General

  • Target

    1ddbd0850493c851ab3503b8af24118e2f4c0441a9974.exe

  • Size

    3.7MB

  • Sample

    221127-y15e4sba5t

  • MD5

    a6e6568bb1d13740032826a17df8b06e

  • SHA1

    d230889182244e2b6a3a10d072db5456a920d77a

  • SHA256

    1ddbd0850493c851ab3503b8af24118e2f4c0441a997436d13fb5596f96178eb

  • SHA512

    5de5a9acc7a56df2e5f68ba3689d5cc9f572bf50ba479adae560c90184690f98bbb99a6d33540e1de68a527a4821fd7ae73638ce6d311bfcfb6068b880fcb4bb

  • SSDEEP

    98304:GvZqvrIhQmm9iU8Jg4muafk63xfGweOoUc6L:jTIOz9iUCgFfk63xfG3Ohc6

Malware Config

Extracted

Family

cryptbot

C2

http://kudqyx62.top/gate.php

Attributes
  • payload_url

    http://tamoes08.top/oleous.dat

Targets

    • Target

      1ddbd0850493c851ab3503b8af24118e2f4c0441a9974.exe

    • Size

      3.7MB

    • MD5

      a6e6568bb1d13740032826a17df8b06e

    • SHA1

      d230889182244e2b6a3a10d072db5456a920d77a

    • SHA256

      1ddbd0850493c851ab3503b8af24118e2f4c0441a997436d13fb5596f96178eb

    • SHA512

      5de5a9acc7a56df2e5f68ba3689d5cc9f572bf50ba479adae560c90184690f98bbb99a6d33540e1de68a527a4821fd7ae73638ce6d311bfcfb6068b880fcb4bb

    • SSDEEP

      98304:GvZqvrIhQmm9iU8Jg4muafk63xfGweOoUc6L:jTIOz9iUCgFfk63xfG3Ohc6

    • CryptBot

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

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

    • Executes dropped EXE

    • Checks BIOS information in registry

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

    • Deletes itself

    • 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

5
T1012

Virtualization/Sandbox Evasion

1
T1497

System Information Discovery

5
T1082

Peripheral Device Discovery

1
T1120

Collection

Data from Local System

2
T1005

Tasks