Analysis

  • max time kernel
    151s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23-11-2022 09:54

General

  • Target

    41707206bb6ac790542519a9cad6a438c71e5b1e3eeef5f95f99f7cd19126d9f.exe

  • Size

    296KB

  • MD5

    3d7a5b83b6c8fdd5df34cbb0d23483de

  • SHA1

    e774dc8e30008338844f096c6ade70e2c092052d

  • SHA256

    41707206bb6ac790542519a9cad6a438c71e5b1e3eeef5f95f99f7cd19126d9f

  • SHA512

    804a888abd4982913cc1c1e1585040fb6be47c1ca37b5be9eb6c52d6c419c038dfaf18f670e1fa942f2f316fac49e4e613beb39a4a54d21d6df7371bb5947182

  • SSDEEP

    6144:Nnh4rMUW2f5mn4cwBPQD4od7FwDvKbrAGeGYiRqVVc67HJz:zf1o2faKbrAGeuRqVCqF

Score
10/10

Malware Config

Signatures

  • Modifies firewall policy service 2 TTPs 10 IoCs
  • Executes dropped EXE 2 IoCs
  • Checks computer location settings 2 TTPs 2 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Uses the VBS compiler for execution 1 TTPs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Drops desktop.ini file(s) 2 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Drops file in Windows directory 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies registry key 1 TTPs 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 38 IoCs
  • Suspicious use of SetWindowsHookEx 8 IoCs
  • Suspicious use of WriteProcessMemory 38 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\41707206bb6ac790542519a9cad6a438c71e5b1e3eeef5f95f99f7cd19126d9f.exe
    "C:\Users\Admin\AppData\Local\Temp\41707206bb6ac790542519a9cad6a438c71e5b1e3eeef5f95f99f7cd19126d9f.exe"
    1⤵
    • Checks computer location settings
    • Adds Run key to start application
    • Drops desktop.ini file(s)
    • Suspicious use of SetThreadContext
    • Drops file in Windows directory
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2492
    • C:\Users\Admin\AppData\Local\Temp\tmp7B4F.tmp.exe
      "C:\Users\Admin\AppData\Local\Temp\tmp7B4F.tmp.exe" /pq
      2⤵
      • Executes dropped EXE
      • Checks computer location settings
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:532
      • C:\Users\Admin\AppData\Local\Temp\tmp7B4F.tmp.exe
        "C:\Users\Admin\AppData\Local\Temp\tmp7B4F.tmp.exe" /px
        3⤵
        • Executes dropped EXE
        • Adds Run key to start application
        • Suspicious use of AdjustPrivilegeToken
        PID:4180
    • C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
      "C:\Windows\Microsoft.NET\Framework\v2.0.50727\\vbc.exe"
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:788
      • C:\Windows\SysWOW64\cmd.exe
        cmd /c REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile /v "DoNotAllowExceptions" /t REG_DWORD /d "0" /f
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:5016
        • C:\Windows\SysWOW64\reg.exe
          REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile /v "DoNotAllowExceptions" /t REG_DWORD /d "0" /f
          4⤵
          • Modifies firewall policy service
          • Modifies registry key
          PID:3744
      • C:\Windows\SysWOW64\cmd.exe
        cmd /c REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile /v "DoNotAllowExceptions" /t REG_DWORD /d "0" /f
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:4744
        • C:\Windows\SysWOW64\reg.exe
          REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile /v "DoNotAllowExceptions" /t REG_DWORD /d "0" /f
          4⤵
          • Modifies firewall policy service
          • Modifies registry key
          PID:1504
      • C:\Windows\SysWOW64\cmd.exe
        cmd /c REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List /v "C:\Users\Admin\AppData\Roaming\URFNZWN8PN.exe" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\URFNZWN8PN.exe:*:Enabled:Windows Messanger" /f
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:5032
        • C:\Windows\SysWOW64\reg.exe
          REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List /v "C:\Users\Admin\AppData\Roaming\URFNZWN8PN.exe" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\URFNZWN8PN.exe:*:Enabled:Windows Messanger" /f
          4⤵
          • Modifies firewall policy service
          • Modifies registry key
          PID:1508
      • C:\Windows\SysWOW64\cmd.exe
        cmd /c REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List /v "C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe" /t REG_SZ /d "C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe:*:Enabled:Windows Messanger" /f
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:4820
        • C:\Windows\SysWOW64\reg.exe
          REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List /v "C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe" /t REG_SZ /d "C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe:*:Enabled:Windows Messanger" /f
          4⤵
          • Modifies firewall policy service
          • Modifies registry key
          PID:5048

Network

MITRE ATT&CK Matrix ATT&CK v6

Execution

Scripting

1
T1064

Persistence

Modify Existing Service

1
T1031

Registry Run Keys / Startup Folder

1
T1060

Defense Evasion

Modify Registry

3
T1112

Scripting

1
T1064

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v2.0_32\UsageLogs\tmp7B4F.tmp.exe.log
    Filesize

    400B

    MD5

    0a9b4592cd49c3c21f6767c2dabda92f

    SHA1

    f534297527ae5ccc0ecb2221ddeb8e58daeb8b74

    SHA256

    c7effe9cb81a70d738dee863991afefab040290d4c4b78b4202383bcb9f88fcd

    SHA512

    6b878df474e5bbfb8e9e265f15a76560c2ef151dcebc6388c82d7f6f86ffaf83f5ade5a09f1842e493cb6c8fd63b0b88d088c728fd725f7139f965a5ee332307

  • C:\Users\Admin\AppData\Local\Temp\tmp7B4F.tmp.exe
    Filesize

    296KB

    MD5

    3d7a5b83b6c8fdd5df34cbb0d23483de

    SHA1

    e774dc8e30008338844f096c6ade70e2c092052d

    SHA256

    41707206bb6ac790542519a9cad6a438c71e5b1e3eeef5f95f99f7cd19126d9f

    SHA512

    804a888abd4982913cc1c1e1585040fb6be47c1ca37b5be9eb6c52d6c419c038dfaf18f670e1fa942f2f316fac49e4e613beb39a4a54d21d6df7371bb5947182

  • C:\Users\Admin\AppData\Local\Temp\tmp7B4F.tmp.exe
    Filesize

    296KB

    MD5

    3d7a5b83b6c8fdd5df34cbb0d23483de

    SHA1

    e774dc8e30008338844f096c6ade70e2c092052d

    SHA256

    41707206bb6ac790542519a9cad6a438c71e5b1e3eeef5f95f99f7cd19126d9f

    SHA512

    804a888abd4982913cc1c1e1585040fb6be47c1ca37b5be9eb6c52d6c419c038dfaf18f670e1fa942f2f316fac49e4e613beb39a4a54d21d6df7371bb5947182

  • C:\Users\Admin\AppData\Local\Temp\tmp7B4F.tmp.exe
    Filesize

    296KB

    MD5

    3d7a5b83b6c8fdd5df34cbb0d23483de

    SHA1

    e774dc8e30008338844f096c6ade70e2c092052d

    SHA256

    41707206bb6ac790542519a9cad6a438c71e5b1e3eeef5f95f99f7cd19126d9f

    SHA512

    804a888abd4982913cc1c1e1585040fb6be47c1ca37b5be9eb6c52d6c419c038dfaf18f670e1fa942f2f316fac49e4e613beb39a4a54d21d6df7371bb5947182

  • memory/532-133-0x0000000000000000-mapping.dmp
  • memory/532-136-0x00000000745F0000-0x0000000074BA1000-memory.dmp
    Filesize

    5.7MB

  • memory/532-140-0x00000000745F0000-0x0000000074BA1000-memory.dmp
    Filesize

    5.7MB

  • memory/788-146-0x0000000000400000-0x0000000000479000-memory.dmp
    Filesize

    484KB

  • memory/788-141-0x0000000000000000-mapping.dmp
  • memory/788-142-0x0000000000400000-0x0000000000479000-memory.dmp
    Filesize

    484KB

  • memory/788-144-0x0000000000400000-0x0000000000479000-memory.dmp
    Filesize

    484KB

  • memory/1504-156-0x0000000000000000-mapping.dmp
  • memory/1508-157-0x0000000000000000-mapping.dmp
  • memory/2492-132-0x00000000745F0000-0x0000000074BA1000-memory.dmp
    Filesize

    5.7MB

  • memory/2492-160-0x00000000745F0000-0x0000000074BA1000-memory.dmp
    Filesize

    5.7MB

  • memory/3744-158-0x0000000000000000-mapping.dmp
  • memory/4180-155-0x00000000745F0000-0x0000000074BA1000-memory.dmp
    Filesize

    5.7MB

  • memory/4180-137-0x0000000000000000-mapping.dmp
  • memory/4180-149-0x00000000745F0000-0x0000000074BA1000-memory.dmp
    Filesize

    5.7MB

  • memory/4744-153-0x0000000000000000-mapping.dmp
  • memory/4820-152-0x0000000000000000-mapping.dmp
  • memory/5016-151-0x0000000000000000-mapping.dmp
  • memory/5032-154-0x0000000000000000-mapping.dmp
  • memory/5048-159-0x0000000000000000-mapping.dmp