umbral | cfb7119e9b1eea0c3f511fb51952399c3f10edb91e12030e49a30172b0510e7e

Analysis

max time kernel
122s
max time network
123s
platform
windows7_x64
resource
win7-20240705-en
resource tags

arch:x64arch:x86image:win7-20240705-enlocale:en-usos:windows7-x64system
submitted
23-08-2024 06:48

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General

Target

lol.exe
Size

229KB
MD5

ea031754ac9fe28dbc0c5915cb638e44
SHA1

14b2c7b94aefdfc911e26fc5deb6eb8b6d7c0aed
SHA256

cfb7119e9b1eea0c3f511fb51952399c3f10edb91e12030e49a30172b0510e7e
SHA512

39a0790b3bae0862b1ba87bd6d1165694ba09cfa5104935e00ebaa13924699b2efba92ee6e744d3d820a9c05f80fa41fa1649498dce8f430835e8c6e813c25bb
SSDEEP

6144:9loZM9rIkd8g+EtXHkv/iD4RugVzZqStvY5rWWDFZb8e1m7i:foZOL+EP8RugVzZqStvY5rWWD3V

Score

10^/10

umbral credential_access discovery execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/2140-1-0x0000000000EB0000-0x0000000000EF0000-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
2512	powershell.exe
2716	powershell.exe
2124	powershell.exe
2644	powershell.exe

Drops file in Drivers directory 1 IoCs

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

Deletes itself 1 IoCs

pid	Process
1900	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
8	discord.com
9	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
1900	cmd.exe
2204	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
2312	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2204	PING.EXE

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
2644	powershell.exe
2512	powershell.exe
2716	powershell.exe
1184	powershell.exe
2124	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2140	lol.exe
Token: SeDebugPrivilege	2644	powershell.exe
Token: SeDebugPrivilege	2512	powershell.exe
Token: SeDebugPrivilege	2716	powershell.exe
Token: SeDebugPrivilege	1184	powershell.exe
Token: SeIncreaseQuotaPrivilege	1496	wmic.exe
Token: SeSecurityPrivilege	1496	wmic.exe
Token: SeTakeOwnershipPrivilege	1496	wmic.exe
Token: SeLoadDriverPrivilege	1496	wmic.exe
Token: SeSystemProfilePrivilege	1496	wmic.exe
Token: SeSystemtimePrivilege	1496	wmic.exe
Token: SeProfSingleProcessPrivilege	1496	wmic.exe
Token: SeIncBasePriorityPrivilege	1496	wmic.exe
Token: SeCreatePagefilePrivilege	1496	wmic.exe
Token: SeBackupPrivilege	1496	wmic.exe
Token: SeRestorePrivilege	1496	wmic.exe
Token: SeShutdownPrivilege	1496	wmic.exe
Token: SeDebugPrivilege	1496	wmic.exe
Token: SeSystemEnvironmentPrivilege	1496	wmic.exe
Token: SeRemoteShutdownPrivilege	1496	wmic.exe
Token: SeUndockPrivilege	1496	wmic.exe
Token: SeManageVolumePrivilege	1496	wmic.exe
Token: 33	1496	wmic.exe
Token: 34	1496	wmic.exe
Token: 35	1496	wmic.exe
Token: SeIncreaseQuotaPrivilege	1496	wmic.exe
Token: SeSecurityPrivilege	1496	wmic.exe
Token: SeTakeOwnershipPrivilege	1496	wmic.exe
Token: SeLoadDriverPrivilege	1496	wmic.exe
Token: SeSystemProfilePrivilege	1496	wmic.exe
Token: SeSystemtimePrivilege	1496	wmic.exe
Token: SeProfSingleProcessPrivilege	1496	wmic.exe
Token: SeIncBasePriorityPrivilege	1496	wmic.exe
Token: SeCreatePagefilePrivilege	1496	wmic.exe
Token: SeBackupPrivilege	1496	wmic.exe
Token: SeRestorePrivilege	1496	wmic.exe
Token: SeShutdownPrivilege	1496	wmic.exe
Token: SeDebugPrivilege	1496	wmic.exe
Token: SeSystemEnvironmentPrivilege	1496	wmic.exe
Token: SeRemoteShutdownPrivilege	1496	wmic.exe
Token: SeUndockPrivilege	1496	wmic.exe
Token: SeManageVolumePrivilege	1496	wmic.exe
Token: 33	1496	wmic.exe
Token: 34	1496	wmic.exe
Token: 35	1496	wmic.exe
Token: SeIncreaseQuotaPrivilege	2860	wmic.exe
Token: SeSecurityPrivilege	2860	wmic.exe
Token: SeTakeOwnershipPrivilege	2860	wmic.exe
Token: SeLoadDriverPrivilege	2860	wmic.exe
Token: SeSystemProfilePrivilege	2860	wmic.exe
Token: SeSystemtimePrivilege	2860	wmic.exe
Token: SeProfSingleProcessPrivilege	2860	wmic.exe
Token: SeIncBasePriorityPrivilege	2860	wmic.exe
Token: SeCreatePagefilePrivilege	2860	wmic.exe
Token: SeBackupPrivilege	2860	wmic.exe
Token: SeRestorePrivilege	2860	wmic.exe
Token: SeShutdownPrivilege	2860	wmic.exe
Token: SeDebugPrivilege	2860	wmic.exe
Token: SeSystemEnvironmentPrivilege	2860	wmic.exe
Token: SeRemoteShutdownPrivilege	2860	wmic.exe
Token: SeUndockPrivilege	2860	wmic.exe
Token: SeManageVolumePrivilege	2860	wmic.exe
Token: 33	2860	wmic.exe
Token: 34	2860	wmic.exe

