Analysis

  • max time kernel
    182s
  • max time network
    196s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    24-12-2023 14:35

General

  • Target

    016153c37340d7dd4d45563208a25928.exe

  • Size

    420KB

  • MD5

    016153c37340d7dd4d45563208a25928

  • SHA1

    591f8da7ede0f741c04ec18348999e7a39e96183

  • SHA256

    f41fc6480ca831a072c88d512b3ca96264c7d8652d30224b2f88465139dc8319

  • SHA512

    bdd7af6d07f38eae6e7500ac6d6d5175889e82a4d515025d6899049b1d56f46196d8a418e2b82a94865c7236a44e78f29af551548810f07fba1b6afce30e830f

  • SSDEEP

    6144:49g5p/aJJL7XJAnY7jioSgBK0Ru115xTcYeEknZJJAVAel:4gUJHX+nOjhBq1j2AWK

Malware Config

Signatures

  • Remcos

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

  • Executes dropped EXE 1 IoCs
  • Obfuscated with Agile.Net obfuscator 3 IoCs

    Detects use of the Agile.Net commercial obfuscator, which is capable of entity renaming and control flow obfuscation.

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 28 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 15 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\016153c37340d7dd4d45563208a25928.exe
    "C:\Users\Admin\AppData\Local\Temp\016153c37340d7dd4d45563208a25928.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1264
    • C:\Windows\SysWOW64\cmd.exe
      "cmd.exe" /c REG ADD HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run /f /v progmfil /t REG_SZ /d C:\Windows\system32\pcalua.exe" -a C:\Users\Admin\AppData\Local\ftermgr.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1444
      • C:\Windows\SysWOW64\reg.exe
        REG ADD HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run /f /v progmfil /t REG_SZ /d C:\Windows\system32\pcalua.exe" -a C:\Users\Admin\AppData\Local\ftermgr.exe"
        3⤵
        • Adds Run key to start application
        PID:2372
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Start-Process C:\Users\Admin\AppData\Local\ftermgr.exe
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:3572
      • C:\Users\Admin\AppData\Local\ftermgr.exe
        "C:\Users\Admin\AppData\Local\ftermgr.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:2792
        • C:\Users\Admin\AppData\Local\ftermgr.exe
          "C:\Users\Admin\AppData\Local\ftermgr.exe"
          4⤵
            PID:3428

    Network

    MITRE ATT&CK Matrix ATT&CK v13

    Persistence

    Boot or Logon Autostart Execution

    1
    T1547

    Registry Run Keys / Startup Folder

    1
    T1547.001

    Privilege Escalation

    Boot or Logon Autostart Execution

    1
    T1547

    Registry Run Keys / Startup Folder

    1
    T1547.001

    Defense Evasion

    Modify Registry

    1
    T1112

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_03jcsehr.pro.ps1
      Filesize

      60B

      MD5

      d17fe0a3f47be24a6453e9ef58c94641

      SHA1

      6ab83620379fc69f80c0242105ddffd7d98d5d9d

      SHA256

      96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

      SHA512

      5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

    • C:\Users\Admin\AppData\Local\ftermgr.exe
      Filesize

      420KB

      MD5

      016153c37340d7dd4d45563208a25928

      SHA1

      591f8da7ede0f741c04ec18348999e7a39e96183

      SHA256

      f41fc6480ca831a072c88d512b3ca96264c7d8652d30224b2f88465139dc8319

      SHA512

      bdd7af6d07f38eae6e7500ac6d6d5175889e82a4d515025d6899049b1d56f46196d8a418e2b82a94865c7236a44e78f29af551548810f07fba1b6afce30e830f

    • memory/1264-12-0x00000000060D0000-0x00000000060D8000-memory.dmp
      Filesize

      32KB

    • memory/1264-4-0x0000000006590000-0x0000000006B34000-memory.dmp
      Filesize

      5.6MB

    • memory/1264-13-0x0000000005860000-0x0000000005870000-memory.dmp
      Filesize

      64KB

    • memory/1264-5-0x0000000005FD0000-0x0000000005FD8000-memory.dmp
      Filesize

      32KB

    • memory/1264-6-0x00000000060E0000-0x0000000006172000-memory.dmp
      Filesize

      584KB

    • memory/1264-8-0x0000000005860000-0x0000000005870000-memory.dmp
      Filesize

      64KB

    • memory/1264-7-0x0000000006090000-0x0000000006098000-memory.dmp
      Filesize

      32KB

    • memory/1264-9-0x0000000006510000-0x0000000006554000-memory.dmp
      Filesize

      272KB

    • memory/1264-16-0x0000000074D00000-0x00000000754B0000-memory.dmp
      Filesize

      7.7MB

    • memory/1264-11-0x0000000005860000-0x0000000005870000-memory.dmp
      Filesize

      64KB

    • memory/1264-2-0x00000000056B0000-0x00000000056C6000-memory.dmp
      Filesize

      88KB

    • memory/1264-3-0x0000000005860000-0x0000000005870000-memory.dmp
      Filesize

      64KB

    • memory/1264-10-0x0000000074D00000-0x00000000754B0000-memory.dmp
      Filesize

      7.7MB

    • memory/1264-1-0x0000000074D00000-0x00000000754B0000-memory.dmp
      Filesize

      7.7MB

    • memory/1264-0-0x0000000000D70000-0x0000000000DE0000-memory.dmp
      Filesize

      448KB

    • memory/2792-53-0x0000000005020000-0x0000000005030000-memory.dmp
      Filesize

      64KB

    • memory/2792-52-0x0000000074D00000-0x00000000754B0000-memory.dmp
      Filesize

      7.7MB

    • memory/2792-50-0x0000000005020000-0x0000000005030000-memory.dmp
      Filesize

      64KB

    • memory/2792-54-0x0000000005BF0000-0x0000000005BFA000-memory.dmp
      Filesize

      40KB

    • memory/2792-46-0x0000000005020000-0x0000000005030000-memory.dmp
      Filesize

      64KB

    • memory/2792-55-0x0000000005020000-0x0000000005030000-memory.dmp
      Filesize

      64KB

    • memory/2792-45-0x0000000074D00000-0x00000000754B0000-memory.dmp
      Filesize

      7.7MB

    • memory/3572-22-0x0000000005A50000-0x0000000005AB6000-memory.dmp
      Filesize

      408KB

    • memory/3572-35-0x00000000069C0000-0x0000000006A0C000-memory.dmp
      Filesize

      304KB

    • memory/3572-36-0x0000000074D00000-0x00000000754B0000-memory.dmp
      Filesize

      7.7MB

    • memory/3572-37-0x0000000005570000-0x0000000005580000-memory.dmp
      Filesize

      64KB

    • memory/3572-38-0x0000000005570000-0x0000000005580000-memory.dmp
      Filesize

      64KB

    • memory/3572-40-0x0000000006E70000-0x0000000006E8A000-memory.dmp
      Filesize

      104KB

    • memory/3572-39-0x00000000079A0000-0x0000000007A36000-memory.dmp
      Filesize

      600KB

    • memory/3572-41-0x0000000006EC0000-0x0000000006EE2000-memory.dmp
      Filesize

      136KB

    • memory/3572-34-0x0000000006990000-0x00000000069AE000-memory.dmp
      Filesize

      120KB

    • memory/3572-26-0x00000000063C0000-0x0000000006714000-memory.dmp
      Filesize

      3.3MB

    • memory/3572-25-0x0000000006350000-0x00000000063B6000-memory.dmp
      Filesize

      408KB

    • memory/3572-21-0x00000000059B0000-0x00000000059D2000-memory.dmp
      Filesize

      136KB

    • memory/3572-51-0x0000000074D00000-0x00000000754B0000-memory.dmp
      Filesize

      7.7MB

    • memory/3572-20-0x0000000005BB0000-0x00000000061D8000-memory.dmp
      Filesize

      6.2MB

    • memory/3572-19-0x00000000053D0000-0x0000000005406000-memory.dmp
      Filesize

      216KB

    • memory/3572-18-0x0000000005570000-0x0000000005580000-memory.dmp
      Filesize

      64KB

    • memory/3572-17-0x0000000074D00000-0x00000000754B0000-memory.dmp
      Filesize

      7.7MB