b6138bd31f0930d6f489ac8ef0dad8333b30bcebc51c0940b19ab4cb3ffbab73

Analysis

max time kernel
122s
max time network
123s
platform
windows7_x64
resource
win7-20240419-en
resource tags

arch:x64arch:x86image:win7-20240419-enlocale:en-usos:windows7-x64system
submitted
12/06/2024, 04:33

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General

Target
YXCalendar.exe
Size 8.7MB
Sample240612-e6wkls1cnp
SHA256 7b59ce0108b3474df9c3282afee1cfc41e0e572d5cf7b2cb72c3cc64ce77bd7b
MD5 18418c7f12becb03f65121f37f50c284
SHA1 fbb2bd6f4494dc9e8798c0e2209de2967af69f80
SHA512 d546d4df4055c163aa2592423b92b82275e2a144cd713d1be513e02893cf223b216da6ef9a473acaaff3a2f01ff4f75780b484ae25403b9cc5fc51f4895a12b1
SSDEEP 196608:jIwzaWxdeNctICkmDcoPTDZ/tTpIhFeXawoE0D+JMvd:jIwHxd9tDcoHZ1wKS
MD5 SHA1 SHA512 SSDEEP

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

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-481678230-3773327859-3495911762-1000\Software\Microsoft\Windows\CurrentVersion\Run\优效日历 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\YXCalendar.exe\" --autorun"	YXCalendar.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
1148	YXCalendar.exe
1148	YXCalendar.exe
1148	YXCalendar.exe
1148	YXCalendar.exe
1148	YXCalendar.exe
1148	YXCalendar.exe
1148	YXCalendar.exe
1148	YXCalendar.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeShutdownPrivilege	1148	YXCalendar.exe

Suspicious use of FindShellTrayWindow 17 IoCs

pid	Process
1148	YXCalendar.exe
1148	YXCalendar.exe
1148	YXCalendar.exe
1148	YXCalendar.exe
1148	YXCalendar.exe
1148	YXCalendar.exe
1148	YXCalendar.exe
1148	YXCalendar.exe
1148	YXCalendar.exe
1148	YXCalendar.exe
1148	YXCalendar.exe
1148	YXCalendar.exe
1148	YXCalendar.exe
1148	YXCalendar.exe
1148	YXCalendar.exe
1148	YXCalendar.exe
1148	YXCalendar.exe

Suspicious use of SendNotifyMessage 3 IoCs

pid	Process
1148	YXCalendar.exe
1148	YXCalendar.exe
1148	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 AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
PID:1148

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

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

Command and Control

Exfiltration

Impact

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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