nanocore | adb4e3ed6f26e81b77bfb28cf4ab4707b7047f4a432e582aa6875e686fbe48d5

Resubmissions

08/07/2024, 23:38

240708-3mqr1svdqn10

08/07/2024, 23:37

08/07/2024, 23:17

08/07/2024, 23:16

08/07/2024, 23:14

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

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General

Target
RobloxTool2.45.exe
Size 560KB
Sample240708-29be6swfqe
SHA256 adb4e3ed6f26e81b77bfb28cf4ab4707b7047f4a432e582aa6875e686fbe48d5
MD5 a6d0cce9aed3e8a5253320afe320a5cf
SHA1 80c69e820ed28392af4adc0c86ccbf6ed011a347
SHA512 f6d21be9b58547c5f5396f7f14bac177090b2e00daaaef07424db9572d0efdc789cd80abfa6781a55e5fa26ee024b02b739c1a72090ee19e8fea5b7a85e66756
SSDEEP 12288:WLV6Btpmk25LG7Ilxs0G4ASfUsZblcfM1Zj7S:EApfayCW0XthbCM3S
MD5 SHA1 SHA512 SSDEEP

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

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

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

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

pid	Process
448	schtasks.exe
2296	schtasks.exe

Suspicious behavior: EnumeratesProcesses 12 IoCs

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

pid	Process
4844	RobloxTool2.45.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

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

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4844 wrote to memory of 448	4844	RobloxTool2.45.exe	93
PID 4844 wrote to memory of 448	4844	RobloxTool2.45.exe	93
PID 4844 wrote to memory of 448	4844	RobloxTool2.45.exe	93
PID 4844 wrote to memory of 2296	4844	RobloxTool2.45.exe	95
PID 4844 wrote to memory of 2296	4844	RobloxTool2.45.exe	95
PID 4844 wrote to memory of 2296	4844	RobloxTool2.45.exe	95

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 Enterprise v15

Reconnaissance

Resource Development

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

Command and Control

Exfiltration

Impact

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Downloads

tmp6ACB.tmp

Path C:\Users\Admin\AppData\Local\Temp\tmp6ACB.tmp
Size 1KB
SHA256 bd4af90cd9750d3930b417bbb917fa3573d386dcb068e5a1fdca4ae88ee02382
MD5 d5ff21d38f0e1018fc72aa2f55f011aa
SHA1 5ad2c2e8143cd0e0f6d7dcef7391ab572e3cea37
SHA512 43772bfed10631fc1ff65f85fa0d8afcd562da2bdf3178cb9cbc49aa2d6b075020900fd8f53af3f080330b8bad36b257a6a51ff6fb4ee20025a389a7c27610a2
MD5 SHA1 SHA512

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tmp6B58.tmp

Path C:\Users\Admin\AppData\Local\Temp\tmp6B58.tmp
Size 1KB
SHA256 3d568a47a8944a47f4aed6982755ac7ff7dda469cc1c81c213ecaa5d89de1f83
MD5 0339b45ef206f4becc88be0d65e24b9e
SHA1 6503a1851f4ccd8c80a31f96bd7ae40d962c9fad
SHA512 c98f4513db34d50510dd986e0d812545c442bd5bef26932032b165759627fab4e00c95fe907ab3416a8a1042bfa77aa516c479f1ff7d1ec2f21ae66df8f72551
MD5 SHA1 SHA512

Submit Download

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

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

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

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

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

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

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

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