decbeada040f605e83f0b4df16aba94ced8762200a35d3e78ef7aedee49b37ad

Analysis

max time kernel
118s
max time network
130s
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/cs.pak
Size

393KB
MD5

26765c7be201444f0238962bb16a506b
SHA1

f9d4a33795e45127c14bcf35cc770845627e15e8
SHA256

936466784a55b965d23b016bc49377655bc5d281d012c8369c0809c961e05c74
SHA512

577d52d2d5048cd952aff1e76121a495328c1978cdea2eaa4f85812cc513917f69510e135e96f7967f4ed43cf88e180cb1d9059e17c855c8d4f94ca036730214
SSDEEP

6144:qEcblAZYhg7PlAKRM55Z8+U1KN0g588QM:qfJAahgrxM55Z8+UoN0gb

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-1-5-21-1268429524-3929314613-1992311491-1000_Classes\Local Settings	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1268429524-3929314613-1992311491-1000_CLASSES\pak_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1268429524-3929314613-1992311491-1000_CLASSES\.pak	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1268429524-3929314613-1992311491-1000_CLASSES\.pak\ = "pak_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1268429524-3929314613-1992311491-1000_CLASSES\pak_auto_file\shell	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1268429524-3929314613-1992311491-1000_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-1-5-21-1268429524-3929314613-1992311491-1000_CLASSES\pak_auto_file	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1268429524-3929314613-1992311491-1000_CLASSES\pak_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1268429524-3929314613-1992311491-1000_CLASSES\pak_auto_file\shell\Read\command	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2736	AcroRd32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2736	AcroRd32.exe
2736	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2176 wrote to memory of 2868	2176	cmd.exe	29
PID 2176 wrote to memory of 2868	2176	cmd.exe	29
PID 2176 wrote to memory of 2868	2176	cmd.exe	29
PID 2868 wrote to memory of 2736	2868	rundll32.exe	30
PID 2868 wrote to memory of 2736	2868	rundll32.exe	30
PID 2868 wrote to memory of 2736	2868	rundll32.exe	30
PID 2868 wrote to memory of 2736	2868	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:2176
- 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:2868
- - 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:2736

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
79887e2281026fc8ccb7f5ec51e12f5c

SHA1
5b2f2c489bfcd14f5e34ea923abd4ccb2aba775b

SHA256
42b5fdb921a549dfb8644d33b2b302c3db7416b1d8e59f7fea3c8a9dd78d47d6

SHA512
12e2d1c4148e566a6105baf17409b40fd8d0b230aafbba309002f786de5e5cdc152bc4e2b9dc1a413848a99f620b3f9301c6f08b84087540066c0c46401bf1f7

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