nanocore | c0ee259c92c30dcd710e13a44ec8899aa527998ab2431d1e4cb1de94db939718

General

Target

INV 6821202304080001.pdf.exe
Size

2.2MB
MD5

5544f709f499a2179dc8bfa0febef190
SHA1

bfe3a5b530af40d4a679f3a0f271a2c8fc3bebda
SHA256

c0ee259c92c30dcd710e13a44ec8899aa527998ab2431d1e4cb1de94db939718
SHA512

eec0b7c5a48667d2d429e7dfe3b1e5f21e9342c91b4d06915eb57b82b2a14ef1963ed9ba6baa12f0b9a61470fdbc4820faff613d5c057f6fb1c1de397fbcf867
SSDEEP

24576:bBPTrfgGiX5jCqC/twlR0egPHcKkZLKbarxflAGezUFj1ttCq63a7fUL3t6NxKmn:prwX5jHOODAZzojrtCGdXr

Score

10^/10

nanocore evasion keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

152.89.218.40:54984

127.0.0.1:54984

Mutex

18aadcbc-eacf-42f0-9f04-a9a6fe5a3fd3

Attributes

activate_away_mode
true
backup_connection_host
127.0.0.1
backup_dns_server
8.8.4.4
buffer_size
65535
build_time
2023-01-21T21:54:55.670767736Z
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
54984
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
18aadcbc-eacf-42f0-9f04-a9a6fe5a3fd3
mutex_timeout
5000
prevent_system_sleep
false
primary_connection_host
152.89.218.40
primary_dns_server
8.8.8.8
request_elevation
false
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

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1004

Modify Registry

T1112

Processes:

INV 6821202304080001.pdf.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,\"C:\\Users\\Admin\\AppData\\Roaming\\Lvxzuojt\\Titfeptt.exe\","	INV 6821202304080001.pdf.exe

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

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

INV 6821202304080001.pdf.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000\Control Panel\International\Geo\Nation	INV 6821202304080001.pdf.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

INV 6821202304080001.pdf.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\UPNP Host = "C:\\Program Files (x86)\\UPNP Host\\upnphost.exe"	INV 6821202304080001.pdf.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs

evasion trojan

System Information Discovery

T1082

Processes:

INV 6821202304080001.pdf.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	INV 6821202304080001.pdf.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

INV 6821202304080001.pdf.exe

description pid process target process

PID 2264 set thread context of 3424 2264 INV 6821202304080001.pdf.exe INV 6821202304080001.pdf.exe

description	pid	process	target process
PID 2264 set thread context of 3424	2264	INV 6821202304080001.pdf.exe	INV 6821202304080001.pdf.exe

Drops file in Program Files directory 2 IoCs

Processes:

INV 6821202304080001.pdf.exe

description	ioc	process
File created	C:\Program Files (x86)\UPNP Host\upnphost.exe	INV 6821202304080001.pdf.exe
File opened for modification	C:\Program Files (x86)\UPNP Host\upnphost.exe	INV 6821202304080001.pdf.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 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task
T1053

Processes:

schtasks.exeschtasks.exe

pid process

3964 schtasks.exe
3336 schtasks.exe

pid	process
3964	schtasks.exe
3336	schtasks.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

Processes:

powershell.exeINV 6821202304080001.pdf.exe

pid	process
4440	powershell.exe
4440	powershell.exe
3424	INV 6821202304080001.pdf.exe
3424	INV 6821202304080001.pdf.exe
3424	INV 6821202304080001.pdf.exe
3424	INV 6821202304080001.pdf.exe
3424	INV 6821202304080001.pdf.exe
3424	INV 6821202304080001.pdf.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

INV 6821202304080001.pdf.exe

pid process

3424 INV 6821202304080001.pdf.exe

pid	process
3424	INV 6821202304080001.pdf.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

powershell.exeINV 6821202304080001.pdf.exeINV 6821202304080001.pdf.exe

description	pid	process
Token: SeDebugPrivilege	4440	powershell.exe
Token: SeDebugPrivilege	2264	INV 6821202304080001.pdf.exe
Token: SeDebugPrivilege	3424	INV 6821202304080001.pdf.exe

Suspicious use of WriteProcessMemory 17 IoCs

Processes:

INV 6821202304080001.pdf.exeINV 6821202304080001.pdf.exe

description	pid	process	target process
PID 2264 wrote to memory of 4440	2264	INV 6821202304080001.pdf.exe	powershell.exe
PID 2264 wrote to memory of 4440	2264	INV 6821202304080001.pdf.exe	powershell.exe
PID 2264 wrote to memory of 4440	2264	INV 6821202304080001.pdf.exe	powershell.exe
PID 2264 wrote to memory of 3424	2264	INV 6821202304080001.pdf.exe	INV 6821202304080001.pdf.exe
PID 2264 wrote to memory of 3424	2264	INV 6821202304080001.pdf.exe	INV 6821202304080001.pdf.exe
PID 2264 wrote to memory of 3424	2264	INV 6821202304080001.pdf.exe	INV 6821202304080001.pdf.exe
PID 2264 wrote to memory of 3424	2264	INV 6821202304080001.pdf.exe	INV 6821202304080001.pdf.exe
PID 2264 wrote to memory of 3424	2264	INV 6821202304080001.pdf.exe	INV 6821202304080001.pdf.exe
PID 2264 wrote to memory of 3424	2264	INV 6821202304080001.pdf.exe	INV 6821202304080001.pdf.exe
PID 2264 wrote to memory of 3424	2264	INV 6821202304080001.pdf.exe	INV 6821202304080001.pdf.exe
PID 2264 wrote to memory of 3424	2264	INV 6821202304080001.pdf.exe	INV 6821202304080001.pdf.exe
PID 3424 wrote to memory of 3336	3424	INV 6821202304080001.pdf.exe	schtasks.exe
PID 3424 wrote to memory of 3336	3424	INV 6821202304080001.pdf.exe	schtasks.exe
PID 3424 wrote to memory of 3336	3424	INV 6821202304080001.pdf.exe	schtasks.exe
PID 3424 wrote to memory of 3964	3424	INV 6821202304080001.pdf.exe	schtasks.exe
PID 3424 wrote to memory of 3964	3424	INV 6821202304080001.pdf.exe	schtasks.exe
PID 3424 wrote to memory of 3964	3424	INV 6821202304080001.pdf.exe	schtasks.exe

C:\Users\Admin\AppData\Local\Temp\INV 6821202304080001.pdf.exe
"C:\Users\Admin\AppData\Local\Temp\INV 6821202304080001.pdf.exe"
1⤵
- Modifies WinLogon for persistence
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2264

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ENC cwB0AGEAcgB0AC0AcwBsAGUAZQBwACAALQBzAGUAYwBvAG4AZABzACAAMgAwAA==
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4440

C:\Users\Admin\AppData\Local\Temp\INV 6821202304080001.pdf.exe
"C:\Users\Admin\AppData\Local\Temp\INV 6821202304080001.pdf.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:3424

C:\Windows\SysWOW64\schtasks.exe
"schtasks.exe" /create /f /tn "UPNP Host" /xml "C:\Users\Admin\AppData\Local\Temp\tmpE350.tmp"
3⤵
- Creates scheduled task(s)
PID:3336

C:\Windows\SysWOW64\schtasks.exe
"schtasks.exe" /create /f /tn "UPNP Host Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmpE3FD.tmp"
3⤵
- Creates scheduled task(s)
PID:3964

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Winlogon Helper DLL

1

T1004

Registry Run Keys / Startup Folder

1

T1060

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Modify Registry

2

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

3

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\INV 6821202304080001.pdf.exe.log
Filesize
1KB

MD5
7e88081fcf716d85992bb3af3d9b6454

SHA1
2153780fbc71061b0102a7a7b665349e1013e250

SHA256
5ffb4a3ea94a6a53c4f88e2191c6fec5fd8a7336e367aa113fe8c12631e0c4d2

SHA512
ec606e14367ae221c04f213a61a6f797034495121198e4788e3afa4aa8db67bf59c5c5210a56afae5557158e8923b013b371b84c7d64303618c5b4c57a2224f7

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_3z5re2q5.d3b.ps1
Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpE350.tmp
Filesize
1KB

MD5
490434270100708c7e5bc87f98266ee4

SHA1
9c50d7394f5d0313824bb53dd9f5a1e2293c7689

SHA256
0523ff8b588e5e2c8fa48ebf4847508898dad71035efcff5e7b29081c1f58fab

SHA512
120464c62e463a8eb56e9ceea1b01df8fda3e5541b1e608fb265314f3a8aa64ed3966edf05dd8291ad5b06e99dc4e746afac70e7fb7549feca0b80152891d326

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpE3FD.tmp
Filesize
1KB

MD5
88bf0bc1e20b64333f39f1cf2085a729

SHA1
6d8eeef3d8f118ded3f2f1dc55ffaa71ee5d7ad8

SHA256
393c769644b1c640753a6bab46cd6c8cbaf984d116d6f7dd1a071d5f2afa42f9

SHA512
74dfacf7443b7b08da09d40bca1b2a99e7dc44d9d5289f86e1b718f3268b1b11e85c04eb8dd0a5e95788726f09678051a27902d509f015a5ff6609c7d8ec9aba

Download Submit
memory/2264-155-0x0000000003000000-0x0000000003010000-memory.dmp

Filesize
64KB

Download
memory/2264-134-0x0000000005AB0000-0x0000000005AD2000-memory.dmp

Filesize
136KB

Download
memory/2264-135-0x0000000003000000-0x0000000003010000-memory.dmp

Filesize
64KB

Download
memory/2264-133-0x0000000000B90000-0x0000000000DCE000-memory.dmp

Filesize
2.2MB

Download
memory/3424-163-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/3424-181-0x0000000005800000-0x0000000005810000-memory.dmp

Filesize
64KB

Download
memory/3424-176-0x0000000005800000-0x0000000005810000-memory.dmp

Filesize
64KB

Download
memory/3424-169-0x00000000055B0000-0x00000000055BA000-memory.dmp

Filesize
40KB

Download
memory/3424-168-0x00000000056A0000-0x000000000573C000-memory.dmp

Filesize
624KB

Download
memory/3424-167-0x00000000054F0000-0x0000000005582000-memory.dmp

Filesize
584KB

Download
memory/3424-166-0x0000000005BB0000-0x0000000006154000-memory.dmp

Filesize
5.6MB

Download
memory/4440-151-0x0000000006970000-0x000000000698E000-memory.dmp

Filesize
120KB

Download
memory/4440-157-0x00000000053F0000-0x0000000005400000-memory.dmp

Filesize
64KB

Download
memory/4440-158-0x00000000053F0000-0x0000000005400000-memory.dmp

Filesize
64KB

Download
memory/4440-156-0x00000000053F0000-0x0000000005400000-memory.dmp

Filesize
64KB

Download
memory/4440-136-0x0000000005400000-0x0000000005436000-memory.dmp

Filesize
216KB

Download
memory/4440-154-0x0000000006E50000-0x0000000006E6A000-memory.dmp

Filesize
104KB

Download
memory/4440-153-0x0000000007FE0000-0x000000000865A000-memory.dmp

Filesize
6.5MB

Download
memory/4440-152-0x00000000053F0000-0x0000000005400000-memory.dmp

Filesize
64KB

Download
memory/4440-139-0x00000000053F0000-0x0000000005400000-memory.dmp

Filesize
64KB

Download
memory/4440-146-0x0000000006350000-0x00000000063B6000-memory.dmp

Filesize
408KB

Download
memory/4440-140-0x0000000006270000-0x00000000062D6000-memory.dmp

Filesize
408KB

Download
memory/4440-137-0x0000000005A70000-0x0000000006098000-memory.dmp

Filesize
6.2MB

Download
memory/4440-138-0x00000000053F0000-0x0000000005400000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

Loading Replay Monitor...

Downloads