Analysis

  • max time kernel
    150s
  • max time network
    144s
  • 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, 00:54

General

  • Target

    c344b4b250b4518d48fc0edbdd15e7ab7fcf3f293dcc2d72ec0bd8e565fb05b3.exe

  • Size

    270KB

  • MD5

    ca3a2d6beb3ccbcb547e57e55af27c58

  • SHA1

    83afdeb1c635c7116dfb9cc1b7e9268a6193c536

  • SHA256

    c344b4b250b4518d48fc0edbdd15e7ab7fcf3f293dcc2d72ec0bd8e565fb05b3

  • SHA512

    e4d76fa7cb8f7e82cb7ac19ede1612636e2501a7dc18da2f87e6b8eb952a26e9285e2296b30390f06511bcd1591033dd7f2232c7e9f85befd0d9a7ad00db6843

  • SSDEEP

    6144:RRwhrJ+j+5j68KsT6h/OCy5U9uAOwAsBO6YJjMqw6:RRWN+j+5+RsqGGubsBKjtw6

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 8 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 64 IoCs
  • Suspicious use of SetWindowsHookEx 4 IoCs
  • Suspicious use of WriteProcessMemory 23 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\c344b4b250b4518d48fc0edbdd15e7ab7fcf3f293dcc2d72ec0bd8e565fb05b3.exe
    "C:\Users\Admin\AppData\Local\Temp\c344b4b250b4518d48fc0edbdd15e7ab7fcf3f293dcc2d72ec0bd8e565fb05b3.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:4392
    • 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:1344
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4392 -s 212
      2⤵
      • Program crash
      PID:276
  • C:\Windows\system32\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\C8D9.bat" "
    1⤵
    • Checks computer location settings
    PID:196
  • 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:3196
  • C:\Windows\system32\browser_broker.exe
    C:\Windows\system32\browser_broker.exe -Embedding
    1⤵
    • Modifies Internet Explorer settings
    PID:4372
  • 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:4772
  • 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:4268
  • 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:1456
  • 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:1740
  • 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:624
  • 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:4068
  • 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:452
  • 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:2096
  • 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:384

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\3E11SQNW\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\G29OJW17\suggestions[1].en-US

          Filesize

          17KB

          MD5

          5a34cb996293fde2cb7a4ac89587393a

          SHA1

          3c96c993500690d1a77873cd62bc639b3a10653f

          SHA256

          c6a5377cbc07eece33790cfc70572e12c7a48ad8296be25c0cc805a1f384dbad

          SHA512

          e1b7d0107733f81937415104e70f68b1be6fd0ca65dccf4ff72637943d44278d3a77f704aedff59d2dbc0d56a609b2590c8ec0dd6bc48ab30f1dad0c07a0a3ee

        • C:\Users\Admin\AppData\Local\Packages\microsoft.microsoftedge_8wekyb3d8bbwe\AC\#!001\MicrosoftEdge\Cookies\TTBCY49D.cookie

          Filesize

          132B

          MD5

          f24d8b9f5901705b5ef4e6b618b1be36

          SHA1

          8aa50ab728bcae25a3b7daafb0913cd32f28c2a8

          SHA256

          9d0eb29ffc2e5585cbca837be8dc4173903673d8cef6e8d84f4a85a420f92ee8

          SHA512

          2f89de31480d594cd58eb77026dee850c7813d6b5e81fed4dfec8aeaeebc98fa7c382d2ee013b2a4bf85d7ea0d89dd2ac67fa408f454c43ac33fa97c3d9bd263

        • C:\Users\Admin\AppData\Local\Packages\microsoft.microsoftedge_8wekyb3d8bbwe\AC\#!001\MicrosoftEdge\Cookies\XCZ59JC2.cookie

          Filesize

          132B

          MD5

          847405ec2f8f8c98fd06ecc3d7c7e5c7

          SHA1

          fd8ad307b965d49ce7f6851e534c14a08e414294

          SHA256

          61dc34e2561d51ff8918f3c7b29ddb6eedf222c6e52087c9c60d0774d91a1ab4

          SHA512

          c7bc80ca270c643528168169c79d912173063a72d57c6ef58d87ea121df31d9c521449c4de6cba530378565868948a5227b9858760950601baf54704c85e6c8b

        • 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\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

          f71138354f6b5cfcfd3034643c48e1f2

          SHA1

          21864b648507e8f9620038e5c125c7c49632490a

          SHA256

          b73de716998f7740524d9d2a6d07b3adc1e37a7ae787aad33300dec065f324e4

          SHA512

          a760068968aa84cdf36d92540365ce58852fa8bafe4dc70d73fec1716892a7e0d7d59433e96de4771599f0306e10fd85d95f878a95b522ede19c12a620be7dd2

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

          Filesize

          392B

          MD5

          43440212e7ababa74d80b8e705605253

          SHA1

          be9a15e3608a06ee8cbf0c5b4cfb02e7f22d681b

          SHA256

          2a077aa9e0b111f8fa0eb34d828132f9399de604df713fed8c0b56e10ccedd18

          SHA512

          13939454a843d8878d5109cb34240c0d1772dbfe56125d50c3bca63152d3f3b93f7c05fe9bcbf455a83170eb20369e2e47424c8bb09d6a3dc0137801cc1d61e3

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

          Filesize

          406B

          MD5

          6d078ef4ab75cc34139e475eed626c8c

          SHA1

          fa13745b04ee161f0c7137f20631042ab1d2e6ec

          SHA256

          6ba1848adf4e998c694e01b70c6d649d3b65b77b0a40489742e4a408389d0f6e

          SHA512

          37290d7ced8f823b0baab206473aa0ffef4a258a5c231d79e4227a88332a38f0f7dd753371e260745fa730fc5d2e72d5c949b6e822884f6486ae4177f83a1847

        • C:\Users\Admin\AppData\Local\Temp\C8D9.bat

          Filesize

          79B

          MD5

          403991c4d18ac84521ba17f264fa79f2

          SHA1

          850cc068de0963854b0fe8f485d951072474fd45

          SHA256

          ef6e942aefe925fefac19fa816986ea25de6935c4f377c717e29b94e65f9019f

          SHA512

          a20aaa77065d30195e5893f2ff989979383c8d7f82d9e528d4833b1c1236aef4f85284f5250d0f190a174790b650280ffe1fbff7e00c98024ccf5ca746e5b576

