Analysis

  • max time kernel
    180s
  • max time network
    232s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    28-11-2022 16:11

General

  • Target

    791a4ae5c169f772f20c12cdc181ad649a1ddc9dba41051939c1a8e30225af56.exe

  • Size

    236KB

  • MD5

    9703fc80b31c3da2783be988d68bd562

  • SHA1

    088dc9d61c397f9ebe8dbf254d6674fa8985761f

  • SHA256

    791a4ae5c169f772f20c12cdc181ad649a1ddc9dba41051939c1a8e30225af56

  • SHA512

    ef5c31ddf307eb6f18727eddb3edc84c5ccc516b55aa1d17bae03941d8f6e93b291e6e41a57a9508b5b405c320db1d2e407c3fe35335385d6733acf9aca2406b

  • SSDEEP

    6144:VwHysRxa3xXWyP9GUhxEkNcianEQ20M/IhAMPAFcvYfQjPeJ:+RQ3xXWgGUhxEecjEllIroFp+Pe

Score
8/10

Malware Config

Signatures

  • Executes dropped EXE 2 IoCs
  • Deletes itself 1 IoCs
  • Loads dropped DLL 3 IoCs
  • Adds Run key to start application 2 TTPs 3 IoCs
  • Suspicious use of SetThreadContext 2 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • NSIS installer 8 IoCs
  • Suspicious behavior: EnumeratesProcesses 23 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Windows\system32\taskhost.exe
    "taskhost.exe"
    1⤵
      PID:1176
    • C:\Windows\Explorer.EXE
      C:\Windows\Explorer.EXE
      1⤵
        PID:1312
        • C:\Users\Admin\AppData\Local\Temp\791a4ae5c169f772f20c12cdc181ad649a1ddc9dba41051939c1a8e30225af56.exe
          "C:\Users\Admin\AppData\Local\Temp\791a4ae5c169f772f20c12cdc181ad649a1ddc9dba41051939c1a8e30225af56.exe"
          2⤵
          • Loads dropped DLL
          • Suspicious use of SetThreadContext
          • Suspicious use of WriteProcessMemory
          PID:2036
          • C:\Users\Admin\AppData\Local\Temp\791a4ae5c169f772f20c12cdc181ad649a1ddc9dba41051939c1a8e30225af56.exe
            "C:\Users\Admin\AppData\Local\Temp\791a4ae5c169f772f20c12cdc181ad649a1ddc9dba41051939c1a8e30225af56.exe"
            3⤵
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of WriteProcessMemory
            PID:340
            • C:\Users\Admin\AppData\Roaming\Suyb\vieh.exe
              "C:\Users\Admin\AppData\Roaming\Suyb\vieh.exe"
              4⤵
              • Executes dropped EXE
              • Loads dropped DLL
              • Suspicious use of SetThreadContext
              • Suspicious use of WriteProcessMemory
              PID:468
              • C:\Users\Admin\AppData\Roaming\Suyb\vieh.exe
                "C:\Users\Admin\AppData\Roaming\Suyb\vieh.exe"
                5⤵
                • Executes dropped EXE
                • Adds Run key to start application
                • Suspicious behavior: EnumeratesProcesses
                • Suspicious use of WriteProcessMemory
                PID:1588
            • C:\Windows\SysWOW64\cmd.exe
              "C:\Windows\system32\cmd.exe" /c "C:\Users\Admin\AppData\Local\Temp\tmpb8e847ed.bat"
              4⤵
              • Deletes itself
              PID:1828
      • C:\Windows\system32\Dwm.exe
        "C:\Windows\system32\Dwm.exe"
        1⤵
          PID:1276
        • C:\Windows\system32\DllHost.exe
          C:\Windows\system32\DllHost.exe /Processid:{3EB3C877-1F16-487C-9050-104DBCD66683}
          1⤵
            PID:1836
          • C:\Windows\system32\DllHost.exe
            C:\Windows\system32\DllHost.exe /Processid:{F9717507-6651-4EDB-BFF7-AE615179BCCF}
            1⤵
              PID:1516
            • C:\Windows\system32\DllHost.exe
              C:\Windows\system32\DllHost.exe /Processid:{F9717507-6651-4EDB-BFF7-AE615179BCCF}
              1⤵
                PID:1160
              • C:\Windows\system32\DllHost.exe
                C:\Windows\system32\DllHost.exe /Processid:{F9717507-6651-4EDB-BFF7-AE615179BCCF}
                1⤵
                  PID:544
                • C:\Windows\system32\DllHost.exe
                  C:\Windows\system32\DllHost.exe /Processid:{F9717507-6651-4EDB-BFF7-AE615179BCCF}
                  1⤵
                    PID:1536

                  Network

                  MITRE ATT&CK Matrix ATT&CK v6

                  Persistence

                  Registry Run Keys / Startup Folder

                  1
                  T1060

                  Defense Evasion

                  Modify Registry

                  1
                  T1112

                  Discovery

                  System Information Discovery

                  1
                  T1082

                  Replay Monitor

                  Loading Replay Monitor...

