webmonitor | e0fb9bf9bd903a2ea4bc952b168482bd15af73dd1b4ae47529aa10fe6a9112a0

General

Target

fe4f22e8d5f3a4b2bcd81bd69429c12b.exe
Size

2.0MB
MD5

fe4f22e8d5f3a4b2bcd81bd69429c12b
SHA1

50eec07da09636ab7108e93a2a17224724d5f8c2
SHA256

e0fb9bf9bd903a2ea4bc952b168482bd15af73dd1b4ae47529aa10fe6a9112a0
SHA512

6295463804ae0b84e90a6dc04d4a673fce7eea5c8f3a9017aae52eb4ea6c0a522e94fe8f9b5403cd42449a78aac438d0d53e44457581d67c4cd94886054b0ef2

Score

10^/10

webmonitor backdoor infostealer persistence rat suricata upx

Malware Config

Signatures

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1004

Modify Registry

T1112

Processes:

regasm.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,\"C:\\Users\\Admin\\AppData\\Roaming\\stream.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 1 IoCs

Processes:

resource	yara_rule
behavioral2/memory/2276-141-0x00000000005F5A70-mapping.dmp	family_webmonitor

suricata: ET MALWARE WebMonitor/RevCode RAT CnC Domain in DNS Lookup
suricata
Executes dropped EXE 3 IoCs

Processes:

Anyname.exePatch.exeMSBuild.exe

pid process

3732 Anyname.exe
640 Patch.exe
2276 MSBuild.exe

pid	process
3732	Anyname.exe
640	Patch.exe
2276	MSBuild.exe

UPX packed file 4 IoCs

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

upx

Processes:

resource	yara_rule
C:\ProgramData\Anyname.exe	upx
C:\ProgramData\Anyname.exe	upx
behavioral2/memory/2276-140-0x0000000000400000-0x00000000005F7000-memory.dmp	upx
behavioral2/memory/2276-143-0x0000000000400000-0x00000000005F7000-memory.dmp	upx

Loads dropped DLL 1 IoCs

Processes:

Patch.exe

pid process

640 Patch.exe

pid	process
640	Patch.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

fe4f22e8d5f3a4b2bcd81bd69429c12b.exeregasm.exe

description	pid	process	target process
PID 860 set thread context of 576	860	fe4f22e8d5f3a4b2bcd81bd69429c12b.exe	regasm.exe
PID 576 set thread context of 2276	576	regasm.exe	MSBuild.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: EnumeratesProcesses 2 IoCs

Processes:

regasm.exe

pid process

576 regasm.exe
576 regasm.exe
Suspicious behavior: MapViewOfSection 2 IoCs

Processes:

fe4f22e8d5f3a4b2bcd81bd69429c12b.exe

pid process

860 fe4f22e8d5f3a4b2bcd81bd69429c12b.exe
860 fe4f22e8d5f3a4b2bcd81bd69429c12b.exe

pid	process
576	regasm.exe
576	regasm.exe

pid	process
860	fe4f22e8d5f3a4b2bcd81bd69429c12b.exe
860	fe4f22e8d5f3a4b2bcd81bd69429c12b.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

Processes:

regasm.exeMSBuild.exe

description	pid	process
Token: SeDebugPrivilege	576	regasm.exe
Token: SeDebugPrivilege	2276	MSBuild.exe
Token: SeShutdownPrivilege	2276	MSBuild.exe
Token: SeCreatePagefilePrivilege	2276	MSBuild.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

fe4f22e8d5f3a4b2bcd81bd69429c12b.exe

pid process

860 fe4f22e8d5f3a4b2bcd81bd69429c12b.exe

pid	process
860	fe4f22e8d5f3a4b2bcd81bd69429c12b.exe

Suspicious use of WriteProcessMemory 21 IoCs

Processes:

fe4f22e8d5f3a4b2bcd81bd69429c12b.exeAnyname.exeregasm.exe

description	pid	process	target process
PID 860 wrote to memory of 3732	860	fe4f22e8d5f3a4b2bcd81bd69429c12b.exe	Anyname.exe
PID 860 wrote to memory of 3732	860	fe4f22e8d5f3a4b2bcd81bd69429c12b.exe	Anyname.exe
PID 860 wrote to memory of 3732	860	fe4f22e8d5f3a4b2bcd81bd69429c12b.exe	Anyname.exe
PID 3732 wrote to memory of 640	3732	Anyname.exe	Patch.exe
PID 3732 wrote to memory of 640	3732	Anyname.exe	Patch.exe
PID 3732 wrote to memory of 640	3732	Anyname.exe	Patch.exe
PID 860 wrote to memory of 2424	860	fe4f22e8d5f3a4b2bcd81bd69429c12b.exe	regasm.exe
PID 860 wrote to memory of 2424	860	fe4f22e8d5f3a4b2bcd81bd69429c12b.exe	regasm.exe
PID 860 wrote to memory of 2424	860	fe4f22e8d5f3a4b2bcd81bd69429c12b.exe	regasm.exe
PID 860 wrote to memory of 2424	860	fe4f22e8d5f3a4b2bcd81bd69429c12b.exe	regasm.exe
PID 860 wrote to memory of 576	860	fe4f22e8d5f3a4b2bcd81bd69429c12b.exe	regasm.exe
PID 860 wrote to memory of 576	860	fe4f22e8d5f3a4b2bcd81bd69429c12b.exe	regasm.exe
PID 860 wrote to memory of 576	860	fe4f22e8d5f3a4b2bcd81bd69429c12b.exe	regasm.exe
PID 860 wrote to memory of 576	860	fe4f22e8d5f3a4b2bcd81bd69429c12b.exe	regasm.exe
PID 576 wrote to memory of 2276	576	regasm.exe	MSBuild.exe
PID 576 wrote to memory of 2276	576	regasm.exe	MSBuild.exe
PID 576 wrote to memory of 2276	576	regasm.exe	MSBuild.exe
PID 576 wrote to memory of 2276	576	regasm.exe	MSBuild.exe
PID 576 wrote to memory of 2276	576	regasm.exe	MSBuild.exe
PID 576 wrote to memory of 2276	576	regasm.exe	MSBuild.exe
PID 576 wrote to memory of 2276	576	regasm.exe	MSBuild.exe

C:\Users\Admin\AppData\Local\Temp\fe4f22e8d5f3a4b2bcd81bd69429c12b.exe
"C:\Users\Admin\AppData\Local\Temp\fe4f22e8d5f3a4b2bcd81bd69429c12b.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:860
- C:\ProgramData\Anyname.exe
  "C:\ProgramData\Anyname.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of WriteProcessMemory
  PID:3732
- - C:\Users\Admin\AppData\Local\Temp\Patch.exe
    Patch.exe /silent
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    PID:640
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe"
  2⤵
  PID:2424
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe"
  2⤵
  - Modifies WinLogon for persistence
  - Suspicious use of SetThreadContext
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:576
- - C:\Users\Admin\AppData\Local\Temp\MSBuild.exe
    C:\Users\Admin\AppData\Local\Temp\MSBuild.exe
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    PID:2276

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

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Downloads

C:\ProgramData\Anyname.exe

MD5
40142677d0bb0ecaad6f45521581a8e3

SHA1
b107dea7dc8ec3d53769484173bf59b24a3a526a

SHA256
8592243aeb23282bb68e22aee5f3aa19288d289c554e6318ff92b3bb80fb2e24

SHA512
fa0a0e0e13f59f6169ad417842b04aa3fa66376a585995d9d1737fb655c46d44e2183209e1266909568c8f80ae9d6e43368d461f3d40be432f683ba2b7048e59

Download Submit
C:\ProgramData\Anyname.exe

MD5
40142677d0bb0ecaad6f45521581a8e3

SHA1
b107dea7dc8ec3d53769484173bf59b24a3a526a

SHA256
8592243aeb23282bb68e22aee5f3aa19288d289c554e6318ff92b3bb80fb2e24

SHA512
fa0a0e0e13f59f6169ad417842b04aa3fa66376a585995d9d1737fb655c46d44e2183209e1266909568c8f80ae9d6e43368d461f3d40be432f683ba2b7048e59

