4113ee678970bd438e135454ca93f5004b531ebeae76d29b49eb5c32620f5e29

Analysis

max time kernel
121s
max time network
137s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
23-02-2024 13:10

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General

Target

locales/en-US.pak
Size

428KB
MD5

809b600d2ee9e32b0b9b586a74683e39
SHA1

99d670c66d1f4d17a636f6d4edc54ad82f551e53
SHA256

0db4f65e527553b9e7bee395f774cc9447971bf0b86d1728856b6c15b88207bb
SHA512

9dfbe9fe0cfa3fcb5ce215ad8ab98e042760f4c1ff6247a6a32b18dd12617fc033a3bbf0a4667321a46a372fc26090e4d67581eaab615bf73cc96cb90e194431
SSDEEP

6144:5GdVxPtFXqVtOMP9eXe9HfaYvaVP51SLngF/cjjwB:yVpwOMge9B251SXjwB

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-1-5-21-406356229-2805545415-1236085040-1000_CLASSES\pak_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000_CLASSES\pak_auto_file\shell\Read	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
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
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

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3040	AcroRd32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
3040	AcroRd32.exe
3040	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1768 wrote to memory of 2896	1768	cmd.exe	29
PID 1768 wrote to memory of 2896	1768	cmd.exe	29
PID 1768 wrote to memory of 2896	1768	cmd.exe	29
PID 2896 wrote to memory of 3040	2896	rundll32.exe	30
PID 2896 wrote to memory of 3040	2896	rundll32.exe	30
PID 2896 wrote to memory of 3040	2896	rundll32.exe	30
PID 2896 wrote to memory of 3040	2896	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:1768
- 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:2896
- - 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:3040

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
10c087842ce10a0e9cf02af0a2cc7c97

SHA1
58b7a04e0c01b227d0e049c840d7be6b34468cb4

SHA256
820ed93c34f4c446b6ccf8da4b948ad3895a6bd13cf325b153b577d98a64a765

SHA512
bb2fc98320422f10c635d6257f4eaa3dc0094cbf8844955e286fcdd522e58f27a968329e699fd11df26f1b905660a045c7858098e540731fd169a5477ab9ab55

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