Analysis

  • max time kernel
    150s
  • max time network
    136s
  • platform
    windows7_x64
  • resource
    win7v20210410
  • submitted
    01/08/2021, 07:04

General

  • Target
    9e5fea777637a2a611c00c482da0ed6a.exe
  • Size 340KB
  • Sample210801-e8slvck4e2
  • SHA256 028fe7d08ab916d5239ccd8bcfdcd885ddffdf3821abc01958490daeba45dbec
  • MD5 SHA1 SHA512

Malware Config

Extracted

Family
  • smokeloader

Version
  • 2020

C2
  • http://readinglistforjuly1.xyz/

  • http://readinglistforjuly2.xyz/

  • http://readinglistforjuly3.xyz/

  • http://readinglistforjuly4.xyz/

  • http://readinglistforjuly5.xyz/

  • http://readinglistforjuly6.xyz/

  • http://readinglistforjuly7.xyz/

  • http://readinglistforjuly8.xyz/

  • http://readinglistforjuly9.xyz/

  • http://readinglistforjuly10.xyz/

  • http://readinglistforjuly1.site/

  • http://readinglistforjuly2.site/

  • http://readinglistforjuly3.site/

  • http://readinglistforjuly4.site/

  • http://readinglistforjuly5.site/

  • http://readinglistforjuly6.site/

  • http://readinglistforjuly7.site/

  • http://readinglistforjuly8.site/

  • http://readinglistforjuly9.site/

  • http://readinglistforjuly10.site/

rc4.i32
rc4.i32

Extracted

Family
  • vidar

Version
  • 39.8

Botnet
  • 828

C2
  • https://xeronxikxxx.tumblr.com/

Attributes
  • profile_id

    828

Extracted

Family
  • raccoon

Botnet
  • cd8dc1031358b1aec55cc6bc447df1018b068607

Attributes
  • url4cnc

    https://telete.in/jagressor_kz

rc4.plain
rc4.plain

Signatures

  • Raccoon

    Simple but powerful infostealer which was very active in 2019.

  • Raccoon Stealer Payload 4 IoCs
  • RedLine

    RedLine Stealer is a malware family written in C#, first appearing in early 2020.

  • RedLine Payload 1 IoCs
  • SmokeLoader

    Modular backdoor trojan in use since 2014.

  • Vidar

    Vidar is an infostealer based on Arkei stealer.

  • suricata: ET MALWARE Sharik/Smoke CnC Beacon 11
  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs
  • Vidar Stealer 2 IoCs
  • Downloads MZ/PE file
  • Executes dropped EXE 7 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 11 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.

  • Accesses 2FA software files, possible credential harvesting 2 TTPs
  • Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
  • 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
  • Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
  • Suspicious use of SetThreadContext 2 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 6 IoCs

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

  • Checks processor information in registry 2 TTPs 2 IoCs

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

  • Delays execution with timeout.exe 1 IoCs
  • Kills process with taskkill 1 IoCs
  • Modifies system certificate store 2 TTPs 5 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: MapViewOfSection 20 IoCs
  • Suspicious use of AdjustPrivilegeToken 5 IoCs
  • Suspicious use of FindShellTrayWindow 4 IoCs
  • Suspicious use of SendNotifyMessage 4 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\9e5fea777637a2a611c00c482da0ed6a.exe
    "C:\Users\Admin\AppData\Local\Temp\9e5fea777637a2a611c00c482da0ed6a.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1208
    • C:\Users\Admin\AppData\Local\Temp\9e5fea777637a2a611c00c482da0ed6a.exe
      "C:\Users\Admin\AppData\Local\Temp\9e5fea777637a2a611c00c482da0ed6a.exe"
      2⤵
      • Checks SCSI registry key(s)
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      PID:1384
  • C:\Users\Admin\AppData\Local\Temp\DFF3.exe
    C:\Users\Admin\AppData\Local\Temp\DFF3.exe
    1⤵
    • Executes dropped EXE
    • Checks BIOS information in registry
    • Checks whether UAC is enabled
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious use of AdjustPrivilegeToken
    PID:992
  • C:\Users\Admin\AppData\Local\Temp\E15B.exe
    C:\Users\Admin\AppData\Local\Temp\E15B.exe
    1⤵
    • Executes dropped EXE
    • Loads dropped DLL
    • Checks processor information in registry
    • Modifies system certificate store
    PID:1164
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /im E15B.exe /f & timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\Temp\E15B.exe" & del C:\ProgramData\*.dll & exit
      2⤵
        PID:900
        • C:\Windows\SysWOW64\taskkill.exe
          taskkill /im E15B.exe /f
          3⤵
          • Kills process with taskkill
          • Suspicious use of AdjustPrivilegeToken
          PID:268
        • C:\Windows\SysWOW64\timeout.exe
          timeout /t 6
          3⤵
          • Delays execution with timeout.exe
          PID:1204
    • C:\Users\Admin\AppData\Local\Temp\E5AF.exe
      C:\Users\Admin\AppData\Local\Temp\E5AF.exe
      1⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Modifies system certificate store
      PID:328
    • C:\Users\Admin\AppData\Local\Temp\E9E5.exe
      C:\Users\Admin\AppData\Local\Temp\E9E5.exe
      1⤵
      • Executes dropped EXE
      PID:960
    • C:\Users\Admin\AppData\Local\Temp\ED50.exe
      C:\Users\Admin\AppData\Local\Temp\ED50.exe
      1⤵
      • Executes dropped EXE
      PID:1896
    • C:\Windows\SysWOW64\explorer.exe
      C:\Windows\SysWOW64\explorer.exe
      1⤵
        PID:1536
      • C:\Windows\explorer.exe
        C:\Windows\explorer.exe
        1⤵
          PID:316
        • C:\Windows\SysWOW64\explorer.exe
          C:\Windows\SysWOW64\explorer.exe
          1⤵
            PID:1876
          • C:\Windows\explorer.exe
            C:\Windows\explorer.exe
            1⤵
              PID:1900
            • C:\Windows\SysWOW64\explorer.exe
              C:\Windows\SysWOW64\explorer.exe
              1⤵
                PID:1400
              • C:\Windows\explorer.exe
                C:\Windows\explorer.exe
                1⤵
                  PID:664
                • C:\Windows\SysWOW64\explorer.exe
                  C:\Windows\SysWOW64\explorer.exe
                  1⤵
                    PID:948
                  • C:\Windows\explorer.exe
                    C:\Windows\explorer.exe
                    1⤵
                      PID:1704
                    • C:\Windows\SysWOW64\explorer.exe
                      C:\Windows\SysWOW64\explorer.exe
                      1⤵
                        PID:1556
                      • C:\Windows\system32\taskeng.exe
                        taskeng.exe {D643FBDB-A5AB-4E90-B7A0-DCF9120A479F} S-1-5-21-2513283230-931923277-594887482-1000:MRBKYMNO\Admin:Interactive:[1]
                        1⤵
                          PID:1096
                          • C:\Users\Admin\AppData\Roaming\dvgrefd
                            C:\Users\Admin\AppData\Roaming\dvgrefd
                            2⤵
                            • Executes dropped EXE
                            • Suspicious use of SetThreadContext
                            PID:108
                            • C:\Users\Admin\AppData\Roaming\dvgrefd
                              C:\Users\Admin\AppData\Roaming\dvgrefd
                              3⤵
                              • Executes dropped EXE
                              • Checks SCSI registry key(s)
                              • Suspicious behavior: MapViewOfSection
                              PID:1888

                        Network

                              MITRE ATT&CK Enterprise v6

                              Replay Monitor

                              Loading Replay Monitor...

                              Downloads

                              memory/316-96-0x00000000000F0000-0x00000000000F7000-memory.dmp

                              memory/316-97-0x00000000000E0000-0x00000000000EC000-memory.dmp

                              memory/328-81-0x00000000002D0000-0x0000000000361000-memory.dmp

                              memory/328-82-0x0000000000400000-0x0000000001457000-memory.dmp

                              memory/664-123-0x0000000000060000-0x000000000006C000-memory.dmp

                              memory/664-122-0x0000000000070000-0x0000000000076000-memory.dmp

                              memory/948-127-0x0000000000090000-0x0000000000094000-memory.dmp

                              memory/948-128-0x0000000000080000-0x0000000000089000-memory.dmp

                              memory/960-86-0x0000000000400000-0x0000000001457000-memory.dmp

                              memory/992-70-0x0000000000BA0000-0x0000000000BA1000-memory.dmp

                              memory/992-75-0x0000000005440000-0x0000000005441000-memory.dmp

                              memory/1164-76-0x0000000000400000-0x000000000146C000-memory.dmp

                              memory/1164-77-0x0000000000220000-0x00000000002BD000-memory.dmp

                              memory/1208-62-0x00000000001B0000-0x00000000001BA000-memory.dmp

                              memory/1256-63-0x00000000029B0000-0x00000000029C6000-memory.dmp

                              memory/1256-154-0x0000000002AE0000-0x0000000002AF6000-memory.dmp

                              memory/1384-59-0x0000000000400000-0x0000000000409000-memory.dmp

                              memory/1384-61-0x0000000075561000-0x0000000075563000-memory.dmp

                              memory/1400-116-0x0000000000080000-0x0000000000089000-memory.dmp

                              memory/1400-115-0x0000000000090000-0x0000000000095000-memory.dmp

                              memory/1536-93-0x00000000001E0000-0x0000000000254000-memory.dmp

                              memory/1536-94-0x0000000000080000-0x00000000000EB000-memory.dmp

                              memory/1536-91-0x000000006E571000-0x000000006E573000-memory.dmp

                              memory/1556-135-0x0000000000110000-0x0000000000115000-memory.dmp

                              memory/1556-136-0x0000000000100000-0x0000000000109000-memory.dmp

                              memory/1704-130-0x00000000000F0000-0x00000000000F5000-memory.dmp

                              memory/1704-131-0x0000000000060000-0x0000000000069000-memory.dmp

                              memory/1876-108-0x0000000000080000-0x000000000008B000-memory.dmp

                              memory/1876-107-0x0000000000090000-0x0000000000097000-memory.dmp

                              memory/1876-106-0x000000006EBD1000-0x000000006EBD3000-memory.dmp

                              memory/1896-92-0x0000000000400000-0x0000000001457000-memory.dmp

                              memory/1900-111-0x0000000000060000-0x000000000006F000-memory.dmp

                              memory/1900-110-0x0000000000070000-0x0000000000079000-memory.dmp