Analysis

  • max time kernel
    146s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    28/06/2024, 06:52

General

  • Target
    3644f9a06d97f903a5ceebdd7f2f4500.exe
  • Size 222KB
  • Sample240628-hm25tswerh
  • SHA256 bfc572da40fc3dcbee2ff5590ad5f630becf69e18df37b44140bd4f214facf56
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • asyncrat

Botnet
  • Default

C2
  • 127.0.0.1:6606

  • 127.0.0.1:7707

  • 127.0.0.1:8808

  • https://api.telegram.org/bot7379351260:AAGqtKlpHd72GFMRON17QY1OA6l1sR7mBik/sendMessage?chat_id=5795480469

Mutex
  • AsyncMutex_6SI8OkPnk

Attributes
  • delay

    3

  • install

    false

  • install_folder

    %AppData%

aes.plain

Extracted

Family
  • asyncrat

Version
  • 0.5.8

Botnet
  • Default

C2
  • 127.0.0.1:6606

  • 127.0.0.1:7707

  • 127.0.0.1:8808

  • 94.232.249.111:6606

  • 94.232.249.111:7707

  • 94.232.249.111:8808

Mutex
  • o6tEeoRxJb0n

Attributes
  • delay

    3

  • install

    true

  • install_file

    svchost.exe

  • install_folder

    %AppData%

aes.plain

Signatures

  • AsyncRat

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

  • StormKitty

    StormKitty is an open source info stealer written in C#.

  • StormKitty payload 2 IoCs
  • Async RAT payload 2 IoCs
  • Downloads MZ/PE file
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Drops startup file 5 IoCs
  • Executes dropped EXE 5 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Adds Run key to start application 2 TTPs 5 IoCs
  • Drops desktop.ini file(s) 8 IoCs
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs
  • Looks up external IP address via web service 1 IoCs

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

  • Looks up geolocation information via web service

    Uses a legitimate geolocation service to find the infected system's geolocation info.

  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Event Triggered Execution: Netsh Helper DLL 1 TTPs 6 IoCs

    Netsh.exe (also referred to as Netshell) is a command-line scripting utility used to interact with the network configuration of a system.

