nanocore | e7d95843559edd8cefcf0b11006c9431e9c1a6533f9ab1f202281287b7bb85f6

General

Target

invoices-docs-view.exe
Size

439KB
MD5

a635c9a6dfa79affe8bf27cb4eae89d4
SHA1

b0d2e8f668085ef770757c5498ba84f506285381
SHA256

ef5b4a828d4322e2ca5681423488e03e9991191809fc068d80ce0bbeba792984
SHA512

81e0b8d0dab93e4f566bbdaeab2a10396a95c6826a45fc02f41cf19fbbb6a41a2d592762d58b37ad4dc23ee08ead77e9e60372f2d630057b5f94cb3997ae1d3a

Score

10^/10

nanocore snakebot evasion keylogger persistence snakebot spyware stealer trojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

79.134.225.89:12190

Mutex

4e4951f6-c9ee-4a8b-863c-f53c12df989f

Attributes

activate_away_mode
true
backup_connection_host
79.134.225.89
backup_dns_server
8.8.4.4
buffer_size
65535
build_time
2020-02-17T01:50:29.200734436Z
bypass_user_account_control
true
bypass_user_account_control_data
clear_access_control
true
clear_zone_identifier
false
connect_delay
4000
connection_port
12190
default_group
cpa
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
4e4951f6-c9ee-4a8b-863c-f53c12df989f
mutex_timeout
5000
prevent_system_sleep
false
primary_connection_host
79.134.225.89
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
SnakeBOT
SnakeBOT is a heavily obfuscated .NET downloader.
snakebot

Contains SnakeBOT related strings 1 IoCs

snakebot

Processes:

resource	yara_rule
behavioral2/memory/2280-130-0x00000000000D0000-0x0000000000146000-memory.dmp	snakebot_strings

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:

invoices-docs-view.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Control Panel\International\Geo\Nation	invoices-docs-view.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

invoices-docs-view.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\WPA Monitor = "C:\\Program Files (x86)\\WPA Monitor\\wpamon.exe"	invoices-docs-view.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs
evasion trojan

System Information Discovery
T1082

Processes:

invoices-docs-view.exe

description ioc process

Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA invoices-docs-view.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

invoices-docs-view.exe

description pid process target process

PID 2280 set thread context of 4092 2280 invoices-docs-view.exe invoices-docs-view.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	invoices-docs-view.exe

description	pid	process	target process
PID 2280 set thread context of 4092	2280	invoices-docs-view.exe	invoices-docs-view.exe

Drops file in Program Files directory 2 IoCs

Processes:

invoices-docs-view.exe

description	ioc	process
File created	C:\Program Files (x86)\WPA Monitor\wpamon.exe	invoices-docs-view.exe
File opened for modification	C:\Program Files (x86)\WPA Monitor\wpamon.exe	invoices-docs-view.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

2988 schtasks.exe
Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

invoices-docs-view.exeinvoices-docs-view.exe

pid process

2280 invoices-docs-view.exe
4092 invoices-docs-view.exe
4092 invoices-docs-view.exe
4092 invoices-docs-view.exe
Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

invoices-docs-view.exe

pid process

4092 invoices-docs-view.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

invoices-docs-view.exeinvoices-docs-view.exe

description pid process

Token: SeDebugPrivilege 2280 invoices-docs-view.exe
Token: SeDebugPrivilege 4092 invoices-docs-view.exe
Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

invoices-docs-view.exe

pid process

2280 invoices-docs-view.exe
2280 invoices-docs-view.exe

pid	process
2988	schtasks.exe

pid	process
2280	invoices-docs-view.exe
4092	invoices-docs-view.exe
4092	invoices-docs-view.exe
4092	invoices-docs-view.exe

pid	process
4092	invoices-docs-view.exe

description	pid	process
Token: SeDebugPrivilege	2280	invoices-docs-view.exe
Token: SeDebugPrivilege	4092	invoices-docs-view.exe

pid	process
2280	invoices-docs-view.exe
2280	invoices-docs-view.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

invoices-docs-view.exe

description	pid	process	target process
PID 2280 wrote to memory of 2988	2280	invoices-docs-view.exe	schtasks.exe
PID 2280 wrote to memory of 2988	2280	invoices-docs-view.exe	schtasks.exe
PID 2280 wrote to memory of 2988	2280	invoices-docs-view.exe	schtasks.exe
PID 2280 wrote to memory of 4092	2280	invoices-docs-view.exe	invoices-docs-view.exe
PID 2280 wrote to memory of 4092	2280	invoices-docs-view.exe	invoices-docs-view.exe
PID 2280 wrote to memory of 4092	2280	invoices-docs-view.exe	invoices-docs-view.exe
PID 2280 wrote to memory of 4092	2280	invoices-docs-view.exe	invoices-docs-view.exe
PID 2280 wrote to memory of 4092	2280	invoices-docs-view.exe	invoices-docs-view.exe
PID 2280 wrote to memory of 4092	2280	invoices-docs-view.exe	invoices-docs-view.exe
PID 2280 wrote to memory of 4092	2280	invoices-docs-view.exe	invoices-docs-view.exe
PID 2280 wrote to memory of 4092	2280	invoices-docs-view.exe	invoices-docs-view.exe

C:\Users\Admin\AppData\Local\Temp\invoices-docs-view.exe
"C:\Users\Admin\AppData\Local\Temp\invoices-docs-view.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2280

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\IHVeunQQvXE" /XML "C:\Users\Admin\AppData\Local\Temp\tmpA53D.tmp"
2⤵
- Creates scheduled task(s)
PID:2988

C:\Users\Admin\AppData\Local\Temp\invoices-docs-view.exe
"{path}"
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:4092

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Registry Run Keys / Startup Folder

1

T1060

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

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

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\invoices-docs-view.exe.log
Filesize
1KB

MD5
400f1cc1a0a0ce1cdabda365ab3368ce

SHA1
1ecf683f14271d84f3b6063493dce00ff5f42075

SHA256
c8fa64f4b69df13ed6408fd4a204f318a36c2f38c85d4a4d42adfc9173f73765

SHA512
14c8cfd58d097e5e89c8cabe1e665173f1ccf604a9ef70cdcb84116e265f90819c19c891be408e0ad7e29086a5c2ea2883b7a7d1184878dbbac63e2cabcd1c45

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpA53D.tmp
Filesize
1KB

MD5
c792969ceb635ef6c951ed42f530551c

SHA1
fa5e6ed6375e2a4036a463acd8411df80dec5788

SHA256
ad4dc50ba37a946decbf50b89157256ebf217912c0e820a5d463d4e9a4e20032

SHA512
0a187f680ff42c4a3d45ef6e7d560d88a25f46ef404822fa85425a79df53c385a1c44cfe0fe43796520a485c1eb0b21902faa9077b06b22d743608b9eed36cf4

Download Submit
memory/2280-130-0x00000000000D0000-0x0000000000146000-memory.dmp

Filesize
472KB

Download
memory/2280-131-0x0000000007500000-0x0000000007AA4000-memory.dmp

Filesize
5.6MB

Download
memory/2280-132-0x0000000007030000-0x00000000070C2000-memory.dmp

Filesize
584KB

Download
memory/2280-133-0x0000000004400000-0x000000000440A000-memory.dmp

Filesize
40KB

Download
memory/2280-134-0x000000000A9A0000-0x000000000AA3C000-memory.dmp

Filesize
624KB

Download
memory/2988-135-0x0000000000000000-mapping.dmp

Download
memory/4092-137-0x0000000000000000-mapping.dmp

Download
memory/4092-138-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

Loading Replay Monitor...

Downloads