General

  • Target

    UniSignCRSV3Setup.exe

  • Size

    10.8MB

  • Sample

    230313-vexatsbc68

  • MD5

    8ec94b17d6ad1d13ed96fbbf85ddb041

  • SHA1

    450c8285e521462a5ebcf91d7370620e98037dc0

  • SHA256

    ea0dfb50bb5de6c1b57c18948a89eeae675faf6423bd19dabbdc6f37f61e11b5

  • SHA512

    72007272cf75f209aca095a012ac91b1a92ed650fa374fe71910268a9a1c42b9bfdf2c44296cd4359b961802c58306a8785a04a0c56163401b72c5fc1e7910ef

  • SSDEEP

    196608:Y3k9aG+3Cb7/xO+efrKfgY294CsQV8vkaC/dyI3OuXerH4KYZ2Z2dn7HB5:YU9aGECv/xOrdbuklWuXgNSdN5

Malware Config

Targets

    • Target

      UniSignCRSV3Setup.exe

    • Size

      10.8MB

    • MD5

      8ec94b17d6ad1d13ed96fbbf85ddb041

    • SHA1

      450c8285e521462a5ebcf91d7370620e98037dc0

    • SHA256

      ea0dfb50bb5de6c1b57c18948a89eeae675faf6423bd19dabbdc6f37f61e11b5

    • SHA512

      72007272cf75f209aca095a012ac91b1a92ed650fa374fe71910268a9a1c42b9bfdf2c44296cd4359b961802c58306a8785a04a0c56163401b72c5fc1e7910ef

    • SSDEEP

      196608:Y3k9aG+3Cb7/xO+efrKfgY294CsQV8vkaC/dyI3OuXerH4KYZ2Z2dn7HB5:YU9aGECv/xOrdbuklWuXgNSdN5

    • 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.

    • Executes dropped EXE

    • Identifies Wine through registry keys

      Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.

    • Loads dropped DLL

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

    • Adds Run key to start application

    • Checks installed software on the system

      Looks up Uninstall key entries in the registry to enumerate software on the system.

    • Suspicious use of NtSetInformationThreadHideFromDebugger

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Registry Run Keys / Startup Folder

1
T1060

Defense Evasion

Virtualization/Sandbox Evasion

2
T1497

Modify Registry

2
T1112

Install Root Certificate

1
T1130

Credential Access

Credentials in Files

1
T1081

Discovery

Query Registry

4
T1012

Virtualization/Sandbox Evasion

2
T1497

System Information Discovery

2
T1082

Collection

Data from Local System

1
T1005

Tasks