437c8032e578d678d10379c25af38953c41821103fb2d7d25f6a229fdd2bec10

Analysis

max time kernel
150s
max time network
33s
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/English.lng
Size

6KB
MD5

083620520c4fb96da4eb5c102a3ea84e
SHA1

9df10ac766a2879b4c9f3c6f258caf48cda252d8
SHA256

905ff04266f76618e0a369332594b49422ecc23f707e424655a55ca279cb7c62
SHA512

51e294ef9a5a2b9861b0252cfd635b05b46336e9eb2b02477819f56cfbec7d5cc0176557a6389dc48dfcb9bc6f8440be5b8734410dc6d205c2d47f6ac27d128e
SSDEEP

96:rRaovg4Y5CA3aOTbdYAhpBuogZJpv5TyOnmuwn4zVG41qfuUvifzgC4lvG7Y8HCR:daovg4+C4aO+LD/H2U4liYbo93O6E

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

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
276	AcroRd32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
276	AcroRd32.exe
276	AcroRd32.exe
276	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 772 wrote to memory of 1444	772	cmd.exe	29
PID 772 wrote to memory of 1444	772	cmd.exe	29
PID 772 wrote to memory of 1444	772	cmd.exe	29
PID 1444 wrote to memory of 276	1444	rundll32.exe	30
PID 1444 wrote to memory of 276	1444	rundll32.exe	30
PID 1444 wrote to memory of 276	1444	rundll32.exe	30
PID 1444 wrote to memory of 276	1444	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\Borrador\Language\English.lng
1⤵
- Suspicious use of WriteProcessMemory
PID:772
- 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\English.lng
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:1444
- - 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\English.lng"
    3⤵
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:276

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/276-82-0x0000000075D01000-0x0000000075D03000-memory.dmp

Filesize
8KB

Download
memory/772-54-0x000007FEFB971000-0x000007FEFB973000-memory.dmp

Filesize
8KB

Download