Overview

overview

10

Static

static

1

75a23c3e92...3a.exe

windows7-x64

10

75a23c3e92...3a.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    149s
  • max time network
    151s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    24/04/2024, 23:16

Sharing

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General

  • Target

    75a23c3e927290e9976d57f5c5c9fff3da3ce909f06d09cdb23fceabfc8b8c3a.exe

  • Size

    4.2MB

  • MD5

    5a35a67c7f6d3546d7bd89bbe9c97c2e

  • SHA1

    e08d11d0ab153ce9fc2be794574259d61f3d0df4

  • SHA256

    75a23c3e927290e9976d57f5c5c9fff3da3ce909f06d09cdb23fceabfc8b8c3a

  • SHA512

    b420d5ca86e1effdbe2b2593970c7c2f5c6e76b7679e4e416c5c21ffc0faedccc3872a8ceac3a44dc0f0a8ad04b7094a9b66966ddd01b1ed9e2a461c22926cc9

  • SSDEEP

    98304:5qdGPkkbrXdSMuO9HY5zkH9t6u095DfLzJg8Yl1VLoS:tbrX/ubObB9

Score
10/10
gluptebadiscoverydropperevasionloaderpersistencetrojan

Malware Config

Signatures

  • Glupteba

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

    loaderdropperglupteba
  • Glupteba payload 18 IoCs
  • Windows security bypass 2 TTPs 7 IoCs
    evasiontrojan
  • Detects Windows executables referencing non-Windows User-Agents 16 IoCs
  • Detects executables Discord URL observed in first stage droppers 16 IoCs
  • Detects executables containing URLs to raw contents of a Github gist 16 IoCs
  • Detects executables containing artifacts associated with disabling Widnows Defender 16 IoCs
  • Detects executables referencing many varying, potentially fake Windows User-Agents 16 IoCs
  • Modifies Windows Firewall 2 TTPs 1 IoCs
    evasion
  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 9 IoCs
  • Windows security modification 2 TTPs 7 IoCs
    evasiontrojan
  • 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
  • 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 3 IoCs
  • Creates scheduled task(s) 1 TTPs 1 IoCs

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

    persistence
  • Modifies data under HKEY_USERS 64 IoCs
  • Modifies system certificate store 2 TTPs 7 IoCs
    evasionspywaretrojan
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 15 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\75a23c3e927290e9976d57f5c5c9fff3da3ce909f06d09cdb23fceabfc8b8c3a.exe
    "C:\Users\Admin\AppData\Local\Temp\75a23c3e927290e9976d57f5c5c9fff3da3ce909f06d09cdb23fceabfc8b8c3a.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    PID:1912
    • C:\Users\Admin\AppData\Local\Temp\75a23c3e927290e9976d57f5c5c9fff3da3ce909f06d09cdb23fceabfc8b8c3a.exe
      "C:\Users\Admin\AppData\Local\Temp\75a23c3e927290e9976d57f5c5c9fff3da3ce909f06d09cdb23fceabfc8b8c3a.exe"
      2⤵
      • Windows security bypass
      • Loads dropped DLL
      • Windows security modification
      • Adds Run key to start application
      • Checks for VirtualBox DLLs, possible anti-VM trick
      • Drops file in Windows directory
      • Modifies data under HKEY_USERS
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:2060
      • 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:2384
        • C:\Windows\system32\netsh.exe
          netsh advfirewall firewall add rule name="csrss" dir=in action=allow program="C:\Windows\rss\csrss.exe" enable=yes
          4⤵
          • Modifies Windows Firewall
          • Modifies data under HKEY_USERS
          PID:2484
      • C:\Windows\rss\csrss.exe
        C:\Windows\rss\csrss.exe
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Modifies system certificate store
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:3024
        • 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:2684
        • C:\Windows\system32\schtasks.exe
          schtasks /delete /tn ScheduledUpdate /f
          4⤵
            PID:2700
          • C:\Users\Admin\AppData\Local\Temp\csrss\patch.exe
            "C:\Users\Admin\AppData\Local\Temp\csrss\patch.exe"
            4⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Modifies system certificate store
            PID:1584
          • 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:1568
    • C:\Windows\system32\makecab.exe
      "C:\Windows\system32\makecab.exe" C:\Windows\Logs\CBS\CbsPersist_20240424231652.log C:\Windows\Logs\CBS\CbsPersist_20240424231652.cab
      1⤵
      • Drops file in Windows directory
      PID:2480

    Network

    MITRE ATT&CK Enterprise v15

    Reconnaissance

    Resource Development

    Initial Access

    Execution

    Scheduled Task/Job

    1
    T1053

    Persistence

    Boot or Logon Autostart Execution

    1
    T1547

    Registry Run Keys / Startup Folder

    1
    T1547.001

    Create or Modify System Process

    1
    T1543

    Windows Service

    1
    T1543.003

    Scheduled Task/Job

    1
    T1053

    Privilege Escalation

    Boot or Logon Autostart Execution

    1
    T1547

    Registry Run Keys / Startup Folder

    1
    T1547.001

    Create or Modify System Process

    1
    T1543

    Windows Service

    1
    T1543.003

    Scheduled Task/Job

    1
    T1053

    Defense Evasion

    Impair Defenses

    3
    T1562

    Disable or Modify System Firewall

    1
    T1562.004

    Disable or Modify Tools

    2
    T1562.001

    Modify Registry

    4
    T1112

    Subvert Trust Controls

    1
    T1553

    Install Root Certificate

    1
    T1553.004

    Credential Access

    Discovery

    Query Registry

    2
    T1012

    System Information Discovery

    1
    T1082

    Lateral Movement

    Collection

    Command and Control

    Exfiltration

    Impact

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\94308059B57B3142E455B38A6EB92015
      Filesize

      68KB

      MD5

      29f65ba8e88c063813cc50a4ea544e93

      SHA1

      05a7040d5c127e68c25d81cc51271ffb8bef3568

      SHA256

      1ed81fa8dfb6999a9fedc6e779138ffd99568992e22d300acd181a6d2c8de184

      SHA512

      e29b2e92c496245bed3372578074407e8ef8882906ce10c35b3c8deebfefe01b5fd7f3030acaa693e175f4b7aca6cd7d8d10ae1c731b09c5fa19035e005de3aa

      Download Submit

    • C:\Users\Admin\AppData\Local\Temp\Cab3056.tmp
      Filesize

      65KB

      MD5

      ac05d27423a85adc1622c714f2cb6184

      SHA1

      b0fe2b1abddb97837ea0195be70ab2ff14d43198

      SHA256

      c6456e12e5e53287a547af4103e0397cb9697e466cf75844312dc296d43d144d

      SHA512

      6d0ef9050e41fbae680e0e59dd0f90b6ac7fea5579ef5708b69d5da33a0ece7e8b16574b58b17b64a34cc34a4ffc22b4a62c1ece61f36c4a11a0665e0536b90d

      Download Submit

    • C:\Users\Admin\AppData\Local\Temp\Tar357B.tmp
      Filesize

      177KB

      MD5

      435a9ac180383f9fa094131b173a2f7b

      SHA1

      76944ea657a9db94f9a4bef38f88c46ed4166983

      SHA256

      67dc37ed50b8e63272b49a254a6039ee225974f1d767bb83eb1fd80e759a7c34

      SHA512

      1a6b277611959720a9c71114957620517ad94541302f164eb872bd322292a952409bafb8bc2ac793b16ad5f25d83f8594ccff2b7834e3c2b2b941e6fc84c009a

      Download Submit

    • 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\patch.exe
      Filesize

      1.7MB

      MD5

      13aaafe14eb60d6a718230e82c671d57

      SHA1

      e039dd924d12f264521b8e689426fb7ca95a0a7b

      SHA256

      f44a7deb678ae7bbaaadf88e4c620d7cdf7e6831a1656c456545b1c06feb4ef3

      SHA512

      ade02218c0fd1ef9290c3113cf993dd89e87d4fb66fa1b34afdc73c84876123cd742d2a36d8daa95e2a573d2aa7e880f3c8ba0c5c91916ed15e7c4f6ff847de3

      Download Submit

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

      5.3MB

      MD5

      1afff8d5352aecef2ecd47ffa02d7f7d

      SHA1

      8b115b84efdb3a1b87f750d35822b2609e665bef

      SHA256

      c41acc53cde89b94d55d6932ddd55a212ba910e1fade3da138670bb5b18ae4e1

      SHA512

      e5dc54c60be702e11772dc729eec5ec7140f293545aa3d57282adacddf686483393b0c940bbd397a9d50a6cda093865b143ae00c51ce3bf5d6b00241f97b3cdb

      Download Submit

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

      4.2MB

      MD5

      5a35a67c7f6d3546d7bd89bbe9c97c2e

      SHA1

      e08d11d0ab153ce9fc2be794574259d61f3d0df4

      SHA256

      75a23c3e927290e9976d57f5c5c9fff3da3ce909f06d09cdb23fceabfc8b8c3a

      SHA512

      b420d5ca86e1effdbe2b2593970c7c2f5c6e76b7679e4e416c5c21ffc0faedccc3872a8ceac3a44dc0f0a8ad04b7094a9b66966ddd01b1ed9e2a461c22926cc9

      Download Submit

    • \Users\Admin\AppData\Local\Temp\dbghelp.dll
      Filesize

      1.5MB

      MD5

      f0616fa8bc54ece07e3107057f74e4db

      SHA1

      b33995c4f9a004b7d806c4bb36040ee844781fca

      SHA256

      6e58fcf4d763022b1f79a3c448eb2ebd8ad1c15df3acf58416893f1cbc699026

      SHA512

      15242e3f5652d7f1d0e31cebadfe2f238ca3222f0e927eb7feb644ab2b3d33132cf2316ee5089324f20f72f1650ad5bb8dd82b96518386ce5b319fb5ceb8313c

      Download Submit

    • \Users\Admin\AppData\Local\Temp\symsrv.dll
      Filesize

      163KB

      MD5

      5c399d34d8dc01741269ff1f1aca7554

      SHA1

      e0ceed500d3cef5558f3f55d33ba9c3a709e8f55

      SHA256

      e11e0f7804bfc485b19103a940be3d382f31c1378caca0c63076e27797d7553f

      SHA512

      8ff9d38b22d73c595cc417427b59f5ca8e1fb7b47a2fa6aef25322bf6e614d6b71339a752d779bd736b4c1057239100ac8cc62629fd5d6556785a69bcdc3d73d

      Download Submit

    • memory/1584-25-0x0000000140000000-0x00000001405E8000-memory.dmp

      Filesize

      5.9MB

      Download

    • memory/1584-39-0x0000000140000000-0x00000001405E8000-memory.dmp

      Filesize

      5.9MB

      Download

    • memory/1912-0-0x0000000004830000-0x0000000004C28000-memory.dmp

      Filesize

      4.0MB

      Download

    • memory/1912-7-0x0000000004830000-0x0000000004C28000-memory.dmp

      Filesize

      4.0MB

      Download

    • memory/1912-4-0x0000000000400000-0x0000000004427000-memory.dmp

      Filesize

      64.2MB

      Download

    • memory/1912-2-0x00000000061C0000-0x0000000006AAB000-memory.dmp

      Filesize

      8.9MB

      Download

    • memory/1912-1-0x0000000004830000-0x0000000004C28000-memory.dmp

      Filesize

      4.0MB

      Download

    • memory/2060-16-0x0000000000400000-0x0000000004427000-memory.dmp

      Filesize

      64.2MB

      Download

    • memory/2060-6-0x0000000006020000-0x000000000690B000-memory.dmp

      Filesize

      8.9MB

      Download

    • memory/2060-5-0x0000000004500000-0x00000000048F8000-memory.dmp

      Filesize

      4.0MB

      Download

    • memory/2060-3-0x0000000004500000-0x00000000048F8000-memory.dmp

      Filesize

      4.0MB

      Download

    • memory/3024-17-0x0000000004760000-0x0000000004B58000-memory.dmp

      Filesize

      4.0MB

      Download

    • memory/3024-18-0x0000000004760000-0x0000000004B58000-memory.dmp

      Filesize

      4.0MB

      Download

    • memory/3024-110-0x0000000000400000-0x0000000004427000-memory.dmp

      Filesize

      64.2MB

      Download

    • memory/3024-111-0x0000000004760000-0x0000000004B58000-memory.dmp

      Filesize

      4.0MB

      Download

    • memory/3024-112-0x0000000000400000-0x0000000004427000-memory.dmp

      Filesize

      64.2MB

      Download

    • memory/3024-113-0x0000000000400000-0x0000000004427000-memory.dmp

      Filesize

      64.2MB

      Download

    • memory/3024-114-0x0000000000400000-0x0000000004427000-memory.dmp

      Filesize

      64.2MB

      Download

    • memory/3024-115-0x0000000000400000-0x0000000004427000-memory.dmp

      Filesize

      64.2MB

      Download

    • memory/3024-116-0x0000000000400000-0x0000000004427000-memory.dmp

      Filesize

      64.2MB

      Download

    • memory/3024-117-0x0000000000400000-0x0000000004427000-memory.dmp

      Filesize

      64.2MB

      Download

    • memory/3024-118-0x0000000000400000-0x0000000004427000-memory.dmp

      Filesize

      64.2MB

      Download

    • memory/3024-119-0x0000000000400000-0x0000000004427000-memory.dmp

      Filesize

      64.2MB

      Download

    • memory/3024-120-0x0000000000400000-0x0000000004427000-memory.dmp

      Filesize

      64.2MB

      Download

    • memory/3024-121-0x0000000000400000-0x0000000004427000-memory.dmp

      Filesize

      64.2MB

      Download

    • memory/3024-122-0x0000000000400000-0x0000000004427000-memory.dmp

      Filesize

      64.2MB

      Download

    • memory/3024-123-0x0000000000400000-0x0000000004427000-memory.dmp

      Filesize

      64.2MB

      Download

    • memory/3024-124-0x0000000000400000-0x0000000004427000-memory.dmp

      Filesize

      64.2MB

      Download