General

  • Target

    tmp

  • Size

    12.3MB

  • Sample

    231123-s9h1ksbd7t

  • MD5

    bc03a49b998eba1a4da82cd3785376e2

  • SHA1

    bc6d1c226c5e46b84a9255510ea6492934cecdc6

  • SHA256

    bccddbc2947cf297abd7f6d7d8414130b127aae72fb141f3090a4948878d2cc1

  • SHA512

    907e4e64b4e97c03d682cff4b9e02571c85f2c51216b779bac7c26bbf1189e3ae59274ca319153f12b7b313c330ed0bf77993bea25d58f890885ee679c6238aa

  • SSDEEP

    393216:Csssss8ssssssssssssssssasssssss5ssssssssVsssssssss2sssssssss0ssM:Csssss8ssssssssssssssssasssssssN

Malware Config

Extracted

Family

smokeloader

Botnet

up3

Extracted

Family

smokeloader

Version

2020

C2

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

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

rc4.i32
rc4.i32

Targets

    • Target

      tmp

    • Size

      12.3MB

    • MD5

      bc03a49b998eba1a4da82cd3785376e2

    • SHA1

      bc6d1c226c5e46b84a9255510ea6492934cecdc6

    • SHA256

      bccddbc2947cf297abd7f6d7d8414130b127aae72fb141f3090a4948878d2cc1

    • SHA512

      907e4e64b4e97c03d682cff4b9e02571c85f2c51216b779bac7c26bbf1189e3ae59274ca319153f12b7b313c330ed0bf77993bea25d58f890885ee679c6238aa

    • SSDEEP

      393216:Csssss8ssssssssssssssssasssssss5ssssssssVsssssssss2sssssssss0ssM:Csssss8ssssssssssssssssasssssssN

    • 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

    • xmrig

      XMRig is a high performance, open source, cross platform CPU/GPU miner.

    • Modifies boot configuration data using bcdedit

    • XMRig Miner payload

    • 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 computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Executes dropped EXE

    • Loads dropped DLL

    • UPX packed file

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

    • 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.

    • Legitimate hosting services abused for malware hosting/C2

    • Manipulates WinMon driver.

      Roottkits write to WinMon to hide PIDs from being detected.

    • 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