                  Downloads

                  • C:\Users\Admin\AppData\Local\Temp\tmpb8e847ed.bat
                    Filesize

                    307B

                    MD5

                    fc1ca3b0672ab28aa2bb5b303bb5664a

                    SHA1

                    c3bec2404eb90668d85e2ba35c9635b9d2d7a876

                    SHA256

                    4fa865d3dc8820a629337f89b1a84b3ce50353108022839f2527c4bf95ed494c

                    SHA512

                    1d50ee9fff9068af847f49aa8ce052f19a7de4a9cd4b75939ca11329d7c927d40b4cf1c38e3639570e31f9b419a5e82b2c8a91ffd5e962df4b806f70e270a506

                  • C:\Users\Admin\AppData\Roaming\Suyb\vieh.exe
                    Filesize

                    236KB

                    MD5

                    2b625fdfc797a2eebd321db83b5a2824

                    SHA1

                    4f49d8abf98c761570f927950b6acdd7beaf6446

                    SHA256

                    4f39a4dde346a7061f44c733da39357d6b70d4b56b0525bc3cdee5ebb07e560c

                    SHA512

                    adf1db9b6a54d74e74a3c9b50436af203185cc8af9d706f6e30a1c3b0c19bebfa7d4d68dc589acc05d5bc42a059432703b222051e0edff63ea3438e37d742608

                  • C:\Users\Admin\AppData\Roaming\Suyb\vieh.exe
                    Filesize

                    236KB

                    MD5

                    2b625fdfc797a2eebd321db83b5a2824

                    SHA1

                    4f49d8abf98c761570f927950b6acdd7beaf6446

                    SHA256

                    4f39a4dde346a7061f44c733da39357d6b70d4b56b0525bc3cdee5ebb07e560c

                    SHA512

                    adf1db9b6a54d74e74a3c9b50436af203185cc8af9d706f6e30a1c3b0c19bebfa7d4d68dc589acc05d5bc42a059432703b222051e0edff63ea3438e37d742608

                  • C:\Users\Admin\AppData\Roaming\Suyb\vieh.exe
                    Filesize

                    236KB

                    MD5

                    2b625fdfc797a2eebd321db83b5a2824

                    SHA1

                    4f49d8abf98c761570f927950b6acdd7beaf6446

                    SHA256

                    4f39a4dde346a7061f44c733da39357d6b70d4b56b0525bc3cdee5ebb07e560c

                    SHA512

                    adf1db9b6a54d74e74a3c9b50436af203185cc8af9d706f6e30a1c3b0c19bebfa7d4d68dc589acc05d5bc42a059432703b222051e0edff63ea3438e37d742608

                  • C:\Users\Admin\AppData\Roaming\toad-in-the-hole.a
                    MD5

                    d41d8cd98f00b204e9800998ecf8427e

                    SHA1

                    da39a3ee5e6b4b0d3255bfef95601890afd80709

                    SHA256

                    e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

                    SHA512

                    cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

                  • \Users\Admin\AppData\Local\Temp\nse7467.tmp\toad-in-the-hole.dll
                    Filesize

                    52KB

                    MD5

                    f5dfb1fd67d735558456cbb320cbff01

                    SHA1

                    060e29785171cc7452b35d09b226dc6188714c20

                    SHA256

                    2284ab1c8ff0061e5e786b506ebfc3bf2f037c5979087b6c631bb6bb7777573f

                    SHA512

                    21af5b2f1a1216348db06abf9c9508e4d593a95acdf4730db7a4249aad3504791d7ff7c15fa3a44ac8ae801753e22ae24b6c661eef69c3217b48fea2cc975942

                  • \Users\Admin\AppData\Local\Temp\nsjF2C9.tmp\toad-in-the-hole.dll
                    Filesize

                    52KB

                    MD5

                    f5dfb1fd67d735558456cbb320cbff01

                    SHA1

                    060e29785171cc7452b35d09b226dc6188714c20

                    SHA256

                    2284ab1c8ff0061e5e786b506ebfc3bf2f037c5979087b6c631bb6bb7777573f

                    SHA512

                    21af5b2f1a1216348db06abf9c9508e4d593a95acdf4730db7a4249aad3504791d7ff7c15fa3a44ac8ae801753e22ae24b6c661eef69c3217b48fea2cc975942

                  • \Users\Admin\AppData\Roaming\Suyb\vieh.exe
                    Filesize

                    236KB

                    MD5

                    2b625fdfc797a2eebd321db83b5a2824

                    SHA1

                    4f49d8abf98c761570f927950b6acdd7beaf6446

                    SHA256

                    4f39a4dde346a7061f44c733da39357d6b70d4b56b0525bc3cdee5ebb07e560c

                    SHA512

                    adf1db9b6a54d74e74a3c9b50436af203185cc8af9d706f6e30a1c3b0c19bebfa7d4d68dc589acc05d5bc42a059432703b222051e0edff63ea3438e37d742608

                  • memory/340-71-0x0000000000400000-0x000000000043B000-memory.dmp
                    Filesize

