umbral | 09a094b3db589ae741341a5b319dd0baa2f3a22695363df32e76a62d319e49ee

Analysis

max time kernel
118s
max time network
119s
platform
windows7_x64
resource
win7-20240704-en
resource tags

arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
submitted
15-08-2024 15:19

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General

Target

fd5d2801e25b13aa35b9e5cc40103690N.exe
Size

231KB
MD5

fd5d2801e25b13aa35b9e5cc40103690
SHA1

9bafc097f3f22caaacfb262dbe9bb4404c65a5d6
SHA256

09a094b3db589ae741341a5b319dd0baa2f3a22695363df32e76a62d319e49ee
SHA512

1f9e1f6d5de55c790361a95b9a5ab627617cafc9dd34a72fdf0dd0878b129423779d1006c2e5aa0ecc90b90500b12d6f6910cab0b81dd0f68bb0f0b670620761
SSDEEP

6144:xloZM3fsXtioRkts/cnnK6cMlh6gQdwwVLxCqVGQhTuOLf2b8e1mZgQi:DoZ1tlRk83Mlh6gQdwwVLxCqVGQhTuO

Score

10^/10

umbral credential_access discovery execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/2488-1-0x0000000001280000-0x00000000012C0000-memory.dmp	family_umbral

Umbral
Umbral stealer is an opensource moduler stealer written in C#.
stealer umbral
Credentials from Password Stores: Credentials from Web Browsers 1 TTPs
Malicious Access or copy of Web Browser Credential store.
credential_access stealer

Credentials from Web Browsers
T1555.003

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
2832	powershell.exe
776	powershell.exe
2884	powershell.exe
2600	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	fd5d2801e25b13aa35b9e5cc40103690N.exe

Deletes itself 1 IoCs

pid	Process
2500	cmd.exe

Reads user/profile data of web browsers 2 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

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
2500	cmd.exe
1032	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
2148	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
1032	PING.EXE

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2488	fd5d2801e25b13aa35b9e5cc40103690N.exe
2832	powershell.exe
2884	powershell.exe
2600	powershell.exe
916	powershell.exe
776	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2488	fd5d2801e25b13aa35b9e5cc40103690N.exe
Token: SeIncreaseQuotaPrivilege	1696	wmic.exe
Token: SeSecurityPrivilege	1696	wmic.exe
Token: SeTakeOwnershipPrivilege	1696	wmic.exe
Token: SeLoadDriverPrivilege	1696	wmic.exe
Token: SeSystemProfilePrivilege	1696	wmic.exe
Token: SeSystemtimePrivilege	1696	wmic.exe
Token: SeProfSingleProcessPrivilege	1696	wmic.exe
Token: SeIncBasePriorityPrivilege	1696	wmic.exe
Token: SeCreatePagefilePrivilege	1696	wmic.exe
Token: SeBackupPrivilege	1696	wmic.exe
Token: SeRestorePrivilege	1696	wmic.exe
Token: SeShutdownPrivilege	1696	wmic.exe
Token: SeDebugPrivilege	1696	wmic.exe
Token: SeSystemEnvironmentPrivilege	1696	wmic.exe
Token: SeRemoteShutdownPrivilege	1696	wmic.exe
Token: SeUndockPrivilege	1696	wmic.exe
Token: SeManageVolumePrivilege	1696	wmic.exe
Token: 33	1696	wmic.exe
Token: 34	1696	wmic.exe
Token: 35	1696	wmic.exe
Token: SeIncreaseQuotaPrivilege	1696	wmic.exe
Token: SeSecurityPrivilege	1696	wmic.exe
Token: SeTakeOwnershipPrivilege	1696	wmic.exe
Token: SeLoadDriverPrivilege	1696	wmic.exe
Token: SeSystemProfilePrivilege	1696	wmic.exe
Token: SeSystemtimePrivilege	1696	wmic.exe
Token: SeProfSingleProcessPrivilege	1696	wmic.exe
Token: SeIncBasePriorityPrivilege	1696	wmic.exe
Token: SeCreatePagefilePrivilege	1696	wmic.exe
Token: SeBackupPrivilege	1696	wmic.exe
Token: SeRestorePrivilege	1696	wmic.exe
Token: SeShutdownPrivilege	1696	wmic.exe
Token: SeDebugPrivilege	1696	wmic.exe
Token: SeSystemEnvironmentPrivilege	1696	wmic.exe
Token: SeRemoteShutdownPrivilege	1696	wmic.exe
Token: SeUndockPrivilege	1696	wmic.exe
Token: SeManageVolumePrivilege	1696	wmic.exe
Token: 33	1696	wmic.exe
Token: 34	1696	wmic.exe
Token: 35	1696	wmic.exe
Token: SeDebugPrivilege	2832	powershell.exe
Token: SeDebugPrivilege	2884	powershell.exe
Token: SeDebugPrivilege	2600	powershell.exe
Token: SeDebugPrivilege	916	powershell.exe
Token: SeIncreaseQuotaPrivilege	1184	wmic.exe
Token: SeSecurityPrivilege	1184	wmic.exe
Token: SeTakeOwnershipPrivilege	1184	wmic.exe
Token: SeLoadDriverPrivilege	1184	wmic.exe
Token: SeSystemProfilePrivilege	1184	wmic.exe
Token: SeSystemtimePrivilege	1184	wmic.exe
Token: SeProfSingleProcessPrivilege	1184	wmic.exe
Token: SeIncBasePriorityPrivilege	1184	wmic.exe
Token: SeCreatePagefilePrivilege	1184	wmic.exe
Token: SeBackupPrivilege	1184	wmic.exe
Token: SeRestorePrivilege	1184	wmic.exe
Token: SeShutdownPrivilege	1184	wmic.exe
Token: SeDebugPrivilege	1184	wmic.exe
Token: SeSystemEnvironmentPrivilege	1184	wmic.exe
Token: SeRemoteShutdownPrivilege	1184	wmic.exe
Token: SeUndockPrivilege	1184	wmic.exe
Token: SeManageVolumePrivilege	1184	wmic.exe
Token: 33	1184	wmic.exe
Token: 34	1184	wmic.exe

