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Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    04/09/2024, 12:45

General

  • Target

    3b5e5fb317040ff6197982f73c65426ea39e48f0108a4349acfc27468cef1e86.exe

  • Size

    973KB

  • MD5

    5c476a26f9288899b8c5df769549dc3b

  • SHA1

    cb7794062569e0ca10e1588fbc454b6ba0f59f37

  • SHA256

    3b5e5fb317040ff6197982f73c65426ea39e48f0108a4349acfc27468cef1e86

  • SHA512

    56e415db49c949d1853e92f0626e95413d194e38c21fc8bc59809f76c73ef3d634ac9bde868a8328971706797a103e2955102e00945d736451e1fd6af657536c

  • SSDEEP

    24576:YCXTaMLTuPwXGHCiNN41J9hAd+nl7InbXwjrET3Xyy/vh0:YCjo+91dAd+l/jfuh0

Malware Config

Extracted

Family

redline

Botnet

bigpay

C2

204.10.160.140:7001

Extracted

Family

agenttesla

Credentials

Signatures

  • AgentTesla

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

  • RedLine

    RedLine Stealer is a malware family written in C#, first appearing in early 2020.

  • RedLine payload 2 IoCs
  • Credentials from Password Stores: Credentials from Web Browsers 1 TTPs

    Malicious Access or copy of Web Browser Credential store.

  • Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

    Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 2 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.

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

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

  • System Location Discovery: System Language Discovery 1 TTPs 7 IoCs

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

  • Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 23 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\3b5e5fb317040ff6197982f73c65426ea39e48f0108a4349acfc27468cef1e86.exe
    "C:\Users\Admin\AppData\Local\Temp\3b5e5fb317040ff6197982f73c65426ea39e48f0108a4349acfc27468cef1e86.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1960
    • 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\3b5e5fb317040ff6197982f73c65426ea39e48f0108a4349acfc27468cef1e86.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2840
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\tSYPqhw.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4756
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\tSYPqhw" /XML "C:\Users\Admin\AppData\Local\Temp\tmpE61A.tmp"
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:2740
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:4384
      • C:\Users\Admin\AppData\Local\Temp\newfile.exe
        "C:\Users\Admin\AppData\Local\Temp\newfile.exe"
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:2848
      • C:\Users\Admin\AppData\Local\Temp\build.exe
        "C:\Users\Admin\AppData\Local\Temp\build.exe"
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        PID:1772

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log

    Filesize

    2KB

    MD5

    3d086a433708053f9bf9523e1d87a4e8

    SHA1

    b3ab5d4f282a4c8fe8c3005b8a557ed5a0e37f28

    SHA256

    6f8fd1b8d9788ad54eaeee329232187e24b7b43393a01aeba2d6e9675231fb69

    SHA512

    931ae42b4c68a4507ff2342332b08eb407050d47cf4176137ea022d0f6e513c689e998445a04c6d18d4877391705c586bfce0234632b898d41aaed0957996dfd

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

    Filesize

    18KB

    MD5

    642b6cd3ace4d5959a6d6bd1c1517c2e

    SHA1

    829b8072af1040d6d9dcfac4beda74ffcb5164d1

    SHA256

    7e8a5afd4d7b30cc977e93829a2ac9cb0a982f1855fe4e8c35f25058480663fd

    SHA512

    8f161bec92e8aa36dbe72692dbfa079fb8a57ef00dfcf0228ed9067fa637bec7d33b5b6a0857b60e2c6f716f569e64b660284b8edbc898b45269286627e0797b

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_g1xx0prr.12b.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

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

    Filesize

    300KB

    MD5

    f438d85cb04ea1b9fa4e32cfd4b28d0f

    SHA1

    3a0dd7cd2036b41fb5982e98c798802f8af619ac

    SHA256

    fada9b55d3b3995f6bddb357370843fced984832063945eac08b6eb182fced52

    SHA512

    e21c8b975c3a5de7500ffd4dc97e8a3062ce4314bf749df5ab3c9f09bbc9f94324afca9149ee11769efd5e76971b0e67baf39c3961f3a1dfec8596c20fa7069b

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

    Filesize

    234KB

    MD5

    8234c3ec3aba620ca36e9d5629e3db74

    SHA1

    09d5b639a270fb4cbf45b2b454db96cc1035a768

    SHA256

    acff54dc41a4f979a5054bc43649e097472904293fa9c4d23048b30a57bc3149

    SHA512

    651c26e080b704189266ecb1daca88d1a3f4e67075f362055bd57b1bea52dbb181c299129b503b8674e9c89af5c1455a03abcf7ad417ed8cbbc7c0f7311f6c16

  • C:\Users\Admin\AppData\Local\Temp\tmpE61A.tmp

    Filesize

    1KB

    MD5

    d70c7befefaa6d36a4e66ae6494132b6

    SHA1

    5d67eec95b5f0c4e8bd897f8a1cfc910331d3e5f

    SHA256

    a218cb53ff5269040c949414a014a959fc3e3f058a81bf93da0d1e3a160201af

    SHA512

    6ff074d09d8f3911a61eee3502fc14b14dc94293d5ee5aba5f9ed142783ff6c58d50a09b992e4e185a20e78453c9b9082c7aa64fdc40a4cd1b366419c51cfc6d

  • memory/1772-76-0x0000000000C50000-0x0000000000CA2000-memory.dmp

    Filesize

    328KB

  • memory/1772-80-0x0000000005840000-0x000000000587C000-memory.dmp

    Filesize

    240KB

  • memory/1772-77-0x00000000066C0000-0x0000000006CD8000-memory.dmp

    Filesize

    6.1MB

  • memory/1772-78-0x00000000060A0000-0x00000000061AA000-memory.dmp

    Filesize

    1.0MB

  • memory/1772-79-0x00000000056E0000-0x00000000056F2000-memory.dmp

    Filesize

    72KB

  • memory/1960-11-0x0000000006E70000-0x0000000006F40000-memory.dmp

    Filesize

    832KB

  • memory/1960-6-0x0000000005CC0000-0x0000000005D5C000-memory.dmp

    Filesize

    624KB

  • memory/1960-4-0x0000000074700000-0x0000000074EB0000-memory.dmp

    Filesize

    7.7MB

  • memory/1960-7-0x0000000005FF0000-0x0000000006000000-memory.dmp

    Filesize

    64KB

  • memory/1960-10-0x0000000006E60000-0x0000000006E6E000-memory.dmp

    Filesize

    56KB

  • memory/1960-9-0x0000000074700000-0x0000000074EB0000-memory.dmp

    Filesize

    7.7MB

  • memory/1960-8-0x000000007470E000-0x000000007470F000-memory.dmp

    Filesize

    4KB

  • memory/1960-49-0x0000000074700000-0x0000000074EB0000-memory.dmp

    Filesize

    7.7MB

  • memory/1960-5-0x0000000005A50000-0x0000000005A5A000-memory.dmp

    Filesize

    40KB

  • memory/1960-3-0x0000000005A90000-0x0000000005B22000-memory.dmp

    Filesize

    584KB

  • memory/1960-0-0x000000007470E000-0x000000007470F000-memory.dmp

    Filesize

    4KB

  • memory/1960-2-0x0000000006040000-0x00000000065E4000-memory.dmp

    Filesize

    5.6MB

  • memory/1960-1-0x0000000000F60000-0x0000000001054000-memory.dmp

    Filesize

    976KB

  • memory/2840-52-0x0000000006330000-0x000000000637C000-memory.dmp

    Filesize

    304KB

  • memory/2840-115-0x0000000074700000-0x0000000074EB0000-memory.dmp

    Filesize

    7.7MB

  • memory/2840-108-0x00000000073C0000-0x00000000073D1000-memory.dmp

    Filesize

    68KB

  • memory/2840-44-0x0000000074700000-0x0000000074EB0000-memory.dmp

    Filesize

    7.7MB

  • memory/2840-107-0x0000000007440000-0x00000000074D6000-memory.dmp

    Filesize

    600KB

  • memory/2840-51-0x0000000005E80000-0x0000000005E9E000-memory.dmp

    Filesize

    120KB

  • memory/2840-45-0x0000000005AE0000-0x0000000005E34000-memory.dmp

    Filesize

    3.3MB

  • memory/2840-16-0x0000000002570000-0x00000000025A6000-memory.dmp

    Filesize

    216KB

  • memory/2840-34-0x0000000005990000-0x00000000059F6000-memory.dmp

    Filesize

    408KB

  • memory/2840-106-0x0000000007230000-0x000000000723A000-memory.dmp

    Filesize

    40KB

  • memory/2840-18-0x0000000074700000-0x0000000074EB0000-memory.dmp

    Filesize

    7.7MB

  • memory/2840-109-0x00000000073F0000-0x00000000073FE000-memory.dmp

    Filesize

    56KB

  • memory/2840-19-0x0000000074700000-0x0000000074EB0000-memory.dmp

    Filesize

    7.7MB

  • memory/2840-17-0x0000000005010000-0x0000000005638000-memory.dmp

    Filesize

    6.2MB

  • memory/2840-82-0x00000000731B0000-0x00000000731FC000-memory.dmp

    Filesize

    304KB

  • memory/2840-93-0x0000000006E80000-0x0000000006F23000-memory.dmp

    Filesize

    652KB

  • memory/2840-92-0x00000000064A0000-0x00000000064BE000-memory.dmp

    Filesize

    120KB

  • memory/2840-32-0x00000000058B0000-0x0000000005916000-memory.dmp

    Filesize

    408KB

  • memory/2840-81-0x0000000006460000-0x0000000006492000-memory.dmp

    Filesize

    200KB

  • memory/2840-111-0x0000000007500000-0x000000000751A000-memory.dmp

    Filesize

    104KB

  • memory/2840-105-0x00000000071C0000-0x00000000071DA000-memory.dmp

    Filesize

    104KB

  • memory/2848-72-0x0000000000BE0000-0x0000000000C20000-memory.dmp

    Filesize

    256KB

  • memory/2848-120-0x00000000063F0000-0x0000000006440000-memory.dmp

    Filesize

    320KB

  • memory/4384-47-0x0000000000400000-0x000000000048E000-memory.dmp

    Filesize

    568KB

  • memory/4756-94-0x00000000731B0000-0x00000000731FC000-memory.dmp

    Filesize

    304KB

  • memory/4756-110-0x0000000007370000-0x0000000007384000-memory.dmp

    Filesize

    80KB

  • memory/4756-104-0x0000000007770000-0x0000000007DEA000-memory.dmp

    Filesize

    6.5MB

  • memory/4756-112-0x0000000007450000-0x0000000007458000-memory.dmp

    Filesize

    32KB

  • memory/4756-20-0x0000000074700000-0x0000000074EB0000-memory.dmp

    Filesize

    7.7MB

  • memory/4756-22-0x0000000004E40000-0x0000000004E62000-memory.dmp

    Filesize

    136KB

  • memory/4756-33-0x0000000074700000-0x0000000074EB0000-memory.dmp

    Filesize

    7.7MB

  • memory/4756-119-0x0000000074700000-0x0000000074EB0000-memory.dmp

    Filesize

    7.7MB

  • memory/4756-46-0x0000000074700000-0x0000000074EB0000-memory.dmp

    Filesize

    7.7MB