56bacfb737076b0b10f9896ac124c2e8f83cb855f7b31ef5a95338b7529b3126

Analysis

max time kernel
119s
max time network
124s
platform
windows7_x64
resource
win7-20240419-en
resource tags

arch:x64arch:x86image:win7-20240419-enlocale:en-usos:windows7-x64system
submitted
03-07-2024 04:56

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General

Target

chrome_200_percent.pak
Size

175KB
MD5

3bab45c70f22646cf8452c30903810cb
SHA1

40b31d4c79b5a2b8d12f8cf8b6c49c962c31f766
SHA256

d4282ae977f23afe252e19e421c8d09696ea3b83a1e73a6aaebaaa5547c74cbc
SHA512

85eda055494f0233c963e821906cf69d94e664d8396e8b08e7a8f412e1c16af71252fef1bfe3ed43cfad157aa90c0dcbb375626e2ddf0e807c9b23ad27e61d9c
SSDEEP

3072:9sDQYaEQN6AJP1N3/nXCWZQCPxBVrfR54x5GMR+F44ffbdZnYw9p4AbIVGYoDd+9:SDQYaNN681NPyCt9gx5GMRejnbdZnVEd

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-1-5-21-481678230-3773327859-3495911762-1000_Classes\Local Settings	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-481678230-3773327859-3495911762-1000_CLASSES\pak_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-481678230-3773327859-3495911762-1000_CLASSES\.pak	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-481678230-3773327859-3495911762-1000_CLASSES\pak_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-481678230-3773327859-3495911762-1000_CLASSES\pak_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-481678230-3773327859-3495911762-1000_CLASSES\.pak\ = "pak_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-481678230-3773327859-3495911762-1000_CLASSES\pak_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-481678230-3773327859-3495911762-1000_CLASSES\pak_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-481678230-3773327859-3495911762-1000_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
2824	AcroRd32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2824	AcroRd32.exe
2824	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1632 wrote to memory of 2236	1632	cmd.exe	29
PID 1632 wrote to memory of 2236	1632	cmd.exe	29
PID 1632 wrote to memory of 2236	1632	cmd.exe	29
PID 2236 wrote to memory of 2824	2236	rundll32.exe	30
PID 2236 wrote to memory of 2824	2236	rundll32.exe	30
PID 2236 wrote to memory of 2824	2236	rundll32.exe	30
PID 2236 wrote to memory of 2824	2236	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\chrome_200_percent.pak
1⤵
- Suspicious use of WriteProcessMemory
PID:1632
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\chrome_200_percent.pak
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2236
- - 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\chrome_200_percent.pak"
    3⤵
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:2824

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
e40c516cc220b3131a0866cc2ddb5e93

SHA1
e93ce66c3cf9da35ee12e014a87eb7d60115c733

SHA256
26201210c17a5e302657415266e6593db138c5de0e99c8fb393c1eb73b54fb38

SHA512
a6749e797a1ee3ad7ed977b046d8ab1ce565de2762e94089af5cbc176a88f25b56308f760170f14cf563ff12f6a97f40762b0aed96ea141474a9a43ba7090f4b

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