Analysis

  • max time kernel
    151s
  • max time network
    159s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 13:49

General

  • Target

    82ae76be0256c376f07656f2ba0635abaf1c1b6159480ed8ceca36894f51f0d3.exe

  • Size

    172KB

  • MD5

    5ccecef24e3f696769cd2a93eedbf3d1

  • SHA1

    9178aedf82ac47a2f85436a9075e3bfd97596a92

  • SHA256

    82ae76be0256c376f07656f2ba0635abaf1c1b6159480ed8ceca36894f51f0d3

  • SHA512

    ac4136ce8b64645034f39533b5a0c8f7f3772c73c3294828d2d1c22a68ad548ff87a1aed52ab6222b34b1c4bfc85e570967c528c8f68bbed16237425f200ad64

  • SSDEEP

    3072:iOvYX/j8uGJRsBk7DccKs+gtTLjn7TwndWERRJqqEV4wYoUzI7NE:/RuGkBkEcKs5/T9qLzK+lza

Malware Config

Signatures

  • Executes dropped EXE 1 IoCs
  • Deletes itself 1 IoCs
  • Loads dropped DLL 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.

  • Suspicious use of SetThreadContext 1 IoCs
  • Modifies Internet Explorer settings 1 TTPs 2 IoCs
  • NTFS ADS 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 30 IoCs
  • Suspicious use of AdjustPrivilegeToken 18 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Windows\system32\taskhost.exe
    "taskhost.exe"
    1⤵
      PID:1300
    • C:\Windows\Explorer.EXE
      C:\Windows\Explorer.EXE
      1⤵
        PID:1444
        • C:\Users\Admin\AppData\Local\Temp\82ae76be0256c376f07656f2ba0635abaf1c1b6159480ed8ceca36894f51f0d3.exe
          "C:\Users\Admin\AppData\Local\Temp\82ae76be0256c376f07656f2ba0635abaf1c1b6159480ed8ceca36894f51f0d3.exe"
          2⤵
          • Loads dropped DLL
          • Suspicious use of SetThreadContext
          • Modifies Internet Explorer settings
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:1112
          • C:\Users\Admin\AppData\Roaming\Acryb\masu.exe
            "C:\Users\Admin\AppData\Roaming\Acryb\masu.exe"
            3⤵
            • Executes dropped EXE
            • Adds Run key to start application
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of WriteProcessMemory
            PID:1132
          • C:\Windows\SysWOW64\cmd.exe
            "C:\Windows\system32\cmd.exe" /c "C:\Users\Admin\AppData\Local\Temp\tmp459cb4de.bat"
            3⤵
            • Deletes itself
            • Suspicious use of AdjustPrivilegeToken
            PID:1816
      • C:\Windows\system32\Dwm.exe
        "C:\Windows\system32\Dwm.exe"
        1⤵
          PID:1404
        • C:\Program Files\Windows Mail\WinMail.exe
          "C:\Program Files\Windows Mail\WinMail.exe" -Embedding
          1⤵
          • NTFS ADS
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of SetWindowsHookEx
          PID:1768
        • C:\Windows\system32\DllHost.exe
          C:\Windows\system32\DllHost.exe /Processid:{3EB3C877-1F16-487C-9050-104DBCD66683}
          1⤵
            PID:544
          • C:\Windows\system32\conhost.exe
            \??\C:\Windows\system32\conhost.exe "141968072198778339-1236138057-27291922-1158242217-7435428931440222751505185601"
            1⤵
              PID:1432
            • C:\Windows\system32\DllHost.exe
              C:\Windows\system32\DllHost.exe /Processid:{F9717507-6651-4EDB-BFF7-AE615179BCCF}
              1⤵
                PID:1652
              • C:\Windows\system32\DllHost.exe
                C:\Windows\system32\DllHost.exe /Processid:{F9717507-6651-4EDB-BFF7-AE615179BCCF}
                1⤵
                  PID:1348
                • C:\Windows\system32\DllHost.exe
                  C:\Windows\system32\DllHost.exe /Processid:{F9717507-6651-4EDB-BFF7-AE615179BCCF}
                  1⤵
                    PID:636
                  • C:\Windows\system32\DllHost.exe
                    C:\Windows\system32\DllHost.exe /Processid:{F9717507-6651-4EDB-BFF7-AE615179BCCF}
                    1⤵
                      PID:1636
                    • C:\Windows\system32\DllHost.exe
                      C:\Windows\system32\DllHost.exe /Processid:{F9717507-6651-4EDB-BFF7-AE615179BCCF}
                      1⤵
                        PID:2044

                      Network

                      MITRE ATT&CK Matrix ATT&CK v6

                      Persistence

                      Registry Run Keys / Startup Folder

                      1
                      T1060

                      Defense Evasion

                      Modify Registry

                      2
                      T1112

                      Discovery

                      Query Registry

                      1
                      T1012

                      Replay Monitor

                      Loading Replay Monitor...

                      Downloads

                      • C:\Users\Admin\AppData\Local\Temp\tmp459cb4de.bat
                        Filesize

                        307B

                        MD5

                        55c61b240e650c917755b542d4f6dee4

                        SHA1

                        3b91c74aa7afaab99b2c98e01503eb9398c487be

                        SHA256

                        e0077e8b8170415cfd317bdebc230048b7abf3e685f39ff10d2041c1a2847835

                        SHA512

                        c8bcdeb96ff765b03144afee0253aca1d9ab7e1f2cd0ce8ece51b9c270f527cb96309f01c8031dccc8065aa68eeaea45a6cd8a5085ca88dddb7dc8a80f44b942

                      • C:\Users\Admin\AppData\Roaming\Acryb\masu.exe
                        Filesize

                        172KB

                        MD5

                        8ef7a9fd1c748545bdd8fa1f8d7a8ca3

                        SHA1

                        171c3075900b3092dbc29ea5273de2481850259c

                        SHA256

                        1cee1a014fde8f53c74b5ad8374381294aab86fb78a3884955ddbfc3a22530d7

                        SHA512

                        50d6d655dcb638ad0bd258c5261610c28bc7f7a583b71c8765c8d4134473c28d60ff0446dd9db7ac39d9f2553c26a7c5c8bf1fd2c88ba98195c62cb9e4b5b954

                      • C:\Users\Admin\AppData\Roaming\Acryb\masu.exe
                        Filesize

                        172KB

                        MD5

                        8ef7a9fd1c748545bdd8fa1f8d7a8ca3

                        SHA1

                        171c3075900b3092dbc29ea5273de2481850259c

                        SHA256

                        1cee1a014fde8f53c74b5ad8374381294aab86fb78a3884955ddbfc3a22530d7

                        SHA512

                        50d6d655dcb638ad0bd258c5261610c28bc7f7a583b71c8765c8d4134473c28d60ff0446dd9db7ac39d9f2553c26a7c5c8bf1fd2c88ba98195c62cb9e4b5b954

                      • C:\Users\Admin\AppData\Roaming\Nudua\becux.ahf
                        Filesize

                        4KB

                        MD5

                        bd26f8310825a53502f18440417c678c

                        SHA1

                        4211f1340cea2954ca4fdff73d4219d28ef863bd

                        SHA256

                        6343cadfd8d4eda8d110e6c4379063a077d4ffbe76f861418e0c92b2b5dc0072

                        SHA512

                        55b498ae0a1e7f9d160623a2832ef39880fc18decfac33ad77aa79446ecdd5c9ac20ed7a7ed2caa8fb807244bb6fc48bc74626af4330a23a5fea40e1120819a8

                      • \Users\Admin\AppData\Roaming\Acryb\masu.exe
                        Filesize

                        172KB

                        MD5

                        8ef7a9fd1c748545bdd8fa1f8d7a8ca3

                        SHA1

                        171c3075900b3092dbc29ea5273de2481850259c

                        SHA256

                        1cee1a014fde8f53c74b5ad8374381294aab86fb78a3884955ddbfc3a22530d7

                        SHA512

                        50d6d655dcb638ad0bd258c5261610c28bc7f7a583b71c8765c8d4134473c28d60ff0446dd9db7ac39d9f2553c26a7c5c8bf1fd2c88ba98195c62cb9e4b5b954

                      • \Users\Admin\AppData\Roaming\Acryb\masu.exe
                        Filesize

                        172KB

                        MD5

                        8ef7a9fd1c748545bdd8fa1f8d7a8ca3

                        SHA1

                        171c3075900b3092dbc29ea5273de2481850259c

                        SHA256

                        1cee1a014fde8f53c74b5ad8374381294aab86fb78a3884955ddbfc3a22530d7

                        SHA512

                        50d6d655dcb638ad0bd258c5261610c28bc7f7a583b71c8765c8d4134473c28d60ff0446dd9db7ac39d9f2553c26a7c5c8bf1fd2c88ba98195c62cb9e4b5b954

                      • memory/1112-119-0x0000000000330000-0x0000000000366000-memory.dmp
                        Filesize

                        216KB

                      • memory/1112-90-0x0000000000330000-0x0000000000366000-memory.dmp
                        Filesize

                        216KB

                      • memory/1112-103-0x0000000000330000-0x0000000000366000-memory.dmp
                        Filesize

                        216KB

                      • memory/1112-105-0x0000000000330000-0x0000000000366000-memory.dmp
                        Filesize

                        216KB

                      • memory/1112-107-0x0000000000330000-0x0000000000366000-memory.dmp
                        Filesize

                        216KB

                      • memory/1112-57-0x0000000000400000-0x000000000045B000-memory.dmp
                        Filesize

                        364KB

                      • memory/1112-109-0x0000000000330000-0x0000000000366000-memory.dmp
                        Filesize

                        216KB

                      • memory/1112-127-0x0000000000330000-0x0000000000366000-memory.dmp
                        Filesize

                        216KB

                      • memory/1112-54-0x0000000000400000-0x000000000045B000-memory.dmp
                        Filesize

                        364KB

                      • memory/1112-123-0x0000000000330000-0x0000000000366000-memory.dmp
                        Filesize

                        216KB

                      • memory/1112-125-0x0000000000330000-0x0000000000366000-memory.dmp
                        Filesize

