Analysis

  • max time kernel
    300s
  • max time network
    301s
  • platform
    windows10-1703_x64
  • resource
    win10-20230915-en
  • resource tags

    arch:x64arch:x86image:win10-20230915-enlocale:en-usos:windows10-1703-x64system
  • submitted
    25/09/2023, 01:39

General

  • Target

    821214e489c8c2072bd1c9aae9e3e35979743876da47514dadbf751f5f547c89.exe

  • Size

    239KB

  • MD5

    a79056e7d41cb50cd9dcfbc6cdfbc4f0

  • SHA1

    0066042afccac73edff4c63d2719c752a835cb7a

  • SHA256

    821214e489c8c2072bd1c9aae9e3e35979743876da47514dadbf751f5f547c89

  • SHA512

    1174f42bfb2f0f51536c5cce521538e4c641589daaf42937f9967be72dfa8de0d91395d3e55947cf607d0fb875efc6485060a49141c746fed853c53d42b7c5cb

  • SSDEEP

    6144:/146fuYXChoQTjlFgLuCY1dRuAON4G/w8y0:/CYzXChdTbv1bu7/w8y

Malware Config

Extracted

Family

smokeloader

Version

2022

C2

http://77.91.68.29/fks/

rc4.i32
rc4.i32

Signatures

  • Detected google phishing page
  • SmokeLoader

    Modular backdoor trojan in use since 2014.

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Suspicious use of SetThreadContext 1 IoCs
  • Drops file in Windows directory 7 IoCs
  • Program crash 1 IoCs
  • Checks SCSI registry key(s) 3 TTPs 3 IoCs

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

  • Modifies Internet Explorer settings 1 TTPs 2 IoCs
  • Modifies registry class 64 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: MapViewOfSection 11 IoCs
  • Suspicious use of AdjustPrivilegeToken 48 IoCs
  • Suspicious use of SetWindowsHookEx 4 IoCs
  • Suspicious use of WriteProcessMemory 26 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\821214e489c8c2072bd1c9aae9e3e35979743876da47514dadbf751f5f547c89.exe
    "C:\Users\Admin\AppData\Local\Temp\821214e489c8c2072bd1c9aae9e3e35979743876da47514dadbf751f5f547c89.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:3712
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe"
      2⤵
      • Checks SCSI registry key(s)
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      PID:3880
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 3712 -s 232
      2⤵
      • Program crash
      PID:4948
  • C:\Windows\system32\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\14E.bat" "
    1⤵
    • Checks computer location settings
    PID:1672
  • C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdge.exe
    "C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdge.exe" -ServerName:MicrosoftEdge.AppXdnhjhccw3zf0j06tkg3jtqr00qdm0khc.mca
    1⤵
    • Drops file in Windows directory
    • Modifies registry class
    • Suspicious use of SetWindowsHookEx
    PID:1508
  • C:\Windows\system32\browser_broker.exe
    C:\Windows\system32\browser_broker.exe -Embedding
    1⤵
    • Modifies Internet Explorer settings
    PID:3636
  • C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdgeCP.exe
    "C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdgeCP.exe" -ServerName:ContentProcess.AppX6z3cwk4fvgady6zya12j1cw28d228a7k.mca
    1⤵
    • Modifies registry class
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2176
  • C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdgeCP.exe
    "C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdgeCP.exe" -ServerName:ContentProcess.AppX6z3cwk4fvgady6zya12j1cw28d228a7k.mca
    1⤵
    • Drops file in Windows directory
    • Modifies Internet Explorer settings
    • Modifies registry class
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of SetWindowsHookEx
    PID:2860
  • C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdgeCP.exe
    "C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdgeCP.exe" -ServerName:ContentProcess.AppX6z3cwk4fvgady6zya12j1cw28d228a7k.mca
    1⤵
    • Drops file in Windows directory
    • Modifies registry class
    PID:2964
  • C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdgeCP.exe
    "C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdgeCP.exe" -ServerName:ContentProcess.AppX6z3cwk4fvgady6zya12j1cw28d228a7k.mca
    1⤵
    • Drops file in Windows directory
    • Modifies registry class
    PID:532
  • C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdgeCP.exe
    "C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdgeCP.exe" -ServerName:ContentProcess.AppX6z3cwk4fvgady6zya12j1cw28d228a7k.mca
    1⤵
    • Drops file in Windows directory
    • Modifies registry class
    PID:4644
  • C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdgeCP.exe
    "C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdgeCP.exe" -ServerName:ContentProcess.AppX6z3cwk4fvgady6zya12j1cw28d228a7k.mca
    1⤵
    • Modifies registry class
    • Suspicious use of AdjustPrivilegeToken
    PID:4760
  • C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdgeCP.exe
    "C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdgeCP.exe" -ServerName:ContentProcess.AppX6z3cwk4fvgady6zya12j1cw28d228a7k.mca
    1⤵
    • Drops file in Windows directory
    • Modifies registry class
    PID:4440
  • C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdgeCP.exe
    "C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdgeCP.exe" -ServerName:ContentProcess.AppX6z3cwk4fvgady6zya12j1cw28d228a7k.mca
    1⤵
    • Modifies registry class
    PID:3424

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\2RZQZMR9\edgecompatviewlist[1].xml

          Filesize

          74KB

          MD5

          d4fc49dc14f63895d997fa4940f24378

          SHA1

          3efb1437a7c5e46034147cbbc8db017c69d02c31

          SHA256

          853d2f4eb81c9fdcea2ee079f6faf98214b111b77cdf68709b38989d123890f1

          SHA512

          cc60d79b4afe5007634ac21dc4bc92081880be4c0d798a1735b63b27e936c02f399964f744dc73711987f01e8a1064b02a4867dd6cac27538e5fbe275cc61e0a

        • C:\Users\Admin\AppData\Local\Packages\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\AC\MicrosoftEdge\Cache\045KAQ4L\B8BxsscfVBr[1].ico

          Filesize

          1KB

          MD5

          e508eca3eafcc1fc2d7f19bafb29e06b

          SHA1

          a62fc3c2a027870d99aedc241e7d5babba9a891f

          SHA256

          e6d1d77403cd9f14fd2377d07e84350cfe768e3353e402bf42ebdc8593a58c9a

          SHA512

          49e3f31fd73e52ba274db9c7d306cc188e09c3ae683827f420fbb17534d197a503460e7ec2f1af46065f8d0b33f37400659bfa2ae165e502f97a8150e184a38c

        • C:\Users\Admin\AppData\Local\Packages\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\AC\MicrosoftEdge\Cache\15GBOP6L\suggestions[1].en-US

          Filesize

          17KB

          MD5

          5a34cb996293fde2cb7a4ac89587393a

          SHA1

          3c96c993500690d1a77873cd62bc639b3a10653f

          SHA256

          c6a5377cbc07eece33790cfc70572e12c7a48ad8296be25c0cc805a1f384dbad

          SHA512

          e1b7d0107733f81937415104e70f68b1be6fd0ca65dccf4ff72637943d44278d3a77f704aedff59d2dbc0d56a609b2590c8ec0dd6bc48ab30f1dad0c07a0a3ee

        • C:\Users\Admin\AppData\Local\Packages\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\AC\Microsoft\CryptnetUrlCache\Content\57C8EDB95DF3F0AD4EE2DC2B8CFD4157

          Filesize

          4KB

          MD5

          24be8a92460b5b7a555b1da559296958

          SHA1

          94147054e8a04e82fea1c185af30c7c90b194064

          SHA256

          77a3cfe6b7eb676af438d5de88c7efcb6abcc494e0b65da90201969e6d79b2a3

          SHA512

          ed8ef0453e050392c430fdcf556249f679570c130decd18057e077471a45ab0bc0fba513cb2d4d1c61f3d1935318113b3733dec2bc7828a169b18a1081e609a0

        • C:\Users\Admin\AppData\Local\Packages\microsoft.microsoftedge_8wekyb3d8bbwe\AC\#!001\MicrosoftEdge\Cookies\KFQB8FFY.cookie

          Filesize

          132B

          MD5

          86be67e8d5074cf624f19d119f8207a9

          SHA1

          41cf7df2385e0d509dd9094c1424624ef175bb6e

          SHA256

          0fc7c41e5af5e19e34c788837bd5d4939b9ba8ae9feb78ededf46547e272652e

          SHA512

          9d5aa4b2c38c74efeab26e87d95977489e46be38aea6056ffbcf6eaeb854ebba35fba67fcbd1102187caaa84ce19682b7ce466b22fa3b6af61c7ac011d34a547

        • C:\Users\Admin\AppData\Local\Packages\microsoft.microsoftedge_8wekyb3d8bbwe\AC\#!001\Microsoft\CryptnetUrlCache\Content\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA

          Filesize

          1KB

          MD5

          b5eda74305a01c41450e0d12777199e1

          SHA1

          36162e9e8c3a69b237d317f7c300f11927a37c12

          SHA256

          6e5c17b2b4e22fa800baa0eaf0b76ce73005e463b915503e8bca92223b9cf594

          SHA512

          f96b2ea451f4ceef082e1289a7f1e160580f5a8d515eaf2b4df0d8d818c34355c17538806f873fba07118b5c937d8c3172721ee03e3d16126e07c0db5faf16f3

        • C:\Users\Admin\AppData\Local\Packages\microsoft.microsoftedge_8wekyb3d8bbwe\AC\#!001\Microsoft\CryptnetUrlCache\Content\57C8EDB95DF3F0AD4EE2DC2B8CFD4157

          Filesize

          4KB

          MD5

          24be8a92460b5b7a555b1da559296958

          SHA1

          94147054e8a04e82fea1c185af30c7c90b194064

          SHA256

          77a3cfe6b7eb676af438d5de88c7efcb6abcc494e0b65da90201969e6d79b2a3

          SHA512

          ed8ef0453e050392c430fdcf556249f679570c130decd18057e077471a45ab0bc0fba513cb2d4d1c61f3d1935318113b3733dec2bc7828a169b18a1081e609a0

        • C:\Users\Admin\AppData\Local\Packages\microsoft.microsoftedge_8wekyb3d8bbwe\AC\#!001\Microsoft\CryptnetUrlCache\Content\CAF4703619713E3F18D8A9D5D88D6288_A7725538C46DE2D0088EE44974E2CEBA

          Filesize

          724B

          MD5

          ac89a852c2aaa3d389b2d2dd312ad367

          SHA1

          8f421dd6493c61dbda6b839e2debb7b50a20c930

          SHA256

          0b720e19270c672f9b6e0ec40b468ac49376807de08a814573fe038779534f45

          SHA512

          c6a88f33688cc0c287f04005e07d5b5e4a8721d204aa429f93ade2a56aeb86e05d89a8f7a44c1e93359a185a4c5f418240c6cdbc5a21314226681c744cf37f36

        • C:\Users\Admin\AppData\Local\Packages\microsoft.microsoftedge_8wekyb3d8bbwe\AC\#!001\Microsoft\CryptnetUrlCache\Content\F2DDCD2B5F37625B82E81F4976CEE400_87DCDABBB68171FA19C9A78DBA85E190

          Filesize

          471B

          MD5

          3b7403306365b481a905b872a4a8fe8d

          SHA1

          848d8b54a1b0fa0f473fe13bbabcb7872c0a6067

          SHA256

          f7ffcd2b2deb0aafb5ab3eca136e1bfa6560686bf31f6982afeb0535dfd70bd7

          SHA512

          bb40f31f256d4635c9ef00ef2eb7f6d959a262e55e8028d2d009073b74979900672073db15b2e3130b551dfe3b770863251940fa13c49375b8e18c5be24fb2a9

