nanocore | 70d856cfc4e27c7ca18c939fd13fb989a308c64c0cd78d5d6f07759cc355c3db

Analysis

max time kernel
96s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20230221-en
resource tags

arch:x64arch:x86image:win10v2004-20230221-enlocale:en-usos:windows10-2004-x64system
submitted
31/05/2023, 05:41

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General

Target
e89323dd0063fb87b2115af014bbaf94.exe
Size 1.1MB
Sample230531-gdfd2ade31
SHA256 70d856cfc4e27c7ca18c939fd13fb989a308c64c0cd78d5d6f07759cc355c3db
MD5 e89323dd0063fb87b2115af014bbaf94
SHA1 788e5fcae9e19827a9e2a3238cf17c50a737d948
SHA512 bd66ec1c94da96f51fc4487da13e77710ff0f1dade38859bdf3f86f3d42bb8dc4e955d79e29273d3b555c6773d8c98676bd9a0f670345fd9d7ee6782f13867aa
SSDEEP 24576:WkJLaVUH999a0EXC/swhOm5inc8NRLICAWVfjJGXQn+DxklRZ:BNBH9a0WImm5ic8TJlGAn+Fklb
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

nanocore evasion keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

jasonbourneblack.ddns.net:4032
127.0.0.1:4032

Mutex

540c4d56-ad4d-4ca4-9f9f-305dba1da640

Attributes

activate_away_mode
true
backup_connection_host
127.0.0.1
backup_dns_server
8.8.4.4
buffer_size
65535
build_time
2023-03-04T22:22:44.882758536Z
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
4032
default_group
Default
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
540c4d56-ad4d-4ca4-9f9f-305dba1da640
mutex_timeout
5000
prevent_system_sleep
false
primary_connection_host
jasonbourneblack.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

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\\natsvc.exe"	e89323dd0063fb87b2115af014bbaf94.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	e89323dd0063fb87b2115af014bbaf94.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4648 set thread context of 2892	4648	e89323dd0063fb87b2115af014bbaf94.exe	85

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\NAT Service\natsvc.exe	e89323dd0063fb87b2115af014bbaf94.exe
File opened for modification	C:\Program Files (x86)\NAT Service\natsvc.exe	e89323dd0063fb87b2115af014bbaf94.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
1040	schtasks.exe
3540	schtasks.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2892	e89323dd0063fb87b2115af014bbaf94.exe
2892	e89323dd0063fb87b2115af014bbaf94.exe
2892	e89323dd0063fb87b2115af014bbaf94.exe
2892	e89323dd0063fb87b2115af014bbaf94.exe
2892	e89323dd0063fb87b2115af014bbaf94.exe
2892	e89323dd0063fb87b2115af014bbaf94.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2892	e89323dd0063fb87b2115af014bbaf94.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2892	e89323dd0063fb87b2115af014bbaf94.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 4648 wrote to memory of 2892	4648	e89323dd0063fb87b2115af014bbaf94.exe	85
PID 4648 wrote to memory of 2892	4648	e89323dd0063fb87b2115af014bbaf94.exe	85
PID 4648 wrote to memory of 2892	4648	e89323dd0063fb87b2115af014bbaf94.exe	85
PID 4648 wrote to memory of 2892	4648	e89323dd0063fb87b2115af014bbaf94.exe	85
PID 4648 wrote to memory of 2892	4648	e89323dd0063fb87b2115af014bbaf94.exe	85
PID 4648 wrote to memory of 2892	4648	e89323dd0063fb87b2115af014bbaf94.exe	85
PID 4648 wrote to memory of 2892	4648	e89323dd0063fb87b2115af014bbaf94.exe	85
PID 4648 wrote to memory of 2892	4648	e89323dd0063fb87b2115af014bbaf94.exe	85
PID 2892 wrote to memory of 1040	2892	e89323dd0063fb87b2115af014bbaf94.exe	86
PID 2892 wrote to memory of 1040	2892	e89323dd0063fb87b2115af014bbaf94.exe	86
PID 2892 wrote to memory of 1040	2892	e89323dd0063fb87b2115af014bbaf94.exe	86
PID 2892 wrote to memory of 3540	2892	e89323dd0063fb87b2115af014bbaf94.exe	88
PID 2892 wrote to memory of 3540	2892	e89323dd0063fb87b2115af014bbaf94.exe	88
PID 2892 wrote to memory of 3540	2892	e89323dd0063fb87b2115af014bbaf94.exe	88

C:\Users\Admin\AppData\Local\Temp\e89323dd0063fb87b2115af014bbaf94.exe
"C:\Users\Admin\AppData\Local\Temp\e89323dd0063fb87b2115af014bbaf94.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4648
- C:\Users\Admin\AppData\Local\Temp\e89323dd0063fb87b2115af014bbaf94.exe
  "C:\Users\Admin\AppData\Local\Temp\e89323dd0063fb87b2115af014bbaf94.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:2892
- - C:\Windows\SysWOW64\schtasks.exe
    "schtasks.exe" /create /f /tn "NAT Service" /xml "C:\Users\Admin\AppData\Local\Temp\tmp3170.tmp"
    3⤵
    - Creates scheduled task(s)
    PID:1040
- - C:\Windows\SysWOW64\schtasks.exe
    "schtasks.exe" /create /f /tn "NAT Service Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp321D.tmp"
    3⤵
    - Creates scheduled task(s)
    PID:3540

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

e89323dd0063fb87b2115af014bbaf94.exe.log

Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\e89323dd0063fb87b2115af014bbaf94.exe.log
Size 1KB
SHA256 7667e538030e3f8ce2886e47a01af24cb0ea70528b1e821c5d8832c5076cb982
MD5 8ec831f3e3a3f77e4a7b9cd32b48384c
SHA1 d83f09fd87c5bd86e045873c231c14836e76a05c
SHA512 26bffa2406b66368bd412bf25869a792631455645992cdcade2dbc13a2e56fb546414a6a9223b94c96c38d89187add6678d4779a88b38b0c9e36be8527b213c3
MD5 SHA1 SHA512

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tmp3170.tmp

Path C:\Users\Admin\AppData\Local\Temp\tmp3170.tmp
Size 1KB
SHA256 dfee2586e6ce5b1ae4c099a02c37e1ee6eef8087bbfc8a049530057332ad8c00
MD5 7fd4bd4904eb1c1cc5dee6c2d6e7b1be
SHA1 c5a2aec4d7bb0bba9e2aa6b12cdb21f769ff00e6
SHA512 59eba271d3a44d6e0f1b8b8882ec792fb4d35e14f2cd96154cddcd70d098e5352aeef76f75bcf01456f2befd7d312f23c6c059b76f8f31712f619dcaba890eed
MD5 SHA1 SHA512

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tmp321D.tmp

Path C:\Users\Admin\AppData\Local\Temp\tmp321D.tmp
Size 1KB
SHA256 185deb301fb4155d92e158bad5a52722c63ae7399a5b9d3d875050d5389b933a
MD5 45cb9fac03bbbeb9a6e82b85eb3efbda
SHA1 4d6c00b68434d11f346ce844ccbc2ed7b7d4acff
SHA512 00713c53d7193660ba223a47fa46225cb6d870ea5ea794f703efc73e21e6e01b7283dac5be3d5280e553b922521e32bc7db591bf471bd7673a1a0b62b198073b
MD5 SHA1 SHA512

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memory/2892-140-0x0000000000400000-0x0000000000438000-memory.dmp

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memory/2892-155-0x00000000054F0000-0x0000000005500000-memory.dmp

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memory/2892-153-0x0000000006DE0000-0x0000000006E46000-memory.dmp

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memory/2892-143-0x00000000054F0000-0x0000000005500000-memory.dmp

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memory/4648-136-0x00000000053D0000-0x00000000053DA000-memory.dmp

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memory/4648-139-0x0000000005570000-0x0000000005580000-memory.dmp

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memory/4648-138-0x0000000005570000-0x0000000005580000-memory.dmp

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memory/4648-137-0x0000000005670000-0x000000000570C000-memory.dmp

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memory/4648-133-0x0000000000900000-0x0000000000A14000-memory.dmp

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memory/4648-135-0x00000000053F0000-0x0000000005482000-memory.dmp

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memory/4648-134-0x00000000059A0000-0x0000000005F44000-memory.dmp

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