webmonitor | bdc5cb40d2d655865ed182688f4cb623c545dd9875c6198bf16d616e53c52eb0

General

Target

1502cb8a7caf4853614f9fd8f860631e.exe
Size

721KB
MD5

1502cb8a7caf4853614f9fd8f860631e
SHA1

813dc57d206536db600a16f8a5da362240cb8516
SHA256

bdc5cb40d2d655865ed182688f4cb623c545dd9875c6198bf16d616e53c52eb0
SHA512

fa4c28bb760aabba20e7dbf98fe093687cd18c072bca07ed650c01fdee2c498bc8a89e2a6b41a6ca72762d7a2616e207562ee5f3b253fe375b8ff239294bef08

Score

10^/10

webmonitor backdoor infostealer persistence rat upx

Malware Config

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 1 IoCs

resource	yara_rule
behavioral2/memory/3884-124-0x00000000004E7F50-mapping.dmp	family_webmonitor

Executes dropped EXE 1 IoCs

pid	Process
4016	despacito.exe

UPX packed file 2 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3884-123-0x0000000000400000-0x00000000004EA000-memory.dmp	upx
behavioral2/memory/3884-125-0x0000000000400000-0x00000000004EA000-memory.dmp	upx

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\Software\Microsoft\Windows\CurrentVersion\Run\updator = "C:\\Users\\Admin\\Music\\despacito.exe -boot"	despacito.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4016 set thread context of 3884	4016	despacito.exe	84

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 4 IoCs

pid	Process
4016	despacito.exe
4016	despacito.exe
4016	despacito.exe
4016	despacito.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	660	1502cb8a7caf4853614f9fd8f860631e.exe
Token: SeDebugPrivilege	4016	despacito.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 660 wrote to memory of 704	660	1502cb8a7caf4853614f9fd8f860631e.exe	78
PID 660 wrote to memory of 704	660	1502cb8a7caf4853614f9fd8f860631e.exe	78
PID 660 wrote to memory of 704	660	1502cb8a7caf4853614f9fd8f860631e.exe	78
PID 660 wrote to memory of 2236	660	1502cb8a7caf4853614f9fd8f860631e.exe	80
PID 660 wrote to memory of 2236	660	1502cb8a7caf4853614f9fd8f860631e.exe	80
PID 660 wrote to memory of 2236	660	1502cb8a7caf4853614f9fd8f860631e.exe	80
PID 3688 wrote to memory of 4016	3688	explorer.exe	82
PID 3688 wrote to memory of 4016	3688	explorer.exe	82
PID 3688 wrote to memory of 4016	3688	explorer.exe	82
PID 4016 wrote to memory of 3884	4016	despacito.exe	84
PID 4016 wrote to memory of 3884	4016	despacito.exe	84
PID 4016 wrote to memory of 3884	4016	despacito.exe	84
PID 4016 wrote to memory of 3884	4016	despacito.exe	84
PID 4016 wrote to memory of 3884	4016	despacito.exe	84
PID 4016 wrote to memory of 3884	4016	despacito.exe	84
PID 4016 wrote to memory of 3884	4016	despacito.exe	84

C:\Users\Admin\AppData\Local\Temp\1502cb8a7caf4853614f9fd8f860631e.exe
"C:\Users\Admin\AppData\Local\Temp\1502cb8a7caf4853614f9fd8f860631e.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:660
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c copy "C:\Users\Admin\AppData\Local\Temp\1502cb8a7caf4853614f9fd8f860631e.exe" "C:\Users\Admin\Music\despacito.exe"
  2⤵
  PID:704
- C:\Windows\SysWOW64\explorer.exe
  "C:\Windows\System32\explorer.exe" /c, "C:\Users\Admin\Music\despacito.exe"
  2⤵
  PID:2236

C:\Windows\explorer.exe
C:\Windows\explorer.exe /factory,{75dff2b7-6936-4c06-a8bb-676a7b00b24b} -Embedding
1⤵
- Suspicious use of WriteProcessMemory
PID:3688
- C:\Users\Admin\Music\despacito.exe
  "C:\Users\Admin\Music\despacito.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious use of SetThreadContext
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4016
- - C:\Windows\Microsoft.NET\Framework\v2.0.50727\AppLaunch.exe
    "C:\Windows\Microsoft.NET\Framework\v2.0.50727\AppLaunch.exe"
    3⤵
    PID:3884

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

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

memory/660-114-0x00000000012A0000-0x00000000012A1000-memory.dmp

Filesize
4KB

Download
memory/660-115-0x00000000012A1000-0x00000000012A2000-memory.dmp

Filesize
4KB

Download
memory/3884-123-0x0000000000400000-0x00000000004EA000-memory.dmp

Filesize
936KB

Download
memory/3884-125-0x0000000000400000-0x00000000004EA000-memory.dmp

Filesize
936KB

Download
memory/4016-121-0x00000000026D0000-0x00000000026D1000-memory.dmp

Filesize
4KB

Download
memory/4016-122-0x00000000026D1000-0x00000000026D2000-memory.dmp

Filesize
4KB

Download

Analysis

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