eb4a7d75e1661dc1d9e158317a788eaf1c280da115c0c78662d0cba514b1e59b

Analysis

max time kernel
210s
max time network
92s
platform
windows7_x64
resource
win7-20221111-en
resource tags

arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
submitted
04-02-2023 21:09

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General

Target

Setup/Locales/es.pak
Size

317KB
MD5

232beb6fc6e4f8bef55318958ed60c3c
SHA1

adfe81da2e24af959ee797b1d1d9d7ecce35b25f
SHA256

11d1a7d3657c61ff76bc48209330c1e63b826f46d37b0266dc5d690b95abbc9a
SHA512

326cb3b5774caf8c58dfad237b0cde896a81e049bb9abc4f762593b495105c5062c38692a17e06becb835ca2d66aa0745dc1940566c886b47cd6a26c4e70ad04
SSDEEP

6144:xQeXGXDDaCygF5PKBlmk5B7sGEPpGO6PZOk8q9:xJXQDDasVo8k5HEPA9

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\pak_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000_CLASSES\pak_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000_CLASSES\.pak	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000_CLASSES\pak_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000_CLASSES\pak_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000_CLASSES\pak_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000_CLASSES\pak_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
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\.pak\ = "pak_auto_file"	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
892	AcroRd32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
892	AcroRd32.exe
892	AcroRd32.exe
892	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 292 wrote to memory of 1260	292	cmd.exe	29
PID 292 wrote to memory of 1260	292	cmd.exe	29
PID 292 wrote to memory of 1260	292	cmd.exe	29
PID 1260 wrote to memory of 892	1260	rundll32.exe	30
PID 1260 wrote to memory of 892	1260	rundll32.exe	30
PID 1260 wrote to memory of 892	1260	rundll32.exe	30
PID 1260 wrote to memory of 892	1260	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\Setup\Locales\es.pak
1⤵
- Suspicious use of WriteProcessMemory
PID:292
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\Setup\Locales\es.pak
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:1260
- - 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\Setup\Locales\es.pak"
    3⤵
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:892

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/292-54-0x000007FEFC181000-0x000007FEFC183000-memory.dmp

Filesize
8KB

Download
memory/892-81-0x0000000000000000-mapping.dmp

Download
memory/892-82-0x0000000076941000-0x0000000076943000-memory.dmp

Filesize
8KB

Download
memory/1260-76-0x0000000000000000-mapping.dmp

Download