umbral | c6e3deb37384306e5bc08d51469e978c001ee54cf0ad8baa59942eda2c849b6b

Analysis

max time kernel
94s
max time network
95s
platform
windows10-2004_x64
resource
win10v2004-20250129-en
resource tags

arch:x64arch:x86image:win10v2004-20250129-enlocale:en-usos:windows10-2004-x64system
submitted
02/02/2025, 19:41

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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
behavioral2/memory/232-1-0x0000014A86A20000-0x0000014A86A60000-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
5076	powershell.exe
2312	powershell.exe
2976	powershell.exe
1996	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	sws.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
22	discord.com
21	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
4	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
4864	cmd.exe
3752	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
3020	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
3752	PING.EXE

Suspicious behavior: EnumeratesProcesses 11 IoCs

pid	Process
232	sws.exe
5076	powershell.exe
5076	powershell.exe
2312	powershell.exe
2312	powershell.exe
2976	powershell.exe
2976	powershell.exe
4456	powershell.exe
4456	powershell.exe
1996	powershell.exe
1996	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	232	sws.exe
Token: SeIncreaseQuotaPrivilege	876	wmic.exe
Token: SeSecurityPrivilege	876	wmic.exe
Token: SeTakeOwnershipPrivilege	876	wmic.exe
Token: SeLoadDriverPrivilege	876	wmic.exe
Token: SeSystemProfilePrivilege	876	wmic.exe
Token: SeSystemtimePrivilege	876	wmic.exe
Token: SeProfSingleProcessPrivilege	876	wmic.exe
Token: SeIncBasePriorityPrivilege	876	wmic.exe
Token: SeCreatePagefilePrivilege	876	wmic.exe
Token: SeBackupPrivilege	876	wmic.exe
Token: SeRestorePrivilege	876	wmic.exe
Token: SeShutdownPrivilege	876	wmic.exe
Token: SeDebugPrivilege	876	wmic.exe
Token: SeSystemEnvironmentPrivilege	876	wmic.exe
Token: SeRemoteShutdownPrivilege	876	wmic.exe
Token: SeUndockPrivilege	876	wmic.exe
Token: SeManageVolumePrivilege	876	wmic.exe
Token: 33	876	wmic.exe
Token: 34	876	wmic.exe
Token: 35	876	wmic.exe
Token: 36	876	wmic.exe
Token: SeIncreaseQuotaPrivilege	876	wmic.exe
Token: SeSecurityPrivilege	876	wmic.exe
Token: SeTakeOwnershipPrivilege	876	wmic.exe
Token: SeLoadDriverPrivilege	876	wmic.exe
Token: SeSystemProfilePrivilege	876	wmic.exe
Token: SeSystemtimePrivilege	876	wmic.exe
Token: SeProfSingleProcessPrivilege	876	wmic.exe
Token: SeIncBasePriorityPrivilege	876	wmic.exe
Token: SeCreatePagefilePrivilege	876	wmic.exe
Token: SeBackupPrivilege	876	wmic.exe
Token: SeRestorePrivilege	876	wmic.exe
Token: SeShutdownPrivilege	876	wmic.exe
Token: SeDebugPrivilege	876	wmic.exe
Token: SeSystemEnvironmentPrivilege	876	wmic.exe
Token: SeRemoteShutdownPrivilege	876	wmic.exe
Token: SeUndockPrivilege	876	wmic.exe
Token: SeManageVolumePrivilege	876	wmic.exe
Token: 33	876	wmic.exe
Token: 34	876	wmic.exe
Token: 35	876	wmic.exe
Token: 36	876	wmic.exe
Token: SeDebugPrivilege	5076	powershell.exe
Token: SeDebugPrivilege	2312	powershell.exe
Token: SeDebugPrivilege	2976	powershell.exe
Token: SeDebugPrivilege	4456	powershell.exe
Token: SeIncreaseQuotaPrivilege	4988	wmic.exe
Token: SeSecurityPrivilege	4988	wmic.exe
Token: SeTakeOwnershipPrivilege	4988	wmic.exe
Token: SeLoadDriverPrivilege	4988	wmic.exe
Token: SeSystemProfilePrivilege	4988	wmic.exe
Token: SeSystemtimePrivilege	4988	wmic.exe
Token: SeProfSingleProcessPrivilege	4988	wmic.exe
Token: SeIncBasePriorityPrivilege	4988	wmic.exe
Token: SeCreatePagefilePrivilege	4988	wmic.exe
Token: SeBackupPrivilege	4988	wmic.exe
Token: SeRestorePrivilege	4988	wmic.exe
Token: SeShutdownPrivilege	4988	wmic.exe
Token: SeDebugPrivilege	4988	wmic.exe
Token: SeSystemEnvironmentPrivilege	4988	wmic.exe
Token: SeRemoteShutdownPrivilege	4988	wmic.exe
Token: SeUndockPrivilege	4988	wmic.exe
Token: SeManageVolumePrivilege	4988	wmic.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 232 wrote to memory of 876	232	sws.exe	85
PID 232 wrote to memory of 876	232	sws.exe	85
PID 232 wrote to memory of 1700	232	sws.exe	89
PID 232 wrote to memory of 1700	232	sws.exe	89
PID 232 wrote to memory of 5076	232	sws.exe	91
PID 232 wrote to memory of 5076	232	sws.exe	91
PID 232 wrote to memory of 2312	232	sws.exe	93
PID 232 wrote to memory of 2312	232	sws.exe	93
PID 232 wrote to memory of 2976	232	sws.exe	95
PID 232 wrote to memory of 2976	232	sws.exe	95
PID 232 wrote to memory of 4456	232	sws.exe	97
PID 232 wrote to memory of 4456	232	sws.exe	97
PID 232 wrote to memory of 4988	232	sws.exe	99
PID 232 wrote to memory of 4988	232	sws.exe	99
PID 232 wrote to memory of 1468	232	sws.exe	101
PID 232 wrote to memory of 1468	232	sws.exe	101
PID 232 wrote to memory of 1424	232	sws.exe	103
PID 232 wrote to memory of 1424	232	sws.exe	103
PID 232 wrote to memory of 1996	232	sws.exe	105
PID 232 wrote to memory of 1996	232	sws.exe	105
PID 232 wrote to memory of 3020	232	sws.exe	107
PID 232 wrote to memory of 3020	232	sws.exe	107
PID 232 wrote to memory of 4864	232	sws.exe	109
PID 232 wrote to memory of 4864	232	sws.exe	109
PID 4864 wrote to memory of 3752	4864	cmd.exe	111
PID 4864 wrote to memory of 3752	4864	cmd.exe	111

