Analysis

  • max time kernel
    153s
  • max time network
    123s
  • platform
    windows10_x64
  • resource
    win10v20210408
  • submitted
    29-08-2021 06:46

General

  • Target

    cecf25eab4285753ad7fa006aabf4405.exe

  • Size

    143KB

  • MD5

    cecf25eab4285753ad7fa006aabf4405

  • SHA1

    366b60cf4a63e304c64258596aecc2b19007ad00

  • SHA256

    27c106e7c9e455f880849d79759df345d2117aa2e2357696dabb51bc11adce8b

  • SHA512

    15dba194b8fbc367e41a55138bdef6f604dbb011a4bfa4208df75f51f346403784393a35144089a01a73e9961f5a4d5cb4ad40e183a52407fb015dbf3063d54b

Malware Config

Extracted

Family

smokeloader

Version

2020

C2

http://readinglistforaugust1.xyz/

http://readinglistforaugust2.xyz/

http://readinglistforaugust3.xyz/

http://readinglistforaugust4.xyz/

http://readinglistforaugust5.xyz/

http://readinglistforaugust6.xyz/

http://readinglistforaugust7.xyz/

http://readinglistforaugust8.xyz/

http://readinglistforaugust9.xyz/

http://readinglistforaugust10.xyz/

http://readinglistforaugust1.site/

http://readinglistforaugust2.site/

http://readinglistforaugust3.site/

http://readinglistforaugust4.site/

http://readinglistforaugust5.site/

http://readinglistforaugust6.site/

http://readinglistforaugust7.site/

http://readinglistforaugust8.site/

http://readinglistforaugust9.site/

http://readinglistforaugust10.site/

rc4.i32
rc4.i32

Signatures

  • SmokeLoader

    Modular backdoor trojan in use since 2014.

  • Deletes itself 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Checks SCSI registry key(s) 3 TTPs 3 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: MapViewOfSection 19 IoCs
  • Suspicious use of UnmapMainImage 1 IoCs
  • Suspicious use of WriteProcessMemory 38 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\cecf25eab4285753ad7fa006aabf4405.exe
    "C:\Users\Admin\AppData\Local\Temp\cecf25eab4285753ad7fa006aabf4405.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:4796
    • C:\Users\Admin\AppData\Local\Temp\cecf25eab4285753ad7fa006aabf4405.exe
      "C:\Users\Admin\AppData\Local\Temp\cecf25eab4285753ad7fa006aabf4405.exe"
      2⤵
      • Checks SCSI registry key(s)
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      PID:4164
  • C:\Windows\SysWOW64\explorer.exe
    C:\Windows\SysWOW64\explorer.exe
    1⤵
      PID:500
    • C:\Windows\explorer.exe
      C:\Windows\explorer.exe
      1⤵
        PID:908
      • C:\Windows\SysWOW64\explorer.exe
        C:\Windows\SysWOW64\explorer.exe
        1⤵
          PID:352
        • C:\Windows\explorer.exe
          C:\Windows\explorer.exe
          1⤵
            PID:1080
          • C:\Windows\SysWOW64\explorer.exe
            C:\Windows\SysWOW64\explorer.exe
            1⤵
              PID:1212
            • C:\Windows\explorer.exe
              C:\Windows\explorer.exe
              1⤵
                PID:1412
              • C:\Windows\SysWOW64\explorer.exe
                C:\Windows\SysWOW64\explorer.exe
                1⤵
                  PID:1564
                • C:\Windows\explorer.exe
                  C:\Windows\explorer.exe
                  1⤵
                    PID:1804
                  • C:\Windows\SysWOW64\explorer.exe
                    C:\Windows\SysWOW64\explorer.exe
                    1⤵
                      PID:2040

                    Network

                    MITRE ATT&CK Enterprise v6

                    Replay Monitor

                    Loading Replay Monitor...

                    Downloads

                    • memory/352-125-0x0000000000410000-0x0000000000417000-memory.dmp

                      Filesize

                      28KB

                    • memory/352-126-0x0000000000400000-0x000000000040B000-memory.dmp

                      Filesize

                      44KB

                    • memory/352-124-0x0000000000000000-mapping.dmp

                    • memory/500-118-0x0000000000000000-mapping.dmp

                    • memory/500-120-0x00000000006C0000-0x000000000072B000-memory.dmp

                      Filesize

                      428KB

                    • memory/500-119-0x0000000000730000-0x00000000007A4000-memory.dmp

                      Filesize

                      464KB

                    • memory/908-122-0x00000000003A0000-0x00000000003A7000-memory.dmp

                      Filesize

                      28KB

                    • memory/908-121-0x0000000000000000-mapping.dmp

                    • memory/908-123-0x0000000000390000-0x000000000039C000-memory.dmp

                      Filesize

                      48KB

                    • memory/1080-129-0x0000000000CC0000-0x0000000000CCF000-memory.dmp

                      Filesize

                      60KB

                    • memory/1080-128-0x0000000000CD0000-0x0000000000CD9000-memory.dmp

                      Filesize

                      36KB

                    • memory/1080-127-0x0000000000000000-mapping.dmp

                    • memory/1212-131-0x0000000000370000-0x0000000000375000-memory.dmp

                      Filesize

                      20KB

                    • memory/1212-132-0x0000000000360000-0x0000000000369000-memory.dmp

                      Filesize

                      36KB

                    • memory/1212-130-0x0000000000000000-mapping.dmp

                    • memory/1412-134-0x00000000005B0000-0x00000000005B6000-memory.dmp

                      Filesize

                      24KB

                    • memory/1412-133-0x0000000000000000-mapping.dmp

                    • memory/1412-135-0x00000000005A0000-0x00000000005AC000-memory.dmp

                      Filesize

                      48KB

                    • memory/1564-136-0x0000000000000000-mapping.dmp

                    • memory/1564-137-0x00000000033B0000-0x00000000033B4000-memory.dmp

                      Filesize

                      16KB

                    • memory/1564-138-0x00000000033A0000-0x00000000033A9000-memory.dmp

                      Filesize

                      36KB

                    • memory/1804-139-0x0000000000000000-mapping.dmp

                    • memory/1804-140-0x0000000000D70000-0x0000000000D75000-memory.dmp

                      Filesize

                      20KB

                    • memory/1804-141-0x0000000000D60000-0x0000000000D69000-memory.dmp

                      Filesize

                      36KB

                    • memory/2040-142-0x0000000000000000-mapping.dmp

                    • memory/2040-144-0x0000000000930000-0x0000000000939000-memory.dmp

                      Filesize

                      36KB

                    • memory/2040-143-0x0000000000940000-0x0000000000945000-memory.dmp

                      Filesize

                      20KB

                    • memory/2900-117-0x0000000001040000-0x0000000001056000-memory.dmp

                      Filesize

                      88KB

                    • memory/4164-116-0x0000000000402FAB-mapping.dmp

                    • memory/4164-115-0x0000000000400000-0x0000000000409000-memory.dmp

                      Filesize

                      36KB

                    • memory/4796-114-0x0000000001D80000-0x0000000001ECA000-memory.dmp

                      Filesize

                      1.3MB