General

  • Target

    Solara-V3-main.zip

  • Size

    3.5MB

  • Sample

    240701-qhbq3sxark

  • MD5

    cbb966d428f27742abbaa1dc9e7d5aac

  • SHA1

    20cdd8e83e5c10875d17d8e27f7077829bc77da3

  • SHA256

    63042e292b76378f8a720291e41eaba13d464b9b65eac9974b5d05e35e7f4ffb

  • SHA512

    b2d799cda1eb2ab71010e788100e823d01e78ca2c1fc513b2c39c3984e2cbcaaeed365aea7bdc83e4cb0b6b171f2145ce300ba076cda6a16533bd4f548a99357

  • SSDEEP

    98304:IGYuoyRq/g6A+QzqTTxvYxAXCCd13hp/ior3jdByxji5yd:HoyQ/pA+QGPxPXRrxBexd

Malware Config

Extracted

Family

xworm

Version

3.1

C2

feature-mouse.gl.at.ply.gg:32683

Mutex

OpwzxvxwPVDjc2iN

Attributes
  • Install_directory

    %Temp%

  • install_file

    USB.exe

aes.plain

Targets

    • Target

      Solara-V3-main/SolaraBootstrapper.exe

    • Size

      3.5MB

    • MD5

      8b8cc7e00f4ae98288bf4b244a6ae4b3

    • SHA1

      deed0704178afef55c873a5d124788a771d8548e

    • SHA256

      357ff8ff865f8a198e64f081072a8a815139b8e5014d1488671de1b43ac65d0c

    • SHA512

      d1c0a018646ea8b43c5200809432898d8cb2e65d5dc46fc1753ea63a11fd49303a92308060291e11fefd42eb4cba0edbba4d990db30b436fde81604466eaa9ff

    • SSDEEP

      98304:RUYIGafAzeIA+aFMJrjhOfKBCe1xTdZHYApZx5hQX9wdc:6GaozTA+ayxjdBxjRLS5

    • Detect Xworm Payload

    • Xworm

      Xworm is a remote access trojan written in C#.

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

    • Checks BIOS information in registry

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

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Drops startup file

    • Executes dropped EXE

    • Loads dropped DLL

    • Themida packer

      Detects Themida, an advanced Windows software protection system.

    • Adds Run key to start application

    • Checks whether UAC is enabled

    • Legitimate hosting services abused for malware hosting/C2

    • Suspicious use of NtSetInformationThreadHideFromDebugger

MITRE ATT&CK Matrix ATT&CK v13

Execution

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Persistence

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Defense Evasion

Virtualization/Sandbox Evasion

1
T1497

Modify Registry

1
T1112

Discovery

Query Registry

4
T1012

Virtualization/Sandbox Evasion

1
T1497

System Information Discovery

4
T1082

Command and Control

Web Service

1
T1102

Tasks