f8e2fb1d7398fed7e143a30d5214ae87c835f41878deab413710a7c877cf9fc4

General

Target

f8e2fb1d7398fed7e143a30d5214ae87c835f41878deab413710a7c877cf9fc4.exe
Size

236KB
MD5

571b029db85a310dac5d7f7812612e52
SHA1

2b35f677215061778e23be1004d280e6e10942c8
SHA256

f8e2fb1d7398fed7e143a30d5214ae87c835f41878deab413710a7c877cf9fc4
SHA512

ad501cc8920e87304d1edd0245e1a09ab0fc73dc8d6e6bd3c41f2c7027643fef5b1b3d88da428f45dde11010364982d9b7f92718df19f8dd745baa0ee1ddfe26
SSDEEP

3072:NdNhROjlwKzzGKXWr8oYLVp0uP5cPLa6KMWM+x2rfdnpcJMyaegtmNZW6g4Y:Nt1mzGkoYZpDPCPLa64fmdK+dtCe

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:

f8e2fb1d7398fed7e143a30d5214ae87c835f41878deab413710a7c877cf9fc4.exebuvuc.exe

description	ioc	process
Set value (int)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	f8e2fb1d7398fed7e143a30d5214ae87c835f41878deab413710a7c877cf9fc4.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	buvuc.exe

Executes dropped EXE 1 IoCs

Processes:

buvuc.exe

pid process

2116 buvuc.exe

pid	process
2116	buvuc.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:

f8e2fb1d7398fed7e143a30d5214ae87c835f41878deab413710a7c877cf9fc4.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation	f8e2fb1d7398fed7e143a30d5214ae87c835f41878deab413710a7c877cf9fc4.exe

Adds Run key to start application 2 TTPs 29 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

buvuc.exef8e2fb1d7398fed7e143a30d5214ae87c835f41878deab413710a7c877cf9fc4.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\buvuc = "C:\\Users\\Admin\\buvuc.exe /j"	buvuc.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\buvuc = "C:\\Users\\Admin\\buvuc.exe /u"	buvuc.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\buvuc = "C:\\Users\\Admin\\buvuc.exe /g"	buvuc.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\buvuc = "C:\\Users\\Admin\\buvuc.exe /v"	buvuc.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\buvuc = "C:\\Users\\Admin\\buvuc.exe /f"	buvuc.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\buvuc = "C:\\Users\\Admin\\buvuc.exe /h"	buvuc.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\buvuc = "C:\\Users\\Admin\\buvuc.exe /s"	buvuc.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\buvuc = "C:\\Users\\Admin\\buvuc.exe /q"	buvuc.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\buvuc = "C:\\Users\\Admin\\buvuc.exe /y"	buvuc.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\buvuc = "C:\\Users\\Admin\\buvuc.exe /p"	buvuc.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\buvuc = "C:\\Users\\Admin\\buvuc.exe /z"	buvuc.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\buvuc = "C:\\Users\\Admin\\buvuc.exe /c"	buvuc.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\buvuc = "C:\\Users\\Admin\\buvuc.exe /o"	buvuc.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\buvuc = "C:\\Users\\Admin\\buvuc.exe /r"	buvuc.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\buvuc = "C:\\Users\\Admin\\buvuc.exe /b"	buvuc.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\buvuc = "C:\\Users\\Admin\\buvuc.exe /w"	buvuc.exe
Key created	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Windows\CurrentVersion\Run\	f8e2fb1d7398fed7e143a30d5214ae87c835f41878deab413710a7c877cf9fc4.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\buvuc = "C:\\Users\\Admin\\buvuc.exe /k"	buvuc.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\buvuc = "C:\\Users\\Admin\\buvuc.exe /n"	buvuc.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\buvuc = "C:\\Users\\Admin\\buvuc.exe /x"	buvuc.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\buvuc = "C:\\Users\\Admin\\buvuc.exe /z"	f8e2fb1d7398fed7e143a30d5214ae87c835f41878deab413710a7c877cf9fc4.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\buvuc = "C:\\Users\\Admin\\buvuc.exe /t"	buvuc.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\buvuc = "C:\\Users\\Admin\\buvuc.exe /m"	buvuc.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\buvuc = "C:\\Users\\Admin\\buvuc.exe /e"	buvuc.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\buvuc = "C:\\Users\\Admin\\buvuc.exe /a"	buvuc.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\buvuc = "C:\\Users\\Admin\\buvuc.exe /i"	buvuc.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\buvuc = "C:\\Users\\Admin\\buvuc.exe /d"	buvuc.exe
Key created	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Windows\CurrentVersion\Run\	buvuc.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\buvuc = "C:\\Users\\Admin\\buvuc.exe /l"	buvuc.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:

f8e2fb1d7398fed7e143a30d5214ae87c835f41878deab413710a7c877cf9fc4.exebuvuc.exe

pid	process
3976	f8e2fb1d7398fed7e143a30d5214ae87c835f41878deab413710a7c877cf9fc4.exe
3976	f8e2fb1d7398fed7e143a30d5214ae87c835f41878deab413710a7c877cf9fc4.exe
2116	buvuc.exe
2116	buvuc.exe
2116	buvuc.exe
2116	buvuc.exe
2116	buvuc.exe
2116	buvuc.exe
2116	buvuc.exe
2116	buvuc.exe
2116	buvuc.exe
2116	buvuc.exe
2116	buvuc.exe
2116	buvuc.exe
2116	buvuc.exe
2116	buvuc.exe
2116	buvuc.exe
2116	buvuc.exe
2116	buvuc.exe
2116	buvuc.exe
2116	buvuc.exe
2116	buvuc.exe
2116	buvuc.exe
2116	buvuc.exe
2116	buvuc.exe
2116	buvuc.exe
2116	buvuc.exe
2116	buvuc.exe
2116	buvuc.exe
2116	buvuc.exe
2116	buvuc.exe
2116	buvuc.exe
2116	buvuc.exe
2116	buvuc.exe
2116	buvuc.exe
2116	buvuc.exe
2116	buvuc.exe
2116	buvuc.exe
2116	buvuc.exe
2116	buvuc.exe
2116	buvuc.exe
2116	buvuc.exe
2116	buvuc.exe
2116	buvuc.exe
2116	buvuc.exe
2116	buvuc.exe
2116	buvuc.exe
2116	buvuc.exe
2116	buvuc.exe
2116	buvuc.exe
2116	buvuc.exe
2116	buvuc.exe
2116	buvuc.exe
2116	buvuc.exe
2116	buvuc.exe
2116	buvuc.exe
2116	buvuc.exe
2116	buvuc.exe
2116	buvuc.exe
2116	buvuc.exe
2116	buvuc.exe
2116	buvuc.exe
2116	buvuc.exe
2116	buvuc.exe

Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

f8e2fb1d7398fed7e143a30d5214ae87c835f41878deab413710a7c877cf9fc4.exebuvuc.exe

pid process

3976 f8e2fb1d7398fed7e143a30d5214ae87c835f41878deab413710a7c877cf9fc4.exe
2116 buvuc.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

f8e2fb1d7398fed7e143a30d5214ae87c835f41878deab413710a7c877cf9fc4.exe

description	pid	process	target process
PID 3976 wrote to memory of 2116	3976	f8e2fb1d7398fed7e143a30d5214ae87c835f41878deab413710a7c877cf9fc4.exe	buvuc.exe
PID 3976 wrote to memory of 2116	3976	f8e2fb1d7398fed7e143a30d5214ae87c835f41878deab413710a7c877cf9fc4.exe	buvuc.exe
PID 3976 wrote to memory of 2116	3976	f8e2fb1d7398fed7e143a30d5214ae87c835f41878deab413710a7c877cf9fc4.exe	buvuc.exe

C:\Users\Admin\AppData\Local\Temp\f8e2fb1d7398fed7e143a30d5214ae87c835f41878deab413710a7c877cf9fc4.exe
"C:\Users\Admin\AppData\Local\Temp\f8e2fb1d7398fed7e143a30d5214ae87c835f41878deab413710a7c877cf9fc4.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:3976

C:\Users\Admin\buvuc.exe
"C:\Users\Admin\buvuc.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:2116

Network

MITRE ATT&CK Enterprise 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

Modify Registry

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\buvuc.exe

Filesize
236KB

MD5
0d2f1d1927a3664286482f275af81300

SHA1
f534141eae4acf54f6c8de31998b3fea0c8470d3

SHA256
517285786de1873eeaf0ae59eb13f9403e59febcf668bba47a5510ac7ef33af0

SHA512
15260123b79a9c1a330d567449df4a8bdcd283d96b6fc282c2081a040a1fa0c17d602137eb6f96cd411a52d90eadee8693a6bb496dcf04d03e27dd72d677b24e

Download Submit
C:\Users\Admin\buvuc.exe

Filesize
236KB

MD5
0d2f1d1927a3664286482f275af81300

SHA1
f534141eae4acf54f6c8de31998b3fea0c8470d3

SHA256
517285786de1873eeaf0ae59eb13f9403e59febcf668bba47a5510ac7ef33af0

SHA512
15260123b79a9c1a330d567449df4a8bdcd283d96b6fc282c2081a040a1fa0c17d602137eb6f96cd411a52d90eadee8693a6bb496dcf04d03e27dd72d677b24e

Download Submit
memory/2116-135-0x0000000000000000-mapping.dmp

Download
memory/2116-140-0x0000000000400000-0x0000000000457000-memory.dmp

Filesize
348KB

Download
memory/2116-142-0x0000000000400000-0x0000000000457000-memory.dmp

Filesize
348KB

Download
memory/3976-132-0x0000000000400000-0x0000000000457000-memory.dmp

Filesize
348KB

Download
memory/3976-141-0x0000000000400000-0x0000000000457000-memory.dmp

Filesize
348KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads