Analysis

  • max time kernel
    79s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    07/01/2024, 18:29

General

  • Target
    5774f205b3abcd5adc225b26b5ce546c2e7eb3490d03aa13c15234370dc42e27.exe
  • Size 2.1MB
  • Sample240107-w44xmscfc5
  • SHA256 5774f205b3abcd5adc225b26b5ce546c2e7eb3490d03aa13c15234370dc42e27
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • vidar

Version
  • 40.4

Botnet
  • 706

C2
  • https://romkaxarit.tumblr.com/

Attributes
  • profile_id

    706

Extracted

Family
  • nullmixer

C2
  • http://hsiens.xyz/

Signatures

  • NullMixer

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

  • Vidar

    Vidar is an infostealer based on Arkei stealer.

  • Vidar Stealer 4 IoCs
  • ASPack v2.12-2.42 3 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 8 IoCs
  • Loads dropped DLL 8 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 49 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\5774f205b3abcd5adc225b26b5ce546c2e7eb3490d03aa13c15234370dc42e27.exe
    "C:\Users\Admin\AppData\Local\Temp\5774f205b3abcd5adc225b26b5ce546c2e7eb3490d03aa13c15234370dc42e27.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4348
    • C:\Users\Admin\AppData\Local\Temp\setup_installer.exe
      "C:\Users\Admin\AppData\Local\Temp\setup_installer.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • Suspicious use of WriteProcessMemory
      PID:460
      • C:\Users\Admin\AppData\Local\Temp\7zSCC135337\setup_install.exe
        "C:\Users\Admin\AppData\Local\Temp\7zSCC135337\setup_install.exe"
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Suspicious use of WriteProcessMemory
        PID:4660
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 4660 -s 548
          4⤵
          • Program crash
          PID:2848
        • C:\Windows\SysWOW64\cmd.exe
          C:\Windows\system32\cmd.exe /c APPNAME6.exe
          4⤵
            PID:1948
          • C:\Windows\SysWOW64\cmd.exe
            C:\Windows\system32\cmd.exe /c APPNAME7.exe
            4⤵
              PID:1996
            • C:\Windows\SysWOW64\cmd.exe
              C:\Windows\system32\cmd.exe /c Fri223c16842efe.exe
              4⤵
              • Suspicious use of WriteProcessMemory
              PID:4512
            • C:\Windows\SysWOW64\cmd.exe
              C:\Windows\system32\cmd.exe /c Fri22a50299249a2ecb.exe
              4⤵
              • Suspicious use of WriteProcessMemory
              PID:3820
            • C:\Windows\SysWOW64\cmd.exe
              C:\Windows\system32\cmd.exe /c Fri22fc045ba83b2730a.exe
              4⤵
              • Suspicious use of WriteProcessMemory
              PID:4028
            • C:\Windows\SysWOW64\cmd.exe
              C:\Windows\system32\cmd.exe /c Fri2284aa8f458.exe
              4⤵
              • Suspicious use of WriteProcessMemory
              PID:1816
            • C:\Windows\SysWOW64\cmd.exe
              C:\Windows\system32\cmd.exe /c Fri2288d350ca9.exe
              4⤵
              • Suspicious use of WriteProcessMemory
              PID:3452
            • C:\Windows\SysWOW64\cmd.exe
              C:\Windows\system32\cmd.exe /c powershell -inputformat none -outputformat none -NonInteractive -Command Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp"
              4⤵
              • Suspicious use of WriteProcessMemory
              PID:5052
      • C:\Users\Admin\AppData\Local\Temp\7zSCC135337\Fri223c16842efe.exe
        Fri223c16842efe.exe
        1⤵
        • Executes dropped EXE
        • Suspicious use of WriteProcessMemory
        PID:3900
        • C:\Users\Admin\AppData\Local\Temp\is-3SQ1C.tmp\Fri223c16842efe.tmp
          "C:\Users\Admin\AppData\Local\Temp\is-3SQ1C.tmp\Fri223c16842efe.tmp" /SL5="$D0064,506086,422400,C:\Users\Admin\AppData\Local\Temp\7zSCC135337\Fri223c16842efe.exe"
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1436
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 4660 -ip 4660
        1⤵
          PID:1652
        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
          powershell -inputformat none -outputformat none -NonInteractive -Command Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp"
          1⤵
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:1080
        • C:\Users\Admin\AppData\Local\Temp\7zSCC135337\Fri22a50299249a2ecb.exe
          Fri22a50299249a2ecb.exe
          1⤵
          • Executes dropped EXE
          PID:2384
          • C:\Windows\SysWOW64\WerFault.exe
            C:\Windows\SysWOW64\WerFault.exe -u -p 2384 -s 1028
            2⤵
            • Program crash
            PID:3744
        • C:\Users\Admin\AppData\Local\Temp\7zSCC135337\Fri22fc045ba83b2730a.exe
          Fri22fc045ba83b2730a.exe
          1⤵
          • Executes dropped EXE
          • Suspicious use of AdjustPrivilegeToken
          PID:4692
        • C:\Users\Admin\AppData\Local\Temp\7zSCC135337\Fri2284aa8f458.exe
          Fri2284aa8f458.exe
          1⤵
          • Executes dropped EXE
          PID:1900
        • C:\Users\Admin\AppData\Local\Temp\7zSCC135337\Fri2288d350ca9.exe
          Fri2288d350ca9.exe
          1⤵
          • Executes dropped EXE
          • Suspicious use of AdjustPrivilegeToken
          PID:4728
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -pss -s 356 -p 2384 -ip 2384
          1⤵
            PID:640

