d312c079c51f2bf011902df86e1ca4cac84eb7c74ff104fa48a505caa88ef2fe

Analysis

max time kernel
71s
max time network
46s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
19-10-2022 18:24

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General

Target

challenge-files/challenge-files/2021-06-02-fake-gzip-file-from-supplementik.top.gz
Size

730KB
MD5

0208817d1a0a9bd2b5ba9bb87eb934d6
SHA1

ba190c8cfba453e163dc0035ece7d3a1c0c4e08f
SHA256

ea872a29ed2189432ff3f8ce807412eaa200928fadf9eb918518be5d5bd0ca1e
SHA512

2a4c26bee05c2d1f0e5629fa692d3bd41540e04dbc690604c050f72a03cab9bafff7dd4a7ae8587b59fed77211c1c1f278b6a3b860a0ec6c1846199a971174b5
SSDEEP

12288:yKKYkbSL7/TaiQmAyBkK2hA2nczTsoQ+g7GuFg5+GAoWv6RbrjUyHzvyTA:xK7SL6LmAyBk1A2nqBsGT5W6RbrjJzKA

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-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\MuiCache	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\gz_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\gz_auto_file\	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\.gz\ = "gz_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\gz_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\gz_auto_file\shell	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\gz_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\.gz	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\gz_auto_file\shell\Read\command	rundll32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

Processes:

AcroRd32.exe

pid process

576 AcroRd32.exe
576 AcroRd32.exe
576 AcroRd32.exe

pid	process
576	AcroRd32.exe
576	AcroRd32.exe
576	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

cmd.exerundll32.exe

description	pid	process	target process
PID 1832 wrote to memory of 2024	1832	cmd.exe	rundll32.exe
PID 1832 wrote to memory of 2024	1832	cmd.exe	rundll32.exe
PID 1832 wrote to memory of 2024	1832	cmd.exe	rundll32.exe
PID 2024 wrote to memory of 576	2024	rundll32.exe	AcroRd32.exe
PID 2024 wrote to memory of 576	2024	rundll32.exe	AcroRd32.exe
PID 2024 wrote to memory of 576	2024	rundll32.exe	AcroRd32.exe
PID 2024 wrote to memory of 576	2024	rundll32.exe	AcroRd32.exe

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\challenge-files\challenge-files\2021-06-02-fake-gzip-file-from-supplementik.top.gz
1⤵
- Suspicious use of WriteProcessMemory
PID:1832

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\2021-06-02-fake-gzip-file-from-supplementik.top.gz
2⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:2024

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\2021-06-02-fake-gzip-file-from-supplementik.top.gz"
3⤵
- Suspicious use of SetWindowsHookEx
PID:576

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/576-81-0x0000000000000000-mapping.dmp

Download
memory/576-82-0x0000000076401000-0x0000000076403000-memory.dmp

Filesize
8KB

Download
memory/1832-54-0x000007FEFC341000-0x000007FEFC343000-memory.dmp

Filesize
8KB

Download
memory/2024-76-0x0000000000000000-mapping.dmp

Download