umbral | de0b828a0c5a7de9ee5cb878bf53c26294106ba05d1cc1d09e34463c6bb37e45

Analysis

max time kernel
103s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20250207-en
resource tags

arch:x64arch:x86image:win10v2004-20250207-enlocale:en-usos:windows10-2004-x64system
submitted
10-02-2025 17:13

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General

Target

PhotonExternal.exe
Size

448KB
MD5

114977c4b8e58661eca598e3e864ccea
SHA1

f4cd68a7a9f39252b3d9337f6d4bb1f2b2ba66fb
SHA256

de0b828a0c5a7de9ee5cb878bf53c26294106ba05d1cc1d09e34463c6bb37e45
SHA512

7e5730e53a6c3b9f444659f81ab582216f54ee36b2d6be59893cd93711ad2dbe125d00ca4107238324321e661a3783cf2b6de6c4f9469fad7677e7a2965bf988
SSDEEP

12288:7oZtL+EP8q6BoHdmOhWU9va6vAZQtPgkFDIknaHeELrvajxzp:FI8hBoHdmOhWU9va6vACNF5niecmxz

Score

10^/10

umbral discovery execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral2/memory/1128-1-0x00000163282E0000-0x0000016328356000-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

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
4252	powershell.exe
3868	powershell.exe
3412	powershell.exe
5104	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	PhotonExternal.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 3 IoCs

Web Service

T1102

flow	ioc
43	discord.com
44	discord.com
46	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
40	ip-api.com
37	ip-api.com

System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	MicrosoftEdgeUpdate.exe

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 1 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
1112	MicrosoftEdgeUpdate.exe

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
1732	wmic.exe

Suspicious behavior: EnumeratesProcesses 11 IoCs

pid	Process
1128	PhotonExternal.exe
5104	powershell.exe
5104	powershell.exe
3868	powershell.exe
3868	powershell.exe
4252	powershell.exe
4252	powershell.exe
1488	powershell.exe
1488	powershell.exe
3412	powershell.exe
3412	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	1128	PhotonExternal.exe
Token: SeIncreaseQuotaPrivilege	1144	wmic.exe
Token: SeSecurityPrivilege	1144	wmic.exe
Token: SeTakeOwnershipPrivilege	1144	wmic.exe
Token: SeLoadDriverPrivilege	1144	wmic.exe
Token: SeSystemProfilePrivilege	1144	wmic.exe
Token: SeSystemtimePrivilege	1144	wmic.exe
Token: SeProfSingleProcessPrivilege	1144	wmic.exe
Token: SeIncBasePriorityPrivilege	1144	wmic.exe
Token: SeCreatePagefilePrivilege	1144	wmic.exe
Token: SeBackupPrivilege	1144	wmic.exe
Token: SeRestorePrivilege	1144	wmic.exe
Token: SeShutdownPrivilege	1144	wmic.exe
Token: SeDebugPrivilege	1144	wmic.exe
Token: SeSystemEnvironmentPrivilege	1144	wmic.exe
Token: SeRemoteShutdownPrivilege	1144	wmic.exe
Token: SeUndockPrivilege	1144	wmic.exe
Token: SeManageVolumePrivilege	1144	wmic.exe
Token: 33	1144	wmic.exe
Token: 34	1144	wmic.exe
Token: 35	1144	wmic.exe
Token: 36	1144	wmic.exe
Token: SeIncreaseQuotaPrivilege	1144	wmic.exe
Token: SeSecurityPrivilege	1144	wmic.exe
Token: SeTakeOwnershipPrivilege	1144	wmic.exe
Token: SeLoadDriverPrivilege	1144	wmic.exe
Token: SeSystemProfilePrivilege	1144	wmic.exe
Token: SeSystemtimePrivilege	1144	wmic.exe
Token: SeProfSingleProcessPrivilege	1144	wmic.exe
Token: SeIncBasePriorityPrivilege	1144	wmic.exe
Token: SeCreatePagefilePrivilege	1144	wmic.exe
Token: SeBackupPrivilege	1144	wmic.exe
Token: SeRestorePrivilege	1144	wmic.exe
Token: SeShutdownPrivilege	1144	wmic.exe
Token: SeDebugPrivilege	1144	wmic.exe
Token: SeSystemEnvironmentPrivilege	1144	wmic.exe
Token: SeRemoteShutdownPrivilege	1144	wmic.exe
Token: SeUndockPrivilege	1144	wmic.exe
Token: SeManageVolumePrivilege	1144	wmic.exe
Token: 33	1144	wmic.exe
Token: 34	1144	wmic.exe
Token: 35	1144	wmic.exe
Token: 36	1144	wmic.exe
Token: SeDebugPrivilege	5104	powershell.exe
Token: SeDebugPrivilege	3868	powershell.exe
Token: SeDebugPrivilege	4252	powershell.exe
Token: SeDebugPrivilege	1488	powershell.exe
Token: SeIncreaseQuotaPrivilege	3420	wmic.exe
Token: SeSecurityPrivilege	3420	wmic.exe
Token: SeTakeOwnershipPrivilege	3420	wmic.exe
Token: SeLoadDriverPrivilege	3420	wmic.exe
Token: SeSystemProfilePrivilege	3420	wmic.exe
Token: SeSystemtimePrivilege	3420	wmic.exe
Token: SeProfSingleProcessPrivilege	3420	wmic.exe
Token: SeIncBasePriorityPrivilege	3420	wmic.exe
Token: SeCreatePagefilePrivilege	3420	wmic.exe
Token: SeBackupPrivilege	3420	wmic.exe
Token: SeRestorePrivilege	3420	wmic.exe
Token: SeShutdownPrivilege	3420	wmic.exe
Token: SeDebugPrivilege	3420	wmic.exe
Token: SeSystemEnvironmentPrivilege	3420	wmic.exe
Token: SeRemoteShutdownPrivilege	3420	wmic.exe
Token: SeUndockPrivilege	3420	wmic.exe
Token: SeManageVolumePrivilege	3420	wmic.exe

Suspicious use of WriteProcessMemory 22 IoCs

description	pid	Process	procid_target
PID 1128 wrote to memory of 1144	1128	PhotonExternal.exe	94
PID 1128 wrote to memory of 1144	1128	PhotonExternal.exe	94
PID 1128 wrote to memory of 4752	1128	PhotonExternal.exe	96
PID 1128 wrote to memory of 4752	1128	PhotonExternal.exe	96
PID 1128 wrote to memory of 5104	1128	PhotonExternal.exe	98
PID 1128 wrote to memory of 5104	1128	PhotonExternal.exe	98
PID 1128 wrote to memory of 3868	1128	PhotonExternal.exe	100
PID 1128 wrote to memory of 3868	1128	PhotonExternal.exe	100
PID 1128 wrote to memory of 4252	1128	PhotonExternal.exe	102
PID 1128 wrote to memory of 4252	1128	PhotonExternal.exe	102
PID 1128 wrote to memory of 1488	1128	PhotonExternal.exe	104
PID 1128 wrote to memory of 1488	1128	PhotonExternal.exe	104
PID 1128 wrote to memory of 3420	1128	PhotonExternal.exe	106
PID 1128 wrote to memory of 3420	1128	PhotonExternal.exe	106
PID 1128 wrote to memory of 1740	1128	PhotonExternal.exe	108
PID 1128 wrote to memory of 1740	1128	PhotonExternal.exe	108
PID 1128 wrote to memory of 2000	1128	PhotonExternal.exe	110
PID 1128 wrote to memory of 2000	1128	PhotonExternal.exe	110
PID 1128 wrote to memory of 3412	1128	PhotonExternal.exe	112
PID 1128 wrote to memory of 3412	1128	PhotonExternal.exe	112
PID 1128 wrote to memory of 1732	1128	PhotonExternal.exe	114
PID 1128 wrote to memory of 1732	1128	PhotonExternal.exe	114

Views/modifies file attributes 1 TTPs 1 IoCs

defense_evasion

Hidden Files and Directories

T1564.001

pid	Process
4752	attrib.exe

C:\Users\Admin\AppData\Local\Temp\PhotonExternal.exe
"C:\Users\Admin\AppData\Local\Temp\PhotonExternal.exe"
1⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1128
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1144
- C:\Windows\SYSTEM32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\PhotonExternal.exe"
  2⤵
  - Views/modifies file attributes
  PID:4752
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\PhotonExternal.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:5104
- 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:3868
- 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:4252
- 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:1488
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:3420
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:1740
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:2000
- 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:3412
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:1732

C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe
"C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe" /ping 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-PGFwcCBhcHBpZD0iezhBNjlEMzQ1LUQ1NjQtNDYzYy1BRkYxLUE2OUQ5RTUzMEY5Nn0iIHZlcnNpb249IjEyMy4wLjYzMTIuMTIzIiBuZXh0dmVyc2lvbj0iIiBsYW5nPSJlbiIgYnJhbmQ9IkdHTFMiIGNsaWVudD0iIiBpbnN0YWxsYWdlPSIzIiBpbnN0YWxsZGF0ZXRpbWU9IjE3Mzg5NDY4ODkiIG9vYmVfaW5zdGFsbF90aW1lPSIxMzM4MzQxOTM2NTgwOTAwMDAiPjxldmVudCBldmVudHR5cGU9IjMxIiBldmVudHJlc3VsdD0iMSIgZXJyb3Jjb2RlPSIwIiBleHRyYWNvZGUxPSIyMTc5ODYyIiBzeXN0ZW1fdXB0aW1lX3RpY2tzPSI1Mjk0MDcwNjk4Ii8-PC9hcHA-PC9yZXF1ZXN0Pg
1⤵
- System Location Discovery: System Language Discovery
- System Network Configuration Discovery: Internet Connection Discovery
PID:1112

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

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

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
440cb38dbee06645cc8b74d51f6e5f71

SHA1
d7e61da91dc4502e9ae83281b88c1e48584edb7c

SHA256
8ef7a682dfd99ff5b7e9de0e1be43f0016d68695a43c33c028af2635cc15ecfe

SHA512
3aab19578535e6ba0f6beb5690c87d970292100704209d2dcebddcdd46c6bead27588ef5d98729bfd50606a54cc1edf608b3d15bef42c13b9982aaaf15de7fd6

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

Filesize
944B

MD5
4a154efa7af25bb8b94d0d9c7b4f15cd

SHA1
5e0e04103e4eef1bc7ef242b730aed1958f98e1f

SHA256
c216eda372556eb78e680bde247c2fd2085642ee33031905a213c6bec502ccce

SHA512
fc4678133318fe1952947be74e244246336c7faacc9b9ae32336d57b106ec8f044e5db41dd98e8f3a54270ddacab2fc84a66d5d67deeadc3056ea5213bcbbba4

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

Filesize
948B

MD5
1a58f982c18490e622e00d4eb75ace5a

SHA1
60c30527b74659ecf09089a5a7c02a1df9a71b65

SHA256
4b7f800c0dea209162cc86627983993127eb20e3f8616646c41cb3ce15d9b39d

SHA512
ddab516a967783c5951717853aa5b3ef6dd5b442db50092888b2e7f3179fc68120fcde69a08d6ab280740eaadb6eadfc758c3118b52706f869e48ac1aebda480

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

Filesize
1KB

MD5
276798eeb29a49dc6e199768bc9c2e71

SHA1
5fdc8ccb897ac2df7476fbb07517aca5b7a6205b

SHA256
cd0a1056e8f1b6cb5cb328532239d802f4e2aa8f8fcdc0fcb487684bd68e0dcc

SHA512
0d34fce64bbefc57d64fa6e03ca886952263d5f24df9c1c4cce6a1e8f5a47a9a21e9820f8d38caa7f7b43a52336ce00b738ea18419aaa7c788b72e04ce19e4f2

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

Filesize
1KB

MD5
ec79fae4e7c09310ebf4f2d85a33a638

SHA1
f2bdd995b12e65e7ed437d228f22223b59e76efb

SHA256
e9c4723a5fe34e081c3d2f548a1d472394cc7aa58056fcf44ca542061381243a

SHA512
af9dda12f6bb388d826fe03a4a8beed9bda23a978aa55a2af6a43271660ee896a7ee3bcf2c4d2f1e6180902791d8c23560f1c2ec097a501d8c6f4f6c49075625

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_45mffnkz.3tu.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1128-33-0x0000016342AC0000-0x0000016342B10000-memory.dmp

Filesize
320KB

Download
memory/1128-0-0x00007FFF46093000-0x00007FFF46095000-memory.dmp

Filesize
8KB

Download
memory/1128-32-0x0000016342A40000-0x0000016342AB6000-memory.dmp

Filesize
472KB

Download
memory/1128-4-0x00007FFF46090000-0x00007FFF46B51000-memory.dmp

Filesize
10.8MB

Download
memory/1128-3-0x00007FFF46093000-0x00007FFF46095000-memory.dmp

Filesize
8KB

Download
memory/1128-34-0x0000016342B60000-0x0000016342B7E000-memory.dmp

Filesize
120KB

Download
memory/1128-1-0x00000163282E0000-0x0000016328356000-memory.dmp

Filesize
472KB

Download
memory/1128-72-0x0000016342A20000-0x0000016342A32000-memory.dmp

Filesize
72KB

Download
memory/1128-71-0x00000163429F0000-0x00000163429FA000-memory.dmp

Filesize
40KB

Download
memory/1128-2-0x00007FFF46090000-0x00007FFF46B51000-memory.dmp

Filesize
10.8MB

Download
memory/5104-15-0x000001B973F00000-0x000001B973F22000-memory.dmp

Filesize
136KB

Download