Analysis

  • max time kernel
    150s
  • max time network
    112s
  • platform
    windows10_x64
  • resource
    win10v20210410
  • submitted
    25/07/2021, 06:30

General

  • Target
    96428fec8fcdc425c07cb6874bfdfa74.exe
  • Size 240KB
  • Sample210725-m8ar3c75ea
  • SHA256 d8e97b327ea157afd377759204ca29d44475f50030e1321fa6ca4b05d9c4aed0
  • 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
  • 39.7

Botnet
  • 408

C2
  • https://shpak125.tumblr.com/

Attributes
  • profile_id

    408

Signatures

  • Raccoon

    Simple but powerful infostealer which was very active in 2019.

  • RedLine

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

  • SmokeLoader

    Modular backdoor trojan in use since 2014.

  • Vidar

    Vidar is an infostealer based on Arkei stealer.

  • suricata: ET MALWARE Suspicious Zipped Filename in Outbound POST Request (Passwords.txt)
  • suricata: ET MALWARE Vidar/Arkei Stealer Client Data Upload
  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs
  • Vidar Stealer 1 IoCs
  • Downloads MZ/PE file
  • Executes dropped EXE 6 IoCs
  • Checks BIOS information in registry 2 TTPs 4 IoCs

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

  • Deletes itself 1 IoCs
  • Loads dropped DLL 7 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 4 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 2 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 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.

  • Checks SCSI registry key(s) 3 TTPs 3 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 registry class 2 IoCs
  • Modifies system certificate store 2 TTPs 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: MapViewOfSection 19 IoCs
  • Suspicious use of AdjustPrivilegeToken 53 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\96428fec8fcdc425c07cb6874bfdfa74.exe
    "C:\Users\Admin\AppData\Local\Temp\96428fec8fcdc425c07cb6874bfdfa74.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:4020
    • C:\Users\Admin\AppData\Local\Temp\96428fec8fcdc425c07cb6874bfdfa74.exe
      "C:\Users\Admin\AppData\Local\Temp\96428fec8fcdc425c07cb6874bfdfa74.exe"
      2⤵
      • Checks SCSI registry key(s)
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      PID:2532
  • C:\Users\Admin\AppData\Local\Temp\7CA8.exe
    C:\Users\Admin\AppData\Local\Temp\7CA8.exe
    1⤵
    • Executes dropped EXE
    • Checks BIOS information in registry
    • Checks whether UAC is enabled
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious use of AdjustPrivilegeToken
    PID:3776
  • C:\Users\Admin\AppData\Local\Temp\7EBC.exe
    C:\Users\Admin\AppData\Local\Temp\7EBC.exe
    1⤵
    • Executes dropped EXE
    • Loads dropped DLL
    PID:3048
  • C:\Users\Admin\AppData\Local\Temp\80B1.exe
    C:\Users\Admin\AppData\Local\Temp\80B1.exe
    1⤵
    • Executes dropped EXE
    PID:2032
  • C:\Users\Admin\AppData\Local\Temp\868E.exe
    C:\Users\Admin\AppData\Local\Temp\868E.exe
    1⤵
    • Executes dropped EXE
    PID:1204
  • C:\Users\Admin\AppData\Local\Temp\8CE8.exe
    C:\Users\Admin\AppData\Local\Temp\8CE8.exe
    1⤵
    • Executes dropped EXE
    • Checks BIOS information in registry
    • Checks whether UAC is enabled
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious use of AdjustPrivilegeToken
    PID:2076
  • C:\Users\Admin\AppData\Local\Temp\9025.exe
    C:\Users\Admin\AppData\Local\Temp\9025.exe
    1⤵
    • Executes dropped EXE
    • Loads dropped DLL
    • Checks processor information in registry
    • Modifies system certificate store
    • Suspicious use of WriteProcessMemory
    PID:1320
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /im 9025.exe /f & timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\Temp\9025.exe" & del C:\ProgramData\*.dll & exit
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3048
      • C:\Windows\SysWOW64\taskkill.exe
        taskkill /im 9025.exe /f
        3⤵
        • Kills process with taskkill
        • Suspicious use of AdjustPrivilegeToken
        PID:4040
      • C:\Windows\SysWOW64\timeout.exe
        timeout /t 6
        3⤵
        • Delays execution with timeout.exe
        PID:2308
  • C:\Windows\SysWOW64\explorer.exe
    C:\Windows\SysWOW64\explorer.exe
    1⤵
      PID:3708
    • C:\Windows\explorer.exe
      C:\Windows\explorer.exe
      1⤵
        PID:3796
      • C:\Windows\SysWOW64\explorer.exe
        C:\Windows\SysWOW64\explorer.exe
        1⤵
          PID:2204
        • C:\Windows\explorer.exe
          C:\Windows\explorer.exe
          1⤵
            PID:3916
          • C:\Windows\SysWOW64\explorer.exe
            C:\Windows\SysWOW64\explorer.exe
            1⤵
              PID:188
            • C:\Windows\explorer.exe
              C:\Windows\explorer.exe
              1⤵
                PID:1984
              • C:\Windows\SysWOW64\explorer.exe
                C:\Windows\SysWOW64\explorer.exe
                1⤵
                  PID:1324
                • C:\Windows\explorer.exe
                  C:\Windows\explorer.exe
                  1⤵
                    PID:2176
                  • C:\Windows\SysWOW64\explorer.exe
                    C:\Windows\SysWOW64\explorer.exe
                    1⤵
                      PID:2300

                    Network

                          MITRE ATT&CK Enterprise v6

                          Replay Monitor

                          Loading Replay Monitor...

                          Downloads

                          memory/188-184-0x0000000001090000-0x0000000001099000-memory.dmp

                          memory/188-183-0x00000000010A0000-0x00000000010A5000-memory.dmp

                          memory/1204-156-0x0000000000400000-0x00000000004AA000-memory.dmp

                          memory/1320-174-0x00000000009C0000-0x0000000000B0A000-memory.dmp

                          memory/1320-175-0x0000000000400000-0x00000000008FE000-memory.dmp

                          memory/1324-201-0x0000000001080000-0x0000000001089000-memory.dmp

                          memory/1324-200-0x0000000001090000-0x0000000001094000-memory.dmp

                          memory/1984-189-0x00000000007A0000-0x00000000007A6000-memory.dmp

                          memory/1984-190-0x0000000000790000-0x000000000079C000-memory.dmp

                          memory/2032-144-0x0000000000400000-0x00000000004AA000-memory.dmp

                          memory/2032-143-0x00000000020C0000-0x0000000002151000-memory.dmp

                          memory/2076-152-0x0000000077870000-0x00000000779FE000-memory.dmp

                          memory/2076-162-0x0000000005360000-0x0000000005361000-memory.dmp

                          memory/2076-150-0x00000000008C0000-0x00000000008C1000-memory.dmp

                          memory/2176-205-0x00000000009E0000-0x00000000009E9000-memory.dmp

                          memory/2176-204-0x00000000009F0000-0x00000000009F5000-memory.dmp

                          memory/2204-171-0x0000000001000000-0x0000000001007000-memory.dmp

                          memory/2204-172-0x0000000000DF0000-0x0000000000DFB000-memory.dmp

                          memory/2300-207-0x0000000000730000-0x0000000000735000-memory.dmp

                          memory/2300-208-0x0000000000720000-0x0000000000729000-memory.dmp

                          memory/2532-114-0x0000000000400000-0x0000000000409000-memory.dmp

                          memory/3048-142-0x0000000000400000-0x00000000004AA000-memory.dmp

                          memory/3048-140-0x0000000000530000-0x00000000005DE000-memory.dmp

                          memory/3064-232-0x00000000025F0000-0x0000000002600000-memory.dmp

                          memory/3064-218-0x00000000025F0000-0x0000000002600000-memory.dmp

                          memory/3064-248-0x00000000025F0000-0x0000000002600000-memory.dmp

                          memory/3064-250-0x00000000025F0000-0x0000000002600000-memory.dmp

                          memory/3064-249-0x00000000025F0000-0x0000000002600000-memory.dmp

                          memory/3064-246-0x00000000025F0000-0x0000000002600000-memory.dmp

                          memory/3064-247-0x0000000000810000-0x0000000000820000-memory.dmp

                          memory/3064-244-0x00000000025F0000-0x0000000002600000-memory.dmp

                          memory/3064-245-0x00000000025F0000-0x0000000002600000-memory.dmp

                          memory/3064-225-0x00000000025F0000-0x0000000002600000-memory.dmp

                          memory/3064-226-0x00000000025F0000-0x0000000002600000-memory.dmp

                          memory/3064-242-0x00000000025F0000-0x0000000002600000-memory.dmp

                          memory/3064-223-0x00000000025F0000-0x0000000002600000-memory.dmp

                          memory/3064-243-0x00000000025F0000-0x0000000002600000-memory.dmp

                          memory/3064-241-0x0000000000810000-0x0000000000820000-memory.dmp

                          memory/3064-240-0x00000000025F0000-0x0000000002600000-memory.dmp

                          memory/3064-239-0x00000000025C0000-0x00000000025D0000-memory.dmp

                          memory/3064-117-0x0000000000740000-0x0000000000756000-memory.dmp

                          memory/3064-229-0x00000000025F0000-0x0000000002600000-memory.dmp

                          memory/3064-231-0x00000000025F0000-0x0000000002600000-memory.dmp

                          memory/3064-230-0x00000000025F0000-0x0000000002600000-memory.dmp

                          memory/3064-227-0x00000000025F0000-0x0000000002600000-memory.dmp

                          memory/3064-214-0x0000000002600000-0x0000000002610000-memory.dmp

                          memory/3064-213-0x00000000025F0000-0x0000000002600000-memory.dmp

                          memory/3064-212-0x00000000025C0000-0x00000000025D0000-memory.dmp

                          memory/3064-216-0x00000000025F0000-0x0000000002600000-memory.dmp

                          memory/3064-215-0x00000000025F0000-0x0000000002600000-memory.dmp

                          memory/3064-217-0x00000000025F0000-0x0000000002600000-memory.dmp

                          memory/3064-228-0x0000000002690000-0x00000000026A0000-memory.dmp

                          memory/3064-219-0x00000000025F0000-0x0000000002600000-memory.dmp

                          memory/3064-221-0x00000000025F0000-0x0000000002600000-memory.dmp

                          memory/3064-220-0x0000000002690000-0x00000000026A0000-memory.dmp

                          memory/3064-222-0x0000000002690000-0x00000000026A0000-memory.dmp

                          memory/3064-224-0x00000000025F0000-0x0000000002600000-memory.dmp

                          memory/3708-160-0x00000000006B0000-0x0000000000724000-memory.dmp

                          memory/3708-163-0x0000000000640000-0x00000000006AB000-memory.dmp

                          memory/3776-131-0x00000000052E0000-0x00000000052E1000-memory.dmp

                          memory/3776-187-0x0000000006C80000-0x0000000006C81000-memory.dmp

                          memory/3776-185-0x0000000006AE0000-0x0000000006AE1000-memory.dmp

                          memory/3776-178-0x0000000006610000-0x0000000006611000-memory.dmp

                          memory/3776-179-0x0000000006D10000-0x0000000006D11000-memory.dmp

                          memory/3776-186-0x0000000007740000-0x0000000007741000-memory.dmp

                          memory/3776-124-0x0000000077870000-0x00000000779FE000-memory.dmp

                          memory/3776-130-0x0000000005930000-0x0000000005931000-memory.dmp

                          memory/3776-180-0x0000000006590000-0x0000000006591000-memory.dmp

                          memory/3776-133-0x00000000053A0000-0x00000000053A1000-memory.dmp

                          memory/3776-126-0x0000000000B50000-0x0000000000B51000-memory.dmp

                          memory/3776-132-0x0000000005360000-0x0000000005361000-memory.dmp

                          memory/3776-182-0x0000000006970000-0x0000000006971000-memory.dmp

                          memory/3776-135-0x0000000005540000-0x0000000005541000-memory.dmp

                          memory/3776-134-0x0000000005310000-0x0000000005311000-memory.dmp

                          memory/3796-164-0x0000000000FE0000-0x0000000000FE7000-memory.dmp

                          memory/3796-165-0x0000000000FD0000-0x0000000000FDC000-memory.dmp

                          memory/3916-176-0x0000000000BC0000-0x0000000000BC9000-memory.dmp

                          memory/3916-177-0x0000000000BB0000-0x0000000000BBF000-memory.dmp

                          memory/4020-116-0x00000000001E0000-0x00000000001EA000-memory.dmp