webmonitor | 142cf7f01ff7c99da5e16196325e3fa3a6d867ff0e50696d727c92696ba97ccf

General

Target

bcb77b64ef4a369f8b381aff4c6f1c57.exe
Size

982KB
MD5

bcb77b64ef4a369f8b381aff4c6f1c57
SHA1

4624958cd8a724ad01868331d9a78a64fb0cdcb0
SHA256

142cf7f01ff7c99da5e16196325e3fa3a6d867ff0e50696d727c92696ba97ccf
SHA512

9249aea1d4a0d467c544271297ee7b88851c586c9afab522f845a071d7551bbefdfc49b516d13bb5d31277ab194026ecd5852e0d751b0527e7543a2d9607405a
SSDEEP

24576:kkirwmPnCRldoDbhC8xyhFOKOl0TWfNBBx6xs30LM:kxrwmPnCS/TxAFOX+TYwxk0LM

Score

10^/10

webmonitor backdoor infostealer rat

Malware Config

Extracted

Family

webmonitor

C2

niiarmah.wm01.to:443

Attributes

config_key
4EcDHH7aWbl50LayUnuRlJWUXiKQWk0O
private_key
yvkn5wM8E
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 5 IoCs

Processes:

resource	yara_rule
behavioral2/memory/1724-3-0x0000000000400000-0x00000000004F3000-memory.dmp	family_webmonitor
behavioral2/memory/1724-4-0x0000000000400000-0x00000000004F3000-memory.dmp	family_webmonitor
behavioral2/memory/1724-5-0x0000000000400000-0x00000000004F3000-memory.dmp	family_webmonitor
behavioral2/memory/1724-6-0x0000000000400000-0x00000000004F3000-memory.dmp	family_webmonitor
behavioral2/memory/1724-10-0x0000000000400000-0x00000000004F3000-memory.dmp	family_webmonitor

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

bcb77b64ef4a369f8b381aff4c6f1c57.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-557049126-2506969350-2798870634-1000\Control Panel\International\Geo\Nation	bcb77b64ef4a369f8b381aff4c6f1c57.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

bcb77b64ef4a369f8b381aff4c6f1c57.exe

description pid process target process

PID 4524 set thread context of 1724 4524 bcb77b64ef4a369f8b381aff4c6f1c57.exe bcb77b64ef4a369f8b381aff4c6f1c57.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082
Suspicious behavior: MapViewOfSection 1 IoCs

Processes:

bcb77b64ef4a369f8b381aff4c6f1c57.exe

pid process

4524 bcb77b64ef4a369f8b381aff4c6f1c57.exe
Suspicious behavior: RenamesItself 1 IoCs

Processes:

bcb77b64ef4a369f8b381aff4c6f1c57.exe

pid process

1724 bcb77b64ef4a369f8b381aff4c6f1c57.exe

description	pid	process	target process
PID 4524 set thread context of 1724	4524	bcb77b64ef4a369f8b381aff4c6f1c57.exe	bcb77b64ef4a369f8b381aff4c6f1c57.exe

pid	process
4524	bcb77b64ef4a369f8b381aff4c6f1c57.exe

pid	process
1724	bcb77b64ef4a369f8b381aff4c6f1c57.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

bcb77b64ef4a369f8b381aff4c6f1c57.exe

description	pid	process
Token: SeShutdownPrivilege	1724	bcb77b64ef4a369f8b381aff4c6f1c57.exe
Token: SeCreatePagefilePrivilege	1724	bcb77b64ef4a369f8b381aff4c6f1c57.exe

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

bcb77b64ef4a369f8b381aff4c6f1c57.exebcb77b64ef4a369f8b381aff4c6f1c57.exe

description	pid	process	target process
PID 4524 wrote to memory of 1724	4524	bcb77b64ef4a369f8b381aff4c6f1c57.exe	bcb77b64ef4a369f8b381aff4c6f1c57.exe
PID 4524 wrote to memory of 1724	4524	bcb77b64ef4a369f8b381aff4c6f1c57.exe	bcb77b64ef4a369f8b381aff4c6f1c57.exe
PID 4524 wrote to memory of 1724	4524	bcb77b64ef4a369f8b381aff4c6f1c57.exe	bcb77b64ef4a369f8b381aff4c6f1c57.exe
PID 4524 wrote to memory of 1724	4524	bcb77b64ef4a369f8b381aff4c6f1c57.exe	bcb77b64ef4a369f8b381aff4c6f1c57.exe
PID 1724 wrote to memory of 3732	1724	bcb77b64ef4a369f8b381aff4c6f1c57.exe	cmd.exe
PID 1724 wrote to memory of 3732	1724	bcb77b64ef4a369f8b381aff4c6f1c57.exe	cmd.exe
PID 1724 wrote to memory of 3732	1724	bcb77b64ef4a369f8b381aff4c6f1c57.exe	cmd.exe

C:\Users\Admin\AppData\Local\Temp\bcb77b64ef4a369f8b381aff4c6f1c57.exe
"C:\Users\Admin\AppData\Local\Temp\bcb77b64ef4a369f8b381aff4c6f1c57.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:4524

C:\Users\Admin\AppData\Local\Temp\bcb77b64ef4a369f8b381aff4c6f1c57.exe
"C:\Users\Admin\AppData\Local\Temp\bcb77b64ef4a369f8b381aff4c6f1c57.exe"
2⤵
- Checks computer location settings
- Suspicious behavior: RenamesItself
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1724

C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\f1zVfv0NwCdkk23L.bat" "
3⤵
PID:3732

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

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Downloads

C:\Users\Admin\AppData\Local\Temp\f1zVfv0NwCdkk23L.bat
Filesize
204B

MD5
0279c80a0a203b6a36ca19fc604bcc41

SHA1
e3cae02551579e2e0090cabafc72a1cabfd7d232

SHA256
32b875308b04d0fa70da3fda54d602578bb81b2259a107319781b6522f7ec446

SHA512
012048b7159c5b725302c3193047f887fc97d53fac4bda0851a9fff8092e0b69fd3a52a28d5e1b6074836888d1768adbda53e101d66dc1357f501e8584bcb8c1

Download Submit
memory/1724-3-0x0000000000400000-0x00000000004F3000-memory.dmp

Filesize
972KB

Download
memory/1724-4-0x0000000000400000-0x00000000004F3000-memory.dmp

Filesize
972KB

Download
memory/1724-5-0x0000000000400000-0x00000000004F3000-memory.dmp

Filesize
972KB

Download
memory/1724-6-0x0000000000400000-0x00000000004F3000-memory.dmp

Filesize
972KB

Download
memory/1724-10-0x0000000000400000-0x00000000004F3000-memory.dmp

Filesize
972KB

Download
memory/4524-1-0x00000000000A0000-0x00000000001A0000-memory.dmp

Filesize
1024KB

Download
memory/4524-2-0x00000000009E0000-0x00000000009E2000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads