Resubmissions

Analysis

  • max time kernel
    107s
  • max time network
    108s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    24-05-2024 12:19

General

  • Target

    e3f245020bcf6beaca39b8cc9eb06b3db7f209356e765f41d8306ad56735e944.exe

  • Size

    231KB

  • MD5

    144f1b1c4b9cdad97d8dd1a3a89e7ea1

  • SHA1

    1a11d76a6ab646a0d699efa0e5fc71de6e5af92c

  • SHA256

    e3f245020bcf6beaca39b8cc9eb06b3db7f209356e765f41d8306ad56735e944

  • SHA512

    2697bde82afdef6b3e9079e9add7a9026fffec2a9093932d6c05256fe73df0ef9a2fac4f26de28e2b5d87cc7dd0651dac80baa2a3841148409ab2c3ea32b6882

  • SSDEEP

    6144:TZ+geAPqybJnO5AbpbO9jhJdrz8U6n4eOP07NyGyG2qYlw5S3U19:T4FvybJNpazzfoyG

Malware Config

Extracted

Family

asyncrat

Version

Venom RAT + HVNC + Stealer + Grabber v6.0.3

Botnet

Default

C2

66.235.168.242:4449

Mutex

scgofjarww

Attributes
  • delay

    1

  • install

    true

  • install_file

    Loader.exe

  • install_folder

    %AppData%

aes.plain

Extracted

Family

asyncrat

Botnet

Default

C2

66.235.168.242:3232

Attributes
  • delay

    1

  • install

    true

  • install_file

    Loaader.exe

  • install_folder

    %AppData%

aes.plain

Signatures

  • AsyncRat

    AsyncRAT is designed to remotely monitor and control other computers written in C#.

  • Async RAT payload 2 IoCs
  • Executes dropped EXE 5 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Looks up external IP address via web service 2 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Enumerates physical storage devices 1 TTPs

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

  • Creates scheduled task(s) 1 TTPs 2 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Delays execution with timeout.exe 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 27 IoCs
  • Suspicious use of AdjustPrivilegeToken 5 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 40 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\e3f245020bcf6beaca39b8cc9eb06b3db7f209356e765f41d8306ad56735e944.exe
    "C:\Users\Admin\AppData\Local\Temp\e3f245020bcf6beaca39b8cc9eb06b3db7f209356e765f41d8306ad56735e944.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2340
    • C:\Users\Admin\AppData\Local\Temp\Client.exe
      "C:\Users\Admin\AppData\Local\Temp\Client.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2496
      • C:\Windows\System32\cmd.exe
        "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "Loader" /tr '"C:\Users\Admin\AppData\Roaming\Loader.exe"' & exit
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:1524
        • C:\Windows\system32\schtasks.exe
          schtasks /create /f /sc onlogon /rl highest /tn "Loader" /tr '"C:\Users\Admin\AppData\Roaming\Loader.exe"'
          4⤵
          • Creates scheduled task(s)
          PID:2716
      • C:\Windows\system32\cmd.exe
        cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmp20F8.tmp.bat""
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:1364
        • C:\Windows\system32\timeout.exe
          timeout 3
          4⤵
          • Delays execution with timeout.exe
          PID:1548
        • C:\Users\Admin\AppData\Roaming\Loader.exe
          "C:\Users\Admin\AppData\Roaming\Loader.exe"
          4⤵
          • Executes dropped EXE
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of SetWindowsHookEx
          PID:1948
    • C:\Users\Admin\AppData\Local\Temp\Infected.exe
      "C:\Users\Admin\AppData\Local\Temp\Infected.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2608
      • C:\Windows\System32\cmd.exe
        "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "Loaader" /tr '"C:\Users\Admin\AppData\Roaming\Loaader.exe"' & exit
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:2384
        • C:\Windows\system32\schtasks.exe
          schtasks /create /f /sc onlogon /rl highest /tn "Loaader" /tr '"C:\Users\Admin\AppData\Roaming\Loaader.exe"'
          4⤵
          • Creates scheduled task(s)
          PID:2820
      • C:\Windows\system32\cmd.exe
        cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmp20AA.tmp.bat""
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:1984
        • C:\Windows\system32\timeout.exe
          timeout 3
          4⤵
          • Delays execution with timeout.exe
          PID:816
        • C:\Users\Admin\AppData\Roaming\Loaader.exe
          "C:\Users\Admin\AppData\Roaming\Loaader.exe"
          4⤵
          • Executes dropped EXE
          • Suspicious use of AdjustPrivilegeToken
          PID:2308
    • C:\Users\Admin\AppData\Local\Temp\WinDefend.exe
      "C:\Users\Admin\AppData\Local\Temp\WinDefend.exe"
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      • Suspicious use of AdjustPrivilegeToken
      PID:2516

