Overview

overview

10

Static

static

RAHIM_TR.exe

windows7_x64

10

RAHIM_TR.exe

windows10-2004_x64

10

Analysis

  • max time kernel
    170s
  • max time network
    175s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    20-05-2022 22:45

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General

  • Target

    RAHIM_TR.exe

  • Size

    678KB

  • MD5

    c51d8463c81efb97b01612fb123a5487

  • SHA1

    4653182de7be95a630fb98bde3232049daee816c

  • SHA256

    240159852a07d731922811db6650130ff93a374e2128e72bf2b7cf8b52fe551e

  • SHA512

    30371d92cc222d46653b662ab5083b7dca61d50f86ac409a64d7d16da57fed213d247d1bd7962ed7ee3d84b14539bf96040f068ce7f5cdfad138f7690b162c3d

Score
10/10
nanocoreevasionkeyloggerpersistencespywarestealertrojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

194.5.97.7:21600

127.0.0.1:21600
Mutex

e5b96bc8-7801-4aaf-bd22-9b94311755e4

Attributes
  • activate_away_mode

    false

  • backup_connection_host

    127.0.0.1

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2020-05-22T19:43:27.532173036Z

  • bypass_user_account_control

    true

  • bypass_user_account_control_data

  • clear_access_control

    true

  • clear_zone_identifier

    false

  • connect_delay

    4000

  • connection_port

    21600

  • default_group

    Default

  • 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

    e5b96bc8-7801-4aaf-bd22-9b94311755e4

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    194.5.97.7

  • primary_dns_server

    8.8.8.8

  • request_elevation

    false

  • 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

  • NanoCore

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

    keyloggertrojanstealerspywarenanocore
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Adds Run key to start application 2 TTPs 1 IoCs
    persistence
  • Checks whether UAC is enabled 1 TTPs 1 IoCs
    evasiontrojan
  • 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 1 IoCs

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

    persistence
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\RAHIM_TR.exe
    "C:\Users\Admin\AppData\Local\Temp\RAHIM_TR.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2944
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\oFxLYQpK" /XML "C:\Users\Admin\AppData\Local\Temp\tmpA72D.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:1716
    • C:\Users\Admin\AppData\Local\Temp\RAHIM_TR.exe
      "C:\Users\Admin\AppData\Local\Temp\RAHIM_TR.exe"
      2⤵
      • 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
      PID:4464

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1
T1053

Persistence

Registry Run Keys / Startup Folder

1
T1060

Scheduled Task

1
T1053

Privilege Escalation

Scheduled Task

1
T1053

Defense Evasion

Modify Registry

1
T1112

Credential Access

Discovery

Query Registry

1
T1012

System Information Discovery

3
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v2.0_32\UsageLogs\RAHIM_TR.exe.log
    Filesize

    496B

    MD5

    5b4789d01bb4d7483b71e1a35bce6a8b

    SHA1

    de083f2131c9a763c0d1810c97a38732146cffbf

    SHA256

    e248cef9500ed6e0c9f99d72a2a6a36955a5f0cfc0725748ef25a733cc8282f6

    SHA512

    357e18ef30430e4b9cc4f2569b9735b1cd12f934c83162e4de78ac29ba9703b63ddb624ccc22afd5a5868f6e9d91a3c64581846abac22e9625f5b2e3d80b3ede

    Download Submit
  • C:\Users\Admin\AppData\Local\Temp\tmpA72D.tmp
    Filesize

    1KB

    MD5

    b8a133c316da41aca286d56800ee4895

    SHA1

    71441812a84002f8e818374ccb35246e75ba4f6d

    SHA256

    e4cb85ac448d46a5caecc1d21837eb3910aa672e935343747f3066070dd07d3b

    SHA512

    0e8a431c1fbf1305552b3af7d80583ba7508f060732aae89f39d2bd834ed48458cf9be2fb5b7ace7d5bb8ff07b8a4920912c4b090101fd62c56f9d943aacf003

    Download Submit
  • memory/1716-131-0x0000000000000000-mapping.dmp
    Download
  • memory/2944-130-0x00000000752A0000-0x0000000075851000-memory.dmp
    Filesize

    5.7MB

    Download
  • memory/4464-133-0x0000000000000000-mapping.dmp
    Download
  • memory/4464-134-0x0000000000400000-0x0000000000438000-memory.dmp
    Filesize

    224KB

    Download
  • memory/4464-136-0x00000000752A0000-0x0000000075851000-memory.dmp
    Filesize

    5.7MB

    Download