Analysis

  • max time kernel
    120s
  • max time network
    123s
  • platform
    windows7_x64
  • resource
    win7-20230712-en
  • resource tags

    arch:x64arch:x86image:win7-20230712-enlocale:en-usos:windows7-x64system
  • submitted
    08/08/2023, 07:43

General

  • Target

    kobee951587.exe

  • Size

    476KB

  • MD5

    f9523a569eaa47e6ce6dc10c9b07117b

  • SHA1

    01859c3360b613e1d8663b8edb702bea32ef65cc

  • SHA256

    2e97f4d6bf16c0c918f48301129830bf11639ac0090c6eb937b126345fcc2185

  • SHA512

    453345710c0cb4f047e05f4b4af112866b9355f885b3d257c83cd75ed4943050d90a7c85b3d186bf81860a2e43d0ebde5b8cbcb7f315d19aee11b81484a9311b

  • SSDEEP

    6144:AmOPUVI5v8AiOEUi4+9Ret/+qw0iTOMeH/ThI3E8pEu77jKsU4kyvzvDlMh/BlUn:n+8dOluU/+qw0XBb4vvzTks5Mh7wo+

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 2 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

Processes

  • C:\Users\Admin\AppData\Local\Temp\kobee951587.exe
    "C:\Users\Admin\AppData\Local\Temp\kobee951587.exe"
    1⤵
    • Checks QEMU agent file
    • Loads dropped DLL
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    PID:1952

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\Users\Admin\AppData\Local\Temp\nsj74C4.tmp\System.dll

          Filesize

          11KB

          MD5

          9625d5b1754bc4ff29281d415d27a0fd

          SHA1

          80e85afc5cccd4c0a3775edbb90595a1a59f5ce0

          SHA256

          c2f405d7402f815d0c3fadd9a50f0bbbb1bab9aa38fe347823478a2587299448

          SHA512

          dce52b640897c2e8dbfd0a1472d5377fa91fb9cf1aeff62604d014bccbe5b56af1378f173132abeb0edd18c225b9f8f5e3d3e72434aed946661e036c779f165b

        • \Users\Admin\AppData\Local\Temp\nsj74C4.tmp\System.dll

          Filesize

          11KB

          MD5

          9625d5b1754bc4ff29281d415d27a0fd

          SHA1

          80e85afc5cccd4c0a3775edbb90595a1a59f5ce0

          SHA256

          c2f405d7402f815d0c3fadd9a50f0bbbb1bab9aa38fe347823478a2587299448

          SHA512

          dce52b640897c2e8dbfd0a1472d5377fa91fb9cf1aeff62604d014bccbe5b56af1378f173132abeb0edd18c225b9f8f5e3d3e72434aed946661e036c779f165b

        • \Users\Admin\AppData\Local\Temp\nsj74C4.tmp\System.dll

          Filesize

          11KB

          MD5

          9625d5b1754bc4ff29281d415d27a0fd

          SHA1

          80e85afc5cccd4c0a3775edbb90595a1a59f5ce0

          SHA256

          c2f405d7402f815d0c3fadd9a50f0bbbb1bab9aa38fe347823478a2587299448

          SHA512

          dce52b640897c2e8dbfd0a1472d5377fa91fb9cf1aeff62604d014bccbe5b56af1378f173132abeb0edd18c225b9f8f5e3d3e72434aed946661e036c779f165b

        • memory/1952-68-0x0000000002FF0000-0x0000000005616000-memory.dmp

          Filesize

          38.1MB

        • memory/1952-69-0x0000000077140000-0x00000000772E9000-memory.dmp

          Filesize

          1.7MB

        • memory/1952-71-0x0000000002FF0000-0x0000000005616000-memory.dmp

          Filesize

          38.1MB

        • memory/1952-70-0x0000000077330000-0x0000000077406000-memory.dmp

          Filesize

          856KB