General

  • Target

    c77aeea8df56c68cf64ac5486a0d5774a1bd8dc6f94e3fa8ae447ff78ec12ace

  • Size

    1.3MB

  • Sample

    231102-fjnf6ahg78

  • MD5

    c003ceed32075bc7f2badbb474ea85a6

  • SHA1

    44b4f6bb6730456a7d88b67ed0c7d90d0140b5a8

  • SHA256

    c77aeea8df56c68cf64ac5486a0d5774a1bd8dc6f94e3fa8ae447ff78ec12ace

  • SHA512

    d926aed44947fb1be14d3815d572d4990b47eacae33c50e675d5947ec26a406682505a4b1864761ee53ddce521cc082c503ee425e6c5492d2659c1b19dbbfcb5

  • SSDEEP

    24576:1mHjtcfR2p9iZRGJVLdRrSyE0uzlRZLfre43ccbv6oKmf8WDbuGfM:8HjtJae3jnE1zU43cGv6oKmfFDB

Malware Config

Extracted

Family

smokeloader

Botnet

pub1

Extracted

Family

smokeloader

Version

2020

C2

http://host-file-host6.com/

http://host-host-file8.com/

rc4.i32
rc4.i32

Targets

    • Target

      c77aeea8df56c68cf64ac5486a0d5774a1bd8dc6f94e3fa8ae447ff78ec12ace

    • Size

      1.3MB

    • MD5

      c003ceed32075bc7f2badbb474ea85a6

    • SHA1

      44b4f6bb6730456a7d88b67ed0c7d90d0140b5a8

    • SHA256

      c77aeea8df56c68cf64ac5486a0d5774a1bd8dc6f94e3fa8ae447ff78ec12ace

    • SHA512

      d926aed44947fb1be14d3815d572d4990b47eacae33c50e675d5947ec26a406682505a4b1864761ee53ddce521cc082c503ee425e6c5492d2659c1b19dbbfcb5

    • SSDEEP

      24576:1mHjtcfR2p9iZRGJVLdRrSyE0uzlRZLfre43ccbv6oKmf8WDbuGfM:8HjtJae3jnE1zU43cGv6oKmfFDB

    • DcRat

      DarkCrystal(DC) is a new .NET RAT active since June 2019 capable of loading additional plugins.

    • Glupteba

      Glupteba is a modular loader written in Golang with various components.

    • Glupteba payload

    • SmokeLoader

      Modular backdoor trojan in use since 2014.

    • Suspicious use of NtCreateUserProcessOtherParentProcess

    • Windows security bypass

    • Modifies boot configuration data using bcdedit

    • Blocklisted process makes network request

    • Downloads MZ/PE file

    • Drops file in Drivers directory

    • Modifies Windows Firewall

    • Possible attempt to disable PatchGuard

      Rootkits can use kernel patching to embed themselves in an operating system.

    • Stops running service(s)

    • 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.

    • Drops startup file

    • 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.

    • UPX packed file

      Detects executables packed with UPX/modified UPX open source packer.

    • Unexpected DNS network traffic destination

      Network traffic to other servers than the configured DNS servers was detected on the DNS port.

    • Windows security modification

    • Adds Run key to start application

    • Checks installed software on the system

      Looks up Uninstall key entries in the registry to enumerate software on the system.

    • Drops Chrome extension

    • Drops desktop.ini file(s)

    • Enumerates connected drives

      Attempts to read the root path of hard drives other than the default C: drive.

    • Legitimate hosting services abused for malware hosting/C2

    • Manipulates WinMonFS driver.

      Roottkits write to WinMonFS to hide directories/files from being detected.

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks