Analysis

  • max time kernel
    41s
  • max time network
    154s
  • platform
    windows7_x64
  • resource
    win7v20210408
  • submitted
    30/08/2021, 03:32

General

  • Target
    89DAC1423E1281902DFA3501FED124B1.exe
  • Size 2.7MB
  • Sample210830-e3plsfvk5a
  • SHA256 4bb9bb8442b8bb68a5ebffb308c5d2f2212fa33b04a0f4de87dbf7ca1487dc1b
  • MD5 SHA1 SHA512

Malware Config

Extracted

Family
  • smokeloader

Version
  • 2020

C2
  • http://varmisende.com/upload/

  • http://fernandomayol.com/upload/

  • http://nextlytm.com/upload/

  • http://people4jan.com/upload/

  • http://asfaltwerk.com/upload/

rc4.i32
rc4.i32

Signatures

  • Process spawned unexpected child process 1 IoCs

    This typically indicates the parent process was compromised via an exploit or macro.

  • SmokeLoader

    Modular backdoor trojan in use since 2014.

  • ASPack v2.12-2.42 6 IoCs

    Detects executables packed with ASPack v2.12-2.42

  • Downloads MZ/PE file
  • Executes dropped EXE 13 IoCs
  • Loads dropped DLL 40 IoCs
  • Looks up external IP address via web service 3 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Enumerates physical storage devices 1 TTPs

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

  • Checks SCSI registry key(s) 3 TTPs 3 IoCs

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

  • Script User-Agent 1 IoCs

    Uses user-agent string associated with script host/environment.

