nanocore | 0d79536202660c5f64dac143d481aa91374cd2281c593bd2e4573d90df1f9369

General

Target

Documents AWB 5-5-2020.exe
Size

624KB
MD5

9c97db9b4c7abc229cd0ecde2d4835c0
SHA1

d17aabdf43d9bea4c10cf31ce16c0d7592579c64
SHA256

dca09e669f01dcc5efa9ab9120ce3febd53868b3ba12a6e0b4574b82b3d0e392
SHA512

31cb47c8319cfedec4526c466daf066f03d081b381ba2dbf80353c7bd3c247aeef4b01c52430762c63fc148a900e13650ba42fdc26879d2c0f15d8e6201219fd

Score

10^/10

nanocore evasion keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

atallatall.ddns.net:5355

127.0.0.1:5355

Mutex

89e6cd78-9910-49b0-9bd8-c349f0a39e34

Attributes

activate_away_mode
true
backup_connection_host
127.0.0.1
backup_dns_server
8.8.4.4
buffer_size
65535
build_time
2020-02-09T20:42:30.623082036Z
bypass_user_account_control
true
bypass_user_account_control_data
clear_access_control
true
clear_zone_identifier
false
connect_delay
4000
connection_port
5355
default_group
ATALL CURRENCY ETRADE
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
89e6cd78-9910-49b0-9bd8-c349f0a39e34
mutex_timeout
5000
prevent_system_sleep
false
primary_connection_host
atallatall.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

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:

Documents AWB 5-5-2020.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Control Panel\International\Geo\Nation	Documents AWB 5-5-2020.exe

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\SCSI Subsystem = "C:\\Program Files (x86)\\SCSI Subsystem\\scsiss.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 2 IoCs

Processes:

Documents AWB 5-5-2020.exeRegAsm.exe

description	pid	process	target process
PID 4936 set thread context of 4556	4936	Documents AWB 5-5-2020.exe	RegAsm.exe
PID 4556 set thread context of 2840	4556	RegAsm.exe	RegAsm.exe

Drops file in Program Files directory 2 IoCs

Processes:

RegAsm.exe

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

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

RegAsm.exe

pid process

2840 RegAsm.exe
2840 RegAsm.exe
2840 RegAsm.exe
Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

RegAsm.exe

pid process

2840 RegAsm.exe
Suspicious behavior: MapViewOfSection 2 IoCs

Processes:

Documents AWB 5-5-2020.exeRegAsm.exe

pid process

4936 Documents AWB 5-5-2020.exe
4556 RegAsm.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

RegAsm.exe

description pid process

Token: SeDebugPrivilege 2840 RegAsm.exe

pid	process
2840	RegAsm.exe
2840	RegAsm.exe
2840	RegAsm.exe

pid	process
2840	RegAsm.exe

pid	process
4936	Documents AWB 5-5-2020.exe
4556	RegAsm.exe

description	pid	process
Token: SeDebugPrivilege	2840	RegAsm.exe

Suspicious use of WriteProcessMemory 14 IoCs

Processes:

Documents AWB 5-5-2020.exeRegAsm.execmd.exe

description	pid	process	target process
PID 4936 wrote to memory of 4556	4936	Documents AWB 5-5-2020.exe	RegAsm.exe
PID 4936 wrote to memory of 4556	4936	Documents AWB 5-5-2020.exe	RegAsm.exe
PID 4936 wrote to memory of 4556	4936	Documents AWB 5-5-2020.exe	RegAsm.exe
PID 4936 wrote to memory of 4556	4936	Documents AWB 5-5-2020.exe	RegAsm.exe
PID 4556 wrote to memory of 2840	4556	RegAsm.exe	RegAsm.exe
PID 4556 wrote to memory of 2840	4556	RegAsm.exe	RegAsm.exe
PID 4556 wrote to memory of 2840	4556	RegAsm.exe	RegAsm.exe
PID 4556 wrote to memory of 2840	4556	RegAsm.exe	RegAsm.exe
PID 4936 wrote to memory of 5056	4936	Documents AWB 5-5-2020.exe	cmd.exe
PID 4936 wrote to memory of 5056	4936	Documents AWB 5-5-2020.exe	cmd.exe
PID 4936 wrote to memory of 5056	4936	Documents AWB 5-5-2020.exe	cmd.exe
PID 5056 wrote to memory of 4604	5056	cmd.exe	choice.exe
PID 5056 wrote to memory of 4604	5056	cmd.exe	choice.exe
PID 5056 wrote to memory of 4604	5056	cmd.exe	choice.exe

C:\Users\Admin\AppData\Local\Temp\Documents AWB 5-5-2020.exe
"C:\Users\Admin\AppData\Local\Temp\Documents AWB 5-5-2020.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:4936

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:4556

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
3⤵
- 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:2840

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C choice /C Y /N /D Y /T 3 & Del "C:\Users\Admin\AppData\Local\Temp\Documents AWB 5-5-2020.exe"
2⤵
- Suspicious use of WriteProcessMemory
PID:5056

C:\Windows\SysWOW64\choice.exe
choice /C Y /N /D Y /T 3
3⤵
PID:4604

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

Query Registry

1

T1012

System Information Discovery

3

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\RegAsm.exe.log
Filesize
226B

MD5
916851e072fbabc4796d8916c5131092

SHA1
d48a602229a690c512d5fdaf4c8d77547a88e7a2

SHA256
7e750c904c43d27c89e55af809a679a96c0bb63fc511006ffbceffc2c7f6fb7d

SHA512
07ce4c881d6c411cac0b62364377e77950797c486804fb10d00555458716e3c47b1efc0d1f37e4cc3b7e6565bb402ca01c7ea8c963f9f9ace941a6e3883d2521

Download Submit
memory/2840-139-0x00000000059B0000-0x0000000005A4C000-memory.dmp

Filesize
624KB

Download
memory/2840-134-0x0000000000000000-mapping.dmp

Download
memory/2840-136-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2840-137-0x0000000005F60000-0x0000000006504000-memory.dmp

Filesize
5.6MB

Download
memory/2840-138-0x00000000058B0000-0x0000000005942000-memory.dmp

Filesize
584KB

Download
memory/2840-140-0x0000000005830000-0x000000000583A000-memory.dmp

Filesize
40KB

Download
memory/4556-132-0x0000000000000000-mapping.dmp

Download
memory/4556-133-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/4604-142-0x0000000000000000-mapping.dmp

Download
memory/4936-131-0x00000000049D0000-0x00000000049D3000-memory.dmp

Filesize
12KB

Download
memory/4936-130-0x0000000000030000-0x00000000000D2000-memory.dmp

Filesize
648KB

Download
memory/5056-141-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads