1fce3f6211996da0e3be88ffda9d78eeedf0acf7b55fbe67c52fd5764845110d

Analysis

max time kernel
151s
max time network
51s
platform
windows7_x64
resource
win7-20220414-en
submitted
03-07-2022 17:36

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General

Target

data/java/javapayload/stage/Shell.class
Size

1KB
MD5

aa461f60b4739ff79b3394d2e628821c
SHA1

6ff1345917c18cf6bf21c26deac405989d46fce8
SHA256

211bf53e92ee841ad611902731f7b29a97ef45db2238d2464112cb23540af396
SHA512

1c8386b02315470fe7f0a14932ca84b46cbd6beb1c24bc8d4890bdfaab58ade876e0750a72f1678cb824b880da662c40c1abd03897759f2b87be62d58bbfd8b2

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-1-5-21-1083475884-596052423-1669053738-1000_CLASSES\class_auto_file	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000_CLASSES\.class	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000_CLASSES\class_auto_file\shell\Read	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000_CLASSES\class_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000_CLASSES\class_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000_CLASSES\class_auto_file\shell\Read\command	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\MuiCache	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000_CLASSES\class_auto_file\	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000_CLASSES\.class\ = "class_auto_file"	rundll32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

AcroRd32.exe

pid process

568 AcroRd32.exe
568 AcroRd32.exe

pid	process
568	AcroRd32.exe
568	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

cmd.exerundll32.exe

description	pid	process	target process
PID 1304 wrote to memory of 1152	1304	cmd.exe	rundll32.exe
PID 1304 wrote to memory of 1152	1304	cmd.exe	rundll32.exe
PID 1304 wrote to memory of 1152	1304	cmd.exe	rundll32.exe
PID 1152 wrote to memory of 568	1152	rundll32.exe	AcroRd32.exe
PID 1152 wrote to memory of 568	1152	rundll32.exe	AcroRd32.exe
PID 1152 wrote to memory of 568	1152	rundll32.exe	AcroRd32.exe
PID 1152 wrote to memory of 568	1152	rundll32.exe	AcroRd32.exe

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\data\java\javapayload\stage\Shell.class
1⤵
- Suspicious use of WriteProcessMemory
PID:1304

C:\Windows\system32\rundll32.exe
"C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\data\java\javapayload\stage\Shell.class
2⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:1152

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\data\java\javapayload\stage\Shell.class"
3⤵
- Suspicious use of SetWindowsHookEx
PID:568

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

memory/568-81-0x0000000000000000-mapping.dmp

Download
memory/568-82-0x0000000076531000-0x0000000076533000-memory.dmp

Filesize
8KB

Download
memory/1152-76-0x0000000000000000-mapping.dmp

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memory/1304-54-0x000007FEFBFB1000-0x000007FEFBFB3000-memory.dmp

Filesize
8KB

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