Suspicious use of WriteProcessMemory 39 IoCs

description	pid	Process	procid_target
PID 2488 wrote to memory of 1696	2488	fd5d2801e25b13aa35b9e5cc40103690N.exe	31
PID 2488 wrote to memory of 1696	2488	fd5d2801e25b13aa35b9e5cc40103690N.exe	31
PID 2488 wrote to memory of 1696	2488	fd5d2801e25b13aa35b9e5cc40103690N.exe	31
PID 2488 wrote to memory of 2804	2488	fd5d2801e25b13aa35b9e5cc40103690N.exe	34
PID 2488 wrote to memory of 2804	2488	fd5d2801e25b13aa35b9e5cc40103690N.exe	34
PID 2488 wrote to memory of 2804	2488	fd5d2801e25b13aa35b9e5cc40103690N.exe	34
PID 2488 wrote to memory of 2832	2488	fd5d2801e25b13aa35b9e5cc40103690N.exe	36
PID 2488 wrote to memory of 2832	2488	fd5d2801e25b13aa35b9e5cc40103690N.exe	36
PID 2488 wrote to memory of 2832	2488	fd5d2801e25b13aa35b9e5cc40103690N.exe	36
PID 2488 wrote to memory of 2884	2488	fd5d2801e25b13aa35b9e5cc40103690N.exe	38
PID 2488 wrote to memory of 2884	2488	fd5d2801e25b13aa35b9e5cc40103690N.exe	38
PID 2488 wrote to memory of 2884	2488	fd5d2801e25b13aa35b9e5cc40103690N.exe	38
PID 2488 wrote to memory of 2600	2488	fd5d2801e25b13aa35b9e5cc40103690N.exe	40
PID 2488 wrote to memory of 2600	2488	fd5d2801e25b13aa35b9e5cc40103690N.exe	40
PID 2488 wrote to memory of 2600	2488	fd5d2801e25b13aa35b9e5cc40103690N.exe	40
PID 2488 wrote to memory of 916	2488	fd5d2801e25b13aa35b9e5cc40103690N.exe	42
PID 2488 wrote to memory of 916	2488	fd5d2801e25b13aa35b9e5cc40103690N.exe	42
PID 2488 wrote to memory of 916	2488	fd5d2801e25b13aa35b9e5cc40103690N.exe	42
PID 2488 wrote to memory of 1184	2488	fd5d2801e25b13aa35b9e5cc40103690N.exe	44
PID 2488 wrote to memory of 1184	2488	fd5d2801e25b13aa35b9e5cc40103690N.exe	44
PID 2488 wrote to memory of 1184	2488	fd5d2801e25b13aa35b9e5cc40103690N.exe	44
PID 2488 wrote to memory of 904	2488	fd5d2801e25b13aa35b9e5cc40103690N.exe	46
PID 2488 wrote to memory of 904	2488	fd5d2801e25b13aa35b9e5cc40103690N.exe	46
PID 2488 wrote to memory of 904	2488	fd5d2801e25b13aa35b9e5cc40103690N.exe	46
PID 2488 wrote to memory of 1224	2488	fd5d2801e25b13aa35b9e5cc40103690N.exe	48
PID 2488 wrote to memory of 1224	2488	fd5d2801e25b13aa35b9e5cc40103690N.exe	48
PID 2488 wrote to memory of 1224	2488	fd5d2801e25b13aa35b9e5cc40103690N.exe	48
PID 2488 wrote to memory of 776	2488	fd5d2801e25b13aa35b9e5cc40103690N.exe	50
PID 2488 wrote to memory of 776	2488	fd5d2801e25b13aa35b9e5cc40103690N.exe	50
PID 2488 wrote to memory of 776	2488	fd5d2801e25b13aa35b9e5cc40103690N.exe	50
PID 2488 wrote to memory of 2148	2488	fd5d2801e25b13aa35b9e5cc40103690N.exe	52
PID 2488 wrote to memory of 2148	2488	fd5d2801e25b13aa35b9e5cc40103690N.exe	52
PID 2488 wrote to memory of 2148	2488	fd5d2801e25b13aa35b9e5cc40103690N.exe	52
PID 2488 wrote to memory of 2500	2488	fd5d2801e25b13aa35b9e5cc40103690N.exe	54
PID 2488 wrote to memory of 2500	2488	fd5d2801e25b13aa35b9e5cc40103690N.exe	54
PID 2488 wrote to memory of 2500	2488	fd5d2801e25b13aa35b9e5cc40103690N.exe	54
PID 2500 wrote to memory of 1032	2500	cmd.exe	56
PID 2500 wrote to memory of 1032	2500	cmd.exe	56
PID 2500 wrote to memory of 1032	2500	cmd.exe	56

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
2804	attrib.exe

C:\Users\Admin\AppData\Local\Temp\fd5d2801e25b13aa35b9e5cc40103690N.exe
"C:\Users\Admin\AppData\Local\Temp\fd5d2801e25b13aa35b9e5cc40103690N.exe"
1⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2488
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1696
- C:\Windows\system32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\fd5d2801e25b13aa35b9e5cc40103690N.exe"
  2⤵
  - Views/modifies file attributes
  PID:2804
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\fd5d2801e25b13aa35b9e5cc40103690N.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2832
- 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:2884
- 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:2600
- 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:916
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1184
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:904
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:1224
- 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:776
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:2148
- C:\Windows\system32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\fd5d2801e25b13aa35b9e5cc40103690N.exe" && pause
  2⤵
  - Deletes itself
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:2500
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:1032

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

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\BET9YS0UGSIEPF3JPUBH.temp

Filesize
7KB

MD5
07fed48cd8c2d48dd6b61790abd0caab

SHA1
873c951fa40427fa9f5b7e5b0466f6e5e57e2fc8

SHA256
e9b5ddb28071f68b9bbdb21ee341c7f836981b8a660fff348bb88cbb08700ceb

SHA512
3b6d3d2a2aa5e0867ecab85f7425341ebd3b977bbfa927343f4606f02d274427726e30353137f86907812514793245abed8aba9565c57fccd4dda53599e3f3a2

Download Submit
memory/776-43-0x00000000029F0000-0x00000000029F8000-memory.dmp

Filesize
32KB

Download
memory/2488-0-0x000007FEF5DB3000-0x000007FEF5DB4000-memory.dmp

Filesize
4KB

Download
memory/2488-1-0x0000000001280000-0x00000000012C0000-memory.dmp

Filesize
256KB

Download
memory/2488-2-0x000007FEF5DB0000-0x000007FEF679C000-memory.dmp

Filesize
9.9MB

Download
memory/2488-47-0x000007FEF5DB0000-0x000007FEF679C000-memory.dmp

Filesize
9.9MB

Download
memory/2832-7-0x000000001B650000-0x000000001B932000-memory.dmp

Filesize
2.9MB

Download
memory/2832-8-0x00000000028E0000-0x00000000028E8000-memory.dmp

Filesize
32KB

Download
memory/2884-14-0x000000001B800000-0x000000001BAE2000-memory.dmp

Filesize
2.9MB

Download
memory/2884-15-0x0000000002240000-0x0000000002248000-memory.dmp

Filesize
32KB

Download