nanocore | 6161195354a684b757071dbd6d59e147ad6a0bb350218cf2ef64978319c78462

General

Target

PDF.exe
Size

341KB
MD5

3fda76bc627ca60ec8d9aee9d1a16b17
SHA1

411a2b06484c87a4933a6d71f23f2f80ed28ca65
SHA256

cb70c14b7aa724c2d1cf6881f0a864897d953c367ddbc002594da76941ac376a
SHA512

1dd410c41bbab510aee11d22416129b21a743dcc196e34500d4110be32190fb7374bf20d4b4cbae4c888a22c29ba7cdb775fa3dd97a9cb1aef19e409a1b3547e

Score

10^/10

nanocore evasion keylogger spyware stealer trojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

172.111.188.199:8829

Mutex

ce1d7a43-a4b9-4511-9ddf-1134841f2535

Attributes

activate_away_mode
true
backup_connection_host
backup_dns_server
8.8.4.4
buffer_size
65535
build_time
2020-02-02T10:25:40.952250336Z
bypass_user_account_control
true
bypass_user_account_control_data
clear_access_control
true
clear_zone_identifier
false
connect_delay
4000
connection_port
8829
default_group
Billi
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
ce1d7a43-a4b9-4511-9ddf-1134841f2535
mutex_timeout
5000
prevent_system_sleep
false
primary_connection_host
172.111.188.199
primary_dns_server
8.8.8.8
request_elevation
true
restart_delay
5000
run_delay
0
run_on_startup
true
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
Looks for VirtualBox Guest Additions in registry 2 TTPs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497
Looks for VMWare Tools registry key 2 TTPs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497

Checks BIOS information in registry 2 TTPs 2 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

PDF.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	PDF.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	PDF.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs
evasion trojan

System Information Discovery
T1082

Processes:

PDF.exe

description ioc process

Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA PDF.exe

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

Maps connected drives based on registry 3 TTPs 2 IoCs

Disk information is often read in order to detect sandboxing environments.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

Processes:

PDF.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	PDF.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0	PDF.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

PDF.exe

description pid process target process

PID 552 set thread context of 2012 552 PDF.exe 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 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task
T1053

Processes:

schtasks.exe

pid process

1268 schtasks.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

PDF.exe

pid process

2012 PDF.exe
2012 PDF.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

PDF.exe

description pid process

Token: SeDebugPrivilege 2012 PDF.exe

description	pid	process	target process
PID 552 set thread context of 2012	552	PDF.exe	PDF.exe

pid	process
1268	schtasks.exe

pid	process
2012	PDF.exe
2012	PDF.exe

description	pid	process
Token: SeDebugPrivilege	2012	PDF.exe

Suspicious use of WriteProcessMemory 13 IoCs

Processes:

PDF.exe

description	pid	process	target process
PID 552 wrote to memory of 1268	552	PDF.exe	schtasks.exe
PID 552 wrote to memory of 1268	552	PDF.exe	schtasks.exe
PID 552 wrote to memory of 1268	552	PDF.exe	schtasks.exe
PID 552 wrote to memory of 1268	552	PDF.exe	schtasks.exe
PID 552 wrote to memory of 2012	552	PDF.exe	PDF.exe
PID 552 wrote to memory of 2012	552	PDF.exe	PDF.exe
PID 552 wrote to memory of 2012	552	PDF.exe	PDF.exe
PID 552 wrote to memory of 2012	552	PDF.exe	PDF.exe
PID 552 wrote to memory of 2012	552	PDF.exe	PDF.exe
PID 552 wrote to memory of 2012	552	PDF.exe	PDF.exe
PID 552 wrote to memory of 2012	552	PDF.exe	PDF.exe
PID 552 wrote to memory of 2012	552	PDF.exe	PDF.exe
PID 552 wrote to memory of 2012	552	PDF.exe	PDF.exe

C:\Users\Admin\AppData\Local\Temp\PDF.exe
"C:\Users\Admin\AppData\Local\Temp\PDF.exe"
1⤵
- Checks BIOS information in registry
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:552

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\PqLXpPC" /XML "C:\Users\Admin\AppData\Local\Temp\tmpDA1A.tmp"
2⤵
- Creates scheduled task(s)
PID:1268

C:\Users\Admin\AppData\Local\Temp\PDF.exe
"{path}"
2⤵
- Checks whether UAC is enabled
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2012

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Virtualization/Sandbox Evasion

2

T1497

Credential Access

Discovery

Query Registry

4

T1012

Virtualization/Sandbox Evasion

2

T1497

System Information Discovery

4

T1082

Peripheral Device Discovery

1

T1120

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmpDA1A.tmp
Filesize
1KB

MD5
59aecf0a1a941e2af58fd628ce4c5af3

SHA1
05488865bd21398a5574fe63e4547983761f06ec

SHA256
de08528e0394d908cac513674b958e09e13eefc4532ed6bec111e18a72f2fe3c

SHA512
dec2aeb09b4d32fe61009eec5abee26d4b922309dd934126508728d2139bef57ef895b57ec567bc1301e71d8e62b5e0de3e4eb364b88d1d7cb04c477ca5a0f4f

Download Submit
memory/552-54-0x0000000075451000-0x0000000075453000-memory.dmp

Filesize
8KB

Download
memory/552-55-0x0000000074930000-0x0000000074EDB000-memory.dmp

Filesize
5.7MB

Download
memory/552-71-0x0000000002076000-0x0000000002087000-memory.dmp

Filesize
68KB

Download
memory/1268-56-0x0000000000000000-mapping.dmp

Download
memory/2012-59-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2012-61-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2012-62-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2012-64-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2012-65-0x000000000041E792-mapping.dmp

Download
memory/2012-67-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2012-69-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2012-58-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2012-72-0x0000000074930000-0x0000000074EDB000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads