nanocore | 4f7da7d6fb331a8098d4ce354690ffc64d8f0225307b406e722548109e669d4d

Analysis

max time kernel
163s
max time network
163s
platform
windows10_x64
resource
win10-en-20211208
submitted
29/12/2021, 01:23

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General

Target
EqSsNFlnik2KxfG.exe
Size 510KB
Sample211229-brtkxschfp
SHA256 4f7da7d6fb331a8098d4ce354690ffc64d8f0225307b406e722548109e669d4d
MD5 f29ba9f179fb2eed153f8f2a746e830f
SHA1 dd6b68aa68999db37c8d8d97d057fbefc761c26f
SHA512 1e35a85fe1b8d57a186661b41cf72e69ff72492306e1149b044e12e8611243d449d17fc92cb72ff7fbde9c472b01ee52960d19b00e08d133838e5c3b7766ff48
MD5 SHA1 SHA512

Score

10^/10

nanocore keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

strongodss.ddns.net:50421
185.19.85.175:50421

Mutex

ce7fbdd9-3c95-435d-8876-f66955192db5

Attributes

activate_away_mode
false
backup_connection_host
185.19.85.175
backup_dns_server
buffer_size
65538
build_time
2021-08-28T22:24:44.804652736Z
bypass_user_account_control
false
bypass_user_account_control_data
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
clear_access_control
false
clear_zone_identifier
false
connect_delay
4000
connection_port
50421
default_group
0SPEED
enable_debug_mode
true
gc_threshold
1.0485772e+07
keep_alive_timeout
30000
keyboard_logging
false
lan_timeout
2500
max_packet_size
1.0485772e+07
mutex
ce7fbdd9-3c95-435d-8876-f66955192db5
mutex_timeout
5000
prevent_system_sleep
false
primary_connection_host
strongodss.ddns.net
primary_dns_server
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
8009

Signatures

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

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\NAT Service = "C:\\Program Files (x86)\\NAT Service\\natsv.exe"	RegSvcs.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3312 set thread context of 364	3312	EqSsNFlnik2KxfG.exe	73

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\NAT Service\natsv.exe	RegSvcs.exe
File opened for modification	C:\Program Files (x86)\NAT Service\natsv.exe	RegSvcs.exe

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

System Information Discovery
T1082

Creates scheduled task(s) 1 TTPs 3 IoCs

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

persistence

Scheduled Task

T1053

pid	Process
1956	schtasks.exe
2952	schtasks.exe
700	schtasks.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
364	RegSvcs.exe
364	RegSvcs.exe
364	RegSvcs.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
364	RegSvcs.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	364	RegSvcs.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 3312 wrote to memory of 2952	3312	EqSsNFlnik2KxfG.exe	71
PID 3312 wrote to memory of 2952	3312	EqSsNFlnik2KxfG.exe	71
PID 3312 wrote to memory of 2952	3312	EqSsNFlnik2KxfG.exe	71
PID 3312 wrote to memory of 364	3312	EqSsNFlnik2KxfG.exe	73
PID 3312 wrote to memory of 364	3312	EqSsNFlnik2KxfG.exe	73
PID 3312 wrote to memory of 364	3312	EqSsNFlnik2KxfG.exe	73
PID 3312 wrote to memory of 364	3312	EqSsNFlnik2KxfG.exe	73
PID 3312 wrote to memory of 364	3312	EqSsNFlnik2KxfG.exe	73
PID 3312 wrote to memory of 364	3312	EqSsNFlnik2KxfG.exe	73
PID 3312 wrote to memory of 364	3312	EqSsNFlnik2KxfG.exe	73
PID 3312 wrote to memory of 364	3312	EqSsNFlnik2KxfG.exe	73
PID 364 wrote to memory of 700	364	RegSvcs.exe	74
PID 364 wrote to memory of 700	364	RegSvcs.exe	74
PID 364 wrote to memory of 700	364	RegSvcs.exe	74
PID 364 wrote to memory of 1956	364	RegSvcs.exe	76
PID 364 wrote to memory of 1956	364	RegSvcs.exe	76
PID 364 wrote to memory of 1956	364	RegSvcs.exe	76

C:\Users\Admin\AppData\Local\Temp\EqSsNFlnik2KxfG.exe
"C:\Users\Admin\AppData\Local\Temp\EqSsNFlnik2KxfG.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3312
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\CdOaSHNIiym" /XML "C:\Users\Admin\AppData\Local\Temp\tmpFA2B.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:2952
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
  "{path}"
  2⤵
  - Adds Run key to start application
  - Drops file in Program Files directory
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:364
- - C:\Windows\SysWOW64\schtasks.exe
    "schtasks.exe" /create /f /tn "NAT Service" /xml "C:\Users\Admin\AppData\Local\Temp\tmp40E.tmp"
    3⤵
    - Creates scheduled task(s)
    PID:700
- - C:\Windows\SysWOW64\schtasks.exe
    "schtasks.exe" /create /f /tn "NAT Service Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp47C.tmp"
    3⤵
    - Creates scheduled task(s)
    PID:1956

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

T1053

Persistence

Registry Run Keys / Startup Folder

T1060

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/364-135-0x0000000004FD0000-0x0000000004FDA000-memory.dmp

Download

memory/364-130-0x0000000000400000-0x000000000043A000-memory.dmp

Download

memory/364-141-0x00000000050F0000-0x00000000050FA000-memory.dmp

Download

memory/364-144-0x0000000006270000-0x000000000627A000-memory.dmp

Download

memory/364-139-0x0000000004F50000-0x0000000004FE2000-memory.dmp

Download

memory/364-145-0x0000000004F50000-0x0000000004FE2000-memory.dmp

Download

memory/364-133-0x0000000004FF0000-0x0000000005082000-memory.dmp

Download

memory/364-143-0x0000000005610000-0x000000000562E000-memory.dmp

Download

memory/364-142-0x0000000005100000-0x000000000510C000-memory.dmp

Download

memory/364-132-0x0000000005630000-0x0000000005B2E000-memory.dmp

Download

memory/364-128-0x0000000000400000-0x000000000043A000-memory.dmp

Download

memory/364-134-0x0000000005130000-0x00000000051CC000-memory.dmp

Download

memory/364-131-0x0000000000400000-0x000000000043A000-memory.dmp

Download

memory/3312-122-0x00000000056F0000-0x0000000005746000-memory.dmp

Download

memory/3312-115-0x00000000009C0000-0x0000000000A46000-memory.dmp

Download

memory/3312-123-0x00000000055D0000-0x00000000055DA000-memory.dmp

Download

memory/3312-124-0x0000000007D30000-0x0000000007DBE000-memory.dmp

Download

memory/3312-125-0x000000000A2D0000-0x000000000A30A000-memory.dmp

Download

memory/3312-121-0x0000000005440000-0x000000000544A000-memory.dmp

Download

memory/3312-120-0x0000000005420000-0x000000000591E000-memory.dmp

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memory/3312-119-0x00000000054C0000-0x0000000005552000-memory.dmp

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memory/3312-118-0x0000000005920000-0x0000000005E1E000-memory.dmp

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memory/3312-117-0x0000000005380000-0x000000000541C000-memory.dmp

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memory/3312-116-0x00000000009C0000-0x0000000000A46000-memory.dmp

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