Analysis

  • max time kernel
    143s
  • max time network
    148s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    13-08-2024 19:47

General

  • Target

    WinRAR 7.01 Pro.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) 8 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\WinRAR 7.01 Pro.exe
    "C:\Users\Admin\AppData\Local\Temp\WinRAR 7.01 Pro.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4232
    • 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:592
    • 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:2196
      • 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:5436
        • C:\Windows\SysWOW64\chcp.com
          chcp 65001
          4⤵
          • System Location Discovery: System Language Discovery
          PID:5576
        • 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:556
        • C:\Windows\SysWOW64\findstr.exe
          findstr All
          4⤵
          • System Location Discovery: System Language Discovery
          PID:2368
      • 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:5208
        • C:\Windows\SysWOW64\chcp.com
          chcp 65001
          4⤵
          • System Location Discovery: System Language Discovery
          PID:5712
        • 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:5744

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\7b09d57dff625c59e41b5d8cc41e4ef2\Admin@ERHQJVYQ_en-US\Browsers\Firefox\Bookmarks.txt

    Filesize

    105B

    MD5

    2e9d094dda5cdc3ce6519f75943a4ff4

    SHA1

    5d989b4ac8b699781681fe75ed9ef98191a5096c

    SHA256

    c84c98bbf5e0ef9c8d0708b5d60c5bb656b7d6be5135d7f7a8d25557e08cf142

    SHA512

    d1f7eed00959e902bdb2125b91721460d3ff99f3bdfc1f2a343d4f58e8d4e5e5a06c0c6cdc0379211c94510f7c00d7a8b34fa7d0ca0c3d54cbbe878f1e9812b7

  • C:\Users\Admin\AppData\Local\7b09d57dff625c59e41b5d8cc41e4ef2\Admin@ERHQJVYQ_en-US\System\Process.txt

    Filesize

    4KB

    MD5

    a5d63ee6e131ccf02f59fe7777aff84e

    SHA1

    3de77f8c633d8411614f7b0e915642826c779fb8

    SHA256

    79cb60b2b27046dc9994ebd5ab0bc3afe9d53763583789014e1d5d08c8b30692

    SHA512

    b24c0bc19e87440462c1ef70eca9ecc2fca9660beb69b0699bb21f2e3080442eb9f5462340d8b07fc3262a9e76409c89683a9f5001198aea4379b3f97a1a43f0

  • 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\a88f79e67bdd207514f04badd41e2959\msgid.dat

    Filesize

    6B

    MD5

    1e45feec8e4e895ab673c1c4f5fd187c

    SHA1

    79e71fe8802446367fdb4f3ae1393edacdcc30d6

    SHA256

    e4a05a4cdf1485ff8fd9c1a8776b8a8352c476dd3fbb71bf0e1fbd1f45a3a044

    SHA512

    6bf440417882878746d40658d9058c9a40ecce38be749aca9bbddb3eb0308fa2d387207f3c71561e0e1f536bbfe8bd98d5b84def235fcaa503554a7affa623d9

