7f3a5d89cabb8cb6a5954d175ec66cbd48391fcd3b628ac53d5af409428a8925

General

Target

7f3a5d89cabb8cb6a5954d175ec66cbd48391fcd3b628ac53d5af409428a8925.exe
Size

292KB
MD5

451383b8da4b56ce325015420e63f7f0
SHA1

0bea16f07b32750348c0610595d59c69e2192a7c
SHA256

7f3a5d89cabb8cb6a5954d175ec66cbd48391fcd3b628ac53d5af409428a8925
SHA512

31e37e99ed3b7f3ebc646d438f86c28f08170cf33489ac2e2f969d2999d342922b1528bdfb8315f216c341b92188294ab25527348cea42fe0c63f7ae88980867
SSDEEP

6144:CaczcnqtrZjQCBBvfmge2uXOyDDaX66UEbuGHAceNEFKLrLRKD7ucfnxh4B7yCJY:Ca7nqtti9K5CooEeOnioN

Score

10^/10

evasion persistence

Malware Config

Signatures

Modifies visiblity of hidden/system files in Explorer 2 TTPs 2 IoCs

evasion

Hidden Files and Directories

T1158

Modify Registry

T1112

Processes:

7f3a5d89cabb8cb6a5954d175ec66cbd48391fcd3b628ac53d5af409428a8925.exenuuoc.exe

description	ioc	process
Set value (int)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	7f3a5d89cabb8cb6a5954d175ec66cbd48391fcd3b628ac53d5af409428a8925.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	nuuoc.exe

Executes dropped EXE 1 IoCs

Processes:

nuuoc.exe

pid process

4108 nuuoc.exe

pid	process
4108	nuuoc.exe

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:

7f3a5d89cabb8cb6a5954d175ec66cbd48391fcd3b628ac53d5af409428a8925.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation	7f3a5d89cabb8cb6a5954d175ec66cbd48391fcd3b628ac53d5af409428a8925.exe

Adds Run key to start application 2 TTPs 24 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

nuuoc.exe7f3a5d89cabb8cb6a5954d175ec66cbd48391fcd3b628ac53d5af409428a8925.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\nuuoc = "C:\\Users\\Admin\\nuuoc.exe /m"	nuuoc.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\nuuoc = "C:\\Users\\Admin\\nuuoc.exe /w"	nuuoc.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\nuuoc = "C:\\Users\\Admin\\nuuoc.exe /x"	nuuoc.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\nuuoc = "C:\\Users\\Admin\\nuuoc.exe /p"	nuuoc.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\nuuoc = "C:\\Users\\Admin\\nuuoc.exe /h"	nuuoc.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\nuuoc = "C:\\Users\\Admin\\nuuoc.exe /l"	nuuoc.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\nuuoc = "C:\\Users\\Admin\\nuuoc.exe /o"	nuuoc.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\nuuoc = "C:\\Users\\Admin\\nuuoc.exe /i"	nuuoc.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\nuuoc = "C:\\Users\\Admin\\nuuoc.exe /y"	nuuoc.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\nuuoc = "C:\\Users\\Admin\\nuuoc.exe /j"	nuuoc.exe
Key created	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Windows\CurrentVersion\Run\	7f3a5d89cabb8cb6a5954d175ec66cbd48391fcd3b628ac53d5af409428a8925.exe
Key created	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Windows\CurrentVersion\Run\	nuuoc.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\nuuoc = "C:\\Users\\Admin\\nuuoc.exe /b"	nuuoc.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\nuuoc = "C:\\Users\\Admin\\nuuoc.exe /t"	nuuoc.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\nuuoc = "C:\\Users\\Admin\\nuuoc.exe /u"	nuuoc.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\nuuoc = "C:\\Users\\Admin\\nuuoc.exe /r"	7f3a5d89cabb8cb6a5954d175ec66cbd48391fcd3b628ac53d5af409428a8925.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\nuuoc = "C:\\Users\\Admin\\nuuoc.exe /a"	nuuoc.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\nuuoc = "C:\\Users\\Admin\\nuuoc.exe /q"	nuuoc.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\nuuoc = "C:\\Users\\Admin\\nuuoc.exe /n"	nuuoc.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\nuuoc = "C:\\Users\\Admin\\nuuoc.exe /r"	nuuoc.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\nuuoc = "C:\\Users\\Admin\\nuuoc.exe /s"	nuuoc.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\nuuoc = "C:\\Users\\Admin\\nuuoc.exe /f"	nuuoc.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\nuuoc = "C:\\Users\\Admin\\nuuoc.exe /e"	nuuoc.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\nuuoc = "C:\\Users\\Admin\\nuuoc.exe /c"	nuuoc.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