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

MD5
9af17c8393f0970ee5136bd3ffa27001

SHA1
4b285b72c1a11285a25f31f2597e090da6bbc049

SHA256
71d6a7a3fe5f8dc878cd5bdeca0e09177efb85c01e9a8a10a95262cabefaa019

SHA512
b90f7de7d5ce72dccb264c7ba609e173c529b9d99ed9a63f88632bc58b1a994bbb727365f519c73b979f8918bd6de3c39a9f0347eb3a4bccdce4b2772a6516a3

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

MD5
c8ecc6d21f0d96f5adb10ba0fad59327

SHA1
63f5f489890b0ea90327a551787120bc71559aed

SHA256
e652438962d628a62456c778b1693390423223dd12f5c233e361c5c5273ecec0

SHA512
27618145d7fabefae7f2fdd56b9b3d0ea6c624a6d6e833bff52bf2d87210b73536052640b39d3419808d02a7c7829b589292087f154ed494145b54ef1fab621a

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

MD5
c8ecc6d21f0d96f5adb10ba0fad59327

SHA1
63f5f489890b0ea90327a551787120bc71559aed

SHA256
e652438962d628a62456c778b1693390423223dd12f5c233e361c5c5273ecec0

SHA512
27618145d7fabefae7f2fdd56b9b3d0ea6c624a6d6e833bff52bf2d87210b73536052640b39d3419808d02a7c7829b589292087f154ed494145b54ef1fab621a

Download Submit
\Users\Admin\AppData\Local\Temp\dup2patcher.dll

MD5
f6a5ee057facebdbe0f7fcc684408bfe

SHA1
2481e7f2051d4563bdb161acc045c4a12054b9e0

SHA256
0716d3af51df49db26fa4856fbf219e23d2ae3ffe25272669c8cb5b527fbb6bf

SHA512
8153a568ea1f1f954721af33366ae81c00eb9950070004b5e5e2942073be9d6de012fe8233331c9f792f080442d973dd1713823bb6abb0ba0b55af544f6a10a8

Download Submit
memory/576-126-0x0000000000400000-0x000000000057B000-memory.dmp

Filesize
1.5MB

Download
memory/576-133-0x00000000057B0000-0x00000000057B1000-memory.dmp

Filesize
4KB

Download
memory/576-139-0x0000000007460000-0x00000000074DC000-memory.dmp

Filesize
496KB

Download
memory/576-125-0x000000000055389E-mapping.dmp

Download
memory/576-134-0x0000000007160000-0x0000000007252000-memory.dmp

Filesize
968KB

Download
memory/576-127-0x0000000001130000-0x00000000011DE000-memory.dmp

Filesize
696KB

Download
memory/576-130-0x0000000005B60000-0x0000000005B61000-memory.dmp

Filesize
4KB

Download
memory/576-131-0x0000000005710000-0x0000000005711000-memory.dmp

Filesize
4KB

Download
memory/576-132-0x0000000005660000-0x0000000005B5E000-memory.dmp

Filesize
5.0MB

Download
memory/640-120-0x0000000000000000-mapping.dmp

Download
memory/860-116-0x00000000007A0000-0x00000000007A1000-memory.dmp

Filesize
4KB

Download
memory/860-124-0x00000000024F0000-0x00000000024F8000-memory.dmp

Filesize
32KB

Download
memory/2276-140-0x0000000000400000-0x00000000005F7000-memory.dmp

Filesize
2.0MB

Download
memory/2276-141-0x00000000005F5A70-mapping.dmp

Download
memory/2276-143-0x0000000000400000-0x00000000005F7000-memory.dmp

Filesize
2.0MB

Download
memory/2276-144-0x00000000038B0000-0x00000000048B0000-memory.dmp

Filesize
16.0MB

Download
memory/3732-117-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads