09e65a661e85c3a3ab0e848809e44f20332b9f46cf5da364c7c8d3992c957f85

Analysis

max time kernel
119s
max time network
125s
platform
windows7_x64
resource
win7-20240704-en
resource tags

arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
submitted
16-07-2024 11:59

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General

Target

browserres/cef_100_percent.pak
Size

200KB
MD5

51cd116911e8e3c2e5c0367b887f2417
SHA1

56e54592b9a2a8623d1f3b2cd1d6ea3ef61545b3
SHA256

3b83236664a5fe0aaf4ef723f636c844ef60cf1f33eca92927503ed4f7c1f115
SHA512

ce3263846cfc0b863a6026a581f865f49bf1a4e169c0e2ac0d1833b8bc41450240198ccbc637f9d67618a1d71bbfee252745ebf2fda51159625e4a2aef1cdf0f
SSDEEP

6144:5IYS+zaSR3aW2rxzw95TUhx5c1YC7x10fS7/:5Ic32cUhgf1dL

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

Processes:

rundll32.exe

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3294248377-1418901787-4083263181-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3294248377-1418901787-4083263181-1000_CLASSES\pak_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3294248377-1418901787-4083263181-1000_CLASSES\pak_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3294248377-1418901787-4083263181-1000_CLASSES\pak_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3294248377-1418901787-4083263181-1000_CLASSES\pak_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3294248377-1418901787-4083263181-1000_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-1-5-21-3294248377-1418901787-4083263181-1000_CLASSES\.pak	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3294248377-1418901787-4083263181-1000_CLASSES\.pak\ = "pak_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3294248377-1418901787-4083263181-1000_CLASSES\pak_auto_file\shell\Read	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

AcroRd32.exe

pid	Process
2796	AcroRd32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

AcroRd32.exe

pid	Process
2796	AcroRd32.exe
2796	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

cmd.exerundll32.exe

description	pid	Process	procid_target
PID 1940 wrote to memory of 2924	1940	cmd.exe	31
PID 1940 wrote to memory of 2924	1940	cmd.exe	31
PID 1940 wrote to memory of 2924	1940	cmd.exe	31
PID 2924 wrote to memory of 2796	2924	rundll32.exe	32
PID 2924 wrote to memory of 2796	2924	rundll32.exe	32
PID 2924 wrote to memory of 2796	2924	rundll32.exe	32
PID 2924 wrote to memory of 2796	2924	rundll32.exe	32

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\browserres\cef_100_percent.pak
1⤵
- Suspicious use of WriteProcessMemory
PID:1940
- 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_100_percent.pak
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2924
- - 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_100_percent.pak"
    3⤵
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:2796

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
c72175c115543038b5ff5e47f80b64ef

SHA1
af9996c03daadd375e07ae3efc25aaf0605806d8

SHA256
86b0a2045cfde935bd08228acc407f066dbce5f5181f3ced22f96ee12da2fdff

SHA512
c4af991f56a5eeca3d277e4e18778870646c1679fa76d82a205ef59bc106d70edf604848b42e0e7e874912b2d7f9ffd323e2b7d354546610c3c53bf2175d49d9

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