Overview

overview

10

Static

static

REMITTAN.EXE

windows7_x64

10

REMITTAN.EXE

windows10_x64

10

Analysis

  • max time kernel
    135s
  • max time network
    137s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    20-11-2020 19:45

Sharing

Copy URL
Twitter E-mail
Report Analysis Logs

General

  • Target

    REMITTAN.EXE

  • Size

    73KB

  • MD5

    4f0970aff8d4998eb4330f146538bb9f

  • SHA1

    ce5b8d2203146a4e081d61b525779d13c104797f

  • SHA256

    e3eb1466bda0d2fa25a6aefd756ed0185c86c1bfc0aa2a68a22429afa019cc6a

  • SHA512

    dba29de31cf0b11329c1a9b5111a2dd0d8ab9995945a7f7e920620833e313ac769b757dab9167518998d73c93738d0844d5fa43e1f6014cfa5adbc98c3cc8a00

Score
10/10
remcospersistencerat

Malware Config

Extracted

Family

remcos

C2

dollarboy1.duckdns.org:5252

Signatures

  • Modifies WinLogon for persistence 2 TTPs 1 IoCs
    persistence
  • Remcos

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

    ratremcos
  • Drops startup file 2 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
    persistence
  • Suspicious use of NtSetInformationThreadHideFromDebugger 12 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Program crash 1 IoCs
  • Delays execution with timeout.exe 1 IoCs
    evasion
  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 18 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\REMITTAN.EXE
    "C:\Users\Admin\AppData\Local\Temp\REMITTAN.EXE"
    1⤵
    • Modifies WinLogon for persistence
    • Drops startup file
    • Adds Run key to start application
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1992
    • C:\Windows\SysWOW64\timeout.exe
      timeout 22
      2⤵
      • Delays execution with timeout.exe
      PID:608
    • C:\Users\Admin\AppData\Local\Temp\REMITTAN.EXE
      "C:\Users\Admin\AppData\Local\Temp\REMITTAN.EXE"
      2⤵
      • Suspicious use of SetWindowsHookEx
      PID:1936
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1992 -s 1544
      2⤵
      • Program crash
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1504

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Winlogon Helper DLL

1
T1004

Registry Run Keys / Startup Folder

1
T1060

Privilege Escalation

Defense Evasion

Modify Registry

2
T1112

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/608-3-0x0000000000000000-mapping.dmp
    Download
  • memory/1504-8-0x0000000000000000-mapping.dmp
    Download
  • memory/1504-9-0x0000000001EC0000-0x0000000001ED1000-memory.dmp
    Filesize

    68KB

    Download
  • memory/1504-10-0x00000000026E0000-0x00000000026F1000-memory.dmp
    Filesize

    68KB

    Download
  • memory/1936-5-0x0000000000400000-0x0000000000418000-memory.dmp
    Filesize

    96KB

    Download
  • memory/1936-6-0x000000000040FD88-mapping.dmp
    Download
  • memory/1936-7-0x0000000000400000-0x0000000000418000-memory.dmp
    Filesize

    96KB

    Download
  • memory/1992-0-0x0000000073AF0000-0x00000000741DE000-memory.dmp
    Filesize

    6.9MB

    Download
  • memory/1992-1-0x0000000000130000-0x0000000000131000-memory.dmp
    Filesize

    4KB

    Download
  • memory/1992-4-0x0000000000960000-0x00000000009CE000-memory.dmp
    Filesize

    440KB

    Download