General

  • Target

    795b951e16aa4aa0557c24eedad4897e457864838393fcf66220da85ad8be9d8_JC.exe

  • Size

    472KB

  • Sample

    231012-tfh9xsac4t

  • MD5

    41a7d60bf27fb0f847aee929bad2e251

  • SHA1

    3765af7a0198a9fbd715bae2db6cbbd3d0d55992

  • SHA256

    795b951e16aa4aa0557c24eedad4897e457864838393fcf66220da85ad8be9d8

  • SHA512

    7daa54ad5c26c1233de5225e411204926a23e9ec07b54465bba6425425ed7a20341c0dee1982a2efcafdf3e1f1059583232eb8f42c34ddbd42bccce1206abed6

  • SSDEEP

    12288:mtRavrD294wyaVoK1979nUKfE0ART+Dzi:qRNVyaVow59xD2

Malware Config

Extracted

Family

smokeloader

Version

2022

C2

http://servermlogs27.xyz/statweb255/

http://servmblog45.xyz/statweb255/

http://demblog575.xyz/statweb255/

http://admlogs85x.xyz/statweb255/

http://blogmstat389.xyz/statweb255/

http://blogmstat255.xyz/statweb255/

rc4.i32
rc4.i32

Targets

    • Target

      795b951e16aa4aa0557c24eedad4897e457864838393fcf66220da85ad8be9d8_JC.exe

    • Size

      472KB

    • MD5

      41a7d60bf27fb0f847aee929bad2e251

    • SHA1

      3765af7a0198a9fbd715bae2db6cbbd3d0d55992

    • SHA256

      795b951e16aa4aa0557c24eedad4897e457864838393fcf66220da85ad8be9d8

    • SHA512

      7daa54ad5c26c1233de5225e411204926a23e9ec07b54465bba6425425ed7a20341c0dee1982a2efcafdf3e1f1059583232eb8f42c34ddbd42bccce1206abed6

    • SSDEEP

      12288:mtRavrD294wyaVoK1979nUKfE0ART+Dzi:qRNVyaVow59xD2

    • Ammyy Admin

      Remote admin tool with various capabilities.

    • AmmyyAdmin payload

    • Detect rhadamanthys stealer shellcode

    • Phobos

      Phobos ransomware appeared at the beginning of 2019.

    • Rhadamanthys

      Rhadamanthys is an info stealer written in C++ first seen in August 2022.

    • SmokeLoader

      Modular backdoor trojan in use since 2014.

    • Suspicious use of NtCreateUserProcessOtherParentProcess

    • Deletes shadow copies

      Ransomware often targets backup files to inhibit system recovery.

    • Modifies boot configuration data using bcdedit

    • Renames multiple (91) files with added filename extension

      This suggests ransomware activity of encrypting all the files on the system.

    • Deletes backup catalog

      Uses wbadmin.exe to inhibit system recovery.

    • Downloads MZ/PE file

    • Modifies Windows Firewall

    • Deletes itself

    • 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.

    • Accesses Microsoft Outlook profiles

    • Adds Run key to start application

    • Drops desktop.ini file(s)

    • Writes to the Master Boot Record (MBR)

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

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks