a8d5126a1eafba06775bf2eaaf74b52873f15ac8c35a3603517511fcc6e1eaea

Analysis

max time kernel
841s
max time network
847s
platform
windows7_x64
resource
win7-20240215-en
resource tags

arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system
submitted
23-02-2024 20:06

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General

Target

locales/pt-BR.pak
Size

510KB
MD5

5ba65ef5d3afb467dc5387f9ab0bfa96
SHA1

006e0aa5e7e5f69bffc3bb8ca5371a97db2feed8
SHA256

fca071050c9a032d2fcc4457c6b6ecf38406ffaa18e4f86aeb59359749051e35
SHA512

63d5df218da9ec91cc69b84c7a1a0b96a8863a8f3a32a97e29cad8130dfac9612e827170e5fc01940e674bd413f270425130d09247657166b80404264cdab06a
SSDEEP

6144:Pq0jS659iO1NBXBLXwEXlyEo5DTJS0qwsRQk9kp:Ld5UOo53JzsRB9W

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

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\.pak\ = "pak_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\pak_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\pak_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\pak_auto_file\shell\Read\command	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\.pak	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\pak_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\pak_auto_file\	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_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-1-5-21-2248906074-2862704502-246302768-1000_Classes\Local Settings	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2540	AcroRd32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2540	AcroRd32.exe
2540	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1656 wrote to memory of 2572	1656	cmd.exe	29
PID 1656 wrote to memory of 2572	1656	cmd.exe	29
PID 1656 wrote to memory of 2572	1656	cmd.exe	29
PID 2572 wrote to memory of 2540	2572	rundll32.exe	30
PID 2572 wrote to memory of 2540	2572	rundll32.exe	30
PID 2572 wrote to memory of 2540	2572	rundll32.exe	30
PID 2572 wrote to memory of 2540	2572	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\locales\pt-BR.pak
1⤵
- Suspicious use of WriteProcessMemory
PID:1656
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\locales\pt-BR.pak
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2572
- - 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\locales\pt-BR.pak"
    3⤵
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:2540

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

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

C:\Users\Admin\AppData\Roaming\Adobe\Acrobat\9.0\SharedDataEvents

Filesize
3KB

MD5
52edc9995ecbfc126d55147d3ccd79f9

SHA1
91e5bbaa7b865d9d22a7e0e787d5c7e3ba02f334

SHA256
76b5936e6cb4e4640d01f589453dbf1a6b68ad23c92272ba969718803a6a8d6d

SHA512
8e63e8a7c0b43c8bb7f6607982563f8ea195a417bdf5f89812b8e88fae96d83f7a903bb76976892bce5c7dc9fa2d43ed2f6dbfcaf26a42b4ebc60607c925c2c8

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