  • Suspicious behavior: EnumeratesProcesses 55 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\89DAC1423E1281902DFA3501FED124B1.exe
    "C:\Users\Admin\AppData\Local\Temp\89DAC1423E1281902DFA3501FED124B1.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:736
    • C:\Users\Admin\AppData\Local\Temp\setup_installer.exe
      "C:\Users\Admin\AppData\Local\Temp\setup_installer.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:1928
      • C:\Users\Admin\AppData\Local\Temp\7zS8877DE84\setup_install.exe
        "C:\Users\Admin\AppData\Local\Temp\7zS8877DE84\setup_install.exe"
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Suspicious use of WriteProcessMemory
        PID:1720
        • C:\Windows\SysWOW64\cmd.exe
          C:\Windows\system32\cmd.exe /c powershell -inputformat none -outputformat none -NonInteractive -Command Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp"
          4⤵
            PID:1128
          • C:\Windows\SysWOW64\cmd.exe
            C:\Windows\system32\cmd.exe /c Fri02b3cba8e5ea.exe
            4⤵
            • Loads dropped DLL
            PID:1356
            • C:\Users\Admin\AppData\Local\Temp\7zS8877DE84\Fri02b3cba8e5ea.exe
              Fri02b3cba8e5ea.exe
              5⤵
              • Executes dropped EXE
              • Loads dropped DLL
              • Checks SCSI registry key(s)
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious behavior: MapViewOfSection
              PID:1656
          • C:\Windows\SysWOW64\cmd.exe
            C:\Windows\system32\cmd.exe /c Fri02fc24d8801.exe
            4⤵
            • Loads dropped DLL
            PID:1256
            • C:\Users\Admin\AppData\Local\Temp\7zS8877DE84\Fri02fc24d8801.exe
              Fri02fc24d8801.exe
              5⤵
                PID:576
                • C:\Users\Admin\AppData\Local\Temp\7zS8877DE84\Fri02fc24d8801.exe
                  "C:\Users\Admin\AppData\Local\Temp\7zS8877DE84\Fri02fc24d8801.exe" -a
                  6⤵
                  • Executes dropped EXE
                  • Loads dropped DLL
                  PID:1652
            • C:\Windows\SysWOW64\cmd.exe
              C:\Windows\system32\cmd.exe /c Fri0223b8b387f9569.exe
              4⤵
                PID:1200
              • C:\Windows\SysWOW64\cmd.exe
                C:\Windows\system32\cmd.exe /c Fri02024b3d1237621.exe
                4⤵
                • Loads dropped DLL
                PID:568
                • C:\Users\Admin\AppData\Local\Temp\7zS8877DE84\Fri02024b3d1237621.exe
                  Fri02024b3d1237621.exe
                  5⤵
                  • Executes dropped EXE
                  • Loads dropped DLL
                  PID:1564
                  • C:\Users\Admin\Documents\mh70YlKhKVKvEO84v5VJqBbB.exe
                    "C:\Users\Admin\Documents\mh70YlKhKVKvEO84v5VJqBbB.exe"
                    6⤵
                      PID:2264
                    • C:\Users\Admin\Documents\4evzyHiMLV1C1_2LYzh8G1iM.exe
                      "C:\Users\Admin\Documents\4evzyHiMLV1C1_2LYzh8G1iM.exe"
                      6⤵
                        PID:2276
                      • C:\Users\Admin\Documents\3ZT5y3cCTWLpmKemPffW1hWc.exe
                        "C:\Users\Admin\Documents\3ZT5y3cCTWLpmKemPffW1hWc.exe"
                        6⤵
                          PID:2320
                        • C:\Users\Admin\Documents\2wWGkfpYXaOa5ShoXV2hR6F2.exe
                          "C:\Users\Admin\Documents\2wWGkfpYXaOa5ShoXV2hR6F2.exe"
                          6⤵
                            PID:2308
                          • C:\Users\Admin\Documents\Ux8HWLr_GwSFqF3MhvlNRviF.exe
                            "C:\Users\Admin\Documents\Ux8HWLr_GwSFqF3MhvlNRviF.exe"
                            6⤵
                              PID:2504
                            • C:\Users\Admin\Documents\W6KHGcFpQityc2Q1hbtOUwAA.exe
                              "C:\Users\Admin\Documents\W6KHGcFpQityc2Q1hbtOUwAA.exe"
                              6⤵
                                PID:2492
                              • C:\Users\Admin\Documents\xKRHuSfNK6qtilT8Tgpb7zz6.exe
                                "C:\Users\Admin\Documents\xKRHuSfNK6qtilT8Tgpb7zz6.exe"
                                6⤵
                                  PID:2480
                                • C:\Users\Admin\Documents\4HO8cRZpT2dKflYKpt8PJozo.exe
                                  "C:\Users\Admin\Documents\4HO8cRZpT2dKflYKpt8PJozo.exe"
                                  6⤵
                                    PID:2468
                                  • C:\Users\Admin\Documents\QSkSs3aDK3dNd3vxNDg6UscL.exe
                                    "C:\Users\Admin\Documents\QSkSs3aDK3dNd3vxNDg6UscL.exe"
                                    6⤵
                                      PID:2456
                                    • C:\Users\Admin\Documents\zBbV3gfjgh3f54gGDLvrfrPM.exe
                                      "C:\Users\Admin\Documents\zBbV3gfjgh3f54gGDLvrfrPM.exe"
                                      6⤵
                                        PID:2444
                                      • C:\Users\Admin\Documents\IYkUVrcexiWjcTkIClovEsuG.exe
                                        "C:\Users\Admin\Documents\IYkUVrcexiWjcTkIClovEsuG.exe"
                                        6⤵
                                          PID:2432
                                        • C:\Users\Admin\Documents\DUnn3YJM3oQpjWiq2q74O9Mg.exe
                                          "C:\Users\Admin\Documents\DUnn3YJM3oQpjWiq2q74O9Mg.exe"
                                          6⤵
                                            PID:2420
                                          • C:\Users\Admin\Documents\VePsPViTDS4DnlGhRpMDZyET.exe
                                            "C:\Users\Admin\Documents\VePsPViTDS4DnlGhRpMDZyET.exe"
                                            6⤵
                                              PID:2408
                                            • C:\Users\Admin\Documents\Rgw0VKVgxSyqgzlIJ4a5vvBh.exe
                                              "C:\Users\Admin\Documents\Rgw0VKVgxSyqgzlIJ4a5vvBh.exe"
                                              6⤵
                                                PID:2396
                                              • C:\Users\Admin\Documents\TD3iGjwOiul65A48_X6domPl.exe
                                                "C:\Users\Admin\Documents\TD3iGjwOiul65A48_X6domPl.exe"
                                                6⤵
                                                  PID:2380
                                                • C:\Users\Admin\Documents\UVXgcahDd4w8N4ag1O4Rgn1i.exe
                                                  "C:\Users\Admin\Documents\UVXgcahDd4w8N4ag1O4Rgn1i.exe"
                                                  6⤵
                                                    PID:2372
                                                  • C:\Users\Admin\Documents\2g81d5EVfMeTO4uqYO_bYPpo.exe
                                                    "C:\Users\Admin\Documents\2g81d5EVfMeTO4uqYO_bYPpo.exe"
                                                    6⤵
                                                      PID:2360
                                                    • C:\Users\Admin\Documents\l6JwCDYwPGhhe7QRA76Jcbnc.exe
                                                      "C:\Users\Admin\Documents\l6JwCDYwPGhhe7QRA76Jcbnc.exe"
                                                      6⤵
                                                        PID:2348
                                                      • C:\Users\Admin\Documents\AACkBAqjWDpFyBRNwso3ck4w.exe
                                                        "C:\Users\Admin\Documents\AACkBAqjWDpFyBRNwso3ck4w.exe"
                                                        6⤵
                                                          PID:2800
                                                    • C:\Windows\SysWOW64\cmd.exe
                                                      C:\Windows\system32\cmd.exe /c Fri02f203cfd9edb7298.exe
                                                      4⤵
                                                        PID:1432
                                                      • C:\Windows\SysWOW64\cmd.exe
                                                        C:\Windows\system32\cmd.exe /c Fri023db71e8e.exe
                                                        4⤵
                                                        • Loads dropped DLL
                                                        PID:1640
                                                      • C:\Windows\SysWOW64\cmd.exe
                                                        C:\Windows\system32\cmd.exe /c Fri026b43c7db79.exe
                                                        4⤵
                                                        • Loads dropped DLL
                                                        PID:564
                                                      • C:\Windows\SysWOW64\cmd.exe
                                                        C:\Windows\system32\cmd.exe /c Fri024dbf9c992.exe
                                                        4⤵
                                                        • Loads dropped DLL
                                                        PID:856
                                                      • C:\Windows\SysWOW64\cmd.exe
                                                        C:\Windows\system32\cmd.exe /c Fri020e07c2f8aa8dd.exe
                                                        4⤵
                                                          PID:1264
                                                  • C:\Users\Admin\AppData\Local\Temp\7zS8877DE84\Fri026b43c7db79.exe
                                                    Fri026b43c7db79.exe
                                                    1⤵
                                                    • Executes dropped EXE
                                                    PID:908
                                                  • C:\Users\Admin\AppData\Local\Temp\7zS8877DE84\Fri024dbf9c992.exe
                                                    Fri024dbf9c992.exe
                                                    1⤵
                                                    • Executes dropped EXE
                                                    • Loads dropped DLL
                                                    PID:1008
                                                    • C:\Users\Admin\AppData\Local\Temp\is-34MSB.tmp\Fri024dbf9c992.tmp
                                                      "C:\Users\Admin\AppData\Local\Temp\is-34MSB.tmp\Fri024dbf9c992.tmp" /SL5="$5001C,506086,422400,C:\Users\Admin\AppData\Local\Temp\7zS8877DE84\Fri024dbf9c992.exe"
                                                      2⤵
                                                      • Executes dropped EXE
                                                      • Loads dropped DLL
                                                      PID:520
                                                      • C:\Users\Admin\AppData\Local\Temp\is-L1L12.tmp\zab2our.exe
                                                        "C:\Users\Admin\AppData\Local\Temp\is-L1L12.tmp\zab2our.exe" /S /UID=burnerch2
                                                        3⤵
                                                          PID:1568
                                                    • C:\Users\Admin\AppData\Local\Temp\7zS8877DE84\Fri023db71e8e.exe
                                                      Fri023db71e8e.exe
                                                      1⤵
                                                      • Executes dropped EXE
                                                      • Suspicious use of AdjustPrivilegeToken
                                                      PID:984
                                                      • C:\Users\Admin\AppData\Local\Temp\LzmwAqmV.exe
                                                        "C:\Users\Admin\AppData\Local\Temp\LzmwAqmV.exe"
                                                        2⤵
                                                        • Executes dropped EXE
                                                        • Loads dropped DLL
                                                        PID:576
                                                    • C:\Users\Admin\AppData\Local\Temp\7zS8877DE84\Fri020e07c2f8aa8dd.exe
                                                      "C:\Users\Admin\AppData\Local\Temp\7zS8877DE84\Fri020e07c2f8aa8dd.exe"
                                                      1⤵
                                                      • Executes dropped EXE
                                                      PID:1700
                                                    • C:\Users\Admin\AppData\Local\Temp\7zS8877DE84\Fri020e07c2f8aa8dd.exe
                                                      Fri020e07c2f8aa8dd.exe
                                                      1⤵
                                                      • Executes dropped EXE
                                                      PID:1824
                                                    • C:\Windows\system32\rundll32.exe
                                                      rundll32.exe "C:\Users\Admin\AppData\Local\Temp\sqlite.dll",global
                                                      1⤵
                                                      • Process spawned unexpected child process
                                                      PID:1260
                                                      • C:\Windows\SysWOW64\rundll32.exe
                                                        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\sqlite.dll",global
                                                        2⤵
                                                          PID:2056

