e3d958c0be09c74f6ae0a947388ad2a52be5d149fa682badcbb24338fb0edc38

Analysis

max time kernel
122s
max time network
129s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
09/05/2024, 09:10

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General

Target
locales/cs.pak
Size 539KB
Sample240509-k5e45aab91
SHA256 1c9448ea3aefce1a7e1491e73af91af772d8b22d538676a2beab690558e668fa
MD5 70f320d38d249b48091786bd81343afc
SHA1 367decdcdad33369250af741b45bdc2ca3b41ab3
SHA512 02b08ed9261fd021e367995551defaf4b4f54c357409a362f4d2470423644913375cac444f62153ec2963a84880a30a36f827dbfacdd76a6222838c276cf5082
SSDEEP 6144:Lg4k2oNIYl8pvlntLO2A8YfZA2WBe5rK8VuvNO4w3SBZmPyO8QP:Lposty2A82IBe5rK8VuvNO93SrmPP
MD5 SHA1 SHA512 SSDEEP

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-1-5-21-1298544033-3225604241-2703760938-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\.pak	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\pak_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\pak_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\pak_auto_file\shell\Read\command	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\pak_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\pak_auto_file\	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\.pak\ = "pak_auto_file"	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_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
2488	AcroRd32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2488	AcroRd32.exe
2488	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2868 wrote to memory of 2592	2868	cmd.exe	29
PID 2868 wrote to memory of 2592	2868	cmd.exe	29
PID 2868 wrote to memory of 2592	2868	cmd.exe	29
PID 2592 wrote to memory of 2488	2592	rundll32.exe	30
PID 2592 wrote to memory of 2488	2592	rundll32.exe	30
PID 2592 wrote to memory of 2488	2592	rundll32.exe	30
PID 2592 wrote to memory of 2488	2592	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\locales\cs.pak
1⤵
- Suspicious use of WriteProcessMemory
PID:2868
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\locales\cs.pak
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2592
- - 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\cs.pak"
    3⤵
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:2488

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

SharedDataEvents

Path C:\Users\Admin\AppData\Roaming\Adobe\Acrobat\9.0\SharedDataEvents
Size 3KB
SHA256 adc4a7c7ef90f9e7a73379080cb55415c40b4d17140d2bbb7d7fa198164e0383
MD5 40f02a7338401ca2cf95b873f20d3167
SHA1 d876b14f28fb61257144c146c78b140ec29f138d
SHA512 78f01fadcb595b9885f150d7790bf3362be7293b815ee63234b217a2fd14823476288adfb07618133481b128fa2ad0498681ce9299c211b3a9b4d8f962725d44
MD5 SHA1 SHA512

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