webmonitor | d14fb5a79ded18eb113e8ef66c9fdd4fc3e220113cebf1420b3cf5d7b41f4378

General

Target

Statement for due invoices.exe
Size

1020KB
MD5

39812fe18840e436a74aff55785f08d4
SHA1

88c0f62af95c53b0a4d1f2d9422c9016490851ed
SHA256

0d2cf62b947967dcece71936fe76d44d03d97f11c6ec580c67f33761a99ef708
SHA512

7188efcc5c683c4bdab4ad5dace8df49402e64de6c3bf6c6be980e831ae1aca9a7a094aee89f97236f1f00468e6ba93988dad2ca8c2778557f8f5d5418ccaa24

Score

10^/10

webmonitor backdoor infostealer rat upx

Malware Config

Extracted

Family

webmonitor

C2

blackwire.wm01.to:443

Attributes

config_key
XHSPjxLqnkGzEknQM1EIWtzFAMfNcnJY
private_key
Bm19W87ME
url_path
/recv5.php

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 3 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1804-68-0x0000000000400000-0x00000000004F6000-memory.dmp	family_webmonitor
behavioral1/memory/1804-69-0x0000000000400000-0x00000000004F6000-memory.dmp	family_webmonitor
behavioral1/memory/1804-71-0x00000000032C0000-0x00000000042C0000-memory.dmp	family_webmonitor

UPX packed file 8 IoCs

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

upx

Processes:

resource	yara_rule
behavioral1/memory/1804-60-0x0000000000400000-0x00000000004F6000-memory.dmp	upx
behavioral1/memory/1804-62-0x0000000000400000-0x00000000004F6000-memory.dmp	upx
behavioral1/memory/1804-63-0x0000000000400000-0x00000000004F6000-memory.dmp	upx
behavioral1/memory/1804-65-0x0000000000400000-0x00000000004F6000-memory.dmp	upx
behavioral1/memory/1804-67-0x0000000000400000-0x00000000004F6000-memory.dmp	upx
behavioral1/memory/1804-68-0x0000000000400000-0x00000000004F6000-memory.dmp	upx
behavioral1/memory/1804-69-0x0000000000400000-0x00000000004F6000-memory.dmp	upx
behavioral1/memory/1804-71-0x00000000032C0000-0x00000000042C0000-memory.dmp	upx

Unexpected DNS network traffic destination 2 IoCs
Network traffic to other servers than the configured DNS servers was detected on the DNS port.

Processes:

description ioc

Destination IP 185.243.215.214
Destination IP 185.243.215.214
Suspicious use of SetThreadContext 1 IoCs

Processes:

Statement for due invoices.exe

description pid process target process

PID 2044 set thread context of 1804 2044 Statement for due invoices.exe Statement for due invoices.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task
T1053

Processes:

schtasks.exe

pid process

1820 schtasks.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

Statement for due invoices.exe

description pid process

Token: SeShutdownPrivilege 1804 Statement for due invoices.exe

description	ioc
Destination IP	185.243.215.214
Destination IP	185.243.215.214

description	pid	process	target process
PID 2044 set thread context of 1804	2044	Statement for due invoices.exe	Statement for due invoices.exe

pid	process
1820	schtasks.exe

description	pid	process
Token: SeShutdownPrivilege	1804	Statement for due invoices.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

Statement for due invoices.exe

description	pid	process	target process
PID 2044 wrote to memory of 1820	2044	Statement for due invoices.exe	schtasks.exe
PID 2044 wrote to memory of 1820	2044	Statement for due invoices.exe	schtasks.exe
PID 2044 wrote to memory of 1820	2044	Statement for due invoices.exe	schtasks.exe
PID 2044 wrote to memory of 1820	2044	Statement for due invoices.exe	schtasks.exe
PID 2044 wrote to memory of 1804	2044	Statement for due invoices.exe	Statement for due invoices.exe
PID 2044 wrote to memory of 1804	2044	Statement for due invoices.exe	Statement for due invoices.exe
PID 2044 wrote to memory of 1804	2044	Statement for due invoices.exe	Statement for due invoices.exe
PID 2044 wrote to memory of 1804	2044	Statement for due invoices.exe	Statement for due invoices.exe
PID 2044 wrote to memory of 1804	2044	Statement for due invoices.exe	Statement for due invoices.exe
PID 2044 wrote to memory of 1804	2044	Statement for due invoices.exe	Statement for due invoices.exe
PID 2044 wrote to memory of 1804	2044	Statement for due invoices.exe	Statement for due invoices.exe
PID 2044 wrote to memory of 1804	2044	Statement for due invoices.exe	Statement for due invoices.exe

C:\Users\Admin\AppData\Local\Temp\Statement for due invoices.exe
"C:\Users\Admin\AppData\Local\Temp\Statement for due invoices.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2044

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\iPiuyFhOmJALV" /XML "C:\Users\Admin\AppData\Local\Temp\tmpE071.tmp"
2⤵
- Creates scheduled task(s)
PID:1820

C:\Users\Admin\AppData\Local\Temp\Statement for due invoices.exe
"{path}"
2⤵
- Suspicious use of AdjustPrivilegeToken
PID:1804

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmpE071.tmp
Filesize
1KB

MD5
da176821e55af7dcad375ba593082684

SHA1
edb7dec1d8ebb16f086a32f40f7aaf258226ee26

SHA256
9727d50a2f2da4774cfc70b6a607106f84ce12df2d3819a49e84b1cf6e8a87aa

SHA512
480a858a540b670d8398cfb8d6678d447ce47190da238c9721e2ad4f29266e283102a6e0ff1056e6be8ea67bccd0cf6bf4083ae7daec6b6c24f0ebc71d8bd9ce

Download Submit
memory/1804-63-0x0000000000400000-0x00000000004F6000-memory.dmp

Filesize
984KB

Download
memory/1804-64-0x00000000004F4AC0-mapping.dmp

Download
memory/1804-71-0x00000000032C0000-0x00000000042C0000-memory.dmp

Filesize
16.0MB

Download
memory/1804-69-0x0000000000400000-0x00000000004F6000-memory.dmp

Filesize
984KB

Download
memory/1804-59-0x0000000000400000-0x00000000004F6000-memory.dmp

Filesize
984KB

Download
memory/1804-60-0x0000000000400000-0x00000000004F6000-memory.dmp

Filesize
984KB

Download
memory/1804-68-0x0000000000400000-0x00000000004F6000-memory.dmp

Filesize
984KB

Download
memory/1804-67-0x0000000000400000-0x00000000004F6000-memory.dmp

Filesize
984KB

Download
memory/1804-62-0x0000000000400000-0x00000000004F6000-memory.dmp

Filesize
984KB

Download
memory/1804-65-0x0000000000400000-0x00000000004F6000-memory.dmp

Filesize
984KB

Download
memory/1804-66-0x0000000075841000-0x0000000075843000-memory.dmp

Filesize
8KB

Download
memory/1820-57-0x0000000000000000-mapping.dmp

Download
memory/2044-54-0x0000000000C80000-0x0000000000D86000-memory.dmp

Filesize
1.0MB

Download
memory/2044-56-0x00000000051C0000-0x000000000526C000-memory.dmp

Filesize
688KB

Download
memory/2044-55-0x0000000000770000-0x000000000078E000-memory.dmp

Filesize
120KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads