General

  • Target

    b0429bd948c05044a9bb367e16bf30586ea495f4788c1e7a63ae4b5464f29cd1

  • Size

    858KB

  • Sample

    220215-wnzmzshdd5

  • MD5

    248ead3f5f4151f8b6c0daca1f774b4a

  • SHA1

    14242a6c2381629ba506c1eb515f30dc4a7e5bc4

  • SHA256

    b0429bd948c05044a9bb367e16bf30586ea495f4788c1e7a63ae4b5464f29cd1

  • SHA512

    c3c90b53d415d2e2cd6c1f7c02c5d665c95c0f92db14164ee2cd7edef1e90dddcc8d78ab6ec3eaaa0311e1d1876d0b7d94ea3f802b88c8f2416ca0c0c9af1977

Malware Config

Targets

    • Target

      b0429bd948c05044a9bb367e16bf30586ea495f4788c1e7a63ae4b5464f29cd1

    • Size

      858KB

    • MD5

      248ead3f5f4151f8b6c0daca1f774b4a

    • SHA1

      14242a6c2381629ba506c1eb515f30dc4a7e5bc4

    • SHA256

      b0429bd948c05044a9bb367e16bf30586ea495f4788c1e7a63ae4b5464f29cd1

    • SHA512

      c3c90b53d415d2e2cd6c1f7c02c5d665c95c0f92db14164ee2cd7edef1e90dddcc8d78ab6ec3eaaa0311e1d1876d0b7d94ea3f802b88c8f2416ca0c0c9af1977

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

    • Downloads MZ/PE file

    • Executes dropped EXE

    • 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

    • Loads dropped DLL

    • Reads user/profile data of web browsers

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

    • Themida packer

      Detects Themida, an advanced Windows software protection system.

    • Accesses cryptocurrency files/wallets, possible credential harvesting

    • Checks installed software on the system

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

    • Checks whether UAC is enabled

    • Suspicious use of NtSetInformationThreadHideFromDebugger

MITRE ATT&CK Matrix ATT&CK v6

Defense Evasion

Virtualization/Sandbox Evasion

1
T1497

Credential Access

Credentials in Files

2
T1081

Discovery

Query Registry

5
T1012

Virtualization/Sandbox Evasion

1
T1497

System Information Discovery

5
T1082

Process Discovery

1
T1057

Collection

Data from Local System

2
T1005

Tasks