Analysis

  • max time kernel
    142s
  • max time network
    124s
  • platform
    windows7_x64
  • resource
    win7-en-20211208
  • submitted
    08-02-2022 11:33

General

  • Target

    71037728ddcea1b094b4bc48fa92b2a0895f009f17e0e9354a3dc5fb0077e8bc.exe

  • Size

    888KB

  • MD5

    b420cd9c5eefe5c4b1a80958476ceef2

  • SHA1

    ec9bad3fe35f25be002005011bbec029af4db4dd

  • SHA256

    71037728ddcea1b094b4bc48fa92b2a0895f009f17e0e9354a3dc5fb0077e8bc

  • SHA512

    13b43f836e34385003aef7074f355100481ddf46ab556f4094ee0cef0b8ef4233d90e83579b8ef15d63e91648d9e62271f91fafe40e9e69e1885430bb9aadb2a

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.

  • Modifies system executable filetype association 2 TTPs 1 IoCs
  • Neshta

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

  • AgentTesla Payload 4 IoCs
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 3 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
  • 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). Likely ransomware behaviour.

  • Modifies registry class 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 13 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⤵
    • Modifies system executable filetype association
    • Loads dropped DLL
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:1560
    • 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
      • Suspicious use of WriteProcessMemory
      PID:1212
      • 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
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • outlook_office_path
        • outlook_win_path
        PID:684

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\3582-490\71037728ddcea1b094b4bc48fa92b2a0895f009f17e0e9354a3dc5fb0077e8bc.exe
    MD5

    933f2b5b95fbf6ebd96edf95112018ad

    SHA1

    e63bfa99a18f1e370727a005b092aafac7b2a398

    SHA256

    6d816af5a10da2892d27023b1ef0d9b47da019e102e56ab8e6943421279f41e9

    SHA512

    fbbcb9a3801b39e0647e5f30d33321f94d83b5ec4047089a2b93b93cb6ac4a116a77f62f38a86820c93427d0e4181d33ccc4b003c15bcac1a0f9d7e62b89999e

  • C:\Users\Admin\AppData\Local\Temp\3582-490\71037728ddcea1b094b4bc48fa92b2a0895f009f17e0e9354a3dc5fb0077e8bc.exe
    MD5

    933f2b5b95fbf6ebd96edf95112018ad

    SHA1

    e63bfa99a18f1e370727a005b092aafac7b2a398

    SHA256

    6d816af5a10da2892d27023b1ef0d9b47da019e102e56ab8e6943421279f41e9

    SHA512

    fbbcb9a3801b39e0647e5f30d33321f94d83b5ec4047089a2b93b93cb6ac4a116a77f62f38a86820c93427d0e4181d33ccc4b003c15bcac1a0f9d7e62b89999e

  • C:\Users\Admin\AppData\Local\Temp\3582-490\71037728ddcea1b094b4bc48fa92b2a0895f009f17e0e9354a3dc5fb0077e8bc.exe
    MD5

    933f2b5b95fbf6ebd96edf95112018ad

    SHA1

    e63bfa99a18f1e370727a005b092aafac7b2a398

    SHA256

    6d816af5a10da2892d27023b1ef0d9b47da019e102e56ab8e6943421279f41e9

    SHA512

    fbbcb9a3801b39e0647e5f30d33321f94d83b5ec4047089a2b93b93cb6ac4a116a77f62f38a86820c93427d0e4181d33ccc4b003c15bcac1a0f9d7e62b89999e

  • \PROGRA~2\Adobe\READER~1.0\Reader\LOGTRA~1.EXE
    MD5

    9e2b9928c89a9d0da1d3e8f4bd96afa7

    SHA1

    ec66cda99f44b62470c6930e5afda061579cde35

    SHA256

    8899b4ed3446b7d55b54defbc1acb7c5392a4b3bc8ec2cdc7c31171708965043

    SHA512

    2ca5ad1d0e12a8049de885b90b7f56fe77c868e0d6dae4ec4b6f3bc0bf7b2e73295cc9b1328c2b45357ffb0d7804622ab3f91a56140b098e93b691032d508156

  • \Users\Admin\AppData\Local\Temp\3582-490\71037728ddcea1b094b4bc48fa92b2a0895f009f17e0e9354a3dc5fb0077e8bc.exe
    MD5

    933f2b5b95fbf6ebd96edf95112018ad

    SHA1

    e63bfa99a18f1e370727a005b092aafac7b2a398

    SHA256

    6d816af5a10da2892d27023b1ef0d9b47da019e102e56ab8e6943421279f41e9

    SHA512

    fbbcb9a3801b39e0647e5f30d33321f94d83b5ec4047089a2b93b93cb6ac4a116a77f62f38a86820c93427d0e4181d33ccc4b003c15bcac1a0f9d7e62b89999e

  • \Users\Admin\AppData\Local\Temp\3582-490\71037728ddcea1b094b4bc48fa92b2a0895f009f17e0e9354a3dc5fb0077e8bc.exe
    MD5

    933f2b5b95fbf6ebd96edf95112018ad

    SHA1

    e63bfa99a18f1e370727a005b092aafac7b2a398

    SHA256

    6d816af5a10da2892d27023b1ef0d9b47da019e102e56ab8e6943421279f41e9

    SHA512

    fbbcb9a3801b39e0647e5f30d33321f94d83b5ec4047089a2b93b93cb6ac4a116a77f62f38a86820c93427d0e4181d33ccc4b003c15bcac1a0f9d7e62b89999e

  • memory/684-70-0x0000000000400000-0x000000000043C000-memory.dmp
    Filesize

    240KB

  • memory/684-69-0x0000000000400000-0x000000000043C000-memory.dmp
    Filesize

    240KB

  • memory/684-74-0x00000000049E0000-0x00000000049E1000-memory.dmp
    Filesize

    4KB

  • memory/684-73-0x0000000074A00000-0x00000000750EE000-memory.dmp
    Filesize

    6.9MB

  • memory/684-72-0x0000000000400000-0x000000000043C000-memory.dmp
    Filesize

    240KB

  • memory/684-66-0x0000000000400000-0x000000000043C000-memory.dmp
    Filesize

    240KB

  • memory/684-67-0x0000000000400000-0x000000000043C000-memory.dmp
    Filesize

    240KB

  • memory/684-68-0x0000000000400000-0x000000000043C000-memory.dmp
    Filesize

    240KB

  • memory/1212-59-0x0000000000ED0000-0x0000000000FAA000-memory.dmp
    Filesize

    872KB

  • memory/1212-58-0x0000000074A00000-0x00000000750EE000-memory.dmp
    Filesize

    6.9MB

  • memory/1212-61-0x00000000005A0000-0x00000000005A1000-memory.dmp
    Filesize

    4KB

  • memory/1212-64-0x0000000004AE0000-0x0000000004B90000-memory.dmp
    Filesize

    704KB

  • memory/1212-63-0x0000000000580000-0x000000000058C000-memory.dmp
    Filesize

    48KB

  • memory/1560-54-0x0000000075AB1000-0x0000000075AB3000-memory.dmp
    Filesize

    8KB