58e8cf2a77663a1ff5cc36aa9e0777ce952eaa258c9b8220cadb5a53bed89724

Analysis

max time kernel
150s
max time network
47s
platform
windows7_x64
resource
win7-20220901-en
resource tags

arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
submitted
05-02-2023 11:45

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General

Target

encodings/aliases.pyc
Size

10KB
MD5

6ed637d8773035426243f1142c5c80bd
SHA1

c2df5a52606d14bd322fd12e8b1eea9b8e31d0af
SHA256

2706fe0ba3620d9d2cc342c94e02e06f196f1d16436d0f1091237d6d4bebf30f
SHA512

47cde7148ae33d0eef6a5b94b2265762fd3c62e29640ee6f45cc23a488e5872f600a311f68bde541b0383b5223a9480983cec57a6680fd59533902260f739f95
SSDEEP

192:GX2eNkBweGfGkueK4+I14Xqb36RhOgaxL8PZm+/Qnu1iXFzxOkq4bpehh3qkyR0N:GXG0bueBU6uHc+Izx9IX6Ri

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-1-5-21-4063495947-34355257-727531523-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\MuiCache	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\pyc_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\.pyc	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\pyc_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\pyc_auto_file\shell\Read\command	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_Classes\Local Settings	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\.pyc\ = "pyc_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\pyc_auto_file\shell	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_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-1-5-21-4063495947-34355257-727531523-1000_CLASSES\pyc_auto_file	rundll32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

Processes:

AcroRd32.exe

pid process

1772 AcroRd32.exe
1772 AcroRd32.exe
1772 AcroRd32.exe

pid	process
1772	AcroRd32.exe
1772	AcroRd32.exe
1772	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

cmd.exerundll32.exe

description	pid	process	target process
PID 1284 wrote to memory of 1428	1284	cmd.exe	rundll32.exe
PID 1284 wrote to memory of 1428	1284	cmd.exe	rundll32.exe
PID 1284 wrote to memory of 1428	1284	cmd.exe	rundll32.exe
PID 1428 wrote to memory of 1772	1428	rundll32.exe	AcroRd32.exe
PID 1428 wrote to memory of 1772	1428	rundll32.exe	AcroRd32.exe
PID 1428 wrote to memory of 1772	1428	rundll32.exe	AcroRd32.exe
PID 1428 wrote to memory of 1772	1428	rundll32.exe	AcroRd32.exe

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\encodings\aliases.pyc
1⤵
- Suspicious use of WriteProcessMemory
PID:1284

C:\Windows\system32\rundll32.exe
"C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\encodings\aliases.pyc
2⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:1428

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\aliases.pyc"
3⤵
- Suspicious use of SetWindowsHookEx
PID:1772

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/1284-54-0x000007FEFB621000-0x000007FEFB623000-memory.dmp

Filesize
8KB

Download
memory/1428-76-0x0000000000000000-mapping.dmp

Download
memory/1772-81-0x0000000000000000-mapping.dmp

Download
memory/1772-82-0x0000000075931000-0x0000000075933000-memory.dmp

Filesize
8KB

Download