nanocore | adb4e3ed6f26e81b77bfb28cf4ab4707b7047f4a432e582aa6875e686fbe48d5

Resubmissions

08-07-2024 23:38

240708-3mqr1svdqn 10

08-07-2024 23:37

240708-3l9thavdnm 10

08-07-2024 23:16

240708-29be6swfqe 10

08-07-2024 23:14

240708-27ygxstfrq 10

Analysis

max time kernel
145s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20240704-en
resource tags

arch:x64arch:x86image:win10v2004-20240704-enlocale:en-usos:windows10-2004-x64system
submitted
08-07-2024 23:16

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

RobloxTool2.45.exe
Size

560KB
MD5

a6d0cce9aed3e8a5253320afe320a5cf
SHA1

80c69e820ed28392af4adc0c86ccbf6ed011a347
SHA256

adb4e3ed6f26e81b77bfb28cf4ab4707b7047f4a432e582aa6875e686fbe48d5
SHA512

f6d21be9b58547c5f5396f7f14bac177090b2e00daaaef07424db9572d0efdc789cd80abfa6781a55e5fa26ee024b02b739c1a72090ee19e8fea5b7a85e66756
SSDEEP

12288:WLV6Btpmk25LG7Ilxs0G4ASfUsZblcfM1Zj7S:EApfayCW0XthbCM3S

Score

10^/10

nanocore evasion keylogger persistence spyware stealer trojan

Malware Config

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:

RobloxTool2.45.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\SMTP Subsystem = "C:\\Program Files (x86)\\SMTP Subsystem\\smtpss.exe"	RobloxTool2.45.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs
evasion trojan

System Information Discovery
T1082

Processes:

RobloxTool2.45.exe

description ioc process

Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA RobloxTool2.45.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	RobloxTool2.45.exe

Drops file in Program Files directory 2 IoCs

Processes:

RobloxTool2.45.exe

description	ioc	process
File created	C:\Program Files (x86)\SMTP Subsystem\smtpss.exe	RobloxTool2.45.exe
File opened for modification	C:\Program Files (x86)\SMTP Subsystem\smtpss.exe	RobloxTool2.45.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

448 schtasks.exe
2296 schtasks.exe

pid	process
448	schtasks.exe
2296	schtasks.exe

Suspicious behavior: EnumeratesProcesses 12 IoCs

Processes:

RobloxTool2.45.exe

pid	process
4844	RobloxTool2.45.exe
4844	RobloxTool2.45.exe
4844	RobloxTool2.45.exe
4844	RobloxTool2.45.exe
4844	RobloxTool2.45.exe
4844	RobloxTool2.45.exe
4844	RobloxTool2.45.exe
4844	RobloxTool2.45.exe
4844	RobloxTool2.45.exe
4844	RobloxTool2.45.exe
4844	RobloxTool2.45.exe
4844	RobloxTool2.45.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

RobloxTool2.45.exe

pid process

4844 RobloxTool2.45.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

RobloxTool2.45.exe

description pid process

Token: SeDebugPrivilege 4844 RobloxTool2.45.exe
Token: SeDebugPrivilege 4844 RobloxTool2.45.exe

description	pid	process
Token: SeDebugPrivilege	4844	RobloxTool2.45.exe
Token: SeDebugPrivilege	4844	RobloxTool2.45.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

RobloxTool2.45.exe

description	pid	process	target process
PID 4844 wrote to memory of 448	4844	RobloxTool2.45.exe	schtasks.exe
PID 4844 wrote to memory of 448	4844	RobloxTool2.45.exe	schtasks.exe
PID 4844 wrote to memory of 448	4844	RobloxTool2.45.exe	schtasks.exe
PID 4844 wrote to memory of 2296	4844	RobloxTool2.45.exe	schtasks.exe
PID 4844 wrote to memory of 2296	4844	RobloxTool2.45.exe	schtasks.exe
PID 4844 wrote to memory of 2296	4844	RobloxTool2.45.exe	schtasks.exe

C:\Users\Admin\AppData\Local\Temp\RobloxTool2.45.exe
"C:\Users\Admin\AppData\Local\Temp\RobloxTool2.45.exe"
1⤵
- 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:4844

C:\Windows\SysWOW64\schtasks.exe
"schtasks.exe" /create /f /tn "SMTP Subsystem" /xml "C:\Users\Admin\AppData\Local\Temp\tmp6ACB.tmp"
2⤵
- Scheduled Task/Job: Scheduled Task
PID:448

C:\Windows\SysWOW64\schtasks.exe
"schtasks.exe" /create /f /tn "SMTP Subsystem Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp6B58.tmp"
2⤵
- Scheduled Task/Job: Scheduled Task
PID:2296

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=2956,i,1468394940417093286,13535766203427582426,262144 --variations-seed-version --mojo-platform-channel-handle=4280 /prefetch:8
1⤵
PID:2956

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\tmp6ACB.tmp
Filesize
1KB

MD5
d5ff21d38f0e1018fc72aa2f55f011aa

SHA1
5ad2c2e8143cd0e0f6d7dcef7391ab572e3cea37

SHA256
bd4af90cd9750d3930b417bbb917fa3573d386dcb068e5a1fdca4ae88ee02382

SHA512
43772bfed10631fc1ff65f85fa0d8afcd562da2bdf3178cb9cbc49aa2d6b075020900fd8f53af3f080330b8bad36b257a6a51ff6fb4ee20025a389a7c27610a2

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp6B58.tmp
Filesize
1KB

MD5
0339b45ef206f4becc88be0d65e24b9e

SHA1
6503a1851f4ccd8c80a31f96bd7ae40d962c9fad

SHA256
3d568a47a8944a47f4aed6982755ac7ff7dda469cc1c81c213ecaa5d89de1f83

SHA512
c98f4513db34d50510dd986e0d812545c442bd5bef26932032b165759627fab4e00c95fe907ab3416a8a1042bfa77aa516c479f1ff7d1ec2f21ae66df8f72551

Download Submit
memory/4844-0-0x0000000074832000-0x0000000074833000-memory.dmp

Filesize
4KB

Download
memory/4844-1-0x0000000074830000-0x0000000074DE1000-memory.dmp

Filesize
5.7MB

Download
memory/4844-2-0x0000000074830000-0x0000000074DE1000-memory.dmp

Filesize
5.7MB

Download
memory/4844-10-0x0000000074830000-0x0000000074DE1000-memory.dmp

Filesize
5.7MB

Download
memory/4844-11-0x0000000074832000-0x0000000074833000-memory.dmp

Filesize
4KB

Download
memory/4844-12-0x0000000074830000-0x0000000074DE1000-memory.dmp

Filesize
5.7MB

Download
memory/4844-13-0x0000000074830000-0x0000000074DE1000-memory.dmp

Filesize
5.7MB

Download