Analysis

  • max time kernel
    72s
  • max time network
    135s
  • platform
    windows7_x64
  • resource
    win7-20230220-en
  • resource tags

    arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
  • submitted
    30/05/2023, 06:54

General

  • Target

    RE facturas 55-23-.exe

  • Size

    736KB

  • MD5

    bfee2bc7e6193b914c419f6def71d567

  • SHA1

    5313ba5781a8bf704460f001d7bcdb6d7f37fa4f

  • SHA256

    308a5ed2f79e93b600af3147ea292f64636d31b858a27436d175b933400ead85

  • SHA512

    40625a0ceaaf9d04a084e5a137179a316aecd134615ed9d852dbf460dceae7d3f445ce7c03aa74a275449109746ce6dff94df52514a0c4d2a12d1560b4fcab3c

  • SSDEEP

    12288:Z3ZbakH2iNfmFx2iqNhujGjUDsBAYbXXVat+zVCrKrGdsuZhIOw3GyFjnEzFOz8/:Z3cs1lmFxUKsTVatN7yuZhSjEzFOz8

Malware Config

Extracted

Family

snakekeylogger

C2

https://api.telegram.org/bot5967839484:AAGJtiRve079uoreJ5X0WycNZ-zS90-jUJE/sendMessage?chat_id=5928418129

Signatures

  • Snake Keylogger

    Keylogger and Infostealer first seen in November 2020.

  • Snake Keylogger payload 7 IoCs
  • Reads data files stored by FTP clients 2 TTPs

    Tries to access configuration files associated with programs like FileZilla.

  • Reads user/profile data of local email clients 2 TTPs

    Email clients store some user data on disk where infostealers will often target it.

  • Reads user/profile data of web browsers 2 TTPs

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

  • Accesses Microsoft Outlook profiles 1 TTPs 3 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.

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

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

  • Creates scheduled task(s) 1 TTPs 1 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\RE facturas 55-23-.exe
    "C:\Users\Admin\AppData\Local\Temp\RE facturas 55-23-.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1300
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\RE facturas 55-23-.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1492
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\lnVxkRbaQiXQZC.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:556
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\lnVxkRbaQiXQZC" /XML "C:\Users\Admin\AppData\Local\Temp\tmpF577.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:2020
    • C:\Users\Admin\AppData\Local\Temp\RE facturas 55-23-.exe
      "C:\Users\Admin\AppData\Local\Temp\RE facturas 55-23-.exe"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • outlook_office_path
      • outlook_win_path
      PID:324

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmpF577.tmp

    Filesize

    1KB

    MD5

    948a0f88ef618dbfe58fdd316569cbc3

    SHA1

    0cf00c7493584e4af088044779a08210c45d27a1

    SHA256

    5a78a5309b11e6367c612511d3625baf4315c1bbd2ae11f8c4f84e1f882b0b1e

    SHA512

    0acc88297c998ec89b53627e15277cb9fc72ec6868aea3b3aa1073ae56ce7558fa6964ef732d8d7ca51198183dc648277ef77233120ad04a61a86a41f4c9a022

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\RXT3P8709HQ5DYLY8J4R.temp

    Filesize

    7KB

    MD5

    e5d8ed2db7610e306f07dba8525ba9f9

    SHA1

    9faf3d965ef41ed13be4a05845ea851c37a1bc1c

    SHA256

    a9360ac012f669998f87ded23a1a4865ee7de7138b2e87093ec1d4411de51f3c

    SHA512

    700a190957a5f1d9ed19bff43a869898968f86fbba636b8d33133a3de5210fc84e8c3c511c110494ad8fa4fba964adacd0967fa509fce1f752990300b95eb72f

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms

    Filesize

    7KB

    MD5

    e5d8ed2db7610e306f07dba8525ba9f9

    SHA1

    9faf3d965ef41ed13be4a05845ea851c37a1bc1c

    SHA256

    a9360ac012f669998f87ded23a1a4865ee7de7138b2e87093ec1d4411de51f3c

    SHA512

    700a190957a5f1d9ed19bff43a869898968f86fbba636b8d33133a3de5210fc84e8c3c511c110494ad8fa4fba964adacd0967fa509fce1f752990300b95eb72f

  • memory/324-78-0x0000000000400000-0x0000000000426000-memory.dmp

    Filesize

    152KB

  • memory/324-80-0x0000000000400000-0x0000000000426000-memory.dmp

    Filesize

    152KB

  • memory/324-82-0x0000000000400000-0x0000000000426000-memory.dmp

    Filesize

    152KB

  • memory/324-77-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/324-76-0x0000000000400000-0x0000000000426000-memory.dmp

    Filesize

    152KB

  • memory/324-75-0x0000000000400000-0x0000000000426000-memory.dmp

    Filesize

    152KB

  • memory/324-74-0x0000000000400000-0x0000000000426000-memory.dmp

    Filesize

    152KB

  • memory/324-73-0x0000000000400000-0x0000000000426000-memory.dmp

    Filesize

    152KB

  • memory/556-83-0x0000000002560000-0x00000000025A0000-memory.dmp

    Filesize

    256KB

  • memory/556-84-0x0000000002560000-0x00000000025A0000-memory.dmp

    Filesize

    256KB

  • memory/1300-72-0x0000000000F40000-0x0000000000F68000-memory.dmp

    Filesize

    160KB

  • memory/1300-55-0x00000000002E0000-0x00000000002EE000-memory.dmp

    Filesize

    56KB

  • memory/1300-56-0x0000000000F70000-0x0000000000FB0000-memory.dmp

    Filesize

    256KB

  • memory/1300-57-0x0000000000F70000-0x0000000000FB0000-memory.dmp

    Filesize

    256KB

  • memory/1300-54-0x00000000010C0000-0x000000000117E000-memory.dmp

    Filesize

    760KB

  • memory/1300-58-0x00000000002F0000-0x00000000002FA000-memory.dmp

    Filesize

    40KB

  • memory/1300-59-0x0000000001030000-0x0000000001092000-memory.dmp

    Filesize

    392KB

  • memory/1492-85-0x0000000002700000-0x0000000002740000-memory.dmp

    Filesize

    256KB