nanocore | d7c2e9e5ffb01b01d10d74c1eddd8746c534434891abeeedce9be0e3fe4f9019

General

Target

RFQ_EV14.exe
Size

809KB
MD5

99bb0b02b0a34a1195d08083d9ba1304
SHA1

a1fb34b91099a5ba45d866bc0e0921a46f270714
SHA256

f9155082e1d12e318287a25bb73036feab7c75b7f0c3c1c30f457cbecaf9763a
SHA512

1731050577632b241ff316f1f577c46dae0a4435619394d937e24c29c2633e585c38e21aa75556b61eb64376ab0a241ee20a4f3391e4853760cc88ae5fe65647

Score

10^/10

nanocore evasion keylogger rezer0 spyware stealer trojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

davidflick.duckdns.org:6688

Mutex

6fdb152e-936d-45da-bd61-bea41c48f484

Attributes

activate_away_mode
true
backup_connection_host
backup_dns_server
8.8.4.4
buffer_size
65535
build_time
2020-01-29T18:45:16.687679836Z
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
6688
default_group
New Nano
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
6fdb152e-936d-45da-bd61-bea41c48f484
mutex_timeout
5000
prevent_system_sleep
false
primary_connection_host
davidflick.duckdns.org
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

ReZer0 packer 1 IoCs

Detects ReZer0, a packer with multiple versions used in various campaigns.

rezer0

Processes:

resource	yara_rule
behavioral1/memory/1516-57-0x0000000000C90000-0x0000000000CD2000-memory.dmp	rezer0

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:

RFQ_EV14.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	RFQ_EV14.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	RFQ_EV14.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs
evasion trojan

System Information Discovery
T1082

Processes:

RFQ_EV14.exe

description ioc process

Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA RFQ_EV14.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	RFQ_EV14.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:

RFQ_EV14.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	RFQ_EV14.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0	RFQ_EV14.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

RFQ_EV14.exe

description pid process target process

PID 1516 set thread context of 528 1516 RFQ_EV14.exe RFQ_EV14.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

328 schtasks.exe
1556 schtasks.exe
Suspicious behavior: EnumeratesProcesses 5 IoCs

Processes:

RFQ_EV14.exeRFQ_EV14.exe

pid process

1516 RFQ_EV14.exe
1516 RFQ_EV14.exe
1516 RFQ_EV14.exe
528 RFQ_EV14.exe
528 RFQ_EV14.exe
Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

RFQ_EV14.exe

pid process

528 RFQ_EV14.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

RFQ_EV14.exeRFQ_EV14.exe

description pid process

Token: SeDebugPrivilege 1516 RFQ_EV14.exe
Token: SeDebugPrivilege 528 RFQ_EV14.exe

description	pid	process	target process
PID 1516 set thread context of 528	1516	RFQ_EV14.exe	RFQ_EV14.exe

pid	process
328	schtasks.exe
1556	schtasks.exe

pid	process
1516	RFQ_EV14.exe
1516	RFQ_EV14.exe
1516	RFQ_EV14.exe
528	RFQ_EV14.exe
528	RFQ_EV14.exe

pid	process
528	RFQ_EV14.exe

description	pid	process
Token: SeDebugPrivilege	1516	RFQ_EV14.exe
Token: SeDebugPrivilege	528	RFQ_EV14.exe

Suspicious use of WriteProcessMemory 17 IoCs

Processes:

