nanocore | e1160ebcd74712803f5f28fd179885715d63b39a24766d787e63ef63976083aa

Analysis

max time kernel
146s
max time network
150s
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
9d8c3a5a6b55228d57f3d37b56c06f12.exe
Size 831KB
Sample230218-ktbbssbb61
SHA256 e1160ebcd74712803f5f28fd179885715d63b39a24766d787e63ef63976083aa
MD5 9d8c3a5a6b55228d57f3d37b56c06f12
SHA1 1b6607cf23d71d7f76650c67af4800f9fbac41d6
SHA512 c2b54c8857872d3f6267d1d616c47dd3bd214ec17ff68b6b8f827fc91472f44aa4482e6c48aa4fe0a04ccc2cca056d10a01feb06ada43fab5a22a9ea4dc53e81
SSDEEP 24576:70qDSugAZ6f+3OnC55ghR+SPglcAoOOq:N6f+SCrg3glL
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
PD94bWwgdmVyc2lvbj0iMS4wIiBlbmNvZGluZz0iVVRGLTE2Ij8+DQo8VGFzayB2ZXJzaW9uPSIxLjIiIHhtbG5zPSJodHRwOi8vc2NoZW1hcy5taWNyb3NvZnQuY29tL3dpbmRvd3MvMjAwNC8wMi9taXQvdGFzayI+DQogIDxSZWdpc3RyYXRpb25JbmZvIC8+DQogIDxUcmlnZ2VycyAvPg0KICA8UHJpbmNpcGFscz4NCiAgICA8UHJpbmNpcGFsIGlkPSJBdXRob3IiPg0KICAgICAgPExvZ29uVHlwZT5JbnRlcmFjdGl2ZVRva2VuPC9Mb2dvblR5cGU+DQogICAgICA8UnVuTGV2ZWw+SGlnaGVzdEF2YWlsYWJsZTwvUnVuTGV2ZWw+DQogICAgPC9QcmluY2lwYWw+DQogIDwvUHJpbmNpcGFscz4NCiAgPFNldHRpbmdzPg0KICAgIDxNdWx0aXBsZUluc3RhbmNlc1BvbGljeT5QYXJhbGxlbDwvTXVsdGlwbGVJbnN0YW5jZXNQb2xpY3k+DQogICAgPERpc2FsbG93U3RhcnRJZk9uQmF0dGVyaWVzPmZhbHNlPC9EaXNhbGxvd1N0YXJ0SWZPbkJhdHRlcmllcz4NCiAgICA8U3RvcElmR29pbmdPbkJhdHRlcmllcz5mYWxzZTwvU3RvcElmR29pbmdPbkJhdHRlcmllcz4NCiAgICA8QWxsb3dIYXJkVGVybWluYXRlPnRydWU8L0FsbG93SGFyZFRlcm1pbmF0ZT4NCiAgICA8U3RhcnRXaGVuQXZhaWxhYmxlPmZhbHNlPC9TdGFydFdoZW5BdmFpbGFibGU+DQogICAgPFJ1bk9ubHlJZk5ldHdvcmtBdmFpbGFibGU+ZmFsc2U8L1J1bk9ubHlJZk5ldHdvcmtBdmFpbGFibGU+DQogICAgPElkbGVTZXR0aW5ncz4NCiAgICAgIDxTdG9wT25JZGxlRW5kPmZhbHNlPC9TdG9wT25JZGxlRW5kPg0KICAgICAgPFJlc3RhcnRPbklkbGU+ZmFsc2U8L1Jlc3RhcnRPbklkbGU+DQogICAgPC9JZGxlU2V0dGluZ3M+DQogICAgPEFsbG93U3RhcnRPbkRlbWFuZD50cnVlPC9BbGxvd1N0YXJ0T25EZW1hbmQ+DQogICAgPEVuYWJsZWQ+dHJ1ZTwvRW5hYmxlZD4NCiAgICA8SGlkZGVuPmZhbHNlPC9IaWRkZW4+DQogICAgPFJ1bk9ubHlJZklkbGU+ZmFsc2U8L1J1bk9ubHlJZklkbGU+DQogICAgPFdha2VUb1J1bj5mYWxzZTwvV2FrZVRvUnVuPg0KICAgIDxFeGVjdXRpb25UaW1lTGltaXQ+UFQwUzwvRXhlY3V0aW9uVGltZUxpbWl0Pg0KICAgIDxQcmlvcml0eT40PC9Qcmlvcml0eT4NCiAgPC9TZXR0aW5ncz4NCiAgPEFjdGlvbnMgQ29udGV4dD0iQXV0aG9yIj4NCiAgICA8RXhlYz4NCiAgICAgIDxDb21tYW5kPiIjRVhFQ1VUQUJMRVBBVEgiPC9Db21tYW5kPg0KICAgICAgPEFyZ3VtZW50cz4kKEFyZzApPC9Bcmd1bWVudHM+DQogICAgPC9FeGVjPg0KICA8L0FjdGlvbnM+DQo8L1Rhc2s+
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"	9d8c3a5a6b55228d57f3d37b56c06f12.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	9d8c3a5a6b55228d57f3d37b56c06f12.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3284 set thread context of 3104	3284	9d8c3a5a6b55228d57f3d37b56c06f12.exe	88

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\DHCP Subsystem\dhcpss.exe	9d8c3a5a6b55228d57f3d37b56c06f12.exe
File opened for modification	C:\Program Files (x86)\DHCP Subsystem\dhcpss.exe	9d8c3a5a6b55228d57f3d37b56c06f12.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
2852	schtasks.exe
1040	schtasks.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
3104	9d8c3a5a6b55228d57f3d37b56c06f12.exe
3104	9d8c3a5a6b55228d57f3d37b56c06f12.exe
3104	9d8c3a5a6b55228d57f3d37b56c06f12.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3104	9d8c3a5a6b55228d57f3d37b56c06f12.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3104	9d8c3a5a6b55228d57f3d37b56c06f12.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 3284 wrote to memory of 3104	3284	9d8c3a5a6b55228d57f3d37b56c06f12.exe	88
PID 3284 wrote to memory of 3104	3284	9d8c3a5a6b55228d57f3d37b56c06f12.exe	88
PID 3284 wrote to memory of 3104	3284	9d8c3a5a6b55228d57f3d37b56c06f12.exe	88
PID 3284 wrote to memory of 3104	3284	9d8c3a5a6b55228d57f3d37b56c06f12.exe	88
PID 3284 wrote to memory of 3104	3284	9d8c3a5a6b55228d57f3d37b56c06f12.exe	88
PID 3284 wrote to memory of 3104	3284	9d8c3a5a6b55228d57f3d37b56c06f12.exe	88
PID 3284 wrote to memory of 3104	3284	9d8c3a5a6b55228d57f3d37b56c06f12.exe	88
PID 3284 wrote to memory of 3104	3284	9d8c3a5a6b55228d57f3d37b56c06f12.exe	88
PID 3104 wrote to memory of 2852	3104	9d8c3a5a6b55228d57f3d37b56c06f12.exe	89
PID 3104 wrote to memory of 2852	3104	9d8c3a5a6b55228d57f3d37b56c06f12.exe	89
PID 3104 wrote to memory of 2852	3104	9d8c3a5a6b55228d57f3d37b56c06f12.exe	89
PID 3104 wrote to memory of 1040	3104	9d8c3a5a6b55228d57f3d37b56c06f12.exe	91
PID 3104 wrote to memory of 1040	3104	9d8c3a5a6b55228d57f3d37b56c06f12.exe	91
PID 3104 wrote to memory of 1040	3104	9d8c3a5a6b55228d57f3d37b56c06f12.exe	91

C:\Users\Admin\AppData\Local\Temp\9d8c3a5a6b55228d57f3d37b56c06f12.exe
"C:\Users\Admin\AppData\Local\Temp\9d8c3a5a6b55228d57f3d37b56c06f12.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3284
- C:\Users\Admin\AppData\Local\Temp\9d8c3a5a6b55228d57f3d37b56c06f12.exe
  "C:\Users\Admin\AppData\Local\Temp\9d8c3a5a6b55228d57f3d37b56c06f12.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:3104
- - C:\Windows\SysWOW64\schtasks.exe
    "schtasks.exe" /create /f /tn "DHCP Subsystem" /xml "C:\Users\Admin\AppData\Local\Temp\tmp4343.tmp"
    3⤵
    - Creates scheduled task(s)
    PID:2852
- - C:\Windows\SysWOW64\schtasks.exe
    "schtasks.exe" /create /f /tn "DHCP Subsystem Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp441E.tmp"
    3⤵
    - Creates scheduled task(s)
    PID:1040

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

Replay Monitor

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Downloads

9d8c3a5a6b55228d57f3d37b56c06f12.exe.log

Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\9d8c3a5a6b55228d57f3d37b56c06f12.exe.log
Size 1KB
SHA256 7667e538030e3f8ce2886e47a01af24cb0ea70528b1e821c5d8832c5076cb982
MD5 8ec831f3e3a3f77e4a7b9cd32b48384c
SHA1 d83f09fd87c5bd86e045873c231c14836e76a05c
SHA512 26bffa2406b66368bd412bf25869a792631455645992cdcade2dbc13a2e56fb546414a6a9223b94c96c38d89187add6678d4779a88b38b0c9e36be8527b213c3
MD5 SHA1 SHA512

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tmp4343.tmp

Path C:\Users\Admin\AppData\Local\Temp\tmp4343.tmp
Size 1KB
SHA256 193ba341124b43d9f780889e7d5834a2ba40a11a74e0238628e236962db6da77
MD5 44e568902a4a0225a7e2081c2e086cf1
SHA1 bcda8d8699a23320171df89c8d8a1b0538fc903f
SHA512 b1ae5c3419869b9e4af437489d80891df4360cc2e81b472959bc5eaec667efdef005d8c9a5b65a8fa65a99775a48f1bc9608e3d7248f320b4041fb612224fdd6
MD5 SHA1 SHA512

Submit Download

tmp441E.tmp

Path C:\Users\Admin\AppData\Local\Temp\tmp441E.tmp
Size 1KB
SHA256 99a158463ce40c750bad6991ae1fceece305a0dbf8e209dd7147b5d539756bfa
MD5 2f26d92c1eeead3896820e56ec46f6f1
SHA1 d95533b61eed7d89e4ada56bc566d60e42ac1f61
SHA512 6c1ed12d5e1afcd9e7f327e0153786fd8594f75a995f341c408ef014e69917452a9fe99c511f0249aceb57b3045b707f1fd3f404e4086cfbf0aadcb3318db892
MD5 SHA1 SHA512

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memory/3104-138-0x0000000000400000-0x0000000000438000-memory.dmp

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memory/3284-132-0x0000000000E90000-0x0000000000F66000-memory.dmp

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memory/3284-133-0x0000000005F20000-0x00000000064C4000-memory.dmp

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memory/3284-134-0x0000000005970000-0x0000000005A02000-memory.dmp

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memory/3284-135-0x0000000005910000-0x000000000591A000-memory.dmp

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memory/3284-136-0x00000000082D0000-0x000000000836C000-memory.dmp

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