Overview

overview

10

Static

static

GfsFepFIKsNGpt.dll

windows10-2004-x64

10

Resubmissions

13-10-2022 01:21

221013-bqxk7aadg4 10

01-09-2022 11:01

220901-m4kdkacfcm 10

Analysis

  • max time kernel
    77s
  • max time network
    81s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    13-10-2022 01:21

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General

  • Target

    GfsFepFIKsNGpt.dll

  • Size

    1.7MB

  • MD5

    14da4c2df839237771865372ce4eee25

  • SHA1

    5b0c15e551f989d1702478a50da3fac5bd3dff87

  • SHA256

    32d3c8a61ba7a61d1f7466a4a60f7b52bb9bb0e6d000418da5cce79831f55a8c

  • SHA512

    dd480f58734d0b5d1b53af599ca665422b1268263bceccd12b9103d95a4554b7b4b781af18eafefc3ba5713ad4cd18ba1513046bad10e7126894bca2761ece17

  • SSDEEP

    49152:7mWxtD5wWHxLrApxq7pMKEngsfyJllGVeTQKP7:7vxtD66xLrsxIpMKEngsfyJllGVeTQKD

Score
10/10
bumblebee3108evasionpersistencetrojan

Malware Config

Extracted

Family

bumblebee

Botnet

3108

C2

64.44.102.36:443

51.83.249.204:443

146.70.106.163:443
rc4.plain

Signatures

  • BumbleBee

    BumbleBee is a webshell malware written in C++.

    trojanbumblebee
  • Enumerates VirtualBox registry keys 2 TTPs 5 IoCs
    evasion
  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 3 IoCs
    evasion
  • Looks for VirtualBox Guest Additions in registry 2 TTPs 1 IoCs
    evasion
  • Modifies Installed Components in the registry 2 TTPs 1 IoCs
    persistence
  • Checks BIOS information in registry 2 TTPs 3 IoCs

    BIOS information is often read in order to detect sandboxing environments.

  • Identifies Wine through registry keys 2 TTPs 1 IoCs

    Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.

    evasion
  • Enumerates connected drives 3 TTPs 1 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs
  • Checks SCSI registry key(s) 3 TTPs 58 IoCs

    SCSI information is often read in order to detect sandboxing environments.

  • Enumerates system info in registry 2 TTPs 2 IoCs
  • Modifies registry class 37 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 58 IoCs
  • Suspicious use of FindShellTrayWindow 60 IoCs
  • Suspicious use of SendNotifyMessage 64 IoCs
  • Suspicious use of SetWindowsHookEx 4 IoCs

Processes

  • C:\Windows\system32\regsvr32.exe
    regsvr32 /s C:\Users\Admin\AppData\Local\Temp\GfsFepFIKsNGpt.dll
    1⤵
    • Enumerates VirtualBox registry keys
    • Identifies VirtualBox via ACPI registry values (likely anti-VM)
    • Looks for VirtualBox Guest Additions in registry
    • Checks BIOS information in registry
    • Identifies Wine through registry keys
    • Suspicious use of NtCreateThreadExHideFromDebugger
    • Suspicious behavior: EnumeratesProcesses
    PID:212
  • C:\Windows\explorer.exe
    explorer.exe
    1⤵
    • Modifies Installed Components in the registry
    • Enumerates connected drives
    • Checks SCSI registry key(s)
    • Modifies registry class
    • Suspicious behavior: GetForegroundWindowSpam
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of SetWindowsHookEx
    PID:2420
  • C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe
    "C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe" -ServerName:CortanaUI.AppX8z9r6jm96hw4bsbneegw0kyxx296wr9t.mca
    1⤵
    • Enumerates system info in registry
    • Modifies registry class
    • Suspicious use of SetWindowsHookEx
    PID:768
  • C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe
    "C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe" -ServerName:App.AppXywbrabmsek0gm3tkwpr5kwzbs55tkqay.mca
    1⤵
    • Modifies registry class
    • Suspicious use of SetWindowsHookEx
    PID:4696

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/212-133-0x0000000002780000-0x0000000002896000-memory.dmp

    Filesize

    1.1MB

    Download

  • memory/212-134-0x0000000002780000-0x0000000002896000-memory.dmp

    Filesize

    1.1MB

    Download

  • memory/212-135-0x0000000002780000-0x0000000002896000-memory.dmp

    Filesize

    1.1MB

    Download

  • memory/212-136-0x00007FF8D20C0000-0x00007FF8D20D0000-memory.dmp

    Filesize

    64KB

    Download

  • memory/768-144-0x00000180F7800000-0x00000180F7808000-memory.dmp

    Filesize

    32KB

    Download

  • memory/768-147-0x00000180F8210000-0x00000180F8230000-memory.dmp

    Filesize

    128KB

    Download

  • memory/768-151-0x00000180F8290000-0x00000180F8390000-memory.dmp

    Filesize

    1024KB

    Download

  • memory/768-154-0x00000180F4B10000-0x00000180F4B30000-memory.dmp

    Filesize

    128KB

    Download

  • memory/768-162-0x00000180F81B0000-0x00000180F81D0000-memory.dmp

    Filesize

    128KB

    Download