        • C:\Users\Admin\AppData\Local\Packages\microsoft.microsoftedge_8wekyb3d8bbwe\AC\#!001\Microsoft\CryptnetUrlCache\MetaData\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA

          Filesize

          410B

          MD5

          036bc08bb530042e4735b12881f91feb

          SHA1

          6dd40023a7572b16dd60eb9dc9e3b55686d3ab11

          SHA256

          645f16690c7f71c7f3093d0a2341ee35708eccd14d9e34f1a9027e0308f65330

          SHA512

          d0512330581aa555b5fd9550572334ed1990ce14aa8002001a35e982189dc1dff5cb6520a33f4eb8cf29e602146ec01950ccf4b4b8862bef6933b5fd12a57d44

        • C:\Users\Admin\AppData\Local\Packages\microsoft.microsoftedge_8wekyb3d8bbwe\AC\#!001\Microsoft\CryptnetUrlCache\MetaData\57C8EDB95DF3F0AD4EE2DC2B8CFD4157

          Filesize

          342B

          MD5

          7c73a4ebbd833ad986626458592acc26

          SHA1

          2e5694afa5fe2f94eb87bcd3d6fb764a1eb5b9e6

          SHA256

          5d1c33017aa714c5716269114018a6abac6f073e36ccae6f362569edc018b41d

          SHA512

          a0f9f84f3a27b834802c50f984c92856d291600a22990d41480b1a54063cc72035570a7f5fd75e76f923e4affaf5bbc980ab47e4608987f04b643ff20fbe0af3

        • C:\Users\Admin\AppData\Local\Packages\microsoft.microsoftedge_8wekyb3d8bbwe\AC\#!001\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_A7725538C46DE2D0088EE44974E2CEBA

          Filesize

          392B

          MD5

          047542ae90a89ab5535c0798a799eb3d

          SHA1

          28d6a04785dfb37c46be86fc7198f7bf3618810b

          SHA256

          d722cd33a950074fc94bb895aeae6c6cab3eca43fd70fd42ad430291efa6581e

          SHA512

          c88af35a8f915782043c053162a7c2f476ddc98f51c0ef2c1e82d644a3f1073c5ae999782cb95f5cc48b1097fa2dbb5fb67a714b756fc26635c0317acdeb756a

        • C:\Users\Admin\AppData\Local\Packages\microsoft.microsoftedge_8wekyb3d8bbwe\AC\#!001\Microsoft\CryptnetUrlCache\MetaData\F2DDCD2B5F37625B82E81F4976CEE400_87DCDABBB68171FA19C9A78DBA85E190

          Filesize

          406B

          MD5

          66573deb2148aaf1be6431734559a03f

          SHA1

          54a1c085b1d190026fe57aa4f90e3cca0f1efe73

          SHA256

          967622fdc53394e5c18b7d4608cb14e4f1e6925a3ab62ab6f20e026b6aa51149

          SHA512

          78cf74acfb36524f9b96d771621cec3bb0eeca28ffe0d8f3d91d13a82af8b975a65e5e683cbedc10b696a6560558e6e90f7e93739d9e7616e33128525e2e5b47

        • C:\Users\Admin\AppData\Local\Temp\14E.bat

          Filesize

          79B

          MD5

          403991c4d18ac84521ba17f264fa79f2

          SHA1

          850cc068de0963854b0fe8f485d951072474fd45

          SHA256

          ef6e942aefe925fefac19fa816986ea25de6935c4f377c717e29b94e65f9019f

          SHA512

          a20aaa77065d30195e5893f2ff989979383c8d7f82d9e528d4833b1c1236aef4f85284f5250d0f190a174790b650280ffe1fbff7e00c98024ccf5ca746e5b576

