ef179f483aaa529e930f32ff5adb5b156cd56488c398797251bb992a5ca19e93

Analysis

max time kernel
120s
max time network
133s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
28-02-2024 04:37

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General

Target

locales/bg.pak
Size

861KB
MD5

0e8005b17ac49f50fb60f116f822840d
SHA1

f2486da277de22e5741356f8e73e60b7a7492510
SHA256

50e4f6b9c387adf4baba3377c61d99326cc3987928d8d60b88d1ac29352820ea
SHA512

5df18bbeabd56e70d4c5a80dee5b7ce48259000665941634937e556e3b3a1c6403aa45c410f6f755607549c9dd35d722987b447c50efca51228ffeca4628756d
SSDEEP

24576:9MCo3qBsklYOdAs1axUYVbOAHi373Z5+3aAK5kVDV5uRumpod2JK5ITOuORx6QKq:9MCo3qBsklY/UYVbOAHi373Z83a1kVDj

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-1-5-21-406356229-2805545415-1236085040-1000_CLASSES\pak_auto_file\shell\Read	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000_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-1-5-21-406356229-2805545415-1236085040-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000_CLASSES\pak_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000_CLASSES\pak_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000_CLASSES\.pak	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000_CLASSES\.pak\ = "pak_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000_CLASSES\pak_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000_CLASSES\pak_auto_file\shell\Read\command	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2876	AcroRd32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2876	AcroRd32.exe
2876	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 332 wrote to memory of 2584	332	cmd.exe	29
PID 332 wrote to memory of 2584	332	cmd.exe	29
PID 332 wrote to memory of 2584	332	cmd.exe	29
PID 2584 wrote to memory of 2876	2584	rundll32.exe	30
PID 2584 wrote to memory of 2876	2584	rundll32.exe	30
PID 2584 wrote to memory of 2876	2584	rundll32.exe	30
PID 2584 wrote to memory of 2876	2584	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:332
- 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:2584
- - 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:2876

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
7ac34a37df3b701f752be29889313c10

SHA1
e9e4ab29521519cf9b08ea347c9e288aed81d3b5

SHA256
2fb189c4e32512bfe21725beaaf39af223cf07493e5d745edcfff111dac2539d

SHA512
00139f8ba24a47323a4b77de4aa29e86a49920e5fc57cd583b1d0eab2f00c27e8cb1a15f578e305e736230c4aeef58533ce9ded01bc85dba16cfb71543357eb5

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