d312c079c51f2bf011902df86e1ca4cac84eb7c74ff104fa48a505caa88ef2fe

Analysis

max time kernel
150s
max time network
46s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
24-10-2022 14:46

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General

Target

challenge-files/challenge-files/license.dat
Size

333KB
MD5

3c6263a9c4117c78d26fc4380af014f2
SHA1

eca410dd57af16227220e08067c1895c258eb92b
SHA256

29d2a8344bd725d7a8b43cc77a82b3db57a5226ce792ac4b37e7f73ec468510e
SHA512

0969cde0d327b9f4b2be708437aea2a1d7a9ba9482125e143ce25c6a2f07e8ee1fa9b23e12f4e88157305f59209e2a8b3a2b2e7eb143b114e3f0c95ba57a2e1a
SSDEEP

6144:zsBoiLlIorxTbp4o8x4It25elAQpB/lP3O21uZoXq8ZTipooUDFkPt8gi976D+se:YKIIMxTbp4otQAQpdl221U89ipTc4CRd

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-1-5-21-2292972927-2705560509-2768824231-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000_CLASSES\dat_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000_CLASSES\dat_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\MuiCache	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000_CLASSES\.dat	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000_CLASSES\.dat\ = "dat_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000_CLASSES\dat_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000_CLASSES\dat_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000_CLASSES\dat_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000_CLASSES\dat_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

Processes:

AcroRd32.exe

pid process

668 AcroRd32.exe
668 AcroRd32.exe
668 AcroRd32.exe

pid	process
668	AcroRd32.exe
668	AcroRd32.exe
668	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

cmd.exerundll32.exe

description	pid	process	target process
PID 1896 wrote to memory of 960	1896	cmd.exe	rundll32.exe
PID 1896 wrote to memory of 960	1896	cmd.exe	rundll32.exe
PID 1896 wrote to memory of 960	1896	cmd.exe	rundll32.exe
PID 960 wrote to memory of 668	960	rundll32.exe	AcroRd32.exe
PID 960 wrote to memory of 668	960	rundll32.exe	AcroRd32.exe
PID 960 wrote to memory of 668	960	rundll32.exe	AcroRd32.exe
PID 960 wrote to memory of 668	960	rundll32.exe	AcroRd32.exe

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\challenge-files\challenge-files\license.dat
1⤵
- Suspicious use of WriteProcessMemory
PID:1896

C:\Windows\system32\rundll32.exe
"C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\challenge-files\challenge-files\license.dat
2⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:960

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\challenge-files\challenge-files\license.dat"
3⤵
- Suspicious use of SetWindowsHookEx
PID:668

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/668-81-0x0000000000000000-mapping.dmp

Download
memory/668-82-0x0000000075201000-0x0000000075203000-memory.dmp

Filesize
8KB

Download
memory/960-76-0x0000000000000000-mapping.dmp

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memory/1896-54-0x000007FEFBDB1000-0x000007FEFBDB3000-memory.dmp

Filesize
8KB

Download