Analysis

  • max time kernel
    136s
  • max time network
    154s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220901-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
  • submitted
    02/10/2022, 15:14

General

  • Target
    tmp.exe
  • Size 1.4MB
  • Sample221002-sma2fsdefl
  • SHA256 ce87832b753df5480849c61df4e05bfd2bfbd72af88ad52093a54555f3d96f0e
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • Detect Neshta payload 25 IoCs
  • Modifies system executable filetype association 2 TTPs 1 IoCs
  • Neshta

    Malware from the neshta family is designed to infect itself into other files to spread itself and cause damage.

  • Downloads MZ/PE file
  • Executes dropped EXE 5 IoCs
  • Checks computer location settings 2 TTPs 2 IoCs

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

  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • AutoIT Executable 4 IoCs

    AutoIT scripts compiled to PE executables.

  • Drops file in Program Files directory 64 IoCs
  • Drops file in Windows directory 5 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies registry class 2 IoCs
  • Suspicious use of FindShellTrayWindow 19 IoCs
  • Suspicious use of SendNotifyMessage 19 IoCs
  • Suspicious use of WriteProcessMemory 13 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\tmp.exe
    "C:\Users\Admin\AppData\Local\Temp\tmp.exe"
    1⤵
    • Modifies system executable filetype association
    • Checks computer location settings
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:2248
    • C:\Users\Admin\AppData\Local\Temp\3582-490\tmp.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\tmp.exe"
      2⤵
      • Executes dropped EXE
      • Checks computer location settings
      • Modifies registry class
      • Suspicious use of WriteProcessMemory
      PID:4540
      • C:\Windows\svchost.com
        "C:\Windows\svchost.com" "C:\Users\Admin\AppData\Local\Temp\RarSFX0\1load.exe"
        3⤵
        • Executes dropped EXE
        • Drops file in Program Files directory
        • Drops file in Windows directory
        • Suspicious use of WriteProcessMemory
        PID:4116
        • C:\Users\Admin\AppData\Local\Temp\RarSFX0\1load.exe
          C:\Users\Admin\AppData\Local\Temp\RarSFX0\1load.exe
          4⤵
          • Executes dropped EXE
          • Suspicious use of FindShellTrayWindow
          • Suspicious use of SendNotifyMessage
          PID:2256
      • C:\Windows\svchost.com
        "C:\Windows\svchost.com" "C:\Users\Admin\AppData\Local\Temp\RarSFX0\1start.exe"
        3⤵
        • Executes dropped EXE
        • Drops file in Windows directory
        • Suspicious use of WriteProcessMemory
        PID:996
        • C:\Users\Admin\AppData\Local\Temp\RarSFX0\1start.exe
          C:\Users\Admin\AppData\Local\Temp\RarSFX0\1start.exe
          4⤵
          • Executes dropped EXE
          • Suspicious use of FindShellTrayWindow
          • Suspicious use of SendNotifyMessage
          PID:3220

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        ACROBR~1.EXE

        • Path C:\PROGRA~2\Adobe\ACROBA~1\Reader\ACROBR~1.EXE
        • Size 328KB
        • SHA256 888a1dd0033e5d758a4e731e3e55357de866e80d03b1b194375f714e1fd4351d
        • MD5 SHA1 SHA512 SSDEEP

        ACROTE~1.EXE

        • Path C:\PROGRA~2\Adobe\ACROBA~1\Reader\ACROTE~1.EXE
        • Size 86KB
        • SHA256 ded54d1fcca07b6bff2bc3b9a1131eac29ff1f836e5d7a7c5c325ec5abe96e29
        • MD5 SHA1 SHA512 SSDEEP

        ADelRCP.exe

        • Path C:\PROGRA~2\Adobe\ACROBA~1\Reader\ADelRCP.exe
        • Size 175KB
        • SHA256 3f00404dd591c2856e6f71bd78423ed47199902e0b85f228e6c4de72c59ddffe
        • MD5 SHA1 SHA512 SSDEEP

        RdrCEF.exe

        • Path C:\PROGRA~2\Adobe\ACROBA~1\Reader\AcroCEF\RdrCEF.exe
        • Size 9.4MB
        • SHA256 31da9632f5d25806b77b617d48da52a14afc574bbe1653120f97705284ea566c
        • MD5 SHA1 SHA512 SSDEEP

        arh.exe

        • Path C:\PROGRA~2\Adobe\ACROBA~1\Reader\arh.exe
        • Size 125KB
        • SHA256 fe44ca8d5050932851aa54c23133277e66db939501af58e5aeb7b67ec1dde7b5
        • MD5 SHA1 SHA512 SSDEEP