          Network

                MITRE ATT&CK Enterprise v15

                Replay Monitor

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                Downloads

                Fri223c16842efe.exe

                • Path C:\Users\Admin\AppData\Local\Temp\7zSCC135337\Fri223c16842efe.exe
                • Size 757KB
                • SHA256 a7ac72fffdad0067658b52af3ad260c0b41b9e20876230743910b8715a74ea48
                • MD5 SHA1 SHA512 SSDEEP

                Fri2284aa8f458.exe

                • Path C:\Users\Admin\AppData\Local\Temp\7zSCC135337\Fri2284aa8f458.exe
                • Size 97KB
                • SHA256 d85a27512bdc5d2a24e0273813e495d7992631b86c70d401b19f4b1265750d3d
                • MD5 SHA1 SHA512 SSDEEP

                Fri2288d350ca9.exe

                • Path C:\Users\Admin\AppData\Local\Temp\7zSCC135337\Fri2288d350ca9.exe
                • Size 8KB
                • SHA256 9dc77ea1abd72256c2cf906cf433610f48661779a1416b8546d4f9af09f26a5a
                • MD5 SHA1 SHA512 SSDEEP

                Fri22a50299249a2ecb.exe

                • Path C:\Users\Admin\AppData\Local\Temp\7zSCC135337\Fri22a50299249a2ecb.exe
                • Size 691KB
                • SHA256 5b5842bcf355c271f11574cae7934528aced496ceaffa41db6891a296598b225
                • MD5 SHA1 SHA512 SSDEEP

                Fri22fc045ba83b2730a.exe

                • Path C:\Users\Admin\AppData\Local\Temp\7zSCC135337\Fri22fc045ba83b2730a.exe
                • Size 137KB
                • SHA256 f9fa123d33be47a6b279a783b20671139c8a96dfcf8f8c04c08a8432f8ec9f04
                • MD5 SHA1 SHA512 SSDEEP

                libcurl.dll

                • Path C:\Users\Admin\AppData\Local\Temp\7zSCC135337\libcurl.dll
                • Size 218KB
                • SHA256 0de53e7be51789adaec5294346220b20f793e7f8d153a3c110a92d658760697e
                • MD5 SHA1 SHA512 SSDEEP

                libcurlpp.dll

                • Path C:\Users\Admin\AppData\Local\Temp\7zSCC135337\libcurlpp.dll
                • Size 54KB
                • SHA256 43e86d650a68f1f91fa2f4375aff2720e934aa78fa3d33e06363122bf5a9535f
                • MD5 SHA1 SHA512 SSDEEP

                libgcc_s_dw2-1.dll

                • Path C:\Users\Admin\AppData\Local\Temp\7zSCC135337\libgcc_s_dw2-1.dll
                • Size 113KB
                • SHA256 59a466f77584438fc3abc0f43edc0fc99d41851726827a008841f05cfe12da7e
                • MD5 SHA1 SHA512 SSDEEP

                libstdc++-6.dll

                • Path C:\Users\Admin\AppData\Local\Temp\7zSCC135337\libstdc++-6.dll
                • Size 647KB
                • SHA256 97de47068327bb822b33c7106f9cbb489480901a6749513ef5c31d229dcaca87
                • MD5 SHA1 SHA512 SSDEEP

                libwinpthread-1.dll

                • Path C:\Users\Admin\AppData\Local\Temp\7zSCC135337\libwinpthread-1.dll
                • Size 69KB
                • SHA256 509cb1d1443b623a02562ac760bced540e327c65157ffa938a22f75e38155723
                • MD5 SHA1 SHA512 SSDEEP

                setup_install.exe

                • Path C:\Users\Admin\AppData\Local\Temp\7zSCC135337\setup_install.exe
                • Size 2.1MB
                • SHA256 f14930cad4802af5f61f7f20971c718369e2abad0ebde1a78cee28f35a3f673e
                • MD5 SHA1 SHA512 SSDEEP

                __PSScriptPolicyTest_ll0c5h5e.pgo.ps1

                • Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_ll0c5h5e.pgo.ps1
                • Size 60B
                • SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
                • MD5 SHA1 SHA512

                Fri223c16842efe.tmp

                • Path C:\Users\Admin\AppData\Local\Temp\is-3SQ1C.tmp\Fri223c16842efe.tmp
                • Size 1.0MB
                • SHA256 b32cbc6b83581d4dc39aa7106e983e693c5df0e0a28f146f0a37bc0c23442047
                • MD5 SHA1 SHA512 SSDEEP

                idp.dll

                • Path C:\Users\Admin\AppData\Local\Temp\is-7I3AD.tmp\idp.dll
                • Size 216KB
                • SHA256 203d7b61eac96de865ab3b586160e72c78d93ab5532b13d50ef27174126fd006
                • MD5 SHA1 SHA512 SSDEEP

                setup_installer.exe

                • Path C:\Users\Admin\AppData\Local\Temp\setup_installer.exe
                • Size 896KB
                • SHA256 c2b6021ee3f382d027dcec9380f3737b7ec8a7a9f7bb026d4eb31b9bc3a516a3
                • MD5 SHA1 SHA512 SSDEEP

                setup_installer.exe

                • Path C:\Users\Admin\AppData\Local\Temp\setup_installer.exe
                • Size 2.1MB
                • SHA256 0850733525527bb9fdd78a83125297c42eb3935dcf36b0f86a26e67105300589
                • MD5 SHA1 SHA512 SSDEEP

                memory/1080-102-0x0000000002D80000-0x0000000002D90000-memory.dmp

                memory/1080-171-0x0000000007880000-0x000000000789A000-memory.dmp

                memory/1080-144-0x00000000061C0000-0x00000000061DE000-memory.dmp

                memory/1080-167-0x00000000077C0000-0x0000000007856000-memory.dmp

                memory/1080-169-0x0000000007780000-0x000000000778E000-memory.dmp

                memory/1080-166-0x00000000075D0000-0x00000000075DA000-memory.dmp

                memory/1080-165-0x0000000002D80000-0x0000000002D90000-memory.dmp

                memory/1080-145-0x0000000006290000-0x00000000062DC000-memory.dmp

                memory/1080-100-0x0000000072BE0000-0x0000000073390000-memory.dmp

                memory/1080-175-0x0000000072BE0000-0x0000000073390000-memory.dmp

                memory/1080-103-0x0000000002D80000-0x0000000002D90000-memory.dmp

                memory/1080-104-0x00000000053E0000-0x0000000005A08000-memory.dmp

                memory/1080-147-0x0000000072BE0000-0x0000000073390000-memory.dmp

                memory/1080-93-0x0000000002C40000-0x0000000002C76000-memory.dmp

                memory/1080-170-0x0000000007790000-0x00000000077A4000-memory.dmp

                memory/1080-148-0x0000000002D80000-0x0000000002D90000-memory.dmp

                memory/1080-161-0x00000000067A0000-0x00000000067BE000-memory.dmp

                memory/1080-151-0x0000000074070000-0x00000000740BC000-memory.dmp

                memory/1080-162-0x00000000071F0000-0x0000000007293000-memory.dmp

                memory/1080-168-0x0000000007750000-0x0000000007761000-memory.dmp

                memory/1080-113-0x0000000005260000-0x0000000005282000-memory.dmp

                memory/1080-115-0x0000000005BF0000-0x0000000005C56000-memory.dmp

                memory/1080-150-0x00000000067E0000-0x0000000006812000-memory.dmp

                memory/1080-114-0x0000000005B80000-0x0000000005BE6000-memory.dmp

                memory/1080-172-0x0000000007870000-0x0000000007878000-memory.dmp

                memory/1080-126-0x0000000005C60000-0x0000000005FB4000-memory.dmp

                memory/1080-164-0x0000000007530000-0x000000000754A000-memory.dmp

                memory/1080-163-0x0000000007B70000-0x00000000081EA000-memory.dmp

                memory/1080-149-0x000000007F1D0000-0x000000007F1E0000-memory.dmp

                memory/1436-110-0x0000000000400000-0x0000000000516000-memory.dmp

                memory/1436-101-0x00000000005F0000-0x00000000005F1000-memory.dmp

                memory/2384-116-0x0000000000400000-0x0000000002BB8000-memory.dmp

                memory/2384-108-0x0000000002C60000-0x0000000002D60000-memory.dmp

                memory/2384-109-0x0000000004810000-0x00000000048E3000-memory.dmp

                memory/2384-135-0x0000000000400000-0x0000000002BB8000-memory.dmp

                memory/2384-177-0x0000000002C60000-0x0000000002D60000-memory.dmp

                memory/2384-178-0x0000000004810000-0x00000000048E3000-memory.dmp

                memory/3900-112-0x0000000000400000-0x000000000046D000-memory.dmp

                memory/3900-79-0x0000000000400000-0x000000000046D000-memory.dmp

                memory/3900-86-0x0000000000400000-0x000000000046D000-memory.dmp

                memory/4660-141-0x000000006B440000-0x000000006B4CF000-memory.dmp

                memory/4660-55-0x000000006B440000-0x000000006B4CF000-memory.dmp

                memory/4660-132-0x000000006B440000-0x000000006B4CF000-memory.dmp

                memory/4660-131-0x000000006B280000-0x000000006B2A6000-memory.dmp

                memory/4660-134-0x000000006FE40000-0x000000006FFC6000-memory.dmp

                memory/4660-56-0x000000006B440000-0x000000006B4CF000-memory.dmp

                memory/4660-138-0x0000000000400000-0x000000000051B000-memory.dmp

                memory/4660-143-0x000000006FE40000-0x000000006FFC6000-memory.dmp

                memory/4660-142-0x000000006EB40000-0x000000006EB63000-memory.dmp

                memory/4660-129-0x0000000000400000-0x000000000051B000-memory.dmp

                memory/4660-140-0x000000006B280000-0x000000006B2A6000-memory.dmp

                memory/4660-59-0x0000000064940000-0x0000000064959000-memory.dmp

                memory/4660-127-0x0000000064940000-0x0000000064959000-memory.dmp

                memory/4660-139-0x0000000064940000-0x0000000064959000-memory.dmp

                memory/4660-62-0x000000006FE40000-0x000000006FFC6000-memory.dmp

                memory/4660-50-0x000000006B280000-0x000000006B2A6000-memory.dmp

                memory/4660-54-0x000000006B440000-0x000000006B4CF000-memory.dmp

                memory/4660-133-0x000000006EB40000-0x000000006EB63000-memory.dmp

                memory/4660-57-0x00000000007B0000-0x000000000083F000-memory.dmp

                memory/4660-58-0x000000006B440000-0x000000006B4CF000-memory.dmp

                memory/4660-60-0x000000006FE40000-0x000000006FFC6000-memory.dmp

                memory/4660-63-0x000000006FE40000-0x000000006FFC6000-memory.dmp

                memory/4660-64-0x000000006FE40000-0x000000006FFC6000-memory.dmp

                memory/4660-65-0x000000006B280000-0x000000006B2A6000-memory.dmp

                memory/4660-66-0x000000006B280000-0x000000006B2A6000-memory.dmp

                memory/4692-88-0x00007FF9A8200000-0x00007FF9A8CC1000-memory.dmp

                memory/4692-85-0x00000000015F0000-0x0000000001610000-memory.dmp

                memory/4692-78-0x0000000000DF0000-0x0000000000E1C000-memory.dmp

                memory/4692-90-0x0000000001630000-0x0000000001640000-memory.dmp

                memory/4692-137-0x00007FF9A8200000-0x00007FF9A8CC1000-memory.dmp

                memory/4728-84-0x0000000000AB0000-0x0000000000AC0000-memory.dmp

                memory/4728-82-0x00007FF9A8200000-0x00007FF9A8CC1000-memory.dmp

                memory/4728-76-0x00000000004E0000-0x00000000004E8000-memory.dmp

                memory/4728-146-0x0000000000AB0000-0x0000000000AC0000-memory.dmp

                memory/4728-128-0x00007FF9A8200000-0x00007FF9A8CC1000-memory.dmp