General

  • Target

    f3b4f47ab6b09e0b090c6fb6f6145774485e2d043d373ed2971034bf6cd9f420

  • Size

    2.7MB

  • Sample

    211223-wryj4abde4

  • MD5

    e55422d97015ca9945114cebaeba4cbf

  • SHA1

    671d3c900b4aa7b4568e8a4c61a49075fc74484b

  • SHA256

    f3b4f47ab6b09e0b090c6fb6f6145774485e2d043d373ed2971034bf6cd9f420

  • SHA512

    9453ae884da5d039fa0ca4fc33216b1ca02d2b40831edf534d7fde16a01c045f1c49ae7935ab317cd6f515e21a9a22ee14cbf3a068627b03e334cdc115603f6f

Malware Config

Extracted

Family

cryptbot

C2

dainfe42.top

morvtu04.top

Targets

    • Target

      f3b4f47ab6b09e0b090c6fb6f6145774485e2d043d373ed2971034bf6cd9f420

    • Size

      2.7MB

    • MD5

      e55422d97015ca9945114cebaeba4cbf

    • SHA1

      671d3c900b4aa7b4568e8a4c61a49075fc74484b

    • SHA256

      f3b4f47ab6b09e0b090c6fb6f6145774485e2d043d373ed2971034bf6cd9f420

    • SHA512

      9453ae884da5d039fa0ca4fc33216b1ca02d2b40831edf534d7fde16a01c045f1c49ae7935ab317cd6f515e21a9a22ee14cbf3a068627b03e334cdc115603f6f

    • CryptBot

      A C++ stealer distributed widely in bundle with other software.

    • 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.

    • 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

4
T1012

Virtualization/Sandbox Evasion

1
T1497

System Information Discovery

4
T1082

Collection

Data from Local System

2
T1005

Tasks