Analysis

  • max time kernel
    149s
  • max time network
    142s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    14-08-2024 01:26

General

  • Target

    e3635b82438e536636955e2fee251073b1038a7e00295a1e0efb003ad49965d5.exe

  • Size

    4.3MB

  • MD5

    1c8908102946928867ab16f2007b35cc

  • SHA1

    7e08b98299e0195a013e53221e3c2efb149eb4ce

  • SHA256

    e3635b82438e536636955e2fee251073b1038a7e00295a1e0efb003ad49965d5

  • SHA512

    a559caedc7b00da23cb18607d0f2f05c6954a949dff0c8a4c25f6353163b70fd16722728878bb87c9db5cff86dc0252f967ebc26a66cb975af85f1361372a734

  • SSDEEP

    98304:DaxGFtNdBfKEgzVQYAO52weo3VudIlHSTNWA0rkjEaxKd:DRdytzAO52wLVu2oBWv7t

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/bot5912059723:AAEvmpZvnGHJALjBBXk_PBuStnzDRsTe4-M/sendMessage?chat_id=750182271

Mutex

AsyncMutex_6SI8OkPnk

Attributes
  • delay

    3

  • install

    false

  • 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 1 IoCs
  • Async RAT payload 1 IoCs
  • Credentials from Password Stores: Credentials from Web Browsers 1 TTPs

    Malicious Access or copy of Web Browser Credential store.

  • .NET Reactor proctector 35 IoCs

    Detects an executable protected by an unregistered version of Eziriz's .NET Reactor.

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 2 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • Drops desktop.ini file(s) 9 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.

  • Browser Information Discovery 1 TTPs

    Enumerate browser information.

  • 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.

  • System Location Discovery: System Language Discovery 1 TTPs 9 IoCs

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

  • System Network Configuration Discovery: Wi-Fi Discovery 1 TTPs 2 IoCs

    Adversaries may search for information about Wi-Fi networks, such as network names and passwords, on compromised systems.

  • Checks processor information in registry 2 TTPs 2 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 25 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 26 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\e3635b82438e536636955e2fee251073b1038a7e00295a1e0efb003ad49965d5.exe
    "C:\Users\Admin\AppData\Local\Temp\e3635b82438e536636955e2fee251073b1038a7e00295a1e0efb003ad49965d5.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1280
    • C:\Users\Admin\AppData\Local\Temp\winrar_x64_701ar.exe
      "C:\Users\Admin\AppData\Local\Temp\winrar_x64_701ar.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetWindowsHookEx
      PID:3584
    • C:\Users\Admin\AppData\Local\Temp\_microsoft_corporation.exe
      "C:\Users\Admin\AppData\Local\Temp\_microsoft_corporation.exe"
      2⤵
      • Executes dropped EXE
      • Drops desktop.ini file(s)
      • System Location Discovery: System Language Discovery
      • Checks processor information in registry
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:3100
      • C:\Windows\SysWOW64\cmd.exe
        "cmd.exe" /C chcp 65001 && netsh wlan show profile | findstr All
        3⤵
        • System Location Discovery: System Language Discovery
        • System Network Configuration Discovery: Wi-Fi Discovery
        • Suspicious use of WriteProcessMemory
        PID:5352
        • C:\Windows\SysWOW64\chcp.com
          chcp 65001
          4⤵
          • System Location Discovery: System Language Discovery
          PID:5844
        • C:\Windows\SysWOW64\netsh.exe
          netsh wlan show profile
          4⤵
          • Event Triggered Execution: Netsh Helper DLL
          • System Location Discovery: System Language Discovery
          • System Network Configuration Discovery: Wi-Fi Discovery
          PID:5876
        • C:\Windows\SysWOW64\findstr.exe
          findstr All
          4⤵
          • System Location Discovery: System Language Discovery
          PID:5888
      • C:\Windows\SysWOW64\cmd.exe
        "cmd.exe" /C chcp 65001 && netsh wlan show networks mode=bssid
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:5368
        • C:\Windows\SysWOW64\chcp.com
          chcp 65001
          4⤵
          • System Location Discovery: System Language Discovery
          PID:5084
        • C:\Windows\SysWOW64\netsh.exe
          netsh wlan show networks mode=bssid
          4⤵
          • Event Triggered Execution: Netsh Helper DLL
          • System Location Discovery: System Language Discovery
          PID:1140

