Analysis

  • max time kernel
    150s
  • max time network
    151s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    11-01-2021 17:52

General

  • Target

    346c907243ff30e626f16d66fabf0af1.exe

  • Size

    1.3MB

  • MD5

    346c907243ff30e626f16d66fabf0af1

  • SHA1

    27892c130128c844142040643de37e4c7092a715

  • SHA256

    019efe7373d58e57856b8f4757aa1e3a4df202415ea326194ec2a93f04aa2ac8

  • SHA512

    d6622abdb1414641a345ea1e24612d53391848550de270538e0725879ced94ceb9333eeb3804ab2a3938f588257557f1c32a9c068639cc8872d364f16fa0676b

Score
10/10

Malware Config

Extracted

Family

remcos

C2

swryijgrvcsgkopnmcdertvgdswbvmophtfdczxs.ydns.eu:2017

Signatures

  • Remcos

    Remcos is a closed-source remote control and surveillance software.

  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 5 IoCs
  • Adds Run key to start application 2 TTPs 4 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 15 IoCs
  • Suspicious use of SetThreadContext 2 IoCs
  • Program crash 2 IoCs
  • Delays execution with timeout.exe 6 IoCs
  • Suspicious behavior: EnumeratesProcesses 16 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 90 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\346c907243ff30e626f16d66fabf0af1.exe
    "C:\Users\Admin\AppData\Local\Temp\346c907243ff30e626f16d66fabf0af1.exe"
    1⤵
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:748
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c timeout 1
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1068
      • C:\Windows\SysWOW64\timeout.exe
        timeout 1
        3⤵
        • Delays execution with timeout.exe
        PID:1252
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c timeout 1
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1200
      • C:\Windows\SysWOW64\timeout.exe
        timeout 1
        3⤵
        • Delays execution with timeout.exe
        PID:1520
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c timeout 1
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1012
      • C:\Windows\SysWOW64\timeout.exe
        timeout 1
        3⤵
        • Delays execution with timeout.exe
        PID:780
    • C:\Users\Admin\AppData\Local\Temp\346c907243ff30e626f16d66fabf0af1.exe
      "C:\Users\Admin\AppData\Local\Temp\346c907243ff30e626f16d66fabf0af1.exe"
      2⤵
      • Adds Run key to start application
      • Suspicious use of WriteProcessMemory
      PID:540
      • C:\Windows\SysWOW64\WScript.exe
        "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\install.vbs"
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:1164
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\System32\cmd.exe" /c "C:\Users\Admin\AppData\Roaming\vlc.exe"
          4⤵
          • Loads dropped DLL
          • Suspicious use of WriteProcessMemory
          PID:1172
          • C:\Users\Admin\AppData\Roaming\vlc.exe
            C:\Users\Admin\AppData\Roaming\vlc.exe
            5⤵
            • Executes dropped EXE
            • Suspicious use of NtSetInformationThreadHideFromDebugger
            • Suspicious use of SetThreadContext
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of WriteProcessMemory
            PID:1608
            • C:\Windows\SysWOW64\cmd.exe
              "C:\Windows\System32\cmd.exe" /c timeout 1
              6⤵
              • Suspicious use of WriteProcessMemory
              PID:2008
              • C:\Windows\SysWOW64\timeout.exe
                timeout 1
                7⤵
                • Delays execution with timeout.exe
                PID:1512
            • C:\Windows\SysWOW64\cmd.exe
              "C:\Windows\System32\cmd.exe" /c timeout 1
              6⤵
              • Suspicious use of WriteProcessMemory
              PID:1976
              • C:\Windows\SysWOW64\timeout.exe
                timeout 1
                7⤵
                • Delays execution with timeout.exe
                PID:1456
            • C:\Windows\SysWOW64\cmd.exe
              "C:\Windows\System32\cmd.exe" /c timeout 1
              6⤵
                PID:1556
                • C:\Windows\SysWOW64\timeout.exe
                  timeout 1
                  7⤵
                  • Delays execution with timeout.exe
                  PID:1316
              • C:\Users\Admin\AppData\Roaming\vlc.exe
                "C:\Users\Admin\AppData\Roaming\vlc.exe"
                6⤵
                • Executes dropped EXE
                • Adds Run key to start application
                • Suspicious use of SetWindowsHookEx
                PID:420
              • C:\Windows\SysWOW64\WerFault.exe
                C:\Windows\SysWOW64\WerFault.exe -u -p 1608 -s 952
                6⤵
                • Loads dropped DLL
                • Program crash
                • Suspicious behavior: EnumeratesProcesses
                • Suspicious use of AdjustPrivilegeToken
                PID:976
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 748 -s 952
        2⤵
        • Program crash
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious behavior: GetForegroundWindowSpam
        • Suspicious use of AdjustPrivilegeToken
        PID:1356

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Local\Temp\install.vbs

      MD5

      0fd303b21c1a43c6a9078e6f5280ca85

      SHA1

      0db8f1ae34f4e2e72184e337951fde826c0bd26f

      SHA256

      5d8c6cfdf8fc198c4fd279487e5c1620ece89e39781c6337f4cb5e111e606ddc

      SHA512

      be4cdd48940bead0274c7cf08abd9bc75b5db468159cbf883198712d0bb15ad81a069638c628eba62237cfa0a197f845c0d9e1f4727c9608a8d642f7aba38671

    • C:\Users\Admin\AppData\Roaming\vlc.exe

      MD5

      346c907243ff30e626f16d66fabf0af1

      SHA1

      27892c130128c844142040643de37e4c7092a715

      SHA256

      019efe7373d58e57856b8f4757aa1e3a4df202415ea326194ec2a93f04aa2ac8

      SHA512

      d6622abdb1414641a345ea1e24612d53391848550de270538e0725879ced94ceb9333eeb3804ab2a3938f588257557f1c32a9c068639cc8872d364f16fa0676b

    • C:\Users\Admin\AppData\Roaming\vlc.exe

      MD5

      346c907243ff30e626f16d66fabf0af1

      SHA1

      27892c130128c844142040643de37e4c7092a715

      SHA256

      019efe7373d58e57856b8f4757aa1e3a4df202415ea326194ec2a93f04aa2ac8

      SHA512

      d6622abdb1414641a345ea1e24612d53391848550de270538e0725879ced94ceb9333eeb3804ab2a3938f588257557f1c32a9c068639cc8872d364f16fa0676b

    • C:\Users\Admin\AppData\Roaming\vlc.exe

      MD5

      346c907243ff30e626f16d66fabf0af1

      SHA1

      27892c130128c844142040643de37e4c7092a715

      SHA256

      019efe7373d58e57856b8f4757aa1e3a4df202415ea326194ec2a93f04aa2ac8

      SHA512

      d6622abdb1414641a345ea1e24612d53391848550de270538e0725879ced94ceb9333eeb3804ab2a3938f588257557f1c32a9c068639cc8872d364f16fa0676b

    • \Users\Admin\AppData\Roaming\vlc.exe

      MD5

      346c907243ff30e626f16d66fabf0af1

      SHA1

      27892c130128c844142040643de37e4c7092a715

      SHA256

      019efe7373d58e57856b8f4757aa1e3a4df202415ea326194ec2a93f04aa2ac8

      SHA512

      d6622abdb1414641a345ea1e24612d53391848550de270538e0725879ced94ceb9333eeb3804ab2a3938f588257557f1c32a9c068639cc8872d364f16fa0676b

    • \Users\Admin\AppData\Roaming\vlc.exe

      MD5

      346c907243ff30e626f16d66fabf0af1

      SHA1

      27892c130128c844142040643de37e4c7092a715

      SHA256

      019efe7373d58e57856b8f4757aa1e3a4df202415ea326194ec2a93f04aa2ac8

      SHA512

      d6622abdb1414641a345ea1e24612d53391848550de270538e0725879ced94ceb9333eeb3804ab2a3938f588257557f1c32a9c068639cc8872d364f16fa0676b

