webmonitor | 142cf7f01ff7c99da5e16196325e3fa3a6d867ff0e50696d727c92696ba97ccf

Analysis

max time kernel
16s
max time network
121s
platform
windows10_x64
resource
win10v20210408
submitted
11-08-2021 08:39

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General

Target

po.exe
Size

982KB
MD5

bcb77b64ef4a369f8b381aff4c6f1c57
SHA1

4624958cd8a724ad01868331d9a78a64fb0cdcb0
SHA256

142cf7f01ff7c99da5e16196325e3fa3a6d867ff0e50696d727c92696ba97ccf
SHA512

9249aea1d4a0d467c544271297ee7b88851c586c9afab522f845a071d7551bbefdfc49b516d13bb5d31277ab194026ecd5852e0d751b0527e7543a2d9607405a

Score

10^/10

webmonitor backdoor infostealer rat

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

WebMonitor Payload 1 IoCs

Processes:

resource	yara_rule
behavioral2/memory/3920-116-0x0000000000400000-0x00000000004F3000-memory.dmp	family_webmonitor

Suspicious use of SetThreadContext 1 IoCs

Processes:

po.exe

description pid process target process

PID 804 set thread context of 3920 804 po.exe po.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Suspicious behavior: MapViewOfSection 1 IoCs

Processes:

po.exe

pid process

804 po.exe
Suspicious behavior: RenamesItself 1 IoCs

Processes:

po.exe

pid process

3920 po.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

po.exe

description pid process

Token: SeShutdownPrivilege 3920 po.exe
Token: SeCreatePagefilePrivilege 3920 po.exe

description	pid	process	target process
PID 804 set thread context of 3920	804	po.exe	po.exe

pid	process
804	po.exe

pid	process
3920	po.exe

description	pid	process
Token: SeShutdownPrivilege	3920	po.exe
Token: SeCreatePagefilePrivilege	3920	po.exe

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

po.exepo.exe

description	pid	process	target process
PID 804 wrote to memory of 3920	804	po.exe	po.exe
PID 804 wrote to memory of 3920	804	po.exe	po.exe
PID 804 wrote to memory of 3920	804	po.exe	po.exe
PID 804 wrote to memory of 3920	804	po.exe	po.exe
PID 3920 wrote to memory of 3808	3920	po.exe	cmd.exe
PID 3920 wrote to memory of 3808	3920	po.exe	cmd.exe
PID 3920 wrote to memory of 3808	3920	po.exe	cmd.exe

C:\Users\Admin\AppData\Local\Temp\po.exe
"C:\Users\Admin\AppData\Local\Temp\po.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:804

C:\Users\Admin\AppData\Local\Temp\po.exe
"C:\Users\Admin\AppData\Local\Temp\po.exe"
2⤵
- Suspicious behavior: RenamesItself
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3920

C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\GL7QQb8wbowPtufQ.bat" "
3⤵
PID:3808

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\GL7QQb8wbowPtufQ.bat
MD5
8fdd15260836f40373b1bfab25aab700

SHA1
81deb6070bca263d319bedc4fe1fa0e6b605e299

SHA256
6ce572919587a48e95bd5c8ec95a7ea6e4a64d3a40a21164afa0c8059b46ae6a

SHA512
e9983ed0ac701902552556d93d56d9aca10b7f2ae12dbd5b7cd203aba8970be0cc4b7f7b573144b3935c36741e0e7d5f08f4303fdd8ceab28f86b35098c69c25

Download Submit
memory/804-115-0x00000000001F0000-0x00000000001F2000-memory.dmp

Filesize
8KB

Download
memory/3808-117-0x0000000000000000-mapping.dmp

Download
memory/3920-114-0x000000000049D8CA-mapping.dmp

Download
memory/3920-116-0x0000000000400000-0x00000000004F3000-memory.dmp

Filesize
972KB

Download