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\Client.exe

    Filesize

    74KB

    MD5

    7ac0adf482250172280defec7a7054da

    SHA1

    20a25f0da68c309d062c4628ead8b6f377ac7969

    SHA256

    3caa5f06008365fbecf46198744793c36c42309b49a6324bebe8123be10f87d5

    SHA512

    d03d033b931f3d39f95a1ec1cdc7d9014783f11b2438c265dd72c0bc34f9d5ced534a38c7c1c88ff930868fd9cf60521dd556b5c486c5cf364f798f39215a1aa

  • C:\Users\Admin\AppData\Local\Temp\Infected.exe

    Filesize

    63KB

    MD5

    b8d455465260a845db35492fda5a8888

    SHA1

    287b0ba049ad8f3be802d2224efb86dba72d3221

    SHA256

    a150a433c6a3e4278f6cc4cbc85863fc431e5c1e65081ad67253513e8ca01282

    SHA512

    5dba43ae31420de362593752e8ff491afbe8d20f183f6b95e6962ea1e637c7bf3bd50b5213e4d928a96b85d9b54841ee697798b0089624b13ef7eded826cd86a

  • C:\Users\Admin\AppData\Local\Temp\WinDefend.exe

    Filesize

    87KB

    MD5

    5fc6a541845fdafb597ddfb98fa28b54

    SHA1

    22e5dd50ddd71bc39c812db0f9b164ca10c556dd

    SHA256

    64e4dedb36812766c522c79cae57b7f3b2694efaa396151d4117a70282166117

    SHA512

    f174e4ccc89d4a7473001a9153a9c3d63bedd393dda1ea3be171768b7587846722ad07445adeafa52ef54802a8ac84eb33ab1799248dcbf7db60aa4f311da5e3

  • C:\Users\Admin\AppData\Local\Temp\tmp20AA.tmp.bat

    Filesize

    151B

    MD5

    68f913766b0d0647c81aed11735114af

    SHA1

    5b97429b179e87c934ba743f72f6b917e26773b0

    SHA256

    5c2ead9e2d69ebd6813041b388931b1c1625bd47bda432b3e9a7e1f500876a26

    SHA512

    3821dcf53aecce8ee0e3b2c4d274b2a3a54bf9d93b710c45ca824d33ee057c9eee8f2ff5b04813d605f2aad6a38db6daf5caa4d0a6e5db29464a4fc6b0914450

  • C:\Users\Admin\AppData\Local\Temp\tmp20F8.tmp.bat

    Filesize

    150B

    MD5

    7147398115912eea2844a94a396adcf2

    SHA1

    4cce31bbe26888975d0b111476b1de2ba652d020

    SHA256

    ff4fa3f584e0f201211900b8c17ae1ad8fc3e5592e820cabba51424afa23d910

    SHA512

    e6caa66b4ea9d24533c33a5fb74d95eb6518f8bf8faf2f987a3fa8c8f7e0d39de4a087c02291a0557e2e2eccfeac36369d09626898b6d82fa493c50c0e49db31

  • C:\Users\Admin\AppData\Roaming\MyData\DataLogs.conf

    Filesize

    8B

    MD5

    cf759e4c5f14fe3eec41b87ed756cea8

    SHA1

    c27c796bb3c2fac929359563676f4ba1ffada1f5

    SHA256

    c9f9f193409217f73cc976ad078c6f8bf65d3aabcf5fad3e5a47536d47aa6761

    SHA512

    c7f832aee13a5eb36d145f35d4464374a9e12fa2017f3c2257442d67483b35a55eccae7f7729243350125b37033e075efbc2303839fd86b81b9b4dca3626953b

  • C:\Users\Public\SSSS.log

    Filesize

    2KB

    MD5

    6855d7f277072919daaafd0a3823f5ec

    SHA1

    2e72b3f0d6576a89c10a45734a4e735890e13bf5

    SHA256

    5ce9a8da4c18e41b832d85d348771eaa05d7db37216f36e56fd951c76c47ec2a

    SHA512

    6b256af0f10944c20ceb81607336c52bbd151617719343a7ced2c86f32e13488ad7320c138c35dc30bd70ba027e25513a1b2ea5d99bd9f656926a0f1eece5034

  • C:\Users\Public\SSSS.log

    Filesize

    2KB

    MD5

    f2abfe11586c78014527a07c51b9a45d

    SHA1

    8d42a9623ce2cb0c573f3cb85018864dbf4e9758

    SHA256

    4ccbac4230df959d1f585f65b2e07c09c1de2db9b70b6346d645f199918dc1d5

    SHA512

    ccbe0000bfaa59f8c030620dbf2639cbae9c6ced4e512b6b3745c90e116e1b40173cdcbc964aba82e836d5a3b2d144a26d94fcedfe33ebb6d2012f442c1c44ce

  • C:\Users\Public\SSSS.log

    Filesize

    2KB

    MD5

    755ad58896e078f5025ffd7ac1aececb

    SHA1

    acc0afe7f46855c07d37d91ceb5e888caefbb196

    SHA256

    37f0f6558ee4728fd54b507010dcb748108ebf8311fe6fe70ba29adb4de37240

    SHA512

    219e8b200ad8cc0832e4ab55d312ee2774949e88112cc06c57e318d086539ba76732be3c383a6b90a261458b55e014c813a6a6a0e5f19ef9c4e2d6e271271744

  • C:\Users\Public\SSSS.log

    Filesize

    3KB

    MD5

    1c84a405caf71c53397670461ef529e4

    SHA1

    14c1ae706e9d7dbb2393e8abc778a685af1bc2e6

    SHA256

    b82dc192ed820a5f697261a33b61534570374b767269260b173f2972f5d1f14e

    SHA512

    1d96b212a21ae6b22ecd7144aa8c61ee4061b262cef32d65a7e93bf5dbd6cfe7597223e3eff3d472ac9bcc62be9910cca78b729cd56313d3f190e7a6fc69c55f

  • C:\Users\Public\SSSS.log

    Filesize

    3KB

    MD5

    b3b623f3a885b8a2a4dea8b220e96d90

    SHA1

    751138471b75de14f34d087d6ceb2df328863888

    SHA256

    12d50976bc5391c630e145fd9de0a848821801fbd8cb8c1411f903a3b9b11d87

    SHA512

    e6009cb42c475c169a06b09706027d51189ea7734071fedfea68db4c2f816cab062f8847d8e3f4d27dec5cb501821530507fad7e9040c119d4136ccac6a7183f

  • C:\Users\Public\SSSS.log

    Filesize

    4KB

    MD5

    685ba8660d1bb879ffdf6e5b0bbe4570

    SHA1

    707f7b17ace34a7bc7a72b236808fe0fe2b81e87

    SHA256

    89c681a23a7bcb09e3a67b9a9f6ca855df5201d1cd02da67e64ac34225aea39d

    SHA512

    5e18622248ff09c9fba71875967c6444ded5fa43ce930bb2898820ac64c734ce2884e9a90ed9b0f511f7abd7bf57054966755e46f22497827cd3d227fcc38660

  • memory/1948-56-0x0000000001180000-0x0000000001198000-memory.dmp

    Filesize

    96KB

  • memory/2308-57-0x0000000000BC0000-0x0000000000BD6000-memory.dmp

    Filesize

    88KB

  • memory/2340-22-0x000007FEF5490000-0x000007FEF5E7C000-memory.dmp

    Filesize

    9.9MB

  • memory/2340-0-0x000007FEF5493000-0x000007FEF5494000-memory.dmp

    Filesize

    4KB

  • memory/2340-3-0x000007FEF5490000-0x000007FEF5E7C000-memory.dmp

    Filesize

    9.9MB

  • memory/2340-1-0x0000000000B40000-0x0000000000B80000-memory.dmp

    Filesize

    256KB

  • memory/2496-10-0x0000000001000000-0x0000000001018000-memory.dmp

    Filesize

    96KB

  • memory/2496-45-0x000007FEF5490000-0x000007FEF5E7C000-memory.dmp

    Filesize

    9.9MB

  • memory/2496-25-0x000007FEF5490000-0x000007FEF5E7C000-memory.dmp

    Filesize

    9.9MB

  • memory/2496-19-0x000007FEF5490000-0x000007FEF5E7C000-memory.dmp

    Filesize

    9.9MB

  • memory/2516-26-0x00000000001F0000-0x00000000001F6000-memory.dmp

    Filesize

    24KB

  • memory/2516-24-0x0000000001050000-0x000000000106E000-memory.dmp

    Filesize

    120KB

  • memory/2608-14-0x0000000000890000-0x00000000008A6000-memory.dmp

    Filesize

    88KB