General

  • Target

    F201B12E3CB2A1817AB645155746E935.exe

  • Size

    3.8MB

  • Sample

    210610-lglx46yndn

  • MD5

    f201b12e3cb2a1817ab645155746e935

  • SHA1

    74e3fdbaab01c95295a466f520767b0bc7a681ab

  • SHA256

    738108e1651deb6c04e05a4a2680819283433189eff93426a56e834381b5e4b5

  • SHA512

    5ee4a205b59601eceade6e5e7187b86c8835ade4662f24217f9c145dc4ed2fddc86ea780a95afadbf859fc77ce9e2b3dabc9f783f38e5afc780292e2def164f1

Malware Config

Extracted

Family

smokeloader

Version

2020

C2

http://ppcspb.com/upload/

http://mebbing.com/upload/

http://twcamel.com/upload/

http://howdycash.com/upload/

http://lahuertasonora.com/upload/

http://kpotiques.com/upload/

rc4.i32
rc4.i32

Targets

    • Target

      F201B12E3CB2A1817AB645155746E935.exe

    • Size

      3.8MB

    • MD5

      f201b12e3cb2a1817ab645155746e935

    • SHA1

      74e3fdbaab01c95295a466f520767b0bc7a681ab

    • SHA256

      738108e1651deb6c04e05a4a2680819283433189eff93426a56e834381b5e4b5

    • SHA512

      5ee4a205b59601eceade6e5e7187b86c8835ade4662f24217f9c145dc4ed2fddc86ea780a95afadbf859fc77ce9e2b3dabc9f783f38e5afc780292e2def164f1

    • ElysiumStealer

      ElysiumStealer (previously known as ZeromaxStealer) is an info stealer that can steal login credentials for various accounts.

    • PlugX

      PlugX is a RAT (Remote Access Trojan) that has been around since 2008.

    • Raccoon

      Simple but powerful infostealer which was very active in 2019.

    • RedLine

      RedLine Stealer is a malware family written in C#, first appearing in early 2020.

    • SmokeLoader

      Modular backdoor trojan in use since 2014.

    • Socelars

      Socelars is an infostealer targeting browser cookies and credit card credentials.

    • Socelars Payload

    • Suspicious use of NtCreateUserProcessOtherParentProcess

    • Vidar

      Vidar is an infostealer based on Arkei stealer.

    • Checks for common network interception software

      Looks in the registry for tools like Wireshark or Fiddler commonly used to analyze network activity.

    • Blocklisted process makes network request

    • Downloads MZ/PE file

    • Drops file in Drivers directory

    • Executes dropped EXE

    • UPX packed file

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

    • VMProtect packed file

      Detects executables packed with VMProtect commercial packer.

    • Checks computer location settings

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

    • Loads dropped DLL

    • Reads user/profile data of local email clients

      Email clients store some user data on disk where infostealers will often target it.

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

    • Accesses 2FA software files, possible credential harvesting

    • Accesses cryptocurrency files/wallets, possible credential harvesting

    • 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.

    • Checks whether UAC is enabled

    • 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

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

    • Writes to the Master Boot Record (MBR)

      Bootkits write to the MBR to gain persistence at a level below the operating system.

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

    • autoit_exe

      AutoIT scripts compiled to PE executables.

MITRE ATT&CK Enterprise v6

Tasks