nanocore | df5d1424b5dd4caca6d9ea8a92406821634a2449f3cb3c42a53140360cdb49f1

General

Target

Urgent Quotation Request RFQ20202205 Short Delivery Preference.exe
Size

335KB
MD5

75250bd5c17ef8ef930881d75c5266cf
SHA1

acf4bc9e501bdb1fa3fef12e27dafb99606acda9
SHA256

3432874fb720b1dfb4e8325021377473de3b5811882cb563d4381ca4682ccbbb
SHA512

7efb35fe5772bf1ec8ea439ece77a7cfc013524c5101dc2a407191e1e754222735b34580ce60fc70fc40c9ada67336a512138c854dc166d64bdc59afc4fd33bc

Score

10^/10

nanocore evasion keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

194.5.99.21:19515

127.0.0.1:19515

Mutex

67804429-9250-4304-bc0e-3c5c0113c6bc

Attributes

activate_away_mode
true
backup_connection_host
127.0.0.1
backup_dns_server
8.8.4.4
buffer_size
65535
build_time
2020-03-03T10:47:34.527608136Z
bypass_user_account_control
true
bypass_user_account_control_data
clear_access_control
true
clear_zone_identifier
false
connect_delay
4000
connection_port
19515
default_group
May22
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
67804429-9250-4304-bc0e-3c5c0113c6bc
mutex_timeout
5000
prevent_system_sleep
false
primary_connection_host
194.5.99.21
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

Processes:

RegAsm.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\WPA Subsystem = "C:\\Program Files (x86)\\WPA Subsystem\\wpass.exe"	RegAsm.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs
evasion trojan

System Information Discovery
T1082

Processes:

RegAsm.exe

description ioc process

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

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

Suspicious use of SetThreadContext 1 IoCs

Processes:

Urgent Quotation Request RFQ20202205 Short Delivery Preference.exe

description	pid	process	target process
PID 1192 set thread context of 1940	1192	Urgent Quotation Request RFQ20202205 Short Delivery Preference.exe	RegAsm.exe

Drops file in Program Files directory 2 IoCs

Processes:

RegAsm.exe

description	ioc	process
File created	C:\Program Files (x86)\WPA Subsystem\wpass.exe	RegAsm.exe
File opened for modification	C:\Program Files (x86)\WPA Subsystem\wpass.exe	RegAsm.exe

Suspicious behavior: EnumeratesProcesses 10 IoCs

Processes:

Urgent Quotation Request RFQ20202205 Short Delivery Preference.exeRegAsm.exe

pid	process
1192	Urgent Quotation Request RFQ20202205 Short Delivery Preference.exe
1192	Urgent Quotation Request RFQ20202205 Short Delivery Preference.exe
1192	Urgent Quotation Request RFQ20202205 Short Delivery Preference.exe
1192	Urgent Quotation Request RFQ20202205 Short Delivery Preference.exe
1192	Urgent Quotation Request RFQ20202205 Short Delivery Preference.exe
1192	Urgent Quotation Request RFQ20202205 Short Delivery Preference.exe
1192	Urgent Quotation Request RFQ20202205 Short Delivery Preference.exe
1192	Urgent Quotation Request RFQ20202205 Short Delivery Preference.exe
1940	RegAsm.exe
1940	RegAsm.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

RegAsm.exe

pid process

1940 RegAsm.exe

pid	process
1940	RegAsm.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

Urgent Quotation Request RFQ20202205 Short Delivery Preference.exeRegAsm.exe

description	pid	process
Token: SeDebugPrivilege	1192	Urgent Quotation Request RFQ20202205 Short Delivery Preference.exe
Token: SeDebugPrivilege	1940	RegAsm.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

Urgent Quotation Request RFQ20202205 Short Delivery Preference.exe

description	pid	process	target process
PID 1192 wrote to memory of 1940	1192	Urgent Quotation Request RFQ20202205 Short Delivery Preference.exe	RegAsm.exe
PID 1192 wrote to memory of 1940	1192	Urgent Quotation Request RFQ20202205 Short Delivery Preference.exe	RegAsm.exe
PID 1192 wrote to memory of 1940	1192	Urgent Quotation Request RFQ20202205 Short Delivery Preference.exe	RegAsm.exe
PID 1192 wrote to memory of 1940	1192	Urgent Quotation Request RFQ20202205 Short Delivery Preference.exe	RegAsm.exe
PID 1192 wrote to memory of 1940	1192	Urgent Quotation Request RFQ20202205 Short Delivery Preference.exe	RegAsm.exe
PID 1192 wrote to memory of 1940	1192	Urgent Quotation Request RFQ20202205 Short Delivery Preference.exe	RegAsm.exe
PID 1192 wrote to memory of 1940	1192	Urgent Quotation Request RFQ20202205 Short Delivery Preference.exe	RegAsm.exe
PID 1192 wrote to memory of 1940	1192	Urgent Quotation Request RFQ20202205 Short Delivery Preference.exe	RegAsm.exe
PID 1192 wrote to memory of 1940	1192	Urgent Quotation Request RFQ20202205 Short Delivery Preference.exe	RegAsm.exe
PID 1192 wrote to memory of 1940	1192	Urgent Quotation Request RFQ20202205 Short Delivery Preference.exe	RegAsm.exe
PID 1192 wrote to memory of 1940	1192	Urgent Quotation Request RFQ20202205 Short Delivery Preference.exe	RegAsm.exe
PID 1192 wrote to memory of 1940	1192	Urgent Quotation Request RFQ20202205 Short Delivery Preference.exe	RegAsm.exe

C:\Users\Admin\AppData\Local\Temp\Urgent Quotation Request RFQ20202205 Short Delivery Preference.exe
"C:\Users\Admin\AppData\Local\Temp\Urgent Quotation Request RFQ20202205 Short Delivery Preference.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1192

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.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
PID:1940

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

memory/1192-54-0x0000000000150000-0x00000000001AA000-memory.dmp

Filesize
360KB

Download
memory/1192-55-0x00000000765C1000-0x00000000765C3000-memory.dmp

Filesize
8KB

Download
memory/1192-56-0x00000000002C0000-0x00000000002C8000-memory.dmp

Filesize
32KB

Download
memory/1192-57-0x0000000001FC0000-0x0000000002000000-memory.dmp

Filesize
256KB

Download
memory/1192-58-0x0000000000330000-0x0000000000346000-memory.dmp

Filesize
88KB

Download
memory/1192-59-0x0000000000710000-0x0000000000722000-memory.dmp

Filesize
72KB

Download
memory/1940-60-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1940-61-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1940-63-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1940-64-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1940-66-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1940-67-0x000000000041E792-mapping.dmp

Download
memory/1940-71-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1940-69-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1940-73-0x0000000000540000-0x000000000054A000-memory.dmp

Filesize
40KB

Download
memory/1940-74-0x0000000000550000-0x000000000056E000-memory.dmp

Filesize
120KB

Download
memory/1940-75-0x0000000000570000-0x000000000057A000-memory.dmp

Filesize
40KB

Download
memory/1940-76-0x0000000000E25000-0x0000000000E36000-memory.dmp

Filesize
68KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads