Resubmissions

28-03-2023 12:04

230328-n82zvaah58 7

20-03-2023 20:06

230320-yvd1zafb93 9

General

  • Target

    ca6b1b3b00d1bdccb7cc73255bc97329.exe

  • Size

    6.8MB

  • Sample

    230320-yvd1zafb93

  • MD5

    ca6b1b3b00d1bdccb7cc73255bc97329

  • SHA1

    88923d5bf5f29cab5fe3ac66459bc94d709b06a1

  • SHA256

    23e3550cb43e9362251d56005e3c961c426d8e065ff2f2123f457e217415f6c1

  • SHA512

    fd92162cb9fc5f0a22e25b17cf9386034121af061b821531823292778978f7f44c2e51a7eadc07e902560ec8cffd389a40dd32649ffe3782fbf956dc293224b3

  • SSDEEP

    196608:V09b1yxhIsD1xLyVUZIBZjUQHQ8dq9XvjUQ:V09bsBvy2GjeV

Malware Config

Targets

    • Target

      ca6b1b3b00d1bdccb7cc73255bc97329.exe

    • Size

      6.8MB

    • MD5

      ca6b1b3b00d1bdccb7cc73255bc97329

    • SHA1

      88923d5bf5f29cab5fe3ac66459bc94d709b06a1

    • SHA256

      23e3550cb43e9362251d56005e3c961c426d8e065ff2f2123f457e217415f6c1

    • SHA512

      fd92162cb9fc5f0a22e25b17cf9386034121af061b821531823292778978f7f44c2e51a7eadc07e902560ec8cffd389a40dd32649ffe3782fbf956dc293224b3

    • SSDEEP

      196608:V09b1yxhIsD1xLyVUZIBZjUQHQ8dq9XvjUQ:V09bsBvy2GjeV

    • 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.

    • Deletes itself

    • Executes dropped EXE

    • 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

    • Maps connected drives based on registry

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

    • 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

6
T1012

Virtualization/Sandbox Evasion

1
T1497

System Information Discovery

6
T1082

Peripheral Device Discovery

1
T1120

Collection

Data from Local System

2
T1005

Tasks