Suspicious use of WriteProcessMemory 36 IoCs

description	pid	Process	procid_target
PID 2140 wrote to memory of 2664	2140	lol.exe	30
PID 2140 wrote to memory of 2664	2140	lol.exe	30
PID 2140 wrote to memory of 2664	2140	lol.exe	30
PID 2140 wrote to memory of 2644	2140	lol.exe	32
PID 2140 wrote to memory of 2644	2140	lol.exe	32
PID 2140 wrote to memory of 2644	2140	lol.exe	32
PID 2140 wrote to memory of 2512	2140	lol.exe	34
PID 2140 wrote to memory of 2512	2140	lol.exe	34
PID 2140 wrote to memory of 2512	2140	lol.exe	34
PID 2140 wrote to memory of 2716	2140	lol.exe	36
PID 2140 wrote to memory of 2716	2140	lol.exe	36
PID 2140 wrote to memory of 2716	2140	lol.exe	36
PID 2140 wrote to memory of 1184	2140	lol.exe	38
PID 2140 wrote to memory of 1184	2140	lol.exe	38
PID 2140 wrote to memory of 1184	2140	lol.exe	38
PID 2140 wrote to memory of 1496	2140	lol.exe	40
PID 2140 wrote to memory of 1496	2140	lol.exe	40
PID 2140 wrote to memory of 1496	2140	lol.exe	40
PID 2140 wrote to memory of 2860	2140	lol.exe	43
PID 2140 wrote to memory of 2860	2140	lol.exe	43
PID 2140 wrote to memory of 2860	2140	lol.exe	43
PID 2140 wrote to memory of 2056	2140	lol.exe	45
PID 2140 wrote to memory of 2056	2140	lol.exe	45
PID 2140 wrote to memory of 2056	2140	lol.exe	45
PID 2140 wrote to memory of 2124	2140	lol.exe	47
PID 2140 wrote to memory of 2124	2140	lol.exe	47
PID 2140 wrote to memory of 2124	2140	lol.exe	47
PID 2140 wrote to memory of 2312	2140	lol.exe	49
PID 2140 wrote to memory of 2312	2140	lol.exe	49
PID 2140 wrote to memory of 2312	2140	lol.exe	49
PID 2140 wrote to memory of 1900	2140	lol.exe	51
PID 2140 wrote to memory of 1900	2140	lol.exe	51
PID 2140 wrote to memory of 1900	2140	lol.exe	51
PID 1900 wrote to memory of 2204	1900	cmd.exe	53
PID 1900 wrote to memory of 2204	1900	cmd.exe	53
PID 1900 wrote to memory of 2204	1900	cmd.exe	53

