nanocore | 5f5e91ec90f4e5afb30a76069d2e3036247b15d79a10d8561dc9856e3854b3c0

Analysis

max time kernel
150s
max time network
145s
platform
windows7_x64
resource
win7-20240611-en
resource tags

arch:x64arch:x86image:win7-20240611-enlocale:en-usos:windows7-x64system
submitted
15-06-2024 22:11

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General

Target

b05c46f14ddf7ebfaab396f9f540787e_JaffaCakes118.exe
Size

1013KB
MD5

b05c46f14ddf7ebfaab396f9f540787e
SHA1

ca2f0b7950ac3697e672c98190eb04f386e65ac3
SHA256

5f5e91ec90f4e5afb30a76069d2e3036247b15d79a10d8561dc9856e3854b3c0
SHA512

f19d16c7545718bc5e27dea8249478f703d1cea905dbbbd0678825c67c34beb9d1c2060502075765e5545c536ecf5450f7b62d4bd390a04a9e88f7b7a4e5ddb4
SSDEEP

24576:HHSSMkz9i+LFsxkrxiLMQQ6LPAshFiFeH1:HH9B5Cxk9JeH1

Score

10^/10

nanocore evasion keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

tallboy.zapto.org:2669

Mutex

721e5ca6-2a7d-4e47-90be-697197d2647d

Attributes

activate_away_mode
true
backup_connection_host
backup_dns_server
8.8.4.4
buffer_size
65535
build_time
2017-05-09T08:28:08.263783636Z
bypass_user_account_control
true
bypass_user_account_control_data
clear_access_control
true
clear_zone_identifier
true
connect_delay
4000
connection_port
2669
default_group
PM
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
721e5ca6-2a7d-4e47-90be-697197d2647d
mutex_timeout
5000
prevent_system_sleep
true
primary_connection_host
tallboy.zapto.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

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

b05c46f14ddf7ebfaab396f9f540787e_JaffaCakes118.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2812790648-3157963462-487717889-1000\Software\Microsoft\Windows\CurrentVersion\Run\ = "C:\\Users\\Admin\\AppData\\Roaming\\dtfdygfuhh\\tfghjuku.exe"	b05c46f14ddf7ebfaab396f9f540787e_JaffaCakes118.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:

b05c46f14ddf7ebfaab396f9f540787e_JaffaCakes118.exe

description	pid	process	target process
PID 2452 set thread context of 2124	2452	b05c46f14ddf7ebfaab396f9f540787e_JaffaCakes118.exe	regasm.exe
PID 2452 set thread context of 2816	2452	b05c46f14ddf7ebfaab396f9f540787e_JaffaCakes118.exe	notepad.exe

Opens file in notepad (likely ransom note) 1 IoCs
ransomware

Processes:

notepad.exe

pid process

2816 notepad.exe

pid	process
2816	notepad.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

b05c46f14ddf7ebfaab396f9f540787e_JaffaCakes118.exeregasm.exenotepad.exe

pid	process
2452	b05c46f14ddf7ebfaab396f9f540787e_JaffaCakes118.exe
2124	regasm.exe
2124	regasm.exe
2816	notepad.exe
2816	notepad.exe
2816	notepad.exe
2816	notepad.exe
2816	notepad.exe
2816	notepad.exe
2816	notepad.exe
2816	notepad.exe
2816	notepad.exe
2816	notepad.exe
2816	notepad.exe
2816	notepad.exe
2816	notepad.exe
2816	notepad.exe
2816	notepad.exe
2816	notepad.exe
2816	notepad.exe
2816	notepad.exe
2816	notepad.exe
2816	notepad.exe
2816	notepad.exe
2816	notepad.exe
2816	notepad.exe
2816	notepad.exe
2816	notepad.exe
2816	notepad.exe
2816	notepad.exe
2816	notepad.exe
2816	notepad.exe
2816	notepad.exe
2816	notepad.exe
2816	notepad.exe
2816	notepad.exe
2816	notepad.exe
2816	notepad.exe
2816	notepad.exe
2816	notepad.exe
2816	notepad.exe
2816	notepad.exe
2816	notepad.exe
2816	notepad.exe
2816	notepad.exe
2816	notepad.exe
2816	notepad.exe
2816	notepad.exe
2816	notepad.exe
2816	notepad.exe
2816	notepad.exe
2816	notepad.exe
2816	notepad.exe
2816	notepad.exe
2816	notepad.exe
2816	notepad.exe
2816	notepad.exe
2816	notepad.exe
2816	notepad.exe
2816	notepad.exe
2816	notepad.exe
2816	notepad.exe
2816	notepad.exe
2816	notepad.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

regasm.exe

pid process

2124 regasm.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

regasm.exe

description pid process

Token: SeDebugPrivilege 2124 regasm.exe

pid	process
2124	regasm.exe

description	pid	process
Token: SeDebugPrivilege	2124	regasm.exe

Suspicious use of WriteProcessMemory 22 IoCs

Processes:

