General

  • Target

    06a6da8543ba7767c8728a2de532d224.exe

  • Size

    2.6MB

  • Sample

    211229-jr5xysefb9

  • MD5

    06a6da8543ba7767c8728a2de532d224

  • SHA1

    94772a4b0bd3230ee749d160366c41751e71f1a0

  • SHA256

    41df984882b7cb539f1bcc03433f60e2bd7a0313b1e05bda78338d9176d6996b

  • SHA512

    50d8b2e89980357b5aa8393b34bd19be16cd0e92bc1e838c7d8b3ae656af6f9b9b4df18b2eb26528b4dd8d6b2b25a5d1cd0ed85316a47596b90ae913523f4d85

Malware Config

Extracted

Family

cryptbot

C2

hevzbn22.top

morwce02.top

Attributes
  • payload_url

    http://kyvgns02.top/download.php?file=finjan.exe

Targets

    • Target

      06a6da8543ba7767c8728a2de532d224.exe

    • Size

      2.6MB

    • MD5

      06a6da8543ba7767c8728a2de532d224

    • SHA1

      94772a4b0bd3230ee749d160366c41751e71f1a0

    • SHA256

      41df984882b7cb539f1bcc03433f60e2bd7a0313b1e05bda78338d9176d6996b

    • SHA512

      50d8b2e89980357b5aa8393b34bd19be16cd0e92bc1e838c7d8b3ae656af6f9b9b4df18b2eb26528b4dd8d6b2b25a5d1cd0ed85316a47596b90ae913523f4d85

    • CryptBot

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

    • 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.

    • Deletes itself

    • 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