Analysis

  • max time kernel
    150s
  • max time network
    141s
  • platform
    windows7_x64
  • resource
    win7-20220331-en
  • submitted
    10-04-2022 15:18

General

  • Target

    VIREMENT.exe

  • Size

    244KB

  • MD5

    546ee858992bc35eaf00101cbb261471

  • SHA1

    003d0953cd88b93206b92563779f76df890d31be

  • SHA256

    264709538c4d306bfbf521a73d87b5753f38952b09f597ad405c934139a1082c

  • SHA512

    1f2a8af32136206f8786daf92a7e55653a597cc762e1d8625964f8a84d3d82a12504d4b49047a149478151c83da421e238aff76535f4a180c627c42d271ebe10

Malware Config

Extracted

Family

xloader

Version

2.5

Campaign

cbgo

Decoy

santesha.com

britneysbeautybar.com

sh-cy17.com

jeffcarveragency.com

3117111.com

sobrehosting.net

ddm123.xyz

toxcompliance.com

auditorydesigns.com

vliftfacial.com

ielhii.com

naameliss.com

ritualchariot.com

solchange.com

quatre-vingts.design

lawnmowermashine.com

braceletsstore.net

admappy.com

tollivercoltd.com

vaidix.com

Signatures

  • Xloader

    Xloader is a rebranded version of Formbook malware.

  • suricata: ET MALWARE FormBook CnC Checkin (GET)

    suricata: ET MALWARE FormBook CnC Checkin (GET)

  • Xloader Payload 4 IoCs
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 2 IoCs
  • Suspicious use of SetThreadContext 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 27 IoCs
  • Suspicious behavior: MapViewOfSection 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of SendNotifyMessage 2 IoCs
  • Suspicious use of WriteProcessMemory 19 IoCs

Processes

  • C:\Windows\Explorer.EXE
    C:\Windows\Explorer.EXE
    1⤵
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of WriteProcessMemory
    PID:1224
    • C:\Users\Admin\AppData\Local\Temp\VIREMENT.exe
      "C:\Users\Admin\AppData\Local\Temp\VIREMENT.exe"
      2⤵
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:1396
      • C:\Users\Admin\AppData\Local\Temp\rybhocttcn.exe
        C:\Users\Admin\AppData\Local\Temp\rybhocttcn.exe C:\Users\Admin\AppData\Local\Temp\iuddhrt
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:904
        • C:\Users\Admin\AppData\Local\Temp\rybhocttcn.exe
          C:\Users\Admin\AppData\Local\Temp\rybhocttcn.exe C:\Users\Admin\AppData\Local\Temp\iuddhrt
          4⤵
          • Executes dropped EXE
          • Suspicious use of SetThreadContext
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious behavior: MapViewOfSection
          • Suspicious use of AdjustPrivilegeToken
          PID:1360
    • C:\Windows\SysWOW64\autochk.exe
      "C:\Windows\SysWOW64\autochk.exe"
      2⤵
        PID:1272
      • C:\Windows\SysWOW64\cscript.exe
        "C:\Windows\SysWOW64\cscript.exe"
        2⤵
        • Suspicious use of SetThreadContext
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious behavior: MapViewOfSection
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:1248
        • C:\Windows\SysWOW64\cmd.exe
          /c del "C:\Users\Admin\AppData\Local\Temp\rybhocttcn.exe"
          3⤵
            PID:2044

      Network

      MITRE ATT&CK Matrix ATT&CK v6

      Discovery

      System Information Discovery

      1
      T1082

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\Users\Admin\AppData\Local\Temp\9wei4rtongh1k80
        Filesize

        214KB

        MD5

        0660ddb1a12ffd13ed866ac74452867e

        SHA1

        ff8d9d5b97d4a4d7892f0a2deacd4857cf3d5a87

        SHA256

        13e305181e838369cfd34fb44bef4870375799c02f040b0668a194390ad787c5

        SHA512

        56c4697e4ea9cc817d479d34e9f366bd26f67f6c8cbddbf12c6c62afe339c7eb844870d4dc26e7b519626fc2b2d73fb31a7e5a4eb52d4cc2a42a132a49d3f59a

      • C:\Users\Admin\AppData\Local\Temp\iuddhrt
        Filesize

        4KB

        MD5

        96f41ec942e86ad8be144109d2d78c07

        SHA1

        8bf0832913fee0c280e3e1d1c784434e2bf281e1

        SHA256

        c14b2ec24e50483148c1eb42e32a40fe2b3d543082605c1aafbc51437c9a716d

        SHA512

        7e865127473a8a8dbf84d2eb02774f8ac2d4babe61842d61222f2950700ae3d47b3c0bdca4d37ad0bb8a64420b8abbd188f867375afe892136b683c9b4a5173b

