Analysis

  • max time kernel
    96s
  • max time network
    120s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    06/12/2024, 02:10

General

  • Target

    b35dc58b3ec34a86831ec82f925d71075d863a0c83646782650f099f2ca91d79.dll

  • Size

    377KB

  • MD5

    81dd5b8555731f2645abb1f48926708b

  • SHA1

    27506c56c1dc6a10bef749929618af998bd7f45b

  • SHA256

    b35dc58b3ec34a86831ec82f925d71075d863a0c83646782650f099f2ca91d79

  • SHA512

    24f6f483c226f0a5c86772d06b5b3f81ad71e2ffe3d2119a61c0da37f100677689235f4b39848c197c1a4c159b2d46088edf02b53862ebc5a945c15823375c64

  • SSDEEP

    6144:uxGMku94XCzTurXzURlbDC9K69u2m+SqOWcsQQKiY4leDDGoggH/VREG6j4Gm01n:uxGCOXzURlbDC9K69u2m+SqOWcsQQKi/

Malware Config

Extracted

Family

sality

C2

http://89.119.67.154/testo5/

http://kukutrustnet777.info/home.gif

http://kukutrustnet888.info/home.gif

http://kukutrustnet987.info/home.gif

http://www.klkjwre9fqwieluoi.info/

http://kukutrustnet777888.info/

Signatures

  • Modifies firewall policy service 3 TTPs 3 IoCs
  • Ramnit

    Ramnit is a versatile family that holds viruses, worms, and Trojans.

  • Ramnit family
  • Sality

    Sality is backdoor written in C++, first discovered in 2003.

  • Sality family
  • UAC bypass 3 TTPs 1 IoCs
  • Windows security bypass 2 TTPs 6 IoCs
  • Executes dropped EXE 2 IoCs
  • Windows security modification 2 TTPs 7 IoCs
  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Drops file in System32 directory 1 IoCs
  • UPX packed file 16 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Drops file in Program Files directory 3 IoCs
  • Drops file in Windows directory 1 IoCs
  • Program crash 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Modifies Internet Explorer settings 1 TTPs 33 IoCs
  • Suspicious behavior: EnumeratesProcesses 18 IoCs
  • Suspicious use of AdjustPrivilegeToken 44 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SetWindowsHookEx 6 IoCs
  • Suspicious use of UnmapMainImage 2 IoCs
  • Suspicious use of WriteProcessMemory 28 IoCs
  • System policy modification 1 TTPs 1 IoCs

Processes

  • C:\Windows\system32\fontdrvhost.exe
    "fontdrvhost.exe"
    1⤵
      PID:788
    • C:\Windows\system32\fontdrvhost.exe
      "fontdrvhost.exe"
      1⤵
        PID:796
      • C:\Windows\system32\dwm.exe
        "dwm.exe"
        1⤵
          PID:392
        • C:\Windows\system32\rundll32.exe
          rundll32.exe C:\Users\Admin\AppData\Local\Temp\b35dc58b3ec34a86831ec82f925d71075d863a0c83646782650f099f2ca91d79.dll,#1
          1⤵
          • Suspicious use of WriteProcessMemory
          PID:3192
          • C:\Windows\SysWOW64\rundll32.exe
            rundll32.exe C:\Users\Admin\AppData\Local\Temp\b35dc58b3ec34a86831ec82f925d71075d863a0c83646782650f099f2ca91d79.dll,#1
            2⤵
            • Drops file in System32 directory
            • System Location Discovery: System Language Discovery
            • Suspicious use of WriteProcessMemory
            PID:2496
            • C:\Windows\SysWOW64\rundll32mgr.exe
              C:\Windows\SysWOW64\rundll32mgr.exe
              3⤵
              • Modifies firewall policy service
              • UAC bypass
              • Windows security bypass
              • Executes dropped EXE
              • Windows security modification
              • Checks whether UAC is enabled
              • Drops file in Program Files directory
              • Drops file in Windows directory
              • System Location Discovery: System Language Discovery
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of AdjustPrivilegeToken
              • Suspicious use of UnmapMainImage
              • Suspicious use of WriteProcessMemory
              • System policy modification
              PID:4508
              • C:\Program Files (x86)\Microsoft\WaterMark.exe
                "C:\Program Files (x86)\Microsoft\WaterMark.exe"
                4⤵
                • Executes dropped EXE
                • System Location Discovery: System Language Discovery
                • Suspicious behavior: EnumeratesProcesses
                • Suspicious use of AdjustPrivilegeToken
                • Suspicious use of UnmapMainImage
                • Suspicious use of WriteProcessMemory
                PID:3520
                • C:\Windows\SysWOW64\svchost.exe
                  C:\Windows\system32\svchost.exe
                  5⤵
                    PID:232
                  • C:\Program Files\Internet Explorer\iexplore.exe
                    "C:\Program Files\Internet Explorer\iexplore.exe"
                    5⤵
                    • Modifies Internet Explorer settings
                    • Suspicious use of FindShellTrayWindow
                    • Suspicious use of SetWindowsHookEx
                    • Suspicious use of WriteProcessMemory
                    PID:3596
                    • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
                      "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:3596 CREDAT:17410 /prefetch:2
                      6⤵
                      • System Location Discovery: System Language Discovery
                      • Modifies Internet Explorer settings
                      • Suspicious use of SetWindowsHookEx
                      PID:4804
                  • C:\Program Files\Internet Explorer\iexplore.exe
                    "C:\Program Files\Internet Explorer\iexplore.exe"
                    5⤵
                    • Modifies Internet Explorer settings
                    PID:2116
              • C:\Windows\SysWOW64\WerFault.exe
                C:\Windows\SysWOW64\WerFault.exe -u -p 2496 -s 628
                3⤵
                • Program crash
                PID:2964
          • C:\Windows\SysWOW64\WerFault.exe
            C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2496 -ip 2496
            1⤵
              PID:3604

            Network

            MITRE ATT&CK Enterprise v15

            Replay Monitor

            Loading Replay Monitor...

            Downloads

            • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776

              Filesize

              471B

              MD5

              8ccf65b127d0608732734b96b79d8a12

              SHA1

              f50e2ff848a61949c79f1bca80fa174dc04e448e

              SHA256

              761614367687e75bf56abe14b096a9dc92f4eea785bb07077e521d8047396453

              SHA512

              89de5a300af7dd2204f11a2a1f86787b2778bc33e9a601d889736063e37bdf8b81e7a32c4ec2aaae4e7a18ce5814c72fb0e2857bb76c08ec24a0917864584f34

            • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776

              Filesize

              404B

              MD5

              e6c247e72ed217aa1aac07dcdf89958a

              SHA1

              f89a346fe538dfdedad5b986067bba998adf74dc

              SHA256

              32595d64e50015fe2ad6b674522581c7e858f832289c3c5ef7f00629174977e4

              SHA512

              437bc4fa0dcd6113aac58f1cb3921e79ec506365448a58d4ccd66c7384159ba1eea9fcfdc2c0afdcb948790ca5ea966e16be156b54981527404d340789d7ef83

            • C:\Users\Admin\AppData\Local\Microsoft\Internet Explorer\VersionManager\ver9EE.tmp

              Filesize

              15KB

              MD5

              1a545d0052b581fbb2ab4c52133846bc

              SHA1

              62f3266a9b9925cd6d98658b92adec673cbe3dd3

              SHA256

              557472aeaebf4c1c800b9df14c190f66d62cbabb011300dbedde2dcddd27a6c1

              SHA512

              bd326d111589d87cd6d019378ec725ac9ac7ad4c36f22453941f7d52f90b747ede4783a83dfff6cae1b3bb46690ad49cffa77f2afda019b22863ac485b406e8d

            • C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\9MFSIIMR\suggestions[1].en-US

