf026c3a8c7d5dbb860d62722371d4c3f65c3c1dc920

  • SHA512

    011d8a03b98a329f856c5b759eaa8e91cbfc930b25ba66439e2444852912e9c445d9dc4d5487965cf96a3e27fac4054bd766d197400dc82fec3e0ed1d451e5db

  • SSDEEP

    24576:dKpPp9AR95ykxiTXesSdJwjG1XaD1dv2delN/KHoaHEnj/a0hR9:6PpKRykw8dCjEAdv2Y+e/tH

Malware Config

Extracted

Family

remcos

Version

3.2.0 Pro

Botnet

RemoteHost

C2

45.137.22.101:5888

Attributes
  • audio_folder

    MicRecords

  • audio_path

    %AppData%

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    1

  • copy_file

    remcos.exe

  • copy_folder

    Remcos

  • delete_file

    false

  • hide_file

    false

  • hide_keylog_file

    false

  • install_flag

    false

  • install_path

    %AppData%

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • keylog_path

    %AppData%

  • mouse_option

    false

  • mutex

    Remcos-3RVIAE

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • startup_value

    Remcos

  • take_screenshot_option

    false

  • take_screenshot_time

    5

  • take_screenshot_title

    notepad;solitaire;

Signatures

  • Detect Neshta payload 4 IoCs
  • Neshta

    Malware from the neshta family is designed to infect itself into other files to spread itself and cause damage.

  • Neshta family
  • Remcos

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

  • Remcos family
  • Looks for VirtualBox Guest Additions in registry 2 TTPs 1 IoCs
  • Looks for VMWare Tools registry key 2 TTPs 1 IoCs
  • Checks BIOS information in registry 2 TTPs 2 IoCs

    BIOS information is often read in order to detect sandboxing environments.

  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 2 IoCs
  • Modifies system executable filetype association 2 TTPs 1 IoCs
  • Reads user/profile data of web browsers 3 TTPs

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

  • Uses the VBS compiler for execution 1 TTPs
  • Maps connected drives based on registry 3 TTPs 2 IoCs

    Disk information is often read in order to detect sandboxing environments.

  • Suspicious use of SetThreadContext 1 IoCs
  • Drops file in Program Files directory 64 IoCs
  • Drops file in Windows directory 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 5 IoCs

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

  • Modifies registry class 1 IoCs
  • 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 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 33 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\febb47ebfc843b8152c26ab3382ea059_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\febb47ebfc843b8152c26ab3382ea059_JaffaCakes118.exe"
    1⤵
    • Loads dropped DLL
    • Modifies system executable filetype association
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • System Location Discovery: System Language Discovery
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:2872
    • C:\Users\Admin\AppData\Local\Temp\3582-490\febb47ebfc843b8152c26ab3382ea059_JaffaCakes118.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\febb47ebfc843b8152c26ab3382ea059_JaffaCakes118.exe"
      2⤵
      • Looks for VirtualBox Guest Additions in registry
      • Looks for VMWare Tools registry key
      • Checks BIOS information in registry
      • Executes dropped EXE
      • Maps connected drives based on registry
      • Suspicious use of SetThreadContext
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1032
      • C:\Windows\svchost.com
        "C:\Windows\svchost.com" "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\kzqTuNuE" /XML "C:\Users\Admin\AppData\Local\Temp\tmp26C2.tmp"
        3⤵
        • Executes dropped EXE
        • Drops file in Windows directory
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:2464
        • C:\Windows\SysWOW64\schtasks.exe
          C:\Windows\System32\schtasks.exe /Create /TN Updates\kzqTuNuE /XML C:\Users\Admin\AppData\Local\Temp\tmp26C2.tmp
          4⤵
          • System Location Discovery: System Language Discovery
          • Scheduled Task/Job: Scheduled Task
          PID:796
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
        "C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"
        3⤵
          PID:2056
        • C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
          "C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"
          3⤵
            PID:372
          • C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
            "C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"
            3⤵
            • System Location Discovery: System Language Discovery
            PID:1780

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\MSOCache\ALLUSE~1\{90140~1\dwtrig20.exe

        Filesize

        547KB

        MD5

        cf6c595d3e5e9667667af096762fd9c4

        SHA1

        9bb44da8d7f6457099cb56e4f7d1026963dce7ce

        SHA256

        593e60cc30ae0789448547195af77f550387f6648d45847ea244dd0dd7abf03d

        SHA512

        ff4f789df9e6a6d0fbe12b3250f951fcf11e857906c65e96a30bb46266e7e1180d6103a03db2f3764e0d1346b2de7afba8259ba080057e4a268e45e8654dfa80

