Analysis

  • max time kernel
    4265100s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220112
  • submitted
    17/01/2022, 09:07

General

  • Target

    91409398a37f95ac3501f372a7d9a6b8.exe

  • Size

    277KB

  • MD5

    91409398a37f95ac3501f372a7d9a6b8

  • SHA1

    fc8089310ec1d3c1a42d7aa5d343c8fe2f2b7731

  • SHA256

    39e1259929a3470b6d064daadf4742ddd59065fa1d72aa334ed298648f27697f

  • SHA512

    5e8d9d69da0a23f21f611272fe035e52ceec87fa0ae3ec5c07dcddaa908c41fc36ce67a64cc1de19b2ba69822ca5b43b4b18ab0ab25dcdd1b1dbb1a42c9a1282

Malware Config

Extracted

Family

smokeloader

Version

2020

C2

http://host-data-coin-11.com/

http://file-coin-host-12.com/

http://srtuiyhuali.at/

http://fufuiloirtu.com/

http://amogohuigotuli.at/

http://novohudosovu.com/

http://brutuilionust.com/

http://bubushkalioua.com/

http://dumuilistrati.at/

http://verboliatsiaeeees.com/

rc4.i32
rc4.i32
rc4.i32
rc4.i32

Extracted

Family

arkei

Botnet

Default

C2

http://file-file-host4.com/tratata.php

Extracted

Family

tofsee

C2

patmushta.info

parubey.info

Signatures

  • Arkei

    Arkei is an infostealer written in C++.

  • 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.

  • Arkei Stealer Payload 2 IoCs
  • Creates new service(s) 1 TTPs
  • Downloads MZ/PE file
  • Executes dropped EXE 6 IoCs
  • Modifies Windows Firewall 1 TTPs
  • Sets service image path in registry 2 TTPs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Drops file in System32 directory 1 IoCs
  • Suspicious use of SetThreadContext 3 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 3 IoCs
  • 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 5 IoCs

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

  • Enumerates system info in registry 2 TTPs 2 IoCs
  • Modifies data under HKEY_USERS 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: MapViewOfSection 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 21 IoCs
  • Suspicious use of WriteProcessMemory 51 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\91409398a37f95ac3501f372a7d9a6b8.exe
    "C:\Users\Admin\AppData\Local\Temp\91409398a37f95ac3501f372a7d9a6b8.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:764
    • C:\Users\Admin\AppData\Local\Temp\91409398a37f95ac3501f372a7d9a6b8.exe
      "C:\Users\Admin\AppData\Local\Temp\91409398a37f95ac3501f372a7d9a6b8.exe"
      2⤵
      • Checks SCSI registry key(s)
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      PID:4064
  • C:\Windows\system32\MusNotification.exe
    C:\Windows\system32\MusNotification.exe
    1⤵
    • Checks processor information in registry
    • Suspicious use of AdjustPrivilegeToken
    PID:3132
  • C:\Users\Admin\AppData\Local\Temp\3D69.exe
    C:\Users\Admin\AppData\Local\Temp\3D69.exe
    1⤵
    • Executes dropped EXE
    • Checks SCSI registry key(s)
    • Suspicious behavior: MapViewOfSection
    PID:3084
  • C:\Users\Admin\AppData\Local\Temp\4421.exe
    C:\Users\Admin\AppData\Local\Temp\4421.exe
    1⤵
    • Executes dropped EXE
    PID:3384
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 3384 -s 552
      2⤵
      • Program crash
      • Checks processor information in registry
      • Enumerates system info in registry
      • Suspicious use of AdjustPrivilegeToken
      PID:1084
  • C:\Users\Admin\AppData\Local\Temp\472F.exe
    C:\Users\Admin\AppData\Local\Temp\472F.exe
    1⤵
    • Executes dropped EXE
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3024
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\jmtvfxng\
      2⤵
        PID:3652
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\gnizejvc.exe" C:\Windows\SysWOW64\jmtvfxng\
        2⤵
          PID:2152
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" create jmtvfxng binPath= "C:\Windows\SysWOW64\jmtvfxng\gnizejvc.exe /d\"C:\Users\Admin\AppData\Local\Temp\472F.exe\"" type= own start= auto DisplayName= "wifi support"
          2⤵
            PID:1880
          • C:\Windows\SysWOW64\sc.exe
            "C:\Windows\System32\sc.exe" description jmtvfxng "wifi internet conection"
            2⤵
              PID:3252
            • C:\Windows\SysWOW64\sc.exe
              "C:\Windows\System32\sc.exe" start jmtvfxng
              2⤵
                PID:2964
              • 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:520
                • C:\Windows\SysWOW64\WerFault.exe
                  C:\Windows\SysWOW64\WerFault.exe -u -p 3024 -s 664
                  2⤵
                  • Program crash
                  PID:1392
              • C:\Users\Admin\AppData\Local\Temp\48E5.exe
                C:\Users\Admin\AppData\Local\Temp\48E5.exe
                1⤵
                • Executes dropped EXE
                • Suspicious use of SetThreadContext
                • Suspicious use of AdjustPrivilegeToken
                • Suspicious use of WriteProcessMemory
                PID:744
                • C:\Users\Admin\AppData\Local\Temp\48E5.exe
                  C:\Users\Admin\AppData\Local\Temp\48E5.exe
                  2⤵
                  • Executes dropped EXE
                  PID:1376
              • C:\Windows\SysWOW64\jmtvfxng\gnizejvc.exe
                C:\Windows\SysWOW64\jmtvfxng\gnizejvc.exe /d"C:\Users\Admin\AppData\Local\Temp\472F.exe"
                1⤵
                • Executes dropped EXE
                • Suspicious use of SetThreadContext
                • Suspicious use of WriteProcessMemory
                PID:1208
                • C:\Windows\SysWOW64\svchost.exe
                  svchost.exe
                  2⤵
                  • Drops file in System32 directory
                  • Modifies data under HKEY_USERS
                  PID:1324
                • C:\Windows\SysWOW64\WerFault.exe
                  C:\Windows\SysWOW64\WerFault.exe -u -p 1208 -s 520
                  2⤵
                  • Program crash
                  PID:436
              • C:\Windows\SysWOW64\WerFault.exe
                C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 3024 -ip 3024
                1⤵
                  PID:3352
                • C:\Windows\SysWOW64\WerFault.exe
                  C:\Windows\SysWOW64\WerFault.exe -pss -s 496 -p 1208 -ip 1208
                  1⤵
                    PID:1540
                  • C:\Windows\SysWOW64\WerFault.exe
                    C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 3384 -ip 3384
                    1⤵
                    • Suspicious use of NtCreateProcessExOtherParentProcess
                    • Suspicious use of WriteProcessMemory
                    PID:1356

                  Network

                        MITRE ATT&CK Enterprise v6

                        Replay Monitor

                        Loading Replay Monitor...

                        Downloads

                        • memory/744-166-0x00000000058D0000-0x00000000058EE000-memory.dmp

                          Filesize

                          120KB

                        • memory/744-168-0x0000000005F70000-0x0000000006514000-memory.dmp

                          Filesize

                          5.6MB

                        • memory/744-155-0x0000000000F10000-0x0000000000F9A000-memory.dmp

                          Filesize

                          552KB

                        • memory/744-164-0x0000000005910000-0x0000000005986000-memory.dmp

                          Filesize

                          472KB

                        • memory/744-162-0x0000000003250000-0x0000000003251000-memory.dmp

                          Filesize

                          4KB

                        • memory/744-161-0x00000000059A0000-0x00000000059A1000-memory.dmp

                          Filesize

                          4KB

                        • memory/744-154-0x0000000000F10000-0x0000000000F9A000-memory.dmp

                          Filesize

                          552KB

                        • memory/764-130-0x00000000008E8000-0x00000000008F9000-memory.dmp

                          Filesize

                          68KB

                        • memory/764-131-0x0000000000860000-0x0000000000869000-memory.dmp

                          Filesize

                          36KB

                        • memory/1208-172-0x00000000008A3000-0x00000000008B3000-memory.dmp

                          Filesize

                          64KB

                        • memory/1208-177-0x0000000000400000-0x00000000005CF000-memory.dmp

                          Filesize

                          1.8MB

                        • memory/1324-174-0x00000000003D0000-0x00000000003E5000-memory.dmp

                          Filesize

                          84KB

                        • memory/1324-176-0x00000000002F0000-0x00000000002F1000-memory.dmp

                          Filesize

                          4KB

                        • memory/1324-175-0x00000000002F0000-0x00000000002F1000-memory.dmp

                          Filesize

                          4KB

                        • memory/1376-186-0x0000000004E70000-0x0000000004F7A000-memory.dmp

                          Filesize

                          1.0MB

                        • memory/1376-185-0x0000000002980000-0x0000000002992000-memory.dmp

                          Filesize

                          72KB

                        • memory/1376-188-0x0000000004D60000-0x0000000005378000-memory.dmp

                          Filesize

                          6.1MB

                        • memory/1376-179-0x0000000000400000-0x0000000000420000-memory.dmp

                          Filesize

                          128KB

                        • memory/1376-187-0x0000000004D60000-0x0000000004D9C000-memory.dmp

                          Filesize

                          240KB

                        • memory/1376-183-0x0000000000400000-0x0000000000420000-memory.dmp

                          Filesize

                          128KB

                        • memory/1376-182-0x0000000000400000-0x0000000000420000-memory.dmp

                          Filesize

                          128KB

                        • memory/1376-184-0x0000000005380000-0x0000000005998000-memory.dmp

                          Filesize

                          6.1MB

                        • memory/2508-134-0x0000000000C60000-0x0000000000C76000-memory.dmp

                          Filesize

                          88KB

                        • memory/2508-171-0x0000000002E50000-0x0000000002E66000-memory.dmp

                          Filesize

                          88KB

                        • memory/3024-158-0x0000000000400000-0x00000000005CF000-memory.dmp

                          Filesize

                          1.8MB

                        • memory/3024-157-0x0000000000740000-0x0000000000753000-memory.dmp

                          Filesize

                          76KB

                        • memory/3024-153-0x0000000000609000-0x000000000061A000-memory.dmp

                          Filesize

                          68KB

                        • memory/3084-140-0x0000000000400000-0x0000000000452000-memory.dmp

                          Filesize

                          328KB

                        • memory/3084-139-0x0000000000580000-0x0000000000589000-memory.dmp

                          Filesize

                          36KB

                        • memory/3084-138-0x0000000000560000-0x0000000000569000-memory.dmp

                          Filesize

                          36KB

                        • memory/3384-149-0x0000000000400000-0x00000000005D0000-memory.dmp

                          Filesize

                          1.8MB

                        • memory/3384-144-0x00000000007A9000-0x00000000007BA000-memory.dmp

                          Filesize

                          68KB

                        • memory/3384-148-0x0000000000720000-0x000000000073C000-memory.dmp

                          Filesize

                          112KB

                        • memory/4064-133-0x0000000000400000-0x0000000000409000-memory.dmp

                          Filesize

                          36KB