Analysis

  • max time kernel
    118s
  • max time network
    136s
  • platform
    windows7_x64
  • resource
    win7-20231129-en
  • resource tags

    arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
  • submitted
    29-03-2024 01:41

General

  • Target

    NOTIFICATION_TELEX_RELEASE_IMG.scr

  • Size

    752KB

  • MD5

    82dff7121aca0c1db850c00e2ed7b6e5

  • SHA1

    71c1ad2df3a63a9ce673a3fc573bd55fa487cc2a

  • SHA256

    6acee834fa468dc330f6f1d1029b7d99091225bded25097c887afd61f306d87d

  • SHA512

    49408f8926f902ffe2bf1c33a3caa4023ec94849b52b2a48e1b48b0b7e48ecd2ab30349bb344da431e1bdfdfead98b7631827a5af6914620035b78711660426d

  • SSDEEP

    12288:uJ0YOwqHFfm9iZZTZrl6sAKehTBpIRVdjJcko/WHOhSkfKw:uvO77isALIHds

Malware Config

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    mail.ssipae.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    Kamikase333

Extracted

Family

agenttesla

Credentials

Signatures

  • AgentTesla

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

  • 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
  • Modifies system certificate store 2 TTPs 7 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\NOTIFICATION_TELEX_RELEASE_IMG.scr
    "C:\Users\Admin\AppData\Local\Temp\NOTIFICATION_TELEX_RELEASE_IMG.scr" /S
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2328
    • C:\Users\Admin\AppData\Local\Temp\NOTIFICATION_TELEX_RELEASE_IMG.scr
      "C:\Users\Admin\AppData\Local\Temp\NOTIFICATION_TELEX_RELEASE_IMG.scr"
      2⤵
      • Modifies system certificate store
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2852

Network

MITRE ATT&CK Matrix ATT&CK v13

Defense Evasion

Subvert Trust Controls

1
T1553

Install Root Certificate

1
T1553.004

Modify Registry

1
T1112

Credential Access

Unsecured Credentials

4
T1552

Credentials In Files

3
T1552.001

Credentials in Registry

1
T1552.002

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\LocalLow\Microsoft\CryptnetUrlCache\Content\F0ACCF77CDCBFF39F6191887F6D2D357
    Filesize

    1KB

    MD5

    a266bb7dcc38a562631361bbf61dd11b

    SHA1

    3b1efd3a66ea28b16697394703a72ca340a05bd5

    SHA256

    df545bf919a2439c36983b54cdfc903dfa4f37d3996d8d84b4c31eec6f3c163e

    SHA512

    0da8ef4f8f6ed3d16d2bc8eb816b9e6e1345dfe2d91160196c47e6149a1d6aedaafadcefd66acdea7f72dcf0832770192ceac15b0c559c4ccc2c0e5581d5aefc

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\F0ACCF77CDCBFF39F6191887F6D2D357
    Filesize

    242B

    MD5

    2c556cae29a10cdbad1022625d0b7118

    SHA1

    848ed77d8cbce32f62157a0ab4ececa0939e5f15

    SHA256

    cb04fc8337bc9ba4429c548c719d0330f231676bc2eec6ac913aa91f0a2ef815

    SHA512

    64b842b19637feb2c173e281f55004dd71db89df5020e0d9370be262869f0143abe45a1577d7e305035195c6910bd097035493034762e817afd2cac9d92db2a4

  • C:\Users\Admin\AppData\Local\Temp\Tar4D4B.tmp
    Filesize

    177KB

    MD5

    435a9ac180383f9fa094131b173a2f7b

    SHA1

    76944ea657a9db94f9a4bef38f88c46ed4166983

    SHA256

    67dc37ed50b8e63272b49a254a6039ee225974f1d767bb83eb1fd80e759a7c34

    SHA512

    1a6b277611959720a9c71114957620517ad94541302f164eb872bd322292a952409bafb8bc2ac793b16ad5f25d83f8594ccff2b7834e3c2b2b941e6fc84c009a

  • memory/2328-20-0x0000000074740000-0x0000000074E2E000-memory.dmp
    Filesize

    6.9MB

  • memory/2328-1-0x0000000074740000-0x0000000074E2E000-memory.dmp
    Filesize

    6.9MB

  • memory/2328-2-0x0000000004C90000-0x0000000004CD0000-memory.dmp
    Filesize

    256KB

  • memory/2328-3-0x0000000000A40000-0x0000000000A5A000-memory.dmp
    Filesize

    104KB

  • memory/2328-4-0x0000000000970000-0x000000000097C000-memory.dmp
    Filesize

    48KB

  • memory/2328-5-0x00000000052C0000-0x0000000005346000-memory.dmp
    Filesize

    536KB

  • memory/2328-0-0x0000000000F60000-0x000000000101C000-memory.dmp
    Filesize

    752KB

  • memory/2852-14-0x000000007EFDE000-0x000000007EFDF000-memory.dmp
    Filesize

    4KB

  • memory/2852-21-0x0000000000400000-0x0000000000444000-memory.dmp
    Filesize

    272KB

  • memory/2852-18-0x0000000000400000-0x0000000000444000-memory.dmp
    Filesize

    272KB

  • memory/2852-16-0x0000000000400000-0x0000000000444000-memory.dmp
    Filesize

    272KB

  • memory/2852-22-0x0000000074740000-0x0000000074E2E000-memory.dmp
    Filesize

    6.9MB

  • memory/2852-23-0x0000000004760000-0x00000000047A0000-memory.dmp
    Filesize

    256KB

  • memory/2852-12-0x0000000000400000-0x0000000000444000-memory.dmp
    Filesize

    272KB

  • memory/2852-10-0x0000000000400000-0x0000000000444000-memory.dmp
    Filesize

    272KB

  • memory/2852-8-0x0000000000400000-0x0000000000444000-memory.dmp
    Filesize

    272KB

  • memory/2852-6-0x0000000000400000-0x0000000000444000-memory.dmp
    Filesize

    272KB

  • memory/2852-97-0x0000000074740000-0x0000000074E2E000-memory.dmp
    Filesize

    6.9MB

  • memory/2852-98-0x0000000004760000-0x00000000047A0000-memory.dmp
    Filesize

    256KB