umbral | 712a0d5ea39f3325f80d76423fa07d8796bf0b75d35d69e8b32714d8836dfd50

Analysis

max time kernel
147s
max time network
142s
platform
windows11-21h2_x64
resource
win11-20240802-en
resource tags

arch:x64arch:x86image:win11-20240802-enlocale:en-usos:windows11-21h2-x64system
submitted
22/09/2024, 10:27

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target
SynsWaveV1.exe
Size 358KB
Sample240922-mg3lmavbpr
SHA256 712a0d5ea39f3325f80d76423fa07d8796bf0b75d35d69e8b32714d8836dfd50
MD5 fe2e1aa24f67aef8cca2a83269e49eb8
SHA1 22eff1e84d25f5daf052a046c4c6a66c37f63cc4
SHA512 97a7dc677ee2c8ca61729b2ec0532a2d59fb705d413c76f2f5b197053d15cd462a560038e49a75c4b76b3c9255a48690a97dfd7d89d81692c37a7547c6bad837
SSDEEP 6144:o5aLkSNxlSl2ZvRbTs6iG0GkBnTYQSeMMHg/dRS4Y83PUf0KrZUNsC:AfG+2ZRQ7GdynTYQSMAV44YGPNKraS
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

umbral xworm credential_access discovery execution persistence rat spyware stealer trojan

Malware Config

Extracted

Family

xworm

expected-schema.gl.at.ply.gg:2980

Attributes

Install_directory
%Userprofile%
install_file
USB.exe

Signatures

Detect Umbral payload 2 IoCs

resource	yara_rule
behavioral5/files/0x000500000002aa4a-6.dat	family_umbral
behavioral5/memory/224-21-0x000002A45C150000-0x000002A45C190000-memory.dmp	family_umbral

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral5/files/0x000300000002aab1-17.dat	family_xworm
behavioral5/memory/1968-30-0x00000000009D0000-0x00000000009EE000-memory.dmp	family_xworm

Umbral
Umbral stealer is an opensource moduler stealer written in C#.
stealer umbral
Xworm
Xworm is a remote access trojan written in C#.
trojan rat xworm
Credentials from Password Stores: Credentials from Web Browsers 1 TTPs
Malicious Access or copy of Web Browser Credential store.
credential_access stealer

Credentials from Web Browsers
T1555.003

Command and Scripting Interpreter: PowerShell 1 TTPs 8 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
1788	powershell.exe
4992	powershell.exe
2960	powershell.exe
2884	powershell.exe
1148	powershell.exe
4180	powershell.exe
2408	powershell.exe
1552	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	MISHA_litvin.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\RuntimeBroker.lnk	RuntimeBroker.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\RuntimeBroker.lnk	RuntimeBroker.exe

Executes dropped EXE 5 IoCs

pid	Process
224	MISHA_litvin.exe
1968	RuntimeBroker.exe
4936	SynsWave.exe
460	RuntimeBroker
1096	RuntimeBroker

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-242286936-336880687-2152680090-1000\Software\Microsoft\Windows\CurrentVersion\Run\RuntimeBroker = "C:\\Users\\Admin\\RuntimeBroker"	RuntimeBroker.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service

T1102

flow	ioc
1	discord.com
7	discord.com

Looks up external IP address via web service 2 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
1	ip-api.com
4	ip-api.com

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

System Information Discovery
T1082

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 2 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
4908	cmd.exe
4920	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
1800	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
4920	PING.EXE

