Analysis

  • max time kernel
    149s
  • max time network
    113s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240419-en
  • resource tags

    arch:x64arch:x86image:win11-20240419-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    27-04-2024 22:28

General

  • Target

    b40db341633ed3978b0c57412e0a51a3afc1d1ab49dc655f101ff37ab4a9f651.exe

  • Size

    4.2MB

  • MD5

    e3fcaa3820d74f982d85be79a6709bf0

  • SHA1

    2fc83c9a034523a6b91d621b5391e550908c3b9f

  • SHA256

    b40db341633ed3978b0c57412e0a51a3afc1d1ab49dc655f101ff37ab4a9f651

  • SHA512

    116dd9d1b666f32fa31f9650ffa1d08fc15a98c1a5db84248c68edacacbad2d5ab8fbfc4e815557bd65ef4e2c9622f95f0d121ad257e6a43f7fbc8e4960d0fb7

  • SSDEEP

    98304:3amOmyh13YwSD+iffg9rOMOczucEEdNxQlfwo87Elwi0PG1g:3Ty8Jy4o9ecZxQhwo8IinPG1g

Malware Config

Signatures

  • Glupteba

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

  • Glupteba payload 18 IoCs
  • Modifies Windows Firewall 2 TTPs 1 IoCs
  • Executes dropped EXE 2 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Checks installed software on the system 1 TTPs

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

  • Manipulates WinMonFS driver. 1 IoCs

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

  • Drops file in System32 directory 7 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 2 IoCs

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

  • Modifies data under HKEY_USERS 64 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 10 IoCs
  • Suspicious use of WriteProcessMemory 30 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.

Processes

  • C:\Users\Admin\AppData\Local\Temp\b40db341633ed3978b0c57412e0a51a3afc1d1ab49dc655f101ff37ab4a9f651.exe
    "C:\Users\Admin\AppData\Local\Temp\b40db341633ed3978b0c57412e0a51a3afc1d1ab49dc655f101ff37ab4a9f651.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2232
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      powershell -nologo -noprofile
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3028
    • C:\Users\Admin\AppData\Local\Temp\b40db341633ed3978b0c57412e0a51a3afc1d1ab49dc655f101ff37ab4a9f651.exe
      "C:\Users\Admin\AppData\Local\Temp\b40db341633ed3978b0c57412e0a51a3afc1d1ab49dc655f101ff37ab4a9f651.exe"
      2⤵
      • 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:2244
      • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        powershell -nologo -noprofile
        3⤵
        • Drops file in System32 directory
        • Modifies data under HKEY_USERS
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:1108
      • 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:1584
        • 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
          PID:3656
      • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        powershell -nologo -noprofile
        3⤵
        • Drops file in System32 directory
        • Modifies data under HKEY_USERS
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:1556
      • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        powershell -nologo -noprofile
        3⤵
        • Drops file in System32 directory
        • Modifies data under HKEY_USERS
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:2528
      • C:\Windows\rss\csrss.exe
        C:\Windows\rss\csrss.exe
        3⤵
        • Executes dropped EXE
        • Adds Run key to start application
        • Manipulates WinMonFS driver.
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:2416
        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
          powershell -nologo -noprofile
          4⤵
          • Drops file in System32 directory
          • Modifies data under HKEY_USERS
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:2600
        • 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:4888
        • C:\Windows\SYSTEM32\schtasks.exe
          schtasks /delete /tn ScheduledUpdate /f
          4⤵
            PID:4112
          • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
            powershell -nologo -noprofile
            4⤵
            • Drops file in System32 directory
            • Modifies data under HKEY_USERS
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:2064
          • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
            powershell -nologo -noprofile
            4⤵
            • Drops file in System32 directory
            • Modifies data under HKEY_USERS
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:1996
          • 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:1524
          • 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:656

    Network

    MITRE ATT&CK Matrix ATT&CK v13

    Execution

    Scheduled Task/Job

    1
    T1053

    Persistence

    Create or Modify System Process

    1
    T1543

    Windows Service

    1
    T1543.003

    Boot or Logon Autostart Execution

    1
    T1547

    Registry Run Keys / Startup Folder

    1
    T1547.001

    Scheduled Task/Job

    1
    T1053

    Privilege Escalation

    Create or Modify System Process

    1
    T1543

    Windows Service

    1
    T1543.003

    Boot or Logon Autostart Execution

    1
    T1547

    Registry Run Keys / Startup Folder

    1
    T1547.001

    Scheduled Task/Job

    1
    T1053

    Defense Evasion

    Impair Defenses

    1
    T1562

    Disable or Modify System Firewall

    1
    T1562.004

    Modify Registry

    1
    T1112

    Discovery

    Query Registry

    2
    T1012

    System Information Discovery

    1
    T1082

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_b5rv4xez.yyu.ps1
      Filesize

      60B

      MD5

      d17fe0a3f47be24a6453e9ef58c94641

      SHA1

      6ab83620379fc69f80c0242105ddffd7d98d5d9d

      SHA256

      96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

      SHA512

      5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

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

      281KB

      MD5

      d98e33b66343e7c96158444127a117f6

      SHA1

      bb716c5509a2bf345c6c1152f6e3e1452d39d50d

      SHA256

      5de4e2b07a26102fe527606ce5da1d5a4b938967c9d380a3c5fe86e2e34aaaf1

      SHA512

      705275e4a1ba8205eb799a8cf1737bc8ba686925e52c9198a6060a7abeee65552a85b814ac494a4b975d496a63be285f19a6265550585f2fc85824c42d7efab5

    • C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log
      Filesize

      2KB

      MD5

      d0c46cad6c0778401e21910bd6b56b70

      SHA1

      7be418951ea96326aca445b8dfe449b2bfa0dca6

      SHA256

      9600b3fdf0565ccb49e21656aa4b24d7c18f776bfd04d9ee984b134707550f02

      SHA512

      057531b468f7fbbb2175a696a8aab274dec0d17d9f71df309edcff35e064f3378050066a3df47ccd03048fac461594ec75e3d4fe64f9dd79949d129f51e02949

    • C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
      Filesize

      19KB

      MD5

      91e32b338335d5af496d95810382b98d

      SHA1

      69bd57196248d55a3fa843ad2cdd8b9f2a02fda2

      SHA256

      98f1e848d535c8058bf9a756a9458f6c154ae72d1eb82e1420e3182fc6f58e35

      SHA512

      96e048fd015b6b7d28e0e786f35a8d38d1ce8c0e178db3260b39250519a6fcf419393d8c699af017bf2fad8062b049f07533a521d278805ea1ecd8398538e6e7

    • C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
      Filesize

      19KB

      MD5

      09abfd319ccf8268576f0ffec46112f3

      SHA1

      a5e03ca70306f883543fbddc1ee7830fce24a1a8

      SHA256

      024e4b5a3e637ec707f861a4752e7c0a73887074416a660c6b8c2b691703cef0

      SHA512

      29fe7b3b0bad55074a796102ca1a0b13b9fc65c562657af1bdec4a8d7f1bad5288f6a654e49bb2a8c99b1d567a45e1fde2d5d809f5135b284268f1673cbf645b

    • C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
      Filesize

      19KB

      MD5

      2de7e146028af826ff2c86a5ae206b95

      SHA1

      1c1703ed9cfee439655d3926e9f0bfa2a6d0429e

      SHA256

      90aff1d308e2467d6c7ccbd83fdbc686702a4dfa8b0f0956c973383f5fa4711e

      SHA512

      e0d44a7e7c7e9cd52133ab0753b111536b836a9782daaf1d8972e410d794d066cf443a32606855f4e60e4547f5a0cb9201aac8a48c0d2c65c9c2545a9b53f469

    • C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
      Filesize

      19KB

      MD5

      fab6c752ec79551bdb0ca2b22ea32c74

      SHA1

      d7d2fd565ab3756bfaab1231c5567e240e13437e

      SHA256

      7ec2afd1fd9c7dffa017adb7162eaff5e63c8c835ca467ec027ddc0bedaadf89

      SHA512

      90fb56db444219c4ec37b4d4fee578ae0c007298b12cb01cea607843b82648364174cde04ab808eb86ff3191393aec604bee1b65cc3af67e614946e09698cec6

    • C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
      Filesize

      19KB

      MD5

      abf02167ece0bcf09592ec62c4c93cc3

      SHA1

      8c5c6bdf9df3ba0aef0a8b9d937db3e74f37edf1

      SHA256

      f83fbbd2d0b08920753e490b6a77e7ba30d090aad523037ff7703a56a92ccc69

      SHA512

      3aa871789f18513932b3c22ed2f661bd2397313d71fd79e7c687869bfda2272660106601871494f76fb539a8eda16ca3724f87c9e735847add2b6806633518dd

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

      4.2MB

      MD5

      e3fcaa3820d74f982d85be79a6709bf0

      SHA1

      2fc83c9a034523a6b91d621b5391e550908c3b9f

      SHA256

      b40db341633ed3978b0c57412e0a51a3afc1d1ab49dc655f101ff37ab4a9f651

      SHA512

      116dd9d1b666f32fa31f9650ffa1d08fc15a98c1a5db84248c68edacacbad2d5ab8fbfc4e815557bd65ef4e2c9622f95f0d121ad257e6a43f7fbc8e4960d0fb7

    • memory/1108-72-0x0000000007000000-0x0000000007015000-memory.dmp
      Filesize

      84KB

    • memory/1108-59-0x0000000005580000-0x00000000058D7000-memory.dmp
      Filesize

      3.3MB

    • memory/1108-71-0x0000000006FB0000-0x0000000006FC1000-memory.dmp
      Filesize

      68KB

    • memory/1108-70-0x0000000006CA0000-0x0000000006D44000-memory.dmp
      Filesize

      656KB

    • memory/1108-61-0x0000000070300000-0x0000000070657000-memory.dmp
      Filesize

      3.3MB

    • memory/1108-60-0x0000000070180000-0x00000000701CC000-memory.dmp
      Filesize

      304KB

    • memory/1556-86-0x0000000070390000-0x00000000706E7000-memory.dmp
      Filesize

      3.3MB

    • memory/1556-85-0x0000000070180000-0x00000000701CC000-memory.dmp
      Filesize

      304KB

    • memory/1996-183-0x0000000006090000-0x00000000063E7000-memory.dmp
      Filesize

      3.3MB

    • memory/1996-185-0x00000000700A0000-0x00000000700EC000-memory.dmp
      Filesize

      304KB

    • memory/1996-186-0x00000000702F0000-0x0000000070647000-memory.dmp
      Filesize

      3.3MB

    • memory/2064-171-0x0000000007AA0000-0x0000000007B44000-memory.dmp
      Filesize

      656KB

    • memory/2064-173-0x0000000006670000-0x0000000006685000-memory.dmp
      Filesize

      84KB

    • memory/2064-157-0x00000000062F0000-0x0000000006647000-memory.dmp
      Filesize

      3.3MB

    • memory/2064-159-0x0000000006A00000-0x0000000006A4C000-memory.dmp
      Filesize

      304KB

    • memory/2064-161-0x00000000700A0000-0x00000000700EC000-memory.dmp
      Filesize

      304KB

    • memory/2064-162-0x0000000070220000-0x0000000070577000-memory.dmp
      Filesize

      3.3MB

    • memory/2064-172-0x0000000007DE0000-0x0000000007DF1000-memory.dmp
      Filesize

      68KB

    • memory/2232-96-0x00000000020E0000-0x00000000024E4000-memory.dmp
      Filesize

      4.0MB

    • memory/2232-2-0x0000000003F10000-0x00000000047FB000-memory.dmp
      Filesize

      8.9MB

    • memory/2232-124-0x0000000003F10000-0x00000000047FB000-memory.dmp
      Filesize

      8.9MB

    • memory/2232-95-0x0000000000400000-0x0000000001DFB000-memory.dmp
      Filesize

      26.0MB

    • memory/2232-1-0x00000000020E0000-0x00000000024E4000-memory.dmp
      Filesize

      4.0MB

    • memory/2232-3-0x0000000000400000-0x0000000001DFB000-memory.dmp
      Filesize

      26.0MB

    • memory/2244-145-0x0000000000400000-0x0000000001DFB000-memory.dmp
      Filesize

      26.0MB

    • memory/2416-229-0x0000000000400000-0x0000000001DFB000-memory.dmp
      Filesize

      26.0MB

    • memory/2416-208-0x0000000000400000-0x0000000001DFB000-memory.dmp
      Filesize

      26.0MB

    • memory/2416-220-0x0000000000400000-0x0000000001DFB000-memory.dmp
      Filesize

      26.0MB

    • memory/2416-223-0x0000000000400000-0x0000000001DFB000-memory.dmp
      Filesize

      26.0MB

    • memory/2416-205-0x0000000000400000-0x0000000001DFB000-memory.dmp
      Filesize

      26.0MB

    • memory/2416-225-0x0000000000400000-0x0000000001DFB000-memory.dmp
      Filesize

      26.0MB

    • memory/2416-217-0x0000000000400000-0x0000000001DFB000-memory.dmp
      Filesize

      26.0MB

    • memory/2416-232-0x0000000000400000-0x0000000001DFB000-memory.dmp
      Filesize

      26.0MB

    • memory/2416-213-0x0000000000400000-0x0000000001DFB000-memory.dmp
      Filesize

