437c8032e578d678d10379c25af38953c41821103fb2d7d25f6a229fdd2bec10

Analysis

max time kernel
153s
max time network
31s
platform
windows7_x64
resource
win7-20221111-en
resource tags

arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
submitted
13-02-2023 22:51

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General

Target

Borrador/Language/Spanish.lng
Size

7KB
MD5

c353d15b926e335dda7b58d6d31959f6
SHA1

d378fd4b8155592e50fbd04bc64206b1a032718e
SHA256

4c595cf20cb72696f429567f60a3da0ac81e6957b1e056918678da89d7d7d7e5
SHA512

5698b017e29d0fa775e36870b6ae80456978703d280475ebace9738cdaaefb737540a3ea950f85b59cdef3e7e7b4ba95c9be3b084d9e0a4cce23a53d9cd9646c
SSDEEP

96:rRAHPG8Dr2HuTXl1RHa+i7DTu7FQr4b8FKq7VDJ6oI78JpK5TyBPoUGdsLigqcEx:dAbDrlxa+TFZbfbGBs50E

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

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000_CLASSES\.lng\ = "lng_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000_CLASSES\lng_auto_file\shell\Read\command	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000_CLASSES\lng_auto_file	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\MuiCache	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000_CLASSES\lng_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000_CLASSES\.lng	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000_CLASSES\lng_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000_CLASSES\lng_auto_file\shell	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000_CLASSES\lng_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000_Classes\Local Settings	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
768	AcroRd32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
768	AcroRd32.exe
768	AcroRd32.exe
768	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 840 wrote to memory of 1508	840	cmd.exe	29
PID 840 wrote to memory of 1508	840	cmd.exe	29
PID 840 wrote to memory of 1508	840	cmd.exe	29
PID 1508 wrote to memory of 768	1508	rundll32.exe	30
PID 1508 wrote to memory of 768	1508	rundll32.exe	30
PID 1508 wrote to memory of 768	1508	rundll32.exe	30
PID 1508 wrote to memory of 768	1508	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\Borrador\Language\Spanish.lng
1⤵
- Suspicious use of WriteProcessMemory
PID:840
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\Borrador\Language\Spanish.lng
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:1508
- - 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\Borrador\Language\Spanish.lng"
    3⤵
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:768

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/768-82-0x0000000075FF1000-0x0000000075FF3000-memory.dmp

Filesize
8KB

Download
memory/840-54-0x000007FEFC4B1000-0x000007FEFC4B3000-memory.dmp

Filesize
8KB

Download