umbral | dc7f8c7c39bb043da2c19a03504c499e0af367fefee810a8190c1119992e2248

Analysis

max time kernel
147s
max time network
142s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
23-02-2025 10:42

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General

Target

obxod266dev.exe
Size

329KB
MD5

31fc82eeaed45f2389b57ffb9d8f6ea2
SHA1

fd46d4e307b09a372a3bfc0d88b87eeccaf77912
SHA256

dc7f8c7c39bb043da2c19a03504c499e0af367fefee810a8190c1119992e2248
SHA512

418bca3b27a8354e559de8e1333ebc8ff42a5d4f07b42a0ec95775c9a52feb1d61a00006ceefef3be8e30dc07c0fb3123440413a2b16d8d9cc6e468cb9d5c962
SSDEEP

6144:3aDaK7MooumCpZSApAWl2IenY7YDlw+JmS1r8+CMCX:3LK7sk2IKYkp/mYPCX

Score

10^/10

umbral xworm execution persistence rat spyware stealer trojan

Malware Config

Extracted

Family

xworm

25.ip.gl.ply.gg:59054

Attributes

Install_directory
%AppData%
install_file
svchost.exe

Extracted

Family

umbral

https://discord.com/api/webhooks/1342862584386420817/8iDLBPWkMbkgW0Lx9Tlnezr6EGJYKsdRBZ8GJHI66h0NchvKorRU-U6oiQsKR-OZeqD9

Signatures

Detect Umbral payload 2 IoCs

resource	yara_rule
behavioral2/files/0x0008000000019326-10.dat	family_umbral
behavioral2/memory/2892-13-0x00000000010E0000-0x0000000001120000-memory.dmp	family_umbral

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral2/files/0x00070000000120fc-6.dat	family_xworm
behavioral2/memory/2924-11-0x0000000000870000-0x000000000088A000-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 7 IoCs

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

execution

PowerShell

T1059.001

pid	Process
2972	powershell.exe
1644	powershell.exe
1576	powershell.exe
2708	powershell.exe
2420	powershell.exe
2100	powershell.exe
272	powershell.exe

Drops file in Drivers directory 1 IoCs

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

Drops startup file 2 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.lnk	obxod 266dev.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.lnk	obxod 266dev.exe

Executes dropped EXE 2 IoCs

pid	Process
2924	obxod 266dev.exe
2892	Umbral.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

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-1-5-21-3692679935-4019334568-335155002-1000\Software\Microsoft\Windows\CurrentVersion\Run\svchost = "C:\\Users\\Admin\\AppData\\Roaming\\svchost.exe"	obxod 266dev.exe

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

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 10 IoCs

pid	Process
1576	powershell.exe
2708	powershell.exe
2420	powershell.exe
2972	powershell.exe
2924	obxod 266dev.exe
2892	Umbral.exe
1644	powershell.exe
2100	powershell.exe
272	powershell.exe
700	powershell.exe

Suspicious use of AdjustPrivilegeToken 51 IoCs

description	pid	Process
Token: SeDebugPrivilege	2924	obxod 266dev.exe
Token: SeDebugPrivilege	2892	Umbral.exe
Token: SeDebugPrivilege	1576	powershell.exe
Token: SeIncreaseQuotaPrivilege	2296	wmic.exe
Token: SeSecurityPrivilege	2296	wmic.exe
Token: SeTakeOwnershipPrivilege	2296	wmic.exe
Token: SeLoadDriverPrivilege	2296	wmic.exe
Token: SeSystemProfilePrivilege	2296	wmic.exe
Token: SeSystemtimePrivilege	2296	wmic.exe
Token: SeProfSingleProcessPrivilege	2296	wmic.exe
Token: SeIncBasePriorityPrivilege	2296	wmic.exe
Token: SeCreatePagefilePrivilege	2296	wmic.exe
Token: SeBackupPrivilege	2296	wmic.exe
Token: SeRestorePrivilege	2296	wmic.exe
Token: SeShutdownPrivilege	2296	wmic.exe
Token: SeDebugPrivilege	2296	wmic.exe
Token: SeSystemEnvironmentPrivilege	2296	wmic.exe
Token: SeRemoteShutdownPrivilege	2296	wmic.exe
Token: SeUndockPrivilege	2296	wmic.exe
Token: SeManageVolumePrivilege	2296	wmic.exe
Token: 33	2296	wmic.exe
Token: 34	2296	wmic.exe
Token: 35	2296	wmic.exe
Token: SeDebugPrivilege	2708	powershell.exe
Token: SeIncreaseQuotaPrivilege	2296	wmic.exe
Token: SeSecurityPrivilege	2296	wmic.exe
Token: SeTakeOwnershipPrivilege	2296	wmic.exe
Token: SeLoadDriverPrivilege	2296	wmic.exe
Token: SeSystemProfilePrivilege	2296	wmic.exe
Token: SeSystemtimePrivilege	2296	wmic.exe
Token: SeProfSingleProcessPrivilege	2296	wmic.exe
Token: SeIncBasePriorityPrivilege	2296	wmic.exe
Token: SeCreatePagefilePrivilege	2296	wmic.exe
Token: SeBackupPrivilege	2296	wmic.exe
Token: SeRestorePrivilege	2296	wmic.exe
Token: SeShutdownPrivilege	2296	wmic.exe
Token: SeDebugPrivilege	2296	wmic.exe
Token: SeSystemEnvironmentPrivilege	2296	wmic.exe
Token: SeRemoteShutdownPrivilege	2296	wmic.exe
Token: SeUndockPrivilege	2296	wmic.exe
Token: SeManageVolumePrivilege	2296	wmic.exe
Token: 33	2296	wmic.exe
Token: 34	2296	wmic.exe
Token: 35	2296	wmic.exe
Token: SeDebugPrivilege	2420	powershell.exe
Token: SeDebugPrivilege	2972	powershell.exe
Token: SeDebugPrivilege	2924	obxod 266dev.exe
Token: SeDebugPrivilege	1644	powershell.exe
Token: SeDebugPrivilege	2100	powershell.exe
Token: SeDebugPrivilege	272	powershell.exe
Token: SeDebugPrivilege	700	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2924	obxod 266dev.exe

