umbral | 591be99ca233dc0bfb5e64b9fc22309c7019f401375aa2fcf0fc87ef3789c371

Analysis

max time kernel
117s
max time network
118s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
16-01-2025 11:06

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General

Target

591be99ca233dc0bfb5e64b9fc22309c7019f401375aa2fcf0fc87ef3789c371N.exe
Size

231KB
MD5

6666c618cfef7187d04f9eb7d0cda700
SHA1

3a3ae164b936113dd895dc1d6bf69ff8e13b4ebe
SHA256

591be99ca233dc0bfb5e64b9fc22309c7019f401375aa2fcf0fc87ef3789c371
SHA512

10b100b9c8d173a1d340e76325b2a52273ef9121c2b560f80d26e785606e60a5a291d9df3f80b442b0ab9e0a5368344881beca4236d604021a74a78ba1acc3ce
SSDEEP

6144:RloZM9rIkd8g+EtXHkv/iD4vhjKEKtFuYr20VJg1Jb8e1mti:joZOL+EP8vhjKEKtFuYr20VJgPr

Score

10^/10

umbral discovery execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/3020-1-0x0000000001070000-0x00000000010B0000-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
2628	powershell.exe
2176	powershell.exe
2428	powershell.exe
2796	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	591be99ca233dc0bfb5e64b9fc22309c7019f401375aa2fcf0fc87ef3789c371N.exe

Deletes itself 1 IoCs

pid	Process
2964	cmd.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
9	discord.com
8	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

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 2 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
2964	cmd.exe
1136	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
2172	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
1136	PING.EXE

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
2796	powershell.exe
2628	powershell.exe
2176	powershell.exe
1452	powershell.exe
2428	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	3020	591be99ca233dc0bfb5e64b9fc22309c7019f401375aa2fcf0fc87ef3789c371N.exe
Token: SeDebugPrivilege	2796	powershell.exe
Token: SeDebugPrivilege	2628	powershell.exe
Token: SeDebugPrivilege	2176	powershell.exe
Token: SeDebugPrivilege	1452	powershell.exe
Token: SeIncreaseQuotaPrivilege	1040	wmic.exe
Token: SeSecurityPrivilege	1040	wmic.exe
Token: SeTakeOwnershipPrivilege	1040	wmic.exe
Token: SeLoadDriverPrivilege	1040	wmic.exe
Token: SeSystemProfilePrivilege	1040	wmic.exe
Token: SeSystemtimePrivilege	1040	wmic.exe
Token: SeProfSingleProcessPrivilege	1040	wmic.exe
Token: SeIncBasePriorityPrivilege	1040	wmic.exe
Token: SeCreatePagefilePrivilege	1040	wmic.exe
Token: SeBackupPrivilege	1040	wmic.exe
Token: SeRestorePrivilege	1040	wmic.exe
Token: SeShutdownPrivilege	1040	wmic.exe
Token: SeDebugPrivilege	1040	wmic.exe
Token: SeSystemEnvironmentPrivilege	1040	wmic.exe
Token: SeRemoteShutdownPrivilege	1040	wmic.exe
Token: SeUndockPrivilege	1040	wmic.exe
Token: SeManageVolumePrivilege	1040	wmic.exe
Token: 33	1040	wmic.exe
Token: 34	1040	wmic.exe
Token: 35	1040	wmic.exe
Token: SeIncreaseQuotaPrivilege	1040	wmic.exe
Token: SeSecurityPrivilege	1040	wmic.exe
Token: SeTakeOwnershipPrivilege	1040	wmic.exe
Token: SeLoadDriverPrivilege	1040	wmic.exe
Token: SeSystemProfilePrivilege	1040	wmic.exe
Token: SeSystemtimePrivilege	1040	wmic.exe
Token: SeProfSingleProcessPrivilege	1040	wmic.exe
Token: SeIncBasePriorityPrivilege	1040	wmic.exe
Token: SeCreatePagefilePrivilege	1040	wmic.exe
Token: SeBackupPrivilege	1040	wmic.exe
Token: SeRestorePrivilege	1040	wmic.exe
Token: SeShutdownPrivilege	1040	wmic.exe
Token: SeDebugPrivilege	1040	wmic.exe
Token: SeSystemEnvironmentPrivilege	1040	wmic.exe
Token: SeRemoteShutdownPrivilege	1040	wmic.exe
Token: SeUndockPrivilege	1040	wmic.exe
Token: SeManageVolumePrivilege	1040	wmic.exe
Token: 33	1040	wmic.exe
Token: 34	1040	wmic.exe
Token: 35	1040	wmic.exe
Token: SeIncreaseQuotaPrivilege	836	wmic.exe
Token: SeSecurityPrivilege	836	wmic.exe
Token: SeTakeOwnershipPrivilege	836	wmic.exe
Token: SeLoadDriverPrivilege	836	wmic.exe
Token: SeSystemProfilePrivilege	836	wmic.exe
Token: SeSystemtimePrivilege	836	wmic.exe
Token: SeProfSingleProcessPrivilege	836	wmic.exe
Token: SeIncBasePriorityPrivilege	836	wmic.exe
Token: SeCreatePagefilePrivilege	836	wmic.exe
Token: SeBackupPrivilege	836	wmic.exe
Token: SeRestorePrivilege	836	wmic.exe
Token: SeShutdownPrivilege	836	wmic.exe
Token: SeDebugPrivilege	836	wmic.exe
Token: SeSystemEnvironmentPrivilege	836	wmic.exe
Token: SeRemoteShutdownPrivilege	836	wmic.exe
Token: SeUndockPrivilege	836	wmic.exe
Token: SeManageVolumePrivilege	836	wmic.exe
Token: 33	836	wmic.exe
Token: 34	836	wmic.exe