        • memory/532-168-0x00000281A0200000-0x00000281A0220000-memory.dmp

          Filesize

          128KB

        • memory/1508-51-0x000001CDA1CD0000-0x000001CDA1CD2000-memory.dmp

          Filesize

          8KB

        • memory/1508-32-0x000001CDA2200000-0x000001CDA2210000-memory.dmp

          Filesize

          64KB

        • memory/1508-16-0x000001CDA1920000-0x000001CDA1930000-memory.dmp

          Filesize

          64KB

        • memory/1508-418-0x000001CDA8440000-0x000001CDA8441000-memory.dmp

          Filesize

          4KB

        • memory/1508-417-0x000001CDA8430000-0x000001CDA8431000-memory.dmp

          Filesize

          4KB

        • memory/2964-208-0x000001DE7B200000-0x000001DE7B300000-memory.dmp

          Filesize

          1024KB

        • memory/2964-251-0x000001DE7AA50000-0x000001DE7AA52000-memory.dmp

          Filesize

          8KB

        • memory/2964-363-0x000001DE7E500000-0x000001DE7E502000-memory.dmp

          Filesize

          8KB

        • memory/2964-366-0x000001DE7E510000-0x000001DE7E512000-memory.dmp

          Filesize

          8KB

        • memory/2964-370-0x000001DE7EB00000-0x000001DE7EB02000-memory.dmp

          Filesize

          8KB

        • memory/2964-373-0x000001DE7EB10000-0x000001DE7EB12000-memory.dmp

          Filesize

          8KB

        • memory/2964-263-0x000001DE7AA90000-0x000001DE7AA92000-memory.dmp

          Filesize

          8KB

        • memory/2964-382-0x000001DE7EB20000-0x000001DE7EB22000-memory.dmp

          Filesize

          8KB

        • memory/2964-388-0x000001DE7EB30000-0x000001DE7EB32000-memory.dmp

          Filesize

          8KB

        • memory/2964-403-0x000001D610000000-0x000001D610100000-memory.dmp

          Filesize

          1024KB

        • memory/2964-410-0x000001DE7BA60000-0x000001DE7BA80000-memory.dmp

          Filesize

          128KB

        • memory/2964-412-0x000001DE7CA80000-0x000001DE7CB80000-memory.dmp

          Filesize

          1024KB

        • memory/2964-260-0x000001DE7AA70000-0x000001DE7AA72000-memory.dmp

          Filesize

          8KB

        • memory/2964-352-0x000001DE7B9A0000-0x000001DE7B9C0000-memory.dmp

          Filesize

          128KB

        • memory/2964-247-0x000001DE7AA30000-0x000001DE7AA32000-memory.dmp

          Filesize

          8KB

        • memory/2964-440-0x000001DE7D800000-0x000001DE7D900000-memory.dmp

          Filesize

          1024KB

        • memory/2964-244-0x000001DE7AAE0000-0x000001DE7AAE2000-memory.dmp

          Filesize

          8KB

        • memory/2964-241-0x000001DE7AAC0000-0x000001DE7AAC2000-memory.dmp

          Filesize

          8KB

        • memory/2964-237-0x000001DE7AA10000-0x000001DE7AA12000-memory.dmp

          Filesize

          8KB

        • memory/2964-226-0x000001DE7C020000-0x000001DE7C040000-memory.dmp

          Filesize

          128KB

        • memory/2964-225-0x000001DE7BCB0000-0x000001DE7BCB2000-memory.dmp

          Filesize

          8KB

        • memory/3264-4-0x0000000000CE0000-0x0000000000CF6000-memory.dmp

          Filesize

          88KB

        • memory/3880-0-0x0000000000400000-0x0000000000409000-memory.dmp

          Filesize

          36KB

        • memory/3880-6-0x0000000000400000-0x0000000000409000-memory.dmp

          Filesize

          36KB

        • memory/3880-3-0x0000000000400000-0x0000000000409000-memory.dmp

          Filesize

          36KB