General

  • Target

    66e4a874645a4e5cffa45813dd5e6bc38dd218247ff784a0618a2d38bdb4a767

  • Size

    2.7MB

  • Sample

    220111-pj4mtafggq

  • MD5

    3b9e0c095cae8dfb3f29e70d8dec9c11

  • SHA1

    4d92451ab924445aa3e8d5776deb5c64bbfffa8f

  • SHA256

    cfc3d2f06848341ed58cc7b3e730f44cae6b6ac3b8cde61334ae9b2441c665fa

  • SHA512

    cfe80e85f40307051ae485b8e452964503435a6a68d8bd644355df310fcb9152d0e5ba02e495724cbfd9fa0a055320bc72a062e2ddcf6514c4875f461e414d88

Malware Config

Extracted

Family

cryptbot

C2

kotbri22.top

moruzj02.top

Attributes
  • payload_url

    http://okavor03.top/download.php?file=acaboa.exe

Targets

    • Target

      66e4a874645a4e5cffa45813dd5e6bc38dd218247ff784a0618a2d38bdb4a767

    • Size

      2.7MB

    • MD5

      459b0f64c3cb635a03af588adcb98077

    • SHA1

      af3573b5a9ae95d061bb2c0f262a7759b6d8c309

    • SHA256

      66e4a874645a4e5cffa45813dd5e6bc38dd218247ff784a0618a2d38bdb4a767

    • SHA512

      17a53247ea4514c66abb01cecdc44919d768905df56eb6a15361b84c7ea07edc329f48b266406997b40e218cc28ad26b3d295eb55067aa92c3d85e4573b8457a

    • 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