d74e83ed5ab21b5c7d0a980d53c434fc7586f0f99d566b479496d2c723f79ee8

General
Target

d74e83ed5ab21b5c7d0a980d53c434fc7586f0f99d566b479496d2c723f79ee8.exe

Filesize

717KB

Completed

24-09-2021 06:13

Score
10 /10
MD5

32c47ecaa256f8fa0d830e7624bed63e

SHA1

72c70ecb7e62e116b876c21dc37ef018239e97e5

SHA256

d74e83ed5ab21b5c7d0a980d53c434fc7586f0f99d566b479496d2c723f79ee8

Malware Config
Signatures 8

Filter: none

Defense Evasion
Discovery
Persistence
  • njRAT/Bladabindi

    Description

    Widely used RAT written in .NET.

  • Executes dropped EXE
    Chrome.exe

    Reported IOCs

    pidprocess
    984Chrome.exe
  • Modifies Windows Firewall

    Tags

    TTPs

    Modify Existing Service
  • Loads dropped DLL
    d74e83ed5ab21b5c7d0a980d53c434fc7586f0f99d566b479496d2c723f79ee8.exe

    Reported IOCs

    pidprocess
    1380d74e83ed5ab21b5c7d0a980d53c434fc7586f0f99d566b479496d2c723f79ee8.exe
  • Adds Run key to start application
    Chrome.exe

    TTPs

    Registry Run Keys / Startup FolderModify Registry

    Reported IOCs

    descriptioniocprocess
    Set value (str)\REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000\Software\Microsoft\Windows\CurrentVersion\Run\9174f01a6e44cbc9af1239d5bb1d7327 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\Chrome.exe\" .."Chrome.exe
    Set value (str)\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\9174f01a6e44cbc9af1239d5bb1d7327 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\Chrome.exe\" .."Chrome.exe
  • Enumerates physical storage devices

    Description

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

    TTPs

    System Information Discovery
  • Suspicious use of AdjustPrivilegeToken
    Chrome.exe

    Reported IOCs

    descriptionpidprocess
    Token: SeDebugPrivilege984Chrome.exe
    Token: 33984Chrome.exe
    Token: SeIncBasePriorityPrivilege984Chrome.exe
    Token: 33984Chrome.exe
    Token: SeIncBasePriorityPrivilege984Chrome.exe
    Token: 33984Chrome.exe
    Token: SeIncBasePriorityPrivilege984Chrome.exe
    Token: 33984Chrome.exe
    Token: SeIncBasePriorityPrivilege984Chrome.exe
    Token: 33984Chrome.exe
    Token: SeIncBasePriorityPrivilege984Chrome.exe
    Token: 33984Chrome.exe
    Token: SeIncBasePriorityPrivilege984Chrome.exe
    Token: 33984Chrome.exe
    Token: SeIncBasePriorityPrivilege984Chrome.exe
    Token: 33984Chrome.exe
    Token: SeIncBasePriorityPrivilege984Chrome.exe
    Token: 33984Chrome.exe
    Token: SeIncBasePriorityPrivilege984Chrome.exe
    Token: 33984Chrome.exe
    Token: SeIncBasePriorityPrivilege984Chrome.exe
    Token: 33984Chrome.exe
    Token: SeIncBasePriorityPrivilege984Chrome.exe
    Token: 33984Chrome.exe
    Token: SeIncBasePriorityPrivilege984Chrome.exe
    Token: 33984Chrome.exe
    Token: SeIncBasePriorityPrivilege984Chrome.exe
    Token: 33984Chrome.exe
    Token: SeIncBasePriorityPrivilege984Chrome.exe
    Token: 33984Chrome.exe
    Token: SeIncBasePriorityPrivilege984Chrome.exe
    Token: 33984Chrome.exe
    Token: SeIncBasePriorityPrivilege984Chrome.exe
  • Suspicious use of WriteProcessMemory
    d74e83ed5ab21b5c7d0a980d53c434fc7586f0f99d566b479496d2c723f79ee8.exeChrome.exe

