b6138bd31f0930d6f489ac8ef0dad8333b30bcebc51c0940b19ab4cb3ffbab73

Analysis

max time kernel
142s
max time network
148s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
12-06-2024 04:33

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General

Target

YXCalendar.exe
Size

8.7MB
MD5

18418c7f12becb03f65121f37f50c284
SHA1

fbb2bd6f4494dc9e8798c0e2209de2967af69f80
SHA256

7b59ce0108b3474df9c3282afee1cfc41e0e572d5cf7b2cb72c3cc64ce77bd7b
SHA512

d546d4df4055c163aa2592423b92b82275e2a144cd713d1be513e02893cf223b216da6ef9a473acaaff3a2f01ff4f75780b484ae25403b9cc5fc51f4895a12b1
SSDEEP

196608:jIwzaWxdeNctICkmDcoPTDZ/tTpIhFeXawoE0D+JMvd:jIwHxd9tDcoHZ1wKS

Score

6^/10

persistence

Malware Config

Signatures

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

YXCalendar.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\优效日历 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\YXCalendar.exe\" --autorun"	YXCalendar.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

Processes:

YXCalendar.exe

pid process

1536 YXCalendar.exe
1536 YXCalendar.exe
1536 YXCalendar.exe
1536 YXCalendar.exe
1536 YXCalendar.exe
1536 YXCalendar.exe

Suspicious use of FindShellTrayWindow 17 IoCs

Processes:

YXCalendar.exe

pid	process
1536	YXCalendar.exe
1536	YXCalendar.exe
1536	YXCalendar.exe
1536	YXCalendar.exe
1536	YXCalendar.exe
1536	YXCalendar.exe
1536	YXCalendar.exe
1536	YXCalendar.exe
1536	YXCalendar.exe
1536	YXCalendar.exe
1536	YXCalendar.exe
1536	YXCalendar.exe
1536	YXCalendar.exe
1536	YXCalendar.exe
1536	YXCalendar.exe
1536	YXCalendar.exe
1536	YXCalendar.exe

Suspicious use of SendNotifyMessage 3 IoCs

Processes:

YXCalendar.exe

pid process

1536 YXCalendar.exe
1536 YXCalendar.exe
1536 YXCalendar.exe

C:\Users\Admin\AppData\Local\Temp\YXCalendar.exe
"C:\Users\Admin\AppData\Local\Temp\YXCalendar.exe"
1⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
PID:1536

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --field-trial-handle=3404,i,1999448010053300448,1112699187621658374,262144 --variations-seed-version --mojo-platform-channel-handle=4624 /prefetch:8
1⤵
PID:2792

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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