decbeada040f605e83f0b4df16aba94ced8762200a35d3e78ef7aedee49b37ad

Analysis

max time kernel
119s
max time network
134s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
13/02/2024, 22:01

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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
Key created	\REGISTRY\USER\S-1-5-21-3427588347-1492276948-3422228430-1000_CLASSES\.pak	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3427588347-1492276948-3422228430-1000_CLASSES\.pak\ = "pak_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3427588347-1492276948-3422228430-1000_CLASSES\pak_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3427588347-1492276948-3422228430-1000_CLASSES\pak_auto_file\shell\Read\command	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3427588347-1492276948-3422228430-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3427588347-1492276948-3422228430-1000_CLASSES\pak_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3427588347-1492276948-3422228430-1000_CLASSES\pak_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3427588347-1492276948-3422228430-1000_CLASSES\pak_auto_file\shell	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3427588347-1492276948-3422228430-1000_CLASSES\pak_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
2836	AcroRd32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2836	AcroRd32.exe
2836	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2288 wrote to memory of 2728	2288	cmd.exe	29
PID 2288 wrote to memory of 2728	2288	cmd.exe	29
PID 2288 wrote to memory of 2728	2288	cmd.exe	29
PID 2728 wrote to memory of 2836	2728	rundll32.exe	30
PID 2728 wrote to memory of 2836	2728	rundll32.exe	30
PID 2728 wrote to memory of 2836	2728	rundll32.exe	30
PID 2728 wrote to memory of 2836	2728	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:2288
- 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:2728
- - 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:2836

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
5dc5f4c462a3f208248fcf18399ef941

SHA1
3b6c1a70a8ee8b48b16ef59fd85a013da767cf3c

SHA256
6c5a4395e6cab300458e37a86a5cc1d8e64afe8687bd6cbb891e9e18e3f22f56

SHA512
7d91b0f31b95050a6ffae4259405e563545a302031916a93793f584500565358fc8ed3a9b05d4b20d4ea74e65dd47da3e5e435736b980bf397f5f5fd76ceac62

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