fb5deefac6d0f45283b29b0297d22028557b870a8418f2123cb65462e03c19d9

Analysis

max time kernel
140s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20230831-en
resource tags

arch:x64arch:x86image:win10v2004-20230831-enlocale:en-usos:windows10-2004-x64system
submitted
15/09/2023, 05:03

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General

Target
suricata.rules
Size 25.4MB
Sample230915-fpwpqagh4v
SHA256 fb5deefac6d0f45283b29b0297d22028557b870a8418f2123cb65462e03c19d9
MD5 22f137b767de241e756bc92e7cd76f10
SHA1 357bce3c828226c34591a6b4c498b2cfc41d4220
SHA512 6ec2d17dde29a8e10bdf0f00513add86006f706c2bdf546b6c65ca580e3ee0ffe80575951aa850d8ad3ca2cbd8a2535c54a654043726e843cdaff6d3f88d0994
SSDEEP 49152:1Cqr1WcSp+ay41maAVV5a/byT9Lm1eTNzi0cUIB70jeRf2nr4Z8TiKQVkCHNSAOo:4YaTyckEVkCHNSAaC6c
MD5 SHA1 SHA512 SSDEEP

Score

3^/10

Malware Config

Signatures

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

System Information Discovery
T1082

Modifies registry class 14 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2848203831-2014322062-3611574811-1000_Classes\Local Settings	cmd.exe
Key created	\REGISTRY\USER\S-1-5-21-2848203831-2014322062-3611574811-1000_Classes\.rules	OpenWith.exe
Key created	\REGISTRY\USER\S-1-5-21-2848203831-2014322062-3611574811-1000_Classes\rules_auto_file	OpenWith.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2848203831-2014322062-3611574811-1000_Classes\.rules\ = "rules_auto_file"	OpenWith.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2848203831-2014322062-3611574811-1000_Classes\rules_auto_file\shell\open\command\ = "%SystemRoot%\\system32\\NOTEPAD.EXE %1"	OpenWith.exe
Key created	\REGISTRY\USER\S-1-5-21-2848203831-2014322062-3611574811-1000_Classes\䆟縀䆁	OpenWith.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2848203831-2014322062-3611574811-1000_Classes\䆟縀䆁\ = "rules_auto_file"	OpenWith.exe
Key created	\REGISTRY\USER\S-1-5-21-2848203831-2014322062-3611574811-1000_Classes\rules_auto_file\shell\edit\command	OpenWith.exe
Key created	\REGISTRY\USER\S-1-5-21-2848203831-2014322062-3611574811-1000_Classes\rules_auto_file\shell\open	OpenWith.exe
Key created	\REGISTRY\USER\S-1-5-21-2848203831-2014322062-3611574811-1000_Classes\Local Settings	OpenWith.exe
Key created	\REGISTRY\USER\S-1-5-21-2848203831-2014322062-3611574811-1000_Classes\rules_auto_file\shell\edit	OpenWith.exe
Key created	\REGISTRY\USER\S-1-5-21-2848203831-2014322062-3611574811-1000_Classes\rules_auto_file\shell	OpenWith.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2848203831-2014322062-3611574811-1000_Classes\rules_auto_file\shell\edit\command\ = "%SystemRoot%\\system32\\NOTEPAD.EXE %1"	OpenWith.exe
Key created	\REGISTRY\USER\S-1-5-21-2848203831-2014322062-3611574811-1000_Classes\rules_auto_file\shell\open\command	OpenWith.exe

Opens file in notepad (likely ransom note) 1 IoCs

ransomware

pid	Process
1980	NOTEPAD.EXE

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2456	OpenWith.exe

Suspicious use of SetWindowsHookEx 17 IoCs

pid	Process
2456	OpenWith.exe
2456	OpenWith.exe
2456	OpenWith.exe
2456	OpenWith.exe
2456	OpenWith.exe
2456	OpenWith.exe
2456	OpenWith.exe
2456	OpenWith.exe
2456	OpenWith.exe
2456	OpenWith.exe
2456	OpenWith.exe
2456	OpenWith.exe
2456	OpenWith.exe
2456	OpenWith.exe
2456	OpenWith.exe
2456	OpenWith.exe
2456	OpenWith.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 2456 wrote to memory of 1980	2456	OpenWith.exe	106
PID 2456 wrote to memory of 1980	2456	OpenWith.exe	106

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\suricata.rules
1⤵
- Modifies registry class
PID:4156

C:\Windows\system32\OpenWith.exe
C:\Windows\system32\OpenWith.exe -Embedding
1⤵
- Modifies registry class
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2456
- C:\Windows\system32\NOTEPAD.EXE
  "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Local\Temp\suricata.rules
  2⤵
  - Opens file in notepad (likely ransom note)
  PID:1980

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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