Overview

overview

10

Static

static

3

1618555f0e...18.exe

windows7-x64

10

1618555f0e...18.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    149s
  • max time network
    148s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231222-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
  • submitted
    24/12/2023, 22:34

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General

  • Target

    1618555f0ea0ec58bd442979d6626818.exe

  • Size

    4.4MB

  • MD5

    1618555f0ea0ec58bd442979d6626818

  • SHA1

    ede27429f62ddd530ba1f2d291d080c4607b7913

  • SHA256

    a33db8692edff6c5467b65e4efc9fc7b0c2875871866ebbd078f303d06dab19f

  • SHA512

    9e7b1a9bcf1fc993be2d864153bfd7499c5d2a6fd48599885936a9dc4d6d6199286fcf49088734ca51bd3013c43de0ba69493a844d37135613cb03fde4c9d430

  • SSDEEP

    98304:1Etw78UdTCkpRienHuP/IpEiEA7DJTL+9SbHvqir:1KyTCkpjnY/OEDEBx7vqir

Score
10/10
gluptebametasploitbackdoordiscoverydropperevasionloaderpersistencerootkittrojan

Malware Config

Extracted

Family

metasploit

Version

windows/single_exec

Signatures

  • Glupteba

    Glupteba is a modular loader written in Golang with various components.

    loaderdropperglupteba
  • Glupteba payload 22 IoCs
  • MetaSploit

    Detected malicious payload which is part of the Metasploit Framework, likely generated with msfvenom or similar.

    trojanbackdoormetasploit
  • Modifies Windows Firewall 1 TTPs 1 IoCs
    evasion
  • Executes dropped EXE 2 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
    persistence
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

    discovery
  • Manipulates WinMonFS driver. 1 IoCs

    Roottkits write to WinMonFS to hide directories/files from being detected.

    rootkitevasion
  • Drops file in System32 directory 6 IoCs
  • Checks for VirtualBox DLLs, possible anti-VM trick 1 TTPs 1 IoCs

    Certain files are specific to VirtualBox VMs and can be used to detect execution in a VM.

  • Drops file in Windows directory 2 IoCs
  • Creates scheduled task(s) 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

    persistence
  • GoLang User-Agent 1 IoCs

    Uses default user-agent string defined by GoLang HTTP packages.

  • Modifies data under HKEY_USERS 64 IoCs
  • Modifies system certificate store 2 TTPs 3 IoCs
    evasionspywaretrojan
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

    persistence

Processes

  • C:\Users\Admin\AppData\Local\Temp\1618555f0ea0ec58bd442979d6626818.exe
    "C:\Users\Admin\AppData\Local\Temp\1618555f0ea0ec58bd442979d6626818.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    PID:4204
    • C:\Users\Admin\AppData\Local\Temp\1618555f0ea0ec58bd442979d6626818.exe
      "C:\Users\Admin\AppData\Local\Temp\1618555f0ea0ec58bd442979d6626818.exe"
      2⤵
      • Adds Run key to start application
      • Drops file in System32 directory
      • Checks for VirtualBox DLLs, possible anti-VM trick
      • Drops file in Windows directory
      • Modifies data under HKEY_USERS
      • Modifies system certificate store
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:4292
      • C:\Windows\system32\cmd.exe
        C:\Windows\Sysnative\cmd.exe /C "netsh advfirewall firewall add rule name="csrss" dir=in action=allow program="C:\Windows\rss\csrss.exe" enable=yes"
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:1624
      • C:\Windows\rss\csrss.exe
        C:\Windows\rss\csrss.exe ""
        3⤵
        • Executes dropped EXE
        • Manipulates WinMonFS driver.
        • Modifies data under HKEY_USERS
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:2212
        • C:\Windows\SYSTEM32\schtasks.exe
          schtasks /CREATE /SC ONLOGON /RL HIGHEST /TR "C:\Windows\rss\csrss.exe" /TN csrss /F
          4⤵
          • Creates scheduled task(s)
          PID:3000
        • C:\Users\Admin\AppData\Local\Temp\csrss\injector\injector.exe
          C:\Users\Admin\AppData\Local\Temp\csrss\injector\injector.exe taskmgr.exe C:\Users\Admin\AppData\Local\Temp\csrss\injector\NtQuerySystemInformationHook.dll
          4⤵
          • Executes dropped EXE
          • Suspicious behavior: EnumeratesProcesses
          PID:2728
  • C:\Windows\system32\netsh.exe
    netsh advfirewall firewall add rule name="csrss" dir=in action=allow program="C:\Windows\rss\csrss.exe" enable=yes
    1⤵
    • Modifies Windows Firewall
    PID:968

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\csrss\injector\injector.exe
    Filesize

    281KB

    MD5

    d98e33b66343e7c96158444127a117f6

    SHA1

    bb716c5509a2bf345c6c1152f6e3e1452d39d50d

    SHA256

    5de4e2b07a26102fe527606ce5da1d5a4b938967c9d380a3c5fe86e2e34aaaf1

    SHA512

    705275e4a1ba8205eb799a8cf1737bc8ba686925e52c9198a6060a7abeee65552a85b814ac494a4b975d496a63be285f19a6265550585f2fc85824c42d7efab5