7f3a5d89cabb8cb6a5954d175ec66cbd48391fcd3b628ac53d5af409428a8925.exenuuoc.exe

pid	process
4868	7f3a5d89cabb8cb6a5954d175ec66cbd48391fcd3b628ac53d5af409428a8925.exe
4868	7f3a5d89cabb8cb6a5954d175ec66cbd48391fcd3b628ac53d5af409428a8925.exe
4108	nuuoc.exe
4108	nuuoc.exe
4108	nuuoc.exe
4108	nuuoc.exe
4108	nuuoc.exe
4108	nuuoc.exe
4108	nuuoc.exe
4108	nuuoc.exe
4108	nuuoc.exe
4108	nuuoc.exe
4108	nuuoc.exe
4108	nuuoc.exe
4108	nuuoc.exe
4108	nuuoc.exe
4108	nuuoc.exe
4108	nuuoc.exe
4108	nuuoc.exe
4108	nuuoc.exe
4108	nuuoc.exe
4108	nuuoc.exe
4108	nuuoc.exe
4108	nuuoc.exe
4108	nuuoc.exe
4108	nuuoc.exe
4108	nuuoc.exe
4108	nuuoc.exe
4108	nuuoc.exe
4108	nuuoc.exe
4108	nuuoc.exe
4108	nuuoc.exe
4108	nuuoc.exe
4108	nuuoc.exe
4108	nuuoc.exe
4108	nuuoc.exe
4108	nuuoc.exe
4108	nuuoc.exe
4108	nuuoc.exe
4108	nuuoc.exe
4108	nuuoc.exe
4108	nuuoc.exe
4108	nuuoc.exe
4108	nuuoc.exe
4108	nuuoc.exe
4108	nuuoc.exe
4108	nuuoc.exe
4108	nuuoc.exe
4108	nuuoc.exe
4108	nuuoc.exe
4108	nuuoc.exe
4108	nuuoc.exe
4108	nuuoc.exe
4108	nuuoc.exe
4108	nuuoc.exe
4108	nuuoc.exe
4108	nuuoc.exe
4108	nuuoc.exe
4108	nuuoc.exe
4108	nuuoc.exe
4108	nuuoc.exe
4108	nuuoc.exe
4108	nuuoc.exe
4108	nuuoc.exe

Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

7f3a5d89cabb8cb6a5954d175ec66cbd48391fcd3b628ac53d5af409428a8925.exenuuoc.exe

pid process

4868 7f3a5d89cabb8cb6a5954d175ec66cbd48391fcd3b628ac53d5af409428a8925.exe
4108 nuuoc.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

7f3a5d89cabb8cb6a5954d175ec66cbd48391fcd3b628ac53d5af409428a8925.exe

description	pid	process	target process
PID 4868 wrote to memory of 4108	4868	7f3a5d89cabb8cb6a5954d175ec66cbd48391fcd3b628ac53d5af409428a8925.exe	nuuoc.exe
PID 4868 wrote to memory of 4108	4868	7f3a5d89cabb8cb6a5954d175ec66cbd48391fcd3b628ac53d5af409428a8925.exe	nuuoc.exe
PID 4868 wrote to memory of 4108	4868	7f3a5d89cabb8cb6a5954d175ec66cbd48391fcd3b628ac53d5af409428a8925.exe	nuuoc.exe

C:\Users\Admin\AppData\Local\Temp\7f3a5d89cabb8cb6a5954d175ec66cbd48391fcd3b628ac53d5af409428a8925.exe
"C:\Users\Admin\AppData\Local\Temp\7f3a5d89cabb8cb6a5954d175ec66cbd48391fcd3b628ac53d5af409428a8925.exe"
1⤵
- Modifies visiblity of hidden/system files in Explorer
- Checks computer location settings
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4868

C:\Users\Admin\nuuoc.exe
"C:\Users\Admin\nuuoc.exe"
2⤵
- Modifies visiblity of hidden/system files in Explorer
- Executes dropped EXE
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
PID:4108

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Hidden Files and Directories

1

T1158

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Hidden Files and Directories

1

T1158

Modify Registry

2

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\nuuoc.exe
Filesize
292KB

MD5
67685ece7f6a3e4e57c458808b015dc9

SHA1
1e9c0237700b0c775e20348df2f97152efed25ac

SHA256
2d58113267e7cf58386809ac3d084569e06c6504d9c584c61dcb63d7cd30c8e7

SHA512
712da936bcec4fe6ddc6283523754953dbedaa28e679a64db9d44f06e9b1edd22b7ee185ecdbe64eae5892d30eb721f663da2f313544090a10b595323ccd5c4e

Download Submit
C:\Users\Admin\nuuoc.exe
Filesize
292KB

MD5
67685ece7f6a3e4e57c458808b015dc9

SHA1
1e9c0237700b0c775e20348df2f97152efed25ac

SHA256
2d58113267e7cf58386809ac3d084569e06c6504d9c584c61dcb63d7cd30c8e7

SHA512
712da936bcec4fe6ddc6283523754953dbedaa28e679a64db9d44f06e9b1edd22b7ee185ecdbe64eae5892d30eb721f663da2f313544090a10b595323ccd5c4e

Download Submit
memory/4108-135-0x0000000000000000-mapping.dmp

Download
memory/4108-140-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/4868-134-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads