Analysis

  • max time kernel
    161s
  • max time network
    163s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    15/04/2022, 07:11

General

  • Target
    e5dc0f7c371037389b6c91e68a52e4ae.exe
  • Size 267KB
  • Sample220415-hzyceabafq
  • SHA256 dcaa535d842280f32f6ab34ccf45d91f39ea0a3d6a06d66b0fac687a36b6da80
  • MD5 SHA1 SHA512

Malware Config

Extracted

Family
  • smokeloader

Version
  • 2020

C2
  • http://coralee.at/upload/

  • http://ducvietcao.com/upload/

  • http://biz-acc.ru/upload/

  • http://toimap.com/upload/

  • http://bbb7d.com/upload/

  • http://piratia-life.ru/upload/

  • http://curvreport.com/upload/

  • http://viagratos.com/upload/

  • http://mordo.ru/upload/

  • http://pkodev.net/upload/

  • https://oakland-studio.video/search.php

  • https://seattle-university.video/search.php

rc4.i32
rc4.i32
rc4.i32
rc4.i32

Signatures

  • SmokeLoader

    Modular backdoor trojan in use since 2014.

  • Blocklisted process makes network request 2 IoCs
  • Downloads MZ/PE file
  • Executes dropped EXE 2 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 5 IoCs
  • Checks SCSI registry key(s) 3 TTPs 6 IoCs

    SCSI information is often read in order to detect sandboxing environments.

  • Checks processor information in registry 2 TTPs 51 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: MapViewOfSection 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 12 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of WriteProcessMemory 50 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\e5dc0f7c371037389b6c91e68a52e4ae.exe
    "C:\Users\Admin\AppData\Local\Temp\e5dc0f7c371037389b6c91e68a52e4ae.exe"
    1⤵
    • Checks SCSI registry key(s)
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: MapViewOfSection
    PID:896
  • C:\Users\Admin\AppData\Local\Temp\C2F2.exe
    C:\Users\Admin\AppData\Local\Temp\C2F2.exe
    1⤵
    • Executes dropped EXE
    • Checks SCSI registry key(s)
    • Suspicious behavior: MapViewOfSection
    PID:3164
  • C:\Users\Admin\AppData\Local\Temp\60E9.exe
    C:\Users\Admin\AppData\Local\Temp\60E9.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • Checks processor information in registry
    • Suspicious use of WriteProcessMemory
    PID:2372
    • C:\Windows\SysWOW64\rundll32.exe
      "C:\Windows\syswow64\rundll32.exe" "C:\Windows\syswow64\shell32.dll",#61
      2⤵
        PID:4256
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 4256 -s 556
          3⤵
          • Program crash
          PID:4452
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 2372 -s 236
        2⤵
        • Program crash
        PID:3292
      • C:\Windows\SysWOW64\rundll32.exe
        "C:\Windows\syswow64\rundll32.exe" "C:\Windows\syswow64\shell32.dll",#61
        2⤵
        • Blocklisted process makes network request
        PID:8
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 2372 -s 696
        2⤵
        • Program crash
        PID:1372
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 2372 -s 940
        2⤵
        • Program crash
        PID:4532
      • C:\Windows\SysWOW64\rundll32.exe
        "C:\Windows\syswow64\rundll32.exe" "C:\Windows\syswow64\shell32.dll",#61
        2⤵
        • Checks processor information in registry
        • Suspicious use of FindShellTrayWindow
        PID:552
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 2372 -s 952
        2⤵
        • Program crash
        PID:4236
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 2372 -ip 2372
      1⤵
        PID:5040
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -pss -s 192 -p 4256 -ip 4256
        1⤵
          PID:4716
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -pss -s 192 -p 2372 -ip 2372
          1⤵
            PID:5084
          • C:\Windows\SysWOW64\WerFault.exe
            C:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 2372 -ip 2372
            1⤵
              PID:4560
            • C:\Windows\SysWOW64\WerFault.exe
              C:\Windows\SysWOW64\WerFault.exe -pss -s 552 -p 2372 -ip 2372
              1⤵
                PID:4984

              Network

                    MITRE ATT&CK Enterprise v6

                    Replay Monitor

                    Loading Replay Monitor...

                    Downloads

                    60E9.exe

                    • Path C:\Users\Admin\AppData\Local\Temp\60E9.exe
                    • Size 996KB
                    • SHA256 07c52d7502270fdd42ee6e3fada464e83ac207f57f169f51b2a95a756f401940
                    • MD5 SHA1 SHA512 SSDEEP

                    60E9.exe

                    • Path C:\Users\Admin\AppData\Local\Temp\60E9.exe
                    • Size 996KB
                    • SHA256 07c52d7502270fdd42ee6e3fada464e83ac207f57f169f51b2a95a756f401940
                    • MD5 SHA1 SHA512 SSDEEP

                    Aeuuefufseeqi.tmp

                    • Path C:\Users\Admin\AppData\Local\Temp\Aeuuefufseeqi.tmp
                    • Size 3.1MB
                    • SHA256 1aaaa2293fe876a572806439950a1b19f19f5c940ac3c5f5afabe5b4c3439f68
                    • MD5 SHA1 SHA512 SSDEEP