b05c46f14ddf7ebfaab396f9f540787e_JaffaCakes118.exe

description	pid	process	target process
PID 2452 wrote to memory of 1192	2452	b05c46f14ddf7ebfaab396f9f540787e_JaffaCakes118.exe	regasm.exe
PID 2452 wrote to memory of 1192	2452	b05c46f14ddf7ebfaab396f9f540787e_JaffaCakes118.exe	regasm.exe
PID 2452 wrote to memory of 1192	2452	b05c46f14ddf7ebfaab396f9f540787e_JaffaCakes118.exe	regasm.exe
PID 2452 wrote to memory of 1192	2452	b05c46f14ddf7ebfaab396f9f540787e_JaffaCakes118.exe	regasm.exe
PID 2452 wrote to memory of 1192	2452	b05c46f14ddf7ebfaab396f9f540787e_JaffaCakes118.exe	regasm.exe
PID 2452 wrote to memory of 1192	2452	b05c46f14ddf7ebfaab396f9f540787e_JaffaCakes118.exe	regasm.exe
PID 2452 wrote to memory of 1192	2452	b05c46f14ddf7ebfaab396f9f540787e_JaffaCakes118.exe	regasm.exe
PID 2452 wrote to memory of 2124	2452	b05c46f14ddf7ebfaab396f9f540787e_JaffaCakes118.exe	regasm.exe
PID 2452 wrote to memory of 2124	2452	b05c46f14ddf7ebfaab396f9f540787e_JaffaCakes118.exe	regasm.exe
PID 2452 wrote to memory of 2124	2452	b05c46f14ddf7ebfaab396f9f540787e_JaffaCakes118.exe	regasm.exe
PID 2452 wrote to memory of 2124	2452	b05c46f14ddf7ebfaab396f9f540787e_JaffaCakes118.exe	regasm.exe
PID 2452 wrote to memory of 2124	2452	b05c46f14ddf7ebfaab396f9f540787e_JaffaCakes118.exe	regasm.exe
PID 2452 wrote to memory of 2124	2452	b05c46f14ddf7ebfaab396f9f540787e_JaffaCakes118.exe	regasm.exe
PID 2452 wrote to memory of 2124	2452	b05c46f14ddf7ebfaab396f9f540787e_JaffaCakes118.exe	regasm.exe
PID 2452 wrote to memory of 2124	2452	b05c46f14ddf7ebfaab396f9f540787e_JaffaCakes118.exe	regasm.exe
PID 2452 wrote to memory of 2124	2452	b05c46f14ddf7ebfaab396f9f540787e_JaffaCakes118.exe	regasm.exe
PID 2452 wrote to memory of 2816	2452	b05c46f14ddf7ebfaab396f9f540787e_JaffaCakes118.exe	notepad.exe
PID 2452 wrote to memory of 2816	2452	b05c46f14ddf7ebfaab396f9f540787e_JaffaCakes118.exe	notepad.exe
PID 2452 wrote to memory of 2816	2452	b05c46f14ddf7ebfaab396f9f540787e_JaffaCakes118.exe	notepad.exe
PID 2452 wrote to memory of 2816	2452	b05c46f14ddf7ebfaab396f9f540787e_JaffaCakes118.exe	notepad.exe
PID 2452 wrote to memory of 2816	2452	b05c46f14ddf7ebfaab396f9f540787e_JaffaCakes118.exe	notepad.exe
PID 2452 wrote to memory of 2816	2452	b05c46f14ddf7ebfaab396f9f540787e_JaffaCakes118.exe	notepad.exe

C:\Users\Admin\AppData\Local\Temp\b05c46f14ddf7ebfaab396f9f540787e_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\b05c46f14ddf7ebfaab396f9f540787e_JaffaCakes118.exe"
1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2452

C:\Windows\Microsoft.NET\Framework\v2.0.50727\regasm.exe
"C:\Windows\Microsoft.NET\Framework\v2.0.50727\regasm.exe"
2⤵
PID:1192

C:\Windows\Microsoft.NET\Framework\v2.0.50727\regasm.exe
"C:\Windows\Microsoft.NET\Framework\v2.0.50727\regasm.exe"
2⤵
- Checks whether UAC is enabled
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
PID:2124

C:\Windows\SysWOW64\notepad.exe
persistencecmd 0 "C:\Users\Admin\AppData\Roaming\dtfdygfuhh\tfghjuku.exe"
2⤵
- Opens file in notepad (likely ransom note)
- Suspicious behavior: EnumeratesProcesses
PID:2816

Network

MITRE ATT&CK Matrix ATT&CK v13

Replay Monitor

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Downloads

memory/2124-16-0x0000000074972000-0x0000000074974000-memory.dmp

Filesize
8KB

Download
memory/2124-6-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2124-8-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2124-21-0x0000000074972000-0x0000000074974000-memory.dmp

Filesize
8KB

Download
memory/2124-3-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2124-23-0x0000000000AB0000-0x0000000000AF0000-memory.dmp

Filesize
256KB

Download
memory/2124-19-0x0000000000AB0000-0x0000000000AF0000-memory.dmp

Filesize
256KB

Download
memory/2452-0-0x0000000000220000-0x0000000000221000-memory.dmp

Filesize
4KB

Download
memory/2452-11-0x0000000000400000-0x00000000004D1000-memory.dmp

Filesize
836KB

Download
memory/2452-1-0x0000000003170000-0x0000000003265000-memory.dmp

Filesize
980KB

Download
memory/2452-14-0x0000000003170000-0x0000000003265000-memory.dmp

Filesize
980KB

Download
memory/2816-9-0x0000000000400000-0x00000000004D1000-memory.dmp

Filesize
836KB

Download
memory/2816-10-0x0000000000400000-0x00000000004D1000-memory.dmp

Filesize
836KB

Download
memory/2816-17-0x0000000003150000-0x0000000003245000-memory.dmp

Filesize
980KB

Download
memory/2816-15-0x0000000000120000-0x0000000000121000-memory.dmp

Filesize
4KB

Download
memory/2816-20-0x0000000000400000-0x00000000004D1000-memory.dmp

Filesize
836KB

Download
memory/2816-13-0x0000000000400000-0x00000000004D1000-memory.dmp

Filesize
836KB

Download
memory/2816-22-0x0000000003150000-0x0000000003245000-memory.dmp

Filesize
980KB

Download
memory/2816-12-0x0000000000400000-0x00000000004D1000-memory.dmp

Filesize
836KB

Download