webmonitor | 167f23bd6318e7e1bbe296639468d866b2b457410daab0e6b941dac6bcc4563f

Analysis

max time kernel
93s
max time network
113s
platform
windows10-2004_x64
resource
win10v2004-20240221-en
resource tags

arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system
submitted
25-02-2024 11:19

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General

Target

a3a62c034f2eb97d3673d2a608073f7e.exe
Size

1.8MB
MD5

a3a62c034f2eb97d3673d2a608073f7e
SHA1

250644fc77d95c6dcaef531b0f351f5ce33bbfbd
SHA256

167f23bd6318e7e1bbe296639468d866b2b457410daab0e6b941dac6bcc4563f
SHA512

16c0b478ea9f1fcdeb9c13af022ac0f18879798eb7715aabd93446630dd0b9e3e9c3c1e31114657623c9c932502b99f41c1f3c52ede0306311f729810366ed71
SSDEEP

49152:y4bKFBaK648EFZ6hBYiYsQvoQhTnAYD6Xa:yOK+AZIBYi/coQl

Score

10^/10

webmonitor backdoor infostealer rat

Malware Config

Extracted

Family

webmonitor

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/5076-36-0x0000000000400000-0x00000000004F3000-memory.dmp	family_webmonitor
behavioral2/memory/5076-46-0x0000000000400000-0x00000000004F3000-memory.dmp	family_webmonitor
behavioral2/memory/5076-40-0x0000000000400000-0x00000000004F3000-memory.dmp	family_webmonitor
behavioral2/memory/5076-53-0x0000000000400000-0x00000000004F3000-memory.dmp	family_webmonitor
behavioral2/memory/5076-130-0x0000000000400000-0x00000000004F3000-memory.dmp	family_webmonitor

CustAttr .NET packer 1 IoCs

Detects CustAttr .NET packer in memory.

Processes:

resource	yara_rule
behavioral2/memory/4200-8-0x0000000005120000-0x0000000005132000-memory.dmp	CustAttr

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:

a3a62c034f2eb97d3673d2a608073f7e.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1712835645-2080934712-2142796781-1000\Control Panel\International\Geo\Nation	a3a62c034f2eb97d3673d2a608073f7e.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

a3a62c034f2eb97d3673d2a608073f7e.exe

description pid process target process

PID 4200 set thread context of 5076 4200 a3a62c034f2eb97d3673d2a608073f7e.exe RegSvcs.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

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/Job
T1053

Processes:

schtasks.exe

pid process

2932 schtasks.exe

description	pid	process	target process
PID 4200 set thread context of 5076	4200	a3a62c034f2eb97d3673d2a608073f7e.exe	RegSvcs.exe

pid	process
2932	schtasks.exe

Suspicious behavior: EnumeratesProcesses 7 IoCs

Processes:

powershell.exepowershell.exea3a62c034f2eb97d3673d2a608073f7e.exepowershell.exe

pid	process
4240	powershell.exe
1788	powershell.exe
4200	a3a62c034f2eb97d3673d2a608073f7e.exe
5052	powershell.exe
1788	powershell.exe
4240	powershell.exe
5052	powershell.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

Processes:

powershell.exepowershell.exea3a62c034f2eb97d3673d2a608073f7e.exepowershell.exeRegSvcs.exe

description	pid	process
Token: SeDebugPrivilege	1788	powershell.exe
Token: SeDebugPrivilege	4240	powershell.exe
Token: SeDebugPrivilege	4200	a3a62c034f2eb97d3673d2a608073f7e.exe
Token: SeDebugPrivilege	5052	powershell.exe
Token: SeShutdownPrivilege	5076	RegSvcs.exe
Token: SeCreatePagefilePrivilege	5076	RegSvcs.exe

Suspicious use of WriteProcessMemory 24 IoCs

Processes:

a3a62c034f2eb97d3673d2a608073f7e.exeRegSvcs.exe

description	pid	process	target process
PID 4200 wrote to memory of 1788	4200	a3a62c034f2eb97d3673d2a608073f7e.exe	powershell.exe
PID 4200 wrote to memory of 1788	4200	a3a62c034f2eb97d3673d2a608073f7e.exe	powershell.exe
PID 4200 wrote to memory of 1788	4200	a3a62c034f2eb97d3673d2a608073f7e.exe	powershell.exe
PID 4200 wrote to memory of 4240	4200	a3a62c034f2eb97d3673d2a608073f7e.exe	powershell.exe
PID 4200 wrote to memory of 4240	4200	a3a62c034f2eb97d3673d2a608073f7e.exe	powershell.exe
PID 4200 wrote to memory of 4240	4200	a3a62c034f2eb97d3673d2a608073f7e.exe	powershell.exe
PID 4200 wrote to memory of 2932	4200	a3a62c034f2eb97d3673d2a608073f7e.exe	schtasks.exe
PID 4200 wrote to memory of 2932	4200	a3a62c034f2eb97d3673d2a608073f7e.exe	schtasks.exe
PID 4200 wrote to memory of 2932	4200	a3a62c034f2eb97d3673d2a608073f7e.exe	schtasks.exe
PID 4200 wrote to memory of 5052	4200	a3a62c034f2eb97d3673d2a608073f7e.exe	powershell.exe
PID 4200 wrote to memory of 5052	4200	a3a62c034f2eb97d3673d2a608073f7e.exe	powershell.exe
PID 4200 wrote to memory of 5052	4200	a3a62c034f2eb97d3673d2a608073f7e.exe	powershell.exe
PID 4200 wrote to memory of 5076	4200	a3a62c034f2eb97d3673d2a608073f7e.exe	RegSvcs.exe
PID 4200 wrote to memory of 5076	4200	a3a62c034f2eb97d3673d2a608073f7e.exe	RegSvcs.exe
PID 4200 wrote to memory of 5076	4200	a3a62c034f2eb97d3673d2a608073f7e.exe	RegSvcs.exe
PID 4200 wrote to memory of 5076	4200	a3a62c034f2eb97d3673d2a608073f7e.exe	RegSvcs.exe
PID 4200 wrote to memory of 5076	4200	a3a62c034f2eb97d3673d2a608073f7e.exe	RegSvcs.exe
PID 4200 wrote to memory of 5076	4200	a3a62c034f2eb97d3673d2a608073f7e.exe	RegSvcs.exe
PID 4200 wrote to memory of 5076	4200	a3a62c034f2eb97d3673d2a608073f7e.exe	RegSvcs.exe
PID 4200 wrote to memory of 5076	4200	a3a62c034f2eb97d3673d2a608073f7e.exe	RegSvcs.exe
PID 4200 wrote to memory of 5076	4200	a3a62c034f2eb97d3673d2a608073f7e.exe	RegSvcs.exe
PID 5076 wrote to memory of 4716	5076	RegSvcs.exe	cmd.exe
PID 5076 wrote to memory of 4716	5076	RegSvcs.exe	cmd.exe
PID 5076 wrote to memory of 4716	5076	RegSvcs.exe	cmd.exe

C:\Users\Admin\AppData\Local\Temp\a3a62c034f2eb97d3673d2a608073f7e.exe
"C:\Users\Admin\AppData\Local\Temp\a3a62c034f2eb97d3673d2a608073f7e.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4200
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\a3a62c034f2eb97d3673d2a608073f7e.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1788
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\CJFickSnic.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4240
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\CJFickSnic" /XML "C:\Users\Admin\AppData\Local\Temp\tmpCE9A.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:2932
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\CJFickSnic.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:5052
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:5076
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\PCgKQ8W5m9SreNpT.bat" "
    3⤵
    PID:4716

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Persistence

Scheduled Task/Job

T1053

Privilege Escalation

Scheduled Task/Job

T1053

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log

Filesize
2KB

MD5
3d086a433708053f9bf9523e1d87a4e8

SHA1
b3ab5d4f282a4c8fe8c3005b8a557ed5a0e37f28

SHA256
6f8fd1b8d9788ad54eaeee329232187e24b7b43393a01aeba2d6e9675231fb69

SHA512
931ae42b4c68a4507ff2342332b08eb407050d47cf4176137ea022d0f6e513c689e998445a04c6d18d4877391705c586bfce0234632b898d41aaed0957996dfd

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
18KB

MD5
02340830faca39cb9919e5abee72c14c

SHA1
ab82ce4d19a88cceb9742fb365c89de03f155264

SHA256
469db7786462c7502d210fff68339ba5328541322cca11128d8f6e7887782ed7

SHA512
a38283c1cb21a868fe5ac655aea83e1cb4cba645e9fe55401ebc0742deca550d056ed850803310d9c91acb314d79ceb431b1a548669da233119aca9a4ed42c7d

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
18KB

MD5
30fa1a862f1a94e6d645aacb65b99d7e

SHA1
07d3ca9d734ba76cdf6ef1d79f125b0452049b73

SHA256
e0c2e328c0529ec808d1237e32fb6e60eee3bde0ffb1acb1c6372f27f2c42600

SHA512
eac4c14e20079919b65aca61d24b1bf1bd0395846df8bd39a79f371cb89b962a30e9505168ba5db889913e20ff3451ff26ffc85e725350f0f5660976b9ffd469

Download Submit
C:\Users\Admin\AppData\Local\Temp\PCgKQ8W5m9SreNpT.bat

Filesize
204B

MD5
4071a05531d1527a295bf04a6dcf9a15

SHA1
551b90187815e3fad244e5bdf1f6abe8c0648887

SHA256
90ce233b098aabec3f1cb781e84854161ed69bbeb5eb4040c058dc46c8944706

SHA512
53cda37b4e36b5ac2cf0278d6ab6d1a9902f6a0df015a6dd0f09f822ccf7c0135943dca63cc5e75740a3c6ec834ba0d0945b2b99cbfe901d154390dfec558b14

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_nhqj5uar.r3o.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpCE9A.tmp

Filesize
1KB

MD5
1e7f257aa7ef0721cf9d40ad70c65eb1

SHA1
163a97592f27d05721d40f2bbda8f8ef4f0c3226

SHA256
5339bb714db86e51e1aaa81538aae4fcf52f18c7e73d1d45b90c1bd286c1afd1

SHA512
1377ba20744f94370a68fb68081e230add5d7a5f655285e6f5911b93bd691e84c4792bc76ad34b4a846206788c05173d880856f3ac57154da59dd7ad704f42e3

Download Submit
memory/1788-66-0x00000000060B0000-0x00000000060CE000-memory.dmp

Filesize
120KB

Download
memory/1788-19-0x0000000002790000-0x00000000027A0000-memory.dmp

Filesize
64KB

Download
memory/1788-97-0x00000000073F0000-0x000000000740A000-memory.dmp

Filesize
104KB

Download
memory/1788-113-0x0000000007620000-0x000000000762E000-memory.dmp

Filesize
56KB

Download
memory/1788-93-0x0000000007290000-0x0000000007333000-memory.dmp

Filesize
652KB

Download
memory/1788-47-0x0000000005CA0000-0x0000000005FF4000-memory.dmp

Filesize
3.3MB

Download
memory/1788-114-0x0000000007630000-0x0000000007644000-memory.dmp

Filesize
80KB

Download
memory/1788-17-0x00000000027E0000-0x0000000002816000-memory.dmp

Filesize
216KB

Download
memory/1788-18-0x00000000746D0000-0x0000000074E80000-memory.dmp

Filesize
7.7MB

Download
memory/1788-96-0x0000000007A30000-0x00000000080AA000-memory.dmp

Filesize
6.5MB

Download
memory/1788-21-0x0000000002790000-0x00000000027A0000-memory.dmp

Filesize
64KB

Download
memory/1788-20-0x0000000005250000-0x0000000005878000-memory.dmp

Filesize
6.2MB

Download
memory/1788-115-0x0000000007730000-0x000000000774A000-memory.dmp

Filesize
104KB

Download
memory/1788-67-0x0000000006510000-0x000000000655C000-memory.dmp

Filesize
304KB

Download
memory/1788-70-0x0000000074F60000-0x0000000074FAC000-memory.dmp

Filesize
304KB

Download
memory/1788-25-0x0000000005220000-0x0000000005242000-memory.dmp

Filesize
136KB

Download
memory/1788-72-0x000000007F630000-0x000000007F640000-memory.dmp

Filesize
64KB

Download
memory/1788-123-0x00000000746D0000-0x0000000074E80000-memory.dmp

Filesize
7.7MB

Download
memory/1788-95-0x0000000002790000-0x00000000027A0000-memory.dmp

Filesize
64KB

Download
memory/1788-82-0x0000000006670000-0x000000000668E000-memory.dmp

Filesize
120KB

Download
memory/4200-10-0x0000000004DC0000-0x0000000004DD0000-memory.dmp

Filesize
64KB

Download
memory/4200-12-0x0000000006A20000-0x0000000006B14000-memory.dmp

Filesize
976KB

Download
memory/4200-11-0x00000000067D0000-0x000000000690C000-memory.dmp

Filesize
1.2MB

Download
memory/4200-9-0x00000000746D0000-0x0000000074E80000-memory.dmp

Filesize
7.7MB

Download
memory/4200-52-0x00000000746D0000-0x0000000074E80000-memory.dmp

Filesize
7.7MB

Download
memory/4200-0-0x0000000000090000-0x000000000026A000-memory.dmp

Filesize
1.9MB

Download
memory/4200-8-0x0000000005120000-0x0000000005132000-memory.dmp

Filesize
72KB

Download
memory/4200-7-0x0000000004F80000-0x0000000004FD6000-memory.dmp

Filesize
344KB

Download
memory/4200-6-0x0000000004B50000-0x0000000004B5A000-memory.dmp

Filesize
40KB

Download
memory/4200-5-0x0000000004DC0000-0x0000000004DD0000-memory.dmp

Filesize
64KB

Download
memory/4200-4-0x0000000004C20000-0x0000000004CB2000-memory.dmp

Filesize
584KB

Download
memory/4200-3-0x00000000051D0000-0x0000000005774000-memory.dmp

Filesize
5.6MB

Download
memory/4200-2-0x0000000004B80000-0x0000000004C1C000-memory.dmp

Filesize
624KB

Download
memory/4200-1-0x00000000746D0000-0x0000000074E80000-memory.dmp

Filesize
7.7MB

Download
memory/4240-98-0x0000000007B80000-0x0000000007B8A000-memory.dmp

Filesize
40KB

Download
memory/4240-94-0x0000000002EB0000-0x0000000002EC0000-memory.dmp

Filesize
64KB

Download
memory/4240-91-0x0000000002EB0000-0x0000000002EC0000-memory.dmp

Filesize
64KB

Download
memory/4240-71-0x0000000074F60000-0x0000000074FAC000-memory.dmp

Filesize
304KB

Download
memory/4240-69-0x000000007F680000-0x000000007F690000-memory.dmp

Filesize
64KB

Download
memory/4240-68-0x0000000007970000-0x00000000079A2000-memory.dmp

Filesize
200KB

Download
memory/4240-23-0x00000000746D0000-0x0000000074E80000-memory.dmp

Filesize
7.7MB

Download
memory/4240-24-0x0000000002EB0000-0x0000000002EC0000-memory.dmp

Filesize
64KB

Download
memory/4240-37-0x00000000059E0000-0x0000000005A46000-memory.dmp

Filesize
408KB

Download
memory/4240-38-0x00000000062E0000-0x0000000006346000-memory.dmp

Filesize
408KB

Download
memory/4240-119-0x00000000746D0000-0x0000000074E80000-memory.dmp

Filesize
7.7MB

Download
memory/4240-116-0x0000000007E30000-0x0000000007E38000-memory.dmp

Filesize
32KB

Download
memory/4240-111-0x0000000007D90000-0x0000000007E26000-memory.dmp

Filesize
600KB

Download
memory/4240-112-0x0000000007D10000-0x0000000007D21000-memory.dmp

Filesize
68KB

Download
memory/5052-55-0x0000000002220000-0x0000000002230000-memory.dmp

Filesize
64KB

Download
memory/5052-110-0x0000000002220000-0x0000000002230000-memory.dmp

Filesize
64KB

Download
memory/5052-99-0x000000007F3B0000-0x000000007F3C0000-memory.dmp

Filesize
64KB

Download
memory/5052-100-0x0000000074F60000-0x0000000074FAC000-memory.dmp

Filesize
304KB

Download
memory/5052-54-0x00000000746D0000-0x0000000074E80000-memory.dmp

Filesize
7.7MB

Download
memory/5052-126-0x00000000746D0000-0x0000000074E80000-memory.dmp

Filesize
7.7MB

Download
memory/5052-56-0x0000000002220000-0x0000000002230000-memory.dmp

Filesize
64KB

Download
memory/5076-53-0x0000000000400000-0x00000000004F3000-memory.dmp

Filesize
972KB

Download
memory/5076-40-0x0000000000400000-0x00000000004F3000-memory.dmp

Filesize
972KB

Download
memory/5076-46-0x0000000000400000-0x00000000004F3000-memory.dmp

Filesize
972KB

Download
memory/5076-36-0x0000000000400000-0x00000000004F3000-memory.dmp

Filesize
972KB

Download
memory/5076-130-0x0000000000400000-0x00000000004F3000-memory.dmp

Filesize
972KB

Download