umbral | 6a856e121efd06bea72dbf93e24570e3c08e9859795e8234492254559f9aff53

Analysis

max time kernel
122s
max time network
123s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
13-01-2025 06:14

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General

Target

6a856e121efd06bea72dbf93e24570e3c08e9859795e8234492254559f9aff53.exe
Size

257KB
MD5

c30f9465054f33e6dea1a2ba5cb206e7
SHA1

6c2609663a7aa38f738b0104785ab1ba469af013
SHA256

6a856e121efd06bea72dbf93e24570e3c08e9859795e8234492254559f9aff53
SHA512

181eee666cc26508697e50843ccf55e3c46dad0598b1f493d44f1c6dde8ca84df1d77eaecea0f289386a570d49e9aa2c6daa4b3f617659b092912a22adb6dc0d
SSDEEP

6144:floZM+rIkd8g+EtXHkv/iD4u76SecjfUx1gevPehab8e1mZRXLijK7so:doZtL+EP8u76SecjfUx1gevPeIqRWjKL

Score

10^/10

umbral discovery execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/1924-1-0x0000000000DD0000-0x0000000000E16000-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

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

execution

PowerShell

T1059.001

pid	Process
2708	powershell.exe
1500	powershell.exe
1476	powershell.exe
2076	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	6a856e121efd06bea72dbf93e24570e3c08e9859795e8234492254559f9aff53.exe

Deletes itself 1 IoCs

pid	Process
2188	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
10	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
2188	cmd.exe
2156	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
2320	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2156	PING.EXE

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
1924	6a856e121efd06bea72dbf93e24570e3c08e9859795e8234492254559f9aff53.exe
2708	powershell.exe
1500	powershell.exe
1476	powershell.exe
1976	powershell.exe
2076	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	1924	6a856e121efd06bea72dbf93e24570e3c08e9859795e8234492254559f9aff53.exe
Token: SeIncreaseQuotaPrivilege	2688	wmic.exe
Token: SeSecurityPrivilege	2688	wmic.exe
Token: SeTakeOwnershipPrivilege	2688	wmic.exe
Token: SeLoadDriverPrivilege	2688	wmic.exe
Token: SeSystemProfilePrivilege	2688	wmic.exe
Token: SeSystemtimePrivilege	2688	wmic.exe
Token: SeProfSingleProcessPrivilege	2688	wmic.exe
Token: SeIncBasePriorityPrivilege	2688	wmic.exe
Token: SeCreatePagefilePrivilege	2688	wmic.exe
Token: SeBackupPrivilege	2688	wmic.exe
Token: SeRestorePrivilege	2688	wmic.exe
Token: SeShutdownPrivilege	2688	wmic.exe
Token: SeDebugPrivilege	2688	wmic.exe
Token: SeSystemEnvironmentPrivilege	2688	wmic.exe
Token: SeRemoteShutdownPrivilege	2688	wmic.exe
Token: SeUndockPrivilege	2688	wmic.exe
Token: SeManageVolumePrivilege	2688	wmic.exe
Token: 33	2688	wmic.exe
Token: 34	2688	wmic.exe
Token: 35	2688	wmic.exe
Token: SeIncreaseQuotaPrivilege	2688	wmic.exe
Token: SeSecurityPrivilege	2688	wmic.exe
Token: SeTakeOwnershipPrivilege	2688	wmic.exe
Token: SeLoadDriverPrivilege	2688	wmic.exe
Token: SeSystemProfilePrivilege	2688	wmic.exe
Token: SeSystemtimePrivilege	2688	wmic.exe
Token: SeProfSingleProcessPrivilege	2688	wmic.exe
Token: SeIncBasePriorityPrivilege	2688	wmic.exe
Token: SeCreatePagefilePrivilege	2688	wmic.exe
Token: SeBackupPrivilege	2688	wmic.exe
Token: SeRestorePrivilege	2688	wmic.exe
Token: SeShutdownPrivilege	2688	wmic.exe
Token: SeDebugPrivilege	2688	wmic.exe
Token: SeSystemEnvironmentPrivilege	2688	wmic.exe
Token: SeRemoteShutdownPrivilege	2688	wmic.exe
Token: SeUndockPrivilege	2688	wmic.exe
Token: SeManageVolumePrivilege	2688	wmic.exe
Token: 33	2688	wmic.exe
Token: 34	2688	wmic.exe
Token: 35	2688	wmic.exe
Token: SeDebugPrivilege	2708	powershell.exe
Token: SeDebugPrivilege	1500	powershell.exe
Token: SeDebugPrivilege	1476	powershell.exe
Token: SeDebugPrivilege	1976	powershell.exe
Token: SeIncreaseQuotaPrivilege	2908	wmic.exe
Token: SeSecurityPrivilege	2908	wmic.exe
Token: SeTakeOwnershipPrivilege	2908	wmic.exe
Token: SeLoadDriverPrivilege	2908	wmic.exe
Token: SeSystemProfilePrivilege	2908	wmic.exe
Token: SeSystemtimePrivilege	2908	wmic.exe
Token: SeProfSingleProcessPrivilege	2908	wmic.exe
Token: SeIncBasePriorityPrivilege	2908	wmic.exe
Token: SeCreatePagefilePrivilege	2908	wmic.exe
Token: SeBackupPrivilege	2908	wmic.exe
Token: SeRestorePrivilege	2908	wmic.exe
Token: SeShutdownPrivilege	2908	wmic.exe
Token: SeDebugPrivilege	2908	wmic.exe
Token: SeSystemEnvironmentPrivilege	2908	wmic.exe
Token: SeRemoteShutdownPrivilege	2908	wmic.exe
Token: SeUndockPrivilege	2908	wmic.exe
Token: SeManageVolumePrivilege	2908	wmic.exe
Token: 33	2908	wmic.exe
Token: 34	2908	wmic.exe

Suspicious use of WriteProcessMemory 39 IoCs

description	pid	Process	procid_target
PID 1924 wrote to memory of 2688	1924	6a856e121efd06bea72dbf93e24570e3c08e9859795e8234492254559f9aff53.exe	30
PID 1924 wrote to memory of 2688	1924	6a856e121efd06bea72dbf93e24570e3c08e9859795e8234492254559f9aff53.exe	30
PID 1924 wrote to memory of 2688	1924	6a856e121efd06bea72dbf93e24570e3c08e9859795e8234492254559f9aff53.exe	30
PID 1924 wrote to memory of 2580	1924	6a856e121efd06bea72dbf93e24570e3c08e9859795e8234492254559f9aff53.exe	33
PID 1924 wrote to memory of 2580	1924	6a856e121efd06bea72dbf93e24570e3c08e9859795e8234492254559f9aff53.exe	33
PID 1924 wrote to memory of 2580	1924	6a856e121efd06bea72dbf93e24570e3c08e9859795e8234492254559f9aff53.exe	33
PID 1924 wrote to memory of 2708	1924	6a856e121efd06bea72dbf93e24570e3c08e9859795e8234492254559f9aff53.exe	35
PID 1924 wrote to memory of 2708	1924	6a856e121efd06bea72dbf93e24570e3c08e9859795e8234492254559f9aff53.exe	35
PID 1924 wrote to memory of 2708	1924	6a856e121efd06bea72dbf93e24570e3c08e9859795e8234492254559f9aff53.exe	35
PID 1924 wrote to memory of 1500	1924	6a856e121efd06bea72dbf93e24570e3c08e9859795e8234492254559f9aff53.exe	37
PID 1924 wrote to memory of 1500	1924	6a856e121efd06bea72dbf93e24570e3c08e9859795e8234492254559f9aff53.exe	37
PID 1924 wrote to memory of 1500	1924	6a856e121efd06bea72dbf93e24570e3c08e9859795e8234492254559f9aff53.exe	37
PID 1924 wrote to memory of 1476	1924	6a856e121efd06bea72dbf93e24570e3c08e9859795e8234492254559f9aff53.exe	39
PID 1924 wrote to memory of 1476	1924	6a856e121efd06bea72dbf93e24570e3c08e9859795e8234492254559f9aff53.exe	39
PID 1924 wrote to memory of 1476	1924	6a856e121efd06bea72dbf93e24570e3c08e9859795e8234492254559f9aff53.exe	39
PID 1924 wrote to memory of 1976	1924	6a856e121efd06bea72dbf93e24570e3c08e9859795e8234492254559f9aff53.exe	41
PID 1924 wrote to memory of 1976	1924	6a856e121efd06bea72dbf93e24570e3c08e9859795e8234492254559f9aff53.exe	41
PID 1924 wrote to memory of 1976	1924	6a856e121efd06bea72dbf93e24570e3c08e9859795e8234492254559f9aff53.exe	41
PID 1924 wrote to memory of 2908	1924	6a856e121efd06bea72dbf93e24570e3c08e9859795e8234492254559f9aff53.exe	43
PID 1924 wrote to memory of 2908	1924	6a856e121efd06bea72dbf93e24570e3c08e9859795e8234492254559f9aff53.exe	43
PID 1924 wrote to memory of 2908	1924	6a856e121efd06bea72dbf93e24570e3c08e9859795e8234492254559f9aff53.exe	43
PID 1924 wrote to memory of 624	1924	6a856e121efd06bea72dbf93e24570e3c08e9859795e8234492254559f9aff53.exe	45
PID 1924 wrote to memory of 624	1924	6a856e121efd06bea72dbf93e24570e3c08e9859795e8234492254559f9aff53.exe	45
PID 1924 wrote to memory of 624	1924	6a856e121efd06bea72dbf93e24570e3c08e9859795e8234492254559f9aff53.exe	45
PID 1924 wrote to memory of 2916	1924	6a856e121efd06bea72dbf93e24570e3c08e9859795e8234492254559f9aff53.exe	47
PID 1924 wrote to memory of 2916	1924	6a856e121efd06bea72dbf93e24570e3c08e9859795e8234492254559f9aff53.exe	47
PID 1924 wrote to memory of 2916	1924	6a856e121efd06bea72dbf93e24570e3c08e9859795e8234492254559f9aff53.exe	47
PID 1924 wrote to memory of 2076	1924	6a856e121efd06bea72dbf93e24570e3c08e9859795e8234492254559f9aff53.exe	49
PID 1924 wrote to memory of 2076	1924	6a856e121efd06bea72dbf93e24570e3c08e9859795e8234492254559f9aff53.exe	49
PID 1924 wrote to memory of 2076	1924	6a856e121efd06bea72dbf93e24570e3c08e9859795e8234492254559f9aff53.exe	49
PID 1924 wrote to memory of 2320	1924	6a856e121efd06bea72dbf93e24570e3c08e9859795e8234492254559f9aff53.exe	51
PID 1924 wrote to memory of 2320	1924	6a856e121efd06bea72dbf93e24570e3c08e9859795e8234492254559f9aff53.exe	51
PID 1924 wrote to memory of 2320	1924	6a856e121efd06bea72dbf93e24570e3c08e9859795e8234492254559f9aff53.exe	51
PID 1924 wrote to memory of 2188	1924	6a856e121efd06bea72dbf93e24570e3c08e9859795e8234492254559f9aff53.exe	53
PID 1924 wrote to memory of 2188	1924	6a856e121efd06bea72dbf93e24570e3c08e9859795e8234492254559f9aff53.exe	53
PID 1924 wrote to memory of 2188	1924	6a856e121efd06bea72dbf93e24570e3c08e9859795e8234492254559f9aff53.exe	53
PID 2188 wrote to memory of 2156	2188	cmd.exe	55
PID 2188 wrote to memory of 2156	2188	cmd.exe	55
PID 2188 wrote to memory of 2156	2188	cmd.exe	55

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
2580	attrib.exe

C:\Users\Admin\AppData\Local\Temp\6a856e121efd06bea72dbf93e24570e3c08e9859795e8234492254559f9aff53.exe
"C:\Users\Admin\AppData\Local\Temp\6a856e121efd06bea72dbf93e24570e3c08e9859795e8234492254559f9aff53.exe"
1⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1924
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2688
- C:\Windows\system32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\6a856e121efd06bea72dbf93e24570e3c08e9859795e8234492254559f9aff53.exe"
  2⤵
  - Views/modifies file attributes
  PID:2580
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\6a856e121efd06bea72dbf93e24570e3c08e9859795e8234492254559f9aff53.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2708
- 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:1500
- 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:1476
- 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:1976
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2908
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:624
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:2916
- 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:2076
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:2320
- C:\Windows\system32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\6a856e121efd06bea72dbf93e24570e3c08e9859795e8234492254559f9aff53.exe" && pause
  2⤵
  - Deletes itself
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:2188
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:2156

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
34635b6ececc5d3229d41f624c4536b0

SHA1
b751236622edccbdb42ce2ee19613dcb797cf480

SHA256
784dd62d9a49b1429ccdb9cf6d581696da0d15bf90d10ec7e777f7a0170b2874

SHA512
d858a07352745c9f40a735de53778698c65344fc430c97d5a6abddf67efd8dfcf32185e818f235d50e8dc618c7789102c469de1683d6e8ce63713305d2095a46

Download Submit
memory/1500-14-0x000000001B6C0000-0x000000001B9A2000-memory.dmp

Filesize
2.9MB

Download
memory/1500-15-0x0000000001D30000-0x0000000001D38000-memory.dmp

Filesize
32KB

Download
memory/1924-0-0x000007FEF55D3000-0x000007FEF55D4000-memory.dmp

Filesize
4KB

Download
memory/1924-1-0x0000000000DD0000-0x0000000000E16000-memory.dmp

Filesize
280KB

Download
memory/1924-2-0x000007FEF55D0000-0x000007FEF5FBC000-memory.dmp

Filesize
9.9MB

Download
memory/1924-48-0x000007FEF55D0000-0x000007FEF5FBC000-memory.dmp

Filesize
9.9MB

Download
memory/2076-44-0x0000000002810000-0x0000000002818000-memory.dmp

Filesize
32KB

Download
memory/2708-7-0x000000001B620000-0x000000001B902000-memory.dmp

Filesize
2.9MB

Download
memory/2708-8-0x0000000002790000-0x0000000002798000-memory.dmp

Filesize
32KB

Download