e9dc039998c294bb4745916c8a17814f2a441422173b20664fd63a3224df2e78

Analysis

max time kernel
149s
max time network
151s
platform
windows7_x64
resource
win7-20240215-en
resource tags

arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system
submitted
26-03-2024 17:56

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General

Target

dfc31105387cf0795685098b7c9aabc8.exe
Size

324KB
MD5

dfc31105387cf0795685098b7c9aabc8
SHA1

82c2fbe1564c2d9ae3b973e220ce24ed64f87ba7
SHA256

e9dc039998c294bb4745916c8a17814f2a441422173b20664fd63a3224df2e78
SHA512

da44f57ba77207fdf85c8bcca4998f42a369c0e53fb44baf3ca1faea84a8ba8e47e610711c33193ebec4fd2cf7f1b0a0999ee8459a41f803005b4445a9d3b251
SSDEEP

6144:s127RLqEA8syum7IjAv+9Ca8o2FUr7d9RupUaFtbziBRT:bVLqEtsyYjAm9Ca12Fmd9RyUa/zi

Score

8^/10

evasion persistence spyware stealer

Malware Config

Signatures

Disables taskbar notifications via registry modification
evasion

Modifies Installed Components in the registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000\Software\Microsoft\Active Setup\Installed Components	explorer.exe

Deletes itself 1 IoCs

pid	Process
2340	ytx.exe

Executes dropped EXE 1 IoCs

pid	Process
2340	ytx.exe

Loads dropped DLL 2 IoCs

pid	Process
2208	dfc31105387cf0795685098b7c9aabc8.exe
2208	dfc31105387cf0795685098b7c9aabc8.exe

Modifies system executable filetype association 2 TTPs 17 IoCs

persistence

Modify Registry

T1112

Change Default File Association

T1546.001

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\exefile\shell\start\command	ytx.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\exefile\Content Type = "application/x-msdownload"	ytx.exe
Key created	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\exefile\shell\runas	ytx.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\exefile\shell\start\command\ = "\"%1\" %*"	ytx.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\exefile\shell\start\command\IsolatedCommand = "\"%1\" %*"	ytx.exe
Key created	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\exefile\DefaultIcon	ytx.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\exefile\shell\runas\command\ = "\"%1\" %*"	ytx.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\exefile\shell\open\command\ = "\"C:\\Users\\Admin\\AppData\\Local\\ytx.exe\" -a \"%1\" %*"	ytx.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\exefile\shell\open\command\IsolatedCommand = "\"%1\" %*"	ytx.exe
Key created	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\exefile\shell\runas\command	ytx.exe
Key created	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\exefile\shell\start	ytx.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\exefile\DefaultIcon\ = "%1"	ytx.exe
Key created	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\exefile\shell\open	ytx.exe
Key created	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\exefile\shell\open\command	ytx.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\exefile\shell\runas\command\IsolatedCommand = "\"%1\" %*"	ytx.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\exefile\ = "Application"	ytx.exe
Key created	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\exefile\shell	ytx.exe

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

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-1-5-21-2248906074-2862704502-246302768-1000\Software\Microsoft\Windows\CurrentVersion\Run\ctfmon.exe = "C:\\WINDOWS\\system32\\ctfmon.exe"	ytx.exe

Modifies registry class 41 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\.exe\shell\start\command	ytx.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\.exe\shell\start\command\IsolatedCommand = "\"%1\" %*"	ytx.exe
Key created	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\exefile	ytx.exe
Key created	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\exefile\shell\runas	ytx.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\exefile\shell\runas\command\ = "\"%1\" %*"	ytx.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\exefile\shell\start\command\ = "\"%1\" %*"	ytx.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\.exe\Content Type = "application/x-msdownload"	ytx.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\.exe\shell\open\command\ = "\"C:\\Users\\Admin\\AppData\\Local\\ytx.exe\" -a \"%1\" %*"	ytx.exe
Key created	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_Classes\Local Settings	explorer.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\exefile\DefaultIcon\ = "%1"	ytx.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\exefile\shell\open\command\ = "\"C:\\Users\\Admin\\AppData\\Local\\ytx.exe\" -a \"%1\" %*"	ytx.exe
Key created	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\.exe\shell\start	ytx.exe
Key created	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\.exe\DefaultIcon	ytx.exe
Key created	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\.exe\shell\runas\command	ytx.exe
Key created	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\.exe\shell\runas	ytx.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\.exe\shell\start\command\ = "\"%1\" %*"	ytx.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\exefile\shell\runas\command\IsolatedCommand = "\"%1\" %*"	ytx.exe
Key created	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\exefile\shell\start	ytx.exe
Key created	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\.exe	ytx.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\.exe\DefaultIcon\ = "%1"	ytx.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\exefile\shell\start\command\IsolatedCommand = "\"%1\" %*"	ytx.exe
Key created	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\exefile\DefaultIcon	ytx.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\.exe\ = "exefile"	ytx.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\exefile\Content Type = "application/x-msdownload"	ytx.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\.exe\shell\runas\command\IsolatedCommand = "\"%1\" %*"	ytx.exe
Key created	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\exefile\shell	ytx.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\exefile\shell\open\command\IsolatedCommand = "\"%1\" %*"	ytx.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = ffffffff	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\.exe\shell\open	ytx.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\.exe\shell\open\command\IsolatedCommand = "\"%1\" %*"	ytx.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\.exe\shell\runas\command\ = "\"%1\" %*"	ytx.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\exefile\ = "Application"	ytx.exe
Key created	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\exefile\shell\open	ytx.exe
Key created	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\exefile\shell\open\command	ytx.exe
Key created	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\exefile\shell\runas\command	ytx.exe
Key created	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\exefile\shell\start\command	ytx.exe
Key created	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\.exe\shell	ytx.exe
Key created	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\.exe\shell\open\command	ytx.exe
Key created	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell	explorer.exe

