Analysis

  • max time kernel
    120s
  • max time network
    148s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    21-05-2024 12:46

General

  • Target

    5021036673.exe

  • Size

    461KB

  • MD5

    3b7ef5232e11bd43c48fbbcbaada35ab

  • SHA1

    04c1003f6611b769fc7f900d404ac90d550a12ac

  • SHA256

    8476500f6ecba15ee6e50f37c34bf2ccdd4790b42d0a44737d2626dcaa0e2449

  • SHA512

    ef397e10b854bc6ba465717ef7686de5caab0fdd81b8758c89764cdba5e3b058d621562fac2bc3dd59d89e59e44579029b2cc21013bff691b0f88cb72665b9df

  • SSDEEP

    6144:DVwYYaG3c+iS3oBIOokpsEjb2SfjNhuthxCCfBjhpH3565Xnnz/84DP7/V:r+bOxpsUiS7TutDCVF

Malware Config

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    66.29.151.236
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    s9jjoVvaZchS

Extracted

Family

agenttesla

Credentials

Extracted

Family

nanocore

Version

1.2.2.0

C2

94.156.68.219:2323

Mutex

687022d0-91f8-4a5a-bf22-c3a2c043d015

Attributes
  • activate_away_mode

    true

  • backup_connection_host

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2024-03-02T10:05:36.450504536Z

  • bypass_user_account_control

    true

  • bypass_user_account_control_data

  • clear_access_control

    true

  • clear_zone_identifier

    false

  • connect_delay

    4000

  • connection_port

    2323

  • default_group

    21may04

  • 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

    687022d0-91f8-4a5a-bf22-c3a2c043d015

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    94.156.68.219

  • primary_dns_server

    8.8.8.8

  • request_elevation

    true

  • restart_delay

    5000

  • run_delay

    0

  • run_on_startup

    true

  • 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.

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 1 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.

  • Adds Run key to start application 2 TTPs 2 IoCs
  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Looks up external IP address via web service 2 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Suspicious use of SetThreadContext 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 6 IoCs
  • Suspicious use of WriteProcessMemory 19 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\5021036673.exe
    "C:\Users\Admin\AppData\Local\Temp\5021036673.exe"
    1⤵
    • Checks computer location settings
    • Adds Run key to start application
    • Suspicious use of SetThreadContext
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:848
    • C:\Users\Admin\AppData\Local\Temp\Pgfmnlkveb.exe
      "C:\Users\Admin\AppData\Local\Temp\Pgfmnlkveb.exe"
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      • Suspicious use of SetThreadContext
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:4736
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
        "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
        3⤵
        • Checks whether UAC is enabled
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious behavior: GetForegroundWindowSpam
        • Suspicious use of AdjustPrivilegeToken
        PID:216
    • C:\Users\Admin\AppData\Local\Temp\5021036673.exe
      "C:\Users\Admin\AppData\Local\Temp\5021036673.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4360

Network

MITRE ATT&CK Matrix ATT&CK v13

Persistence

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Defense Evasion

Modify Registry

1
T1112

Credential Access

Unsecured Credentials

4
T1552

Credentials In Files

3
T1552.001

Credentials in Registry

1
T1552.002

Discovery

Query Registry

1
T1012

System Information Discovery

3
T1082

Collection

Data from Local System

4
T1005

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\5021036673.exe.log
    Filesize

    1KB

    MD5

    489c7565f9b029ba9fadff774073cc98

    SHA1

    56c05089b33ee7e7dfa9e6a2d098164efd8e1150

    SHA256

    10bf6242da02dad8b2e1208b9dab9a7303cf986320e05e5ef20b99c9b71326d4

    SHA512

    ddea09c011a8d4f85905842c2f34c98add0110a0b6b3b2709718c3614a2c42dec5f4f5d5b9442cfd3c6c23e9a90c8c0b25c14c3dbd42faea9cc8dd232cace1ac

  • C:\Users\Admin\AppData\Local\Temp\Pgfmnlkveb.exe
    Filesize

    461KB

    MD5

    3096b4b10cadb369dfe4bf9baeb90fb9

    SHA1

    9c4901dd318cb7aa215b5b9729c368d0567cc42c

    SHA256

    7369e401e7fc860dca295f09625f4ef16235db5cad392e1c6ab4607c22b729dd

    SHA512

    49297c01ade6fcf408e2defc6f143ca7db2822acd2d2a9d9614e2272f7df02d64d815f262d158441c695769ae917a5a9216b86185377e817ce2f980f688c84f8

  • \??\c:\users\admin\appdata\roaming\notepads.exe
    Filesize

    128KB

    MD5

    e97516890aa76265224a63c87784e51b

    SHA1

    732a1646b65e83bed1c14be1c0edf24dcc9c35ed

    SHA256

    2aa5a386b24d6a80e6bdc9465c312a11ebbf9ec968f4047e992f5d478be77d05

    SHA512

    d76a2e97f03bd57d21f094c62661218dd12d8a238eba7c865c55af2aba93dd725961eae9a2ee953b9211dcf5902f8c716543af4cba356291cec020eaaa2cdc20

  • memory/216-9833-0x00000000063C0000-0x00000000063CE000-memory.dmp
    Filesize

    56KB

  • memory/216-9830-0x0000000006390000-0x000000000639E000-memory.dmp
    Filesize

    56KB

  • memory/216-9835-0x00000000063E0000-0x00000000063F0000-memory.dmp
    Filesize

    64KB

  • memory/216-9832-0x00000000063B0000-0x00000000063BC000-memory.dmp
    Filesize

    48KB

  • memory/216-9834-0x00000000063D0000-0x00000000063E4000-memory.dmp
    Filesize

    80KB

  • memory/216-9837-0x0000000006420000-0x000000000642E000-memory.dmp
    Filesize

    56KB

  • memory/216-9831-0x00000000063A0000-0x00000000063B2000-memory.dmp
    Filesize

    72KB

  • memory/216-9836-0x0000000006400000-0x0000000006414000-memory.dmp
    Filesize

    80KB

  • memory/216-9829-0x0000000006360000-0x000000000637A000-memory.dmp
    Filesize

    104KB

  • memory/216-9828-0x0000000006350000-0x0000000006362000-memory.dmp
    Filesize

    72KB

  • memory/216-9825-0x0000000005E30000-0x0000000005E3A000-memory.dmp
    Filesize

    40KB

  • memory/216-9824-0x0000000005BF0000-0x0000000005C0E000-memory.dmp
    Filesize

    120KB

  • memory/216-9823-0x00000000052B0000-0x00000000052BA000-memory.dmp
    Filesize

    40KB

  • memory/216-9821-0x0000000000400000-0x0000000000438000-memory.dmp
    Filesize

    224KB

  • memory/216-9838-0x0000000006430000-0x000000000645E000-memory.dmp
    Filesize

    184KB

  • memory/216-9839-0x0000000006460000-0x0000000006474000-memory.dmp
    Filesize

    80KB

  • memory/848-4892-0x00000000059F0000-0x0000000005A8C000-memory.dmp
    Filesize

    624KB

  • memory/848-49-0x00000000084C0000-0x0000000008719000-memory.dmp
    Filesize

    2.3MB

  • memory/848-37-0x00000000084C0000-0x0000000008719000-memory.dmp
    Filesize

    2.3MB

  • memory/848-35-0x00000000084C0000-0x0000000008719000-memory.dmp
    Filesize

    2.3MB

  • memory/848-33-0x00000000084C0000-0x0000000008719000-memory.dmp
    Filesize

    2.3MB

  • memory/848-31-0x00000000084C0000-0x0000000008719000-memory.dmp
    Filesize

    2.3MB

  • memory/848-29-0x00000000084C0000-0x0000000008719000-memory.dmp
    Filesize

    2.3MB

  • memory/848-27-0x00000000084C0000-0x0000000008719000-memory.dmp
    Filesize

    2.3MB

  • memory/848-23-0x00000000084C0000-0x0000000008719000-memory.dmp
    Filesize

    2.3MB

  • memory/848-21-0x00000000084C0000-0x0000000008719000-memory.dmp
    Filesize

    2.3MB

  • memory/848-19-0x00000000084C0000-0x0000000008719000-memory.dmp
    Filesize

    2.3MB

  • memory/848-59-0x00000000084C0000-0x0000000008719000-memory.dmp
    Filesize

    2.3MB

  • memory/848-57-0x00000000084C0000-0x0000000008719000-memory.dmp
    Filesize

    2.3MB

  • memory/848-65-0x00000000084C0000-0x0000000008719000-memory.dmp
    Filesize

    2.3MB

  • memory/848-63-0x00000000084C0000-0x0000000008719000-memory.dmp
    Filesize

    2.3MB

  • memory/848-61-0x00000000084C0000-0x0000000008719000-memory.dmp
    Filesize

    2.3MB

  • memory/848-67-0x00000000084C0000-0x0000000008719000-memory.dmp
    Filesize

    2.3MB

  • memory/848-15-0x00000000084C0000-0x0000000008719000-memory.dmp
    Filesize

    2.3MB

  • memory/848-9-0x00000000084C0000-0x0000000008719000-memory.dmp
    Filesize

    2.3MB

  • memory/848-4890-0x0000000075220000-0x00000000759D0000-memory.dmp
    Filesize

    7.7MB

  • memory/848-4891-0x00000000059C0000-0x00000000059C6000-memory.dmp
    Filesize

    24KB

  • memory/848-43-0x00000000084C0000-0x0000000008719000-memory.dmp
    Filesize

    2.3MB

  • memory/848-4893-0x0000000005A90000-0x0000000005ADC000-memory.dmp
    Filesize

    304KB

  • memory/848-4894-0x000000007522E000-0x000000007522F000-memory.dmp
    Filesize

    4KB

  • memory/848-4895-0x0000000075220000-0x00000000759D0000-memory.dmp
    Filesize

    7.7MB

  • memory/848-4896-0x0000000075220000-0x00000000759D0000-memory.dmp
    Filesize

    7.7MB

  • memory/848-4909-0x0000000006A90000-0x0000000007034000-memory.dmp
    Filesize

    5.6MB

  • memory/848-4910-0x0000000005850000-0x00000000058A4000-memory.dmp
    Filesize

    336KB

  • memory/848-4917-0x0000000075220000-0x00000000759D0000-memory.dmp
    Filesize

    7.7MB

  • memory/848-0-0x000000007522E000-0x000000007522F000-memory.dmp
    Filesize

    4KB

  • memory/848-45-0x00000000084C0000-0x0000000008719000-memory.dmp
    Filesize

    2.3MB

  • memory/848-1-0x00000000005E0000-0x0000000000656000-memory.dmp
    Filesize

    472KB

  • memory/848-2-0x0000000075220000-0x00000000759D0000-memory.dmp
    Filesize

    7.7MB

  • memory/848-3-0x00000000084C0000-0x0000000008720000-memory.dmp
    Filesize

    2.4MB

  • memory/848-5-0x00000000084C0000-0x0000000008719000-memory.dmp
    Filesize

    2.3MB

  • memory/848-4-0x00000000084C0000-0x0000000008719000-memory.dmp
    Filesize

    2.3MB

  • memory/848-7-0x00000000084C0000-0x0000000008719000-memory.dmp
    Filesize

    2.3MB

  • memory/848-11-0x00000000084C0000-0x0000000008719000-memory.dmp
    Filesize

    2.3MB

  • memory/848-13-0x00000000084C0000-0x0000000008719000-memory.dmp
    Filesize

    2.3MB

  • memory/848-17-0x00000000084C0000-0x0000000008719000-memory.dmp
    Filesize

    2.3MB

  • memory/848-25-0x00000000084C0000-0x0000000008719000-memory.dmp
    Filesize

    2.3MB

  • memory/848-41-0x00000000084C0000-0x0000000008719000-memory.dmp
    Filesize

    2.3MB

  • memory/848-55-0x00000000084C0000-0x0000000008719000-memory.dmp
    Filesize

    2.3MB

  • memory/848-53-0x00000000084C0000-0x0000000008719000-memory.dmp
    Filesize

    2.3MB

  • memory/848-51-0x00000000084C0000-0x0000000008719000-memory.dmp
    Filesize

    2.3MB

  • memory/848-47-0x00000000084C0000-0x0000000008719000-memory.dmp
    Filesize

    2.3MB

  • memory/848-39-0x00000000084C0000-0x0000000008719000-memory.dmp
    Filesize

    2.3MB

  • memory/4360-4922-0x00000000065D0000-0x000000000666C000-memory.dmp
    Filesize

    624KB

  • memory/4360-4916-0x0000000000400000-0x0000000000442000-memory.dmp
    Filesize

    264KB

  • memory/4360-9814-0x0000000075220000-0x00000000759D0000-memory.dmp
    Filesize

    7.7MB

  • memory/4360-4918-0x0000000075220000-0x00000000759D0000-memory.dmp
    Filesize

    7.7MB

  • memory/4360-4919-0x00000000050F0000-0x0000000005156000-memory.dmp
    Filesize

    408KB

  • memory/4360-5006-0x0000000006710000-0x00000000067A2000-memory.dmp
    Filesize

    584KB

  • memory/4360-5007-0x00000000066A0000-0x00000000066AA000-memory.dmp
    Filesize

    40KB

  • memory/4360-4920-0x0000000075220000-0x00000000759D0000-memory.dmp
    Filesize

    7.7MB

  • memory/4360-4921-0x00000000064E0000-0x0000000006530000-memory.dmp
    Filesize

    320KB

  • memory/4736-9812-0x0000000005340000-0x0000000005346000-memory.dmp
    Filesize

    24KB

  • memory/4736-4908-0x00000000001D0000-0x0000000000246000-memory.dmp
    Filesize

    472KB

  • memory/4736-4911-0x0000000075220000-0x00000000759D0000-memory.dmp
    Filesize

    7.7MB

  • memory/4736-4923-0x0000000007F70000-0x00000000081B2000-memory.dmp
    Filesize

    2.3MB

  • memory/4736-9820-0x0000000075220000-0x00000000759D0000-memory.dmp
    Filesize

    7.7MB

  • memory/4736-9813-0x0000000005410000-0x000000000548E000-memory.dmp
    Filesize

    504KB

  • memory/4736-9815-0x0000000075220000-0x00000000759D0000-memory.dmp
    Filesize

    7.7MB