Suspicious use of WriteProcessMemory 39 IoCs

description	pid	Process	procid_target
PID 796 wrote to memory of 2924	796	obxod266dev.exe	29
PID 796 wrote to memory of 2924	796	obxod266dev.exe	29
PID 796 wrote to memory of 2924	796	obxod266dev.exe	29
PID 796 wrote to memory of 2892	796	obxod266dev.exe	30
PID 796 wrote to memory of 2892	796	obxod266dev.exe	30
PID 796 wrote to memory of 2892	796	obxod266dev.exe	30
PID 2924 wrote to memory of 1576	2924	obxod 266dev.exe	31
PID 2924 wrote to memory of 1576	2924	obxod 266dev.exe	31
PID 2924 wrote to memory of 1576	2924	obxod 266dev.exe	31
PID 2924 wrote to memory of 2708	2924	obxod 266dev.exe	33
PID 2924 wrote to memory of 2708	2924	obxod 266dev.exe	33
PID 2924 wrote to memory of 2708	2924	obxod 266dev.exe	33
PID 2892 wrote to memory of 2296	2892	Umbral.exe	35
PID 2892 wrote to memory of 2296	2892	Umbral.exe	35
PID 2892 wrote to memory of 2296	2892	Umbral.exe	35
PID 2924 wrote to memory of 2420	2924	obxod 266dev.exe	38
PID 2924 wrote to memory of 2420	2924	obxod 266dev.exe	38
PID 2924 wrote to memory of 2420	2924	obxod 266dev.exe	38
PID 2924 wrote to memory of 2972	2924	obxod 266dev.exe	40
PID 2924 wrote to memory of 2972	2924	obxod 266dev.exe	40
PID 2924 wrote to memory of 2972	2924	obxod 266dev.exe	40
PID 2892 wrote to memory of 2084	2892	Umbral.exe	42
PID 2892 wrote to memory of 2084	2892	Umbral.exe	42
PID 2892 wrote to memory of 2084	2892	Umbral.exe	42
PID 2892 wrote to memory of 1644	2892	Umbral.exe	44
PID 2892 wrote to memory of 1644	2892	Umbral.exe	44
PID 2892 wrote to memory of 1644	2892	Umbral.exe	44
PID 2892 wrote to memory of 2100	2892	Umbral.exe	46
PID 2892 wrote to memory of 2100	2892	Umbral.exe	46
PID 2892 wrote to memory of 2100	2892	Umbral.exe	46
PID 2892 wrote to memory of 272	2892	Umbral.exe	48
PID 2892 wrote to memory of 272	2892	Umbral.exe	48
PID 2892 wrote to memory of 272	2892	Umbral.exe	48
PID 2892 wrote to memory of 700	2892	Umbral.exe	50
PID 2892 wrote to memory of 700	2892	Umbral.exe	50
PID 2892 wrote to memory of 700	2892	Umbral.exe	50
PID 2892 wrote to memory of 1724	2892	Umbral.exe	52
PID 2892 wrote to memory of 1724	2892	Umbral.exe	52
PID 2892 wrote to memory of 1724	2892	Umbral.exe	52

Views/modifies file attributes 1 TTPs 1 IoCs

defense_evasion

Hidden Files and Directories

T1564.001

pid	Process
2084	attrib.exe

C:\Users\Admin\AppData\Local\Temp\obxod266dev.exe
"C:\Users\Admin\AppData\Local\Temp\obxod266dev.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:796
- C:\Users\Admin\AppData\Roaming\obxod 266dev.exe
  "C:\Users\Admin\AppData\Roaming\obxod 266dev.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:2924
- - 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\obxod 266dev.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1576
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'obxod 266dev.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2708
- - 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\svchost.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2420
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'svchost.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2972
- C:\Users\Admin\AppData\Roaming\Umbral.exe
  "C:\Users\Admin\AppData\Roaming\Umbral.exe"
  2⤵
  - Drops file in Drivers directory
  - Executes dropped EXE
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2892
- - C:\Windows\System32\Wbem\wmic.exe
    "wmic.exe" csproduct get uuid
    3⤵
    - Suspicious use of AdjustPrivilegeToken
    PID:2296
- - C:\Windows\system32\attrib.exe
    "attrib.exe" +h +s "C:\Users\Admin\AppData\Roaming\Umbral.exe"
    3⤵
    - Views/modifies file attributes
    PID:2084
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Roaming\Umbral.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1644
- - 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:2100
- - 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:272
- - 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:700
- - C:\Windows\system32\WerFault.exe
    C:\Windows\system32\WerFault.exe -u -p 2892 -s 1964
    3⤵
    PID:1724

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

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

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
7KB

MD5
4543c4900098b2ced06d579eda67048f

SHA1
97fc0100493c51538c82288d61fc8e2c27e304d9

SHA256
8a8b3af15c7dbb7f72c019fb44c5840c4accc25d447e1c4505a8ef3717c1daf0

SHA512
1000c8fc8677a307f7fd2619e269fe9b8300bd1e8c12f82e8d0a0ccef43fa42ddc6704c6831adb2876f115af8e7e35d3ea0f5120f20fe79cfd68407875253af6

Download Submit
C:\Users\Admin\AppData\Roaming\Umbral.exe

Filesize
232KB

MD5
e486d8aafa368a43a56987dd4d80aa75

SHA1
8851fe89928a47a58b50348d9a4458f24e2725f9

SHA256
596ac7d2aa525ceb7b82aec1e6376d34f36649f028de442fb0a0021e380db136

SHA512
abe413e1277c0ac103778822dcd3f6b03f315fad83731af10284a68fca8ecfa2d2c6b9d9c3e0ec55803a2b31d03ae9c863c430eba23954ccc5f82b2a6d21e573

Download Submit
C:\Users\Admin\AppData\Roaming\obxod 266dev.exe

Filesize
80KB

MD5
3598f860aacfe53b00c305715a6c7b2f

SHA1
70640b2e8a71017cdf5fb8e91fe0b065f89a064b

SHA256
b4b8385381c3bb23d821f179a73ff19083d15f7cc6e1c9cc2235da3c382db241

SHA512
0b2bfa9e701ba126acb6bf9b9b5df26e8558a59708659ec2981173267d277f44e6b6575f1ceb945a86705796ea8f50c5cd1617ee45fdaabdc68af9b2022e654c

Download Submit
memory/796-1-0x0000000000E30000-0x0000000000E88000-memory.dmp

Filesize
352KB

Download
memory/796-0-0x000007FEF5DE3000-0x000007FEF5DE4000-memory.dmp

Filesize
4KB

Download
memory/1576-20-0x0000000002460000-0x0000000002468000-memory.dmp

Filesize
32KB

Download
memory/1576-19-0x000000001B1F0000-0x000000001B4D2000-memory.dmp

Filesize
2.9MB

Download
memory/2420-33-0x0000000002140000-0x0000000002148000-memory.dmp

Filesize
32KB

Download
memory/2708-26-0x000000001B1F0000-0x000000001B4D2000-memory.dmp

Filesize
2.9MB

Download
memory/2708-27-0x00000000025A0000-0x00000000025A8000-memory.dmp

Filesize
32KB

Download
memory/2892-13-0x00000000010E0000-0x0000000001120000-memory.dmp

Filesize
256KB

Download
memory/2924-14-0x000007FEF5DE0000-0x000007FEF67CC000-memory.dmp

Filesize
9.9MB

Download
memory/2924-44-0x000007FEF5DE0000-0x000007FEF67CC000-memory.dmp

Filesize
9.9MB

Download
memory/2924-11-0x0000000000870000-0x000000000088A000-memory.dmp

Filesize
104KB

Download
memory/2972-39-0x0000000001FC0000-0x0000000001FC8000-memory.dmp

Filesize
32KB

Download