Analysis

  • max time kernel
    156s
  • max time network
    159s
  • platform
    windows7_x64
  • resource
    win7v20210408
  • submitted
    29-08-2021 09:47

General

  • Target

    2cbfec5cd3f0662c2715c07cb5137bc9.exe

  • Size

    139KB

  • MD5

    2cbfec5cd3f0662c2715c07cb5137bc9

  • SHA1

    d9d8cbb7e646d492aaff3280898b79bb764eabf9

  • SHA256

    7a0413cd0a25ed760cf3e17c60ce915b28c0472a658ba910d76435c19213dfac

  • SHA512

    80450e2cd7d059cfa9f2d752f2b4d4a9d642006879a5900f102e622eadede260db97103b55ceaa408896ac87f9e82a76b87f7d34328756bdd9b57d219e0ff7fc

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

Extracted

Family

raccoon

Botnet

fe582536ec580228180f270f7cb80a867860e010

Attributes
  • url4cnc

    https://telete.in/xylichanjk

rc4.plain
rc4.plain

Extracted

Family

raccoon

Botnet

d02c5d65069fc7ce1993e7c52edf0c9c4c195c81

Attributes
  • url4cnc

    https://telete.in/open3entershift

rc4.plain
rc4.plain

Signatures

  • Raccoon

    Simple but powerful infostealer which was very active in 2019.

  • SmokeLoader

    Modular backdoor trojan in use since 2014.

  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs
  • Downloads MZ/PE file
  • Executes dropped EXE 6 IoCs
  • Checks BIOS information in registry 2 TTPs 2 IoCs

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

  • Deletes itself 1 IoCs
  • Loads dropped DLL 16 IoCs
  • Reads user/profile data of local email clients 2 TTPs

    Email clients store some user data on disk where infostealers will often target it.

  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Themida packer 2 IoCs

    Detects Themida, an advanced Windows software protection system.

  • Adds Run key to start application 2 TTPs 2 IoCs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Looks up external IP address via web service 1 IoCs

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

  • Suspicious use of NtSetInformationThreadHideFromDebugger 1 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.

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

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

  • Modifies system certificate store 2 TTPs 5 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: MapViewOfSection 13 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of FindShellTrayWindow 4 IoCs
  • Suspicious use of SendNotifyMessage 4 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2cbfec5cd3f0662c2715c07cb5137bc9.exe
    "C:\Users\Admin\AppData\Local\Temp\2cbfec5cd3f0662c2715c07cb5137bc9.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1784
    • C:\Users\Admin\AppData\Local\Temp\2cbfec5cd3f0662c2715c07cb5137bc9.exe
      "C:\Users\Admin\AppData\Local\Temp\2cbfec5cd3f0662c2715c07cb5137bc9.exe"
      2⤵
      • Checks SCSI registry key(s)
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      PID:1176
  • C:\Users\Admin\AppData\Local\Temp\4EBC.exe
    C:\Users\Admin\AppData\Local\Temp\4EBC.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetWindowsHookEx
    PID:1476
  • C:\Users\Admin\AppData\Local\Temp\4FA7.exe
    C:\Users\Admin\AppData\Local\Temp\4FA7.exe
    1⤵
    • Executes dropped EXE
    • Loads dropped DLL
    • Modifies system certificate store
    PID:544
  • C:\Users\Admin\AppData\Local\Temp\AE6A.exe
    C:\Users\Admin\AppData\Local\Temp\AE6A.exe
    1⤵
    • Executes dropped EXE
    • Checks BIOS information in registry
    • Checks whether UAC is enabled
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    PID:864
  • C:\Users\Admin\AppData\Local\Temp\AF94.exe
    C:\Users\Admin\AppData\Local\Temp\AF94.exe
    1⤵
    • Executes dropped EXE
    • Loads dropped DLL
    • Adds Run key to start application
    • Modifies system certificate store
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1840
    • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\TrustedInstaller.exe
      "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\TrustedInstaller.exe" -start
      2⤵
      • Executes dropped EXE
      PID:572
    • C:\Windows\SysWOW64\notepad.exe
      notepad.exe
      2⤵
        PID:1508
    • C:\Users\Admin\AppData\Local\Temp\B12A.exe
      C:\Users\Admin\AppData\Local\Temp\B12A.exe
      1⤵
      • Executes dropped EXE
      • Loads dropped DLL
      PID:1580
    • C:\Windows\SysWOW64\explorer.exe
      C:\Windows\SysWOW64\explorer.exe
      1⤵
        PID:1388
      • C:\Windows\explorer.exe
        C:\Windows\explorer.exe
        1⤵
          PID:1344
        • C:\Windows\SysWOW64\explorer.exe
          C:\Windows\SysWOW64\explorer.exe
          1⤵
            PID:1900
          • C:\Windows\explorer.exe
            C:\Windows\explorer.exe
            1⤵
              PID:1468
            • C:\Windows\SysWOW64\explorer.exe
              C:\Windows\SysWOW64\explorer.exe
              1⤵
                PID:1064
              • C:\Windows\explorer.exe
                C:\Windows\explorer.exe
                1⤵
                  PID:968

                Network

                MITRE ATT&CK Enterprise v6

                Replay Monitor

                Loading Replay Monitor...

                Downloads

                • memory/544-72-0x0000000000220000-0x00000000002AF000-memory.dmp

                  Filesize

                  572KB

                • memory/544-73-0x0000000000400000-0x0000000001DB5000-memory.dmp

                  Filesize

                  25.7MB

                • memory/864-93-0x0000000000830000-0x0000000000831000-memory.dmp

                  Filesize

                  4KB

                • memory/864-103-0x0000000005260000-0x0000000005261000-memory.dmp

                  Filesize

                  4KB

                • memory/1064-123-0x00000000000C0000-0x00000000000C9000-memory.dmp

                  Filesize

                  36KB

                • memory/1064-122-0x00000000000D0000-0x00000000000D5000-memory.dmp

                  Filesize

                  20KB

                • memory/1176-62-0x00000000754F1000-0x00000000754F3000-memory.dmp

                  Filesize

                  8KB

                • memory/1176-60-0x0000000000400000-0x0000000000409000-memory.dmp

                  Filesize

                  36KB

                • memory/1220-64-0x0000000002BE0000-0x0000000002BF6000-memory.dmp

                  Filesize

                  88KB

                • memory/1344-102-0x0000000000060000-0x000000000006C000-memory.dmp

                  Filesize

                  48KB

                • memory/1344-101-0x0000000000070000-0x0000000000077000-memory.dmp

                  Filesize

                  28KB

                • memory/1388-97-0x00000000738C1000-0x00000000738C3000-memory.dmp

                  Filesize

                  8KB

                • memory/1388-100-0x0000000000120000-0x000000000018B000-memory.dmp

                  Filesize

                  428KB

                • memory/1388-99-0x0000000000190000-0x0000000000204000-memory.dmp

                  Filesize

                  464KB

                • memory/1468-117-0x0000000000060000-0x000000000006F000-memory.dmp

                  Filesize

                  60KB

                • memory/1468-116-0x0000000000070000-0x0000000000079000-memory.dmp

                  Filesize

                  36KB

                • memory/1580-94-0x00000000002A0000-0x000000000032F000-memory.dmp

                  Filesize

                  572KB

                • memory/1580-96-0x0000000000400000-0x0000000001DB7000-memory.dmp

                  Filesize

                  25.7MB

                • memory/1784-63-0x0000000000220000-0x000000000022A000-memory.dmp

                  Filesize

                  40KB

                • memory/1900-114-0x00000000000C0000-0x00000000000CB000-memory.dmp

                  Filesize

                  44KB

                • memory/1900-113-0x00000000000D0000-0x00000000000D7000-memory.dmp

                  Filesize

                  28KB

                • memory/1900-107-0x000000006DF81000-0x000000006DF83000-memory.dmp

                  Filesize

                  8KB