Analysis

  • max time kernel
    103s
  • max time network
    142s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    02/01/2024, 16:55

General

  • Target
    3e83abe805ea3cd0852235f3365e1cf9.exe
  • Size 3.3MB
  • Sample240102-vffz8sadbl
  • SHA256 079e8468f9e6f11a839e931ab04d45036acb2574aa37a4f749d6db98a61509cc
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • nullmixer

C2
  • http://razino.xyz/

Extracted

Family
  • vidar

Version
  • 39.4

Botnet
  • 706

C2
  • https://sergeevih43.tumblr.com/

Attributes
  • profile_id

    706

Extracted

Family
  • smokeloader

Botnet
  • pub5

Extracted

Family
  • smokeloader

Version
  • 2020

C2
  • http://ppcspb.com/upload/

  • http://mebbing.com/upload/

  • http://twcamel.com/upload/

  • http://howdycash.com/upload/

  • http://lahuertasonora.com/upload/

  • http://kpotiques.com/upload/

rc4.i32
rc4.i32

Signatures

  • Modifies Windows Defender Real-time Protection settings 3 TTPs 7 IoCs
  • NullMixer

    NullMixer is a malware dropper leading to an infection chain of a wide variety of malware families.

  • SmokeLoader

    Modular backdoor trojan in use since 2014.

  • Vidar

    Vidar is an infostealer based on Arkei stealer.

  • Nirsoft 3 IoCs
  • Vidar Stealer 4 IoCs
  • ASPack v2.12-2.42 4 IoCs

    Detects executables packed with ASPack v2.12-2.42

  • Checks computer location settings 2 TTPs 2 IoCs

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

  • Executes dropped EXE 10 IoCs
  • Loads dropped DLL 9 IoCs
  • UPX packed file 5 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Looks up external IP address via web service 3 IoCs

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

  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 4 IoCs
  • Checks SCSI registry key(s) 3 TTPs 3 IoCs

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

  • Modifies registry class 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 20 IoCs
  • Suspicious use of WriteProcessMemory 54 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

Processes

  • C:\Users\Admin\AppData\Local\Temp\3e83abe805ea3cd0852235f3365e1cf9.exe
    "C:\Users\Admin\AppData\Local\Temp\3e83abe805ea3cd0852235f3365e1cf9.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1996
    • C:\Users\Admin\AppData\Local\Temp\7zSCC73AF17\setup_install.exe
      "C:\Users\Admin\AppData\Local\Temp\7zSCC73AF17\setup_install.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:2144
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 2144 -s 544
        3⤵
        • Program crash
        PID:3080
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c sotema_7.exe
        3⤵
          PID:2748
        • C:\Windows\SysWOW64\cmd.exe
          C:\Windows\system32\cmd.exe /c sotema_6.exe
          3⤵
          • Suspicious use of WriteProcessMemory
          PID:4928
        • C:\Windows\SysWOW64\cmd.exe
          C:\Windows\system32\cmd.exe /c sotema_5.exe
          3⤵
          • Suspicious use of WriteProcessMemory
          PID:5056
        • C:\Windows\SysWOW64\cmd.exe
          C:\Windows\system32\cmd.exe /c sotema_4.exe
          3⤵
          • Suspicious use of WriteProcessMemory
          PID:2036
        • C:\Windows\SysWOW64\cmd.exe
          C:\Windows\system32\cmd.exe /c sotema_3.exe
          3⤵
          • Suspicious use of WriteProcessMemory
          PID:2624
        • C:\Windows\SysWOW64\cmd.exe
          C:\Windows\system32\cmd.exe /c sotema_2.exe
          3⤵
          • Suspicious use of WriteProcessMemory
          PID:5000
        • C:\Windows\SysWOW64\cmd.exe
          C:\Windows\system32\cmd.exe /c sotema_1.exe
          3⤵
          • Suspicious use of WriteProcessMemory
          PID:3812
    • C:\Users\Admin\AppData\Local\Temp\7zSCC73AF17\sotema_6.exe
      sotema_6.exe
      1⤵
      • Executes dropped EXE
      • Suspicious use of WriteProcessMemory
      PID:208
      • C:\Users\Admin\AppData\Local\Temp\is-IETH7.tmp\sotema_6.tmp
        "C:\Users\Admin\AppData\Local\Temp\is-IETH7.tmp\sotema_6.tmp" /SL5="$D003E,506127,422400,C:\Users\Admin\AppData\Local\Temp\7zSCC73AF17\sotema_6.exe"
        2⤵
        • Executes dropped EXE
        • Loads dropped DLL
        PID:3864
    • C:\Users\Admin\AppData\Local\Temp\7zSCC73AF17\sotema_4.exe
      sotema_4.exe
      1⤵
      • Executes dropped EXE
      • Suspicious use of WriteProcessMemory
      PID:3560
      • C:\Users\Admin\AppData\Local\Temp\jfiag3g_gg.exe
        C:\Users\Admin\AppData\Local\Temp\jfiag3g_gg.exe /scookiestxt C:\Users\Admin\AppData\Local\Temp\fj4ghga23_fsa.txt
        2⤵
        • Executes dropped EXE
        PID:2460
      • C:\Users\Admin\AppData\Local\Temp\jfiag3g_gg.exe
        C:\Users\Admin\AppData\Local\Temp\jfiag3g_gg.exe /scookiestxt C:\Users\Admin\AppData\Local\Temp\fj4ghga23_fsa.txt
        2⤵
        • Executes dropped EXE
        PID:4372
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2144 -ip 2144
      1⤵
        PID:2084
      • C:\Users\Admin\AppData\Local\Temp\7zSCC73AF17\sotema_2.exe
        sotema_2.exe
        1⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Checks SCSI registry key(s)
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious behavior: MapViewOfSection
        PID:4404
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 4404 -s 412
          2⤵
          • Program crash
          PID:3080
      • C:\Users\Admin\AppData\Local\Temp\7zSCC73AF17\sotema_5.exe
        sotema_5.exe
        1⤵
        • Modifies Windows Defender Real-time Protection settings
        • Executes dropped EXE
        PID:4572
      • C:\Users\Admin\AppData\Local\Temp\7zSCC73AF17\sotema_3.exe
        sotema_3.exe
        1⤵
        • Executes dropped EXE
        PID:4960
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 4960 -s 1272
          2⤵
          • Program crash
          PID:2864
      • C:\Users\Admin\AppData\Local\Temp\7zSCC73AF17\sotema_1.exe
        sotema_1.exe
        1⤵
        • Checks computer location settings
        • Executes dropped EXE
        • Modifies registry class
        • Suspicious use of WriteProcessMemory
        PID:1496
        • C:\Windows\SysWOW64\rUNdlL32.eXe
          "C:\Windows\system32\rUNdlL32.eXe" "C:\Users\Admin\AppData\Local\Temp\axhub.dll",axhub
          2⤵
          • Loads dropped DLL
          PID:4724
          • C:\Windows\SysWOW64\WerFault.exe
            C:\Windows\SysWOW64\WerFault.exe -u -p 4724 -s 616
            3⤵
            • Program crash
            PID:1664
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -pss -s 484 -p 4724 -ip 4724
        1⤵
          PID:3856
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 4404 -ip 4404
          1⤵
            PID:4476
          • C:\Windows\SysWOW64\WerFault.exe
            C:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 4960 -ip 4960
            1⤵
              PID:5096

            Network

                  MITRE ATT&CK Enterprise v15

                  Replay Monitor

                  Loading Replay Monitor...

                  Downloads

                  libcurl.dll

                  • Path C:\Users\Admin\AppData\Local\Temp\7zSCC73AF17\libcurl.dll
                  • Size 218KB
                  • SHA256 0de53e7be51789adaec5294346220b20f793e7f8d153a3c110a92d658760697e
                  • MD5 SHA1 SHA512 SSDEEP

                  libcurlpp.dll

                  • Path C:\Users\Admin\AppData\Local\Temp\7zSCC73AF17\libcurlpp.dll
                  • Size 54KB
                  • SHA256 43e86d650a68f1f91fa2f4375aff2720e934aa78fa3d33e06363122bf5a9535f
                  • MD5 SHA1 SHA512 SSDEEP

                  libgcc_s_dw2-1.dll

                  • Path C:\Users\Admin\AppData\Local\Temp\7zSCC73AF17\libgcc_s_dw2-1.dll
                  • Size 113KB
                  • SHA256 59a466f77584438fc3abc0f43edc0fc99d41851726827a008841f05cfe12da7e
                  • MD5 SHA1 SHA512 SSDEEP

                  libstdc++-6.dll

                  • Path C:\Users\Admin\AppData\Local\Temp\7zSCC73AF17\libstdc++-6.dll
                  • Size 647KB
                  • SHA256 97de47068327bb822b33c7106f9cbb489480901a6749513ef5c31d229dcaca87
                  • MD5 SHA1 SHA512 SSDEEP

                  libwinpthread-1.dll

                  • Path C:\Users\Admin\AppData\Local\Temp\7zSCC73AF17\libwinpthread-1.dll
                  • Size 69KB
                  • SHA256 509cb1d1443b623a02562ac760bced540e327c65157ffa938a22f75e38155723
                  • MD5 SHA1 SHA512 SSDEEP

                  setup_install.exe

                  • Path C:\Users\Admin\AppData\Local\Temp\7zSCC73AF17\setup_install.exe
                  • Size 290KB
                  • SHA256 2051d0eb2aeec65a2699604355cea561461027ee6bbc886ce9a69f82abb11a21
                  • MD5 SHA1 SHA512 SSDEEP

                  sotema_1.txt

                  • Path C:\Users\Admin\AppData\Local\Temp\7zSCC73AF17\sotema_1.txt
                  • Size 381KB
                  • SHA256 cd6c695cdd6870aa4050e3685dd817c9a8b8ab65dafa294e69665cc14134380e
                  • MD5 SHA1 SHA512 SSDEEP

                  sotema_2.txt

                  • Path C:\Users\Admin\AppData\Local\Temp\7zSCC73AF17\sotema_2.txt
                  • Size 92KB
                  • SHA256 9ea6df972a2e02f1203d4c9846afe89d2bc5af6cf7ea9c213d3af3bc7916a21c
                  • MD5 SHA1 SHA512 SSDEEP

                  sotema_3.txt

                  • Path C:\Users\Admin\AppData\Local\Temp\7zSCC73AF17\sotema_3.txt
                  • Size 92KB
                  • SHA256 9976a1d0ef2cf4c48c19521059c722f54ec79eae7791059acf2cbbcf8d9d5670
                  • MD5 SHA1 SHA512 SSDEEP

                  fj4ghga23_fsa.txt

                  • Path C:\Users\Admin\AppData\Local\Temp\fj4ghga23_fsa.txt
                  • Size 1KB
                  • SHA256 10222946d40c8b0f46e2525133f0c80870c264b02522c7683ed97d4e2c7ce25f
                  • MD5 SHA1 SHA512

                  jfiag3g_gg.exe

                  • Path C:\Users\Admin\AppData\Local\Temp\jfiag3g_gg.exe
                  • Size 61KB
                  • SHA256 8b581869bf8944a8e0aa169adea2a4afe47434123da477132880aff6a5032181
                  • MD5 SHA1 SHA512 SSDEEP

                  egiejja

                  • Path C:\Users\Admin\AppData\Roaming\egiejja
                  • Size 346KB
                  • SHA256 d43979eb205824fed0c5c37b95d93d090268ecde76e1ba2cb6b67733b0592c62
                  • MD5 SHA1 SHA512 SSDEEP

                  sotema_6.tmp

                  • Path \??\c:\users\admin\appdata\local\temp\is-ieth7.tmp\sotema_6.tmp
                  • Size 382KB
                  • SHA256 8ad1d9b11fece5f11a4b11218f31e5039e87e149e5fac63ecbd01a8b61476d05
                  • MD5 SHA1 SHA512 SSDEEP

                  memory/208-149-0x0000000000400000-0x000000000046D000-memory.dmp

                  memory/208-72-0x0000000000400000-0x000000000046D000-memory.dmp

                  memory/208-187-0x0000000000400000-0x000000000046D000-memory.dmp

                  memory/2144-47-0x000000006B440000-0x000000006B4CF000-memory.dmp

                  memory/2144-54-0x000000006FE40000-0x000000006FFC6000-memory.dmp

                  memory/2144-117-0x000000006B440000-0x000000006B4CF000-memory.dmp

                  memory/2144-118-0x000000006EB40000-0x000000006EB63000-memory.dmp

                  memory/2144-121-0x000000006FE40000-0x000000006FFC6000-memory.dmp

                  memory/2144-115-0x0000000064940000-0x0000000064959000-memory.dmp

                  memory/2144-114-0x0000000000400000-0x000000000051E000-memory.dmp

                  memory/2144-30-0x0000000000400000-0x000000000051E000-memory.dmp

                  memory/2144-62-0x0000000000400000-0x000000000051E000-memory.dmp

                  memory/2144-61-0x0000000000400000-0x000000000051E000-memory.dmp

                  memory/2144-60-0x0000000000400000-0x000000000051E000-memory.dmp

                  memory/2144-59-0x0000000000400000-0x000000000051E000-memory.dmp

                  memory/2144-57-0x0000000000400000-0x000000000051E000-memory.dmp

                  memory/2144-44-0x000000006B280000-0x000000006B2A6000-memory.dmp

                  memory/2144-43-0x000000006B440000-0x000000006B4CF000-memory.dmp

                  memory/2144-48-0x0000000000EB0000-0x0000000000F3F000-memory.dmp

                  memory/2144-51-0x0000000064940000-0x0000000064959000-memory.dmp

                  memory/2144-58-0x0000000000400000-0x000000000051E000-memory.dmp

                  memory/2144-46-0x000000006B440000-0x000000006B4CF000-memory.dmp

                  memory/2144-56-0x000000006B280000-0x000000006B2A6000-memory.dmp

                  memory/2144-55-0x000000006B280000-0x000000006B2A6000-memory.dmp

                  memory/2144-116-0x000000006B280000-0x000000006B2A6000-memory.dmp

                  memory/2144-53-0x000000006FE40000-0x000000006FFC6000-memory.dmp

                  memory/2144-52-0x000000006FE40000-0x000000006FFC6000-memory.dmp

                  memory/2144-50-0x000000006FE40000-0x000000006FFC6000-memory.dmp

                  memory/2460-108-0x0000000000400000-0x000000000045B000-memory.dmp

                  memory/2460-111-0x0000000000400000-0x000000000045B000-memory.dmp

                  memory/3456-142-0x0000000002970000-0x0000000002986000-memory.dmp

                  memory/3864-151-0x0000000000400000-0x0000000000516000-memory.dmp

                  memory/3864-175-0x0000000000400000-0x0000000000516000-memory.dmp

                  memory/3864-92-0x0000000002130000-0x0000000002131000-memory.dmp

                  memory/3864-186-0x0000000000400000-0x0000000000516000-memory.dmp

                  memory/4372-163-0x0000000000400000-0x0000000000422000-memory.dmp

                  memory/4372-158-0x0000000000400000-0x0000000000422000-memory.dmp

                  memory/4404-145-0x0000000000400000-0x00000000008F5000-memory.dmp

                  memory/4404-128-0x0000000000A60000-0x0000000000A69000-memory.dmp

                  memory/4404-126-0x0000000000AD0000-0x0000000000BD0000-memory.dmp

                  memory/4404-132-0x0000000000400000-0x00000000008F5000-memory.dmp

                  memory/4960-153-0x0000000002610000-0x00000000026AD000-memory.dmp

                  memory/4960-134-0x0000000002610000-0x00000000026AD000-memory.dmp

                  memory/4960-135-0x0000000000400000-0x000000000094A000-memory.dmp

                  memory/4960-133-0x0000000000A20000-0x0000000000B20000-memory.dmp

                  memory/4960-150-0x0000000000400000-0x000000000094A000-memory.dmp