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\2d36cc9d40bd48127a0b54f637b5251f\msgid.dat

    Filesize

    6B

    MD5

    c417ae1e153dcef5d3f4c03d326fec02

    SHA1

    fa8ac6f47be77d0b17c4a2a1ef2e563748750bbe

    SHA256

    9e67f26ef5e2613063e20c2c84630e21b607f2da1100d1992894b3ecf7a7ddf2

    SHA512

    9716dea64d6fe48a860fcc54e1d8c629712f7a33fc984dd1ef648ab24966823a8eff3408e9af1f29d5c4fd4f01daa2bafab59b1994cd79a968996e0559a3b37a

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

    Filesize

    487KB

    MD5

    b2795fbed63c8c1b0846b3eaeae2fe0f

    SHA1

    d1145cff21e008c9ad581ccf1719139d754355de

    SHA256

    5ea467d548d41b747370a235c9a245910ed58d55482a48246196faf391213c24

    SHA512

    47ffcc3c74113db4c389ba9a6b5db7ce325d1f63e431405a9f6613918c387de4a677f20804aad6aa458bf2151de418c2f72740f4f5083fb45bf6c4b0f564e564

  • C:\Users\Admin\AppData\Local\Temp\winrar_x64_701ar.exe

    Filesize

    3.8MB

    MD5

    5e2849bef6a38ed0b163ea6128afea01

    SHA1

    d77e1467dcd5e6662a6b97de35cb017579af032a

    SHA256

    6ec13e13059bac123d839fde5770db2c87248ef862d21f5f818580287a365026

    SHA512

    e20bcb346b114c5e6f8f0e82d2143a7c02ffc77056983336a011fbe8e292d8fa0ed8d2aebaa6f665ffacfa1063f59a2788bc68bbe2605316d7791eec3a1e1cfb

  • C:\Users\Admin\AppData\Local\c09dc33cc97a01ce6a55dd66965683f5\Admin@ZEUYFSYD_en-US\Browsers\Firefox\Bookmarks.txt

    Filesize

    105B

    MD5

    2e9d094dda5cdc3ce6519f75943a4ff4

    SHA1

    5d989b4ac8b699781681fe75ed9ef98191a5096c

    SHA256

    c84c98bbf5e0ef9c8d0708b5d60c5bb656b7d6be5135d7f7a8d25557e08cf142

    SHA512

    d1f7eed00959e902bdb2125b91721460d3ff99f3bdfc1f2a343d4f58e8d4e5e5a06c0c6cdc0379211c94510f7c00d7a8b34fa7d0ca0c3d54cbbe878f1e9812b7

  • C:\Users\Admin\AppData\Local\c09dc33cc97a01ce6a55dd66965683f5\Admin@ZEUYFSYD_en-US\System\Process.txt

    Filesize

    4KB

    MD5

    6e7e64564276a0217c9c06bf04f86a83

    SHA1

    4425328a649f67e7420a99b8575686bd563a3cce

    SHA256

    2dd396d495c3b327189752e968a2fd620e5178677fc8066aff694a54cee69521

    SHA512

    4ec1a94c9f1bbb04e343b00f0a775359b0105983e06d9dcc1490902fd54a22a73d6e8a33f597cb023dff5d24fee6962245e9a550c53a8e5b0d5085885db2e7d1