              Filesize

              17KB

              MD5

              5a34cb996293fde2cb7a4ac89587393a

              SHA1

              3c96c993500690d1a77873cd62bc639b3a10653f

              SHA256

              c6a5377cbc07eece33790cfc70572e12c7a48ad8296be25c0cc805a1f384dbad

              SHA512

              e1b7d0107733f81937415104e70f68b1be6fd0ca65dccf4ff72637943d44278d3a77f704aedff59d2dbc0d56a609b2590c8ec0dd6bc48ab30f1dad0c07a0a3ee

            • C:\Windows\SysWOW64\rundll32mgr.exe

              Filesize

              164KB

              MD5

              a3b1f1c4cd75bea10095e054f990bf1d

              SHA1

              15bf037b2166d2533e12bbec9f1d5f9a3ad8c81b

              SHA256

              a4c51942f696650a7ce0530a88c3742380ac82bc1ddc75c24d1417f0958caaee

              SHA512

              7457591c9676baa6043e4c3ae6ede364f19964c4e4e6a91a06e148221402791cabf9d5ab2bfcb629120ab136fee0a2994c0830f7cbfb112c5c6b07109b6a1a94

            • memory/2496-0-0x0000000010000000-0x0000000010065000-memory.dmp

              Filesize

              404KB

            • memory/2496-43-0x0000000010000000-0x0000000010065000-memory.dmp

              Filesize

              404KB

            • memory/3520-41-0x0000000077292000-0x0000000077293000-memory.dmp

              Filesize

              4KB

            • memory/3520-46-0x0000000000070000-0x0000000000071000-memory.dmp

              Filesize

              4KB

            • memory/3520-39-0x0000000000060000-0x0000000000061000-memory.dmp

              Filesize

              4KB

            • memory/3520-31-0x0000000000400000-0x0000000000434000-memory.dmp

              Filesize

              208KB

            • memory/3520-47-0x0000000000400000-0x0000000000421000-memory.dmp

              Filesize

              132KB

            • memory/3520-44-0x0000000000400000-0x0000000000434000-memory.dmp

              Filesize

              208KB

            • memory/3520-40-0x0000000000400000-0x0000000000421000-memory.dmp

              Filesize

              132KB

            • memory/3520-45-0x0000000077292000-0x0000000077293000-memory.dmp

              Filesize

              4KB

            • memory/4508-24-0x00000000037A0000-0x000000000482E000-memory.dmp

              Filesize

              16.6MB

            • memory/4508-17-0x0000000000400000-0x0000000000421000-memory.dmp

              Filesize

              132KB

            • memory/4508-13-0x0000000000400000-0x0000000000421000-memory.dmp

              Filesize

              132KB

            • memory/4508-12-0x0000000000400000-0x0000000000421000-memory.dmp

              Filesize

              132KB

            • memory/4508-10-0x0000000000400000-0x0000000000421000-memory.dmp

              Filesize

              132KB

            • memory/4508-11-0x0000000000400000-0x0000000000421000-memory.dmp

              Filesize

              132KB

            • memory/4508-16-0x00000000037A0000-0x000000000482E000-memory.dmp

              Filesize

              16.6MB

            • memory/4508-9-0x00000000037A0000-0x000000000482E000-memory.dmp

              Filesize

              16.6MB

            • memory/4508-18-0x0000000000400000-0x0000000000421000-memory.dmp

              Filesize

              132KB

            • memory/4508-26-0x0000000000400000-0x0000000000421000-memory.dmp

              Filesize

              132KB

            • memory/4508-27-0x0000000000850000-0x0000000000851000-memory.dmp

              Filesize

              4KB

            • memory/4508-8-0x00000000037A0000-0x000000000482E000-memory.dmp

              Filesize

              16.6MB

            • memory/4508-22-0x00000000037A0000-0x000000000482E000-memory.dmp

              Filesize

              16.6MB

            • memory/4508-15-0x00000000037A0000-0x000000000482E000-memory.dmp

              Filesize

              16.6MB

            • memory/4508-4-0x0000000000400000-0x0000000000434000-memory.dmp

              Filesize

              208KB