Analysis

  • max time kernel
    150s
  • max time network
    140s
  • 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, 01:31

General

  • Target

    957ff09bcf9200c5f94f7114fe4b89297ea4d51e58036ef85e9b4366321cf9ca.exe

  • Size

    270KB

  • MD5

    822eee271c0490649f4881efbb381dca

  • SHA1

    d3ce9521fd75f7af5aea8125faf5e0c49967d44f

  • SHA256

    957ff09bcf9200c5f94f7114fe4b89297ea4d51e58036ef85e9b4366321cf9ca

  • SHA512

    500846576e5b7e8c12eb34b94b51c1ff87d5c9df26d5349dc07a84902db9f369d0d50de3307518f19b1c9ef56b4f2c807f0878347de64b37c385e2d6eb5fa11a

  • SSDEEP

    6144:YRyhrJ+j+5j68KsT6h/OCy5U9uAOTAQ3bojsDqw6:YRcN+j+5+RsqGGuaE2/w6

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 56 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\957ff09bcf9200c5f94f7114fe4b89297ea4d51e58036ef85e9b4366321cf9ca.exe
    "C:\Users\Admin\AppData\Local\Temp\957ff09bcf9200c5f94f7114fe4b89297ea4d51e58036ef85e9b4366321cf9ca.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:4636
    • 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:4592
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4636 -s 212
      2⤵
      • Program crash
      PID:4548
  • C:\Windows\system32\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\9601.bat" "
    1⤵
    • Checks computer location settings
    PID:2696
  • 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:1160
  • C:\Windows\system32\browser_broker.exe
    C:\Windows\system32\browser_broker.exe -Embedding
    1⤵
    • Modifies Internet Explorer settings
    PID:4508
  • 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:4472
  • 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:3416
  • 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:1760
  • 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:3160
  • 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:2724
  • 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:5056
  • 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:1672
  • 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:3500

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        • C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\PZQ0K35H\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\KGUHK7KB\suggestions[1].en-US

          Filesize

          17KB

          MD5

          5a34cb996293fde2cb7a4ac89587393a

          SHA1

          3c96c993500690d1a77873cd62bc639b3a10653f

          SHA256

          c6a5377cbc07eece33790cfc70572e12c7a48ad8296be25c0cc805a1f384dbad

          SHA512

          e1b7d0107733f81937415104e70f68b1be6fd0ca65dccf4ff72637943d44278d3a77f704aedff59d2dbc0d56a609b2590c8ec0dd6bc48ab30f1dad0c07a0a3ee

        • C:\Users\Admin\AppData\Local\Packages\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\AC\MicrosoftEdge\Cache\SBGQ2HWM\B8BxsscfVBr[1].ico

          Filesize

          1KB

          MD5

          e508eca3eafcc1fc2d7f19bafb29e06b

          SHA1

          a62fc3c2a027870d99aedc241e7d5babba9a891f

          SHA256

          e6d1d77403cd9f14fd2377d07e84350cfe768e3353e402bf42ebdc8593a58c9a

          SHA512

          49e3f31fd73e52ba274db9c7d306cc188e09c3ae683827f420fbb17534d197a503460e7ec2f1af46065f8d0b33f37400659bfa2ae165e502f97a8150e184a38c

        • C:\Users\Admin\AppData\Local\Packages\microsoft.microsoftedge_8wekyb3d8bbwe\AC\#!001\MicrosoftEdge\Cookies\23V8JLHU.cookie

          Filesize

          130B

          MD5

          329be527a21f3b972de4cf8fe0a2aeea

          SHA1

          e30283eef5b19d150e627ec1ac4d95bf0da950b6

          SHA256

          e14cd1450b5b17ba36d398a1def803a551aedc1e59f5c19a9358170e7586b206

          SHA512

          e81f5083ef14523b686d5dd05e2635b977f3858d8fb1068ec1036cfbc6f669c08f653a8cad8ba5d85df114e5762aae796b91f98d9b86dc30715696d630729e39

        • C:\Users\Admin\AppData\Local\Packages\microsoft.microsoftedge_8wekyb3d8bbwe\AC\#!001\MicrosoftEdge\Cookies\HCF5L3EK.cookie

          Filesize

          130B

          MD5

          319e79f7bb5982a6419003ef3eed0cc8

          SHA1

          c930e6d18165eb6984a172fc5314d1f78ab579f0

          SHA256

          bbbab104f5f77c3d259d73bc6a35f0e679c0fd14b1cba5b587daba3493f29e32

          SHA512

          4ec82cb802565a476caa0d6d6b890c173c129fa993ad6e368db259d7bd752c0f46fabd32f872bbb883b4fc149a1ba4b82fc615db41ec3d46b31ed9372fc7568a

        • 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

          ee994a6ecfea41f896d8b294b7598a33

          SHA1

          b571ce5d9d7ceced0e15bdbe662c30363fefc65f

          SHA256

          c139e9ab11258f3e0dc769f6a929c086201da5f3e1802e90335b6dd79d80aa9d

          SHA512

          e3e9bf48c905ac85a1092a4a2cd8cf414cca13470dbbc9b8b4f5840ed4065fa9c70649d87f53f036c298588af7121dbfc39309a86e9e64e2f6b5e12b092a1f7b

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

          Filesize

          392B

          MD5

          b65a802491f2c16e70b8496a3d25747b

          SHA1

          5196a47ea1e9315cc35152b68f980a2478e3d321

          SHA256

          7f5f05f129f4856379b7d02ae8194c2f64263e61e76c4702a734ddb0ba67b14b

          SHA512

          24304858759e36e2bb111edeb46c7d9e8ccabad542263609c27dc9ae7f6f3f26ee827d280204d006d705ee39fea0edcc32ddb38529626086b8bc625dbc65008f

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

          Filesize

          406B

          MD5

          159625eef494d3095cb2994e7f5f18a8

          SHA1

          35c2d50f51a6783f1d0cd5f172f4c082aeb5e5fc

          SHA256

          c317771ebefcee172bd3b21ddb899d8130bcce29b2f0861d9ff56f007f367adb

          SHA512

          04417a01f9d81a94a7b367831cb204584e436070a025177508b6fc44b1051907a569d07659a69419f9a22efcab83437857b310093d98291cdcb5d35628243cf3

        • C:\Users\Admin\AppData\Local\Temp\9601.bat

          Filesize

          79B

          MD5

          403991c4d18ac84521ba17f264fa79f2

          SHA1

          850cc068de0963854b0fe8f485d951072474fd45

          SHA256

          ef6e942aefe925fefac19fa816986ea25de6935c4f377c717e29b94e65f9019f

          SHA512

          a20aaa77065d30195e5893f2ff989979383c8d7f82d9e528d4833b1c1236aef4f85284f5250d0f190a174790b650280ffe1fbff7e00c98024ccf5ca746e5b576

        • memory/1160-382-0x00000294B6EF0000-0x00000294B6EF1000-memory.dmp

          Filesize

          4KB

        • memory/1160-51-0x00000294B0AB0000-0x00000294B0AB2000-memory.dmp

          Filesize

          8KB

        • memory/1160-477-0x00000294B7000000-0x00000294B7091000-memory.dmp

          Filesize

          580KB

        • memory/1160-16-0x00000294B0720000-0x00000294B0730000-memory.dmp

          Filesize

          64KB

        • memory/1160-32-0x00000294B0920000-0x00000294B0930000-memory.dmp

          Filesize

          64KB

        • memory/1160-383-0x00000294B70A0000-0x00000294B70A1000-memory.dmp

          Filesize

          4KB

        • memory/1672-494-0x0000020DEB630000-0x0000020DEB632000-memory.dmp

          Filesize

          8KB

        • memory/1672-492-0x0000020DEB610000-0x0000020DEB612000-memory.dmp

          Filesize

          8KB

        • memory/1672-490-0x0000020DEB550000-0x0000020DEB552000-memory.dmp

          Filesize

          8KB

        • memory/1672-488-0x0000020DEB530000-0x0000020DEB532000-memory.dmp

          Filesize

          8KB

        • memory/1760-369-0x000001705D990000-0x000001705D992000-memory.dmp

          Filesize

          8KB

        • memory/1760-337-0x000001705C9F0000-0x000001705C9F2000-memory.dmp

          Filesize

          8KB

        • memory/1760-410-0x000001705CD00000-0x000001705CE00000-memory.dmp

          Filesize

          1024KB

        • memory/1760-349-0x000001705C9D0000-0x000001705C9D2000-memory.dmp

          Filesize

          8KB

        • memory/1760-332-0x000001705CD00000-0x000001705CE00000-memory.dmp

          Filesize

          1024KB

        • memory/1760-327-0x000001705B570000-0x000001705B572000-memory.dmp

          Filesize

          8KB

        • memory/1760-208-0x000001705B7C0000-0x000001705B7E0000-memory.dmp

          Filesize

          128KB

        • memory/1760-192-0x000001705A600000-0x000001705A700000-memory.dmp

          Filesize

          1024KB

        • memory/1760-335-0x000001705C9C0000-0x000001705C9C2000-memory.dmp

          Filesize

          8KB

        • memory/1760-390-0x000001705AFE0000-0x000001705B000000-memory.dmp

          Filesize

          128KB

        • memory/1760-496-0x0000017049C00000-0x0000017049C91000-memory.dmp

          Filesize

          580KB

        • memory/1760-355-0x000001705D1F0000-0x000001705D1F2000-memory.dmp

          Filesize

          8KB

        • memory/1760-359-0x000001705D950000-0x000001705D952000-memory.dmp

          Filesize

          8KB

        • memory/1760-366-0x000001705D980000-0x000001705D982000-memory.dmp

          Filesize

          8KB

        • memory/1760-362-0x000001705D970000-0x000001705D972000-memory.dmp

          Filesize

          8KB

        • memory/2724-468-0x000002323AEE0000-0x000002323AF00000-memory.dmp

          Filesize

          128KB

        • memory/3160-412-0x00000172ECF00000-0x00000172ECF91000-memory.dmp

          Filesize

          580KB

        • memory/3304-4-0x0000000001380000-0x0000000001396000-memory.dmp

          Filesize

          88KB

        • memory/4592-0-0x0000000000400000-0x0000000000409000-memory.dmp

          Filesize

          36KB

        • memory/4592-5-0x0000000000400000-0x0000000000409000-memory.dmp

          Filesize

          36KB

        • memory/4592-3-0x0000000000400000-0x0000000000409000-memory.dmp

          Filesize

          36KB