Analysis

  • max time kernel
    143s
  • max time network
    143s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230703-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230703-enlocale:en-usos:windows10-2004-x64system
  • submitted
    04/08/2023, 17:02

General

  • Target

    617edc0de1e77f1822ef3e93986f705758ba7ee38b59725d01cf6cabd5d98ef1exe_JC.exe

  • Size

    323KB

  • MD5

    398168319933805c70238c679be79bdb

  • SHA1

    8e42c9f4283d9544b63b77fe886abcffea2efe14

  • SHA256

    617edc0de1e77f1822ef3e93986f705758ba7ee38b59725d01cf6cabd5d98ef1

  • SHA512

    a839a9b0302fe8bce57d64b9236d63ebd349590de07d8e6a828f135623d316fc8d45492e9f76fee555a2025d802b668027a9385fd02ea9c5e8f55ddd22e8b599

  • SSDEEP

    6144:jBe4i9+vu/x+TjVA0uIfeDcGyguqfWrUU4aeZk7v1jEoTEvFGCNE:7i9nuxuI2DhuGsf8W7Nj/EvFlu

Score
10/10

Malware Config

Signatures

  • Guloader,Cloudeye

    A shellcode based downloader first seen in 2020.

  • Checks QEMU agent file 2 TTPs 1 IoCs

    Checks presence of QEMU agent, possibly to detect virtualization.

  • Loads dropped DLL 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Program crash 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\617edc0de1e77f1822ef3e93986f705758ba7ee38b59725d01cf6cabd5d98ef1exe_JC.exe
    "C:\Users\Admin\AppData\Local\Temp\617edc0de1e77f1822ef3e93986f705758ba7ee38b59725d01cf6cabd5d98ef1exe_JC.exe"
    1⤵
    • Checks QEMU agent file
    • Loads dropped DLL
    PID:3444
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 3444 -s 1052
      2⤵
      • Program crash
      PID:2484
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 464 -p 3444 -ip 3444
    1⤵
      PID:4652

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Users\Admin\AppData\Local\Temp\nsm15B7.tmp\System.dll

            Filesize

            11KB

            MD5

            3f176d1ee13b0d7d6bd92e1c7a0b9bae

            SHA1

            fe582246792774c2c9dd15639ffa0aca90d6fd0b

            SHA256

            fa4ab1d6f79fd677433a31ada7806373a789d34328da46ccb0449bbf347bd73e

            SHA512

            0a69124819b7568d0dea4e9e85ce8fe61c7ba697c934e3a95e2dcfb9f252b1d9da7faf8774b6e8efd614885507acc94987733eba09a2f5e7098b774dfc8524b6

          • memory/3444-140-0x00000000049E0000-0x0000000005457000-memory.dmp

            Filesize

            10.5MB

          • memory/3444-141-0x00000000049E0000-0x0000000005457000-memory.dmp

            Filesize

            10.5MB

          • memory/3444-142-0x00000000049E0000-0x0000000005457000-memory.dmp

            Filesize

            10.5MB