General

  • Target

    b368ffcb6e9405d115f30bf7742b5e61.exe

  • Size

    791KB

  • Sample

    230315-pssa5sfc3s

  • MD5

    b368ffcb6e9405d115f30bf7742b5e61

  • SHA1

    349f9aa31450f5dc605d9d087deafe98d451fb9a

  • SHA256

    6f27311fdb767f86e996137271d5765b85f24d535f2c3c9641e87ee64e463791

  • SHA512

    efbc8573b213b9d17c781e0c438779e1881d13f2be273d5fb1a4222ab06acd75caf869c1e3d59a88fe9631abe8d80266957e812c2e43bfe94a8092ec92caf5c6

  • SSDEEP

    24576:7yffjBKLiM593mxxx0GE/swVweh2lT8DH:2vMGrED2loT

Malware Config

Extracted

Family

cryptbot

C2

http://ernblt32.top/gate.php

Attributes
  • payload_url

    http:

Targets

    • Target

      b368ffcb6e9405d115f30bf7742b5e61.exe

    • Size

      791KB

    • MD5

      b368ffcb6e9405d115f30bf7742b5e61

    • SHA1

      349f9aa31450f5dc605d9d087deafe98d451fb9a

    • SHA256

      6f27311fdb767f86e996137271d5765b85f24d535f2c3c9641e87ee64e463791

    • SHA512

      efbc8573b213b9d17c781e0c438779e1881d13f2be273d5fb1a4222ab06acd75caf869c1e3d59a88fe9631abe8d80266957e812c2e43bfe94a8092ec92caf5c6

    • SSDEEP

      24576:7yffjBKLiM593mxxx0GE/swVweh2lT8DH:2vMGrED2loT

    • 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.

    • 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

    • Suspicious use of SetThreadContext

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