                        216KB

                      • memory/1112-55-0x0000000000270000-0x00000000002CB000-memory.dmp
                        Filesize

                        364KB

                      • memory/1112-121-0x0000000000330000-0x0000000000366000-memory.dmp
                        Filesize

                        216KB

                      • memory/1112-115-0x0000000000330000-0x0000000000366000-memory.dmp
                        Filesize

                        216KB

                      • memory/1112-99-0x0000000000330000-0x0000000000366000-memory.dmp
                        Filesize

                        216KB

                      • memory/1112-88-0x0000000000330000-0x0000000000366000-memory.dmp
                        Filesize

                        216KB

                      • memory/1112-87-0x0000000000330000-0x0000000000366000-memory.dmp
                        Filesize

                        216KB

                      • memory/1112-374-0x0000000000330000-0x0000000000366000-memory.dmp
                        Filesize

                        216KB

                      • memory/1112-373-0x0000000000400000-0x000000000045B000-memory.dmp
                        Filesize

                        364KB

                      • memory/1112-101-0x0000000000330000-0x0000000000366000-memory.dmp
                        Filesize

                        216KB

                      • memory/1112-56-0x0000000075351000-0x0000000075353000-memory.dmp
                        Filesize

                        8KB

                      • memory/1112-216-0x0000000000330000-0x0000000000366000-memory.dmp
                        Filesize

                        216KB

                      • memory/1112-89-0x0000000000330000-0x0000000000366000-memory.dmp
                        Filesize

                        216KB

                      • memory/1112-91-0x0000000000330000-0x0000000000366000-memory.dmp
                        Filesize

                        216KB

                      • memory/1112-97-0x0000000000330000-0x0000000000366000-memory.dmp
                        Filesize

                        216KB

                      • memory/1112-95-0x0000000000330000-0x0000000000366000-memory.dmp
                        Filesize

                        216KB

                      • memory/1112-93-0x0000000000330000-0x0000000000366000-memory.dmp
                        Filesize

                        216KB

                      • memory/1112-218-0x0000000000270000-0x00000000002CB000-memory.dmp
                        Filesize

                        364KB

                      • memory/1112-217-0x0000000000400000-0x000000000045B000-memory.dmp
                        Filesize

                        364KB

                      • memory/1112-111-0x0000000000330000-0x0000000000366000-memory.dmp
                        Filesize

                        216KB

                      • memory/1112-113-0x0000000000330000-0x0000000000366000-memory.dmp
                        Filesize

                        216KB

                      • memory/1112-117-0x0000000000330000-0x0000000000366000-memory.dmp
                        Filesize

                        216KB

                      • memory/1132-60-0x0000000000000000-mapping.dmp
                      • memory/1132-376-0x0000000000400000-0x000000000045B000-memory.dmp
                        Filesize

                        364KB

                      • memory/1132-65-0x0000000000460000-0x00000000004BB000-memory.dmp
                        Filesize

                        364KB

                      • memory/1132-64-0x0000000000400000-0x000000000045B000-memory.dmp
                        Filesize

                        364KB

                      • memory/1132-63-0x0000000000400000-0x000000000045B000-memory.dmp
                        Filesize

                        364KB

                      • memory/1132-215-0x0000000000400000-0x000000000045B000-memory.dmp
                        Filesize

                        364KB

                      • memory/1300-72-0x0000000000190000-0x00000000001C6000-memory.dmp
                        Filesize

                        216KB

                      • memory/1300-71-0x0000000000190000-0x00000000001C6000-memory.dmp
                        Filesize

                        216KB

                      • memory/1300-70-0x0000000000190000-0x00000000001C6000-memory.dmp
                        Filesize

                        216KB

                      • memory/1300-69-0x0000000000190000-0x00000000001C6000-memory.dmp
                        Filesize

                        216KB

                      • memory/1300-67-0x0000000000190000-0x00000000001C6000-memory.dmp
                        Filesize

                        216KB

                      • memory/1404-76-0x0000000000120000-0x0000000000156000-memory.dmp
                        Filesize

                        216KB

                      • memory/1404-75-0x0000000000120000-0x0000000000156000-memory.dmp
                        Filesize

                        216KB

                      • memory/1404-77-0x0000000000120000-0x0000000000156000-memory.dmp
                        Filesize

                        216KB

                      • memory/1404-78-0x0000000000120000-0x0000000000156000-memory.dmp
                        Filesize

                        216KB

                      • memory/1444-81-0x0000000002530000-0x0000000002566000-memory.dmp
                        Filesize

                        216KB

                      • memory/1444-82-0x0000000002530000-0x0000000002566000-memory.dmp
                        Filesize

                        216KB

                      • memory/1444-83-0x0000000002530000-0x0000000002566000-memory.dmp
                        Filesize

                        216KB

                      • memory/1444-84-0x0000000002530000-0x0000000002566000-memory.dmp
                        Filesize

                        216KB

                      • memory/1816-247-0x000000000005AD6D-mapping.dmp
                      • memory/1816-375-0x0000000000050000-0x0000000000086000-memory.dmp
                        Filesize

                        216KB