      • C:\Users\Admin\AppData\Local\Temp\tmp5023.tmp

        Filesize

        8B

        MD5

        3055a963748c8b9b6b9d70af4e78d6b8

        SHA1

        9015dee8497c542b9e8104e9a20616f135305fd7

        SHA256

        13857a94b38f316b948b75ccb42d06515c9dfc9783e6293b8eea977697699cce

        SHA512

        3abb015781406d5d751557826bb87ee84147bc64d1368e5bd2c32acb3ea9d6683c5da98e4d92536f57747a0e029487e722c48e98073fb33e86b354a6bb27a61b

      • C:\Windows\svchost.com

        Filesize

        40KB

        MD5

        36fd5e09c417c767a952b4609d73a54b

        SHA1

        299399c5a2403080a5bf67fb46faec210025b36d

        SHA256

        980bac6c9afe8efc9c6fe459a5f77213b0d8524eb00de82437288eb96138b9a2

        SHA512

        1813a6a5b47a9b2cd3958cf4556714ae240f2aa19d0a241b596830f0f2b89a33ec864d00ce6a791d323a58dfbff42a0fded65eefbf980c92685e25c0ec415d92

      • \PROGRA~2\Adobe\READER~1.0\Reader\LOGTRA~1.EXE

        Filesize

        252KB

        MD5

        9e2b9928c89a9d0da1d3e8f4bd96afa7

        SHA1

        ec66cda99f44b62470c6930e5afda061579cde35

        SHA256

        8899b4ed3446b7d55b54defbc1acb7c5392a4b3bc8ec2cdc7c31171708965043

        SHA512

        2ca5ad1d0e12a8049de885b90b7f56fe77c868e0d6dae4ec4b6f3bc0bf7b2e73295cc9b1328c2b45357ffb0d7804622ab3f91a56140b098e93b691032d508156

      • \Users\Admin\AppData\Local\Temp\3582-490\febb47ebfc843b8152c26ab3382ea059_JaffaCakes118.exe

        Filesize

        1.1MB

        MD5

        4bbf2d108f7e10872a657f7395a09eeb

        SHA1

        d895820ac1631c9de8b6561aa9cf39099fb2407a

        SHA256

        e391c863171dbe0a79e9ee01b3f221603e1dddb3938c3215980cd5b991578f4e

        SHA512

        42f9b1b755a599a0a9dd870b00791bc7c8e85519909929910e272eae432865942b746ab0bde29af078aba9d20c2211f69fd25f78bfaed034a6ff22249de82082

      • memory/1032-46-0x00000000003D0000-0x00000000003E6000-memory.dmp

        Filesize

        88KB

      • memory/1032-14-0x0000000073F30000-0x000000007461E000-memory.dmp

        Filesize

        6.9MB

      • memory/1032-88-0x0000000073F3E000-0x0000000073F3F000-memory.dmp

        Filesize

        4KB

      • memory/1032-126-0x0000000073F30000-0x000000007461E000-memory.dmp

        Filesize

        6.9MB

      • memory/1032-91-0x0000000073F30000-0x000000007461E000-memory.dmp

        Filesize

        6.9MB

      • memory/1032-92-0x00000000080F0000-0x00000000081C6000-memory.dmp

        Filesize

        856KB

      • memory/1032-93-0x0000000005090000-0x0000000005108000-memory.dmp

        Filesize

        480KB

      • memory/1032-13-0x0000000000AD0000-0x0000000000BE8000-memory.dmp

        Filesize

        1.1MB

      • memory/1032-12-0x0000000073F3E000-0x0000000073F3F000-memory.dmp

        Filesize

        4KB

      • memory/1780-123-0x0000000000400000-0x0000000000479000-memory.dmp

        Filesize

        484KB

      • memory/1780-118-0x0000000000400000-0x0000000000479000-memory.dmp

        Filesize

        484KB

      • memory/1780-106-0x0000000000400000-0x0000000000479000-memory.dmp

        Filesize

        484KB

      • memory/1780-108-0x0000000000400000-0x0000000000479000-memory.dmp

        Filesize

        484KB

      • memory/1780-110-0x0000000000400000-0x0000000000479000-memory.dmp

        Filesize

        484KB

      • memory/1780-124-0x0000000000400000-0x0000000000479000-memory.dmp

        Filesize

        484KB

      • memory/1780-125-0x0000000000400000-0x0000000000479000-memory.dmp

        Filesize

        484KB

      • memory/1780-114-0x0000000000400000-0x0000000000479000-memory.dmp

        Filesize

        484KB

      • memory/1780-122-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

        Filesize

        4KB

      • memory/1780-120-0x0000000000400000-0x0000000000479000-memory.dmp

        Filesize

        484KB

      • memory/1780-112-0x0000000000400000-0x0000000000479000-memory.dmp

        Filesize

        484KB

      • memory/1780-116-0x0000000000400000-0x0000000000479000-memory.dmp

        Filesize

        484KB

      • memory/2464-104-0x0000000000400000-0x000000000041B000-memory.dmp

        Filesize

        108KB

      • memory/2872-90-0x0000000000400000-0x000000000041B000-memory.dmp

        Filesize

        108KB