fb2e466347b6a320ce7923193accfe2865a71833e3f28f82314528aaeff0124a

Analysis

max time kernel
150s
max time network
49s
platform
windows7_x64
resource
win7-20220901-en
resource tags

arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
submitted
20-10-2022 21:30

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General

Target

README.md
Size

163B
MD5

54b7f56eb14bea717f2d2c4699baf95a
SHA1

474ebec38927e11a7434244a2cfa73ae0c6d4f10
SHA256

afc5b698458955ac01dd0fb33fb06fe1a46484051f2c4cfc3b340074908ac986
SHA512

6fe17365eb3ce92912ddf3f8082f7d7f93c0de56a65abb64d3c8867e6cc83f9dd190e9d40f4f84b1801f60235d021fa7d452fdc6506ccf96d663212aa66f2c75

Score

3^/10

Malware Config

Signatures

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

System Information Discovery
T1082

Modifies registry class 10 IoCs

Processes:

rundll32.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\md_auto_file\shell\Read\command	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\md_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\md_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\md_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\md_auto_file\shell	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\md_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\MuiCache	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\.md	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\.md\ = "md_auto_file"	rundll32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

Processes:

AcroRd32.exe

pid process

1056 AcroRd32.exe
1056 AcroRd32.exe
1056 AcroRd32.exe

pid	process
1056	AcroRd32.exe
1056	AcroRd32.exe
1056	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

cmd.exerundll32.exe

description	pid	process	target process
PID 1600 wrote to memory of 952	1600	cmd.exe	rundll32.exe
PID 1600 wrote to memory of 952	1600	cmd.exe	rundll32.exe
PID 1600 wrote to memory of 952	1600	cmd.exe	rundll32.exe
PID 952 wrote to memory of 1056	952	rundll32.exe	AcroRd32.exe
PID 952 wrote to memory of 1056	952	rundll32.exe	AcroRd32.exe
PID 952 wrote to memory of 1056	952	rundll32.exe	AcroRd32.exe
PID 952 wrote to memory of 1056	952	rundll32.exe	AcroRd32.exe

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\README.md
1⤵
- Suspicious use of WriteProcessMemory
PID:1600

C:\Windows\system32\rundll32.exe
"C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\README.md
2⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:952

C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe
"C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe" "C:\Users\Admin\AppData\Local\Temp\README.md"
3⤵
- Suspicious use of SetWindowsHookEx
PID:1056

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/952-76-0x0000000000000000-mapping.dmp

Download
memory/1056-81-0x0000000000000000-mapping.dmp

Download
memory/1056-82-0x0000000076461000-0x0000000076463000-memory.dmp

Filesize
8KB

Download
memory/1600-54-0x000007FEFBB51000-0x000007FEFBB53000-memory.dmp

Filesize
8KB

Download