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Analysis

  • max time kernel
    120s
  • max time network
    156s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    03/12/2022, 12:17

General

  • Target

    81ecf1e8d5fc1b219decfaf8d374d25dc55665ab99ad3a57984b1eb9e56299bc.exe

  • Size

    326KB

  • MD5

    834352e9f4dc7be5490f3c537a3c67d8

  • SHA1

    b62006881416e5a622440d707675fccb71ff08d1

  • SHA256

    81ecf1e8d5fc1b219decfaf8d374d25dc55665ab99ad3a57984b1eb9e56299bc

  • SHA512

    cd54336a69d5f5fdd8fc239a2b74fd4b8e3bd687d76b87bf1c729e4c8ec9ab0ce7bb67411aacceeb8aad6d62e4b5418e86533742853edaa992e9ed0ed3688fb9

  • SSDEEP

    6144:G5BJM60rrnM5GDwDxIl3EIofWjcg96M6TgG3uP7Int0aQ7ZVUH0K5s:yq1rnM5VDalcfWjc7Tb33a9VsJ5s

Malware Config

Signatures

  • Ramnit

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

  • Executes dropped EXE 2 IoCs
  • UPX packed file 11 IoCs

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

  • Drops file in Program Files directory 3 IoCs
  • Program crash 1 IoCs
  • Modifies Internet Explorer settings 1 TTPs 43 IoCs
  • Suspicious behavior: EnumeratesProcesses 16 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of SetWindowsHookEx 11 IoCs
  • Suspicious use of UnmapMainImage 2 IoCs
  • Suspicious use of WriteProcessMemory 25 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\81ecf1e8d5fc1b219decfaf8d374d25dc55665ab99ad3a57984b1eb9e56299bc.exe
    "C:\Users\Admin\AppData\Local\Temp\81ecf1e8d5fc1b219decfaf8d374d25dc55665ab99ad3a57984b1eb9e56299bc.exe"
    1⤵
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2556
    • C:\Users\Admin\AppData\Local\Temp\81ecf1e8d5fc1b219decfaf8d374d25dc55665ab99ad3a57984b1eb9e56299bcmgr.exe
      C:\Users\Admin\AppData\Local\Temp\81ecf1e8d5fc1b219decfaf8d374d25dc55665ab99ad3a57984b1eb9e56299bcmgr.exe
      2⤵
      • Executes dropped EXE
      • Drops file in Program Files directory
      • Suspicious use of UnmapMainImage
      • Suspicious use of WriteProcessMemory
      PID:3708
      • C:\Program Files (x86)\Microsoft\WaterMark.exe
        "C:\Program Files (x86)\Microsoft\WaterMark.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of UnmapMainImage
        • Suspicious use of WriteProcessMemory
        PID:1880
        • C:\Windows\SysWOW64\svchost.exe
          C:\Windows\system32\svchost.exe
          4⤵
            PID:4844
            • C:\Windows\SysWOW64\WerFault.exe
              C:\Windows\SysWOW64\WerFault.exe -u -p 4844 -s 204
              5⤵
              • Program crash
              PID:2236
          • C:\Program Files\Internet Explorer\iexplore.exe
            "C:\Program Files\Internet Explorer\iexplore.exe"
            4⤵
            • Modifies Internet Explorer settings
            • Suspicious use of FindShellTrayWindow
            • Suspicious use of SetWindowsHookEx
            • Suspicious use of WriteProcessMemory
            PID:2456
            • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
              "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:2456 CREDAT:17410 /prefetch:2
              5⤵
              • Modifies Internet Explorer settings
              • Suspicious use of SetWindowsHookEx
              PID:3324
          • C:\Program Files\Internet Explorer\iexplore.exe
            "C:\Program Files\Internet Explorer\iexplore.exe"
            4⤵
            • Modifies Internet Explorer settings
            • Suspicious behavior: GetForegroundWindowSpam
            • Suspicious use of FindShellTrayWindow
            • Suspicious use of SetWindowsHookEx
            • Suspicious use of WriteProcessMemory
            PID:2000
            • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
              "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:2000 CREDAT:17410 /prefetch:2
              5⤵
              • Modifies Internet Explorer settings
              • Suspicious use of SetWindowsHookEx
              PID:5072
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 4844 -ip 4844
      1⤵
        PID:5112

      Network

      MITRE ATT&CK Enterprise v6

      Replay Monitor

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      Downloads

      • C:\Program Files (x86)\Microsoft\WaterMark.exe

        Filesize

        102KB

        MD5

        70b04c8c018befad3751d3f4d24d3bcb

        SHA1

        78df84b2b59d909efc9630ff1408f4b4c5392f7d

        SHA256

        90530f86af79995047d051ca4fdbe02456ff4445073fe6f4e0c13e3f97d6ccee

        SHA512

        649f6ba6af342d064981f2e02780ba6d68f204e3b8648685787a5e58e6cbeadec1d13c363c1d19a7136633cde8361f560d89311c6ef6b99dbb2b7c684aef9f06