                    C2F2.exe

                    • Path C:\Users\Admin\AppData\Local\Temp\C2F2.exe
                    • Size 1.1MB
                    • SHA256 d28ef22a04e7e8c4bef2fdbc4d16e697c853aec55dabf58ea07097fec9edf3c1
                    • MD5 SHA1 SHA512 SSDEEP

                    C2F2.exe

                    • Path C:\Users\Admin\AppData\Local\Temp\C2F2.exe
                    • Size 1.1MB
                    • SHA256 d28ef22a04e7e8c4bef2fdbc4d16e697c853aec55dabf58ea07097fec9edf3c1
                    • MD5 SHA1 SHA512 SSDEEP

                    memory/8-156-0x0000000000580000-0x0000000000582000-memory.dmp

                    memory/8-157-0x0000000000590000-0x0000000000592000-memory.dmp

                    memory/8-158-0x00000000005A0000-0x00000000005A2000-memory.dmp

                    memory/8-159-0x00000000005B0000-0x00000000005B2000-memory.dmp

                    memory/8-155-0x0000000000570000-0x0000000000572000-memory.dmp

                    memory/8-154-0x0000000000560000-0x0000000000562000-memory.dmp

                    memory/8-160-0x00000000005C0000-0x00000000005C2000-memory.dmp

                    memory/8-161-0x00000000005D0000-0x00000000005D2000-memory.dmp

                    memory/8-153-0x0000000000550000-0x0000000000552000-memory.dmp

                    memory/8-152-0x0000000000540000-0x0000000000542000-memory.dmp

                    memory/8-150-0x0000000000520000-0x0000000000522000-memory.dmp

                    memory/8-151-0x0000000000530000-0x0000000000532000-memory.dmp

                    memory/552-186-0x00000000008F0000-0x000000000120F000-memory.dmp

                    memory/552-185-0x0000000003940000-0x0000000003A80000-memory.dmp

                    memory/552-181-0x0000000003900000-0x0000000003901000-memory.dmp

                    memory/552-182-0x0000000002D00000-0x000000000373E000-memory.dmp

                    memory/552-183-0x00000000040C0000-0x00000000040C1000-memory.dmp

                    memory/552-187-0x0000000002D00000-0x000000000373E000-memory.dmp

                    memory/552-184-0x0000000003940000-0x0000000003A80000-memory.dmp

                    memory/768-140-0x0000000000720000-0x0000000000736000-memory.dmp

                    memory/768-134-0x0000000000590000-0x00000000005A6000-memory.dmp

                    memory/896-130-0x00000000006F2000-0x0000000000703000-memory.dmp

                    memory/896-133-0x0000000000400000-0x000000000046B000-memory.dmp

                    memory/896-132-0x00000000001F0000-0x00000000001F9000-memory.dmp

                    memory/896-131-0x00000000006F2000-0x0000000000703000-memory.dmp

                    memory/2372-144-0x0000000000785000-0x000000000084C000-memory.dmp

                    memory/2372-175-0x0000000003930000-0x0000000003A70000-memory.dmp

                    memory/2372-164-0x0000000002EF0000-0x000000000392E000-memory.dmp

                    memory/2372-165-0x0000000003B90000-0x0000000003B91000-memory.dmp

                    memory/2372-166-0x0000000002EF0000-0x000000000392E000-memory.dmp

                    memory/2372-167-0x0000000002E40000-0x0000000002E41000-memory.dmp

                    memory/2372-168-0x0000000003930000-0x0000000003A70000-memory.dmp

                    memory/2372-169-0x0000000003930000-0x0000000003A70000-memory.dmp

                    memory/2372-170-0x0000000002E60000-0x0000000002E61000-memory.dmp

                    memory/2372-171-0x0000000003930000-0x0000000003A70000-memory.dmp

                    memory/2372-172-0x0000000003930000-0x0000000003A70000-memory.dmp

                    memory/2372-173-0x0000000002EB0000-0x0000000002EB1000-memory.dmp

                    memory/2372-174-0x0000000003930000-0x0000000003A70000-memory.dmp

                    memory/2372-163-0x0000000002EF0000-0x000000000392E000-memory.dmp

                    memory/2372-176-0x0000000003C00000-0x0000000003C01000-memory.dmp

                    memory/2372-177-0x0000000003930000-0x0000000003A70000-memory.dmp

                    memory/2372-178-0x0000000003930000-0x0000000003A70000-memory.dmp

                    memory/2372-145-0x0000000002340000-0x0000000002529000-memory.dmp

                    memory/2372-146-0x0000000000400000-0x00000000005F4000-memory.dmp

                    memory/3164-139-0x00000000017E0000-0x00000000017E9000-memory.dmp

                    memory/3164-138-0x00000000017D0000-0x00000000017DA000-memory.dmp

                    memory/4256-148-0x00000000006A0000-0x00000000006A3000-memory.dmp