Overview

overview

10

Static

static

JANUARY OV...df.exe

windows7_x64

10

JANUARY OV...df.exe

windows10-2004_x64

1

Analysis

  • max time kernel
    149s
  • max time network
    139s
  • platform
    windows7_x64
  • resource
    win7-en-20211208
  • submitted
    05-02-2022 19:59

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General

  • Target

    JANUARY OVERDUE INVOICE.pdf.exe

  • Size

    1.5MB

  • MD5

    f7d79ec6a3bf524f8f0c0e8d54949948

  • SHA1

    ff9535613f977f6321a1eca20c50e97d23c83259

  • SHA256

    b4fbe906439597a3d05b94f3a7001069687e598cabc9a82e47d6c43046be10a5

  • SHA512

    27dd0344afe613f24147e08aa1208e0fbea2c6618a69a97e48b94a9f412b44273dfd268653dcaec7a83e7fdb10601b6c58ee90bc412601879308f69f7d5d2783

Score
10/10
webmonitorbackdoorinfostealerrat

Malware Config

Extracted

Family

webmonitor

C2

niiarmah.wm01.to:443

Attributes
  • config_key

    4EcDHH7aWbl50LayUnuRlJWUXiKQWk0O

  • private_key

    yvkn5wM8E

  • url_path

    /recv5.php

Signatures

  • RevcodeRat, WebMonitorRat

    WebMonitor is a remote access tool that you can use from any browser access to control, and monitor your phones, or PCs.

    backdoorratinfostealerwebmonitor
  • WebMonitor Payload 5 IoCs
  • CustAttr .NET packer 1 IoCs

    Detects CustAttr .NET packer in memory.

  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Creates scheduled task(s) 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

    persistence
  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\JANUARY OVERDUE INVOICE.pdf.exe
    "C:\Users\Admin\AppData\Local\Temp\JANUARY OVERDUE INVOICE.pdf.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1100
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\LbDmDauhDnWnVS" /XML "C:\Users\Admin\AppData\Local\Temp\tmp730D.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:304
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:1840

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1
T1053

Persistence

Scheduled Task

1
T1053

Privilege Escalation

Scheduled Task

1
T1053

Defense Evasion

Credential Access

Discovery

System Information Discovery

1
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmp730D.tmp
    MD5

    e9770f75c77fd3b67cd2d075663087b3

    SHA1

    49baecc09000e1ee24b31284d3ef52af484eed83

    SHA256

    5494fe9c0da46481e2157fb40fc945e6111cccb26fa12993dc5d7c57f4ce3baf

    SHA512

    054494cb1b5118e4e35a980e93f44fbcbb5a060900a37ab2752be9934b5564d3accaaaf4495ab2e20501eaff733e4012976e120d9c9bf9daf85d2b577d1397cb

    Download Submit
  • memory/1100-53-0x0000000001010000-0x0000000001196000-memory.dmp
    Filesize

    1.5MB

    Download
  • memory/1100-54-0x0000000075891000-0x0000000075893000-memory.dmp
    Filesize

    8KB

    Download
  • memory/1100-55-0x0000000000F30000-0x0000000000F31000-memory.dmp
    Filesize

    4KB

    Download
  • memory/1100-56-0x000000007EF40000-0x000000007EFA0000-memory.dmp
    Filesize

    384KB

    Download
  • memory/1100-57-0x0000000000BD0000-0x0000000000BDA000-memory.dmp
    Filesize

    40KB

    Download
  • memory/1100-58-0x00000000052E0000-0x00000000053D4000-memory.dmp
    Filesize

    976KB

    Download
  • memory/1100-59-0x0000000007860000-0x000000000795E000-memory.dmp
    Filesize

    1016KB

    Download
  • memory/1840-61-0x0000000000400000-0x00000000004F3000-memory.dmp
    Filesize

    972KB

    Download
  • memory/1840-62-0x0000000000400000-0x00000000004F3000-memory.dmp
    Filesize

    972KB

    Download
  • memory/1840-63-0x0000000000400000-0x00000000004F3000-memory.dmp
    Filesize

    972KB

    Download
  • memory/1840-64-0x0000000000400000-0x00000000004F3000-memory.dmp
    Filesize

    972KB

    Download
  • memory/1840-65-0x0000000000400000-0x00000000004F3000-memory.dmp
    Filesize

    972KB

    Download
  • memory/1840-68-0x0000000000400000-0x00000000004F3000-memory.dmp
    Filesize

    972KB

    Download
  • memory/1840-69-0x0000000000401000-0x00000000004F3000-memory.dmp
    Filesize

    968KB

    Download
  • memory/1840-70-0x0000000002FB0000-0x0000000003FB0000-memory.dmp
    Filesize

    16.0MB

    Download