nanocore | a31358e9f59219cfa5f1acbc680eab9f56aa3fd9975fc73537768d9f43fb6abc

Analysis

max time kernel
85s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20230221-en
resource tags

arch:x64arch:x86image:win10v2004-20230221-enlocale:en-usos:windows10-2004-x64system
submitted
11/05/2023, 17:35

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General

Target
1b265ad921a486805c323330aeafdd21.exe
Size 644KB
Sample230511-v52y1abb4t
SHA256 a31358e9f59219cfa5f1acbc680eab9f56aa3fd9975fc73537768d9f43fb6abc
MD5 1b265ad921a486805c323330aeafdd21
SHA1 0c693d648cdb8a788b5223d6b23a5ce2eff671de
SHA512 e33601b2c7b0c4f8cbe258c21c27f024d29309e2974c3f36a3aca2730db59cd0e9933dc8ea882a761e73c5e35247fdd55cf60d96218394066823775b26e4e5fa
SSDEEP 12288:OqU2m0wteOxDci6SlV3PKhAbtBqITDtYNWJmQf7:I2mFT6G0Gfy80M
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
141.98.6.167:4032

Mutex

7f1dfa1d-d6c0-4020-9f5c-a4187508663d

Attributes

activate_away_mode
true
backup_connection_host
141.98.6.167
backup_dns_server
8.8.4.4
buffer_size
65535
build_time
2023-02-17T11:21:37.252767036Z
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
7f1dfa1d-d6c0-4020-9f5c-a4187508663d
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"	1b265ad921a486805c323330aeafdd21.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	1b265ad921a486805c323330aeafdd21.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3280 set thread context of 2136	3280	1b265ad921a486805c323330aeafdd21.exe	84

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\NAT Service\natsvc.exe	1b265ad921a486805c323330aeafdd21.exe
File opened for modification	C:\Program Files (x86)\NAT Service\natsvc.exe	1b265ad921a486805c323330aeafdd21.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
3856	schtasks.exe
432	schtasks.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2136	1b265ad921a486805c323330aeafdd21.exe
2136	1b265ad921a486805c323330aeafdd21.exe
2136	1b265ad921a486805c323330aeafdd21.exe
2136	1b265ad921a486805c323330aeafdd21.exe
2136	1b265ad921a486805c323330aeafdd21.exe
2136	1b265ad921a486805c323330aeafdd21.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2136	1b265ad921a486805c323330aeafdd21.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2136	1b265ad921a486805c323330aeafdd21.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 3280 wrote to memory of 2136	3280	1b265ad921a486805c323330aeafdd21.exe	84
PID 3280 wrote to memory of 2136	3280	1b265ad921a486805c323330aeafdd21.exe	84
PID 3280 wrote to memory of 2136	3280	1b265ad921a486805c323330aeafdd21.exe	84
PID 3280 wrote to memory of 2136	3280	1b265ad921a486805c323330aeafdd21.exe	84
PID 3280 wrote to memory of 2136	3280	1b265ad921a486805c323330aeafdd21.exe	84
PID 3280 wrote to memory of 2136	3280	1b265ad921a486805c323330aeafdd21.exe	84
PID 3280 wrote to memory of 2136	3280	1b265ad921a486805c323330aeafdd21.exe	84
PID 3280 wrote to memory of 2136	3280	1b265ad921a486805c323330aeafdd21.exe	84
PID 2136 wrote to memory of 3856	2136	1b265ad921a486805c323330aeafdd21.exe	85
PID 2136 wrote to memory of 3856	2136	1b265ad921a486805c323330aeafdd21.exe	85
PID 2136 wrote to memory of 3856	2136	1b265ad921a486805c323330aeafdd21.exe	85
PID 2136 wrote to memory of 432	2136	1b265ad921a486805c323330aeafdd21.exe	87
PID 2136 wrote to memory of 432	2136	1b265ad921a486805c323330aeafdd21.exe	87
PID 2136 wrote to memory of 432	2136	1b265ad921a486805c323330aeafdd21.exe	87

