nanocore | da5ede598b0921ec83296df2b0e625d3fb88fa05dc94d7771f8c25c2fc52da68

Analysis

max time kernel
133s
max time network
142s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
22-06-2024 18:46

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General

Target

Revised Proforma.exe
Size

1.2MB
MD5

046570a828d5e69cd2954bdda2a11237
SHA1

cb4cf09a0fe36818568f36baeff8e6c440144e99
SHA256

4acf03db392b5f729ddd9cd867ce0d39b5405ca170596a4c2df002785c6e15ff
SHA512

f197eb2ff09598e786bc0890e164947cb7ddc3ac7db77737517534e874ca4878a0da3bf2c63b537519f7fcc0097c6515ca6310264fe6c8d26b84c500c8301f86
SSDEEP

24576:aCdxte/80jYLT3U1jfsWazJPZD3Q5k8TE9k0Q:7w80cTsjkWazKE9m

Score

10^/10

nanocore evasion keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

95.213.251.165:54964

Mutex

98b3078c-a32d-4ad5-899c-a0f3dceb693c

Attributes

activate_away_mode
true
backup_connection_host
95.213.251.165
backup_dns_server
8.8.4.4
buffer_size
65535
build_time
2019-01-07T22:09:13.514087636Z
bypass_user_account_control
false
bypass_user_account_control_data
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
clear_access_control
false
clear_zone_identifier
false
connect_delay
4000
connection_port
54964
default_group
Default
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
98b3078c-a32d-4ad5-899c-a0f3dceb693c
mutex_timeout
5000
prevent_system_sleep
false
primary_connection_host
primary_dns_server
8.8.8.8
request_elevation
true
restart_delay
5000
run_delay
0
run_on_startup
false
set_critical_process
false
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
Drops startup file 1 IoCs

Processes:

Revised Proforma.exe

description ioc process

File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\cdp.url Revised Proforma.exe
Adds Run key to start application 2 TTPs 1 IoCs
persistence

Registry Run Keys / Startup Folder
T1547.001

Modify Registry
T1112

Processes:

RegAsm.exe

description ioc process

Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\DPI Subsystem = "C:\\Program Files (x86)\\DPI Subsystem\\dpiss.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
Suspicious use of SetThreadContext 1 IoCs

Processes:

Revised Proforma.exe

description pid process target process

PID 660 set thread context of 2344 660 Revised Proforma.exe RegAsm.exe
Drops file in Program Files directory 2 IoCs

Processes:

RegAsm.exe

description ioc process

File created C:\Program Files (x86)\DPI Subsystem\dpiss.exe RegAsm.exe
File opened for modification C:\Program Files (x86)\DPI Subsystem\dpiss.exe RegAsm.exe
Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence execution

Scheduled Task
T1053.005

Processes:

schtasks.exeschtasks.exe

pid process

2264 schtasks.exe
4748 schtasks.exe
Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

RegAsm.exe

pid process

2344 RegAsm.exe
2344 RegAsm.exe
2344 RegAsm.exe
Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

RegAsm.exe

pid process

2344 RegAsm.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

RegAsm.exe

description pid process

Token: SeDebugPrivilege 2344 RegAsm.exe
Token: SeDebugPrivilege 2344 RegAsm.exe
Suspicious use of FindShellTrayWindow 3 IoCs

Processes:

Revised Proforma.exe

pid process

660 Revised Proforma.exe
660 Revised Proforma.exe
660 Revised Proforma.exe
Suspicious use of SendNotifyMessage 3 IoCs

Processes:

Revised Proforma.exe

pid process

660 Revised Proforma.exe
660 Revised Proforma.exe
660 Revised Proforma.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\cdp.url	Revised Proforma.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\DPI Subsystem = "C:\\Program Files (x86)\\DPI Subsystem\\dpiss.exe"	RegAsm.exe

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

description	pid	process	target process
PID 660 set thread context of 2344	660	Revised Proforma.exe	RegAsm.exe

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

pid	process
2264	schtasks.exe
4748	schtasks.exe

pid	process
2344	RegAsm.exe
2344	RegAsm.exe
2344	RegAsm.exe

pid	process
2344	RegAsm.exe

description	pid	process
Token: SeDebugPrivilege	2344	RegAsm.exe
Token: SeDebugPrivilege	2344	RegAsm.exe

pid	process
660	Revised Proforma.exe
660	Revised Proforma.exe
660	Revised Proforma.exe

pid	process
660	Revised Proforma.exe
660	Revised Proforma.exe
660	Revised Proforma.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