Suspicious use of WriteProcessMemory 36 IoCs

description	pid	Process	procid_target
PID 3020 wrote to memory of 3016	3020	591be99ca233dc0bfb5e64b9fc22309c7019f401375aa2fcf0fc87ef3789c371N.exe	30
PID 3020 wrote to memory of 3016	3020	591be99ca233dc0bfb5e64b9fc22309c7019f401375aa2fcf0fc87ef3789c371N.exe	30
PID 3020 wrote to memory of 3016	3020	591be99ca233dc0bfb5e64b9fc22309c7019f401375aa2fcf0fc87ef3789c371N.exe	30
PID 3020 wrote to memory of 2796	3020	591be99ca233dc0bfb5e64b9fc22309c7019f401375aa2fcf0fc87ef3789c371N.exe	32
PID 3020 wrote to memory of 2796	3020	591be99ca233dc0bfb5e64b9fc22309c7019f401375aa2fcf0fc87ef3789c371N.exe	32
PID 3020 wrote to memory of 2796	3020	591be99ca233dc0bfb5e64b9fc22309c7019f401375aa2fcf0fc87ef3789c371N.exe	32
PID 3020 wrote to memory of 2628	3020	591be99ca233dc0bfb5e64b9fc22309c7019f401375aa2fcf0fc87ef3789c371N.exe	34
PID 3020 wrote to memory of 2628	3020	591be99ca233dc0bfb5e64b9fc22309c7019f401375aa2fcf0fc87ef3789c371N.exe	34
PID 3020 wrote to memory of 2628	3020	591be99ca233dc0bfb5e64b9fc22309c7019f401375aa2fcf0fc87ef3789c371N.exe	34
PID 3020 wrote to memory of 2176	3020	591be99ca233dc0bfb5e64b9fc22309c7019f401375aa2fcf0fc87ef3789c371N.exe	36
PID 3020 wrote to memory of 2176	3020	591be99ca233dc0bfb5e64b9fc22309c7019f401375aa2fcf0fc87ef3789c371N.exe	36
PID 3020 wrote to memory of 2176	3020	591be99ca233dc0bfb5e64b9fc22309c7019f401375aa2fcf0fc87ef3789c371N.exe	36
PID 3020 wrote to memory of 1452	3020	591be99ca233dc0bfb5e64b9fc22309c7019f401375aa2fcf0fc87ef3789c371N.exe	38
PID 3020 wrote to memory of 1452	3020	591be99ca233dc0bfb5e64b9fc22309c7019f401375aa2fcf0fc87ef3789c371N.exe	38
PID 3020 wrote to memory of 1452	3020	591be99ca233dc0bfb5e64b9fc22309c7019f401375aa2fcf0fc87ef3789c371N.exe	38
PID 3020 wrote to memory of 1040	3020	591be99ca233dc0bfb5e64b9fc22309c7019f401375aa2fcf0fc87ef3789c371N.exe	40
PID 3020 wrote to memory of 1040	3020	591be99ca233dc0bfb5e64b9fc22309c7019f401375aa2fcf0fc87ef3789c371N.exe	40
PID 3020 wrote to memory of 1040	3020	591be99ca233dc0bfb5e64b9fc22309c7019f401375aa2fcf0fc87ef3789c371N.exe	40
PID 3020 wrote to memory of 836	3020	591be99ca233dc0bfb5e64b9fc22309c7019f401375aa2fcf0fc87ef3789c371N.exe	43
PID 3020 wrote to memory of 836	3020	591be99ca233dc0bfb5e64b9fc22309c7019f401375aa2fcf0fc87ef3789c371N.exe	43
PID 3020 wrote to memory of 836	3020	591be99ca233dc0bfb5e64b9fc22309c7019f401375aa2fcf0fc87ef3789c371N.exe	43
PID 3020 wrote to memory of 2024	3020	591be99ca233dc0bfb5e64b9fc22309c7019f401375aa2fcf0fc87ef3789c371N.exe	45
PID 3020 wrote to memory of 2024	3020	591be99ca233dc0bfb5e64b9fc22309c7019f401375aa2fcf0fc87ef3789c371N.exe	45
PID 3020 wrote to memory of 2024	3020	591be99ca233dc0bfb5e64b9fc22309c7019f401375aa2fcf0fc87ef3789c371N.exe	45
PID 3020 wrote to memory of 2428	3020	591be99ca233dc0bfb5e64b9fc22309c7019f401375aa2fcf0fc87ef3789c371N.exe	47
PID 3020 wrote to memory of 2428	3020	591be99ca233dc0bfb5e64b9fc22309c7019f401375aa2fcf0fc87ef3789c371N.exe	47
PID 3020 wrote to memory of 2428	3020	591be99ca233dc0bfb5e64b9fc22309c7019f401375aa2fcf0fc87ef3789c371N.exe	47
PID 3020 wrote to memory of 2172	3020	591be99ca233dc0bfb5e64b9fc22309c7019f401375aa2fcf0fc87ef3789c371N.exe	49
PID 3020 wrote to memory of 2172	3020	591be99ca233dc0bfb5e64b9fc22309c7019f401375aa2fcf0fc87ef3789c371N.exe	49
PID 3020 wrote to memory of 2172	3020	591be99ca233dc0bfb5e64b9fc22309c7019f401375aa2fcf0fc87ef3789c371N.exe	49
PID 3020 wrote to memory of 2964	3020	591be99ca233dc0bfb5e64b9fc22309c7019f401375aa2fcf0fc87ef3789c371N.exe	51
PID 3020 wrote to memory of 2964	3020	591be99ca233dc0bfb5e64b9fc22309c7019f401375aa2fcf0fc87ef3789c371N.exe	51
PID 3020 wrote to memory of 2964	3020	591be99ca233dc0bfb5e64b9fc22309c7019f401375aa2fcf0fc87ef3789c371N.exe	51
PID 2964 wrote to memory of 1136	2964	cmd.exe	53
PID 2964 wrote to memory of 1136	2964	cmd.exe	53
PID 2964 wrote to memory of 1136	2964	cmd.exe	53

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
3016	attrib.exe

C:\Users\Admin\AppData\Local\Temp\591be99ca233dc0bfb5e64b9fc22309c7019f401375aa2fcf0fc87ef3789c371N.exe
"C:\Users\Admin\AppData\Local\Temp\591be99ca233dc0bfb5e64b9fc22309c7019f401375aa2fcf0fc87ef3789c371N.exe"
1⤵
- Drops file in Drivers directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3020
- C:\Windows\system32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\591be99ca233dc0bfb5e64b9fc22309c7019f401375aa2fcf0fc87ef3789c371N.exe"
  2⤵
  - Views/modifies file attributes
  PID:3016
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\591be99ca233dc0bfb5e64b9fc22309c7019f401375aa2fcf0fc87ef3789c371N.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2796
- 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:2628
- 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:2176
- 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:1452
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1040
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:836
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:2024
- 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:2428
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:2172
- C:\Windows\system32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\591be99ca233dc0bfb5e64b9fc22309c7019f401375aa2fcf0fc87ef3789c371N.exe" && pause
  2⤵
  - Deletes itself
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:2964
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:1136

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

Remote System Discovery

T1018

System Information Discovery

T1082

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\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms

Filesize
7KB

MD5
4527338fcc15a6a7c87905e06610fae4

SHA1
89b6f55f51abe51537a1359c077654b1ace2700d

SHA256
d0334f8f7363b078ace7fd40fc9148ca5d911f9b2779e4230634fb4d2a48e952

SHA512
5898dc76ce39579fdd20b30973d02a34a4c0dbd9cffce4b2426c7bb07e4314beb823098acd63e92671ef091af3cda8ca58d8da9e9084a674b40500585ebf2e7d

Download Submit
memory/2428-51-0x000000001B600000-0x000000001B8E2000-memory.dmp

Filesize
2.9MB

Download
memory/2628-21-0x0000000001EF0000-0x0000000001EF8000-memory.dmp

Filesize
32KB

Download
memory/2628-20-0x000000001B770000-0x000000001BA52000-memory.dmp

Filesize
2.9MB

Download
memory/2796-9-0x000000001B5F0000-0x000000001B8D2000-memory.dmp

Filesize
2.9MB

Download
memory/2796-7-0x000007FEEDA4E000-0x000007FEEDA4F000-memory.dmp

Filesize
4KB

Download
memory/2796-11-0x000007FEED790000-0x000007FEEE12D000-memory.dmp

Filesize
9.6MB

Download
memory/2796-12-0x000007FEED790000-0x000007FEEE12D000-memory.dmp

Filesize
9.6MB

Download
memory/2796-13-0x000007FEED790000-0x000007FEEE12D000-memory.dmp

Filesize
9.6MB

Download
memory/2796-14-0x000007FEED790000-0x000007FEEE12D000-memory.dmp

Filesize
9.6MB

Download
memory/2796-10-0x0000000002810000-0x0000000002818000-memory.dmp

Filesize
32KB

Download
memory/2796-8-0x000007FEED790000-0x000007FEEE12D000-memory.dmp

Filesize
9.6MB

Download
memory/3020-0-0x000007FEF56A3000-0x000007FEF56A4000-memory.dmp

Filesize
4KB

Download
memory/3020-2-0x000007FEF56A0000-0x000007FEF608C000-memory.dmp

Filesize
9.9MB

Download
memory/3020-44-0x000007FEF56A3000-0x000007FEF56A4000-memory.dmp

Filesize
4KB

Download
memory/3020-45-0x000007FEF56A0000-0x000007FEF608C000-memory.dmp

Filesize
9.9MB

Download
memory/3020-1-0x0000000001070000-0x00000000010B0000-memory.dmp

Filesize
256KB

Download
memory/3020-55-0x000007FEF56A0000-0x000007FEF608C000-memory.dmp

Filesize
9.9MB

Download