6245fa164605d119c883a056c185f3fd9c502eba4ef08290bdc053b0db68466e

Resubmissions

06-07-2023 13:22

230706-ql86rabe24 10

23-05-2023 17:55

230523-whe2dshc81 10

Analysis

max time kernel
150s
max time network
31s
platform
windows7_x64
resource
win7-20230703-en
resource tags

arch:x64arch:x86image:win7-20230703-enlocale:en-usos:windows7-x64system
submitted
06-07-2023 13:22

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General

Target

square_fit_ratio_list.json
Size

1KB
MD5

1ab7f39f0464c57b3a39cef063a2445a
SHA1

3a6e26465a7f21a1c4287e77a7234b09de00800d
SHA256

4e3908f5e328f6cc426de36489b71396fcf12a32b98c5a4f032e7467d8e6a37b
SHA512

311d2996f12bbbb81d03e0d9fd5db8452e23377a75d424deb26823db7da1aa830f10aaadb58d0c54ad9ddca96a7d1738d2d219335ddedae855b8b5705bfbf64b

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-1-5-21-264077997-199365141-898621884-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-264077997-199365141-898621884-1000_CLASSES\json_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-264077997-199365141-898621884-1000_CLASSES\json_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-264077997-199365141-898621884-1000_CLASSES\.json	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-264077997-199365141-898621884-1000_CLASSES\.json\ = "json_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-264077997-199365141-898621884-1000_CLASSES\json_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-264077997-199365141-898621884-1000_CLASSES\json_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-264077997-199365141-898621884-1000_CLASSES\json_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-264077997-199365141-898621884-1000_CLASSES\json_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

AcroRd32.exe

pid	Process
2324	AcroRd32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

Processes:

AcroRd32.exe

pid	Process
2324	AcroRd32.exe
2324	AcroRd32.exe
2324	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

cmd.exerundll32.exe

description	pid	Process	procid_target
PID 776 wrote to memory of 2948	776	cmd.exe	30
PID 776 wrote to memory of 2948	776	cmd.exe	30
PID 776 wrote to memory of 2948	776	cmd.exe	30
PID 2948 wrote to memory of 2324	2948	rundll32.exe	31
PID 2948 wrote to memory of 2324	2948	rundll32.exe	31
PID 2948 wrote to memory of 2324	2948	rundll32.exe	31
PID 2948 wrote to memory of 2324	2948	rundll32.exe	31

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\square_fit_ratio_list.json
1⤵
- Suspicious use of WriteProcessMemory
PID:776
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\square_fit_ratio_list.json
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2948
- - 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\square_fit_ratio_list.json"
    3⤵
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:2324

Network

MITRE ATT&CK Enterprise v6

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
472443fc44b32bee527577b1df1a9211

SHA1
18bdce106f0d84f9a4dc8fe7616b13d29817e3e8

SHA256
5088e5b95004b77e4be476c72aeb9c527de8a3f7669b3a135479cdf9673c782a

SHA512
e43272a69ca609f833b6a2b459db13b6506c8cd06e6c7649ebfbd62f3f2f782490bdbf1e3b69a4b635b62a9f92e3fb4772612980617e2034a885a794305f5b30

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