umbral | dc7f8c7c39bb043da2c19a03504c499e0af367fefee810a8190c1119992e2248

Analysis

max time kernel
146s
max time network
141s
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

umbral

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

Extracted

Family

xworm

25.ip.gl.ply.gg:59054

Attributes

Install_directory
%AppData%
install_file
svchost.exe

Signatures

Detect Umbral payload 2 IoCs

resource	yara_rule
behavioral1/memory/588-13-0x00000000001D0000-0x0000000000210000-memory.dmp	family_umbral
behavioral1/files/0x0008000000016c23-12.dat	family_umbral

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral1/memory/1636-9-0x0000000000DF0000-0x0000000000E0A000-memory.dmp	family_xworm
behavioral1/files/0x000a000000012262-6.dat	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

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
2196	powershell.exe
1320	powershell.exe
1416	powershell.exe
2820	powershell.exe
2736	powershell.exe
2708	powershell.exe
1676	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 created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.lnk	obxod 266dev.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.lnk	obxod 266dev.exe

Executes dropped EXE 2 IoCs

pid	Process
1636	obxod 266dev.exe
588	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
2736	powershell.exe
2708	powershell.exe
1676	powershell.exe
1416	powershell.exe
1636	obxod 266dev.exe
588	Umbral.exe
2820	powershell.exe
2196	powershell.exe
1320	powershell.exe
1732	powershell.exe

Suspicious use of AdjustPrivilegeToken 51 IoCs

description	pid	Process
Token: SeDebugPrivilege	1636	obxod 266dev.exe
Token: SeDebugPrivilege	588	Umbral.exe
Token: SeDebugPrivilege	2736	powershell.exe
Token: SeIncreaseQuotaPrivilege	2720	wmic.exe
Token: SeSecurityPrivilege	2720	wmic.exe
Token: SeTakeOwnershipPrivilege	2720	wmic.exe
Token: SeLoadDriverPrivilege	2720	wmic.exe
Token: SeSystemProfilePrivilege	2720	wmic.exe
Token: SeSystemtimePrivilege	2720	wmic.exe
Token: SeProfSingleProcessPrivilege	2720	wmic.exe
Token: SeIncBasePriorityPrivilege	2720	wmic.exe
Token: SeCreatePagefilePrivilege	2720	wmic.exe
Token: SeBackupPrivilege	2720	wmic.exe
Token: SeRestorePrivilege	2720	wmic.exe
Token: SeShutdownPrivilege	2720	wmic.exe
Token: SeDebugPrivilege	2720	wmic.exe
Token: SeSystemEnvironmentPrivilege	2720	wmic.exe
Token: SeRemoteShutdownPrivilege	2720	wmic.exe
Token: SeUndockPrivilege	2720	wmic.exe
Token: SeManageVolumePrivilege	2720	wmic.exe
Token: 33	2720	wmic.exe
Token: 34	2720	wmic.exe
Token: 35	2720	wmic.exe
Token: SeIncreaseQuotaPrivilege	2720	wmic.exe
Token: SeSecurityPrivilege	2720	wmic.exe
Token: SeTakeOwnershipPrivilege	2720	wmic.exe
Token: SeLoadDriverPrivilege	2720	wmic.exe
Token: SeSystemProfilePrivilege	2720	wmic.exe
Token: SeSystemtimePrivilege	2720	wmic.exe
Token: SeProfSingleProcessPrivilege	2720	wmic.exe
Token: SeIncBasePriorityPrivilege	2720	wmic.exe
Token: SeCreatePagefilePrivilege	2720	wmic.exe
Token: SeBackupPrivilege	2720	wmic.exe
Token: SeRestorePrivilege	2720	wmic.exe
Token: SeShutdownPrivilege	2720	wmic.exe
Token: SeDebugPrivilege	2720	wmic.exe
Token: SeSystemEnvironmentPrivilege	2720	wmic.exe
Token: SeRemoteShutdownPrivilege	2720	wmic.exe
Token: SeUndockPrivilege	2720	wmic.exe
Token: SeManageVolumePrivilege	2720	wmic.exe
Token: 33	2720	wmic.exe
Token: 34	2720	wmic.exe
Token: 35	2720	wmic.exe
Token: SeDebugPrivilege	2708	powershell.exe
Token: SeDebugPrivilege	1676	powershell.exe
Token: SeDebugPrivilege	1416	powershell.exe
Token: SeDebugPrivilege	1636	obxod 266dev.exe
Token: SeDebugPrivilege	2820	powershell.exe
Token: SeDebugPrivilege	2196	powershell.exe
Token: SeDebugPrivilege	1320	powershell.exe
Token: SeDebugPrivilege	1732	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1636	obxod 266dev.exe

Suspicious use of WriteProcessMemory 39 IoCs

description	pid	Process	procid_target
PID 2352 wrote to memory of 1636	2352	obxod266dev.exe	31
PID 2352 wrote to memory of 1636	2352	obxod266dev.exe	31
PID 2352 wrote to memory of 1636	2352	obxod266dev.exe	31
PID 2352 wrote to memory of 588	2352	obxod266dev.exe	32
PID 2352 wrote to memory of 588	2352	obxod266dev.exe	32
PID 2352 wrote to memory of 588	2352	obxod266dev.exe	32
PID 1636 wrote to memory of 2736	1636	obxod 266dev.exe	33
PID 1636 wrote to memory of 2736	1636	obxod 266dev.exe	33
PID 1636 wrote to memory of 2736	1636	obxod 266dev.exe	33
PID 588 wrote to memory of 2720	588	Umbral.exe	35
PID 588 wrote to memory of 2720	588	Umbral.exe	35
PID 588 wrote to memory of 2720	588	Umbral.exe	35
PID 1636 wrote to memory of 2708	1636	obxod 266dev.exe	38
PID 1636 wrote to memory of 2708	1636	obxod 266dev.exe	38
PID 1636 wrote to memory of 2708	1636	obxod 266dev.exe	38
PID 1636 wrote to memory of 1676	1636	obxod 266dev.exe	40
PID 1636 wrote to memory of 1676	1636	obxod 266dev.exe	40
PID 1636 wrote to memory of 1676	1636	obxod 266dev.exe	40
PID 1636 wrote to memory of 1416	1636	obxod 266dev.exe	42
PID 1636 wrote to memory of 1416	1636	obxod 266dev.exe	42
PID 1636 wrote to memory of 1416	1636	obxod 266dev.exe	42
PID 588 wrote to memory of 3020	588	Umbral.exe	44
PID 588 wrote to memory of 3020	588	Umbral.exe	44
PID 588 wrote to memory of 3020	588	Umbral.exe	44
PID 588 wrote to memory of 2820	588	Umbral.exe	46
PID 588 wrote to memory of 2820	588	Umbral.exe	46
PID 588 wrote to memory of 2820	588	Umbral.exe	46
PID 588 wrote to memory of 2196	588	Umbral.exe	48
PID 588 wrote to memory of 2196	588	Umbral.exe	48
PID 588 wrote to memory of 2196	588	Umbral.exe	48
PID 588 wrote to memory of 1320	588	Umbral.exe	50
PID 588 wrote to memory of 1320	588	Umbral.exe	50
PID 588 wrote to memory of 1320	588	Umbral.exe	50
PID 588 wrote to memory of 1732	588	Umbral.exe	52
PID 588 wrote to memory of 1732	588	Umbral.exe	52
PID 588 wrote to memory of 1732	588	Umbral.exe	52
PID 588 wrote to memory of 1712	588	Umbral.exe	54
PID 588 wrote to memory of 1712	588	Umbral.exe	54
PID 588 wrote to memory of 1712	588	Umbral.exe	54

Views/modifies file attributes 1 TTPs 1 IoCs

defense_evasion

Hidden Files and Directories

T1564.001

pid	Process
3020	attrib.exe

C:\Users\Admin\AppData\Local\Temp\obxod266dev.exe
"C:\Users\Admin\AppData\Local\Temp\obxod266dev.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2352
- 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:1636
- - 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:2736
- - 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:1676
- - 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:1416
- 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:588
- - C:\Windows\System32\Wbem\wmic.exe
    "wmic.exe" csproduct get uuid
    3⤵
    - Suspicious use of AdjustPrivilegeToken
    PID:2720
- - C:\Windows\system32\attrib.exe
    "attrib.exe" +h +s "C:\Users\Admin\AppData\Roaming\Umbral.exe"
    3⤵
    - Views/modifies file attributes
    PID:3020
- - 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:2820
- - 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:2196
- - 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:1320
- - 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:1732
- - C:\Windows\system32\WerFault.exe
    C:\Windows\system32\WerFault.exe -u -p 588 -s 1960
    3⤵
    PID:1712

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
20f71c52be3c4739a7e7373923e6a96d

SHA1
92ae6107395e1a7371485e58193eaf014daa3be8

SHA256
061b4d4283259a80654203984bdbe06411cabc22b44262fa74918b4c99022426

SHA512
ecfc8605f0387b1998a72dd6155df574c01d0ff976dceea1fbe33831bfd7ab24493607a0b8554700035ad288469b62fb345227eecd13c78a0f2c704185bc5b5d

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

Filesize
7KB

MD5
a3a22f8d8b0421a3cc798f923b370b52

SHA1
b38291be0ef02566c904a6d76f6fe0dc0c3cf1d7

SHA256
5ffec7ef03e0cc287badde26b103c8043dbbd5558d5d64fbeeb1b52fd76d5eb5

SHA512
60ccca795813b8fe086d9eaaa0e826a9acd97fccb6e995341c308932450b3ee391bfe79da58a50ef4172915fe0a3363f5078a56242f5dda7d1d00615b5268f08

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/588-13-0x00000000001D0000-0x0000000000210000-memory.dmp

Filesize
256KB

Download
memory/1636-9-0x0000000000DF0000-0x0000000000E0A000-memory.dmp

Filesize
104KB

Download
memory/1636-43-0x000007FEF60D0000-0x000007FEF6ABC000-memory.dmp

Filesize
9.9MB

Download
memory/1636-14-0x000007FEF60D0000-0x000007FEF6ABC000-memory.dmp

Filesize
9.9MB

Download
memory/2352-0-0x000007FEF60D3000-0x000007FEF60D4000-memory.dmp

Filesize
4KB

Download
memory/2352-1-0x0000000001120000-0x0000000001178000-memory.dmp

Filesize
352KB

Download
memory/2708-26-0x000000001B300000-0x000000001B5E2000-memory.dmp

Filesize
2.9MB

Download
memory/2708-27-0x0000000002270000-0x0000000002278000-memory.dmp

Filesize
32KB

Download
memory/2736-19-0x000000001B3C0000-0x000000001B6A2000-memory.dmp

Filesize
2.9MB

Download
memory/2736-20-0x0000000001E60000-0x0000000001E68000-memory.dmp

Filesize
32KB

Download