    • \Users\Admin\AppData\Roaming\vlc.exe

      MD5

      346c907243ff30e626f16d66fabf0af1

      SHA1

      27892c130128c844142040643de37e4c7092a715

      SHA256

      019efe7373d58e57856b8f4757aa1e3a4df202415ea326194ec2a93f04aa2ac8

      SHA512

      d6622abdb1414641a345ea1e24612d53391848550de270538e0725879ced94ceb9333eeb3804ab2a3938f588257557f1c32a9c068639cc8872d364f16fa0676b

    • \Users\Admin\AppData\Roaming\vlc.exe

      MD5

      346c907243ff30e626f16d66fabf0af1

      SHA1

      27892c130128c844142040643de37e4c7092a715

      SHA256

      019efe7373d58e57856b8f4757aa1e3a4df202415ea326194ec2a93f04aa2ac8

      SHA512

      d6622abdb1414641a345ea1e24612d53391848550de270538e0725879ced94ceb9333eeb3804ab2a3938f588257557f1c32a9c068639cc8872d364f16fa0676b

    • \Users\Admin\AppData\Roaming\vlc.exe

      MD5

      346c907243ff30e626f16d66fabf0af1

      SHA1

      27892c130128c844142040643de37e4c7092a715

      SHA256

      019efe7373d58e57856b8f4757aa1e3a4df202415ea326194ec2a93f04aa2ac8

      SHA512

      d6622abdb1414641a345ea1e24612d53391848550de270538e0725879ced94ceb9333eeb3804ab2a3938f588257557f1c32a9c068639cc8872d364f16fa0676b

    • memory/420-39-0x0000000000400000-0x0000000000421000-memory.dmp

      Filesize

      132KB

    • memory/420-37-0x0000000000413FA4-mapping.dmp

    • memory/540-13-0x0000000000413FA4-mapping.dmp

    • memory/540-12-0x0000000000400000-0x0000000000421000-memory.dmp

      Filesize

      132KB

    • memory/540-14-0x0000000000400000-0x0000000000421000-memory.dmp

      Filesize

      132KB

    • memory/748-3-0x0000000000A50000-0x0000000000A51000-memory.dmp

      Filesize

      4KB

    • memory/748-2-0x0000000074090000-0x000000007477E000-memory.dmp

      Filesize

      6.9MB

    • memory/748-5-0x0000000000590000-0x00000000005C0000-memory.dmp

      Filesize

      192KB

    • memory/780-11-0x0000000000000000-mapping.dmp

    • memory/976-40-0x0000000000000000-mapping.dmp

    • memory/976-41-0x0000000001F90000-0x0000000001FA1000-memory.dmp

      Filesize

      68KB

    • memory/1012-10-0x0000000000000000-mapping.dmp

    • memory/1068-6-0x0000000000000000-mapping.dmp

    • memory/1164-16-0x0000000000000000-mapping.dmp

    • memory/1164-20-0x0000000002660000-0x0000000002664000-memory.dmp

      Filesize

      16KB

    • memory/1172-19-0x0000000000000000-mapping.dmp

    • memory/1200-8-0x0000000000000000-mapping.dmp

    • memory/1252-7-0x0000000000000000-mapping.dmp

    • memory/1316-35-0x0000000000000000-mapping.dmp

    • memory/1356-15-0x0000000000000000-mapping.dmp

    • memory/1356-17-0x00000000021A0000-0x00000000021B1000-memory.dmp

      Filesize

      68KB

    • memory/1456-33-0x0000000000000000-mapping.dmp

    • memory/1512-31-0x0000000000000000-mapping.dmp

    • memory/1520-9-0x0000000000000000-mapping.dmp

    • memory/1556-34-0x0000000000000000-mapping.dmp

    • memory/1608-27-0x0000000000850000-0x0000000000851000-memory.dmp

      Filesize

      4KB

    • memory/1608-26-0x0000000074090000-0x000000007477E000-memory.dmp

      Filesize

      6.9MB

    • memory/1608-24-0x0000000000000000-mapping.dmp

    • memory/1976-32-0x0000000000000000-mapping.dmp

    • memory/2008-30-0x0000000000000000-mapping.dmp