Analysis

  • max time kernel
    145s
  • max time network
    147s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
  • submitted
    15-01-2024 01:45

General

  • Target

    5bd0a490d12a95b525941ea1ccf50ff6.exe

  • Size

    413KB

  • MD5

    5bd0a490d12a95b525941ea1ccf50ff6

  • SHA1

    1d59862b2114a5e46056eb033e4fbf6a41e3d456

  • SHA256

    9712b14a2555354eaeac47c14fc1f1fa1a83e21b0298a0b502732ee8c1d69d3c

  • SHA512

    993d957703cf6ee1401dc4ef7701818e7dcf10c102e621cec326059f3bb56fc248a8ada1176fafb7db20c98719a93ac5345a9b3034891bace3d05a36048ff4ca

  • SSDEEP

    6144:XdHpBQPIDKpgLL4G6dNew3m7Kx8Ftk99Vn6N7+T0T:PBQADKp20ow3EKS7AVnp0

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

Olivia.duia.ro:85

olivia.urown.cloud:85

Mutex

7878d6ae-2199-42d9-b1ae-d01b73f7f35b

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    olivia.urown.cloud

  • backup_dns_server

  • buffer_size

    65535

  • build_time

    2020-03-12T20:10:20.855614936Z

  • bypass_user_account_control

    true

  • bypass_user_account_control_data

  • clear_access_control

    true

  • clear_zone_identifier

    true

  • connect_delay

    4000

  • connection_port

    85

  • default_group

    777

  • 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

    7878d6ae-2199-42d9-b1ae-d01b73f7f35b

  • mutex_timeout

    5000

  • prevent_system_sleep

    true

  • primary_connection_host

    Olivia.duia.ro

  • primary_dns_server

  • 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

  • NanoCore

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

  • ReZer0 packer 1 IoCs

    Detects ReZer0, a packer with multiple versions used in various campaigns.

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

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

  • Creates scheduled task(s) 1 TTPs 1 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 16 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\5bd0a490d12a95b525941ea1ccf50ff6.exe
    "C:\Users\Admin\AppData\Local\Temp\5bd0a490d12a95b525941ea1ccf50ff6.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2508
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\jQHFRlVASwLP" /XML "C:\Users\Admin\AppData\Local\Temp\tmpBD47.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:2368
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
      "{path}"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      PID:2988

Network

MITRE ATT&CK Matrix ATT&CK v13

Execution

Scheduled Task/Job

1
T1053

Persistence

Scheduled Task/Job

1
T1053

Privilege Escalation

Scheduled Task/Job

1
T1053

Discovery

System Information Discovery

1
T1082

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmpBD47.tmp
    Filesize

    1KB

    MD5

    58d29c083cede3594c90715105a882a7

    SHA1

    c8ee639810ac0e1f9b7f64e19b86d2ef51e50f66

    SHA256

    2491243b6e4d4e1ca56c829e7b7a6a222e09d6e3e6ed84857c89aaa7a550cbe4

    SHA512

    052e12ff3c4adb7bcf9af672d15859e10d127267069dfe708008af96f6b68a1801942e499110d9229259d03344b03bd308a207e8a31ab2ce2e15729f3ea47cd1

  • memory/2508-0-0x0000000000E30000-0x0000000000E9C000-memory.dmp
    Filesize

    432KB

  • memory/2508-1-0x0000000074BF0000-0x00000000752DE000-memory.dmp
    Filesize

    6.9MB

  • memory/2508-2-0x0000000004DF0000-0x0000000004E30000-memory.dmp
    Filesize

    256KB

  • memory/2508-3-0x0000000000310000-0x0000000000318000-memory.dmp
    Filesize

    32KB

  • memory/2508-4-0x0000000000DE0000-0x0000000000E20000-memory.dmp
    Filesize

    256KB

  • memory/2508-5-0x0000000074BF0000-0x00000000752DE000-memory.dmp
    Filesize

    6.9MB

  • memory/2508-6-0x0000000004DF0000-0x0000000004E30000-memory.dmp
    Filesize

    256KB

  • memory/2508-22-0x0000000074BF0000-0x00000000752DE000-memory.dmp
    Filesize

    6.9MB

  • memory/2988-16-0x000000007EFDE000-0x000000007EFDF000-memory.dmp
    Filesize

    4KB

  • memory/2988-10-0x0000000000400000-0x0000000000438000-memory.dmp
    Filesize

    224KB

  • memory/2988-14-0x0000000000400000-0x0000000000438000-memory.dmp
    Filesize

    224KB

  • memory/2988-11-0x0000000000400000-0x0000000000438000-memory.dmp
    Filesize

    224KB

  • memory/2988-18-0x0000000000400000-0x0000000000438000-memory.dmp
    Filesize

    224KB

  • memory/2988-20-0x0000000000400000-0x0000000000438000-memory.dmp
    Filesize

    224KB

  • memory/2988-23-0x0000000000400000-0x0000000000438000-memory.dmp
    Filesize

    224KB

  • memory/2988-12-0x0000000000400000-0x0000000000438000-memory.dmp
    Filesize

    224KB

  • memory/2988-24-0x0000000074500000-0x0000000074BEE000-memory.dmp
    Filesize

    6.9MB

  • memory/2988-25-0x0000000004D70000-0x0000000004DB0000-memory.dmp
    Filesize

    256KB

  • memory/2988-27-0x00000000002B0000-0x00000000002BA000-memory.dmp
    Filesize

    40KB

  • memory/2988-29-0x00000000003E0000-0x00000000003EA000-memory.dmp
    Filesize

    40KB

  • memory/2988-28-0x00000000003C0000-0x00000000003DE000-memory.dmp
    Filesize

    120KB

  • memory/2988-30-0x0000000074500000-0x0000000074BEE000-memory.dmp
    Filesize

    6.9MB

  • memory/2988-31-0x0000000004D70000-0x0000000004DB0000-memory.dmp
    Filesize

    256KB