Analysis

  • max time kernel
    94s
  • max time network
    115s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    09/11/2024, 20:05

General

  • Target
    0ca3c298786daa93f170f92c00481d407ae7b73bcf853c6e2164e4589536f6b8N.dll
  • Size 310KB
  • Sample241109-yt22ea1emb
  • SHA256 0ca3c298786daa93f170f92c00481d407ae7b73bcf853c6e2164e4589536f6b8
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • Ramnit

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

  • Ramnit family
  • Executes dropped EXE 2 IoCs
  • Drops file in System32 directory 1 IoCs
  • UPX packed file 12 IoCs

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

  • Drops file in Program Files directory 3 IoCs
  • Program crash 2 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 16 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SetWindowsHookEx 6 IoCs
  • Suspicious use of UnmapMainImage 2 IoCs
  • Suspicious use of WriteProcessMemory 25 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\0ca3c298786daa93f170f92c00481d407ae7b73bcf853c6e2164e4589536f6b8N.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4536
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\0ca3c298786daa93f170f92c00481d407ae7b73bcf853c6e2164e4589536f6b8N.dll,#1
      2⤵
      • Drops file in System32 directory
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:4840
      • C:\Windows\SysWOW64\rundll32mgr.exe
        C:\Windows\SysWOW64\rundll32mgr.exe
        3⤵
        • Executes dropped EXE
        • Drops file in Program Files directory
        • System Location Discovery: System Language Discovery
        • Suspicious use of UnmapMainImage
        • Suspicious use of WriteProcessMemory
        PID:224
        • 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:4576
          • C:\Windows\SysWOW64\svchost.exe
            C:\Windows\system32\svchost.exe
            5⤵
              PID:5028
              • C:\Windows\SysWOW64\WerFault.exe
                C:\Windows\SysWOW64\WerFault.exe -u -p 5028 -s 204
                6⤵
                • Program crash
                PID:3564
            • 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:4040
              • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
                "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:4040 CREDAT:17410 /prefetch:2
                6⤵
                • System Location Discovery: System Language Discovery
                • Modifies Internet Explorer settings
                • Suspicious use of SetWindowsHookEx
                PID:4868
            • C:\Program Files\Internet Explorer\iexplore.exe
              "C:\Program Files\Internet Explorer\iexplore.exe"
              5⤵
              • Modifies Internet Explorer settings
              PID:2140
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 4840 -s 608
          3⤵
          • Program crash
          PID:1664
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4840 -ip 4840
      1⤵
        PID:4416
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 5028 -ip 5028
        1⤵
          PID:32

        Network

              MITRE ATT&CK Enterprise v15

              Replay Monitor

              Loading Replay Monitor...

              Downloads

              7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776

              • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776
              • Size 471B
              • SHA256 a231a95c194f54c33eef59babf53d979f0342fbc68bc52dbb524887fd378418d
              • MD5 SHA1 SHA512

              7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776

              • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776
              • Size 404B
              • SHA256 87473bb23ea0a4b07455ac3698ef523f4507a2fef96f25cae40a3c50073ab0b3
              • MD5 SHA1 SHA512

              ver2E2F.tmp

              • Path C:\Users\Admin\AppData\Local\Microsoft\Internet Explorer\VersionManager\ver2E2F.tmp
              • Size 15KB
              • SHA256 557472aeaebf4c1c800b9df14c190f66d62cbabb011300dbedde2dcddd27a6c1
              • MD5 SHA1 SHA512 SSDEEP

              suggestions[1].en-US

              • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\9MFSIIMR\suggestions[1].en-US
              • Size 17KB
              • SHA256 c6a5377cbc07eece33790cfc70572e12c7a48ad8296be25c0cc805a1f384dbad
              • MD5 SHA1 SHA512 SSDEEP

              rundll32mgr.exe

              • Path C:\Windows\SysWOW64\rundll32mgr.exe
              • Size 143KB
              • SHA256 be71c16ee9e9ea295cf6f266ddf343c4589843e4288a09f60f9e15923d8f8313
              • MD5 SHA1 SHA512 SSDEEP

              memory/224-10-0x0000000000400000-0x0000000000421000-memory.dmp

              memory/224-14-0x0000000000400000-0x0000000000421000-memory.dmp

              memory/224-13-0x0000000000400000-0x0000000000421000-memory.dmp

              memory/224-12-0x0000000000400000-0x0000000000421000-memory.dmp

              memory/224-4-0x0000000000400000-0x000000000042F000-memory.dmp

              memory/224-11-0x0000000000A40000-0x0000000000A41000-memory.dmp

              memory/224-6-0x0000000000400000-0x0000000000421000-memory.dmp

              memory/224-7-0x0000000000400000-0x0000000000421000-memory.dmp

              memory/224-8-0x0000000000400000-0x0000000000421000-memory.dmp

              memory/4576-21-0x0000000000400000-0x000000000042F000-memory.dmp

              memory/4576-38-0x0000000000070000-0x0000000000071000-memory.dmp

              memory/4576-22-0x0000000000400000-0x000000000042F000-memory.dmp

              memory/4576-29-0x0000000000400000-0x0000000000421000-memory.dmp

              memory/4576-31-0x0000000000060000-0x0000000000061000-memory.dmp

              memory/4576-30-0x0000000000400000-0x0000000000421000-memory.dmp

              memory/4576-37-0x0000000000400000-0x000000000042F000-memory.dmp

              memory/4576-32-0x0000000077162000-0x0000000077163000-memory.dmp

              memory/4576-39-0x0000000077162000-0x0000000077163000-memory.dmp

              memory/4576-40-0x0000000000400000-0x0000000000421000-memory.dmp

              memory/4576-41-0x0000000000400000-0x0000000000421000-memory.dmp

              memory/4840-36-0x0000000010000000-0x0000000010052000-memory.dmp

              memory/4840-1-0x0000000010000000-0x0000000010052000-memory.dmp

              memory/5028-35-0x0000000000750000-0x0000000000751000-memory.dmp

              memory/5028-34-0x0000000000770000-0x0000000000771000-memory.dmp