General

  • Target

    b724f357f38ebbc4db95aa17c981097cceb72a05b6f20c83d40ad3d9d9068680

  • Size

    298KB

  • Sample

    211209-wd1saseean

  • MD5

    5abf77ca17cd967de8dc06a7c3e6ada3

  • SHA1

    354620233a6e3818e3d4f727955dfbf1d3f91e3e

  • SHA256

    b724f357f38ebbc4db95aa17c981097cceb72a05b6f20c83d40ad3d9d9068680

  • SHA512

    2b17bc802ff794a6044fc6347c36ce110afc89b8c92ab60cddb2b5593d885868a826ff4b3c413b006539383f673eeb133187ee87ff37f5b5087909f75c748395

Malware Config

Extracted

Language
ps1
Deobfuscated
URLs
ps1.dropper

https://raw.githubusercontent.com/sqlitey/sqlite/master/speed.ps1

Extracted

Family

smokeloader

Version

2020

C2

http://rcacademy.at/upload/

http://e-lanpengeonline.com/upload/

http://vjcmvz.cn/upload/

http://galala.ru/upload/

http://witra.ru/upload/

rc4.i32
rc4.i32

Targets

    • Target

      b724f357f38ebbc4db95aa17c981097cceb72a05b6f20c83d40ad3d9d9068680

    • Size

      298KB

    • MD5

      5abf77ca17cd967de8dc06a7c3e6ada3

    • SHA1

      354620233a6e3818e3d4f727955dfbf1d3f91e3e

    • SHA256

      b724f357f38ebbc4db95aa17c981097cceb72a05b6f20c83d40ad3d9d9068680

    • SHA512

      2b17bc802ff794a6044fc6347c36ce110afc89b8c92ab60cddb2b5593d885868a826ff4b3c413b006539383f673eeb133187ee87ff37f5b5087909f75c748395

    • SmokeLoader

      Modular backdoor trojan in use since 2014.

    • suricata: ET MALWARE ServHelper CnC Inital Checkin

      suricata: ET MALWARE ServHelper CnC Inital Checkin

    • suricata: ET MALWARE Terse alphanumeric executable downloader high likelihood of being hostile

      suricata: ET MALWARE Terse alphanumeric executable downloader high likelihood of being hostile

    • Grants admin privileges

      Uses net.exe to modify the user's privileges.

    • Blocklisted process makes network request

    • Downloads MZ/PE file

    • Executes dropped EXE

    • Modifies RDP port number used by Windows

    • Sets DLL path for service in the registry

    • UPX packed file

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

    • Deletes itself

    • Loads dropped DLL

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Account Manipulation

1
T1098

Registry Run Keys / Startup Folder

1
T1060

Defense Evasion

Modify Registry

2
T1112

Discovery

Query Registry

1
T1012

Peripheral Device Discovery

1
T1120

System Information Discovery

1
T1082

Lateral Movement

Remote Desktop Protocol

1
T1076

Tasks