        • memory/1344-0-0x0000000000400000-0x0000000000409000-memory.dmp

          Filesize

          36KB

        • memory/1344-5-0x0000000000400000-0x0000000000409000-memory.dmp

          Filesize

          36KB

        • memory/1344-3-0x0000000000400000-0x0000000000409000-memory.dmp

          Filesize

          36KB

        • memory/1456-380-0x0000029DAF6E0000-0x0000029DAF6E2000-memory.dmp

          Filesize

          8KB

        • memory/1456-393-0x0000029DB06F0000-0x0000029DB06F2000-memory.dmp

          Filesize

          8KB

        • memory/1456-390-0x0000029DB00E0000-0x0000029DB00E2000-memory.dmp

          Filesize

          8KB

        • memory/1456-385-0x0000029DAF6F0000-0x0000029DAF6F2000-memory.dmp

          Filesize

          8KB

        • memory/1456-396-0x0000029DB0E50000-0x0000029DB0E52000-memory.dmp

          Filesize

          8KB

        • memory/1456-377-0x0000029DAECA0000-0x0000029DAECA2000-memory.dmp

          Filesize

          8KB

        • memory/1456-366-0x0000029DAEC20000-0x0000029DAEC22000-memory.dmp

          Filesize

          8KB

        • memory/1456-254-0x0000029DAEEE0000-0x0000029DAEF00000-memory.dmp

          Filesize

          128KB

        • memory/1456-236-0x0000029DAF5E0000-0x0000029DAF6E0000-memory.dmp

          Filesize

          1024KB

        • memory/1740-196-0x0000022EBA7E0000-0x0000022EBA8E0000-memory.dmp

          Filesize

          1024KB

        • memory/3196-97-0x00000251D02C0000-0x00000251D02C2000-memory.dmp

          Filesize

          8KB

        • memory/3196-78-0x00000251D0000000-0x00000251D0010000-memory.dmp

          Filesize

          64KB

        • memory/3196-62-0x00000251CFB20000-0x00000251CFB30000-memory.dmp

          Filesize

          64KB

        • memory/3224-28-0x0000000000D50000-0x0000000000D60000-memory.dmp

          Filesize

          64KB

        • memory/3224-36-0x0000000000D50000-0x0000000000D60000-memory.dmp

          Filesize

          64KB

        • memory/3224-52-0x0000000000D50000-0x0000000000D60000-memory.dmp

          Filesize

          64KB

        • memory/3224-54-0x0000000000D50000-0x0000000000D60000-memory.dmp

          Filesize

          64KB

        • memory/3224-53-0x0000000000D50000-0x0000000000D60000-memory.dmp

          Filesize

          64KB

        • memory/3224-55-0x0000000000D50000-0x0000000000D60000-memory.dmp

          Filesize

          64KB

        • memory/3224-49-0x0000000000D50000-0x0000000000D60000-memory.dmp

          Filesize

          64KB

        • memory/3224-47-0x0000000000D50000-0x0000000000D60000-memory.dmp

          Filesize

          64KB

        • memory/3224-42-0x0000000000D50000-0x0000000000D60000-memory.dmp

          Filesize

          64KB

        • memory/3224-46-0x0000000000D50000-0x0000000000D60000-memory.dmp

          Filesize

          64KB

        • memory/3224-45-0x0000000000D50000-0x0000000000D60000-memory.dmp

          Filesize

          64KB

        • memory/3224-43-0x0000000000D60000-0x0000000000D70000-memory.dmp

          Filesize

          64KB

        • memory/3224-41-0x0000000000D50000-0x0000000000D60000-memory.dmp

          Filesize

          64KB

        • memory/3224-39-0x0000000000D50000-0x0000000000D60000-memory.dmp

          Filesize

          64KB

        • memory/3224-37-0x0000000000D50000-0x0000000000D60000-memory.dmp

          Filesize

          64KB

        • memory/3224-50-0x0000000000D50000-0x0000000000D60000-memory.dmp

          Filesize

          64KB

        • memory/3224-35-0x0000000000D50000-0x0000000000D60000-memory.dmp

          Filesize

          64KB

        • memory/3224-33-0x0000000000D80000-0x0000000000D90000-memory.dmp

          Filesize

          64KB

        • memory/3224-31-0x0000000000D50000-0x0000000000D60000-memory.dmp

          Filesize

          64KB

        • memory/3224-30-0x0000000000D50000-0x0000000000D60000-memory.dmp

          Filesize

          64KB

        • memory/3224-26-0x0000000000D50000-0x0000000000D60000-memory.dmp

          Filesize

          64KB

        • memory/3224-25-0x0000000000D50000-0x0000000000D60000-memory.dmp

          Filesize

          64KB

        • memory/3224-24-0x0000000000D50000-0x0000000000D60000-memory.dmp

          Filesize

          64KB

        • memory/3224-22-0x0000000000D50000-0x0000000000D60000-memory.dmp

          Filesize

          64KB

        • memory/3224-21-0x0000000000D50000-0x0000000000D60000-memory.dmp

          Filesize

          64KB

        • memory/3224-19-0x0000000000D60000-0x0000000000D70000-memory.dmp

          Filesize

          64KB

        • memory/3224-18-0x0000000000D50000-0x0000000000D60000-memory.dmp

          Filesize

          64KB

        • memory/3224-16-0x0000000000D50000-0x0000000000D60000-memory.dmp

          Filesize

          64KB

        • memory/3224-14-0x0000000000D00000-0x0000000000D10000-memory.dmp

          Filesize

          64KB

        • memory/3224-13-0x0000000000D00000-0x0000000000D10000-memory.dmp

          Filesize

          64KB

        • memory/3224-4-0x0000000000CB0000-0x0000000000CC6000-memory.dmp

          Filesize

          88KB