Resubmissions

24-03-2023 10:46

230324-mvcmcsdg49 10

24-03-2023 10:45

230324-mte14adg46 10

Analysis

  • max time kernel
    1780s
  • max time network
    1798s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230220-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
  • submitted
    24-03-2023 10:46

General

  • Target

    Bot.exe

  • Size

    63KB

  • MD5

    762f2fc17465058d27010124bb425202

  • SHA1

    1b6b701c9c09128886e4676c4f1e534c7db39ad9

  • SHA256

    ae045f8e36db8f38af35258127ff43a71d522ae6ad15b7aad527bf75dd7a7666

  • SHA512

    329eacc85396f176fb30989f8d85fbeea097388ab37edecf22c3f4f368c1b0b0106cc7ec5c5ad06abbe488868ce4a5731ab04e4e7852a3d37bb1bdc42bb4e932

  • SSDEEP

    768:8FfQVS7rGOe01ZDKMFiw7qyignMEOoCenkHubK23vuEBXKZ7ifudOPJhsAjDOep:Yfo/mKM1qrgnqebKivpaV0udOR3us

Malware Config

Extracted

Family

xworm

C2

ways-examining.at.ply.gg:18120

Attributes
  • install_file

    USB.exe

Signatures

  • Xworm

    Xworm is a remote access trojan written in C#.

  • Drops startup file 2 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Bot.exe
    "C:\Users\Admin\AppData\Local\Temp\Bot.exe"
    1⤵
    • Drops startup file
    • Adds Run key to start application
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of SetWindowsHookEx
    PID:3308

Network

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Registry Run Keys / Startup Folder

1
T1060

Defense Evasion

Modify Registry

1
T1112

Discovery

System Information Discovery

1
T1082

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/3308-133-0x0000000000890000-0x00000000008A6000-memory.dmp
    Filesize

    88KB

  • memory/3308-134-0x000000001B670000-0x000000001B680000-memory.dmp
    Filesize

    64KB

  • memory/3308-141-0x000000001B670000-0x000000001B680000-memory.dmp
    Filesize

    64KB