Overview

overview

10

Static

static

3

SolaraBoot...er.exe

windows11-21h2-x64

10

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General

  • Target

    SolaraBootStrapper.exe

  • Size

    105KB

  • Sample

    240615-dyqtqaxfla

  • MD5

    93c33597b07c0d35ac287c6727de0936

  • SHA1

    43e1359fa11e07f724011bf08a38963a2d694a09

  • SHA256

    6cb78dc17654d44fdc3b32b4b8e5c9103bda7d2674129097971e1378b3246c95

  • SHA512

    7397dc0a42887714123114804810c29110acca1070f95fea92d345b71fd6208a06629133616ff857921a2716c0c23b3b8a1a0eea32dee6214cb19ef1e15a397b

  • SSDEEP

    1536:TnAmWtcacmmodjIAjxrxVk9yjvGwjwBTm2ZWFJdksu2PIL0ZimmWxiABDFOXe8P:bAHduUFxV16kFJyCFDkuM

Score
10/10
xwormevasionpersistenceratthemidatrojan

Malware Config

Extracted

Family

xworm

C2

195.88.218.203:2404

Attributes
  • Install_directory

    %Userprofile%

  • install_file

    svchost.exe

Targets

    • Target

      SolaraBootStrapper.exe

    • Size

      105KB

    • MD5

      93c33597b07c0d35ac287c6727de0936

    • SHA1

      43e1359fa11e07f724011bf08a38963a2d694a09

    • SHA256

      6cb78dc17654d44fdc3b32b4b8e5c9103bda7d2674129097971e1378b3246c95

    • SHA512

      7397dc0a42887714123114804810c29110acca1070f95fea92d345b71fd6208a06629133616ff857921a2716c0c23b3b8a1a0eea32dee6214cb19ef1e15a397b

    • SSDEEP

      1536:TnAmWtcacmmodjIAjxrxVk9yjvGwjwBTm2ZWFJdksu2PIL0ZimmWxiABDFOXe8P:bAHduUFxV16kFJyCFDkuM

    Score
    10/10
    xwormevasionpersistenceratthemidatrojan

    • Detect Xworm Payload

    • Xworm

      Xworm is a remote access trojan written in C#.

      trojanratxworm

    • Identifies VirtualBox via ACPI registry values (likely anti-VM)

      evasion

    • Checks BIOS information in registry

      BIOS information is often read in order to detect sandboxing environments.

    • Drops startup file

    • Executes dropped EXE

    • Loads dropped DLL

    • Themida packer

      Detects Themida, an advanced Windows software protection system.

      themida

    • Adds Run key to start application

      persistence

    • Checks whether UAC is enabled

      evasiontrojan

    • Legitimate hosting services abused for malware hosting/C2

    • Looks up external IP address via web service

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

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    behavioral1

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Scheduled Task/Job

1
T1053

Persistence

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Scheduled Task/Job

1
T1053

Privilege Escalation

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Scheduled Task/Job

1
T1053

Defense Evasion

Virtualization/Sandbox Evasion

1
T1497

Modify Registry

1
T1112

Credential Access

Discovery

Query Registry

4
T1012

Virtualization/Sandbox Evasion

1
T1497

System Information Discovery

4
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Web Service

1
T1102

Impact

Resource Development

Reconnaissance

Tasks