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
2664	attrib.exe

C:\Users\Admin\AppData\Local\Temp\lol.exe
"C:\Users\Admin\AppData\Local\Temp\lol.exe"
1⤵
- Drops file in Drivers directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2140
- C:\Windows\system32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\lol.exe"
  2⤵
  - Views/modifies file attributes
  PID:2664
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\lol.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2644
- 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:2512
- 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:2716
- 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:1184
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1496
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2860
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:2056
- 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:2124
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:2312
- C:\Windows\system32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\lol.exe" && pause
  2⤵
  - Deletes itself
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:1900
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:2204

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
e533f4c0e1b0603bbce007c61ecaef75

SHA1
6a7a9bb4cb383e248cce4a61dc8127c1d09314d8

SHA256
79f00de39b32529b6e446d9d53d20b157d9fad12aaeb1105039effe8b191bd54

SHA512
18e0a60e172aef2c72d1ca7839a30284e6cc6e184fac0ff485ef18388d50abe08edf89c85e17c6a7e4c953fd235026bfdc033109464c97d82e9ad93f79d384b2

Download Submit
memory/2124-51-0x000000001B6E0000-0x000000001B9C2000-memory.dmp

Filesize
2.9MB

Download
memory/2140-1-0x0000000000EB0000-0x0000000000EF0000-memory.dmp

Filesize
256KB

Download
memory/2140-2-0x000007FEF5780000-0x000007FEF616C000-memory.dmp

Filesize
9.9MB

Download
memory/2140-55-0x000007FEF5780000-0x000007FEF616C000-memory.dmp

Filesize
9.9MB

Download
memory/2140-0-0x000007FEF5783000-0x000007FEF5784000-memory.dmp

Filesize
4KB

Download
memory/2140-43-0x000007FEF5780000-0x000007FEF616C000-memory.dmp

Filesize
9.9MB

Download
memory/2140-41-0x000007FEF5783000-0x000007FEF5784000-memory.dmp

Filesize
4KB

Download
memory/2512-22-0x00000000027A0000-0x00000000027A8000-memory.dmp

Filesize
32KB

Download
memory/2512-21-0x000000001B6B0000-0x000000001B992000-memory.dmp

Filesize
2.9MB

Download
memory/2644-10-0x000007FEEC520000-0x000007FEECEBD000-memory.dmp

Filesize
9.6MB

Download
memory/2644-15-0x000007FEEC520000-0x000007FEECEBD000-memory.dmp

Filesize
9.6MB

Download
memory/2644-14-0x000007FEEC520000-0x000007FEECEBD000-memory.dmp

Filesize
9.6MB

Download
memory/2644-11-0x000007FEEC520000-0x000007FEECEBD000-memory.dmp

Filesize
9.6MB

Download
memory/2644-12-0x000007FEEC520000-0x000007FEECEBD000-memory.dmp

Filesize
9.6MB

Download
memory/2644-13-0x000007FEEC520000-0x000007FEECEBD000-memory.dmp

Filesize
9.6MB

Download
memory/2644-8-0x000000001B540000-0x000000001B822000-memory.dmp

Filesize
2.9MB

Download
memory/2644-9-0x0000000002790000-0x0000000002798000-memory.dmp

Filesize
32KB

Download
memory/2644-7-0x000007FEEC7DE000-0x000007FEEC7DF000-memory.dmp

Filesize
4KB

Download