Resubmissions

18-12-2024 14:46

241218-r5shsasndt 10

18-12-2024 14:46

241218-r49qnssncw 10

18-12-2024 14:15

241218-rknn4a1res 10

Analysis

  • max time kernel
    140s
  • max time network
    150s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    18-12-2024 14:46

General

  • Target

    b6c58155365a5e35952e46611fd7b43e36e256903bff2030bc07a3c6841b836f.exe

  • Size

    45KB

  • MD5

    7ace559d317742937e8254dc6da92a7e

  • SHA1

    e4986e5b11b96bedc62af5cfb3b48bed58d8d1c9

  • SHA256

    b6c58155365a5e35952e46611fd7b43e36e256903bff2030bc07a3c6841b836f

  • SHA512

    2c50337078075dc6bfd8b02d77d4de8e5b9ad5b01deed1a3b4f3eb0b2d21efce2736e74d5cf94fdf937bcc2a51c2ecf98022049c706350feacb079c4b968d5d3

  • SSDEEP

    768:hukaVT3ongoWU2zjimo2qrrKjGKG6PIyzjbFgX3ij8z+vfYO4qHBDZMhd:hukaVT3QR2mKYDy3bCXSjlfYQdMd

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

Default

C2

96.248.52.125:8031

Mutex

adobe_6SI8OkPnk

Attributes
  • delay

    3

  • install

    true

  • install_file

    update.exe

  • install_folder

    %Temp%

aes.plain

Signatures

  • AsyncRat

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

  • Asyncrat family
  • Async RAT payload 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • Browser Information Discovery 1 TTPs

    Enumerate browser information.

  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 7 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Delays execution with timeout.exe 1 IoCs
  • Enumerates system info in registry 2 TTPs 4 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: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 35 IoCs
  • Suspicious use of SendNotifyMessage 32 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b6c58155365a5e35952e46611fd7b43e36e256903bff2030bc07a3c6841b836f.exe
    "C:\Users\Admin\AppData\Local\Temp\b6c58155365a5e35952e46611fd7b43e36e256903bff2030bc07a3c6841b836f.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:328
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "update" /tr '"C:\Users\Admin\AppData\Local\Temp\update.exe"' & exit
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2528
      • C:\Windows\SysWOW64\schtasks.exe
        schtasks /create /f /sc onlogon /rl highest /tn "update" /tr '"C:\Users\Admin\AppData\Local\Temp\update.exe"'
        3⤵
        • System Location Discovery: System Language Discovery
        • Scheduled Task/Job: Scheduled Task
        PID:2884
    • C:\Windows\SysWOW64\cmd.exe
      cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmpC487.tmp.bat""
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:756
      • C:\Windows\SysWOW64\timeout.exe
        timeout 3
        3⤵
        • System Location Discovery: System Language Discovery
        • Delays execution with timeout.exe
        PID:2924
      • C:\Users\Admin\AppData\Local\Temp\update.exe
        "C:\Users\Admin\AppData\Local\Temp\update.exe"
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        • Suspicious use of AdjustPrivilegeToken
        PID:2012
  • C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE
    "C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE" /dde
    1⤵
    • System Location Discovery: System Language Discovery
    • Enumerates system info in registry
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of SetWindowsHookEx
    PID:2952
  • C:\Program Files\Google\Chrome\Application\chrome.exe
    "C:\Program Files\Google\Chrome\Application\chrome.exe"
    1⤵
    • Enumerates system info in registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of WriteProcessMemory
    PID:2600
    • C:\Program Files\Google\Chrome\Application\chrome.exe
      "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=crashpad-handler "--user-data-dir=C:\Users\Admin\AppData\Local\Google\Chrome\User Data" /prefetch:7 --monitor-self-annotation=ptype=crashpad-handler "--database=C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Crashpad" "--metrics-dir=C:\Users\Admin\AppData\Local\Google\Chrome\User Data" --url=https://clients2.google.com/cr/report --annotation=channel= --annotation=plat=Win64 --annotation=prod=Chrome --annotation=ver=106.0.5249.119 --initial-client-data=0xc0,0xc4,0xc8,0x94,0xcc,0x7fef6d59758,0x7fef6d59768,0x7fef6d59778
      2⤵
        PID:2652
      • C:\Program Files\Google\Chrome\Application\chrome.exe
        "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=gpu-process --gpu-preferences=UAAAAAAAAADgAAAYAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAAAQAAAAAAAAAAAAAAAAAAAAAAAAAEgAAAAAAAAASAAAAAAAAAAYAAAAAgAAABAAAAAAAAAAGAAAAAAAAAAQAAAAAAAAAAAAAAAOAAAAEAAAAAAAAAABAAAADgAAAAgAAAAAAAAACAAAAAAAAAA= --mojo-platform-channel-handle=1156 --field-trial-handle=1288,i,12702002968290367923,6427027989576050161,131072 /prefetch:2
        2⤵
          PID:2124
        • C:\Program Files\Google\Chrome\Application\chrome.exe
          "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=1520 --field-trial-handle=1288,i,12702002968290367923,6427027989576050161,131072 /prefetch:8
          2⤵
            PID:1428
          • C:\Program Files\Google\Chrome\Application\chrome.exe
            "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=storage.mojom.StorageService --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=1600 --field-trial-handle=1288,i,12702002968290367923,6427027989576050161,131072 /prefetch:8
            2⤵
              PID:1940
            • C:\Program Files\Google\Chrome\Application\chrome.exe
              "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --display-capture-permissions-policy-allowed --first-renderer-process --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=6 --mojo-platform-channel-handle=2188 --field-trial-handle=1288,i,12702002968290367923,6427027989576050161,131072 /prefetch:1
              2⤵
                PID:2464
              • C:\Program Files\Google\Chrome\Application\chrome.exe
                "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --display-capture-permissions-policy-allowed --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=5 --mojo-platform-channel-handle=2176 --field-trial-handle=1288,i,12702002968290367923,6427027989576050161,131072 /prefetch:1
                2⤵
                  PID:2472
                • C:\Program Files\Google\Chrome\Application\chrome.exe
                  "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=gpu-process --gpu-preferences=UAAAAAAAAADgAAAYAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAAAQAAAAAAAAAAAAAAAAAAAAAAAAAEgAAAAAAAAASAAAAAAAAAAYAAAAAgAAABAAAAAAAAAAGAAAAAAAAAAQAAAAAAAAAAAAAAAOAAAAEAAAAAAAAAABAAAADgAAAAgAAAAAAAAACAAAAAAAAAA= --use-gl=angle --use-angle=swiftshader-webgl --mojo-platform-channel-handle=1036 --field-trial-handle=1288,i,12702002968290367923,6427027989576050161,131072 /prefetch:2
                  2⤵
                    PID:2900
                  • C:\Program Files\Google\Chrome\Application\chrome.exe
                    "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --display-capture-permissions-policy-allowed --disable-gpu-compositing --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=8 --mojo-platform-channel-handle=1308 --field-trial-handle=1288,i,12702002968290367923,6427027989576050161,131072 /prefetch:1
                    2⤵
                      PID:1396
                    • C:\Program Files\Google\Chrome\Application\chrome.exe
                      "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=chrome.mojom.UtilWin --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=3680 --field-trial-handle=1288,i,12702002968290367923,6427027989576050161,131072 /prefetch:8
                      2⤵
                        PID:2976
                      • C:\Program Files\Google\Chrome\Application\chrome.exe
                        "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --display-capture-permissions-policy-allowed --disable-gpu-compositing --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=10 --mojo-platform-channel-handle=3716 --field-trial-handle=1288,i,12702002968290367923,6427027989576050161,131072 /prefetch:1
                        2⤵
                          PID:328
                      • C:\Program Files\Google\Chrome\Application\106.0.5249.119\elevation_service.exe
                        "C:\Program Files\Google\Chrome\Application\106.0.5249.119\elevation_service.exe"
                        1⤵
                          PID:576

                        Network

                        MITRE ATT&CK Enterprise v15

                        Replay Monitor

                        Loading Replay Monitor...

                        Downloads

                        • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Cache\Cache_Data\f_000001

                          Filesize

                          215KB

                          MD5

                          d79b35ccf8e6af6714eb612714349097

                          SHA1

                          eb3ccc9ed29830df42f3fd129951cb8b791aaf98

                          SHA256

                          c8459799169b81fdab64d028a9ebb058ea2d0ad5feb33a11f6a45a54a5ccc365

                          SHA512

                          f4be1c1e192a700139d7cff5059af81c0234ed5f032796036a1a4879b032ce4eedd16a121bbf776f17bc84a0012846f467ad48b46db4008841c25b779c7d8f5a

                        • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\GCM Store\Encryption\000006.dbtmp

                          Filesize

                          16B

                          MD5

                          aefd77f47fb84fae5ea194496b44c67a

                          SHA1

                          dcfbb6a5b8d05662c4858664f81693bb7f803b82

                          SHA256

                          4166bf17b2da789b0d0cc5c74203041d98005f5d4ef88c27e8281e00148cd611

                          SHA512

                          b733d502138821948267a8b27401d7c0751e590e1298fda1428e663ccd02f55d0d2446ff4bc265bdcdc61f952d13c01524a5341bc86afc3c2cde1d8589b2e1c3

                        • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\GPUCache\data_1

                          Filesize

                          264KB

                          MD5

                          f50f89a0a91564d0b8a211f8921aa7de

                          SHA1

                          112403a17dd69d5b9018b8cede023cb3b54eab7d

                          SHA256

                          b1e963d702392fb7224786e7d56d43973e9b9efd1b89c17814d7c558ffc0cdec

                          SHA512

                          bf8cda48cf1ec4e73f0dd1d4fa5562af1836120214edb74957430cd3e4a2783e801fa3f4ed2afb375257caeed4abe958265237d6e0aacf35a9ede7a2e8898d58

                        • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Preferences

                          Filesize

                          5KB

                          MD5

                          987b2e427732ab24e65a949c420cc648

                          SHA1

                          05379fd37836df005eca7a861ea4004460ddbd9d

                          SHA256

                          1d0622c732db7519210b6175f885acabe27d25f4ba4b73b2a73eb7e863e3a61f

                          SHA512

                          01116ce8fde6c8ac3ab18b76c759e81b8020fec63094d2ae63fe393a9a90f1db652b20ef63ee1300a06633a234da8d472ee3b10787160bab6026dac93792f100

                        • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Preferences

                          Filesize

                          5KB

                          MD5

                          875c42d6a9a6974fa918e77b00c10ace

                          SHA1

                          b7d94bb15341a810506d35c3fa9138256cba99a0

                          SHA256

                          3ecf23d9b5366fa43fb6b3a622621815a3fc83c2d47684da1ecc43ace7e2c0dc

                          SHA512

                          bbeb5c26b19b20df92a9acacbeb237d981f367be9902f8a385350bab503515ab8385ea8f8b61dc6696162b39c1bdee1830c6af6a5e05bb09fdf1c5f5eccae896

                        • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Sync Data\LevelDB\000007.dbtmp

                          Filesize

                          16B

                          MD5

                          18e723571b00fb1694a3bad6c78e4054

                          SHA1

                          afcc0ef32d46fe59e0483f9a3c891d3034d12f32

                          SHA256

                          8af72f43857550b01eab1019335772b367a17a9884a7a759fdf4fe6f272b90aa

                          SHA512

                          43bb0af7d3984012d2d67ca6b71f0201e5b948e6fe26a899641c4c6f066c59906d468ddf7f1df5ea5fa33c2bc5ea8219c0f2c82e0a5c365ad7581b898a8859e2

                        • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Local State

                          Filesize

                          345KB

                          MD5

                          c86eaeb1d7023b36d49b4c5d427733f3

                          SHA1

                          347c96effd2297ade73a76eee28ac7542b55d963

                          SHA256

                          325d16428110f3ab195b709cda7fd28e51cd561a7efc47b7d8162381a01a25de

                          SHA512

                          c557ba03c0035a279ace68a7feb921802a86c73dd524d3b3e94376d6d8b21ea59d8931b10cf2e32916a9c100562fec6318d4bcc8f8939720a8a81a08b67f1be0

                        • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\d1a524ed-1782-4cec-a6b1-d8276aa39c53.tmp

                          Filesize

                          345KB

                          MD5

                          57404f7eab1aa4e9d5f8243e9b614af1

                          SHA1

                          f559c2be23105ea14176a092bbdf60530c99488d

                          SHA256

                          7712cfda4eb7c82fe2e5c92aa173603e9180de90ebf65d82c467b3750973ae61

                          SHA512

                          15872c09db883bb78e77e8fe304eace631984ee573d7156e849a42637982cb205935a2e32a42f991f389f18562e655184ad0851ff5f104f48fd76888515b6bc0

                        • C:\Users\Admin\AppData\Local\Temp\tmpC487.tmp.bat

                          Filesize

                          153B

                          MD5

                          d96f28978b5851a04ac08c570c9b4fde

                          SHA1

                          ae07b82801efe11e76d907656efe550265026e26

                          SHA256

                          32f22d5487564587ac905224abf7a515f1119dc37a1af7cb84753e06a9b8b946

                          SHA512

                          a8fc15ac265c15d2a80fb0f4ff929402b5f2245f8cbdd284d78f00adfc0ab0246d8eee9c9d6fb18203b6fd8c73e4dbd545a4cfe6c9445c67d06ca14cad9c0d6d

                        • C:\Users\Admin\AppData\Roaming\Microsoft\Office\Recent\index.dat

                          Filesize

                          406B

                          MD5

                          e44cf8e42e754f1a57aa3c9b0ae0b8ca

                          SHA1

                          a0601d315fa97b165fd8987cecafbea19f690b74

                          SHA256

                          6fb7a8d29765429c3c2c957bcdaac3f60dc0e654ea4a72bb79dae0e710d4af9e

                          SHA512

                          6130c633182d897d1af3cfb27f3a55c7652a8b088661c57cedd94a4bf9b33274bf506972e6d026b3186a0a675016084cff133822890d5036caebe807711e6aa6

                        • \Users\Admin\AppData\Local\Temp\update.exe

                          Filesize

                          45KB

                          MD5

                          7ace559d317742937e8254dc6da92a7e

                          SHA1

                          e4986e5b11b96bedc62af5cfb3b48bed58d8d1c9

                          SHA256

                          b6c58155365a5e35952e46611fd7b43e36e256903bff2030bc07a3c6841b836f

                          SHA512

                          2c50337078075dc6bfd8b02d77d4de8e5b9ad5b01deed1a3b4f3eb0b2d21efce2736e74d5cf94fdf937bcc2a51c2ecf98022049c706350feacb079c4b968d5d3

                        • memory/328-0-0x00000000745EE000-0x00000000745EF000-memory.dmp

                          Filesize

                          4KB

                        • memory/328-11-0x00000000745E0000-0x0000000074CCE000-memory.dmp

                          Filesize

                          6.9MB

                        • memory/328-2-0x00000000745E0000-0x0000000074CCE000-memory.dmp

                          Filesize

                          6.9MB

                        • memory/328-1-0x0000000000E50000-0x0000000000E62000-memory.dmp

                          Filesize

                          72KB

                        • memory/2012-16-0x00000000002B0000-0x00000000002C2000-memory.dmp

                          Filesize

                          72KB

                        • memory/2952-30-0x000000005FFF0000-0x0000000060000000-memory.dmp

                          Filesize

                          64KB

                        • memory/2952-17-0x000000005FFF0000-0x0000000060000000-memory.dmp

                          Filesize

                          64KB