Suspicious behavior: EnumeratesProcesses 14 IoCs

pid	Process
2208	dfc31105387cf0795685098b7c9aabc8.exe
2208	dfc31105387cf0795685098b7c9aabc8.exe
2208	dfc31105387cf0795685098b7c9aabc8.exe
2208	dfc31105387cf0795685098b7c9aabc8.exe
2208	dfc31105387cf0795685098b7c9aabc8.exe
2208	dfc31105387cf0795685098b7c9aabc8.exe
2208	dfc31105387cf0795685098b7c9aabc8.exe
2208	dfc31105387cf0795685098b7c9aabc8.exe
2208	dfc31105387cf0795685098b7c9aabc8.exe
2340	ytx.exe
2340	ytx.exe
2340	ytx.exe
2340	ytx.exe
2340	ytx.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2620	explorer.exe

Suspicious use of AdjustPrivilegeToken 16 IoCs

description	pid	Process
Token: SeShutdownPrivilege	2620	explorer.exe
Token: SeShutdownPrivilege	2620	explorer.exe
Token: SeShutdownPrivilege	2620	explorer.exe
Token: SeShutdownPrivilege	2620	explorer.exe
Token: SeShutdownPrivilege	2620	explorer.exe
Token: SeShutdownPrivilege	2620	explorer.exe
Token: SeShutdownPrivilege	2620	explorer.exe
Token: SeShutdownPrivilege	2620	explorer.exe
Token: SeShutdownPrivilege	2620	explorer.exe
Token: SeShutdownPrivilege	2620	explorer.exe
Token: SeShutdownPrivilege	2620	explorer.exe
Token: SeShutdownPrivilege	2620	explorer.exe
Token: SeShutdownPrivilege	2620	explorer.exe
Token: SeShutdownPrivilege	2620	explorer.exe
Token: SeShutdownPrivilege	2620	explorer.exe
Token: SeShutdownPrivilege	2620	explorer.exe

Suspicious use of FindShellTrayWindow 37 IoCs

pid	Process
2340	ytx.exe
2340	ytx.exe
2340	ytx.exe
2620	explorer.exe
2620	explorer.exe
2620	explorer.exe
2620	explorer.exe
2620	explorer.exe
2620	explorer.exe
2620	explorer.exe
2620	explorer.exe
2620	explorer.exe
2620	explorer.exe
2620	explorer.exe
2620	explorer.exe
2620	explorer.exe
2620	explorer.exe
2620	explorer.exe
2620	explorer.exe
2620	explorer.exe
2620	explorer.exe
2620	explorer.exe
2620	explorer.exe
2620	explorer.exe
2620	explorer.exe
2620	explorer.exe
2620	explorer.exe
2620	explorer.exe
2620	explorer.exe
2620	explorer.exe
2620	explorer.exe
2340	ytx.exe
2620	explorer.exe
2620	explorer.exe
2340	ytx.exe
2340	ytx.exe
2620	explorer.exe

Suspicious use of SendNotifyMessage 20 IoCs

pid	Process
2620	explorer.exe
2620	explorer.exe
2620	explorer.exe
2620	explorer.exe
2620	explorer.exe
2620	explorer.exe
2620	explorer.exe
2620	explorer.exe
2620	explorer.exe
2620	explorer.exe
2620	explorer.exe
2620	explorer.exe
2620	explorer.exe
2620	explorer.exe
2620	explorer.exe
2620	explorer.exe
2620	explorer.exe
2620	explorer.exe
2340	ytx.exe
2340	ytx.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2340	ytx.exe
2340	ytx.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2208 wrote to memory of 2340	2208	dfc31105387cf0795685098b7c9aabc8.exe	29
PID 2208 wrote to memory of 2340	2208	dfc31105387cf0795685098b7c9aabc8.exe	29
PID 2208 wrote to memory of 2340	2208	dfc31105387cf0795685098b7c9aabc8.exe	29
PID 2208 wrote to memory of 2340	2208	dfc31105387cf0795685098b7c9aabc8.exe	29

