Analysis

  • max time kernel
    147s
  • max time network
    145s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    08-04-2021 07:58

General

  • Target

    DOC20210403A266NR5282RBL20266178278_PDF.exe

  • Size

    845KB

  • MD5

    7ccc15217d4c2a598b5b04ec928f32a4

  • SHA1

    c3828f550527c84fa7150ae944167d3ee9ca726b

  • SHA256

    8dc3da77d945f8df3206906bcf76f1096e4db213a9b7b5911d7f0e8eaf3c8b67

  • SHA512

    6911909546c988ea561d19e1bb8dd0afe47690cc81cb62dca97eadf7be5bb11d1c6bc6caa27368f2d0f9461c618f10728a36ca59b43f8bf8f12d03743a1876c1

Score
10/10

Malware Config

Extracted

Family

remcos

C2

olorunwa.duckdns.org:6548

Signatures

  • Remcos

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

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\DOC20210403A266NR5282RBL20266178278_PDF.exe
    "C:\Users\Admin\AppData\Local\Temp\DOC20210403A266NR5282RBL20266178278_PDF.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1904
    • C:\Users\Admin\AppData\Local\Temp\DOC20210403A266NR5282RBL20266178278_PDF.exe
      C:\Users\Admin\AppData\Local\Temp\DOC20210403A266NR5282RBL20266178278_PDF.exe
      2⤵
      • Suspicious use of SetWindowsHookEx
      PID:1148

Network

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Registry Run Keys / Startup Folder

1
T1060

Defense Evasion

Modify Registry

1
T1112

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/1148-65-0x0000000000580000-0x00000000005FB000-memory.dmp
    Filesize

    492KB

  • memory/1148-66-0x000000000058162C-mapping.dmp
  • memory/1148-68-0x0000000000580000-0x00000000005FB000-memory.dmp
    Filesize

    492KB

  • memory/1148-69-0x00000000004E0000-0x0000000000558000-memory.dmp
    Filesize

    480KB

  • memory/1904-59-0x00000000001C0000-0x00000000001C1000-memory.dmp
    Filesize

    4KB

  • memory/1904-61-0x00000000003C0000-0x00000000003DA000-memory.dmp
    Filesize

    104KB

  • memory/1904-64-0x0000000075781000-0x0000000075783000-memory.dmp
    Filesize

    8KB