Analysis

  • max time kernel
    125s
  • max time network
    19s
  • platform
    windows7_x64
  • resource
    win7-20241010-en
  • resource tags

    arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
  • submitted
    30-12-2024 17:18

General

  • Target

    71037728ddcea1b094b4bc48fa92b2a0895f009f17e0e9354a3dc5fb0077e8bc.exe

  • Size

    888KB

  • MD5

    b420cd9c5eefe5c4b1a80958476ceef2

  • SHA1

    ec9bad3fe35f25be002005011bbec029af4db4dd

  • SHA256

    71037728ddcea1b094b4bc48fa92b2a0895f009f17e0e9354a3dc5fb0077e8bc

  • SHA512

    13b43f836e34385003aef7074f355100481ddf46ab556f4094ee0cef0b8ef4233d90e83579b8ef15d63e91648d9e62271f91fafe40e9e69e1885430bb9aadb2a

  • SSDEEP

    12288:1x57XCkfrx+nYdx6BsfSzOIHPOG9+G1cPAoThlfRIbGtYJD1vLz/7CWV0PATpS9b:tX+Ydx61/P19+LhlfRyXjf4uNcb

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    ftp
  • Host:
    ftp://nanyainc.cf/
  • Port:
    21
  • Username:
    [email protected]
  • Password:
    7qB+iH=KrUUT

Signatures

  • AgentTesla

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

  • Agenttesla family
  • Detect Neshta payload 5 IoCs
  • Neshta

    Malware from the neshta family is designed to infect itself into other files to spread itself and cause damage.

  • Neshta family
  • AgentTesla payload 5 IoCs
  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 4 IoCs
  • Modifies system executable filetype association 2 TTPs 1 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 3 TTPs

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

  • Unsecured Credentials: Credentials In Files 1 TTPs

    Steal credentials from unsecured files.

  • Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Drops file in Program Files directory 64 IoCs
  • Drops file in Windows directory 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 3 IoCs

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

  • Modifies registry class 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\71037728ddcea1b094b4bc48fa92b2a0895f009f17e0e9354a3dc5fb0077e8bc.exe
    "C:\Users\Admin\AppData\Local\Temp\71037728ddcea1b094b4bc48fa92b2a0895f009f17e0e9354a3dc5fb0077e8bc.exe"
    1⤵
    • Loads dropped DLL
    • Modifies system executable filetype association
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • System Location Discovery: System Language Discovery
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:2248
    • C:\Users\Admin\AppData\Local\Temp\3582-490\71037728ddcea1b094b4bc48fa92b2a0895f009f17e0e9354a3dc5fb0077e8bc.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\71037728ddcea1b094b4bc48fa92b2a0895f009f17e0e9354a3dc5fb0077e8bc.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of SetThreadContext
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2584
      • C:\Users\Admin\AppData\Local\Temp\3582-490\71037728ddcea1b094b4bc48fa92b2a0895f009f17e0e9354a3dc5fb0077e8bc.exe
        "C:\Users\Admin\AppData\Local\Temp\3582-490\71037728ddcea1b094b4bc48fa92b2a0895f009f17e0e9354a3dc5fb0077e8bc.exe"
        3⤵
        • Executes dropped EXE
        PID:2788
      • C:\Users\Admin\AppData\Local\Temp\3582-490\71037728ddcea1b094b4bc48fa92b2a0895f009f17e0e9354a3dc5fb0077e8bc.exe
        "C:\Users\Admin\AppData\Local\Temp\3582-490\71037728ddcea1b094b4bc48fa92b2a0895f009f17e0e9354a3dc5fb0077e8bc.exe"
        3⤵
        • Executes dropped EXE
        • Accesses Microsoft Outlook profiles
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • outlook_office_path
        • outlook_win_path
        PID:2508

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\MSOCache\ALLUSE~1\{90140~1\dwtrig20.exe

    Filesize

    547KB

    MD5

    cf6c595d3e5e9667667af096762fd9c4

    SHA1

    9bb44da8d7f6457099cb56e4f7d1026963dce7ce

    SHA256

    593e60cc30ae0789448547195af77f550387f6648d45847ea244dd0dd7abf03d

    SHA512

    ff4f789df9e6a6d0fbe12b3250f951fcf11e857906c65e96a30bb46266e7e1180d6103a03db2f3764e0d1346b2de7afba8259ba080057e4a268e45e8654dfa80

  • \PROGRA~2\Adobe\READER~1.0\Reader\LOGTRA~1.EXE

    Filesize

    252KB

    MD5

    9e2b9928c89a9d0da1d3e8f4bd96afa7

    SHA1

    ec66cda99f44b62470c6930e5afda061579cde35

    SHA256

    8899b4ed3446b7d55b54defbc1acb7c5392a4b3bc8ec2cdc7c31171708965043

    SHA512

    2ca5ad1d0e12a8049de885b90b7f56fe77c868e0d6dae4ec4b6f3bc0bf7b2e73295cc9b1328c2b45357ffb0d7804622ab3f91a56140b098e93b691032d508156

  • \Users\Admin\AppData\Local\Temp\3582-490\71037728ddcea1b094b4bc48fa92b2a0895f009f17e0e9354a3dc5fb0077e8bc.exe

    Filesize

    848KB

    MD5

    933f2b5b95fbf6ebd96edf95112018ad

    SHA1

    e63bfa99a18f1e370727a005b092aafac7b2a398

    SHA256

    6d816af5a10da2892d27023b1ef0d9b47da019e102e56ab8e6943421279f41e9

    SHA512

    fbbcb9a3801b39e0647e5f30d33321f94d83b5ec4047089a2b93b93cb6ac4a116a77f62f38a86820c93427d0e4181d33ccc4b003c15bcac1a0f9d7e62b89999e

  • memory/2248-91-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/2248-112-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/2248-88-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/2248-92-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/2508-105-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2508-110-0x0000000000400000-0x000000000043C000-memory.dmp

    Filesize

    240KB

  • memory/2508-108-0x0000000000400000-0x000000000043C000-memory.dmp

    Filesize

    240KB

  • memory/2508-97-0x0000000000400000-0x000000000043C000-memory.dmp

    Filesize

    240KB

  • memory/2508-101-0x0000000000400000-0x000000000043C000-memory.dmp

    Filesize

    240KB

  • memory/2508-103-0x0000000000400000-0x000000000043C000-memory.dmp

    Filesize

    240KB

  • memory/2508-99-0x0000000000400000-0x000000000043C000-memory.dmp

    Filesize

    240KB

  • memory/2508-106-0x0000000000400000-0x000000000043C000-memory.dmp

    Filesize

    240KB

  • memory/2584-89-0x000000007416E000-0x000000007416F000-memory.dmp

    Filesize

    4KB

  • memory/2584-93-0x00000000058E0000-0x0000000005990000-memory.dmp

    Filesize

    704KB

  • memory/2584-12-0x000000007416E000-0x000000007416F000-memory.dmp

    Filesize

    4KB

  • memory/2584-90-0x0000000074160000-0x000000007484E000-memory.dmp

    Filesize

    6.9MB

  • memory/2584-14-0x0000000074160000-0x000000007484E000-memory.dmp

    Filesize

    6.9MB

  • memory/2584-37-0x00000000003A0000-0x00000000003AC000-memory.dmp

    Filesize

    48KB

  • memory/2584-111-0x0000000074160000-0x000000007484E000-memory.dmp

    Filesize

    6.9MB

  • memory/2584-13-0x0000000000CC0000-0x0000000000D9A000-memory.dmp

    Filesize

    872KB