umbral | fd88f68339f4a1f2f3892667bd5026d60a327d7f3ebe492a09901aa566bc66f5

Analysis

max time kernel
121s
max time network
122s
platform
windows7_x64
resource
win7-20241023-en
resource tags

arch:x64arch:x86image:win7-20241023-enlocale:en-usos:windows7-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
behavioral1/memory/2908-1-0x0000000000A90000-0x0000000000AD0000-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
2928	powershell.exe
3004	powershell.exe
2712	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
8	discord.com
9	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
6	ip-api.com

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
1472	wmic.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
2928	powershell.exe
2712	powershell.exe
3004	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2908	test.exe
Token: SeDebugPrivilege	2928	powershell.exe
Token: SeDebugPrivilege	2712	powershell.exe
Token: SeIncreaseQuotaPrivilege	1988	wmic.exe
Token: SeSecurityPrivilege	1988	wmic.exe
Token: SeTakeOwnershipPrivilege	1988	wmic.exe
Token: SeLoadDriverPrivilege	1988	wmic.exe
Token: SeSystemProfilePrivilege	1988	wmic.exe
Token: SeSystemtimePrivilege	1988	wmic.exe
Token: SeProfSingleProcessPrivilege	1988	wmic.exe
Token: SeIncBasePriorityPrivilege	1988	wmic.exe
Token: SeCreatePagefilePrivilege	1988	wmic.exe
Token: SeBackupPrivilege	1988	wmic.exe
Token: SeRestorePrivilege	1988	wmic.exe
Token: SeShutdownPrivilege	1988	wmic.exe
Token: SeDebugPrivilege	1988	wmic.exe
Token: SeSystemEnvironmentPrivilege	1988	wmic.exe
Token: SeRemoteShutdownPrivilege	1988	wmic.exe
Token: SeUndockPrivilege	1988	wmic.exe
Token: SeManageVolumePrivilege	1988	wmic.exe
Token: 33	1988	wmic.exe
Token: 34	1988	wmic.exe
Token: 35	1988	wmic.exe
Token: SeIncreaseQuotaPrivilege	1988	wmic.exe
Token: SeSecurityPrivilege	1988	wmic.exe
Token: SeTakeOwnershipPrivilege	1988	wmic.exe
Token: SeLoadDriverPrivilege	1988	wmic.exe
Token: SeSystemProfilePrivilege	1988	wmic.exe
Token: SeSystemtimePrivilege	1988	wmic.exe
Token: SeProfSingleProcessPrivilege	1988	wmic.exe
Token: SeIncBasePriorityPrivilege	1988	wmic.exe
Token: SeCreatePagefilePrivilege	1988	wmic.exe
Token: SeBackupPrivilege	1988	wmic.exe
Token: SeRestorePrivilege	1988	wmic.exe
Token: SeShutdownPrivilege	1988	wmic.exe
Token: SeDebugPrivilege	1988	wmic.exe
Token: SeSystemEnvironmentPrivilege	1988	wmic.exe
Token: SeRemoteShutdownPrivilege	1988	wmic.exe
Token: SeUndockPrivilege	1988	wmic.exe
Token: SeManageVolumePrivilege	1988	wmic.exe
Token: 33	1988	wmic.exe
Token: 34	1988	wmic.exe
Token: 35	1988	wmic.exe
Token: SeIncreaseQuotaPrivilege	2148	wmic.exe
Token: SeSecurityPrivilege	2148	wmic.exe
Token: SeTakeOwnershipPrivilege	2148	wmic.exe
Token: SeLoadDriverPrivilege	2148	wmic.exe
Token: SeSystemProfilePrivilege	2148	wmic.exe
Token: SeSystemtimePrivilege	2148	wmic.exe
Token: SeProfSingleProcessPrivilege	2148	wmic.exe
Token: SeIncBasePriorityPrivilege	2148	wmic.exe
Token: SeCreatePagefilePrivilege	2148	wmic.exe
Token: SeBackupPrivilege	2148	wmic.exe
Token: SeRestorePrivilege	2148	wmic.exe
Token: SeShutdownPrivilege	2148	wmic.exe
Token: SeDebugPrivilege	2148	wmic.exe
Token: SeSystemEnvironmentPrivilege	2148	wmic.exe
Token: SeRemoteShutdownPrivilege	2148	wmic.exe
Token: SeUndockPrivilege	2148	wmic.exe
Token: SeManageVolumePrivilege	2148	wmic.exe
Token: 33	2148	wmic.exe
Token: 34	2148	wmic.exe
Token: 35	2148	wmic.exe
Token: SeIncreaseQuotaPrivilege	2148	wmic.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 2908 wrote to memory of 2928	2908	test.exe	30
PID 2908 wrote to memory of 2928	2908	test.exe	30
PID 2908 wrote to memory of 2928	2908	test.exe	30
PID 2908 wrote to memory of 2712	2908	test.exe	32
PID 2908 wrote to memory of 2712	2908	test.exe	32
PID 2908 wrote to memory of 2712	2908	test.exe	32
PID 2908 wrote to memory of 1988	2908	test.exe	34
PID 2908 wrote to memory of 1988	2908	test.exe	34
PID 2908 wrote to memory of 1988	2908	test.exe	34
PID 2908 wrote to memory of 2148	2908	test.exe	37
PID 2908 wrote to memory of 2148	2908	test.exe	37
PID 2908 wrote to memory of 2148	2908	test.exe	37
PID 2908 wrote to memory of 1768	2908	test.exe	39
PID 2908 wrote to memory of 1768	2908	test.exe	39
PID 2908 wrote to memory of 1768	2908	test.exe	39
PID 2908 wrote to memory of 3004	2908	test.exe	41
PID 2908 wrote to memory of 3004	2908	test.exe	41
PID 2908 wrote to memory of 3004	2908	test.exe	41
PID 2908 wrote to memory of 1472	2908	test.exe	43
PID 2908 wrote to memory of 1472	2908	test.exe	43
PID 2908 wrote to memory of 1472	2908	test.exe	43

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:2908
- 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:2928
- 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:2712
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1988
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2148
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:1768
- 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:3004
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:1472

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

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Downloads

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\Z8U3D0E6O2PH5CLQFCH0.temp

Filesize
7KB

MD5
457c2503ce25545e7a3419cb173792a0

SHA1
263828d6646469e68804ccdb6507f12206c58801

SHA256
c45c4b3272fb1a570bada8213631f3c32388c5c7803d2fbc420f23e9116fb8c2

SHA512
93dfd2a21f510d0208f47032f9e53beb847b82a0788fc3710a5f940f88caad531027c3157cccda4d3786f7a09e2d797f5e6cc4acb21b25cd5167c00a63afc5ce

Download Submit
memory/2712-21-0x000000001B6B0000-0x000000001B992000-memory.dmp

Filesize
2.9MB

Download
memory/2712-22-0x0000000001D10000-0x0000000001D18000-memory.dmp

Filesize
32KB

Download
memory/2908-1-0x0000000000A90000-0x0000000000AD0000-memory.dmp

Filesize
256KB

Download
memory/2908-2-0x000007FEF66B0000-0x000007FEF709C000-memory.dmp

Filesize
9.9MB

Download
memory/2908-39-0x000007FEF66B0000-0x000007FEF709C000-memory.dmp

Filesize
9.9MB

Download
memory/2908-0-0x000007FEF66B3000-0x000007FEF66B4000-memory.dmp

Filesize
4KB

Download
memory/2908-36-0x000007FEF66B0000-0x000007FEF709C000-memory.dmp

Filesize
9.9MB

Download
memory/2908-35-0x000007FEF66B3000-0x000007FEF66B4000-memory.dmp

Filesize
4KB

Download
memory/2928-9-0x0000000000380000-0x0000000000388000-memory.dmp

Filesize
32KB

Download
memory/2928-14-0x000007FEEE180000-0x000007FEEEB1D000-memory.dmp

Filesize
9.6MB

Download
memory/2928-15-0x000007FEEE180000-0x000007FEEEB1D000-memory.dmp

Filesize
9.6MB

Download
memory/2928-13-0x000007FEEE180000-0x000007FEEEB1D000-memory.dmp

Filesize
9.6MB

Download
memory/2928-12-0x000007FEEE180000-0x000007FEEEB1D000-memory.dmp

Filesize
9.6MB

Download
memory/2928-10-0x000007FEEE180000-0x000007FEEEB1D000-memory.dmp

Filesize
9.6MB

Download
memory/2928-11-0x000007FEEE180000-0x000007FEEEB1D000-memory.dmp

Filesize
9.6MB

Download
memory/2928-7-0x000007FEEE43E000-0x000007FEEE43F000-memory.dmp

Filesize
4KB

Download
memory/2928-8-0x000000001B6B0000-0x000000001B992000-memory.dmp

Filesize
2.9MB

Download