9fc4e43929368cd9f3fff81b94d9a3fc5f9f4035f1e11ba7a16763ab4d1d9d2a

Resubmissions

28-05-2024 08:41

240528-klen9adh94 7

28-05-2024 08:34

240528-kgp97acg2z 7

Analysis

max time kernel
7s
max time network
10s
platform
windows7_x64
resource
win7-20240220-en
resource tags

arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
submitted
28-05-2024 08:41

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General

Target

cstealer.pyc
Size

67KB
MD5

036d49d6b35dfb6f43e6ce66f6cb329b
SHA1

d5dd66bbb5edaac5576e640af3c04c938052577d
SHA256

85689213b1f1c5341f004a21795ed7ec063e1805d41dc7716fc5367ed6053943
SHA512

b86d6cc29691d46d625924b4528cd174bdf9f2060a82028c2a88baa0567796c40179566324b37006515c66698f441e89c17f561da8ea431970940f937ff8d7c9
SSDEEP

1536:l0xqOgTxpqBJlMstbo88jLQQcXf9qS0Vr+LRheG:lqc/+bo88PiXX0r+LRP

Score

3^/10

Malware Config

Signatures

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

System Information Discovery
T1082

Modifies registry class 9 IoCs

Processes:

rundll32.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000_Classes\Local Settings	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000_CLASSES\pyc_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000_CLASSES\pyc_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000_CLASSES\pyc_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000_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-1-5-21-2721934792-624042501-2768869379-1000_CLASSES\pyc_auto_file	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000_CLASSES\.pyc	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000_CLASSES\.pyc\ = "pyc_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000_CLASSES\pyc_auto_file\shell\Read	rundll32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

AcroRd32.exe

pid process

852 AcroRd32.exe
852 AcroRd32.exe

pid	process
852	AcroRd32.exe
852	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

cmd.exerundll32.exe

description	pid	process	target process
PID 1684 wrote to memory of 2096	1684	cmd.exe	rundll32.exe
PID 1684 wrote to memory of 2096	1684	cmd.exe	rundll32.exe
PID 1684 wrote to memory of 2096	1684	cmd.exe	rundll32.exe
PID 2096 wrote to memory of 852	2096	rundll32.exe	AcroRd32.exe
PID 2096 wrote to memory of 852	2096	rundll32.exe	AcroRd32.exe
PID 2096 wrote to memory of 852	2096	rundll32.exe	AcroRd32.exe
PID 2096 wrote to memory of 852	2096	rundll32.exe	AcroRd32.exe

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\cstealer.pyc
1⤵
- Suspicious use of WriteProcessMemory
PID:1684

C:\Windows\system32\rundll32.exe
"C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\cstealer.pyc
2⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:2096

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\cstealer.pyc"
3⤵
- Suspicious use of SetWindowsHookEx
PID:852

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Resubmissions

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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