umbral | fd88f68339f4a1f2f3892667bd5026d60a327d7f3ebe492a09901aa566bc66f5

Analysis

max time kernel
149s
max time network
143s
platform
windows10-2004_x64
resource
win10v2004-20250314-en
resource tags

arch:x64arch:x86image:win10v2004-20250314-enlocale:en-usos:windows10-2004-x64system
submitted
22/03/2025, 06:18

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General

Target

test.exe
Size

231KB
MD5

79dbb36ad4aa16d2ba9b0dc335c29663
SHA1

2806cf13d56759fe3015c7b7ba2b4f0439dce3f0
SHA256

fd88f68339f4a1f2f3892667bd5026d60a327d7f3ebe492a09901aa566bc66f5
SHA512

1ae155087e5c1a2c8fc9f44eb3c43bcf4d0f4b4d4a5b56f8b49140db51e1f4a488d2ea917c0731ffb2f182401dbe18682d5571ca0fb09e9e67622bd017bb61f7
SSDEEP

6144:9loZMprIkd8g+EtXHkv/iD4iXptbhS6FgAxDeebVfBb8e1m3oi:foZCL+EP8iXptbhS6FgAxDeebVxa

Score

10^/10

umbral execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral2/memory/4980-1-0x0000026689BC0000-0x0000026689C00000-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
3876	powershell.exe
1956	powershell.exe
5088	powershell.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
28	discord.com
29	discord.com

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
21	ip-api.com

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
3712	wmic.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
3876	powershell.exe
3876	powershell.exe
1956	powershell.exe
1956	powershell.exe
5088	powershell.exe
5088	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	4980	test.exe
Token: SeDebugPrivilege	3876	powershell.exe
Token: SeDebugPrivilege	1956	powershell.exe
Token: SeIncreaseQuotaPrivilege	5276	wmic.exe
Token: SeSecurityPrivilege	5276	wmic.exe
Token: SeTakeOwnershipPrivilege	5276	wmic.exe
Token: SeLoadDriverPrivilege	5276	wmic.exe
Token: SeSystemProfilePrivilege	5276	wmic.exe
Token: SeSystemtimePrivilege	5276	wmic.exe
Token: SeProfSingleProcessPrivilege	5276	wmic.exe
Token: SeIncBasePriorityPrivilege	5276	wmic.exe
Token: SeCreatePagefilePrivilege	5276	wmic.exe
Token: SeBackupPrivilege	5276	wmic.exe
Token: SeRestorePrivilege	5276	wmic.exe
Token: SeShutdownPrivilege	5276	wmic.exe
Token: SeDebugPrivilege	5276	wmic.exe
Token: SeSystemEnvironmentPrivilege	5276	wmic.exe
Token: SeRemoteShutdownPrivilege	5276	wmic.exe
Token: SeUndockPrivilege	5276	wmic.exe
Token: SeManageVolumePrivilege	5276	wmic.exe
Token: 33	5276	wmic.exe
Token: 34	5276	wmic.exe
Token: 35	5276	wmic.exe
Token: 36	5276	wmic.exe
Token: SeIncreaseQuotaPrivilege	5276	wmic.exe
Token: SeSecurityPrivilege	5276	wmic.exe
Token: SeTakeOwnershipPrivilege	5276	wmic.exe
Token: SeLoadDriverPrivilege	5276	wmic.exe
Token: SeSystemProfilePrivilege	5276	wmic.exe
Token: SeSystemtimePrivilege	5276	wmic.exe
Token: SeProfSingleProcessPrivilege	5276	wmic.exe
Token: SeIncBasePriorityPrivilege	5276	wmic.exe
Token: SeCreatePagefilePrivilege	5276	wmic.exe
Token: SeBackupPrivilege	5276	wmic.exe
Token: SeRestorePrivilege	5276	wmic.exe
Token: SeShutdownPrivilege	5276	wmic.exe
Token: SeDebugPrivilege	5276	wmic.exe
Token: SeSystemEnvironmentPrivilege	5276	wmic.exe
Token: SeRemoteShutdownPrivilege	5276	wmic.exe
Token: SeUndockPrivilege	5276	wmic.exe
Token: SeManageVolumePrivilege	5276	wmic.exe
Token: 33	5276	wmic.exe
Token: 34	5276	wmic.exe
Token: 35	5276	wmic.exe
Token: 36	5276	wmic.exe
Token: SeIncreaseQuotaPrivilege	5484	wmic.exe
Token: SeSecurityPrivilege	5484	wmic.exe
Token: SeTakeOwnershipPrivilege	5484	wmic.exe
Token: SeLoadDriverPrivilege	5484	wmic.exe
Token: SeSystemProfilePrivilege	5484	wmic.exe
Token: SeSystemtimePrivilege	5484	wmic.exe
Token: SeProfSingleProcessPrivilege	5484	wmic.exe
Token: SeIncBasePriorityPrivilege	5484	wmic.exe
Token: SeCreatePagefilePrivilege	5484	wmic.exe
Token: SeBackupPrivilege	5484	wmic.exe
Token: SeRestorePrivilege	5484	wmic.exe
Token: SeShutdownPrivilege	5484	wmic.exe
Token: SeDebugPrivilege	5484	wmic.exe
Token: SeSystemEnvironmentPrivilege	5484	wmic.exe
Token: SeRemoteShutdownPrivilege	5484	wmic.exe
Token: SeUndockPrivilege	5484	wmic.exe
Token: SeManageVolumePrivilege	5484	wmic.exe
Token: 33	5484	wmic.exe
Token: 34	5484	wmic.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 4980 wrote to memory of 3876	4980	test.exe	90
PID 4980 wrote to memory of 3876	4980	test.exe	90
PID 4980 wrote to memory of 1956	4980	test.exe	93
PID 4980 wrote to memory of 1956	4980	test.exe	93
PID 4980 wrote to memory of 5276	4980	test.exe	95
PID 4980 wrote to memory of 5276	4980	test.exe	95
PID 4980 wrote to memory of 5484	4980	test.exe	98
PID 4980 wrote to memory of 5484	4980	test.exe	98
PID 4980 wrote to memory of 5456	4980	test.exe	100
PID 4980 wrote to memory of 5456	4980	test.exe	100
PID 4980 wrote to memory of 5088	4980	test.exe	102
PID 4980 wrote to memory of 5088	4980	test.exe	102
PID 4980 wrote to memory of 3712	4980	test.exe	104
PID 4980 wrote to memory of 3712	4980	test.exe	104

C:\Users\Admin\AppData\Local\Temp\test.exe
"C:\Users\Admin\AppData\Local\Temp\test.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4980
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\test.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3876
- 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:1956
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:5276
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:5484
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:5456
- 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:5088
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:3712

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

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

Web Service

T1102

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
029fbf628b046653ab7ff10b31deeeb2

SHA1
93c2cb1905c8f5e71f5ea97a1e8a8c891eae077c

SHA256
85f6b0971e94daf9fd4e39413824f162851a9f5ce7f989bd92c903a4dbcbef26

SHA512
d4e3626dba2572bd1e53446b384962f955cc0c7e56a72cacf50a845d74714ec1020bcb0fdcc50636a1dfd4f08dc34143dbb5638dd90180df6aa31dab9228c98c

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

Filesize
948B

MD5
966914e2e771de7a4a57a95b6ecfa8a9

SHA1
7a32282fd51dd032967ed4d9a40cc57e265aeff2

SHA256
98d3c70d7004fa807897317bd6cd3e977b9b6c72d4d2565aca0f9f8b1c315cba

SHA512
dc39c7124a9c7c8d4c7e8e16290c46360b8d9a8f4e43edaacbbeb09bdcf20159a53db54d2b322372001b6a3de52b2f88e9088b5fdbc7638816ae0d122bb015f5

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_l5k0rqul.neg.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/3876-18-0x00007FFEEA460000-0x00007FFEEAF21000-memory.dmp

Filesize
10.8MB

Download
memory/3876-13-0x00007FFEEA460000-0x00007FFEEAF21000-memory.dmp

Filesize
10.8MB

Download
memory/3876-14-0x00007FFEEA460000-0x00007FFEEAF21000-memory.dmp

Filesize
10.8MB

Download
memory/3876-15-0x00007FFEEA460000-0x00007FFEEAF21000-memory.dmp

Filesize
10.8MB

Download
memory/3876-12-0x000001E9B2620000-0x000001E9B2642000-memory.dmp

Filesize
136KB

Download
memory/4980-31-0x00000266A42F0000-0x00000266A4340000-memory.dmp

Filesize
320KB

Download
memory/4980-2-0x00007FFEEA460000-0x00007FFEEAF21000-memory.dmp

Filesize
10.8MB

Download
memory/4980-0-0x00007FFEEA463000-0x00007FFEEA465000-memory.dmp

Filesize
8KB

Download
memory/4980-32-0x00000266A4340000-0x00000266A43B6000-memory.dmp

Filesize
472KB

Download
memory/4980-33-0x00000266A4020000-0x00000266A403E000-memory.dmp

Filesize
120KB

Download
memory/4980-41-0x00000266A43C0000-0x00000266A43D2000-memory.dmp

Filesize
72KB

Download
memory/4980-40-0x00000266A4040000-0x00000266A404A000-memory.dmp

Filesize
40KB

Download
memory/4980-1-0x0000026689BC0000-0x0000026689C00000-memory.dmp

Filesize
256KB

Download
memory/4980-57-0x00007FFEEA460000-0x00007FFEEAF21000-memory.dmp

Filesize
10.8MB

Download