                                                      Network

                                                            MITRE ATT&CK Enterprise v6

                                                            Replay Monitor

                                                            Loading Replay Monitor...

                                                            Downloads

                                                            memory/520-181-0x0000000000260000-0x0000000000261000-memory.dmp

                                                            memory/576-195-0x00000000001B0000-0x00000000001B1000-memory.dmp

                                                            memory/736-60-0x0000000075891000-0x0000000075893000-memory.dmp

                                                            memory/908-148-0x00000000010A0000-0x00000000010A1000-memory.dmp

                                                            memory/984-178-0x000000001B000000-0x000000001B002000-memory.dmp

                                                            memory/984-165-0x0000000000220000-0x0000000000221000-memory.dmp

                                                            memory/1008-161-0x0000000000400000-0x000000000046D000-memory.dmp

                                                            memory/1204-184-0x0000000003B70000-0x0000000003B85000-memory.dmp

                                                            memory/1264-180-0x0000000001E50000-0x0000000001E51000-memory.dmp

                                                            memory/1564-191-0x0000000003F10000-0x000000000404F000-memory.dmp

                                                            memory/1568-188-0x0000000000440000-0x0000000000442000-memory.dmp

                                                            memory/1656-182-0x0000000000400000-0x00000000023AC000-memory.dmp

                                                            memory/1656-183-0x0000000000240000-0x0000000000249000-memory.dmp

                                                            memory/1720-89-0x000000006B440000-0x000000006B4CF000-memory.dmp

                                                            memory/1720-119-0x000000006B280000-0x000000006B2A6000-memory.dmp

                                                            memory/1720-91-0x000000006B280000-0x000000006B2A6000-memory.dmp

                                                            memory/1720-90-0x000000006FE40000-0x000000006FFC6000-memory.dmp

                                                            memory/1720-114-0x0000000064940000-0x0000000064959000-memory.dmp

                                                            memory/1720-117-0x000000006B440000-0x000000006B4CF000-memory.dmp

                                                            memory/1720-118-0x000000006FE40000-0x000000006FFC6000-memory.dmp

                                                            memory/1720-116-0x0000000064940000-0x0000000064959000-memory.dmp

                                                            memory/1720-115-0x0000000064940000-0x0000000064959000-memory.dmp

                                                            memory/1720-112-0x0000000064940000-0x0000000064959000-memory.dmp

                                                            memory/2480-226-0x0000000000240000-0x0000000000241000-memory.dmp

                                                            memory/2504-219-0x0000000000880000-0x0000000000881000-memory.dmp