webmonitor | a902b091e859022ae263bab22a5cf75d5b892314c455752a2d9195d326537118

General

Target

a902b091e859022ae263bab22a5cf75d5b892314c455752a2d9195d326537118.exe
Size

2.9MB
MD5

87a119cb90e4c20d11fe569b9e26f0b6
SHA1

bf548af2eaf6272b3e7810b36595451542e5b4ba
SHA256

a902b091e859022ae263bab22a5cf75d5b892314c455752a2d9195d326537118
SHA512

c4ae15f80ee122c35694259e48155a69b5bdf4a7d1b4cf753cdb40dc6efd3833eb4b54afb087060ba51ec6c6f54c0d897df68fa5b26b1d4406ea6c568f6b213f

Score

10^/10

webmonitor backdoor infostealer persistence rat upx

Malware Config

Signatures

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "\"C:\\Users\\Admin\\AppData\\Roaming\\dd3gmioMwPer0i8R\\CEIhMJ7bP1oi.exe\",explorer.exe"	regasm.exe

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 2 IoCs

resource	yara_rule
behavioral1/memory/1524-98-0x0000000000400000-0x00000000005F7000-memory.dmp	family_webmonitor
behavioral1/memory/1524-99-0x0000000000400000-0x00000000005F7000-memory.dmp	family_webmonitor

Executes dropped EXE 1 IoCs

pid	Process
1376	Setup.exe

UPX packed file 8 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1524-88-0x0000000000400000-0x00000000005F7000-memory.dmp	upx
behavioral1/memory/1524-90-0x0000000000400000-0x00000000005F7000-memory.dmp	upx
behavioral1/memory/1524-91-0x0000000000400000-0x00000000005F7000-memory.dmp	upx
behavioral1/memory/1524-93-0x0000000000400000-0x00000000005F7000-memory.dmp	upx
behavioral1/memory/1524-94-0x0000000000400000-0x00000000005F7000-memory.dmp	upx
behavioral1/memory/1524-97-0x0000000000400000-0x00000000005F7000-memory.dmp	upx
behavioral1/memory/1524-98-0x0000000000400000-0x00000000005F7000-memory.dmp	upx
behavioral1/memory/1524-99-0x0000000000400000-0x00000000005F7000-memory.dmp	upx

Loads dropped DLL 2 IoCs

pid	Process
684	a902b091e859022ae263bab22a5cf75d5b892314c455752a2d9195d326537118.exe
1376	Setup.exe

Unexpected DNS network traffic destination 3 IoCs

Network traffic to other servers than the configured DNS servers was detected on the DNS port.

description	ioc
Destination IP	185.243.215.214
Destination IP	185.243.215.214
Destination IP	185.243.215.214

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 684 set thread context of 1204	684	a902b091e859022ae263bab22a5cf75d5b892314c455752a2d9195d326537118.exe	29
PID 1204 set thread context of 1524	1204	regasm.exe	30

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 24 IoCs

pid	Process
1376	Setup.exe
1376	Setup.exe
1376	Setup.exe
1376	Setup.exe
1376	Setup.exe
1376	Setup.exe
1376	Setup.exe
1376	Setup.exe
1376	Setup.exe
1376	Setup.exe
1376	Setup.exe
1376	Setup.exe
1376	Setup.exe
1376	Setup.exe
1376	Setup.exe
1376	Setup.exe
1376	Setup.exe
1376	Setup.exe
1376	Setup.exe
1376	Setup.exe
1376	Setup.exe
1376	Setup.exe
1376	Setup.exe
1204	regasm.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
684	a902b091e859022ae263bab22a5cf75d5b892314c455752a2d9195d326537118.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	1376	Setup.exe
Token: SeDebugPrivilege	1204	regasm.exe
Token: SeDebugPrivilege	1524	AppLaunch.exe
Token: SeShutdownPrivilege	1524	AppLaunch.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
684	a902b091e859022ae263bab22a5cf75d5b892314c455752a2d9195d326537118.exe
1376	Setup.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 684 wrote to memory of 1376	684	a902b091e859022ae263bab22a5cf75d5b892314c455752a2d9195d326537118.exe	28
PID 684 wrote to memory of 1376	684	a902b091e859022ae263bab22a5cf75d5b892314c455752a2d9195d326537118.exe	28
PID 684 wrote to memory of 1376	684	a902b091e859022ae263bab22a5cf75d5b892314c455752a2d9195d326537118.exe	28
PID 684 wrote to memory of 1376	684	a902b091e859022ae263bab22a5cf75d5b892314c455752a2d9195d326537118.exe	28
PID 684 wrote to memory of 1376	684	a902b091e859022ae263bab22a5cf75d5b892314c455752a2d9195d326537118.exe	28
PID 684 wrote to memory of 1376	684	a902b091e859022ae263bab22a5cf75d5b892314c455752a2d9195d326537118.exe	28
PID 684 wrote to memory of 1376	684	a902b091e859022ae263bab22a5cf75d5b892314c455752a2d9195d326537118.exe	28
PID 684 wrote to memory of 1204	684	a902b091e859022ae263bab22a5cf75d5b892314c455752a2d9195d326537118.exe	29
PID 684 wrote to memory of 1204	684	a902b091e859022ae263bab22a5cf75d5b892314c455752a2d9195d326537118.exe	29
PID 684 wrote to memory of 1204	684	a902b091e859022ae263bab22a5cf75d5b892314c455752a2d9195d326537118.exe	29
PID 684 wrote to memory of 1204	684	a902b091e859022ae263bab22a5cf75d5b892314c455752a2d9195d326537118.exe	29
PID 684 wrote to memory of 1204	684	a902b091e859022ae263bab22a5cf75d5b892314c455752a2d9195d326537118.exe	29
PID 684 wrote to memory of 1204	684	a902b091e859022ae263bab22a5cf75d5b892314c455752a2d9195d326537118.exe	29
PID 684 wrote to memory of 1204	684	a902b091e859022ae263bab22a5cf75d5b892314c455752a2d9195d326537118.exe	29
PID 684 wrote to memory of 1204	684	a902b091e859022ae263bab22a5cf75d5b892314c455752a2d9195d326537118.exe	29
PID 1204 wrote to memory of 1524	1204	regasm.exe	30
PID 1204 wrote to memory of 1524	1204	regasm.exe	30
PID 1204 wrote to memory of 1524	1204	regasm.exe	30
PID 1204 wrote to memory of 1524	1204	regasm.exe	30
PID 1204 wrote to memory of 1524	1204	regasm.exe	30
PID 1204 wrote to memory of 1524	1204	regasm.exe	30
PID 1204 wrote to memory of 1524	1204	regasm.exe	30
PID 1204 wrote to memory of 1524	1204	regasm.exe	30
PID 1204 wrote to memory of 1524	1204	regasm.exe	30
PID 1204 wrote to memory of 1524	1204	regasm.exe	30
PID 1204 wrote to memory of 1524	1204	regasm.exe	30

C:\Users\Admin\AppData\Local\Temp\a902b091e859022ae263bab22a5cf75d5b892314c455752a2d9195d326537118.exe
"C:\Users\Admin\AppData\Local\Temp\a902b091e859022ae263bab22a5cf75d5b892314c455752a2d9195d326537118.exe"
1⤵
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:684
- C:\Users\Admin\AppData\Local\Temp\Setup.exe
  "C:\Users\Admin\AppData\Local\Temp\Setup.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:1376
- C:\Windows\Microsoft.NET\Framework\v2.0.50727\regasm.exe
  "C:\Windows\Microsoft.NET\Framework\v2.0.50727\regasm.exe"
  2⤵
  - Modifies WinLogon for persistence
  - Suspicious use of SetThreadContext
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1204
- - C:\Windows\Microsoft.NET\Framework\v2.0.50727\AppLaunch.exe
    "C:\Windows\Microsoft.NET\Framework\v2.0.50727\AppLaunch.exe"
    3⤵
    - Suspicious use of AdjustPrivilegeToken
    PID:1524

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Winlogon Helper DLL

1

T1004

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\Setup.exe

Filesize
1.5MB

MD5
d6972e3b20498bd9f03aa5a4193544a6

SHA1
3ffd0be5ae8b65470e5bc3c1acb847913539955d

SHA256
f3fa89eda7795d606f0e0deeb8d6ee0633def02f2fb6c5a7a177913a844be2ca

SHA512
a412b031f4ce0902d3f606a253bfc75f98d69a7e0d74b0e37db2994f91b74e425954b3f34542234fbd6d8f7737a698d879f85c855d4cc0c409e08304d0c42135

Download Submit
C:\Users\Admin\AppData\Local\Temp\Setup.exe

Filesize
1.5MB

MD5
d6972e3b20498bd9f03aa5a4193544a6

SHA1
3ffd0be5ae8b65470e5bc3c1acb847913539955d

SHA256
f3fa89eda7795d606f0e0deeb8d6ee0633def02f2fb6c5a7a177913a844be2ca

SHA512
a412b031f4ce0902d3f606a253bfc75f98d69a7e0d74b0e37db2994f91b74e425954b3f34542234fbd6d8f7737a698d879f85c855d4cc0c409e08304d0c42135