C:\Users\Admin\AppData\Local\Temp\1b265ad921a486805c323330aeafdd21.exe
"C:\Users\Admin\AppData\Local\Temp\1b265ad921a486805c323330aeafdd21.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3280
- C:\Users\Admin\AppData\Local\Temp\1b265ad921a486805c323330aeafdd21.exe
  "C:\Users\Admin\AppData\Local\Temp\1b265ad921a486805c323330aeafdd21.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:2136
- - C:\Windows\SysWOW64\schtasks.exe
    "schtasks.exe" /create /f /tn "NAT Service" /xml "C:\Users\Admin\AppData\Local\Temp\tmp5208.tmp"
    3⤵
    - Creates scheduled task(s)
    PID:3856
- - C:\Windows\SysWOW64\schtasks.exe
    "schtasks.exe" /create /f /tn "NAT Service Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp52D4.tmp"
    3⤵
    - Creates scheduled task(s)
    PID:432

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

1b265ad921a486805c323330aeafdd21.exe.log

Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\1b265ad921a486805c323330aeafdd21.exe.log
Size 1KB
SHA256 7667e538030e3f8ce2886e47a01af24cb0ea70528b1e821c5d8832c5076cb982
MD5 8ec831f3e3a3f77e4a7b9cd32b48384c
SHA1 d83f09fd87c5bd86e045873c231c14836e76a05c
SHA512 26bffa2406b66368bd412bf25869a792631455645992cdcade2dbc13a2e56fb546414a6a9223b94c96c38d89187add6678d4779a88b38b0c9e36be8527b213c3
MD5 SHA1 SHA512

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tmp5208.tmp

Path C:\Users\Admin\AppData\Local\Temp\tmp5208.tmp
Size 1KB
SHA256 dbb004f6bf0d73a9a2e8ff1fe9b9329f0df67ee2f03744f083766481d85206a7
MD5 b44de702df8d9ce475c34549a9c11a96
SHA1 834e5d3ce76951173fc26807092f0833d628bb70
SHA512 17f379861bc84610301222ca3c76dbdb77669fc8c443e160b93ddf405f83af4409f127ece82c74e8170ddf64259d3a79f9abc9f469a6cca9cadf4cefd8d479f7
MD5 SHA1 SHA512

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tmp52D4.tmp

Path C:\Users\Admin\AppData\Local\Temp\tmp52D4.tmp
Size 1KB
SHA256 185deb301fb4155d92e158bad5a52722c63ae7399a5b9d3d875050d5389b933a
MD5 45cb9fac03bbbeb9a6e82b85eb3efbda
SHA1 4d6c00b68434d11f346ce844ccbc2ed7b7d4acff
SHA512 00713c53d7193660ba223a47fa46225cb6d870ea5ea794f703efc73e21e6e01b7283dac5be3d5280e553b922521e32bc7db591bf471bd7673a1a0b62b198073b
MD5 SHA1 SHA512

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memory/2136-140-0x0000000000400000-0x0000000000438000-memory.dmp

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memory/2136-155-0x0000000005830000-0x0000000005840000-memory.dmp

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memory/2136-153-0x0000000007250000-0x00000000072B6000-memory.dmp

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memory/2136-150-0x0000000005830000-0x0000000005840000-memory.dmp

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memory/3280-136-0x0000000004FB0000-0x0000000004FBA000-memory.dmp

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memory/3280-139-0x0000000007EB0000-0x0000000007F4C000-memory.dmp

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memory/3280-138-0x0000000005080000-0x0000000005090000-memory.dmp

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memory/3280-137-0x0000000005080000-0x0000000005090000-memory.dmp

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memory/3280-133-0x00000000004B0000-0x0000000000558000-memory.dmp

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memory/3280-135-0x0000000004F00000-0x0000000004F92000-memory.dmp

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memory/3280-134-0x00000000055B0000-0x0000000005B54000-memory.dmp

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