      • C:\Program Files (x86)\Microsoft\WaterMark.exe

        Filesize

        102KB

        MD5

        70b04c8c018befad3751d3f4d24d3bcb

        SHA1

        78df84b2b59d909efc9630ff1408f4b4c5392f7d

        SHA256

        90530f86af79995047d051ca4fdbe02456ff4445073fe6f4e0c13e3f97d6ccee

        SHA512

        649f6ba6af342d064981f2e02780ba6d68f204e3b8648685787a5e58e6cbeadec1d13c363c1d19a7136633cde8361f560d89311c6ef6b99dbb2b7c684aef9f06

      • C:\Users\Admin\AppData\Local\Microsoft\Internet Explorer\Recovery\High\Active\RecoveryStore.{401B5E67-7570-11ED-89AC-5203DB9D3E0F}.dat

        Filesize

        3KB

        MD5

        2fb288aaa7416ae06f84a93475ec0207

        SHA1

        a46c3a3d15b10139a8bb40128f0992fd5042ea7a

        SHA256

        d13a3136e140c6a797cc0b89c52237a976fd3ad841e95e097e252f97412e9bb1

        SHA512

        9983f4d8ef1e4dbe3f3310e09de178e5f729483a0d93b2e1b342739e60e4674dab448405ebab860d23b8c08fee34f47150821346cbdb47584340c90f9d4fa0d5

      • C:\Users\Admin\AppData\Local\Microsoft\Internet Explorer\Recovery\High\Active\RecoveryStore.{4020213B-7570-11ED-89AC-5203DB9D3E0F}.dat

        Filesize

        5KB

        MD5

        4679859e949c36529800aeec168179e0

        SHA1

        acbb0c18d521f3751eaa1f7b02fd6bb0d237250a

        SHA256

        135382d87a889a6a0458dfa8348261068b5f6935c2850dd17c7ce5b2c009a120

        SHA512

        2a5725868c4bcd36e41277d21d30c5b41fa980e42985651836e3c6dd3c844e6d0783073c520643bb8e2d26f791204c4d9b04efb1b07e12db4e9a96f8277af8cc

      • C:\Users\Admin\AppData\Local\Temp\81ecf1e8d5fc1b219decfaf8d374d25dc55665ab99ad3a57984b1eb9e56299bcmgr.exe

        Filesize

        102KB

        MD5

        70b04c8c018befad3751d3f4d24d3bcb

        SHA1

        78df84b2b59d909efc9630ff1408f4b4c5392f7d

        SHA256

        90530f86af79995047d051ca4fdbe02456ff4445073fe6f4e0c13e3f97d6ccee

        SHA512

        649f6ba6af342d064981f2e02780ba6d68f204e3b8648685787a5e58e6cbeadec1d13c363c1d19a7136633cde8361f560d89311c6ef6b99dbb2b7c684aef9f06

      • C:\Users\Admin\AppData\Local\Temp\81ecf1e8d5fc1b219decfaf8d374d25dc55665ab99ad3a57984b1eb9e56299bcmgr.exe

        Filesize

        102KB

        MD5

        70b04c8c018befad3751d3f4d24d3bcb

        SHA1

        78df84b2b59d909efc9630ff1408f4b4c5392f7d

        SHA256

        90530f86af79995047d051ca4fdbe02456ff4445073fe6f4e0c13e3f97d6ccee

        SHA512

        649f6ba6af342d064981f2e02780ba6d68f204e3b8648685787a5e58e6cbeadec1d13c363c1d19a7136633cde8361f560d89311c6ef6b99dbb2b7c684aef9f06

      • memory/1880-153-0x0000000000400000-0x0000000000424000-memory.dmp

        Filesize

        144KB

      • memory/1880-157-0x0000000000400000-0x0000000000424000-memory.dmp

        Filesize

        144KB

      • memory/1880-160-0x0000000000400000-0x0000000000421000-memory.dmp

        Filesize

        132KB

      • memory/1880-159-0x0000000000400000-0x0000000000424000-memory.dmp

        Filesize

        144KB

      • memory/1880-152-0x0000000000400000-0x0000000000424000-memory.dmp

        Filesize

        144KB

      • memory/1880-158-0x0000000000400000-0x0000000000424000-memory.dmp

        Filesize

        144KB

      • memory/1880-154-0x0000000000400000-0x0000000000424000-memory.dmp

        Filesize

        144KB

      • memory/2556-151-0x0000000000400000-0x000000000048F000-memory.dmp

        Filesize

        572KB

      • memory/3708-138-0x0000000000400000-0x0000000000421000-memory.dmp

        Filesize

        132KB

      • memory/3708-143-0x0000000000400000-0x0000000000421000-memory.dmp

        Filesize

        132KB

      • memory/3708-139-0x0000000000400000-0x0000000000421000-memory.dmp

        Filesize

        132KB