      26.0MB

    • memory/2416-202-0x0000000000400000-0x0000000001DFB000-memory.dmp
      Filesize

      26.0MB

    • memory/2416-211-0x0000000000400000-0x0000000001DFB000-memory.dmp
      Filesize

      26.0MB

    • memory/2416-235-0x0000000000400000-0x0000000001DFB000-memory.dmp
      Filesize

      26.0MB

    • memory/2416-148-0x0000000000400000-0x0000000001DFB000-memory.dmp
      Filesize

      26.0MB

    • memory/2528-109-0x0000000070320000-0x0000000070677000-memory.dmp
      Filesize

      3.3MB

    • memory/2528-108-0x0000000070180000-0x00000000701CC000-memory.dmp
      Filesize

      304KB

    • memory/2528-106-0x0000000006090000-0x00000000063E7000-memory.dmp
      Filesize

      3.3MB

    • memory/2600-135-0x0000000070390000-0x00000000706E7000-memory.dmp
      Filesize

      3.3MB

    • memory/2600-134-0x0000000070180000-0x00000000701CC000-memory.dmp
      Filesize

      304KB

    • memory/3028-10-0x0000000005A90000-0x0000000005AF6000-memory.dmp
      Filesize

      408KB

    • memory/3028-8-0x0000000005140000-0x0000000005162000-memory.dmp
      Filesize

      136KB

    • memory/3028-37-0x0000000007460000-0x0000000007504000-memory.dmp
      Filesize

      656KB

    • memory/3028-9-0x0000000005A20000-0x0000000005A86000-memory.dmp
      Filesize

      408KB

    • memory/3028-6-0x0000000002B10000-0x0000000002B20000-memory.dmp
      Filesize

      64KB

    • memory/3028-19-0x0000000005B00000-0x0000000005E57000-memory.dmp
      Filesize

      3.3MB

    • memory/3028-20-0x0000000005FD0000-0x0000000005FEE000-memory.dmp
      Filesize

      120KB

    • memory/3028-21-0x0000000006070000-0x00000000060BC000-memory.dmp
      Filesize

      304KB

    • memory/3028-22-0x0000000006580000-0x00000000065C6000-memory.dmp
      Filesize

      280KB

    • memory/3028-23-0x000000007FA20000-0x000000007FA30000-memory.dmp
      Filesize

      64KB

    • memory/3028-25-0x0000000070180000-0x00000000701CC000-memory.dmp
      Filesize

      304KB

    • memory/3028-7-0x00000000051C0000-0x00000000057EA000-memory.dmp
      Filesize

      6.2MB

    • memory/3028-5-0x0000000073F10000-0x00000000746C1000-memory.dmp
      Filesize

      7.7MB

    • memory/3028-4-0x0000000002B20000-0x0000000002B56000-memory.dmp
      Filesize

      216KB

    • memory/3028-24-0x00000000073E0000-0x0000000007414000-memory.dmp
      Filesize

      208KB

    • memory/3028-26-0x0000000070390000-0x00000000706E7000-memory.dmp
      Filesize

      3.3MB

    • memory/3028-36-0x0000000002B10000-0x0000000002B20000-memory.dmp
      Filesize

      64KB

    • memory/3028-35-0x0000000007440000-0x000000000745E000-memory.dmp
      Filesize

      120KB

    • memory/3028-49-0x0000000073F10000-0x00000000746C1000-memory.dmp
      Filesize

      7.7MB

    • memory/3028-46-0x00000000076C0000-0x00000000076C8000-memory.dmp
      Filesize

      32KB

    • memory/3028-45-0x00000000076A0000-0x00000000076BA000-memory.dmp
      Filesize

      104KB

    • memory/3028-44-0x0000000007650000-0x0000000007665000-memory.dmp
      Filesize

      84KB

    • memory/3028-43-0x0000000007640000-0x000000000764E000-memory.dmp
      Filesize

      56KB

    • memory/3028-42-0x00000000075F0000-0x0000000007601000-memory.dmp
      Filesize

      68KB

    • memory/3028-41-0x00000000076E0000-0x0000000007776000-memory.dmp
      Filesize

      600KB

    • memory/3028-40-0x00000000075D0000-0x00000000075DA000-memory.dmp
      Filesize

      40KB

    • memory/3028-39-0x0000000007590000-0x00000000075AA000-memory.dmp
      Filesize

      104KB

    • memory/3028-38-0x0000000007BD0000-0x000000000824A000-memory.dmp
      Filesize

      6.5MB