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
1980	schtasks.exe

Suspicious behavior: EnumeratesProcesses 20 IoCs

pid	Process
224	MISHA_litvin.exe
2960	powershell.exe
2960	powershell.exe
4180	powershell.exe
4180	powershell.exe
2408	powershell.exe
2408	powershell.exe
884	powershell.exe
884	powershell.exe
2884	powershell.exe
2884	powershell.exe
1148	powershell.exe
1552	powershell.exe
1148	powershell.exe
1552	powershell.exe
1788	powershell.exe
1788	powershell.exe
4992	powershell.exe
4992	powershell.exe
1968	RuntimeBroker.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	1968	RuntimeBroker.exe
Token: SeDebugPrivilege	224	MISHA_litvin.exe
Token: SeIncreaseQuotaPrivilege	4756	wmic.exe
Token: SeSecurityPrivilege	4756	wmic.exe
Token: SeTakeOwnershipPrivilege	4756	wmic.exe
Token: SeLoadDriverPrivilege	4756	wmic.exe
Token: SeSystemProfilePrivilege	4756	wmic.exe
Token: SeSystemtimePrivilege	4756	wmic.exe
Token: SeProfSingleProcessPrivilege	4756	wmic.exe
Token: SeIncBasePriorityPrivilege	4756	wmic.exe
Token: SeCreatePagefilePrivilege	4756	wmic.exe
Token: SeBackupPrivilege	4756	wmic.exe
Token: SeRestorePrivilege	4756	wmic.exe
Token: SeShutdownPrivilege	4756	wmic.exe
Token: SeDebugPrivilege	4756	wmic.exe
Token: SeSystemEnvironmentPrivilege	4756	wmic.exe
Token: SeRemoteShutdownPrivilege	4756	wmic.exe
Token: SeUndockPrivilege	4756	wmic.exe
Token: SeManageVolumePrivilege	4756	wmic.exe
Token: 33	4756	wmic.exe
Token: 34	4756	wmic.exe
Token: 35	4756	wmic.exe
Token: 36	4756	wmic.exe
Token: SeIncreaseQuotaPrivilege	4756	wmic.exe
Token: SeSecurityPrivilege	4756	wmic.exe
Token: SeTakeOwnershipPrivilege	4756	wmic.exe
Token: SeLoadDriverPrivilege	4756	wmic.exe
Token: SeSystemProfilePrivilege	4756	wmic.exe
Token: SeSystemtimePrivilege	4756	wmic.exe
Token: SeProfSingleProcessPrivilege	4756	wmic.exe
Token: SeIncBasePriorityPrivilege	4756	wmic.exe
Token: SeCreatePagefilePrivilege	4756	wmic.exe
Token: SeBackupPrivilege	4756	wmic.exe
Token: SeRestorePrivilege	4756	wmic.exe
Token: SeShutdownPrivilege	4756	wmic.exe
Token: SeDebugPrivilege	4756	wmic.exe
Token: SeSystemEnvironmentPrivilege	4756	wmic.exe
Token: SeRemoteShutdownPrivilege	4756	wmic.exe
Token: SeUndockPrivilege	4756	wmic.exe
Token: SeManageVolumePrivilege	4756	wmic.exe
Token: 33	4756	wmic.exe
Token: 34	4756	wmic.exe
Token: 35	4756	wmic.exe
Token: 36	4756	wmic.exe
Token: SeDebugPrivilege	2960	powershell.exe
Token: SeDebugPrivilege	4180	powershell.exe
Token: SeDebugPrivilege	2408	powershell.exe
Token: SeDebugPrivilege	884	powershell.exe
Token: SeIncreaseQuotaPrivilege	1948	wmic.exe
Token: SeSecurityPrivilege	1948	wmic.exe
Token: SeTakeOwnershipPrivilege	1948	wmic.exe
Token: SeLoadDriverPrivilege	1948	wmic.exe
Token: SeSystemProfilePrivilege	1948	wmic.exe
Token: SeSystemtimePrivilege	1948	wmic.exe
Token: SeProfSingleProcessPrivilege	1948	wmic.exe
Token: SeIncBasePriorityPrivilege	1948	wmic.exe
Token: SeCreatePagefilePrivilege	1948	wmic.exe
Token: SeBackupPrivilege	1948	wmic.exe
Token: SeRestorePrivilege	1948	wmic.exe
Token: SeShutdownPrivilege	1948	wmic.exe
Token: SeDebugPrivilege	1948	wmic.exe
Token: SeSystemEnvironmentPrivilege	1948	wmic.exe
Token: SeRemoteShutdownPrivilege	1948	wmic.exe
Token: SeUndockPrivilege	1948	wmic.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1968	RuntimeBroker.exe

