nanocore | ebab7ddccea1d6b5a5d4e69bf2dccd2684fc00f5955ca5e6bc5bc51833247232

Analysis

max time kernel
121s
max time network
149s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
17/10/2024, 03:37

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General

Target
gunzipped.exe
Size 732KB
Sample241017-d6f99atfmk
SHA256 ebab7ddccea1d6b5a5d4e69bf2dccd2684fc00f5955ca5e6bc5bc51833247232
MD5 1465433d79bc8b7d788587ed6119da4d
SHA1 39f03590423665166191484ef0c030dc66173d92
SHA512 44b918df538d06ab0492f0779c2d5319197257ba0499c965bd681f0416af0a351f6d97dce086766eedfcd7afafcfde5e33b620833be655fb9e1e9232c7692f11
SSDEEP 12288:iOBK/h58CBLVwHNsy7NnbWIkz4m17dJnQ1kPIi1RveBYT/kR:iOBij8CL4sm2j7dJn1Ii1RWBYu
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

nanocore discovery evasion execution keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

udignost01.ddns.net:2024
79.110.49.176:2024

Mutex

01a61652-cfc8-4cdd-90f8-a8280cbad3f0

Attributes

activate_away_mode
true
backup_connection_host
79.110.49.176
backup_dns_server
8.8.4.4
buffer_size
65535
build_time
2024-07-28T11:44:56.682390236Z
bypass_user_account_control
false
bypass_user_account_control_data
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
clear_access_control
true
clear_zone_identifier
false
connect_delay
4000
connection_port
2024
default_group
pullout
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
01a61652-cfc8-4cdd-90f8-a8280cbad3f0
mutex_timeout
5000
prevent_system_sleep
false
primary_connection_host
udignost01.ddns.net
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

NanoCore
NanoCore is a remote access tool (RAT) with a variety of capabilities.
keylogger trojan stealer spyware nanocore

Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
1896	powershell.exe
1540	powershell.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\ISS Host = "C:\\Program Files (x86)\\ISS Host\\isshost.exe"	gunzipped.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs

evasion trojan

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	gunzipped.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2400 set thread context of 2052	2400	gunzipped.exe	36

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\ISS Host\isshost.exe	gunzipped.exe
File opened for modification	C:\Program Files (x86)\ISS Host\isshost.exe	gunzipped.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 7 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	gunzipped.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	gunzipped.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 3 IoCs

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

persistence execution

Scheduled Task

T1053.005

pid	Process
2124	schtasks.exe
2496	schtasks.exe
2620	schtasks.exe

Suspicious behavior: EnumeratesProcesses 15 IoCs

pid	Process
2400	gunzipped.exe
2400	gunzipped.exe
2400	gunzipped.exe
2400	gunzipped.exe
2400	gunzipped.exe
2400	gunzipped.exe
2400	gunzipped.exe
1896	powershell.exe
1540	powershell.exe
2052	gunzipped.exe
2052	gunzipped.exe
2052	gunzipped.exe
2052	gunzipped.exe
2052	gunzipped.exe
2052	gunzipped.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2052	gunzipped.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	2400	gunzipped.exe
Token: SeDebugPrivilege	1540	powershell.exe
Token: SeDebugPrivilege	1896	powershell.exe
Token: SeDebugPrivilege	2052	gunzipped.exe

Suspicious use of WriteProcessMemory 29 IoCs

description	pid	Process	procid_target
PID 2400 wrote to memory of 1896	2400	gunzipped.exe	30
PID 2400 wrote to memory of 1896	2400	gunzipped.exe	30
PID 2400 wrote to memory of 1896	2400	gunzipped.exe	30
PID 2400 wrote to memory of 1896	2400	gunzipped.exe	30
PID 2400 wrote to memory of 1540	2400	gunzipped.exe	32
PID 2400 wrote to memory of 1540	2400	gunzipped.exe	32
PID 2400 wrote to memory of 1540	2400	gunzipped.exe	32
PID 2400 wrote to memory of 1540	2400	gunzipped.exe	32
PID 2400 wrote to memory of 2124	2400	gunzipped.exe	33
PID 2400 wrote to memory of 2124	2400	gunzipped.exe	33
PID 2400 wrote to memory of 2124	2400	gunzipped.exe	33
PID 2400 wrote to memory of 2124	2400	gunzipped.exe	33
PID 2400 wrote to memory of 2052	2400	gunzipped.exe	36
PID 2400 wrote to memory of 2052	2400	gunzipped.exe	36
PID 2400 wrote to memory of 2052	2400	gunzipped.exe	36
PID 2400 wrote to memory of 2052	2400	gunzipped.exe	36
PID 2400 wrote to memory of 2052	2400	gunzipped.exe	36
PID 2400 wrote to memory of 2052	2400	gunzipped.exe	36
PID 2400 wrote to memory of 2052	2400	gunzipped.exe	36
PID 2400 wrote to memory of 2052	2400	gunzipped.exe	36
PID 2400 wrote to memory of 2052	2400	gunzipped.exe	36
PID 2052 wrote to memory of 2496	2052	gunzipped.exe	37
PID 2052 wrote to memory of 2496	2052	gunzipped.exe	37
PID 2052 wrote to memory of 2496	2052	gunzipped.exe	37
PID 2052 wrote to memory of 2496	2052	gunzipped.exe	37
PID 2052 wrote to memory of 2620	2052	gunzipped.exe	39
PID 2052 wrote to memory of 2620	2052	gunzipped.exe	39
PID 2052 wrote to memory of 2620	2052	gunzipped.exe	39
PID 2052 wrote to memory of 2620	2052	gunzipped.exe	39

C:\Users\Admin\AppData\Local\Temp\gunzipped.exe
"C:\Users\Admin\AppData\Local\Temp\gunzipped.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2400
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\gunzipped.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1896
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\NAytADOHXq.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1540
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\NAytADOHXq" /XML "C:\Users\Admin\AppData\Local\Temp\tmp12E5.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:2124
- C:\Users\Admin\AppData\Local\Temp\gunzipped.exe
  "C:\Users\Admin\AppData\Local\Temp\gunzipped.exe"
  2⤵
  - Adds Run key to start application
  - Checks whether UAC is enabled
  - Drops file in Program Files directory
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2052
- - C:\Windows\SysWOW64\schtasks.exe
    "schtasks.exe" /create /f /tn "ISS Host" /xml "C:\Users\Admin\AppData\Local\Temp\tmp1526.tmp"
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:2496
- - C:\Windows\SysWOW64\schtasks.exe
    "schtasks.exe" /create /f /tn "ISS Host Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp1575.tmp"
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:2620

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

tmp12E5.tmp

Path C:\Users\Admin\AppData\Local\Temp\tmp12E5.tmp
Size 1KB
SHA256 55db211a88119c53ac4232d0236dc1502412e1c783c19aaafe271ed783f66ae0
MD5 7d7343347ff152d940b200560eb2d342
SHA1 8249fc9e694367c7a44493d562a35f571a8d1e49
SHA512 44c3cc1f121d4450c149ff25efc91ed64e21c90b61a4524778f24c8c1c11be052a10249a625b90b1c5e3bee894505598c4cb31cb79f11f074ec2d94f2702aa8c
MD5 SHA1 SHA512

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tmp1526.tmp

Path C:\Users\Admin\AppData\Local\Temp\tmp1526.tmp
Size 1KB
SHA256 aac9dd0d2fd0398d7958c31af596794180e27ba287868cb762878fb470da3cc8
MD5 42f7159e831591530fb8cdd62d4650a6
SHA1 5d951d429a25957ca5fc3be282774f148e2f4f81
SHA512 8439116c6be44e4d1575ea62a7062951605d47af636eb9c292a7e671ebbeee23d14dbb0dae769e87a3ce11877bf41572f7e21a75a0015dbf9d3dfa8b8cc68bbc
MD5 SHA1 SHA512

