Analysis

  • max time kernel
    161s
  • max time network
    167s
  • platform
    windows10_x64
  • resource
    win10-en-20210920
  • submitted
    11-10-2021 13:25

General

  • Target

    ee9255119e7137141de1028b5a8e5ee7ab849ff4f49aa70c1062e47b65f62809.exe

  • Size

    994KB

  • MD5

    3f6f7c01dc86ddaabade6d6665967c0a

  • SHA1

    c5f2111e8d89127036f2c87fc799a1721ba0952c

  • SHA256

    ee9255119e7137141de1028b5a8e5ee7ab849ff4f49aa70c1062e47b65f62809

  • SHA512

    7955073b51e1d4d55b2b58e66485f6d2dbf69786eb537274705a00864e19da63fd559640e340826e0e7e62250eccf987f66df7938ca53563a01cd14946e3bd94

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.privateemail.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    office12#

Extracted

Family

nanocore

Version

1.2.2.0

C2

185.140.53.52:4488

Mutex

4457cc23-84d1-4515-bdf3-bc83fe8472db

Attributes
  • activate_away_mode

    true

  • backup_connection_host

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2021-07-08T12:51:02.136438436Z

  • bypass_user_account_control

    false

  • bypass_user_account_control_data

    PD94bWwgdmVyc2lvbj0iMS4wIiBlbmNvZGluZz0iVVRGLTE2Ij8+DQo8VGFzayB2ZXJzaW9uPSIxLjIiIHhtbG5zPSJodHRwOi8vc2NoZW1hcy5taWNyb3NvZnQuY29tL3dpbmRvd3MvMjAwNC8wMi9taXQvdGFzayI+DQogIDxSZWdpc3RyYXRpb25JbmZvIC8+DQogIDxUcmlnZ2VycyAvPg0KICA8UHJpbmNpcGFscz4NCiAgICA8UHJpbmNpcGFsIGlkPSJBdXRob3IiPg0KICAgICAgPExvZ29uVHlwZT5JbnRlcmFjdGl2ZVRva2VuPC9Mb2dvblR5cGU+DQogICAgICA8UnVuTGV2ZWw+SGlnaGVzdEF2YWlsYWJsZTwvUnVuTGV2ZWw+DQogICAgPC9QcmluY2lwYWw+DQogIDwvUHJpbmNpcGFscz4NCiAgPFNldHRpbmdzPg0KICAgIDxNdWx0aXBsZUluc3RhbmNlc1BvbGljeT5QYXJhbGxlbDwvTXVsdGlwbGVJbnN0YW5jZXNQb2xpY3k+DQogICAgPERpc2FsbG93U3RhcnRJZk9uQmF0dGVyaWVzPmZhbHNlPC9EaXNhbGxvd1N0YXJ0SWZPbkJhdHRlcmllcz4NCiAgICA8U3RvcElmR29pbmdPbkJhdHRlcmllcz5mYWxzZTwvU3RvcElmR29pbmdPbkJhdHRlcmllcz4NCiAgICA8QWxsb3dIYXJkVGVybWluYXRlPnRydWU8L0FsbG93SGFyZFRlcm1pbmF0ZT4NCiAgICA8U3RhcnRXaGVuQXZhaWxhYmxlPmZhbHNlPC9TdGFydFdoZW5BdmFpbGFibGU+DQogICAgPFJ1bk9ubHlJZk5ldHdvcmtBdmFpbGFibGU+ZmFsc2U8L1J1bk9ubHlJZk5ldHdvcmtBdmFpbGFibGU+DQogICAgPElkbGVTZXR0aW5ncz4NCiAgICAgIDxTdG9wT25JZGxlRW5kPmZhbHNlPC9TdG9wT25JZGxlRW5kPg0KICAgICAgPFJlc3RhcnRPbklkbGU+ZmFsc2U8L1Jlc3RhcnRPbklkbGU+DQogICAgPC9JZGxlU2V0dGluZ3M+DQogICAgPEFsbG93U3RhcnRPbkRlbWFuZD50cnVlPC9BbGxvd1N0YXJ0T25EZW1hbmQ+DQogICAgPEVuYWJsZWQ+dHJ1ZTwvRW5hYmxlZD4NCiAgICA8SGlkZGVuPmZhbHNlPC9IaWRkZW4+DQogICAgPFJ1bk9ubHlJZklkbGU+ZmFsc2U8L1J1bk9ubHlJZklkbGU+DQogICAgPFdha2VUb1J1bj5mYWxzZTwvV2FrZVRvUnVuPg0KICAgIDxFeGVjdXRpb25UaW1lTGltaXQ+UFQwUzwvRXhlY3V0aW9uVGltZUxpbWl0Pg0KICAgIDxQcmlvcml0eT40PC9Qcmlvcml0eT4NCiAgPC9TZXR0aW5ncz4NCiAgPEFjdGlvbnMgQ29udGV4dD0iQXV0aG9yIj4NCiAgICA8RXhlYz4NCiAgICAgIDxDb21tYW5kPiIjRVhFQ1VUQUJMRVBBVEgiPC9Db21tYW5kPg0KICAgICAgPEFyZ3VtZW50cz4kKEFyZzApPC9Bcmd1bWVudHM+DQogICAgPC9FeGVjPg0KICA8L0FjdGlvbnM+DQo8L1Rhc2s+

  • clear_access_control

    true

  • clear_zone_identifier

    false

  • connect_delay

    4000

  • connection_port

    4488

  • default_group

    EXPO

  • enable_debug_mode

    true

  • gc_threshold

    1.048576e+07

  • keep_alive_timeout

    30000

  • keyboard_logging

    false

  • lan_timeout

    2500

  • max_packet_size

    1.048576e+07

  • mutex

    4457cc23-84d1-4515-bdf3-bc83fe8472db

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    185.140.53.52

  • primary_dns_server

    8.8.8.8

  • request_elevation

    true

  • restart_delay

    5000

  • run_delay

    0

  • run_on_startup

    false

  • set_critical_process

    true

  • timeout_interval

    5000

  • use_custom_dns_server

    false

  • version

    1.2.2.0

  • wan_timeout

    8000

Signatures

  • AgentTesla

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

  • NanoCore

    NanoCore is a remote access tool (RAT) with a variety of capabilities.

  • AgentTesla Payload 2 IoCs
  • Executes dropped EXE 3 IoCs
  • Obfuscated with Agile.Net obfuscator 3 IoCs

    Detects use of the Agile.Net commercial obfuscator, which is capable of entity renaming and control flow obfuscation.

  • 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
  • Adds Run key to start application 2 TTPs 3 IoCs
  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Drops file in Program Files directory 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Creates scheduled task(s) 1 TTPs 2 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 22 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 26 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\ee9255119e7137141de1028b5a8e5ee7ab849ff4f49aa70c1062e47b65f62809.exe
    "C:\Users\Admin\AppData\Local\Temp\ee9255119e7137141de1028b5a8e5ee7ab849ff4f49aa70c1062e47b65f62809.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2160
    • C:\Windows\SysWOW64\cmd.exe
      "cmd.exe" /c REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "expooo" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\expooo.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3436
      • C:\Windows\SysWOW64\reg.exe
        REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "expooo" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\expooo.exe"
        3⤵
        • Adds Run key to start application
        PID:1540
    • C:\Users\Admin\AppData\Roaming\expooo.exe
      "C:\Users\Admin\AppData\Roaming\expooo.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetThreadContext
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1756
      • C:\Users\Admin\AppData\Roaming\ammero.exe
        "C:\Users\Admin\AppData\Roaming\ammero.exe"
        3⤵
        • Executes dropped EXE
        • Accesses Microsoft Outlook profiles
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        • outlook_office_path
        • outlook_win_path
        PID:772
      • C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe
        "C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe"
        3⤵
        • Executes dropped EXE
        • Adds Run key to start application
        • Checks whether UAC is enabled
        • Drops file in Program Files directory
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious behavior: GetForegroundWindowSpam
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:1172
        • C:\Windows\SysWOW64\schtasks.exe
          "schtasks.exe" /create /f /tn "SCSI Service" /xml "C:\Users\Admin\AppData\Local\Temp\tmp91CC.tmp"
          4⤵
          • Creates scheduled task(s)
          PID:4012
        • C:\Windows\SysWOW64\schtasks.exe
          "schtasks.exe" /create /f /tn "SCSI Service Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp9279.tmp"
          4⤵
          • Creates scheduled task(s)
          PID:2020

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

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

    MD5

    91c9ae9c9a17a9db5e08b120e668c74c

    SHA1

    50770954c1ceb0bb6f1d5d3f2de2a0a065773723

    SHA256

    e56a7e5d3ab9675555e2897fc3faa2dd9265008a4967a7d54030ab8184d2d38f

    SHA512

    ca504af192e3318359d4742a2ef26ae1b5d040a4f9942782e02549a310158d5d5dbf919b4c748c31ee609d2046bd23ee0c22712891c86ae4a1e3a58c6e67647e

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

    MD5

    91c9ae9c9a17a9db5e08b120e668c74c

    SHA1

    50770954c1ceb0bb6f1d5d3f2de2a0a065773723

    SHA256

    e56a7e5d3ab9675555e2897fc3faa2dd9265008a4967a7d54030ab8184d2d38f

    SHA512

    ca504af192e3318359d4742a2ef26ae1b5d040a4f9942782e02549a310158d5d5dbf919b4c748c31ee609d2046bd23ee0c22712891c86ae4a1e3a58c6e67647e

  • C:\Users\Admin\AppData\Local\Temp\tmp91CC.tmp

    MD5

    f7eb19c49b51cdff67a25c6876a78241

    SHA1

    6d86be501c2fb57b50292a55d3983b7eee8a688d

    SHA256

    c9dab73a0044021d2acbc3952b19dea98cdfd838afc633197bd1bd12d2562fba

    SHA512

    1e94e363f9d4d0dcdfe0a8457642fcfe4f81dff0b39f1d1f00deab9291e133cd40b48c097dfe52c356d4a15c383e0aa08fae28b136937bcc57d5e01861716740

  • C:\Users\Admin\AppData\Local\Temp\tmp9279.tmp

    MD5

    4e71faa3a77029484cfaba423d96618f

    SHA1

    9c837d050bb43d69dc608af809c292e13bca4718

    SHA256

    c470f45efd2e7c4c5b88534a18965a78dce0f8e154d3e45a9d5569ad0e334bdb

    SHA512

    6d014de41352f2b0b494d94cd58188791e81d4e53578d0722110b6827793b735e19c614877f25c61b26233dea1b5f1998ba1240bdc8fa04c87b7e64a4ca15fe0

  • C:\Users\Admin\AppData\Roaming\ammero.exe

    MD5

    605e939e44cd9b02c55ce0a09019ad47

    SHA1

    9ac8ff474631ed0c3d27a7290979b4880b9784f6

    SHA256

    5ab99263d0101e00809c2fe1f068bbcb601208c3fb0efd753b36169a3a69c589

    SHA512

    5196b9b698a71dc4510a57acabaee22ec2cd3f35c7c82c0ccbc00673ee97b471019a79e4cdb1ec6b5765ef70f1b5aebc19f56b0fa6a9932844c8ae07ba8b2b9d

  • C:\Users\Admin\AppData\Roaming\ammero.exe

    MD5

    605e939e44cd9b02c55ce0a09019ad47

    SHA1

    9ac8ff474631ed0c3d27a7290979b4880b9784f6

    SHA256

    5ab99263d0101e00809c2fe1f068bbcb601208c3fb0efd753b36169a3a69c589

    SHA512

    5196b9b698a71dc4510a57acabaee22ec2cd3f35c7c82c0ccbc00673ee97b471019a79e4cdb1ec6b5765ef70f1b5aebc19f56b0fa6a9932844c8ae07ba8b2b9d

  • C:\Users\Admin\AppData\Roaming\expooo.exe

    MD5

    3f6f7c01dc86ddaabade6d6665967c0a

    SHA1

    c5f2111e8d89127036f2c87fc799a1721ba0952c

    SHA256

    ee9255119e7137141de1028b5a8e5ee7ab849ff4f49aa70c1062e47b65f62809

    SHA512

    7955073b51e1d4d55b2b58e66485f6d2dbf69786eb537274705a00864e19da63fd559640e340826e0e7e62250eccf987f66df7938ca53563a01cd14946e3bd94

  • C:\Users\Admin\AppData\Roaming\expooo.exe

    MD5

    3f6f7c01dc86ddaabade6d6665967c0a

    SHA1

    c5f2111e8d89127036f2c87fc799a1721ba0952c

    SHA256

    ee9255119e7137141de1028b5a8e5ee7ab849ff4f49aa70c1062e47b65f62809

    SHA512

    7955073b51e1d4d55b2b58e66485f6d2dbf69786eb537274705a00864e19da63fd559640e340826e0e7e62250eccf987f66df7938ca53563a01cd14946e3bd94

  • memory/772-144-0x0000000000BD0000-0x0000000000BD1000-memory.dmp

    Filesize

    4KB

  • memory/772-149-0x00000000054E0000-0x00000000059DE000-memory.dmp

    Filesize

    5.0MB

  • memory/772-140-0x0000000000000000-mapping.dmp

  • memory/772-168-0x0000000005560000-0x0000000005561000-memory.dmp

    Filesize

    4KB

  • memory/772-171-0x00000000054E0000-0x00000000059DE000-memory.dmp

    Filesize

    5.0MB

  • memory/1172-165-0x0000000005950000-0x0000000005955000-memory.dmp

    Filesize

    20KB

  • memory/1172-151-0x000000000041E792-mapping.dmp

  • memory/1172-150-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/1172-159-0x0000000003330000-0x0000000003331000-memory.dmp

    Filesize

    4KB

  • memory/1172-160-0x0000000005800000-0x0000000005CFE000-memory.dmp

    Filesize

    5.0MB

  • memory/1172-166-0x0000000005960000-0x0000000005979000-memory.dmp

    Filesize

    100KB

  • memory/1172-167-0x0000000005CF0000-0x0000000005CF3000-memory.dmp

    Filesize

    12KB

  • memory/1540-125-0x0000000000000000-mapping.dmp

  • memory/1756-142-0x0000000007140000-0x000000000714B000-memory.dmp

    Filesize

    44KB

  • memory/1756-138-0x0000000004EF0000-0x00000000053EE000-memory.dmp

    Filesize

    5.0MB

  • memory/1756-139-0x0000000004EF0000-0x00000000053EE000-memory.dmp

    Filesize

    5.0MB

  • memory/1756-127-0x0000000000000000-mapping.dmp

  • memory/1756-147-0x0000000009760000-0x0000000009761000-memory.dmp

    Filesize

    4KB

  • memory/2020-163-0x0000000000000000-mapping.dmp

  • memory/2160-121-0x0000000005A90000-0x0000000005AB1000-memory.dmp

    Filesize

    132KB

  • memory/2160-123-0x0000000006720000-0x0000000006721000-memory.dmp

    Filesize

    4KB

  • memory/2160-115-0x0000000000BD0000-0x0000000000BD1000-memory.dmp

    Filesize

    4KB

  • memory/2160-122-0x0000000006760000-0x0000000006761000-memory.dmp

    Filesize

    4KB

  • memory/2160-126-0x00000000055C0000-0x0000000005ABE000-memory.dmp

    Filesize

    5.0MB

  • memory/2160-120-0x00000000055C0000-0x0000000005ABE000-memory.dmp

    Filesize

    5.0MB

  • memory/2160-119-0x0000000005660000-0x0000000005661000-memory.dmp

    Filesize

    4KB

  • memory/2160-118-0x0000000005500000-0x0000000005501000-memory.dmp

    Filesize

    4KB

  • memory/2160-117-0x0000000005AC0000-0x0000000005AC1000-memory.dmp

    Filesize

    4KB

  • memory/3436-124-0x0000000000000000-mapping.dmp

  • memory/4012-161-0x0000000000000000-mapping.dmp