Analysis

  • max time kernel
    119s
  • max time network
    134s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    27-03-2024 02:41

General

  • Target

    d3fe532dd98ebd8732a11a78ae670a6ebfba1702c1a36c26aa9aa22a799d8f02.exe

  • Size

    611KB

  • MD5

    01b64d37e2fe6e0748e9ec1f1ffd12f4

  • SHA1

    c0374e1ea19ef7366054a5eded3eb0177fb800a1

  • SHA256

    d3fe532dd98ebd8732a11a78ae670a6ebfba1702c1a36c26aa9aa22a799d8f02

  • SHA512

    0391c85c38c23665d3676535c2c84d7f116d3b7ebe9240bd53356aea056e0bda9dd0d29700ffbe031c18ba79952a2142a3f578407c1a5f90b4cee7439cb3fd21

  • SSDEEP

    12288:yof4wQnQeLKKH+O0ptkYPFwZgafoNIMRt1Qe1WWFfa5W:wwQn7OKHL0Xk4wUN1R7QZmF

Malware Config

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    mail.wecaresvc.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    s2a8l4e9skao

Extracted

Family

agenttesla

Credentials

Signatures

  • AgentTesla

    Agent Tesla is a remote access tool (RAT) written in visual basic.

  • Detect packed .NET executables. Mostly AgentTeslaV4. 5 IoCs
  • Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers. 5 IoCs
  • Detects binaries and memory artifacts referencing sandbox DLLs typically observed in sandbox evasion 5 IoCs
  • Detects executables packed with SmartAssembly 1 IoCs
  • Detects executables referencing Windows vault credential objects. Observed in infostealers 5 IoCs
  • Detects executables referencing many confidential data stores found in browsers, mail clients, cryptocurreny wallets, etc. Observed in information stealers 5 IoCs
  • Detects executables referencing many email and collaboration clients. Observed in information stealers 5 IoCs
  • Detects executables referencing many file transfer clients. Observed in information stealers 5 IoCs
  • Reads WinSCP keys stored on the system 2 TTPs

    Tries to access WinSCP stored sessions.

  • 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.

  • Looks up external IP address via web service 3 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

Processes

  • C:\Users\Admin\AppData\Local\Temp\d3fe532dd98ebd8732a11a78ae670a6ebfba1702c1a36c26aa9aa22a799d8f02.exe
    "C:\Users\Admin\AppData\Local\Temp\d3fe532dd98ebd8732a11a78ae670a6ebfba1702c1a36c26aa9aa22a799d8f02.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2756
    • 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\d3fe532dd98ebd8732a11a78ae670a6ebfba1702c1a36c26aa9aa22a799d8f02.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2148
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\rfLSqbiP.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2840
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\rfLSqbiP" /XML "C:\Users\Admin\AppData\Local\Temp\tmpA94A.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:2472
    • C:\Users\Admin\AppData\Local\Temp\d3fe532dd98ebd8732a11a78ae670a6ebfba1702c1a36c26aa9aa22a799d8f02.exe
      "C:\Users\Admin\AppData\Local\Temp\d3fe532dd98ebd8732a11a78ae670a6ebfba1702c1a36c26aa9aa22a799d8f02.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2448

Network

MITRE ATT&CK Matrix ATT&CK v13

Execution

Scheduled Task/Job

1
T1053

Persistence

Scheduled Task/Job

1
T1053

Privilege Escalation

Scheduled Task/Job

1
T1053

Credential Access

Unsecured Credentials

4
T1552

Credentials In Files

3
T1552.001

Credentials in Registry

1
T1552.002

Discovery

System Information Discovery

1
T1082

Collection

Data from Local System

4
T1005

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\94308059B57B3142E455B38A6EB92015
    Filesize

    68KB

    MD5

    29f65ba8e88c063813cc50a4ea544e93

    SHA1

    05a7040d5c127e68c25d81cc51271ffb8bef3568

    SHA256

    1ed81fa8dfb6999a9fedc6e779138ffd99568992e22d300acd181a6d2c8de184

    SHA512

    e29b2e92c496245bed3372578074407e8ef8882906ce10c35b3c8deebfefe01b5fd7f3030acaa693e175f4b7aca6cd7d8d10ae1c731b09c5fa19035e005de3aa

  • C:\Users\Admin\AppData\Local\Temp\Tar803.tmp
    Filesize

    177KB

    MD5

    435a9ac180383f9fa094131b173a2f7b

    SHA1

    76944ea657a9db94f9a4bef38f88c46ed4166983

    SHA256

    67dc37ed50b8e63272b49a254a6039ee225974f1d767bb83eb1fd80e759a7c34

    SHA512

    1a6b277611959720a9c71114957620517ad94541302f164eb872bd322292a952409bafb8bc2ac793b16ad5f25d83f8594ccff2b7834e3c2b2b941e6fc84c009a