Suspicious use of WriteProcessMemory 44 IoCs

description	pid	Process	procid_target
PID 760 wrote to memory of 224	760	SynsWaveV1.exe	79
PID 760 wrote to memory of 224	760	SynsWaveV1.exe	79
PID 760 wrote to memory of 1968	760	SynsWaveV1.exe	80
PID 760 wrote to memory of 1968	760	SynsWaveV1.exe	80
PID 760 wrote to memory of 4936	760	SynsWaveV1.exe	81
PID 760 wrote to memory of 4936	760	SynsWaveV1.exe	81
PID 4936 wrote to memory of 3376	4936	SynsWave.exe	83
PID 4936 wrote to memory of 3376	4936	SynsWave.exe	83
PID 224 wrote to memory of 4756	224	MISHA_litvin.exe	84
PID 224 wrote to memory of 4756	224	MISHA_litvin.exe	84
PID 224 wrote to memory of 4092	224	MISHA_litvin.exe	87
PID 224 wrote to memory of 4092	224	MISHA_litvin.exe	87
PID 224 wrote to memory of 2960	224	MISHA_litvin.exe	89
PID 224 wrote to memory of 2960	224	MISHA_litvin.exe	89
PID 224 wrote to memory of 4180	224	MISHA_litvin.exe	91
PID 224 wrote to memory of 4180	224	MISHA_litvin.exe	91
PID 224 wrote to memory of 2408	224	MISHA_litvin.exe	93
PID 224 wrote to memory of 2408	224	MISHA_litvin.exe	93
PID 224 wrote to memory of 884	224	MISHA_litvin.exe	95
PID 224 wrote to memory of 884	224	MISHA_litvin.exe	95
PID 224 wrote to memory of 1948	224	MISHA_litvin.exe	97
PID 224 wrote to memory of 1948	224	MISHA_litvin.exe	97
PID 1968 wrote to memory of 2884	1968	RuntimeBroker.exe	99
PID 1968 wrote to memory of 2884	1968	RuntimeBroker.exe	99
PID 224 wrote to memory of 3124	224	MISHA_litvin.exe	100
PID 224 wrote to memory of 3124	224	MISHA_litvin.exe	100
PID 224 wrote to memory of 2432	224	MISHA_litvin.exe	103
PID 224 wrote to memory of 2432	224	MISHA_litvin.exe	103
PID 1968 wrote to memory of 1148	1968	RuntimeBroker.exe	105
PID 1968 wrote to memory of 1148	1968	RuntimeBroker.exe	105
PID 224 wrote to memory of 1552	224	MISHA_litvin.exe	106
PID 224 wrote to memory of 1552	224	MISHA_litvin.exe	106
PID 1968 wrote to memory of 1788	1968	RuntimeBroker.exe	109
PID 1968 wrote to memory of 1788	1968	RuntimeBroker.exe	109
PID 224 wrote to memory of 1800	224	MISHA_litvin.exe	111
PID 224 wrote to memory of 1800	224	MISHA_litvin.exe	111
PID 1968 wrote to memory of 4992	1968	RuntimeBroker.exe	113
PID 1968 wrote to memory of 4992	1968	RuntimeBroker.exe	113
PID 224 wrote to memory of 4908	224	MISHA_litvin.exe	115
PID 224 wrote to memory of 4908	224	MISHA_litvin.exe	115
PID 4908 wrote to memory of 4920	4908	cmd.exe	117
PID 4908 wrote to memory of 4920	4908	cmd.exe	117
PID 1968 wrote to memory of 1980	1968	RuntimeBroker.exe	118
PID 1968 wrote to memory of 1980	1968	RuntimeBroker.exe	118