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tmp1575.tmp

Path C:\Users\Admin\AppData\Local\Temp\tmp1575.tmp
Size 1KB
SHA256 6f40196c42a171f24a3e16edeca664cdc5a2f7c150d468255b0e14ab10a2b714
MD5 3d1580c0395f6de62659467f5b7f1acf
SHA1 8e73a3885896cecca7ff799a272fc9ddfe06ea96
SHA512 7637c0d9b03227dffcb00a68d97ddce60bfc40ca0f8a7a4bbd700ea56be6d570908511dea5cab9f609a7da2e558e5298c482fd1e330af085f9c52867d5a847ea
MD5 SHA1 SHA512

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d93f411851d7c929.customDestinations-ms

Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms
Size 7KB
SHA256 ea9dbe972a9a180510d31a553a2d21c94a7aec4110eeab590e7853dd719f23b9
MD5 de75a6cc91a5780947bd3e0a8ae1bb17
SHA1 2c2620a1b615b8ae914cef0bb0e4f00b8677df5d
SHA512 d41d7c0cf21b618a324fa48522f71f3134b1cb076b7f775b412a5f0fa2165936066e0907c76ad4f5784c90324b9aac5c7096aff8d0b57e0f25545d15bc090410
SSDEEP 96:8RSCw4rM80nqvsqvJCwoHPwPYRSCw4rM80nqvsEHyqvJCworpPwPD6DFZQHOM3MZ:My4rIUohy4rIAHnor66z4c715B
MD5 SHA1 SHA512 SSDEEP

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memory/2052-21-0x0000000000400000-0x0000000000438000-memory.dmp

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memory/2052-51-0x00000000012E0000-0x00000000012F0000-memory.dmp

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memory/2052-53-0x0000000004830000-0x000000000483E000-memory.dmp

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memory/2052-54-0x0000000005340000-0x000000000536E000-memory.dmp

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memory/2052-55-0x0000000004D70000-0x0000000004D84000-memory.dmp

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memory/2052-19-0x0000000000400000-0x0000000000438000-memory.dmp

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memory/2052-29-0x0000000000400000-0x0000000000438000-memory.dmp

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memory/2052-30-0x0000000000400000-0x0000000000438000-memory.dmp

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memory/2052-28-0x0000000000400000-0x0000000000438000-memory.dmp

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memory/2052-27-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

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memory/2052-25-0x0000000000400000-0x0000000000438000-memory.dmp

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memory/2052-23-0x0000000000400000-0x0000000000438000-memory.dmp

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memory/2052-46-0x0000000000EB0000-0x0000000000EBE000-memory.dmp

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memory/2052-47-0x00000000012A0000-0x00000000012B2000-memory.dmp

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memory/2052-48-0x00000000012B0000-0x00000000012BC000-memory.dmp

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memory/2052-49-0x00000000012C0000-0x00000000012CE000-memory.dmp

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memory/2052-39-0x0000000000620000-0x000000000062A000-memory.dmp

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memory/2052-40-0x0000000000800000-0x000000000081E000-memory.dmp

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memory/2052-41-0x0000000000B00000-0x0000000000B0A000-memory.dmp

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memory/2052-45-0x0000000000E40000-0x0000000000E5A000-memory.dmp

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memory/2052-44-0x0000000000E30000-0x0000000000E42000-memory.dmp

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memory/2052-52-0x0000000004820000-0x0000000004834000-memory.dmp

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memory/2052-50-0x00000000012D0000-0x00000000012E4000-memory.dmp

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memory/2400-5-0x0000000074E00000-0x00000000754EE000-memory.dmp

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memory/2400-1-0x00000000012F0000-0x00000000013AA000-memory.dmp

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memory/2400-2-0x0000000074E00000-0x00000000754EE000-memory.dmp

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memory/2400-31-0x0000000074E00000-0x00000000754EE000-memory.dmp

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memory/2400-0-0x0000000074E0E000-0x0000000074E0F000-memory.dmp

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memory/2400-3-0x0000000000210000-0x0000000000222000-memory.dmp

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memory/2400-4-0x0000000074E0E000-0x0000000074E0F000-memory.dmp

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memory/2400-6-0x0000000005050000-0x00000000050CA000-memory.dmp

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