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Users\Admin\AppData\Local\Temp\dfc31105387cf0795685098b7c9aabc8.exe
"C:\Users\Admin\AppData\Local\Temp\dfc31105387cf0795685098b7c9aabc8.exe"
1⤵
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2208
- C:\Users\Admin\AppData\Local\ytx.exe
  "C:\Users\Admin\AppData\Local\ytx.exe" -gav C:\Users\Admin\AppData\Local\Temp\dfc31105387cf0795685098b7c9aabc8.exe
  2⤵
  - Deletes itself
  - Executes dropped EXE
  - Modifies system executable filetype association
  - Adds Run key to start application
  - Modifies registry class
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  - Suspicious use of SetWindowsHookEx
  PID:2340

C:\Windows\explorer.exe
explorer.exe
1⤵
- Modifies Installed Components in the registry
- Modifies registry class
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
PID:2620

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

Event Triggered Execution

T1546

Change Default File Association

T1546.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Event Triggered Execution

T1546

Change Default File Association

T1546.001

Defense Evasion

Modify Registry

T1112

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Query Registry

T1012

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

\Users\Admin\AppData\Local\ytx.exe

Filesize
324KB

MD5
dfc31105387cf0795685098b7c9aabc8

SHA1
82c2fbe1564c2d9ae3b973e220ce24ed64f87ba7

SHA256
e9dc039998c294bb4745916c8a17814f2a441422173b20664fd63a3224df2e78

SHA512
da44f57ba77207fdf85c8bcca4998f42a369c0e53fb44baf3ca1faea84a8ba8e47e610711c33193ebec4fd2cf7f1b0a0999ee8459a41f803005b4445a9d3b251

Download Submit
memory/2208-0-0x0000000000400000-0x00000000005EE000-memory.dmp

Filesize
1.9MB

Download
memory/2208-1-0x00000000003E0000-0x00000000003FC000-memory.dmp

Filesize
112KB

Download
memory/2208-2-0x0000000000400000-0x00000000005EE000-memory.dmp

Filesize
1.9MB

Download
memory/2208-3-0x0000000002300000-0x00000000025AA000-memory.dmp

Filesize
2.7MB

Download
memory/2208-12-0x0000000000400000-0x00000000005EE000-memory.dmp

Filesize
1.9MB

Download
memory/2340-20-0x0000000000400000-0x00000000005EE000-memory.dmp

Filesize
1.9MB

Download
memory/2340-27-0x0000000000400000-0x00000000005EE000-memory.dmp

Filesize
1.9MB

Download
memory/2340-16-0x0000000000400000-0x00000000005EE000-memory.dmp

Filesize
1.9MB

Download
memory/2340-17-0x0000000000400000-0x00000000005EE000-memory.dmp

Filesize
1.9MB

Download
memory/2340-35-0x0000000000400000-0x00000000005EE000-memory.dmp

Filesize
1.9MB

Download
memory/2340-19-0x0000000000400000-0x00000000005EE000-memory.dmp

Filesize
1.9MB

Download
memory/2340-14-0x0000000000400000-0x00000000005EE000-memory.dmp

Filesize
1.9MB

Download
memory/2340-21-0x0000000000400000-0x00000000005EE000-memory.dmp

Filesize
1.9MB

Download
memory/2340-26-0x0000000000400000-0x00000000005EE000-memory.dmp

Filesize
1.9MB

Download
memory/2340-34-0x0000000000400000-0x00000000005EE000-memory.dmp

Filesize
1.9MB

Download
memory/2340-28-0x0000000000400000-0x00000000005EE000-memory.dmp

Filesize
1.9MB

Download
memory/2340-29-0x0000000000400000-0x00000000005EE000-memory.dmp

Filesize
1.9MB

Download
memory/2340-30-0x0000000000400000-0x00000000005EE000-memory.dmp

Filesize
1.9MB

Download
memory/2340-31-0x0000000000400000-0x00000000005EE000-memory.dmp

Filesize
1.9MB

Download
memory/2340-32-0x0000000000400000-0x00000000005EE000-memory.dmp

Filesize
1.9MB

Download
memory/2620-33-0x0000000002A70000-0x0000000002A80000-memory.dmp

Filesize
64KB

Download
memory/2620-15-0x0000000004610000-0x0000000004611000-memory.dmp

Filesize
4KB

Download
memory/2620-18-0x0000000004610000-0x0000000004611000-memory.dmp

Filesize
4KB

Download