                    236KB

                  • memory/340-89-0x0000000000400000-0x000000000043B000-memory.dmp
                    Filesize

                    236KB

                  • memory/340-62-0x0000000000400000-0x000000000043B000-memory.dmp
                    Filesize

                    236KB

                  • memory/340-57-0x0000000000400000-0x000000000043B000-memory.dmp
                    Filesize

                    236KB

                  • memory/340-66-0x0000000000400000-0x000000000043B000-memory.dmp
                    Filesize

                    236KB

                  • memory/340-63-0x000000000042B055-mapping.dmp
                  • memory/340-60-0x0000000000400000-0x000000000043B000-memory.dmp
                    Filesize

                    236KB

                  • memory/340-56-0x0000000000400000-0x000000000043B000-memory.dmp
                    Filesize

                    236KB

                  • memory/340-59-0x0000000000400000-0x000000000043B000-memory.dmp
                    Filesize

                    236KB

                  • memory/468-68-0x0000000000000000-mapping.dmp
                  • memory/544-129-0x0000000000440000-0x000000000047B000-memory.dmp
                    Filesize

                    236KB

                  • memory/544-132-0x0000000000440000-0x000000000047B000-memory.dmp
                    Filesize

                    236KB

                  • memory/544-131-0x0000000000440000-0x000000000047B000-memory.dmp
                    Filesize

                    236KB

                  • memory/544-130-0x0000000000440000-0x000000000047B000-memory.dmp
                    Filesize

                    236KB

                  • memory/1160-123-0x0000000001DF0000-0x0000000001E2B000-memory.dmp
                    Filesize

                    236KB

                  • memory/1160-126-0x0000000001DF0000-0x0000000001E2B000-memory.dmp
                    Filesize

                    236KB

                  • memory/1160-125-0x0000000001DF0000-0x0000000001E2B000-memory.dmp
                    Filesize

                    236KB

                  • memory/1160-124-0x0000000001DF0000-0x0000000001E2B000-memory.dmp
                    Filesize

                    236KB

                  • memory/1176-93-0x0000000001CB0000-0x0000000001CEB000-memory.dmp
                    Filesize

                    236KB

                  • memory/1176-91-0x0000000001CB0000-0x0000000001CEB000-memory.dmp
                    Filesize

                    236KB

                  • memory/1176-92-0x0000000001CB0000-0x0000000001CEB000-memory.dmp
                    Filesize

                    236KB

                  • memory/1176-94-0x0000000001CB0000-0x0000000001CEB000-memory.dmp
                    Filesize

                    236KB

                  • memory/1276-99-0x00000000001A0000-0x00000000001DB000-memory.dmp
                    Filesize

                    236KB

                  • memory/1276-100-0x00000000001A0000-0x00000000001DB000-memory.dmp
                    Filesize

                    236KB

                  • memory/1276-101-0x00000000001A0000-0x00000000001DB000-memory.dmp
                    Filesize

                    236KB

                  • memory/1276-98-0x00000000001A0000-0x00000000001DB000-memory.dmp
                    Filesize

                    236KB

                  • memory/1312-104-0x00000000025A0000-0x00000000025DB000-memory.dmp
                    Filesize

                    236KB

                  • memory/1312-105-0x00000000025A0000-0x00000000025DB000-memory.dmp
                    Filesize

                    236KB

                  • memory/1312-106-0x00000000025A0000-0x00000000025DB000-memory.dmp
                    Filesize

                    236KB

                  • memory/1312-107-0x00000000025A0000-0x00000000025DB000-memory.dmp
                    Filesize

                    236KB

                  • memory/1516-117-0x0000000000440000-0x000000000047B000-memory.dmp
                    Filesize

                    236KB

                  • memory/1516-116-0x0000000000440000-0x000000000047B000-memory.dmp
                    Filesize

                    236KB

                  • memory/1516-118-0x0000000000440000-0x000000000047B000-memory.dmp
                    Filesize

                    236KB

                  • memory/1516-119-0x0000000000440000-0x000000000047B000-memory.dmp
                    Filesize

                    236KB

                  • memory/1588-120-0x0000000000400000-0x000000000043B000-memory.dmp
                    Filesize

                    236KB

                  • memory/1588-90-0x0000000000400000-0x000000000043B000-memory.dmp
                    Filesize

                    236KB

                  • memory/1588-82-0x000000000042B055-mapping.dmp
                  • memory/1828-86-0x0000000000000000-mapping.dmp
                  • memory/1836-113-0x0000000003A50000-0x0000000003A8B000-memory.dmp
                    Filesize

                    236KB

                  • memory/1836-112-0x0000000003A50000-0x0000000003A8B000-memory.dmp
                    Filesize

                    236KB

                  • memory/1836-111-0x0000000003A50000-0x0000000003A8B000-memory.dmp
                    Filesize

                    236KB

                  • memory/1836-110-0x0000000003A50000-0x0000000003A8B000-memory.dmp
                    Filesize

                    236KB

                  • memory/2036-54-0x0000000075591000-0x0000000075593000-memory.dmp
                    Filesize

                    8KB