Revised Proforma.exeRegAsm.exe

description	pid	process	target process
PID 660 wrote to memory of 2344	660	Revised Proforma.exe	RegAsm.exe
PID 660 wrote to memory of 2344	660	Revised Proforma.exe	RegAsm.exe
PID 660 wrote to memory of 2344	660	Revised Proforma.exe	RegAsm.exe
PID 660 wrote to memory of 2344	660	Revised Proforma.exe	RegAsm.exe
PID 660 wrote to memory of 2344	660	Revised Proforma.exe	RegAsm.exe
PID 2344 wrote to memory of 2264	2344	RegAsm.exe	schtasks.exe
PID 2344 wrote to memory of 2264	2344	RegAsm.exe	schtasks.exe
PID 2344 wrote to memory of 2264	2344	RegAsm.exe	schtasks.exe
PID 2344 wrote to memory of 4748	2344	RegAsm.exe	schtasks.exe
PID 2344 wrote to memory of 4748	2344	RegAsm.exe	schtasks.exe
PID 2344 wrote to memory of 4748	2344	RegAsm.exe	schtasks.exe

C:\Users\Admin\AppData\Local\Temp\Revised Proforma.exe
"C:\Users\Admin\AppData\Local\Temp\Revised Proforma.exe"
1⤵
- Drops startup file
- Suspicious use of SetThreadContext
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:660

C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
"C:\Windows\Microsoft.NET\Framework\v2.0.50727\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
- Suspicious use of WriteProcessMemory
PID:2344

C:\Windows\SysWOW64\schtasks.exe
"schtasks.exe" /create /f /tn "DPI Subsystem" /xml "C:\Users\Admin\AppData\Local\Temp\tmp491F.tmp"
3⤵
- Scheduled Task/Job: Scheduled Task
PID:2264

C:\Windows\SysWOW64\schtasks.exe
"schtasks.exe" /create /f /tn "DPI Subsystem Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp496E.tmp"
3⤵
- Scheduled Task/Job: Scheduled Task
PID:4748

Network

MITRE ATT&CK Matrix ATT&CK v13

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp491F.tmp
Filesize
1KB

MD5
c6f0625bf4c1cdfb699980c9243d3b22

SHA1
43de1fe580576935516327f17b5da0c656c72851

SHA256
8dfc4e937f0b2374e3ced25fce344b0731cf44b8854625b318d50ece2da8f576

SHA512
9ef2dbd4142ad0e1e6006929376ecb8011e7ffc801ee2101e906787d70325ad82752df65839de9972391fa52e1e5974ec1a5c7465a88aa56257633ebb7d70969

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp496E.tmp
Filesize
1KB

MD5
5fea24e883e06e4df6d240dc72abf2c5

SHA1
d778bf0f436141e02df4b421e8188abdcc9a84a4

SHA256
e858982f4ab3c74f7a8903eea18c0f73501a77273ae38b54d5c9dec997e79a66

SHA512
15afc2ffbbee14d28a5ff8dc8285d01c942147aada36fb33e31045a4e998769b51738bebe199bcad3462f918b535845a893aa2f80c84b9c795cd1fee4a327924

Download Submit
memory/660-5-0x0000000003C50000-0x0000000003C51000-memory.dmp

Filesize
4KB

Download
memory/2344-1-0x0000000000500000-0x0000000000538000-memory.dmp

Filesize
224KB

Download
memory/2344-6-0x0000000073752000-0x0000000073753000-memory.dmp

Filesize
4KB

Download
memory/2344-7-0x0000000073750000-0x0000000073D01000-memory.dmp

Filesize
5.7MB

Download
memory/2344-8-0x0000000073750000-0x0000000073D01000-memory.dmp

Filesize
5.7MB

Download
memory/2344-20-0x0000000073750000-0x0000000073D01000-memory.dmp

Filesize
5.7MB

Download
memory/2344-21-0x0000000073752000-0x0000000073753000-memory.dmp

Filesize
4KB

Download
memory/2344-22-0x0000000073750000-0x0000000073D01000-memory.dmp

Filesize
5.7MB

Download