  • memory/1280-0-0x0000000074DCE000-0x0000000074DCF000-memory.dmp

    Filesize

    4KB

  • memory/1280-1-0x0000000000DC0000-0x0000000001212000-memory.dmp

    Filesize

    4.3MB

  • memory/1280-2-0x0000000005C60000-0x0000000005CFC000-memory.dmp

    Filesize

    624KB

  • memory/3100-65-0x0000000004B80000-0x0000000004C5C000-memory.dmp

    Filesize

    880KB

  • memory/3100-47-0x0000000004B80000-0x0000000004C5C000-memory.dmp

    Filesize

    880KB

  • memory/3100-49-0x0000000004B80000-0x0000000004C5C000-memory.dmp

    Filesize

    880KB

  • memory/3100-75-0x0000000004B80000-0x0000000004C5C000-memory.dmp

    Filesize

    880KB

  • memory/3100-93-0x0000000004B80000-0x0000000004C5C000-memory.dmp

    Filesize

    880KB

  • memory/3100-91-0x0000000004B80000-0x0000000004C5C000-memory.dmp

    Filesize

    880KB

  • memory/3100-89-0x0000000004B80000-0x0000000004C5C000-memory.dmp

    Filesize

    880KB

  • memory/3100-87-0x0000000004B80000-0x0000000004C5C000-memory.dmp

    Filesize

    880KB

  • memory/3100-85-0x0000000004B80000-0x0000000004C5C000-memory.dmp

    Filesize

    880KB

  • memory/3100-83-0x0000000004B80000-0x0000000004C5C000-memory.dmp

    Filesize

    880KB

  • memory/3100-81-0x0000000004B80000-0x0000000004C5C000-memory.dmp

    Filesize

    880KB

  • memory/3100-79-0x0000000004B80000-0x0000000004C5C000-memory.dmp

    Filesize

    880KB

  • memory/3100-77-0x0000000004B80000-0x0000000004C5C000-memory.dmp

    Filesize

    880KB

  • memory/3100-73-0x0000000004B80000-0x0000000004C5C000-memory.dmp

    Filesize

    880KB

  • memory/3100-71-0x0000000004B80000-0x0000000004C5C000-memory.dmp

    Filesize

    880KB

  • memory/3100-69-0x0000000004B80000-0x0000000004C5C000-memory.dmp

    Filesize

    880KB

  • memory/3100-35-0x0000000004B80000-0x0000000004C5C000-memory.dmp

    Filesize

    880KB

  • memory/3100-59-0x0000000004B80000-0x0000000004C5C000-memory.dmp

    Filesize

    880KB

  • memory/3100-55-0x0000000004B80000-0x0000000004C5C000-memory.dmp

    Filesize

    880KB

  • memory/3100-53-0x0000000004B80000-0x0000000004C5C000-memory.dmp

    Filesize

    880KB

  • memory/3100-52-0x0000000004B80000-0x0000000004C5C000-memory.dmp

    Filesize

    880KB

  • memory/3100-30-0x0000000004B80000-0x0000000004C5C000-memory.dmp

    Filesize

    880KB

  • memory/3100-45-0x0000000004B80000-0x0000000004C5C000-memory.dmp

    Filesize

    880KB

  • memory/3100-43-0x0000000004B80000-0x0000000004C5C000-memory.dmp

    Filesize

    880KB

  • memory/3100-41-0x0000000004B80000-0x0000000004C5C000-memory.dmp

    Filesize

    880KB

  • memory/3100-39-0x0000000004B80000-0x0000000004C5C000-memory.dmp

    Filesize

    880KB

  • memory/3100-37-0x0000000004B80000-0x0000000004C5C000-memory.dmp

    Filesize

    880KB

  • memory/3100-33-0x0000000004B80000-0x0000000004C5C000-memory.dmp

    Filesize

    880KB

  • memory/3100-67-0x0000000004B80000-0x0000000004C5C000-memory.dmp

    Filesize

    880KB

  • memory/3100-31-0x0000000004B80000-0x0000000004C5C000-memory.dmp

    Filesize

    880KB

  • memory/3100-63-0x0000000004B80000-0x0000000004C5C000-memory.dmp

    Filesize

    880KB

  • memory/3100-61-0x0000000004B80000-0x0000000004C5C000-memory.dmp

    Filesize

    880KB

  • memory/3100-57-0x0000000004B80000-0x0000000004C5C000-memory.dmp

    Filesize

    880KB

  • memory/3100-2278-0x00000000045D0000-0x0000000004600000-memory.dmp

    Filesize

    192KB

  • memory/3100-2279-0x0000000005590000-0x00000000055F6000-memory.dmp

    Filesize

    408KB

  • memory/3100-29-0x0000000004B80000-0x0000000004C62000-memory.dmp

    Filesize

    904KB

  • memory/3100-2429-0x0000000006450000-0x00000000064E2000-memory.dmp

    Filesize

    584KB

  • memory/3100-2433-0x0000000006580000-0x000000000658A000-memory.dmp

    Filesize

    40KB

  • memory/3100-28-0x0000000004D50000-0x00000000052F4000-memory.dmp

    Filesize

    5.6MB

  • memory/3100-2439-0x00000000066A0000-0x00000000066B2000-memory.dmp

    Filesize

    72KB

  • memory/3100-27-0x0000000004C70000-0x0000000004D54000-memory.dmp

    Filesize

    912KB