541c0e0a54824f4f33b72a291e7a17a6da2ec756950caa22a78de44d48acb2b6

Resubmissions

11-02-2024 19:10

240211-xvlv5scf66 7

11-02-2024 17:12

240211-vqvalshh8t 7

Analysis

max time kernel
117s
max time network
122s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
11-02-2024 17:12

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General

Target

locales/en-US.pak
Size

114KB
MD5

88b9e849c0035cb100d031fa5e3fa0b4
SHA1

3576e0fa589e53ae36d2b75937bd3c5c0ab8dbfc
SHA256

25462802f57f52581d34d67df00f7a4d62cb5ee5ee0e5e853f48ad9caf04dd89
SHA512

99e8cf196cd9098adf74f569d06043809454860f8f3de9e942f3ce3c2faeeaa3d6bd0572503cb6c2a6b932aff9aa7e4542501731693ec6a015cc7282af388e8b
SSDEEP

3072:DtEP4VkHY9DS2harnCBNg2AJXZfHIF3ggl+S7wh:DqP4VkHzrVoXwh

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
Key created	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000_CLASSES\pak_auto_file	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000_CLASSES\pak_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000_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-1-5-21-3627615824-4061627003-3019543961-1000_CLASSES\pak_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000_Classes\Local Settings	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000_CLASSES\pak_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000_CLASSES\.pak	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000_CLASSES\.pak\ = "pak_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000_CLASSES\pak_auto_file\shell\Read	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2620	AcroRd32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2620	AcroRd32.exe
2620	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1392 wrote to memory of 2076	1392	cmd.exe	29
PID 1392 wrote to memory of 2076	1392	cmd.exe	29
PID 1392 wrote to memory of 2076	1392	cmd.exe	29
PID 2076 wrote to memory of 2620	2076	rundll32.exe	30
PID 2076 wrote to memory of 2620	2076	rundll32.exe	30
PID 2076 wrote to memory of 2620	2076	rundll32.exe	30
PID 2076 wrote to memory of 2620	2076	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\locales\en-US.pak
1⤵
- Suspicious use of WriteProcessMemory
PID:1392
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\locales\en-US.pak
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2076
- - 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\en-US.pak"
    3⤵
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:2620

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
4a5af53e2d4d8bd9fe91e80494968ff0

SHA1
0feac7c9da279a73ef3df149fd35e93e519a7dbc

SHA256
7fce8ec827f772024d5fd71975e8ab32aedb3dd46be60c4ff59b8a77517f3587

SHA512
fa01b2d665de1eb4e6cfd2b0dcdc9fdacf597fc689c7509a5239c998e9c90276cbd1a3865401f30ef1bd55992b28e4501ba4a02d864153ae616aa64f7b0478e6

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