Download Submit
\Users\Admin\AppData\Local\SkinSoft\VisualStyler\2.4.59444.6\x86\ssapihook.dll

Filesize
57KB

MD5
9e7f44b8f1512476aa896e977c58830b

SHA1
eddd878d9e16502ee1eb7f583dd04e01b458ba42

SHA256
8e6195b50bb0d22e4d346263f708f166db726c84884fe78a6bb477caed19e708

SHA512
ea52b71dc58e081d0e6c1336e7bf8422d7240c8a502c790075c6ebfe88f8ff70cd2bf43d34b8c604c08d867202359f8bd35c3a0b8d2eefefe826ccd2e5c8c802

Download Submit
\Users\Admin\AppData\Local\Temp\Setup.exe

Filesize
1.5MB

MD5
d6972e3b20498bd9f03aa5a4193544a6

SHA1
3ffd0be5ae8b65470e5bc3c1acb847913539955d

SHA256
f3fa89eda7795d606f0e0deeb8d6ee0633def02f2fb6c5a7a177913a844be2ca

SHA512
a412b031f4ce0902d3f606a253bfc75f98d69a7e0d74b0e37db2994f91b74e425954b3f34542234fbd6d8f7737a698d879f85c855d4cc0c409e08304d0c42135

Download Submit
memory/684-70-0x00000000753B1000-0x00000000753B3000-memory.dmp

Filesize
8KB

Download
memory/684-62-0x00000000007DE000-0x00000000007E3000-memory.dmp

Filesize
20KB

Download
memory/684-65-0x00000000007DE000-0x00000000007E3000-memory.dmp

Filesize
20KB

Download
memory/684-69-0x00000000007DE000-0x00000000007E3000-memory.dmp

Filesize
20KB

Download
memory/684-68-0x00000000007DE000-0x00000000007E3000-memory.dmp

Filesize
20KB

Download
memory/684-71-0x00000000007DE000-0x00000000007E3000-memory.dmp

Filesize
20KB

Download
memory/684-60-0x00000000007DE000-0x00000000007E3000-memory.dmp

Filesize
20KB

Download
memory/684-66-0x00000000007DE000-0x00000000007E3000-memory.dmp

Filesize
20KB

Download
memory/684-56-0x00000000007DE000-0x00000000007E3000-memory.dmp

Filesize
20KB

Download
memory/684-63-0x00000000007DE000-0x00000000007E3000-memory.dmp

Filesize
20KB

Download
memory/684-59-0x00000000007DE000-0x00000000007E3000-memory.dmp

Filesize
20KB

Download
memory/684-76-0x00000000027B0000-0x00000000027B8000-memory.dmp

Filesize
32KB

Download
memory/1204-85-0x00000000011F6000-0x0000000001207000-memory.dmp

Filesize
68KB

Download
memory/1204-83-0x000000006F470000-0x000000006FA1B000-memory.dmp

Filesize
5.7MB

Download
memory/1204-82-0x0000000000400000-0x00000000004F9000-memory.dmp

Filesize
996KB

Download
memory/1376-78-0x00000000012C0000-0x0000000001450000-memory.dmp

Filesize
1.6MB

Download
memory/1376-79-0x0000000004F30000-0x0000000005030000-memory.dmp

Filesize
1024KB

Download
memory/1376-86-0x00000000050F5000-0x0000000005106000-memory.dmp

Filesize
68KB

Download
memory/1524-87-0x0000000000400000-0x00000000005F7000-memory.dmp

Filesize
2.0MB

Download
memory/1524-88-0x0000000000400000-0x00000000005F7000-memory.dmp

Filesize
2.0MB

Download
memory/1524-90-0x0000000000400000-0x00000000005F7000-memory.dmp

Filesize
2.0MB

Download
memory/1524-91-0x0000000000400000-0x00000000005F7000-memory.dmp

Filesize
2.0MB

Download
memory/1524-93-0x0000000000400000-0x00000000005F7000-memory.dmp

Filesize
2.0MB

Download
memory/1524-94-0x0000000000400000-0x00000000005F7000-memory.dmp

Filesize
2.0MB

Download
memory/1524-97-0x0000000000400000-0x00000000005F7000-memory.dmp

Filesize
2.0MB

Download
memory/1524-98-0x0000000000400000-0x00000000005F7000-memory.dmp

Filesize
2.0MB

Download
memory/1524-99-0x0000000000400000-0x00000000005F7000-memory.dmp

Filesize
2.0MB

Download
memory/1524-100-0x0000000002AD0000-0x0000000003AD0000-memory.dmp

Filesize
16.0MB

Download

Analysis

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