Overview

overview

10

Static

static

Quotation ...DF.exe

windows7_x64

10

Quotation ...DF.exe

windows10_x64

7

Analysis

  • max time kernel
    57s
  • max time network
    56s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    18-01-2021 07:51

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General

  • Target

    Quotation Request-PDF_PDF.exe

  • Size

    1.6MB

  • MD5

    25a3b2a25320e45a9a58eb84789719ee

  • SHA1

    7b1ffe6a3be0d676b89f2986ca1ae6fee11fe271

  • SHA256

    858819973735c0c8715675602e067da2f7ef3ac0fa34bc2c96c39831addb8992

  • SHA512

    e526426fdee134ebffd28a9c9625fc0907b1fcdc6d6047df54d353b0841464dbe09db87b1e44ac2f549b926032e5e3780a1469a4aa9fa2c69b556dd3efcfdb43

Score
10/10
remcospersistencerat

Malware Config

Extracted

Family

remcos

C2

nkosarevaocs.duckdns.org:7266

Signatures

  • Remcos

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

    ratremcos
  • Executes dropped EXE 1 IoCs
  • Drops startup file 1 IoCs
  • Loads dropped DLL 1 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
    persistence
  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of FindShellTrayWindow 6 IoCs
  • Suspicious use of SendNotifyMessage 6 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Quotation Request-PDF_PDF.exe
    "C:\Users\Admin\AppData\Local\Temp\Quotation Request-PDF_PDF.exe"
    1⤵
    • Drops startup file
    • Suspicious use of SetThreadContext
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of WriteProcessMemory
    PID:1044
    • C:\Users\Admin\AppData\Local\Temp\Quotation Request-PDF_PDF.exe
      "C:\Users\Admin\AppData\Local\Temp\Quotation Request-PDF_PDF.exe"
      2⤵
      • Adds Run key to start application
      • Suspicious use of WriteProcessMemory
      PID:1680
      • C:\Windows\SysWOW64\WScript.exe
        "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\install.vbs"
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:1324
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\System32\cmd.exe" /c "C:\Users\Admin\AppData\Roaming\Remcos\remcos.exe"
          4⤵
          • Loads dropped DLL
          • Suspicious use of WriteProcessMemory
          PID:1536
          • C:\Users\Admin\AppData\Roaming\Remcos\remcos.exe
            C:\Users\Admin\AppData\Roaming\Remcos\remcos.exe
            5⤵
            • Executes dropped EXE
            • Suspicious use of FindShellTrayWindow
            • Suspicious use of SendNotifyMessage
            PID:368

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1
T1060

Privilege Escalation

Defense Evasion

Modify Registry

1
T1112

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\install.vbs
    MD5

    b92d64fe5b1d1f59df4b738262aea8df

    SHA1

    c8fb1981759c2d9bb2ec91b705985fba5fc7af63

    SHA256

    fa20e9aab03dc8e9f1910aaf0cf42662379fa16ae3a22642084fb97fa3d4f83a

    SHA512

    2566248b93c0cfb0414f033b8dd18bbd4f88180093eac2861107289bcb4ee160f9593706ff1f7d1f2e4ecea430d67a5a2897551a4f9ebd82b707243e300520e2

    Download Submit
  • C:\Users\Admin\AppData\Roaming\Remcos\remcos.exe
    MD5

    25a3b2a25320e45a9a58eb84789719ee

    SHA1

    7b1ffe6a3be0d676b89f2986ca1ae6fee11fe271

    SHA256

    858819973735c0c8715675602e067da2f7ef3ac0fa34bc2c96c39831addb8992

    SHA512

    e526426fdee134ebffd28a9c9625fc0907b1fcdc6d6047df54d353b0841464dbe09db87b1e44ac2f549b926032e5e3780a1469a4aa9fa2c69b556dd3efcfdb43

    Download Submit
  • C:\Users\Admin\AppData\Roaming\Remcos\remcos.exe
    MD5

    25a3b2a25320e45a9a58eb84789719ee

    SHA1

    7b1ffe6a3be0d676b89f2986ca1ae6fee11fe271

    SHA256

    858819973735c0c8715675602e067da2f7ef3ac0fa34bc2c96c39831addb8992

    SHA512

    e526426fdee134ebffd28a9c9625fc0907b1fcdc6d6047df54d353b0841464dbe09db87b1e44ac2f549b926032e5e3780a1469a4aa9fa2c69b556dd3efcfdb43

    Download Submit
  • \Users\Admin\AppData\Roaming\Remcos\remcos.exe
    MD5

    25a3b2a25320e45a9a58eb84789719ee

    SHA1

    7b1ffe6a3be0d676b89f2986ca1ae6fee11fe271

    SHA256

    858819973735c0c8715675602e067da2f7ef3ac0fa34bc2c96c39831addb8992

    SHA512

    e526426fdee134ebffd28a9c9625fc0907b1fcdc6d6047df54d353b0841464dbe09db87b1e44ac2f549b926032e5e3780a1469a4aa9fa2c69b556dd3efcfdb43

    Download Submit
  • memory/368-15-0x0000000000000000-mapping.dmp
    Download
  • memory/1044-3-0x00000000003B0000-0x00000000003D1000-memory.dmp
    Filesize

    132KB

    Download
  • memory/1044-5-0x00000000001F0000-0x00000000001F3000-memory.dmp
    Filesize

    12KB

    Download
  • memory/1044-2-0x00000000760A1000-0x00000000760A3000-memory.dmp
    Filesize

    8KB

    Download
  • memory/1324-7-0x0000000000000000-mapping.dmp
    Download
  • memory/1324-12-0x0000000002780000-0x0000000002784000-memory.dmp
    Filesize

    16KB

    Download
  • memory/1536-11-0x0000000000000000-mapping.dmp
    Download
  • memory/1680-4-0x0000000000413FA4-mapping.dmp
    Download
  • memory/1680-10-0x0000000000400000-0x0000000000421000-memory.dmp
    Filesize

    132KB

    Download