    Reported IOCs

    descriptionpidprocesstarget process
    PID 1380 wrote to memory of 9841380d74e83ed5ab21b5c7d0a980d53c434fc7586f0f99d566b479496d2c723f79ee8.exeChrome.exe
    PID 1380 wrote to memory of 9841380d74e83ed5ab21b5c7d0a980d53c434fc7586f0f99d566b479496d2c723f79ee8.exeChrome.exe
    PID 1380 wrote to memory of 9841380d74e83ed5ab21b5c7d0a980d53c434fc7586f0f99d566b479496d2c723f79ee8.exeChrome.exe
    PID 1380 wrote to memory of 9841380d74e83ed5ab21b5c7d0a980d53c434fc7586f0f99d566b479496d2c723f79ee8.exeChrome.exe
    PID 984 wrote to memory of 1692984Chrome.exenetsh.exe
    PID 984 wrote to memory of 1692984Chrome.exenetsh.exe
    PID 984 wrote to memory of 1692984Chrome.exenetsh.exe
    PID 984 wrote to memory of 1692984Chrome.exenetsh.exe
Processes 3
  • C:\Users\Admin\AppData\Local\Temp\d74e83ed5ab21b5c7d0a980d53c434fc7586f0f99d566b479496d2c723f79ee8.exe
    "C:\Users\Admin\AppData\Local\Temp\d74e83ed5ab21b5c7d0a980d53c434fc7586f0f99d566b479496d2c723f79ee8.exe"
    Loads dropped DLL
    Suspicious use of WriteProcessMemory
    PID:1380
    • C:\Users\Admin\AppData\Local\Temp\Chrome.exe
      "C:\Users\Admin\AppData\Local\Temp\Chrome.exe"
      Executes dropped EXE
      Adds Run key to start application
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of WriteProcessMemory
      PID:984
      • C:\Windows\SysWOW64\netsh.exe
        netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\Chrome.exe" "Chrome.exe" ENABLE
        PID:1692
Network
MITRE ATT&CK Matrix
Collection
    Command and Control
      Credential Access
        Defense Evasion
        Execution
          Exfiltration
            Impact
              Initial Access
                Lateral Movement
                  Privilege Escalation
                    Replay Monitor
                    00:00 00:00
                    Downloads
                    • C:\Users\Admin\AppData\Local\Temp\Chrome.exe

                      MD5

                      32c47ecaa256f8fa0d830e7624bed63e

                      SHA1

                      72c70ecb7e62e116b876c21dc37ef018239e97e5

                      SHA256

                      d74e83ed5ab21b5c7d0a980d53c434fc7586f0f99d566b479496d2c723f79ee8

                      SHA512

                      c80389394f5114c4acf4dad003d8668c51a128070011f8df56e86d8bf3fcd8468db11963a490e7a760bfd43b535e1afa2548c93c9d1cf6fbcded81ee824abdc4

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

                      MD5

                      32c47ecaa256f8fa0d830e7624bed63e

                      SHA1

                      72c70ecb7e62e116b876c21dc37ef018239e97e5

                      SHA256

                      d74e83ed5ab21b5c7d0a980d53c434fc7586f0f99d566b479496d2c723f79ee8

                      SHA512

                      c80389394f5114c4acf4dad003d8668c51a128070011f8df56e86d8bf3fcd8468db11963a490e7a760bfd43b535e1afa2548c93c9d1cf6fbcded81ee824abdc4

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

                      MD5

                      32c47ecaa256f8fa0d830e7624bed63e

                      SHA1

                      72c70ecb7e62e116b876c21dc37ef018239e97e5

                      SHA256

                      d74e83ed5ab21b5c7d0a980d53c434fc7586f0f99d566b479496d2c723f79ee8

                      SHA512

                      c80389394f5114c4acf4dad003d8668c51a128070011f8df56e86d8bf3fcd8468db11963a490e7a760bfd43b535e1afa2548c93c9d1cf6fbcded81ee824abdc4

                    • memory/984-61-0x0000000001230000-0x0000000001231000-memory.dmp

                    • memory/984-58-0x0000000000000000-mapping.dmp

                    • memory/984-66-0x0000000006CD0000-0x0000000006CD1000-memory.dmp

                    • memory/1380-56-0x0000000000460000-0x0000000000469000-memory.dmp

                    • memory/1380-54-0x0000000000890000-0x0000000000891000-memory.dmp

                    • memory/1692-64-0x0000000000000000-mapping.dmp

                    • memory/1692-65-0x0000000074C71000-0x0000000074C73000-memory.dmp