      • C:\Users\Admin\AppData\Local\Temp\rybhocttcn.exe
        Filesize

        6KB

        MD5

        48d6b64e066cb9c2af94223327e4f4fa

        SHA1

        ac744bbed52f912a030cbe4ff1820fc3dc59b72c

        SHA256

        d82de44e081d8a084d0d0928c740117a254bbfd62b1a37181ec784776c2b3129

        SHA512

        57e395594da0658ebf09e816a8403ad48dd17450e3c494568f1f6be1e785c26b1ed3899bc84571d725f4637d4bc65907c27af5deb591bbc6ac51424165fd0e3a

      • C:\Users\Admin\AppData\Local\Temp\rybhocttcn.exe
        Filesize

        6KB

        MD5

        48d6b64e066cb9c2af94223327e4f4fa

        SHA1

        ac744bbed52f912a030cbe4ff1820fc3dc59b72c

        SHA256

        d82de44e081d8a084d0d0928c740117a254bbfd62b1a37181ec784776c2b3129

        SHA512

        57e395594da0658ebf09e816a8403ad48dd17450e3c494568f1f6be1e785c26b1ed3899bc84571d725f4637d4bc65907c27af5deb591bbc6ac51424165fd0e3a

      • C:\Users\Admin\AppData\Local\Temp\rybhocttcn.exe
        Filesize

        6KB

        MD5

        48d6b64e066cb9c2af94223327e4f4fa

        SHA1

        ac744bbed52f912a030cbe4ff1820fc3dc59b72c

        SHA256

        d82de44e081d8a084d0d0928c740117a254bbfd62b1a37181ec784776c2b3129

        SHA512

        57e395594da0658ebf09e816a8403ad48dd17450e3c494568f1f6be1e785c26b1ed3899bc84571d725f4637d4bc65907c27af5deb591bbc6ac51424165fd0e3a

      • \Users\Admin\AppData\Local\Temp\rybhocttcn.exe
        Filesize

        6KB

        MD5

        48d6b64e066cb9c2af94223327e4f4fa

        SHA1

        ac744bbed52f912a030cbe4ff1820fc3dc59b72c

        SHA256

        d82de44e081d8a084d0d0928c740117a254bbfd62b1a37181ec784776c2b3129

        SHA512

        57e395594da0658ebf09e816a8403ad48dd17450e3c494568f1f6be1e785c26b1ed3899bc84571d725f4637d4bc65907c27af5deb591bbc6ac51424165fd0e3a

      • \Users\Admin\AppData\Local\Temp\rybhocttcn.exe
        Filesize

        6KB

        MD5

        48d6b64e066cb9c2af94223327e4f4fa

        SHA1

        ac744bbed52f912a030cbe4ff1820fc3dc59b72c

        SHA256

        d82de44e081d8a084d0d0928c740117a254bbfd62b1a37181ec784776c2b3129

        SHA512

        57e395594da0658ebf09e816a8403ad48dd17450e3c494568f1f6be1e785c26b1ed3899bc84571d725f4637d4bc65907c27af5deb591bbc6ac51424165fd0e3a

      • memory/904-56-0x0000000000000000-mapping.dmp
      • memory/1224-77-0x0000000004070000-0x0000000004125000-memory.dmp
        Filesize

        724KB

      • memory/1224-70-0x0000000004BA0000-0x0000000004CBF000-memory.dmp
        Filesize

        1.1MB

      • memory/1248-71-0x0000000000000000-mapping.dmp
      • memory/1248-76-0x0000000002240000-0x00000000022D0000-memory.dmp
        Filesize

        576KB

      • memory/1248-74-0x00000000000B0000-0x00000000000D9000-memory.dmp
        Filesize

        164KB

      • memory/1248-75-0x0000000001F30000-0x0000000002233000-memory.dmp
        Filesize

        3.0MB

      • memory/1248-73-0x00000000006A0000-0x00000000006C2000-memory.dmp
        Filesize

        136KB

      • memory/1360-64-0x000000000041D450-mapping.dmp
      • memory/1360-68-0x0000000000400000-0x0000000000429000-memory.dmp
        Filesize

        164KB

      • memory/1360-69-0x0000000000180000-0x0000000000191000-memory.dmp
        Filesize

        68KB

      • memory/1360-67-0x0000000000A40000-0x0000000000D43000-memory.dmp
        Filesize

        3.0MB

      • memory/1360-63-0x0000000000400000-0x0000000000429000-memory.dmp
        Filesize

        164KB

      • memory/1396-54-0x0000000075D11000-0x0000000075D13000-memory.dmp
        Filesize

        8KB

      • memory/2044-72-0x0000000000000000-mapping.dmp