Analysis

  • max time kernel
    150s
  • max time network
    152s
  • platform
    windows7_x64
  • resource
    win7-20220901-en
  • resource tags

    arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
  • submitted
    05-10-2022 11:01

General

  • Target

    Order Inquiry.exe

  • Size

    1.1MB

  • MD5

    bd87ed67a08d2e9e4cec6526666b563e

  • SHA1

    6ec0878c6a65ec969617287f19fde458bf0c5461

  • SHA256

    7bc37a2f4e71dd95aa4e40048f4aca478e8e63b9393a8c2811e8470bb6f4aba1

  • SHA512

    236f79f09a7b150c68fc899d08d620fa64ccaeb4ef21c85401296047d3b179a818d33abd22ac38d8018b7f4bc13f2a5419bbf9b1de5570ace87cc1babc815f22

  • SSDEEP

    24576:OGmYbj/2yjk37WwHsOzj4j85M1hUQDAxzJX44qxpWo:OGmY2OghsOzj4jGM1aK4FXo

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

harjahwool.ddnsfree.com:8372

Attributes
  • audio_folder

    MicRecords

  • audio_path

    ApplicationPath

  • 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

  • keylog_crypt

    true

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • mouse_option

    false

  • mutex

    Rmc-EGNT8M

  • screenshot_crypt

    true

  • screenshot_flag

    true

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • startup_value

    Remcos

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Signatures

  • Modifies WinLogon for persistence 2 TTPs 1 IoCs
  • Remcos

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

  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 3 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Runs ping.exe 1 TTPs 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 15 IoCs
  • Suspicious use of AdjustPrivilegeToken 8 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Order Inquiry.exe
    "C:\Users\Admin\AppData\Local\Temp\Order Inquiry.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1696
    • C:\Windows\SysWOW64\cmd.exe
      "cmd" /c ping 127.0.0.1 -n 7 > nul && REG ADD "HKCU\Software\Microsoft\Windows NT\CurrentVersion\Winlogon" /f /v "Shell" /t REG_SZ /d "explorer.exe,C:\Users\Admin\AppData\Roaming\dygjhkm.exe,"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:456
      • C:\Windows\SysWOW64\PING.EXE
        ping 127.0.0.1 -n 7
        3⤵
        • Runs ping.exe
        PID:1672
      • C:\Windows\SysWOW64\reg.exe
        REG ADD "HKCU\Software\Microsoft\Windows NT\CurrentVersion\Winlogon" /f /v "Shell" /t REG_SZ /d "explorer.exe,C:\Users\Admin\AppData\Roaming\dygjhkm.exe,"
        3⤵
        • Modifies WinLogon for persistence
        PID:1516
    • C:\Windows\SysWOW64\cmd.exe
      "cmd" /c ping 127.0.0.1 -n 15 > nul && copy "C:\Users\Admin\AppData\Local\Temp\Order Inquiry.exe" "C:\Users\Admin\AppData\Roaming\dygjhkm.exe" && ping 127.0.0.1 -n 15 > nul && "C:\Users\Admin\AppData\Roaming\dygjhkm.exe"
      2⤵
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:1896
      • C:\Windows\SysWOW64\PING.EXE
        ping 127.0.0.1 -n 15
        3⤵
        • Runs ping.exe
        PID:1452
      • C:\Windows\SysWOW64\PING.EXE
        ping 127.0.0.1 -n 15
        3⤵
        • Runs ping.exe
        PID:388
      • C:\Users\Admin\AppData\Roaming\dygjhkm.exe
        "C:\Users\Admin\AppData\Roaming\dygjhkm.exe"
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Suspicious use of SetThreadContext
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:1536
        • C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
          "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe"
          4⤵
            PID:816
          • C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
            "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe"
            4⤵
              PID:1520
            • C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
              "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe"
              4⤵
              • Suspicious use of SetWindowsHookEx
              PID:1116
            • C:\Users\Admin\AppData\Local\Temp\dygjhkmffffhh.exe
              "C:\Users\Admin\AppData\Local\Temp\dygjhkmffffhh.exe"
              4⤵
              • Executes dropped EXE
              • Loads dropped DLL
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of AdjustPrivilegeToken
              PID:304
              • C:\Users\Admin\AppData\Local\Temp\dygjhkmffffhh.exe
                "C:\Users\Admin\AppData\Local\Temp\dygjhkmffffhh.exe"
                5⤵
                • Executes dropped EXE
                • Suspicious behavior: EnumeratesProcesses
                • Suspicious use of AdjustPrivilegeToken
                PID:1056
      • C:\Windows\system32\AUDIODG.EXE
        C:\Windows\system32\AUDIODG.EXE 0x530
        1⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:1992

      Network

      MITRE ATT&CK Matrix ATT&CK v6

      Persistence

      Winlogon Helper DLL

      1
      T1004

      Defense Evasion

      Modify Registry

      1
      T1112

      Discovery

      System Information Discovery

      1
      T1082

      Remote System Discovery

      1
      T1018

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\Users\Admin\AppData\Local\Temp\dygjhkmffffhh.exe
        Filesize

        76KB

        MD5

        0e362e7005823d0bec3719b902ed6d62

        SHA1

        590d860b909804349e0cdc2f1662b37bd62f7463

        SHA256

        2d0dc6216f613ac7551a7e70a798c22aee8eb9819428b1357e2b8c73bef905ad

        SHA512

        518991b68496b3f8545e418cf9b345e0791e09cc20d177b8aa47e0aba447aa55383c64f5bdaca39f2b061a5d08c16f2ad484af8a9f238ca23ab081618fba3ad3

      • C:\Users\Admin\AppData\Local\Temp\dygjhkmffffhh.exe
        Filesize

        76KB

        MD5

        0e362e7005823d0bec3719b902ed6d62

        SHA1

        590d860b909804349e0cdc2f1662b37bd62f7463

        SHA256

        2d0dc6216f613ac7551a7e70a798c22aee8eb9819428b1357e2b8c73bef905ad

        SHA512

        518991b68496b3f8545e418cf9b345e0791e09cc20d177b8aa47e0aba447aa55383c64f5bdaca39f2b061a5d08c16f2ad484af8a9f238ca23ab081618fba3ad3

      • C:\Users\Admin\AppData\Local\Temp\dygjhkmffffhh.exe
        Filesize

        76KB

        MD5

        0e362e7005823d0bec3719b902ed6d62

        SHA1

        590d860b909804349e0cdc2f1662b37bd62f7463

        SHA256

        2d0dc6216f613ac7551a7e70a798c22aee8eb9819428b1357e2b8c73bef905ad

        SHA512

        518991b68496b3f8545e418cf9b345e0791e09cc20d177b8aa47e0aba447aa55383c64f5bdaca39f2b061a5d08c16f2ad484af8a9f238ca23ab081618fba3ad3

      • C:\Users\Admin\AppData\Local\Temp\dygjhkmffffhh.txt
        MD5

        d41d8cd98f00b204e9800998ecf8427e

        SHA1

        da39a3ee5e6b4b0d3255bfef95601890afd80709

        SHA256

        e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

        SHA512

        cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

      • C:\Users\Admin\AppData\Local\Temp\dygjhkmffffhh.txt
        Filesize

        56B

        MD5

        db337b7c9f8991ba71c3a50a4b129e64

        SHA1

        e877bae78734e47946e5075493eeee2e897147c6

        SHA256

        eb6f1f9fd8c4a64603425ea5cbb3d16e8dbb5ef33dcbf2e904703b09150d48f4

        SHA512

        e0cbca92b4637aa3ac25ceea0759f9ab6aa6de9d1b0543a2b116d3bf2a8bf8eb55e922051245c487aca09e227cb868d9256ccb871563319ec187bb385c02fa9f

      • C:\Users\Admin\AppData\Local\Temp\dygjhkmffffhh.txt
        Filesize

        56B

        MD5

        db337b7c9f8991ba71c3a50a4b129e64

        SHA1

        e877bae78734e47946e5075493eeee2e897147c6

        SHA256

        eb6f1f9fd8c4a64603425ea5cbb3d16e8dbb5ef33dcbf2e904703b09150d48f4

        SHA512

        e0cbca92b4637aa3ac25ceea0759f9ab6aa6de9d1b0543a2b116d3bf2a8bf8eb55e922051245c487aca09e227cb868d9256ccb871563319ec187bb385c02fa9f

      • C:\Users\Admin\AppData\Roaming\dygjhkm.exe
        Filesize

        1.1MB

        MD5

        bd87ed67a08d2e9e4cec6526666b563e

        SHA1

        6ec0878c6a65ec969617287f19fde458bf0c5461

        SHA256

        7bc37a2f4e71dd95aa4e40048f4aca478e8e63b9393a8c2811e8470bb6f4aba1

        SHA512

        236f79f09a7b150c68fc899d08d620fa64ccaeb4ef21c85401296047d3b179a818d33abd22ac38d8018b7f4bc13f2a5419bbf9b1de5570ace87cc1babc815f22

      • C:\Users\Admin\AppData\Roaming\dygjhkm.exe
        Filesize

        1.1MB

        MD5

        bd87ed67a08d2e9e4cec6526666b563e

        SHA1

        6ec0878c6a65ec969617287f19fde458bf0c5461

        SHA256

        7bc37a2f4e71dd95aa4e40048f4aca478e8e63b9393a8c2811e8470bb6f4aba1

        SHA512

        236f79f09a7b150c68fc899d08d620fa64ccaeb4ef21c85401296047d3b179a818d33abd22ac38d8018b7f4bc13f2a5419bbf9b1de5570ace87cc1babc815f22

      • \Users\Admin\AppData\Local\Temp\dygjhkmffffhh.exe
        Filesize

        76KB

        MD5

        0e362e7005823d0bec3719b902ed6d62

        SHA1

        590d860b909804349e0cdc2f1662b37bd62f7463

        SHA256

        2d0dc6216f613ac7551a7e70a798c22aee8eb9819428b1357e2b8c73bef905ad

        SHA512

        518991b68496b3f8545e418cf9b345e0791e09cc20d177b8aa47e0aba447aa55383c64f5bdaca39f2b061a5d08c16f2ad484af8a9f238ca23ab081618fba3ad3

      • \Users\Admin\AppData\Local\Temp\dygjhkmffffhh.exe
        Filesize

        76KB

        MD5

        0e362e7005823d0bec3719b902ed6d62

        SHA1

        590d860b909804349e0cdc2f1662b37bd62f7463

        SHA256

        2d0dc6216f613ac7551a7e70a798c22aee8eb9819428b1357e2b8c73bef905ad

        SHA512

        518991b68496b3f8545e418cf9b345e0791e09cc20d177b8aa47e0aba447aa55383c64f5bdaca39f2b061a5d08c16f2ad484af8a9f238ca23ab081618fba3ad3

      • \Users\Admin\AppData\Roaming\dygjhkm.exe
        Filesize

        1.1MB

        MD5

        bd87ed67a08d2e9e4cec6526666b563e

        SHA1

        6ec0878c6a65ec969617287f19fde458bf0c5461

        SHA256

        7bc37a2f4e71dd95aa4e40048f4aca478e8e63b9393a8c2811e8470bb6f4aba1

        SHA512

        236f79f09a7b150c68fc899d08d620fa64ccaeb4ef21c85401296047d3b179a818d33abd22ac38d8018b7f4bc13f2a5419bbf9b1de5570ace87cc1babc815f22

      • memory/304-116-0x0000000000000000-mapping.dmp
      • memory/304-119-0x0000000000AB0000-0x0000000000ACA000-memory.dmp
        Filesize

        104KB

      • memory/388-63-0x0000000000000000-mapping.dmp
      • memory/456-58-0x0000000000000000-mapping.dmp
      • memory/816-83-0x0000000000080000-0x00000000000FF000-memory.dmp
        Filesize

        508KB

      • memory/816-81-0x0000000000080000-0x00000000000FF000-memory.dmp
        Filesize

        508KB

      • memory/816-73-0x0000000000080000-0x00000000000FF000-memory.dmp
        Filesize

        508KB

      • memory/816-74-0x0000000000080000-0x00000000000FF000-memory.dmp
        Filesize

        508KB

      • memory/816-76-0x0000000000080000-0x00000000000FF000-memory.dmp
        Filesize

        508KB

      • memory/816-78-0x0000000000080000-0x00000000000FF000-memory.dmp
        Filesize

        508KB

      • memory/816-79-0x0000000000080000-0x00000000000FF000-memory.dmp
        Filesize

        508KB

      • memory/816-80-0x0000000000080000-0x00000000000FF000-memory.dmp
        Filesize

        508KB

      • memory/1056-123-0x0000000000000000-mapping.dmp
      • memory/1116-113-0x0000000000400000-0x000000000047F000-memory.dmp
        Filesize

        508KB

      • memory/1116-109-0x0000000000400000-0x000000000047F000-memory.dmp
        Filesize

        508KB

      • memory/1116-110-0x00000000004327A4-mapping.dmp
      • memory/1116-114-0x0000000000400000-0x000000000047F000-memory.dmp
        Filesize

        508KB

      • memory/1116-127-0x0000000000400000-0x000000000047F000-memory.dmp
        Filesize

        508KB

      • memory/1452-61-0x0000000000000000-mapping.dmp
      • memory/1516-62-0x0000000000000000-mapping.dmp
      • memory/1536-65-0x0000000000000000-mapping.dmp
      • memory/1536-71-0x0000000000880000-0x000000000089A000-memory.dmp
        Filesize

        104KB

      • memory/1536-70-0x00000000005D0000-0x0000000000602000-memory.dmp
        Filesize

        200KB

      • memory/1536-68-0x00000000009D0000-0x0000000000AFA000-memory.dmp
        Filesize

        1.2MB

      • memory/1536-72-0x00000000009A0000-0x00000000009A6000-memory.dmp
        Filesize

        24KB

      • memory/1672-59-0x0000000000000000-mapping.dmp
      • memory/1696-57-0x00000000007C0000-0x00000000007D8000-memory.dmp
        Filesize

        96KB

      • memory/1696-54-0x0000000000230000-0x000000000035A000-memory.dmp
        Filesize

        1.2MB

      • memory/1696-56-0x0000000000790000-0x00000000007C2000-memory.dmp
        Filesize

        200KB

      • memory/1696-55-0x00000000766D1000-0x00000000766D3000-memory.dmp
        Filesize

        8KB

      • memory/1896-60-0x0000000000000000-mapping.dmp