Views/modifies file attributes 1 TTPs 1 IoCs

defense_evasion

Hidden Files and Directories

T1564.001

pid	Process
1700	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:232
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:876
- C:\Windows\SYSTEM32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\sws.exe"
  2⤵
  - Views/modifies file attributes
  PID:1700
- 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:5076
- 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:2312
- 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:2976
- 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:4456
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:4988
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:1468
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:1424
- 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:1996
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:3020
- C:\Windows\SYSTEM32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\sws.exe" && pause
  2⤵
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:4864
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:3752

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\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log

Filesize
2KB

MD5
d85ba6ff808d9e5444a4b369f5bc2730

SHA1
31aa9d96590fff6981b315e0b391b575e4c0804a

SHA256
84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f

SHA512
8c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
944B

MD5
77d622bb1a5b250869a3238b9bc1402b

SHA1
d47f4003c2554b9dfc4c16f22460b331886b191b

SHA256
f97ff12a8abf4bf88bb6497bd2ac2da12628c8847a8ba5a9026bdbb76507cdfb

SHA512
d6789b5499f23c9035375a102271e17a8a82e57d6f5312fa24242e08a83efdeb8becb7622f55c4cf1b89c7d864b445df11f4d994cf7e2f87a900535bcca12fd9

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
948B

MD5
966914e2e771de7a4a57a95b6ecfa8a9

SHA1
7a32282fd51dd032967ed4d9a40cc57e265aeff2

SHA256
98d3c70d7004fa807897317bd6cd3e977b9b6c72d4d2565aca0f9f8b1c315cba

SHA512
dc39c7124a9c7c8d4c7e8e16290c46360b8d9a8f4e43edaacbbeb09bdcf20159a53db54d2b322372001b6a3de52b2f88e9088b5fdbc7638816ae0d122bb015f5

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
1KB

MD5
d3235ed022a42ec4338123ab87144afa

SHA1
5058608bc0deb720a585a2304a8f7cf63a50a315

SHA256
10663f5a1cb0afe5578f61ebaae2aafb363544e47b48521f9c23be9e6e431b27

SHA512
236761b7c68feca8bd62cba90cff0b25fac5613837aaa5d29ae823ace8b06a2057553cf7e72b11ccc59b6c289e471ca1bbac1a880aef5e2868875371a17c1abf

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
1KB

MD5
bb059cd5ec81445db881376f4c2d7eeb

SHA1
d36313ed7b12132106252009b2658a1c70fb1e87

SHA256
987d374beac33bedb33df17b602f2fdf5cdf81fa14f11dbbe606506efb8a74ad

SHA512
ce6f532e13d8353b3ad64be2d55df9600bb700dd8a4e1f8f16b1d52c416f97c7a71927a2165d74771ce7bb81dcdc33a7cf39d7f6b4dee5b9b36af22668262409

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_kqbyvse1.xs3.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/232-71-0x0000014AA1120000-0x0000014AA112A000-memory.dmp

Filesize
40KB

Download
memory/232-35-0x0000014AA10A0000-0x0000014AA10BE000-memory.dmp

Filesize
120KB

Download
memory/232-91-0x00007FFA15F60000-0x00007FFA16A21000-memory.dmp

Filesize
10.8MB

Download
memory/232-90-0x0000014AA0F70000-0x0000014AA1072000-memory.dmp

Filesize
1.0MB

Download
memory/232-2-0x00007FFA15F60000-0x00007FFA16A21000-memory.dmp

Filesize
10.8MB

Download
memory/232-33-0x0000014AA1280000-0x0000014AA12F6000-memory.dmp

Filesize
472KB

Download
memory/232-34-0x0000014AA10D0000-0x0000014AA1120000-memory.dmp

Filesize
320KB

Download
memory/232-72-0x0000014AA1320000-0x0000014AA1332000-memory.dmp

Filesize
72KB

Download
memory/232-1-0x0000014A86A20000-0x0000014A86A60000-memory.dmp

Filesize
256KB

Download
memory/232-0-0x00007FFA15F63000-0x00007FFA15F65000-memory.dmp

Filesize
8KB

Download
memory/5076-9-0x0000022041A70000-0x0000022041A92000-memory.dmp

Filesize
136KB

Download
memory/5076-15-0x00007FFA15F60000-0x00007FFA16A21000-memory.dmp

Filesize
10.8MB

Download
memory/5076-14-0x00007FFA15F60000-0x00007FFA16A21000-memory.dmp

Filesize
10.8MB

Download
memory/5076-3-0x00007FFA15F60000-0x00007FFA16A21000-memory.dmp

Filesize
10.8MB

Download
memory/5076-18-0x00007FFA15F60000-0x00007FFA16A21000-memory.dmp

Filesize
10.8MB

Download