Overview

overview

10

Static

static

10

ClientH.exe

windows7-x64

10

ClientH.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    149s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230703-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230703-enlocale:en-usos:windows10-2004-x64system
  • submitted
    28-07-2023 23:48

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General

  • Target

    ClientH.exe

  • Size

    90KB

  • MD5

    5558467d200c00a5acab51d4a9ca98dd

  • SHA1

    f9d50c3556451b056deb0950b6bdd4c3ecbb570f

  • SHA256

    213452a323be1617cfa62abeae43d873bec1e5c740aa2177e157a9772a92f231

  • SHA512

    80167cbf7301726ef6a1fd8f2c91db4076f5f5c869338953b1dacc88bf7f82e7caadabbbf32ecda3327c1be4c9da2477a198123a9ac1acf114f03c64bada3921

  • SSDEEP

    1536:ebRiQMhQ57SK3bUzZdQ1iIMvnZlbLxjV3AGq5gWlocT1wzySsd9NJ33p:ebRF57SKsstcnZTJQDgWPaySsdH5Z

Score
10/10
arrowratvenomhvncpersistencerat

Malware Config

Extracted

Family

arrowrat

Botnet

VenomHVNC

C2

185.183.35.122:4448

Mutex

GHAEYKXuf.exe

Signatures

  • ArrowRat

    Remote access tool with various capabilities first seen in late 2021.

    ratarrowrat
  • Modifies WinLogon for persistence 2 TTPs 1 IoCs
    persistence
  • Modifies Installed Components in the registry 2 TTPs 1 IoCs
    persistence
  • Enumerates connected drives 3 TTPs 2 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Suspicious use of SetThreadContext 1 IoCs
  • Program crash 5 IoCs
  • Checks SCSI registry key(s) 3 TTPs 22 IoCs

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

  • Modifies Internet Explorer settings 1 TTPs 10 IoCs
    adwarespyware
  • Modifies registry class 64 IoCs
  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 21 IoCs
  • Suspicious use of FindShellTrayWindow 49 IoCs
  • Suspicious use of SendNotifyMessage 21 IoCs
  • Suspicious use of SetWindowsHookEx 6 IoCs
  • Suspicious use of WriteProcessMemory 10 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\ClientH.exe
    "C:\Users\Admin\AppData\Local\Temp\ClientH.exe"
    1⤵
    • Modifies WinLogon for persistence
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2748
    • C:\Windows\explorer.exe
      "C:\Windows\explorer.exe"
      2⤵
      • Modifies Installed Components in the registry
      • Enumerates connected drives
      • Checks SCSI registry key(s)
      • Modifies registry class
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      PID:3304
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe" VenomHVNC 185.183.35.122 4448 GHAEYKXuf.exe
      2⤵
        PID:4656
    • C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe
      "C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe" -ServerName:App.AppXywbrabmsek0gm3tkwpr5kwzbs55tkqay.mca
      1⤵
      • Modifies registry class
      • Suspicious use of SetWindowsHookEx
      PID:5044
    • C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe
      "C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe" -ServerName:CortanaUI.AppX8z9r6jm96hw4bsbneegw0kyxx296wr9t.mca
      1⤵
      • Modifies Internet Explorer settings
      • Modifies registry class
      • Suspicious use of SetWindowsHookEx
      PID:3096
      • C:\Windows\system32\WerFault.exe
        C:\Windows\system32\WerFault.exe -u -p 3096 -s 3520
        2⤵
        • Program crash
        PID:2124
    • C:\Windows\system32\WerFault.exe
      C:\Windows\system32\WerFault.exe -pss -s 424 -p 3096 -ip 3096
      1⤵
        PID:1992
      • C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe
        "C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe" -ServerName:CortanaUI.AppX8z9r6jm96hw4bsbneegw0kyxx296wr9t.mca
        1⤵
        • Modifies Internet Explorer settings
        • Modifies registry class
        • Suspicious use of SetWindowsHookEx
        PID:2176
        • C:\Windows\system32\WerFault.exe
          C:\Windows\system32\WerFault.exe -u -p 2176 -s 3500
          2⤵
          • Program crash
          PID:4052
      • C:\Windows\system32\WerFault.exe
        C:\Windows\system32\WerFault.exe -pss -s 180 -p 2176 -ip 2176
        1⤵
          PID:4924
        • C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe
          "C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe" -ServerName:CortanaUI.AppX8z9r6jm96hw4bsbneegw0kyxx296wr9t.mca
          1⤵
          • Modifies Internet Explorer settings
          • Modifies registry class
          • Suspicious use of SetWindowsHookEx
          PID:4396
          • C:\Windows\system32\WerFault.exe
            C:\Windows\system32\WerFault.exe -u -p 4396 -s 3936
            2⤵
            • Program crash
            PID:1584
        • C:\Windows\system32\WerFault.exe
          C:\Windows\system32\WerFault.exe -pss -s 428 -p 4396 -ip 4396
          1⤵
            PID:4416
          • C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe
            "C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe" -ServerName:CortanaUI.AppX8z9r6jm96hw4bsbneegw0kyxx296wr9t.mca
            1⤵
            • Modifies Internet Explorer settings
            • Modifies registry class
            • Suspicious use of SetWindowsHookEx
            PID:2076
            • C:\Windows\system32\WerFault.exe
              C:\Windows\system32\WerFault.exe -u -p 2076 -s 3608
              2⤵
              • Program crash
              PID:952
          • C:\Windows\system32\WerFault.exe
            C:\Windows\system32\WerFault.exe -pss -s 488 -p 2076 -ip 2076
            1⤵
              PID:3376
            • C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe
              "C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe" -ServerName:CortanaUI.AppX8z9r6jm96hw4bsbneegw0kyxx296wr9t.mca
              1⤵
              • Modifies Internet Explorer settings
              • Modifies registry class
              • Suspicious use of SetWindowsHookEx
              PID:4516
              • C:\Windows\system32\WerFault.exe
                C:\Windows\system32\WerFault.exe -u -p 4516 -s 3592
                2⤵
                • Program crash
                PID:1556
            • C:\Windows\system32\WerFault.exe
              C:\Windows\system32\WerFault.exe -pss -s 176 -p 4516 -ip 4516
              1⤵
                PID:4884
              • C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe
                "C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe" -ServerName:CortanaUI.AppX8z9r6jm96hw4bsbneegw0kyxx296wr9t.mca
                1⤵
                  PID:3400

                Network

                MITRE ATT&CK Enterprise v15

                Replay Monitor

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                Downloads

                • C:\Users\Admin\AppData\Local\Packages\Microsoft.Windows.Search_cw5n1h2txyewy\AC\Microsoft\Internet Explorer\DOMStore\BT784649\microsoft.windows[1].xml
                  Filesize

                  96B

                  MD5

                  ca164f0f7f747b1e307432b30c0ee059

                  SHA1

                  4a9a2dd1dd0ca2eb016f0900bbbd3f879fbaef11

                  SHA256

                  d9c707addf2be3f865272f0e66f209e50ccea6dec0443dea6f756698bceaca84

                  SHA512

                  c0cebdabe4a193662fc6680fde0691534c456e3221a7df4e32f5d078f7c93561223ebfa6e3ce0b3f63f0338703f92c04ba9e5d31f9a4cdb7b809dc288ebd75f9

                  Download Submit

                • C:\Users\Admin\AppData\Local\Packages\Microsoft.Windows.Search_cw5n1h2txyewy\LocalState\DeviceSearchCache\AppCache133350616993768178.txt
                  Filesize

                  75KB

                  MD5

                  22f39923e2942e5a02c3a5f91cefd45b

                  SHA1

                  c33909cb5ae1ad55b18b38b6aedf79c5a2216e13

                  SHA256

                  66457d8ac009ef25f44e676156bc058db582b2a3b431e2589435bb27477328c6

                  SHA512

                  17a2afe32e74150e58080055f3e67d3d4892828d9df28905a0e67227055b61eeab2a4764acf0b701bc481568fac2ccb889b326379319723fae838f8ce09e94fd

                  Download Submit

                • C:\Users\Admin\AppData\Local\Packages\Microsoft.Windows.Search_cw5n1h2txyewy\LocalState\DeviceSearchCache\AppCache133350616993768178.txt.~tmp
                  Filesize

                  75KB

                  MD5

                  22f39923e2942e5a02c3a5f91cefd45b

                  SHA1

                  c33909cb5ae1ad55b18b38b6aedf79c5a2216e13

                  SHA256

                  66457d8ac009ef25f44e676156bc058db582b2a3b431e2589435bb27477328c6

                  SHA512

                  17a2afe32e74150e58080055f3e67d3d4892828d9df28905a0e67227055b61eeab2a4764acf0b701bc481568fac2ccb889b326379319723fae838f8ce09e94fd

                  Download Submit

                • C:\Users\Admin\AppData\Local\Packages\microsoft.windows.search_cw5n1h2txyewy\AC\Microsoft\Internet Explorer\DOMStore\BT784649\microsoft.windows[1].xml
                  Filesize

                  96B

                  MD5

                  ca164f0f7f747b1e307432b30c0ee059

                  SHA1

                  4a9a2dd1dd0ca2eb016f0900bbbd3f879fbaef11

                  SHA256

                  d9c707addf2be3f865272f0e66f209e50ccea6dec0443dea6f756698bceaca84

                  SHA512

                  c0cebdabe4a193662fc6680fde0691534c456e3221a7df4e32f5d078f7c93561223ebfa6e3ce0b3f63f0338703f92c04ba9e5d31f9a4cdb7b809dc288ebd75f9

                  Download Submit

                • C:\Users\Admin\AppData\Local\Packages\microsoft.windows.search_cw5n1h2txyewy\AC\Microsoft\Internet Explorer\DOMStore\BT784649\microsoft.windows[1].xml
                  Filesize

                  96B

                  MD5

                  ca164f0f7f747b1e307432b30c0ee059

                  SHA1

                  4a9a2dd1dd0ca2eb016f0900bbbd3f879fbaef11

                  SHA256

                  d9c707addf2be3f865272f0e66f209e50ccea6dec0443dea6f756698bceaca84

                  SHA512

                  c0cebdabe4a193662fc6680fde0691534c456e3221a7df4e32f5d078f7c93561223ebfa6e3ce0b3f63f0338703f92c04ba9e5d31f9a4cdb7b809dc288ebd75f9

                  Download Submit

                • C:\Users\Admin\AppData\Local\Packages\microsoft.windows.search_cw5n1h2txyewy\AC\Microsoft\Internet Explorer\DOMStore\BT784649\microsoft.windows[1].xml
                  Filesize

                  96B

                  MD5

                  ca164f0f7f747b1e307432b30c0ee059

                  SHA1

                  4a9a2dd1dd0ca2eb016f0900bbbd3f879fbaef11

                  SHA256

                  d9c707addf2be3f865272f0e66f209e50ccea6dec0443dea6f756698bceaca84

                  SHA512

                  c0cebdabe4a193662fc6680fde0691534c456e3221a7df4e32f5d078f7c93561223ebfa6e3ce0b3f63f0338703f92c04ba9e5d31f9a4cdb7b809dc288ebd75f9

                  Download Submit

                • C:\Users\Admin\AppData\Local\Packages\microsoft.windows.search_cw5n1h2txyewy\AC\Microsoft\Internet Explorer\DOMStore\BT784649\microsoft.windows[1].xml
                  Filesize

                  96B

                  MD5

                  ca164f0f7f747b1e307432b30c0ee059

                  SHA1

                  4a9a2dd1dd0ca2eb016f0900bbbd3f879fbaef11

                  SHA256

                  d9c707addf2be3f865272f0e66f209e50ccea6dec0443dea6f756698bceaca84

                  SHA512

                  c0cebdabe4a193662fc6680fde0691534c456e3221a7df4e32f5d078f7c93561223ebfa6e3ce0b3f63f0338703f92c04ba9e5d31f9a4cdb7b809dc288ebd75f9

                  Download Submit

                • memory/2076-236-0x00000200C7840000-0x00000200C7860000-memory.dmp

                  Filesize

                  128KB

                  Download

                • memory/2076-232-0x00000200C7470000-0x00000200C7490000-memory.dmp

                  Filesize

                  128KB

                  Download

                • memory/2076-234-0x00000200C7430000-0x00000200C7450000-memory.dmp

                  Filesize

                  128KB

                  Download

                • memory/2176-180-0x000002A659E50000-0x000002A659E70000-memory.dmp

                  Filesize

                  128KB

                  Download

                • memory/2176-176-0x000002A659A40000-0x000002A659A60000-memory.dmp

                  Filesize

                  128KB

                  Download

                • memory/2176-173-0x000002A659A80000-0x000002A659AA0000-memory.dmp

                  Filesize

                  128KB

                  Download

                • memory/2748-140-0x00000000748B0000-0x0000000075060000-memory.dmp

                  Filesize

                  7.7MB

                  Download

                • memory/2748-133-0x0000000000750000-0x000000000076C000-memory.dmp

                  Filesize

                  112KB

                  Download

                • memory/2748-136-0x0000000005250000-0x00000000052EC000-memory.dmp

                  Filesize

                  624KB

                  Download

                • memory/2748-135-0x0000000005650000-0x0000000005BF4000-memory.dmp

                  Filesize

                  5.6MB

                  Download

                • memory/2748-134-0x00000000748B0000-0x0000000075060000-memory.dmp

                  Filesize

                  7.7MB

                  Download

                • memory/3096-155-0x0000013ADD6F0000-0x0000013ADD710000-memory.dmp

                  Filesize

                  128KB

                  Download

                • memory/3096-153-0x0000013ADCFE0000-0x0000013ADD000000-memory.dmp

                  Filesize

                  128KB

                  Download

                • memory/3096-151-0x0000013ADD320000-0x0000013ADD340000-memory.dmp

                  Filesize

                  128KB

                  Download

                • memory/3304-144-0x0000000003110000-0x0000000003111000-memory.dmp

                  Filesize

                  4KB

                  Download

                • memory/4396-214-0x0000026A9EB80000-0x0000026A9EBA0000-memory.dmp

                  Filesize

                  128KB

                  Download

                • memory/4396-212-0x0000026A9E570000-0x0000026A9E590000-memory.dmp

                  Filesize

                  128KB

                  Download

                • memory/4396-210-0x0000026A9E5B0000-0x0000026A9E5D0000-memory.dmp

                  Filesize

                  128KB

                  Download

                • memory/4516-253-0x0000023B203E0000-0x0000023B20400000-memory.dmp

                  Filesize

                  128KB

                  Download

                • memory/4516-257-0x0000023B209B0000-0x0000023B209D0000-memory.dmp

                  Filesize

                  128KB

                  Download

                • memory/4516-255-0x0000023B203A0000-0x0000023B203C0000-memory.dmp

                  Filesize

                  128KB

                  Download

                • memory/4656-187-0x0000000005A40000-0x0000000005A50000-memory.dmp

                  Filesize

                  64KB

                  Download

                • memory/4656-165-0x00000000748B0000-0x0000000075060000-memory.dmp

                  Filesize

                  7.7MB

                  Download

                • memory/4656-143-0x0000000005A40000-0x0000000005A50000-memory.dmp

                  Filesize

                  64KB

                  Download

                • memory/4656-142-0x00000000057F0000-0x0000000005882000-memory.dmp

                  Filesize

                  584KB

                  Download

                • memory/4656-141-0x00000000748B0000-0x0000000075060000-memory.dmp

                  Filesize

                  7.7MB

                  Download

                • memory/4656-137-0x0000000000400000-0x0000000000410000-memory.dmp

                  Filesize

                  64KB

                  Download