09e65a661e85c3a3ab0e848809e44f20332b9f46cf5da364c7c8d3992c957f85

Analysis

max time kernel
120s
max time network
125s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
16-07-2024 11:59

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General

Target

browserres/cef.pak
Size

1.9MB
MD5

d1c40362fe2f365dcf4363713727aba9
SHA1

e68372e078bcfb8baba6909ef39e05e6bcaccce4
SHA256

c91bb3bd9431300da48e18f9f4d576b76c5cfbb0749c0d7dbda159fdb99a3edd
SHA512

e179ac734f6dfc961c03a2d617d945abe1ed9fd120a02cd1f408c30d1a0b1a37667e145e302f3f2761a4de6068d4ed8737c97f8e9cf9f77e42d079f94c3e0263
SSDEEP

49152:YZTSD2VMdS8xOt88ZCPbfNIWY1xG0jJbaCUXEWT:RyycRd0PbVHYfG0jJPA5

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-1-5-21-1506706701-1246725540-2219210854-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1506706701-1246725540-2219210854-1000_CLASSES\pak_auto_file	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1506706701-1246725540-2219210854-1000_CLASSES\pak_auto_file\shell	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1506706701-1246725540-2219210854-1000_CLASSES\pak_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1506706701-1246725540-2219210854-1000_CLASSES\pak_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1506706701-1246725540-2219210854-1000_CLASSES\.pak	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1506706701-1246725540-2219210854-1000_CLASSES\.pak\ = "pak_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1506706701-1246725540-2219210854-1000_CLASSES\pak_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1506706701-1246725540-2219210854-1000_CLASSES\pak_auto_file\shell\Read\command	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2916	AcroRd32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2916	AcroRd32.exe
2916	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 3020 wrote to memory of 2388	3020	cmd.exe	32
PID 3020 wrote to memory of 2388	3020	cmd.exe	32
PID 3020 wrote to memory of 2388	3020	cmd.exe	32
PID 2388 wrote to memory of 2916	2388	rundll32.exe	33
PID 2388 wrote to memory of 2916	2388	rundll32.exe	33
PID 2388 wrote to memory of 2916	2388	rundll32.exe	33
PID 2388 wrote to memory of 2916	2388	rundll32.exe	33

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\browserres\cef.pak
1⤵
- Suspicious use of WriteProcessMemory
PID:3020
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\browserres\cef.pak
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2388
- - 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\browserres\cef.pak"
    3⤵
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:2916

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

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Downloads

C:\Users\Admin\AppData\Roaming\Adobe\Acrobat\9.0\SharedDataEvents

Filesize
3KB

MD5
cb605654e9004ef779a5dbf5a3b13c31

SHA1
49259201716feaa699d5f622e8a8764db2e3f458

SHA256
270b4e8e4fd287cf048ae9e9320fe2c64f0f8aa5b470a71f73ed84d6a9de5e4e

SHA512
a71d12430479722f5741d5cd63c30be63eefc2a82d080717476eb75cf57a94583c59553eb2a50296ac499aef182246960ccec7606ccf090a7de51e721884912d

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