  • Checks processor information in registry 2 TTPs 2 IoCs

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

  • Delays execution with timeout.exe 1 IoCs
  • Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 40 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Windows\Explorer.EXE
    C:\Windows\Explorer.EXE
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3300
    • C:\Users\Admin\AppData\Local\Temp\3644f9a06d97f903a5ceebdd7f2f4500.exe
      "C:\Users\Admin\AppData\Local\Temp\3644f9a06d97f903a5ceebdd7f2f4500.exe"
      2⤵
      • Drops startup file
      • Adds Run key to start application
      • Suspicious use of SetThreadContext
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1616
      • C:\Windows\system32\relog.exe
        C:\Windows\system32\relog.exe
        3⤵
        • Executes dropped EXE
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:3512
    • C:\Users\Admin\AppData\Local\Temp\DC6.tmp.svchost.exe
      "C:\Users\Admin\AppData\Local\Temp\DC6.tmp.svchost.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3812
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "svchost" /tr '"C:\Users\Admin\AppData\Roaming\svchost.exe"' & exit
        3⤵
          PID:3668
          • C:\Windows\SysWOW64\schtasks.exe
            schtasks /create /f /sc onlogon /rl highest /tn "svchost" /tr '"C:\Users\Admin\AppData\Roaming\svchost.exe"'
            4⤵
            • Scheduled Task/Job: Scheduled Task
            PID:3280
        • C:\Windows\SysWOW64\cmd.exe
          C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp4D7F.tmp.bat""
          3⤵
            PID:3796
            • C:\Windows\SysWOW64\timeout.exe
              timeout 3
              4⤵
              • Delays execution with timeout.exe
              PID:3608
            • C:\Users\Admin\AppData\Roaming\svchost.exe
              "C:\Users\Admin\AppData\Roaming\svchost.exe"
              4⤵
              • Executes dropped EXE
              • Suspicious use of AdjustPrivilegeToken
              PID:2928
        • C:\Users\Admin\AppData\Local\Temp\17AB.tmp.Serverssss.exe
          "C:\Users\Admin\AppData\Local\Temp\17AB.tmp.Serverssss.exe"
          2⤵
          • Executes dropped EXE
          • Drops desktop.ini file(s)
          • Checks processor information in registry
          • Suspicious use of AdjustPrivilegeToken
          PID:2364
          • C:\Windows\SysWOW64\cmd.exe
            "cmd.exe" /C chcp 65001 && netsh wlan show profile | findstr All
            3⤵
              PID:1752
              • C:\Windows\SysWOW64\chcp.com
                chcp 65001
                4⤵
                  PID:1112
                • C:\Windows\SysWOW64\netsh.exe
                  netsh wlan show profile
                  4⤵
                  • Event Triggered Execution: Netsh Helper DLL
                  PID:1092
                • C:\Windows\SysWOW64\findstr.exe
                  findstr All
                  4⤵
                    PID:4440
                • C:\Windows\SysWOW64\cmd.exe
                  "cmd.exe" /C chcp 65001 && netsh wlan show networks mode=bssid
                  3⤵
                    PID:4568
                    • C:\Windows\SysWOW64\chcp.com
                      chcp 65001
                      4⤵
                        PID:2300
                      • C:\Windows\SysWOW64\netsh.exe
                        netsh wlan show networks mode=bssid
                        4⤵
                        • Event Triggered Execution: Netsh Helper DLL
                        PID:3472
                  • C:\Users\Admin\AppData\Local\Temp\1932.tmp.svchost.exe
                    "C:\Users\Admin\AppData\Local\Temp\1932.tmp.svchost.exe"
                    2⤵
                    • Executes dropped EXE
                    PID:1808
                • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --no-startup-window
                  1⤵
                  • Suspicious behavior: EnumeratesProcesses
                  • Suspicious use of WriteProcessMemory
                  PID:684
                  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=crashpad-handler "--user-data-dir=C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data" /prefetch:4 --monitor-self-annotation=ptype=crashpad-handler "--database=C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Crashpad" --annotation=IsOfficialBuild=1 --annotation=channel= --annotation=chromium-version=122.0.6261.70 "--annotation=exe=C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --annotation=plat=Win64 "--annotation=prod=Microsoft Edge" --annotation=ver=122.0.2365.52 --initial-client-data=0x238,0x23c,0x240,0x234,0x2f4,0x7ffd3b3c2e98,0x7ffd3b3c2ea4,0x7ffd3b3c2eb0
                    2⤵
                      PID:2496
                    • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                      "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=gpu-process --no-appcompat-clear --gpu-preferences=WAAAAAAAAADgAAAMAAAAAAAAAAAAAAAAAABgAAAAAAA4AAAAAAAAAAAAAAAEAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAGAAAAAAAAAAYAAAAAAAAAAgAAAAAAAAACAAAAAAAAAAIAAAAAAAAAA== --mojo-platform-channel-handle=2276 --field-trial-handle=2280,i,4114443225282860369,4764091921472631035,262144 --variations-seed-version /prefetch:2
                      2⤵
                      • Suspicious behavior: EnumeratesProcesses
                      PID:2280
                    • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                      "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --no-appcompat-clear --mojo-platform-channel-handle=3220 --field-trial-handle=2280,i,4114443225282860369,4764091921472631035,262144 --variations-seed-version /prefetch:3
                      2⤵
                      • Suspicious behavior: EnumeratesProcesses
                      PID:408
                    • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                      "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=storage.mojom.StorageService --lang=en-US --service-sandbox-type=service --no-appcompat-clear --mojo-platform-channel-handle=3480 --field-trial-handle=2280,i,4114443225282860369,4764091921472631035,262144 --variations-seed-version /prefetch:8
                      2⤵
                        PID:3436
                      • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                        "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --instant-process --no-appcompat-clear --lang=en-US --js-flags=--ms-user-locale= --device-scale-factor=1 --num-raster-threads=1 --renderer-client-id=11 --mojo-platform-channel-handle=5312 --field-trial-handle=2280,i,4114443225282860369,4764091921472631035,262144 --variations-seed-version /prefetch:1
                        2⤵
                        • Suspicious behavior: EnumeratesProcesses
                        PID:2524
                      • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                        "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --no-appcompat-clear --lang=en-US --js-flags=--ms-user-locale= --device-scale-factor=1 --num-raster-threads=1 --renderer-client-id=12 --mojo-platform-channel-handle=5324 --field-trial-handle=2280,i,4114443225282860369,4764091921472631035,262144 --variations-seed-version /prefetch:1
                        2⤵
                        • Suspicious behavior: EnumeratesProcesses
                        PID:4288
                      • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                        "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=storage.mojom.StorageService --lang=en-US --service-sandbox-type=service --no-appcompat-clear --mojo-platform-channel-handle=3468 --field-trial-handle=2280,i,4114443225282860369,4764091921472631035,262144 --variations-seed-version /prefetch:8
                        2⤵
                          PID:3232
                        • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                          "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4700 --field-trial-handle=2280,i,4114443225282860369,4764091921472631035,262144 --variations-seed-version /prefetch:8
                          2⤵
                            PID:3336

                        Network

                              MITRE ATT&CK Enterprise v15

                              Replay Monitor

                              Loading Replay Monitor...

                              Downloads

                              Network Persistent State

                              • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Network\Network Persistent State
                              • Size 1KB
                              • SHA256 40b699f4d64261b9802580be4e723fed50af6e081a6453e2eabbf9c58eb29012
                              • MD5 SHA1 SHA512

                              17AB.tmp.Serverssss.exe

                              • Path C:\Users\Admin\AppData\Local\Temp\17AB.tmp.Serverssss.exe
                              • Size 175KB
                              • SHA256 817940c9dd88c9d185f58532e2027e9df7bfaca8249ec96ae055da03c8750f20
                              • MD5 SHA1 SHA512 SSDEEP

                              DC6.tmp.svchost.exe

                              • Path C:\Users\Admin\AppData\Local\Temp\DC6.tmp.svchost.exe
                              • Size 47KB
                              • SHA256 9c457b1cd061ae951fbed7841149b247e085befa6e2c5170058ce35cdebce548
                              • MD5 SHA1 SHA512 SSDEEP

                              TH6E1.tmp

                              • Path C:\Users\Admin\AppData\Local\Temp\TH6E1.tmp
                              • Size 222KB
                              • SHA256 f097a2cdef650eddd702047ae31625bafedd92099b92c1cfc61be73e636ed152
                              • MD5 SHA1 SHA512 SSDEEP

                              tmp4D7F.tmp.bat

                              • Path C:\Users\Admin\AppData\Local\Temp\tmp4D7F.tmp.bat
                              • Size 151B
                              • SHA256 dd82e69f788b551c42ee824d773b724950d86511ff3e8a7e1709a926f08e57d8
                              • MD5 SHA1 SHA512

                              msgid.dat

                              • Path C:\Users\Admin\AppData\Local\ae2b3b02108afcee055284706dff9e4a\msgid.dat
                              • Size 1B
                              • SHA256 5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9
                              • MD5 SHA1 SHA512

                              Bookmarks.txt

                              • Path C:\Users\Admin\AppData\Local\d0448a264e9ef0baf128e2d49c44d784\Admin@OAILVCNY_en-US\Browsers\Firefox\Bookmarks.txt
                              • Size 105B
                              • SHA256 c84c98bbf5e0ef9c8d0708b5d60c5bb656b7d6be5135d7f7a8d25557e08cf142
                              • MD5 SHA1 SHA512

                              Process.txt

                              • Path C:\Users\Admin\AppData\Local\d0448a264e9ef0baf128e2d49c44d784\Admin@OAILVCNY_en-US\System\Process.txt
                              • Size 4KB
                              • SHA256 ad7217e70adbbee374d0a8a44528b4e68706a03daf09f06e2172009620728409
                              • MD5 SHA1 SHA512 SSDEEP

                              Service_Adobe.exe

                              • Path C:\Users\Admin\AppData\Roaming\Adobe\Service_Adobe.exe
                              • Size 222KB
                              • SHA256 bfc572da40fc3dcbee2ff5590ad5f630becf69e18df37b44140bd4f214facf56
                              • MD5 SHA1 SHA512 SSDEEP

                              memory/2364-102-0x0000000004C70000-0x0000000004CD6000-memory.dmp

                              memory/2364-88-0x0000000000190000-0x00000000001C2000-memory.dmp

                              memory/2364-272-0x0000000005C40000-0x0000000005C52000-memory.dmp

                              memory/2364-266-0x0000000005080000-0x000000000508A000-memory.dmp

                              memory/2364-260-0x0000000006110000-0x00000000066B4000-memory.dmp

                              memory/2364-259-0x0000000005AC0000-0x0000000005B52000-memory.dmp

                              memory/3300-62-0x00007FFD5D3C0000-0x00007FFD5D3C1000-memory.dmp

                              memory/3300-107-0x00000000033C0000-0x0000000003411000-memory.dmp

                              memory/3300-106-0x0000000003170000-0x000000000318A000-memory.dmp

                              memory/3300-50-0x00000000033C0000-0x0000000003411000-memory.dmp

                              memory/3300-46-0x0000000002FD0000-0x0000000002FE6000-memory.dmp

                              memory/3300-53-0x00000000033C0000-0x0000000003411000-memory.dmp

                              memory/3300-52-0x0000000003170000-0x000000000318A000-memory.dmp

                              memory/3300-48-0x00000000031C0000-0x0000000003202000-memory.dmp

                              memory/3812-96-0x00000000057D0000-0x000000000586C000-memory.dmp

                              memory/3812-89-0x0000000000AD0000-0x0000000000AE2000-memory.dmp