General

  • Target

    Opera.exe

  • Size

    319KB

  • Sample

    240426-qhm44scd74

  • MD5

    f69924b642ac4b9ef1dfacdfd43759a9

  • SHA1

    95da50564c7cbc3749148419c68a08b0f2869ee1

  • SHA256

    d9b248ce98a243a37d33096fc7b1cad784ee77f5920b0bd6618a6690ca426f18

  • SHA512

    2334511265c507d16b3a323c721a392659feb405a5d9fea588146c4ef320261166312c2fcf8f494c4aa342e0b5a9d5da20576ce2d6ae1e3215ee47dcc19f5e07

  • SSDEEP

    6144:48loZMCrIkd8g+EtXHkv/iD4DDUgoOJBiLHaIJtM34b8e1mmiW2brXv5P:7oZRL+EP8DDUgoOJBiLHaIJtMQIL/5P

Malware Config

Extracted

Family

umbral

C2

https://discord.com/api/webhooks/1233119648527159317/Az86qBZQwyED_alc1sGO6UWR18PzIJCJX0PM3XdL1VTOwZPXr0B4Rc6-GqAkKUjg4Jn2

Extracted

Family

xworm

C2

phentermine-partial.gl.at.ply.gg:36969

Attributes
  • Install_directory

    %AppData%

  • install_file

    Client.exe

  • telegram

    https://api.telegram.org/bot7080511499:AAGFFOA3S2vvwmEy85SIMhKHrMsAdBoLR2Y

Targets

    • Target

      Opera.exe

    • Size

      319KB

    • MD5

      f69924b642ac4b9ef1dfacdfd43759a9

    • SHA1

      95da50564c7cbc3749148419c68a08b0f2869ee1

    • SHA256

      d9b248ce98a243a37d33096fc7b1cad784ee77f5920b0bd6618a6690ca426f18

    • SHA512

      2334511265c507d16b3a323c721a392659feb405a5d9fea588146c4ef320261166312c2fcf8f494c4aa342e0b5a9d5da20576ce2d6ae1e3215ee47dcc19f5e07

    • SSDEEP

      6144:48loZMCrIkd8g+EtXHkv/iD4DDUgoOJBiLHaIJtM34b8e1mmiW2brXv5P:7oZRL+EP8DDUgoOJBiLHaIJtMQIL/5P

    • Detect Umbral payload

    • Detect Xworm Payload

    • Umbral

      Umbral stealer is an opensource moduler stealer written in C#.

    • Xworm

      Xworm is a remote access trojan written in C#.

    • Downloads MZ/PE file

    • Drops file in Drivers directory

    • Checks computer location settings

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

    • Drops startup file

    • Executes dropped EXE

    • Reads user/profile data of web browsers

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

    • 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.

MITRE ATT&CK Enterprise v15

Tasks