        64BITM~1.EXE

        • Path C:\PROGRA~2\Adobe\ACROBA~1\Reader\plug_ins\PI_BRO~1\64BITM~1.EXE
        • Size 278KB
        • SHA256 22a585c183e27b3c732028ff193733c2f9d03700a0e95e65c556b0592c43d880
        • MD5 SHA1 SHA512 SSDEEP

        MIA062~1.EXE

        • Path C:\PROGRA~2\MICROS~1\EDGEUP~1\13167~1.21\MIA062~1.EXE
        • Size 1.5MB
        • SHA256 cbe928e3cd3238367a841920f92a1ee6f991e6b44f75d23641aa8ea5ebcbcb6f
        • MD5 SHA1 SHA512 SSDEEP

        MICROS~1.EXE

        • Path C:\PROGRA~2\MICROS~1\EDGEUP~1\13167~1.21\MICROS~1.EXE
        • Size 281KB
        • SHA256 a29b9000b27bf21109832ae75918e5e804a9af6a882b74c325f03a82091a6f96
        • MD5 SHA1 SHA512 SSDEEP

        MICROS~2.EXE

        • Path C:\PROGRA~2\MICROS~1\EDGEUP~1\13167~1.21\MICROS~2.EXE
        • Size 288KB
        • SHA256 b40dac0e9e9b60d6ff5a695302674130ddc14300693dce379aba03fba7f5014c
        • MD5 SHA1 SHA512 SSDEEP

        MICROS~3.EXE

        • Path C:\PROGRA~2\MICROS~1\EDGEUP~1\13167~1.21\MICROS~3.EXE
        • Size 245KB
        • SHA256 499d822a22570d25050d8fdb3b98b2fe3d2d1b8926b8cbd17178ebc105fe3e05
        • MD5 SHA1 SHA512 SSDEEP

        MicrosoftEdgeUpdate.exe

        • Path C:\PROGRA~2\MICROS~1\EDGEUP~1\MicrosoftEdgeUpdate.exe
        • Size 250KB
        • SHA256 4d87b0eb331443b473c90650d31b893d00373ff88dcbcb3747f494407799af69
        • MD5 SHA1 SHA512 SSDEEP

        MSEDGE~1.EXE

        • Path C:\PROGRA~2\MICROS~1\Edge\APPLIC~1\920902~1.67\MSEDGE~1.EXE
        • Size 1.1MB
        • SHA256 34b8662d38e7d3d6394fa6c965d943d2c82ea06ba9d7a0af4f8e0571fb5a9c48
        • MD5 SHA1 SHA512 SSDEEP

        VC_RED~1.EXE

        • Path C:\PROGRA~3\PACKAG~1\{4D8DC~1\VC_RED~1.EXE
        • Size 714KB
        • SHA256 82a14caee30a4f86dd143015fc852220a36cc96cdbb9f65aaca87d80f2c43762
        • MD5 SHA1 SHA512 SSDEEP

        VCREDI~1.EXE

        • Path C:\PROGRA~3\PACKAG~1\{61087~1\VCREDI~1.EXE
        • Size 495KB
        • SHA256 45966655baaed42df92cd6d8094b4172c0e7a0320528b59cf63fca7c25d66e9c
        • MD5 SHA1 SHA512 SSDEEP

        VCREDI~1.EXE

        • Path C:\PROGRA~3\PACKAG~1\{EF6B0~1\VCREDI~1.EXE
        • Size 495KB
        • SHA256 d882f673ddf40a7ea6d89ce25e4ee55d94a5ef0b5403aa8d86656fd960d0e4ac
        • MD5 SHA1 SHA512 SSDEEP

        setup.exe

        • Path C:\Users\ALLUSE~1\Adobe\Setup\{AC76B~1\setup.exe
        • Size 534KB
        • SHA256 79538fa3a6cf33b989d43e7311de4d7b0e1a99b60964e3acc00fa3cb49ff8160
        • MD5 SHA1 SHA512 SSDEEP

        INTEGR~1.EXE

        • Path C:\Users\ALLUSE~1\MICROS~1\CLICKT~1\{9AC08~1\INTEGR~1.EXE
        • Size 6.7MB
        • SHA256 7d607fb69c69a72a5bf4305599279f46318312ce1082b6a34ac9100b8c7762ce
        • MD5 SHA1 SHA512 SSDEEP

        VCREDI~1.EXE

        • Path C:\Users\ALLUSE~1\PACKAG~1\{33D1F~1\VCREDI~1.EXE
        • Size 485KB
        • SHA256 8c35dcc975a5c7c687686a3970306452476d17a89787bc5bd3bf21b9de0d36a5
        • MD5 SHA1 SHA512 SSDEEP