    Download Submit

  • C:\Users\Admin\AppData\Local\Temp\csrss\injector\injector.exe
    Filesize

    117KB

    MD5

    b57281be3c93e46204a9f14931a0b0d4

    SHA1

    a09074165e051f468f0a8dc706e339dcbb96b0dc

    SHA256

    505f410e1f01f2ae32e723537def8b400e1d02486584884fa3068fb6748118f9

    SHA512

    9f2bd66473a9eebc657a695b2a48df04c2f9fdce4773e52d4b91f8b3520ee82d069a2f6a95c7bc7447100289cea482ac39559b9cb7501d175bd639cc5fff4642

    Download Submit

  • C:\Windows\rss\csrss.exe
    Filesize

    139KB

    MD5

    b8370a582aff0589f942d7d7f4e464f0

    SHA1

    52c17566f0b372d18f3241576c30331e9403d449

    SHA256

    675bd827aeadf13e83e84ac2e0d7c133634e38e13819b26746ed9e9390dd3981

    SHA512

    7e73f8de55ab041df929d6b586cca59abfc586704125bc3d203afcd1316908e4d433a17c2048e20cfafe9f73d5b7c2691b91c590c0b53600d441fa6226644537

    Download Submit

  • C:\Windows\rss\csrss.exe
    Filesize

    100KB

    MD5

    a0e640d6852759abc9378a1e170ca879

    SHA1

    97805dc39da772745ded5e6f48db4106656e721d

    SHA256

    4e98719bcbae962ef458d43139575650de828e47346b621a784f740ca2d598d7

    SHA512

    8230b0964d562b0f68f952cf293266fa6d2b9e6ca92899ee44a5e6145919f457ec50a59eb87bf89f4af317f18adc7826650bf2a1cc17430d5649b455fd7d45d0

    Download Submit

  • memory/2212-31-0x0000000000400000-0x0000000000D41000-memory.dmp

    Filesize

    9.3MB

    Download

  • memory/2212-27-0x0000000000400000-0x0000000000D41000-memory.dmp

    Filesize

    9.3MB

    Download

  • memory/2212-39-0x0000000000400000-0x0000000000D41000-memory.dmp

    Filesize

    9.3MB

    Download

  • memory/2212-38-0x0000000000400000-0x0000000000D41000-memory.dmp

    Filesize

    9.3MB

    Download

  • memory/2212-37-0x0000000000400000-0x0000000000D41000-memory.dmp

    Filesize

    9.3MB

    Download

  • memory/2212-36-0x0000000000400000-0x0000000000D41000-memory.dmp

    Filesize

    9.3MB

    Download

  • memory/2212-35-0x0000000000400000-0x0000000000D41000-memory.dmp

    Filesize

    9.3MB

    Download

  • memory/2212-18-0x0000000002E00000-0x0000000003300000-memory.dmp

    Filesize

    5.0MB

    Download

  • memory/2212-19-0x0000000000400000-0x0000000000D41000-memory.dmp

    Filesize

    9.3MB

    Download

  • memory/2212-20-0x0000000000400000-0x0000000000D41000-memory.dmp

    Filesize

    9.3MB

    Download

  • memory/2212-34-0x0000000000400000-0x0000000000D41000-memory.dmp

    Filesize

    9.3MB

    Download

  • memory/2212-33-0x0000000000400000-0x0000000000D41000-memory.dmp

    Filesize

    9.3MB

    Download

  • memory/2212-26-0x0000000002E00000-0x0000000003300000-memory.dmp

    Filesize

    5.0MB

    Download

  • memory/2212-32-0x0000000000400000-0x0000000000D41000-memory.dmp

    Filesize

    9.3MB

    Download

  • memory/2212-28-0x0000000000400000-0x0000000000D41000-memory.dmp

    Filesize

    9.3MB

    Download

  • memory/2212-29-0x0000000000400000-0x0000000000D41000-memory.dmp

    Filesize

    9.3MB

    Download

  • memory/2212-30-0x0000000000400000-0x0000000000D41000-memory.dmp

    Filesize

    9.3MB

    Download

  • memory/4204-1-0x0000000002BA0000-0x0000000002FE5000-memory.dmp

    Filesize

    4.3MB

    Download

  • memory/4204-2-0x0000000002FF0000-0x0000000003916000-memory.dmp

    Filesize

    9.1MB

    Download

  • memory/4204-3-0x0000000000400000-0x0000000000D41000-memory.dmp

    Filesize

    9.3MB

    Download

  • memory/4204-4-0x0000000000400000-0x0000000000D41000-memory.dmp

    Filesize

    9.3MB

    Download

  • memory/4204-6-0x0000000002FF0000-0x0000000003916000-memory.dmp

    Filesize

    9.1MB

    Download

  • memory/4292-7-0x0000000002B10000-0x0000000002F5A000-memory.dmp

    Filesize

    4.3MB

    Download

  • memory/4292-15-0x0000000000400000-0x0000000000D41000-memory.dmp

    Filesize

    9.3MB

    Download

  • memory/4292-9-0x0000000000400000-0x0000000000D41000-memory.dmp

    Filesize

    9.3MB

    Download

  • memory/4292-8-0x0000000002F60000-0x0000000003886000-memory.dmp

    Filesize

    9.1MB

    Download