20ecc8d6a8738b7dc3bdd19c19c4348cb4206b4e7368d253d5516ccf07e90093

Analysis

max time kernel
117s
max time network
128s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
22-02-2024 08:51

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General

Target

locales/bg.pak
Size

631KB
MD5

9dc95c3b9b47cc9fe5a34b2aab2d4d01
SHA1

bc19494d160e4af6abd0a10c5adbc8114d50a714
SHA256

fc4a59ea60d04b224765be4916090e97ed8ddda6b136a92a3827ed0fcc64bb0e
SHA512

a05a506a13ac4566ecbfe7961ace091295967ea4e72a2865e647b5fa9adac9f7cf5e80b53fae0e3917dfb0b9a3f469189cd595cc4ae9239d3a849f5cedd60e46
SSDEEP

12288:mEJqOwccalYrdAs1alUx42aVVwslyLKmF/RY3YKN3R5ObDGIV+Jfu64KyzEfSZpR:vqAZlYrdAs1alUmys8lY3YKT6q2Qu6pu

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-1-5-21-778096762-2241304387-192235952-1000_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-1-5-21-778096762-2241304387-192235952-1000_CLASSES\pak_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-778096762-2241304387-192235952-1000_CLASSES\.pak\ = "pak_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-778096762-2241304387-192235952-1000_CLASSES\pak_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-778096762-2241304387-192235952-1000_CLASSES\pak_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-778096762-2241304387-192235952-1000_CLASSES\pak_auto_file\shell\Read\command	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-778096762-2241304387-192235952-1000_Classes\Local Settings	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-778096762-2241304387-192235952-1000_CLASSES\pak_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-778096762-2241304387-192235952-1000_CLASSES\.pak	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2428	AcroRd32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2428	AcroRd32.exe
2428	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1192 wrote to memory of 2544	1192	cmd.exe	29
PID 1192 wrote to memory of 2544	1192	cmd.exe	29
PID 1192 wrote to memory of 2544	1192	cmd.exe	29
PID 2544 wrote to memory of 2428	2544	rundll32.exe	30
PID 2544 wrote to memory of 2428	2544	rundll32.exe	30
PID 2544 wrote to memory of 2428	2544	rundll32.exe	30
PID 2544 wrote to memory of 2428	2544	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\locales\bg.pak
1⤵
- Suspicious use of WriteProcessMemory
PID:1192
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\locales\bg.pak
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2544
- - 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\bg.pak"
    3⤵
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:2428

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
56d77115b0e0026e5c160e1f85659138

SHA1
6bf7e3d4bf74822014b4d6a46864e150f710b037

SHA256
d6950e01841b8d9512c57fbc3f1eb8b3ae6c6444fe84e4b67d8863aff092ecb7

SHA512
931a74c57b585b20d04e9e6f09aecf03c492ce4a59b0d4db7cf097045182881e3213a1f09ffcc49cca259bd1c7a5291e413556d377c0551109f2272a315e9943

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