  • C:\Users\Admin\AppData\Local\Temp\tmpA94A.tmp
    Filesize

    1KB

    MD5

    1311ed482b4bd5e15e3fe4eb86b3b041

    SHA1

    ef371d3fedabca3749a874ee1e7fde2871977104

    SHA256

    e7c4ef062f55887958836eb10c8fd741505103cbbcc5998c3d2abd4591d66a71

    SHA512

    87c1ab65484ca55c522497123a3f4a0ab7ec7432211b7f8ebbac10fed49e449a1d9a94eefc271e807dbab9a2ea4dc80d860848c216783a08dccc959762c9a9f0

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

    7KB

    MD5

    db8a32af7e00fe45b584ad82556dee68

    SHA1

    2da2d997b0b32f24576d7d95f47893273d70d1a5

    SHA256

    8b9bc965ec6060ca4e5ab7666b7c0d2a02210f0ed343a2ecfdc2fecdf3ac9b38

    SHA512

    f8b7b6cb1eee61503175e20e6b7dbf2ee604ef250ef57ea1eb9e0f6e7afada97ddaf68acd4ee7da375914822bedc690218753f771f7abb592a9ffc13a60222a5

  • memory/2148-32-0x000000006F0B0000-0x000000006F65B000-memory.dmp
    Filesize

    5.7MB

  • memory/2148-44-0x000000006F0B0000-0x000000006F65B000-memory.dmp
    Filesize

    5.7MB

  • memory/2148-41-0x0000000001D10000-0x0000000001D50000-memory.dmp
    Filesize

    256KB

  • memory/2148-39-0x0000000001D10000-0x0000000001D50000-memory.dmp
    Filesize

    256KB

  • memory/2148-35-0x000000006F0B0000-0x000000006F65B000-memory.dmp
    Filesize

    5.7MB

  • memory/2448-18-0x0000000000400000-0x0000000000442000-memory.dmp
    Filesize

    264KB

  • memory/2448-38-0x0000000004A70000-0x0000000004AB0000-memory.dmp
    Filesize

    256KB

  • memory/2448-22-0x0000000000400000-0x0000000000442000-memory.dmp
    Filesize

    264KB

  • memory/2448-24-0x000000007EFDE000-0x000000007EFDF000-memory.dmp
    Filesize

    4KB

  • memory/2448-26-0x0000000000400000-0x0000000000442000-memory.dmp
    Filesize

    264KB

  • memory/2448-28-0x0000000000400000-0x0000000000442000-memory.dmp
    Filesize

    264KB

  • memory/2448-30-0x0000000000400000-0x0000000000442000-memory.dmp
    Filesize

    264KB

  • memory/2448-83-0x0000000072F80000-0x000000007366E000-memory.dmp
    Filesize

    6.9MB

  • memory/2448-20-0x0000000000400000-0x0000000000442000-memory.dmp
    Filesize

    264KB

  • memory/2448-45-0x0000000004A70000-0x0000000004AB0000-memory.dmp
    Filesize

    256KB

  • memory/2448-21-0x0000000000400000-0x0000000000442000-memory.dmp
    Filesize

    264KB

  • memory/2448-40-0x0000000072F80000-0x000000007366E000-memory.dmp
    Filesize

    6.9MB

  • memory/2756-3-0x00000000008C0000-0x00000000008D2000-memory.dmp
    Filesize

    72KB

  • memory/2756-5-0x00000000053A0000-0x0000000005424000-memory.dmp
    Filesize

    528KB

  • memory/2756-0-0x0000000000BF0000-0x0000000000C90000-memory.dmp
    Filesize

    640KB

  • memory/2756-4-0x0000000000920000-0x000000000092C000-memory.dmp
    Filesize

    48KB

  • memory/2756-2-0x0000000004E10000-0x0000000004E50000-memory.dmp
    Filesize

    256KB

  • memory/2756-1-0x0000000074280000-0x000000007496E000-memory.dmp
    Filesize

    6.9MB

  • memory/2756-31-0x0000000074280000-0x000000007496E000-memory.dmp
    Filesize

    6.9MB

  • memory/2840-37-0x00000000024E0000-0x0000000002520000-memory.dmp
    Filesize

    256KB

  • memory/2840-36-0x000000006F0B0000-0x000000006F65B000-memory.dmp
    Filesize

    5.7MB

  • memory/2840-42-0x00000000024E0000-0x0000000002520000-memory.dmp
    Filesize

    256KB

  • memory/2840-34-0x00000000024E0000-0x0000000002520000-memory.dmp
    Filesize

    256KB

  • memory/2840-43-0x000000006F0B0000-0x000000006F65B000-memory.dmp
    Filesize

    5.7MB

  • memory/2840-33-0x000000006F0B0000-0x000000006F65B000-memory.dmp
    Filesize

    5.7MB