Analysis

  • max time kernel
    152s
  • max time network
    190s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    08-07-2022 08:24

General

  • Target

    6763427f4f9545f615c4a9a9c92461a0c03a2205e91840e9f836424745e1b352.exe

  • Size

    1.5MB

  • MD5

    88c8dff86057cf7f4d3fb28f8b35ab39

  • SHA1

    9dfa799ac2d6f228e81520fa5103f3fc1c077bdf

  • SHA256

    6763427f4f9545f615c4a9a9c92461a0c03a2205e91840e9f836424745e1b352

  • SHA512

    6f74304a2b5b754ccfa55968cd5c1e798c34861cca067e23629da19cd61a68a43c3e918b6f46158a78d3a1c49d6b2260a2ace4d359d199543948b6aadc857c6c

Malware Config

Signatures

  • Modifies WinLogon for persistence 2 TTPs 1 IoCs
  • RevcodeRat, WebMonitorRat

    WebMonitor is a remote access tool that you can use from any browser access to control, and monitor your phones, or PCs.

  • WebMonitor payload 4 IoCs
  • Executes dropped EXE 2 IoCs
  • UPX packed file 18 IoCs

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

  • Loads dropped DLL 8 IoCs
  • Unexpected DNS network traffic destination 5 IoCs

    Network traffic to other servers than the configured DNS servers was detected on the DNS port.

  • Suspicious use of SetThreadContext 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 33 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\6763427f4f9545f615c4a9a9c92461a0c03a2205e91840e9f836424745e1b352.exe
    "C:\Users\Admin\AppData\Local\Temp\6763427f4f9545f615c4a9a9c92461a0c03a2205e91840e9f836424745e1b352.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of SetThreadContext
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1480
    • C:\Users\Admin\AppData\Local\Temp\f4-setup.exe
      "C:\Users\Admin\AppData\Local\Temp\f4-setup.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:1792
      • C:\Users\Admin\AppData\Local\Temp\Patch.exe
        Patch.exe /silent
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        PID:436
    • C:\Windows\Microsoft.NET\Framework\v2.0.50727\regasm.exe
      "C:\Windows\Microsoft.NET\Framework\v2.0.50727\regasm.exe"
      2⤵
      • Modifies WinLogon for persistence
      • Suspicious use of SetThreadContext
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:696
      • C:\Windows\Microsoft.NET\Framework\v2.0.50727\AppLaunch.exe
        "C:\Windows\Microsoft.NET\Framework\v2.0.50727\AppLaunch.exe"
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:1248

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\Patch.exe

    Filesize

    78KB

    MD5

    c8ecc6d21f0d96f5adb10ba0fad59327

    SHA1

    63f5f489890b0ea90327a551787120bc71559aed

    SHA256

    e652438962d628a62456c778b1693390423223dd12f5c233e361c5c5273ecec0

    SHA512

    27618145d7fabefae7f2fdd56b9b3d0ea6c624a6d6e833bff52bf2d87210b73536052640b39d3419808d02a7c7829b589292087f154ed494145b54ef1fab621a

  • C:\Users\Admin\AppData\Local\Temp\Patch.exe

    Filesize

    78KB

    MD5

    c8ecc6d21f0d96f5adb10ba0fad59327

    SHA1

    63f5f489890b0ea90327a551787120bc71559aed

    SHA256

    e652438962d628a62456c778b1693390423223dd12f5c233e361c5c5273ecec0

    SHA512

    27618145d7fabefae7f2fdd56b9b3d0ea6c624a6d6e833bff52bf2d87210b73536052640b39d3419808d02a7c7829b589292087f154ed494145b54ef1fab621a

  • C:\Users\Admin\AppData\Local\Temp\f4-setup.exe

    Filesize

    361KB

    MD5

    40142677d0bb0ecaad6f45521581a8e3

    SHA1

    b107dea7dc8ec3d53769484173bf59b24a3a526a

    SHA256

    8592243aeb23282bb68e22aee5f3aa19288d289c554e6318ff92b3bb80fb2e24

    SHA512

    fa0a0e0e13f59f6169ad417842b04aa3fa66376a585995d9d1737fb655c46d44e2183209e1266909568c8f80ae9d6e43368d461f3d40be432f683ba2b7048e59

  • C:\Users\Admin\AppData\Local\Temp\f4-setup.exe

    Filesize

    361KB

    MD5

    40142677d0bb0ecaad6f45521581a8e3

    SHA1

    b107dea7dc8ec3d53769484173bf59b24a3a526a

    SHA256

    8592243aeb23282bb68e22aee5f3aa19288d289c554e6318ff92b3bb80fb2e24

    SHA512

    fa0a0e0e13f59f6169ad417842b04aa3fa66376a585995d9d1737fb655c46d44e2183209e1266909568c8f80ae9d6e43368d461f3d40be432f683ba2b7048e59

  • \Users\Admin\AppData\Local\Temp\Patch.exe

    Filesize

    78KB

    MD5

    c8ecc6d21f0d96f5adb10ba0fad59327

    SHA1

    63f5f489890b0ea90327a551787120bc71559aed

    SHA256

    e652438962d628a62456c778b1693390423223dd12f5c233e361c5c5273ecec0

    SHA512

    27618145d7fabefae7f2fdd56b9b3d0ea6c624a6d6e833bff52bf2d87210b73536052640b39d3419808d02a7c7829b589292087f154ed494145b54ef1fab621a

  • \Users\Admin\AppData\Local\Temp\Patch.exe

    Filesize

    78KB

    MD5

    c8ecc6d21f0d96f5adb10ba0fad59327

    SHA1

    63f5f489890b0ea90327a551787120bc71559aed

    SHA256

    e652438962d628a62456c778b1693390423223dd12f5c233e361c5c5273ecec0

    SHA512

    27618145d7fabefae7f2fdd56b9b3d0ea6c624a6d6e833bff52bf2d87210b73536052640b39d3419808d02a7c7829b589292087f154ed494145b54ef1fab621a

  • \Users\Admin\AppData\Local\Temp\Patch.exe

    Filesize

    78KB

    MD5

    c8ecc6d21f0d96f5adb10ba0fad59327

    SHA1

    63f5f489890b0ea90327a551787120bc71559aed

    SHA256

    e652438962d628a62456c778b1693390423223dd12f5c233e361c5c5273ecec0

    SHA512

    27618145d7fabefae7f2fdd56b9b3d0ea6c624a6d6e833bff52bf2d87210b73536052640b39d3419808d02a7c7829b589292087f154ed494145b54ef1fab621a

  • \Users\Admin\AppData\Local\Temp\dup2patcher.dll

    Filesize

    72KB

    MD5

    f6a5ee057facebdbe0f7fcc684408bfe

    SHA1

    2481e7f2051d4563bdb161acc045c4a12054b9e0

    SHA256

    0716d3af51df49db26fa4856fbf219e23d2ae3ffe25272669c8cb5b527fbb6bf

    SHA512

    8153a568ea1f1f954721af33366ae81c00eb9950070004b5e5e2942073be9d6de012fe8233331c9f792f080442d973dd1713823bb6abb0ba0b55af544f6a10a8

  • \Users\Admin\AppData\Local\Temp\f4-setup.exe

    Filesize

    361KB

    MD5

    40142677d0bb0ecaad6f45521581a8e3

    SHA1

    b107dea7dc8ec3d53769484173bf59b24a3a526a

    SHA256

    8592243aeb23282bb68e22aee5f3aa19288d289c554e6318ff92b3bb80fb2e24

    SHA512

    fa0a0e0e13f59f6169ad417842b04aa3fa66376a585995d9d1737fb655c46d44e2183209e1266909568c8f80ae9d6e43368d461f3d40be432f683ba2b7048e59

  • \Users\Admin\AppData\Local\Temp\f4-setup.exe

    Filesize

    361KB

    MD5

    40142677d0bb0ecaad6f45521581a8e3

    SHA1

    b107dea7dc8ec3d53769484173bf59b24a3a526a

    SHA256

    8592243aeb23282bb68e22aee5f3aa19288d289c554e6318ff92b3bb80fb2e24

    SHA512

    fa0a0e0e13f59f6169ad417842b04aa3fa66376a585995d9d1737fb655c46d44e2183209e1266909568c8f80ae9d6e43368d461f3d40be432f683ba2b7048e59

  • \Users\Admin\AppData\Local\Temp\f4-setup.exe

    Filesize

    361KB

    MD5

    40142677d0bb0ecaad6f45521581a8e3

    SHA1

    b107dea7dc8ec3d53769484173bf59b24a3a526a

    SHA256

    8592243aeb23282bb68e22aee5f3aa19288d289c554e6318ff92b3bb80fb2e24

    SHA512

    fa0a0e0e13f59f6169ad417842b04aa3fa66376a585995d9d1737fb655c46d44e2183209e1266909568c8f80ae9d6e43368d461f3d40be432f683ba2b7048e59

  • \Users\Admin\AppData\Local\Temp\f4-setup.exe

    Filesize

    361KB

    MD5

    40142677d0bb0ecaad6f45521581a8e3

    SHA1

    b107dea7dc8ec3d53769484173bf59b24a3a526a

    SHA256

    8592243aeb23282bb68e22aee5f3aa19288d289c554e6318ff92b3bb80fb2e24

    SHA512

    fa0a0e0e13f59f6169ad417842b04aa3fa66376a585995d9d1737fb655c46d44e2183209e1266909568c8f80ae9d6e43368d461f3d40be432f683ba2b7048e59