        VC_RED~1.EXE

        • Path C:\Users\ALLUSE~1\PACKAG~1\{4D8DC~1\VC_RED~1.EXE
        • Size 714KB
        • SHA256 82a14caee30a4f86dd143015fc852220a36cc96cdbb9f65aaca87d80f2c43762
        • MD5 SHA1 SHA512 SSDEEP

        VC_RED~1.EXE

        • Path C:\Users\ALLUSE~1\PACKAG~1\{57A73~1\VC_RED~1.EXE
        • Size 674KB
        • SHA256 ccf37e88447a7afdb0ba4351b8c5606dbb05b984fb133194d71bcc00d7be4e36
        • MD5 SHA1 SHA512 SSDEEP

        VCREDI~1.EXE

        • Path C:\Users\ALLUSE~1\PACKAG~1\{CA675~1\VCREDI~1.EXE
        • Size 525KB
        • SHA256 e81e4630b01d181fb3116e9e874eedfe1a43472bfa6d83cc24f55e78721ddf86
        • MD5 SHA1 SHA512 SSDEEP

        tmp.exe

        • Path C:\Users\Admin\AppData\Local\Temp\3582-490\tmp.exe
        • Size 1.4MB
        • SHA256 9f8cac6f53db98190f793f42cc8d3d5923a7535a8393013ffa664c64910a2883
        • MD5 SHA1 SHA512 SSDEEP

        tmp.exe

        • Path C:\Users\Admin\AppData\Local\Temp\3582-490\tmp.exe
        • Size 1.4MB
        • SHA256 9f8cac6f53db98190f793f42cc8d3d5923a7535a8393013ffa664c64910a2883
        • MD5 SHA1 SHA512 SSDEEP

        1load.exe

        • Path C:\Users\Admin\AppData\Local\Temp\RarSFX0\1load.exe
        • Size 1014KB
        • SHA256 30962201c8fed0322635f8156d3ae6a157123e7fcc5576b1126a90076eac5bfe
        • MD5 SHA1 SHA512 SSDEEP

        1load.exe

        • Path C:\Users\Admin\AppData\Local\Temp\RarSFX0\1load.exe
        • Size 1014KB
        • SHA256 30962201c8fed0322635f8156d3ae6a157123e7fcc5576b1126a90076eac5bfe
        • MD5 SHA1 SHA512 SSDEEP

        1start.exe

        • Path C:\Users\Admin\AppData\Local\Temp\RarSFX0\1start.exe
        • Size 1014KB
        • SHA256 fdf5d9f39cd3d99052587e9a5c5665715d239e379cef5b37ae6b5f027e26e95a
        • MD5 SHA1 SHA512 SSDEEP

        1start.exe

        • Path C:\Users\Admin\AppData\Local\Temp\RarSFX0\1start.exe
        • Size 1014KB
        • SHA256 fdf5d9f39cd3d99052587e9a5c5665715d239e379cef5b37ae6b5f027e26e95a
        • MD5 SHA1 SHA512 SSDEEP

        tmp5023.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\tmp5023.tmp
        • Size 8B
        • SHA256 77a39ead9222388cde518f2f0bd7ae11ce5307c8200055235e75f22b3254a1e1
        • MD5 SHA1 SHA512

        tmp5023.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\tmp5023.tmp
        • Size 8B
        • SHA256 77a39ead9222388cde518f2f0bd7ae11ce5307c8200055235e75f22b3254a1e1
        • MD5 SHA1 SHA512

        directx.sys

        • Path C:\Windows\directx.sys
        • Size 54B
        • SHA256 1828a4ce95ed9348313d79a47f0c8f894d985ff6de570e18051a2e7fea4b6a09
        • MD5 SHA1 SHA512

        svchost.com

        • Path C:\Windows\svchost.com
        • Size 40KB
        • SHA256 e3f621b3384c43c9d56628df3f1384f0895dfb776aaaca811fe94cb20c26ac25
        • MD5 SHA1 SHA512 SSDEEP

        svchost.com

        • Path C:\Windows\svchost.com
        • Size 40KB
        • SHA256 e3f621b3384c43c9d56628df3f1384f0895dfb776aaaca811fe94cb20c26ac25
        • MD5 SHA1 SHA512 SSDEEP

        svchost.com

        • Path C:\Windows\svchost.com
        • Size 40KB
        • SHA256 e3f621b3384c43c9d56628df3f1384f0895dfb776aaaca811fe94cb20c26ac25
        • MD5 SHA1 SHA512 SSDEEP

        OFFICE~1.EXE

        • Path C:\odt\OFFICE~1.EXE
        • Size 5.1MB
        • SHA256 2a1ed24be7e3859b46ec3ebc316789ead5f12055853f86a9656e04b4bb771842
        • MD5 SHA1 SHA512 SSDEEP