  • memory/2196-91-0x0000000004BA0000-0x0000000004C7C000-memory.dmp

    Filesize

    880KB

  • memory/2196-37-0x0000000004BA0000-0x0000000004C7C000-memory.dmp

    Filesize

    880KB

  • memory/2196-29-0x0000000004BA0000-0x0000000004C82000-memory.dmp

    Filesize

    904KB

  • memory/2196-87-0x0000000004BA0000-0x0000000004C7C000-memory.dmp

    Filesize

    880KB

  • memory/2196-39-0x0000000004BA0000-0x0000000004C7C000-memory.dmp

    Filesize

    880KB

  • memory/2196-55-0x0000000004BA0000-0x0000000004C7C000-memory.dmp

    Filesize

    880KB

  • memory/2196-53-0x0000000004BA0000-0x0000000004C7C000-memory.dmp

    Filesize

    880KB

  • memory/2196-49-0x0000000004BA0000-0x0000000004C7C000-memory.dmp

    Filesize

    880KB

  • memory/2196-47-0x0000000004BA0000-0x0000000004C7C000-memory.dmp

    Filesize

    880KB

  • memory/2196-45-0x0000000004BA0000-0x0000000004C7C000-memory.dmp

    Filesize

    880KB

  • memory/2196-89-0x0000000004BA0000-0x0000000004C7C000-memory.dmp

    Filesize

    880KB

  • memory/2196-35-0x0000000004BA0000-0x0000000004C7C000-memory.dmp

    Filesize

    880KB

  • memory/2196-85-0x0000000004BA0000-0x0000000004C7C000-memory.dmp

    Filesize

    880KB

  • memory/2196-33-0x0000000004BA0000-0x0000000004C7C000-memory.dmp

    Filesize

    880KB

  • memory/2196-43-0x0000000004BA0000-0x0000000004C7C000-memory.dmp

    Filesize

    880KB

  • memory/2196-31-0x0000000004BA0000-0x0000000004C7C000-memory.dmp

    Filesize

    880KB

  • memory/2196-30-0x0000000004BA0000-0x0000000004C7C000-memory.dmp

    Filesize

    880KB

  • memory/2196-75-0x0000000004BA0000-0x0000000004C7C000-memory.dmp

    Filesize

    880KB

  • memory/2196-93-0x0000000004BA0000-0x0000000004C7C000-memory.dmp

    Filesize

    880KB

  • memory/2196-2439-0x0000000007030000-0x0000000007042000-memory.dmp

    Filesize

    72KB

  • memory/2196-41-0x0000000004BA0000-0x0000000004C7C000-memory.dmp

    Filesize

    880KB

  • memory/2196-28-0x0000000004D70000-0x0000000005314000-memory.dmp

    Filesize

    5.6MB

  • memory/2196-51-0x0000000004BA0000-0x0000000004C7C000-memory.dmp

    Filesize

    880KB

  • memory/2196-83-0x0000000004BA0000-0x0000000004C7C000-memory.dmp

    Filesize

    880KB

  • memory/2196-81-0x0000000004BA0000-0x0000000004C7C000-memory.dmp

    Filesize

    880KB

  • memory/2196-79-0x0000000004BA0000-0x0000000004C7C000-memory.dmp

    Filesize

    880KB

  • memory/2196-78-0x0000000004BA0000-0x0000000004C7C000-memory.dmp

    Filesize

    880KB

  • memory/2196-73-0x0000000004BA0000-0x0000000004C7C000-memory.dmp

    Filesize

    880KB

  • memory/2196-71-0x0000000004BA0000-0x0000000004C7C000-memory.dmp

    Filesize

    880KB

  • memory/2196-69-0x0000000004BA0000-0x0000000004C7C000-memory.dmp

    Filesize

    880KB

  • memory/2196-67-0x0000000004BA0000-0x0000000004C7C000-memory.dmp

    Filesize

    880KB

  • memory/2196-65-0x0000000004BA0000-0x0000000004C7C000-memory.dmp

    Filesize

    880KB

  • memory/2196-63-0x0000000004BA0000-0x0000000004C7C000-memory.dmp

    Filesize

    880KB

  • memory/2196-61-0x0000000004BA0000-0x0000000004C7C000-memory.dmp

    Filesize

    880KB

  • memory/2196-59-0x0000000004BA0000-0x0000000004C7C000-memory.dmp

    Filesize

    880KB

  • memory/2196-57-0x0000000004BA0000-0x0000000004C7C000-memory.dmp

    Filesize

    880KB

  • memory/2196-2278-0x00000000046B0000-0x00000000046E0000-memory.dmp

    Filesize

    192KB

  • memory/2196-2279-0x00000000056F0000-0x0000000005756000-memory.dmp

    Filesize

    408KB

  • memory/2196-27-0x0000000004C90000-0x0000000004D74000-memory.dmp

    Filesize

    912KB

  • memory/2196-2433-0x00000000066D0000-0x00000000066DA000-memory.dmp

    Filesize

    40KB

  • memory/2196-2429-0x00000000064A0000-0x0000000006532000-memory.dmp

    Filesize

    584KB

  • memory/4232-2-0x0000000005C50000-0x0000000005CEC000-memory.dmp

    Filesize

    624KB

  • memory/4232-1-0x0000000000D80000-0x00000000011D2000-memory.dmp

    Filesize

    4.3MB

  • memory/4232-0-0x00000000749DE000-0x00000000749DF000-memory.dmp

    Filesize

    4KB