  • memory/436-110-0x0000000000000000-mapping.dmp

  • memory/696-125-0x00000000739F0000-0x0000000073F9B000-memory.dmp

    Filesize

    5.7MB

  • memory/696-117-0x00000000004CDDAE-mapping.dmp

  • memory/696-124-0x00000000003A6000-0x00000000003B7000-memory.dmp

    Filesize

    68KB

  • memory/696-121-0x00000000739F0000-0x0000000073F9B000-memory.dmp

    Filesize

    5.7MB

  • memory/696-120-0x0000000000400000-0x00000000004D7000-memory.dmp

    Filesize

    860KB

  • memory/1248-131-0x00000000005F5A70-mapping.dmp

  • memory/1248-127-0x0000000000400000-0x00000000005F7000-memory.dmp

    Filesize

    2.0MB

  • memory/1248-129-0x0000000000400000-0x00000000005F7000-memory.dmp

    Filesize

    2.0MB

  • memory/1248-130-0x0000000000400000-0x00000000005F7000-memory.dmp

    Filesize

    2.0MB

  • memory/1248-126-0x0000000000400000-0x00000000005F7000-memory.dmp

    Filesize

    2.0MB

  • memory/1248-133-0x0000000000400000-0x00000000005F7000-memory.dmp

    Filesize

    2.0MB

  • memory/1248-132-0x0000000000400000-0x00000000005F7000-memory.dmp

    Filesize

    2.0MB

  • memory/1248-136-0x0000000000400000-0x00000000005F7000-memory.dmp

    Filesize

    2.0MB

  • memory/1248-137-0x0000000000400000-0x00000000005F7000-memory.dmp

    Filesize

    2.0MB

  • memory/1248-138-0x0000000000400000-0x00000000005F7000-memory.dmp

    Filesize

    2.0MB

  • memory/1248-139-0x0000000002A60000-0x0000000003A60000-memory.dmp

    Filesize

    16.0MB

  • memory/1248-140-0x0000000000400000-0x00000000005F7000-memory.dmp

    Filesize

    2.0MB

  • memory/1248-141-0x0000000002A60000-0x0000000003A60000-memory.dmp

    Filesize

    16.0MB

  • memory/1480-97-0x00000000006D3000-0x000000000072E000-memory.dmp

    Filesize

    364KB

  • memory/1480-91-0x0000000074F91000-0x0000000074F93000-memory.dmp

    Filesize

    8KB

  • memory/1480-89-0x00000000006BE000-0x00000000006C3000-memory.dmp

    Filesize

    20KB

  • memory/1480-95-0x00000000006D3000-0x000000000072E000-memory.dmp

    Filesize

    364KB

  • memory/1480-99-0x00000000006D3000-0x000000000072E000-memory.dmp

    Filesize

    364KB

  • memory/1480-100-0x0000000002D90000-0x0000000002EC7000-memory.dmp

    Filesize

    1.2MB

  • memory/1480-104-0x00000000006D3000-0x000000000072E000-memory.dmp

    Filesize

    364KB

  • memory/1480-105-0x00000000006D3000-0x000000000072E000-memory.dmp

    Filesize

    364KB

  • memory/1480-102-0x00000000006D3000-0x000000000072E000-memory.dmp

    Filesize

    364KB

  • memory/1480-119-0x00000000008C0000-0x00000000008C8000-memory.dmp

    Filesize

    32KB

  • memory/1480-72-0x00000000006C8000-0x00000000006CB000-memory.dmp

    Filesize

    12KB

  • memory/1480-65-0x00000000006C8000-0x00000000006CB000-memory.dmp

    Filesize

    12KB

  • memory/1480-71-0x00000000006C8000-0x00000000006CB000-memory.dmp

    Filesize

    12KB

  • memory/1480-74-0x00000000006C8000-0x00000000006CB000-memory.dmp

    Filesize

    12KB

  • memory/1480-69-0x00000000006C8000-0x00000000006CB000-memory.dmp

    Filesize

    12KB

  • memory/1480-83-0x00000000006BE000-0x00000000006C3000-memory.dmp

    Filesize

    20KB

  • memory/1480-92-0x00000000006BE000-0x00000000006C3000-memory.dmp

    Filesize

    20KB

  • memory/1480-80-0x00000000006BE000-0x00000000006C3000-memory.dmp

    Filesize

    20KB

  • memory/1480-56-0x00000000006C8000-0x00000000006CB000-memory.dmp

    Filesize

    12KB

  • memory/1480-57-0x00000000006C8000-0x00000000006CB000-memory.dmp

    Filesize

    12KB

  • memory/1480-59-0x00000000006C8000-0x00000000006CB000-memory.dmp

    Filesize

    12KB

  • memory/1480-62-0x00000000006C8000-0x00000000006CB000-memory.dmp

    Filesize

    12KB

  • memory/1480-63-0x00000000006C8000-0x00000000006CB000-memory.dmp

    Filesize

    12KB

  • memory/1480-77-0x00000000006BE000-0x00000000006C3000-memory.dmp

    Filesize

    20KB

  • memory/1480-68-0x00000000006C8000-0x00000000006CB000-memory.dmp

    Filesize

    12KB

  • memory/1792-94-0x0000000000000000-mapping.dmp

  • memory/1792-123-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1792-122-0x0000000000540000-0x0000000000677000-memory.dmp

    Filesize

    1.2MB

  • memory/1792-103-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB