General

  • Target

    Update.exe

  • Size

    5.6MB

  • Sample

    241108-ynw8zaxpfs

  • MD5

    f668e23b162b29408d106d7e33026df4

  • SHA1

    f3a67a810ab1b737c3f63ee9556feee17516a6dc

  • SHA256

    982007b8100703183c8b4715a57be7129a3b6c695ff971afedfaf3cdef509e7c

  • SHA512

    bcda79e81dfcdd017b06137c7f6b8286492b161f6b7bf028c60e28481160120f695e1351d2ba0b967e3468e13e39388b539623d17ee734b2d5ba46db1da550bf

  • SSDEEP

    98304:jitl27OuKr+gvhf2U9Nzm31PMoslkqXf0FvUcwti78OqJ7TPBvc8X6Uc:jzOuK6mn9NzgMoYkSIvUcwti7TQlvciE

Malware Config

Extracted

Family

gurcu

C2

https://api.telegram.org/bot8120686609:AAFFbHJYN8XNfebk9woXGBYglnP_6w4ugW0/sendDocument?chat_id=-4597951127&caption=%F0%9F%93%82%20-%20Browser%20data%0A%E2%94%9C%E2%94%80%E2%94%80%20%F0%9F%93%82%20-%20cookies(0.25%20kb

https://api.telegram.org/bot8120686609:AAFFbHJYN8XNfebk9woXGBYglnP_6w4ugW0/sendMessage?chat_id=-4597951127

https://api.telegram.org/bot8120686609:AAFFbHJYN8XNfebk9woXGBYglnP_6w4ugW0/getUpdates?offset=-

https://api.telegram.org/bot8120686609:AAFFbHJYN8XNfebk9woXGBYglnP_6w4ugW0/sendDocument?chat_id=-4597951127&caption=%F0%9F%93%B8Screenshot%20take

Targets

    • Target

      Update.exe

    • Size

      5.6MB

    • MD5

      f668e23b162b29408d106d7e33026df4

    • SHA1

      f3a67a810ab1b737c3f63ee9556feee17516a6dc

    • SHA256

      982007b8100703183c8b4715a57be7129a3b6c695ff971afedfaf3cdef509e7c

    • SHA512

      bcda79e81dfcdd017b06137c7f6b8286492b161f6b7bf028c60e28481160120f695e1351d2ba0b967e3468e13e39388b539623d17ee734b2d5ba46db1da550bf

    • SSDEEP

      98304:jitl27OuKr+gvhf2U9Nzm31PMoslkqXf0FvUcwti78OqJ7TPBvc8X6Uc:jzOuK6mn9NzgMoYkSIvUcwti7TQlvciE

    • Gurcu family

    • Gurcu, WhiteSnake

      Gurcu is a malware stealer written in C#.

    • MilleniumRat

      MilleniumRat is a remote access trojan written in C#.

    • Milleniumrat family

    • Checks computer location settings

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

    • 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.

    • Adds Run key to start application

    • 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.

    • Enumerates processes with tasklist

MITRE ATT&CK Enterprise v15

Tasks