nanocore | fe5177bffbd98100bece2b8e96344b26a7c39b33dc919c6841b0f95e802e0438

Analysis

max time kernel
91s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20220901-en
resource tags

arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
submitted
18/02/2023, 08:53

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General

Target
7d3cb083ed0a645e0b251f5629563da9.exe
Size 742KB
Sample230218-ktbbssbb6x
SHA256 fe5177bffbd98100bece2b8e96344b26a7c39b33dc919c6841b0f95e802e0438
MD5 7d3cb083ed0a645e0b251f5629563da9
SHA1 ebe9a4c7cc10453b3afaada802104fcdedc3739b
SHA512 7f461aa73c28949993cde729528df273a05f5e5e514a4f3a62fe400ec1ab08933403f5fffc7f1b1e2e882fc0910850010ccf4fcef77caff0e5e56df99ec4afe6
SSDEEP 12288:6qzGPmNJXYiH2nM79xn6+dkgUdaRElQs/HaSML643OU++LmDJymqDSugDs+9t:/8iWnMnddkgUdaCQs/tV7VDJymqDSu
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

nanocore evasion keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

favgrandson7.sytes.net:6696
127.0.0.1:6696

Mutex

cb8b3819-b374-4932-8b1b-2c19c1da9851

Attributes

activate_away_mode
true
backup_connection_host
127.0.0.1
backup_dns_server
8.8.4.4
buffer_size
65535
build_time
2022-11-25T08:34:00.714996536Z
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
6696
default_group
FEB13
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
cb8b3819-b374-4932-8b1b-2c19c1da9851
mutex_timeout
5000
prevent_system_sleep
false
primary_connection_host
favgrandson7.sytes.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

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\DHCP Subsystem = "C:\\Program Files (x86)\\DHCP Subsystem\\dhcpss.exe"	7d3cb083ed0a645e0b251f5629563da9.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	7d3cb083ed0a645e0b251f5629563da9.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2952 set thread context of 3520	2952	7d3cb083ed0a645e0b251f5629563da9.exe	89

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\DHCP Subsystem\dhcpss.exe	7d3cb083ed0a645e0b251f5629563da9.exe
File opened for modification	C:\Program Files (x86)\DHCP Subsystem\dhcpss.exe	7d3cb083ed0a645e0b251f5629563da9.exe

Creates scheduled task(s) 1 TTPs 2 IoCs

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

persistence

Scheduled Task

T1053

pid	Process
1604	schtasks.exe
1512	schtasks.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
3520	7d3cb083ed0a645e0b251f5629563da9.exe
3520	7d3cb083ed0a645e0b251f5629563da9.exe
3520	7d3cb083ed0a645e0b251f5629563da9.exe
3520	7d3cb083ed0a645e0b251f5629563da9.exe
3520	7d3cb083ed0a645e0b251f5629563da9.exe
3520	7d3cb083ed0a645e0b251f5629563da9.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3520	7d3cb083ed0a645e0b251f5629563da9.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3520	7d3cb083ed0a645e0b251f5629563da9.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 2952 wrote to memory of 3520	2952	7d3cb083ed0a645e0b251f5629563da9.exe	89
PID 2952 wrote to memory of 3520	2952	7d3cb083ed0a645e0b251f5629563da9.exe	89
PID 2952 wrote to memory of 3520	2952	7d3cb083ed0a645e0b251f5629563da9.exe	89
PID 2952 wrote to memory of 3520	2952	7d3cb083ed0a645e0b251f5629563da9.exe	89
PID 2952 wrote to memory of 3520	2952	7d3cb083ed0a645e0b251f5629563da9.exe	89
PID 2952 wrote to memory of 3520	2952	7d3cb083ed0a645e0b251f5629563da9.exe	89
PID 2952 wrote to memory of 3520	2952	7d3cb083ed0a645e0b251f5629563da9.exe	89
PID 2952 wrote to memory of 3520	2952	7d3cb083ed0a645e0b251f5629563da9.exe	89
PID 3520 wrote to memory of 1604	3520	7d3cb083ed0a645e0b251f5629563da9.exe	90
PID 3520 wrote to memory of 1604	3520	7d3cb083ed0a645e0b251f5629563da9.exe	90
PID 3520 wrote to memory of 1604	3520	7d3cb083ed0a645e0b251f5629563da9.exe	90
PID 3520 wrote to memory of 1512	3520	7d3cb083ed0a645e0b251f5629563da9.exe	92
PID 3520 wrote to memory of 1512	3520	7d3cb083ed0a645e0b251f5629563da9.exe	92
PID 3520 wrote to memory of 1512	3520	7d3cb083ed0a645e0b251f5629563da9.exe	92

C:\Users\Admin\AppData\Local\Temp\7d3cb083ed0a645e0b251f5629563da9.exe
"C:\Users\Admin\AppData\Local\Temp\7d3cb083ed0a645e0b251f5629563da9.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2952
- C:\Users\Admin\AppData\Local\Temp\7d3cb083ed0a645e0b251f5629563da9.exe
  "C:\Users\Admin\AppData\Local\Temp\7d3cb083ed0a645e0b251f5629563da9.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
  - Suspicious use of WriteProcessMemory
  PID:3520
- - C:\Windows\SysWOW64\schtasks.exe
    "schtasks.exe" /create /f /tn "DHCP Subsystem" /xml "C:\Users\Admin\AppData\Local\Temp\tmp7F52.tmp"
    3⤵
    - Creates scheduled task(s)
    PID:1604
- - C:\Windows\SysWOW64\schtasks.exe
    "schtasks.exe" /create /f /tn "DHCP Subsystem Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp7FC0.tmp"
    3⤵
    - Creates scheduled task(s)
    PID:1512

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

7d3cb083ed0a645e0b251f5629563da9.exe.log

Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\7d3cb083ed0a645e0b251f5629563da9.exe.log
Size 1KB
SHA256 23e7ff51ebfcadfe4c1df5d09d314da0166d3b55a82d175603a95a319aa99fc8
MD5 374befbb55a7ee9f3cc90fc8f8e686cd
SHA1 97142f4181257ad66ca674561cada080167c69e6
SHA512 9afc348c189332bb712b8cf675054d375bcd1ad747aba72523f317bc9120f584adc4af176af9742cbc862b1269abcaa22249679d7b35bde51ae00e82682551d7
MD5 SHA1 SHA512

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tmp7F52.tmp

Path C:\Users\Admin\AppData\Local\Temp\tmp7F52.tmp
Size 1KB
SHA256 9f51eaed9263f5a9fec1020521bb5d10035b8bf99edab20a75386aa0897404c6
MD5 c2c4902ae8b38046ddd5859e31dba013
SHA1 f2c747c6def0cab007a3c343e3d9a1c94a652efb
SHA512 b0c54c8598af197057abb5acb6b3a38106401928810860e6b0bcd709be9f82aba97caf36ba41aaa1e14e59d73d6b943edabad831a9f1adb8bac330997338e674
MD5 SHA1 SHA512

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tmp7FC0.tmp

Path C:\Users\Admin\AppData\Local\Temp\tmp7FC0.tmp
Size 1KB
SHA256 99a158463ce40c750bad6991ae1fceece305a0dbf8e209dd7147b5d539756bfa
MD5 2f26d92c1eeead3896820e56ec46f6f1
SHA1 d95533b61eed7d89e4ada56bc566d60e42ac1f61
SHA512 6c1ed12d5e1afcd9e7f327e0153786fd8594f75a995f341c408ef014e69917452a9fe99c511f0249aceb57b3045b707f1fd3f404e4086cfbf0aadcb3318db892
MD5 SHA1 SHA512

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memory/2952-135-0x00000000058B0000-0x00000000058BA000-memory.dmp

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memory/2952-136-0x0000000009A80000-0x0000000009B1C000-memory.dmp

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memory/2952-132-0x0000000000E40000-0x0000000000F00000-memory.dmp

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memory/2952-134-0x00000000058F0000-0x0000000005982000-memory.dmp

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memory/2952-133-0x0000000005FD0000-0x0000000006574000-memory.dmp

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memory/3520-138-0x0000000000400000-0x0000000000438000-memory.dmp

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memory/3520-144-0x0000000007450000-0x00000000074B6000-memory.dmp

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