Overview

overview

10

Static

static

INV3677290.xlsx

windows7_x64

10

INV3677290.xlsx

windows10_x64

1

Analysis

  • max time kernel
    147s
  • max time network
    155s
  • platform
    windows7_x64
  • resource
    win7v200430
  • submitted
    30-06-2020 07:15

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General

  • Target

    INV3677290.xlsx

  • Size

    598KB

  • MD5

    557d7d397e7566fde718dd615add8e67

  • SHA1

    9ee2b02b3bc95d1ecaf9699198474e63c7b6d367

  • SHA256

    3c321c5bdc82d554ea695bb5927a9c23ffa7dd9301fabc68981ad4e0ac956a51

  • SHA512

    64ebf2803477edf7ccd614d286cbef6f3f7604b4f60de89f5a7a96199e44b4ddb19543dde3663b6080ab60f93185ccd3b40c7295a0e073188a28614f697eff14

Score
10/10
persistenceevasiontrojankeyloggerstealerspywarenanocore

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

mogs20.hopto.org:1085

185.244.30.251:1085
Mutex

1c8e1b25-da1c-4b7f-872b-7991ecf830f7

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    185.244.30.251

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2020-03-26T22:47:50.934251036Z

  • bypass_user_account_control

    true

  • bypass_user_account_control_data

  • clear_access_control

    true

  • clear_zone_identifier

    false

  • connect_delay

    4000

  • connection_port

    1085

  • default_group

    ANGEL RAPHAEL

  • 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

    1c8e1b25-da1c-4b7f-872b-7991ecf830f7

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    mogs20.hopto.org

  • 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

  • Suspicious use of WriteProcessMemory 12 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Adds Run entry to start application 2 TTPs 1 IoCs
    persistence
  • Uses the VBS compiler for execution 1 TTPs
  • Checks whether UAC is enabled 1 TTPs 1 IoCs
    evasiontrojan
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Launches Equation Editor 1 TTPs 1 IoCs

    Equation Editor is an old Office component often targeted by exploits such as CVE-2017-11882.

    exploit
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Blacklisted process makes network request 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 104 IoCs
  • NanoCore

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

    keyloggertrojanstealerspywarenanocore
  • Loads dropped DLL 4 IoCs
  • Executes dropped EXE 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes

  • C:\Program Files\Microsoft Office\Office14\EXCEL.EXE
    "C:\Program Files\Microsoft Office\Office14\EXCEL.EXE" /dde C:\Users\Admin\AppData\Local\Temp\INV3677290.xlsx
    1⤵
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of SetWindowsHookEx
    PID:1056
  • C:\Program Files\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE
    "C:\Program Files\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE" -Embedding
    1⤵
    • Suspicious use of WriteProcessMemory
    • Launches Equation Editor
    • Blacklisted process makes network request
    • Loads dropped DLL
    PID:592
    • C:\Users\Admin\AppData\Roaming\vbc.exe
      "C:\Users\Admin\AppData\Roaming\vbc.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      • Suspicious behavior: MapViewOfSection
      • Adds Run entry to start application
      • Suspicious use of SetThreadContext
      • Suspicious behavior: EnumeratesProcesses
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:1788
      • 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: GetForegroundWindowSpam
        • Suspicious use of AdjustPrivilegeToken
        PID:1172

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scripting

1
T1064

Exploitation for Client Execution

1
T1203

Persistence

Registry Run Keys / Startup Folder

1
T1060

Privilege Escalation

Defense Evasion

Modify Registry

1
T1112

Scripting

1
T1064

Credential Access

Discovery

System Information Discovery

1
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Roaming\vbc.exe
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  • C:\Users\Admin\AppData\Roaming\vbc.exe
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  • \Users\Admin\AppData\Roaming\vbc.exe
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  • \Users\Admin\AppData\Roaming\vbc.exe
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  • \Users\Admin\AppData\Roaming\vbc.exe
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  • \Users\Admin\AppData\Roaming\vbc.exe
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  • memory/1172-8-0x000000000041E792-mapping.dmp
    Download
  • memory/1172-7-0x0000000000400000-0x000000000047E000-memory.dmp
    Filesize

    504KB

    Download
  • memory/1172-9-0x0000000000400000-0x000000000047E000-memory.dmp
    Filesize

    504KB

    Download
  • memory/1172-10-0x0000000000400000-0x000000000047E000-memory.dmp
    Filesize

    504KB

    Download
  • memory/1788-4-0x0000000000000000-mapping.dmp
    Download