webmonitor | f1e52af7310c199ec5d44f16b37b6e4a7eebb3a55de5db292111440fa7d0da47

General

Target

PDFViewer.exe
Size

564KB
MD5

0b9f0463a2d36d53505c4911b74c8f08
SHA1

d5c929cbd199dadaa879fb9368103b11fb68e7fd
SHA256

f1e52af7310c199ec5d44f16b37b6e4a7eebb3a55de5db292111440fa7d0da47
SHA512

796e923ae65df8e652387628dccff85d2bfb793c99386aec34c2c6db3482d0bf97fd5586a72b4732b4bef2fe6aabd8e912b5b390068dd590d5d1a57d93f6d924

Score

10^/10

webmonitor backdoor infostealer persistence rat upx

Malware Config

Signatures

RevcodeRat, WebMonitorRat
WebMonitor is a remote access tool that you can use from any browser access to control, and monitor your phones, or PCs.
backdoor rat infostealer webmonitor

UPX packed file 1 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral1/memory/1388-66-0x0000000000400000-0x00000000004F6000-memory.dmp	upx

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Windows\CurrentVersion\Run\WebMonitor-3c00 = "C:\\Users\\Admin\\AppData\\Roaming\\WebMonitor-3c00.exe"	PDFViewer.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\WebMonitor-3c00 = "C:\\Users\\Admin\\AppData\\Roaming\\WebMonitor-3c00.exe"	PDFViewer.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1748 set thread context of 1388	1748	PDFViewer.exe	26

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
1748	PDFViewer.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeShutdownPrivilege	1388	PDFViewer.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
1748	PDFViewer.exe
1388	PDFViewer.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 1748 wrote to memory of 1388	1748	PDFViewer.exe	26
PID 1748 wrote to memory of 1388	1748	PDFViewer.exe	26
PID 1748 wrote to memory of 1388	1748	PDFViewer.exe	26
PID 1748 wrote to memory of 1388	1748	PDFViewer.exe	26
PID 1748 wrote to memory of 1388	1748	PDFViewer.exe	26

C:\Users\Admin\AppData\Local\Temp\PDFViewer.exe
"C:\Users\Admin\AppData\Local\Temp\PDFViewer.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1748
- C:\Users\Admin\AppData\Local\Temp\PDFViewer.exe
  "C:\Users\Admin\AppData\Local\Temp\PDFViewer.exe"
  2⤵
  - Adds Run key to start application
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:1388

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1388-66-0x0000000000400000-0x00000000004F6000-memory.dmp

Filesize
984KB

Download
memory/1388-67-0x0000000000260000-0x0000000000261000-memory.dmp

Filesize
4KB

Download
memory/1388-68-0x0000000002D30000-0x0000000003D30000-memory.dmp

Filesize
16.0MB

Download
memory/1748-61-0x00000000757E1000-0x00000000757E3000-memory.dmp

Filesize
8KB

Download
memory/1748-65-0x0000000000250000-0x0000000000257000-memory.dmp

Filesize
28KB

Download
memory/1748-64-0x0000000000240000-0x0000000000241000-memory.dmp

Filesize
4KB

Download

Analysis

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