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
4092	attrib.exe

C:\Users\Admin\AppData\Local\Temp\SynsWaveV1.exe
"C:\Users\Admin\AppData\Local\Temp\SynsWaveV1.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:760
- C:\Users\Admin\AppData\Roaming\MISHA_litvin.exe
  "C:\Users\Admin\AppData\Roaming\MISHA_litvin.exe"
  2⤵
  - Drops file in Drivers directory
  - Executes dropped EXE
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:224
- - C:\Windows\System32\Wbem\wmic.exe
    "wmic.exe" csproduct get uuid
    3⤵
    - Suspicious use of AdjustPrivilegeToken
    PID:4756
- - C:\Windows\SYSTEM32\attrib.exe
    "attrib.exe" +h +s "C:\Users\Admin\AppData\Roaming\MISHA_litvin.exe"
    3⤵
    - Views/modifies file attributes
    PID:4092
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Roaming\MISHA_litvin.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2960
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "powershell.exe" Set-MpPreference -DisableIntrusionPreventionSystem $true -DisableIOAVProtection $true -DisableRealtimeMonitoring $true -DisableScriptScanning $true -EnableControlledFolderAccess Disabled -EnableNetworkProtection AuditMode -Force -MAPSReporting Disabled -SubmitSamplesConsent NeverSend && powershell Set-MpPreference -SubmitSamplesConsent 2
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:4180
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "powershell.exe" Get-ItemPropertyValue -Path HKCU:SOFTWARE\Roblox\RobloxStudioBrowser\roblox.com -Name .ROBLOSECURITY
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2408
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "powershell.exe" Get-ItemPropertyValue -Path HKLN:SOFTWARE\Roblox\RobloxStudioBrowser\roblox.com -Name .ROBLOSECURITY
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:884
- - C:\Windows\System32\Wbem\wmic.exe
    "wmic.exe" os get Caption
    3⤵
    - Suspicious use of AdjustPrivilegeToken
    PID:1948
- - C:\Windows\System32\Wbem\wmic.exe
    "wmic.exe" computersystem get totalphysicalmemory
    3⤵
    PID:3124
- - C:\Windows\System32\Wbem\wmic.exe
    "wmic.exe" csproduct get uuid
    3⤵
    PID:2432
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "powershell.exe" Get-ItemPropertyValue -Path 'HKLM:System\CurrentControlSet\Control\Session Manager\Environment' -Name PROCESSOR_IDENTIFIER
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    PID:1552
- - C:\Windows\System32\Wbem\wmic.exe
    "wmic" path win32_VideoController get name
    3⤵
    - Detects videocard installed
    PID:1800
- - C:\Windows\SYSTEM32\cmd.exe
    "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Roaming\MISHA_litvin.exe" && pause
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Suspicious use of WriteProcessMemory
    PID:4908
  - - C:\Windows\system32\PING.EXE
      ping localhost
      4⤵
      System Network Configuration Discovery: Internet Connection Discovery
      Runs ping.exe
      PID:4920
- C:\Users\Admin\AppData\Roaming\RuntimeBroker.exe
  "C:\Users\Admin\AppData\Roaming\RuntimeBroker.exe"
  2⤵
  - Drops startup file
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1968
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Roaming\RuntimeBroker.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    PID:2884
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'RuntimeBroker.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    PID:1148
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\RuntimeBroker'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    PID:1788
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'RuntimeBroker'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    PID:4992
- - C:\Windows\System32\schtasks.exe
    "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "RuntimeBroker" /tr "C:\Users\Admin\RuntimeBroker"
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:1980
- C:\Users\Admin\AppData\Roaming\SynsWave.exe
  "C:\Users\Admin\AppData\Roaming\SynsWave.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of WriteProcessMemory
  PID:4936
- - C:\Windows\system32\cmd.exe
    C:\Windows\system32\cmd.exe /c cls
    3⤵
    PID:3376

C:\Users\Admin\RuntimeBroker
C:\Users\Admin\RuntimeBroker
1⤵
- Executes dropped EXE
PID:460

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k LocalService -p -s NPSMSvc
1⤵
PID:3604

C:\Users\Admin\RuntimeBroker
C:\Users\Admin\RuntimeBroker
1⤵
- Executes dropped EXE
PID:1096

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Hide Artifacts

T1564

Hidden Files and Directories

T1564.001

Modify Registry

T1112

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Query Registry

T1012

Remote System Discovery

T1018

System Information Discovery

T1082

System Network Configuration Discovery

T1016

Internet Connection Discovery

T1016.001

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Web Service

T1102

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

RuntimeBroker.log

Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\RuntimeBroker.log
Size 654B
SHA256 e31b18f21621d9983bfdf1ea3e53884a9d58b8ffd79e0e5790da6f3a81a8b9d3
MD5 2cbbb74b7da1f720b48ed31085cbd5b8
SHA1 79caa9a3ea8abe1b9c4326c3633da64a5f724964
SHA512 ecf02d5240e0c1c005d3ab393aa7eff62bd498c2db5905157e2bf6d29e1b663228a9583950842629d1a4caef404c8941a0c7799b1a3bd1eb890a09fdb7efcff9
MD5 SHA1 SHA512

Submit Download

powershell.exe.log

Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log
Size 2KB
SHA256 85b280a39fc31ba1e15fb06102a05b8405ff3b82feb181d4170f04e466dd647c
MD5 627073ee3ca9676911bee35548eff2b8
SHA1 4c4b68c65e2cab9864b51167d710aa29ebdcff2e
SHA512 3c5f6c03e253b83c57e8d6f0334187dbdcdf4fa549eecd36cbc1322dca6d3ca891dc6a019c49ec2eafb88f82d0434299c31e4dfaab123acb42e0546218f311fb
MD5 SHA1 SHA512

Submit Download