58e8cf2a77663a1ff5cc36aa9e0777ce952eaa258c9b8220cadb5a53bed89724

Analysis

max time kernel
151s
max time network
30s
platform
windows7_x64
resource
win7-20221111-en
resource tags

arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
submitted
05-02-2023 11:45

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General

Target

encodings/__init__.pyc
Size

3KB
MD5

45932999f233ee5c9161684130411b6b
SHA1

b4d82791a06bdd1587bed1dfbf9b37fbb055b95d
SHA256

9cf668b5fc1277a8c6c0716de1b5a46be187881b5bb2a5a450ece42941165176
SHA512

0536d4f08d58f553721cea65c35c0e9b84f18be66b6be5504184a402172c08b1ece6fb2f0c322ee1b00afc8d4fc90193834ba33e3b56bb01cf87fbc2891d2fd1

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-1-5-21-3406023954-474543476-3319432036-1000_CLASSES\pyc_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000_CLASSES\pyc_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000_Classes\Local Settings	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000_CLASSES\pyc_auto_file\	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000_CLASSES\.pyc\ = "pyc_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000_CLASSES\pyc_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000_CLASSES\pyc_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\MuiCache	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000_CLASSES\pyc_auto_file	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000_CLASSES\.pyc	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

AcroRd32.exe

pid process

1752 AcroRd32.exe
Suspicious use of SetWindowsHookEx 3 IoCs

Processes:

AcroRd32.exe

pid process

1752 AcroRd32.exe
1752 AcroRd32.exe
1752 AcroRd32.exe

pid	process
1752	AcroRd32.exe

pid	process
1752	AcroRd32.exe
1752	AcroRd32.exe
1752	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

cmd.exerundll32.exe

description	pid	process	target process
PID 1996 wrote to memory of 1396	1996	cmd.exe	rundll32.exe
PID 1996 wrote to memory of 1396	1996	cmd.exe	rundll32.exe
PID 1996 wrote to memory of 1396	1996	cmd.exe	rundll32.exe
PID 1396 wrote to memory of 1752	1396	rundll32.exe	AcroRd32.exe
PID 1396 wrote to memory of 1752	1396	rundll32.exe	AcroRd32.exe
PID 1396 wrote to memory of 1752	1396	rundll32.exe	AcroRd32.exe
PID 1396 wrote to memory of 1752	1396	rundll32.exe	AcroRd32.exe

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\encodings\__init__.pyc
1⤵
- Suspicious use of WriteProcessMemory
PID:1996

C:\Windows\system32\rundll32.exe
"C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\encodings\__init__.pyc
2⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:1396

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\encodings\__init__.pyc"
3⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of SetWindowsHookEx
PID:1752

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/1396-76-0x0000000000000000-mapping.dmp

Download
memory/1752-81-0x0000000000000000-mapping.dmp

Download
memory/1752-82-0x0000000075D61000-0x0000000075D63000-memory.dmp

Filesize
8KB

Download
memory/1996-54-0x000007FEFB5F1000-0x000007FEFB5F3000-memory.dmp

Filesize
8KB

Download