RFQ_EV14.exeRFQ_EV14.exe

description	pid	process	target process
PID 1516 wrote to memory of 328	1516	RFQ_EV14.exe	schtasks.exe
PID 1516 wrote to memory of 328	1516	RFQ_EV14.exe	schtasks.exe
PID 1516 wrote to memory of 328	1516	RFQ_EV14.exe	schtasks.exe
PID 1516 wrote to memory of 328	1516	RFQ_EV14.exe	schtasks.exe
PID 1516 wrote to memory of 528	1516	RFQ_EV14.exe	RFQ_EV14.exe
PID 1516 wrote to memory of 528	1516	RFQ_EV14.exe	RFQ_EV14.exe
PID 1516 wrote to memory of 528	1516	RFQ_EV14.exe	RFQ_EV14.exe
PID 1516 wrote to memory of 528	1516	RFQ_EV14.exe	RFQ_EV14.exe
PID 1516 wrote to memory of 528	1516	RFQ_EV14.exe	RFQ_EV14.exe
PID 1516 wrote to memory of 528	1516	RFQ_EV14.exe	RFQ_EV14.exe
PID 1516 wrote to memory of 528	1516	RFQ_EV14.exe	RFQ_EV14.exe
PID 1516 wrote to memory of 528	1516	RFQ_EV14.exe	RFQ_EV14.exe
PID 1516 wrote to memory of 528	1516	RFQ_EV14.exe	RFQ_EV14.exe
PID 528 wrote to memory of 1556	528	RFQ_EV14.exe	schtasks.exe
PID 528 wrote to memory of 1556	528	RFQ_EV14.exe	schtasks.exe
PID 528 wrote to memory of 1556	528	RFQ_EV14.exe	schtasks.exe
PID 528 wrote to memory of 1556	528	RFQ_EV14.exe	schtasks.exe

C:\Users\Admin\AppData\Local\Temp\RFQ_EV14.exe
"C:\Users\Admin\AppData\Local\Temp\RFQ_EV14.exe"
1⤵
- Checks BIOS information in registry
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1516

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\ZDxdvnkAk" /XML "C:\Users\Admin\AppData\Local\Temp\tmp9D59.tmp"
2⤵
- Creates scheduled task(s)
PID:328

C:\Users\Admin\AppData\Local\Temp\RFQ_EV14.exe
"{path}"
2⤵
- Checks whether UAC is enabled
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:528

C:\Windows\SysWOW64\schtasks.exe
"schtasks.exe" /create /f /tn "ARP Service" /xml "C:\Users\Admin\AppData\Local\Temp\tmpC19B.tmp"
3⤵
- Creates scheduled task(s)
PID:1556

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\tmp9D59.tmp
Filesize
1KB

MD5
76e8d893ed0ffa01fff67a3b733c8110

SHA1
69c9a85756d4df3feb37f1420e0409a3da6bbb6b

SHA256
9a7301ca1cff85e22da5698a73dfb5360e7b1135326e9aa0270bf977dd03ddc9

SHA512
fdb524302bac80c73a8aead35bbc2fdea894c45a3792f7526cdeea6361b6d38ab54caf12b5e4222fbda4cfa6e3e0c303d54eef6be303b08a3b5caf64dae99a87

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpC19B.tmp
Filesize
1KB

MD5
f48ce984afef17119123ec098a2c1db2

SHA1
ec1c52f039e2b636333643b7569b0a2346267efe

SHA256
4c93e1ba36b54faf35efc9503d1d14198cf8e0f20f620658a9c5d8ae302ba110

SHA512
f61bbbf5b95749281f8fb86c72d3bfaf5a4a5e9cddadee6c512380f5794e063adb69dd5692a400124d769e8a3b8d9a22c1e654d4e5cf2d88b2322ce482a8cda4

Download Submit
memory/328-58-0x0000000000000000-mapping.dmp

Download
memory/528-67-0x000000000041E792-mapping.dmp

Download
memory/528-69-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/528-77-0x00000000003F0000-0x00000000003FA000-memory.dmp

Filesize
40KB

Download
memory/528-60-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/528-61-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/528-63-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/528-64-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/528-76-0x0000000000480000-0x000000000049E000-memory.dmp

Filesize
120KB

Download
memory/528-66-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/528-75-0x00000000003E0000-0x00000000003EA000-memory.dmp

Filesize
40KB

Download
memory/528-71-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/528-72-0x00000000755A1000-0x00000000755A3000-memory.dmp

Filesize
8KB

Download
memory/1516-55-0x00000000005D0000-0x0000000000618000-memory.dmp

Filesize
288KB

Download
memory/1516-57-0x0000000000C90000-0x0000000000CD2000-memory.dmp

Filesize
264KB

Download
memory/1516-54-0x0000000000CD0000-0x0000000000DA2000-memory.dmp

Filesize
840KB

Download
memory/1516-56-0x0000000000440000-0x0000000000448000-memory.dmp

Filesize
32KB

Download
memory/1556-73-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads