umbral | 824d0e2ebaa40b7bca3bc0657338a13df78121172fe52e604f45c8033ab7537a

Analysis

max time kernel
117s
max time network
121s
platform
windows7_x64
resource
win7-20240704-en
resource tags

arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
submitted
06-08-2024 01:57

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General

Target

824d0e2ebaa40b7bca3bc0657338a13df78121172fe52e604f45c8033ab7537a.exe
Size

227KB
MD5

ef323a7483653ffb1fc4ff036576e065
SHA1

80e63b57a7ad6394f778c7aa5a855520f1533589
SHA256

824d0e2ebaa40b7bca3bc0657338a13df78121172fe52e604f45c8033ab7537a
SHA512

04785049f73acbacc2b0ea89e2bbc547ac6fa302eac4cbbd895f8d6a873c8b0dcfa8a8762d90847c9a0bf28862e12b294cb70f073019a6046bac104b9189ba7e
SSDEEP

6144:eloZM3fsXtioRkts/cnnK6cMluDdCFzQEb0CzFQMpnhb8e1msQci:IoZ1tlRk83MluDdCFzQEb0CzFQMpZ3K

Score

10^/10

umbral credential_access discovery execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/2304-1-0x0000000000940000-0x0000000000980000-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
2052	powershell.exe
2388	powershell.exe
2880	powershell.exe
396	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	824d0e2ebaa40b7bca3bc0657338a13df78121172fe52e604f45c8033ab7537a.exe

Deletes itself 1 IoCs

pid	Process
1028	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

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
7	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
1028	cmd.exe
2316	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
828	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2316	PING.EXE

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2304	824d0e2ebaa40b7bca3bc0657338a13df78121172fe52e604f45c8033ab7537a.exe
396	powershell.exe
2880	powershell.exe
2052	powershell.exe
588	powershell.exe
2388	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2304	824d0e2ebaa40b7bca3bc0657338a13df78121172fe52e604f45c8033ab7537a.exe
Token: SeIncreaseQuotaPrivilege	2472	wmic.exe
Token: SeSecurityPrivilege	2472	wmic.exe
Token: SeTakeOwnershipPrivilege	2472	wmic.exe
Token: SeLoadDriverPrivilege	2472	wmic.exe
Token: SeSystemProfilePrivilege	2472	wmic.exe
Token: SeSystemtimePrivilege	2472	wmic.exe
Token: SeProfSingleProcessPrivilege	2472	wmic.exe
Token: SeIncBasePriorityPrivilege	2472	wmic.exe
Token: SeCreatePagefilePrivilege	2472	wmic.exe
Token: SeBackupPrivilege	2472	wmic.exe
Token: SeRestorePrivilege	2472	wmic.exe
Token: SeShutdownPrivilege	2472	wmic.exe
Token: SeDebugPrivilege	2472	wmic.exe
Token: SeSystemEnvironmentPrivilege	2472	wmic.exe
Token: SeRemoteShutdownPrivilege	2472	wmic.exe
Token: SeUndockPrivilege	2472	wmic.exe
Token: SeManageVolumePrivilege	2472	wmic.exe
Token: 33	2472	wmic.exe
Token: 34	2472	wmic.exe
Token: 35	2472	wmic.exe
Token: SeIncreaseQuotaPrivilege	2472	wmic.exe
Token: SeSecurityPrivilege	2472	wmic.exe
Token: SeTakeOwnershipPrivilege	2472	wmic.exe
Token: SeLoadDriverPrivilege	2472	wmic.exe
Token: SeSystemProfilePrivilege	2472	wmic.exe
Token: SeSystemtimePrivilege	2472	wmic.exe
Token: SeProfSingleProcessPrivilege	2472	wmic.exe
Token: SeIncBasePriorityPrivilege	2472	wmic.exe
Token: SeCreatePagefilePrivilege	2472	wmic.exe
Token: SeBackupPrivilege	2472	wmic.exe
Token: SeRestorePrivilege	2472	wmic.exe
Token: SeShutdownPrivilege	2472	wmic.exe
Token: SeDebugPrivilege	2472	wmic.exe
Token: SeSystemEnvironmentPrivilege	2472	wmic.exe
Token: SeRemoteShutdownPrivilege	2472	wmic.exe
Token: SeUndockPrivilege	2472	wmic.exe
Token: SeManageVolumePrivilege	2472	wmic.exe
Token: 33	2472	wmic.exe
Token: 34	2472	wmic.exe
Token: 35	2472	wmic.exe
Token: SeDebugPrivilege	396	powershell.exe
Token: SeDebugPrivilege	2880	powershell.exe
Token: SeDebugPrivilege	2052	powershell.exe
Token: SeDebugPrivilege	588	powershell.exe
Token: SeIncreaseQuotaPrivilege	2312	wmic.exe
Token: SeSecurityPrivilege	2312	wmic.exe
Token: SeTakeOwnershipPrivilege	2312	wmic.exe
Token: SeLoadDriverPrivilege	2312	wmic.exe
Token: SeSystemProfilePrivilege	2312	wmic.exe
Token: SeSystemtimePrivilege	2312	wmic.exe
Token: SeProfSingleProcessPrivilege	2312	wmic.exe
Token: SeIncBasePriorityPrivilege	2312	wmic.exe
Token: SeCreatePagefilePrivilege	2312	wmic.exe
Token: SeBackupPrivilege	2312	wmic.exe
Token: SeRestorePrivilege	2312	wmic.exe
Token: SeShutdownPrivilege	2312	wmic.exe
Token: SeDebugPrivilege	2312	wmic.exe
Token: SeSystemEnvironmentPrivilege	2312	wmic.exe
Token: SeRemoteShutdownPrivilege	2312	wmic.exe
Token: SeUndockPrivilege	2312	wmic.exe
Token: SeManageVolumePrivilege	2312	wmic.exe
Token: 33	2312	wmic.exe
Token: 34	2312	wmic.exe

Suspicious use of WriteProcessMemory 39 IoCs

description	pid	Process	procid_target
PID 2304 wrote to memory of 2472	2304	824d0e2ebaa40b7bca3bc0657338a13df78121172fe52e604f45c8033ab7537a.exe	30
PID 2304 wrote to memory of 2472	2304	824d0e2ebaa40b7bca3bc0657338a13df78121172fe52e604f45c8033ab7537a.exe	30
PID 2304 wrote to memory of 2472	2304	824d0e2ebaa40b7bca3bc0657338a13df78121172fe52e604f45c8033ab7537a.exe	30
PID 2304 wrote to memory of 1928	2304	824d0e2ebaa40b7bca3bc0657338a13df78121172fe52e604f45c8033ab7537a.exe	33
PID 2304 wrote to memory of 1928	2304	824d0e2ebaa40b7bca3bc0657338a13df78121172fe52e604f45c8033ab7537a.exe	33
PID 2304 wrote to memory of 1928	2304	824d0e2ebaa40b7bca3bc0657338a13df78121172fe52e604f45c8033ab7537a.exe	33
PID 2304 wrote to memory of 396	2304	824d0e2ebaa40b7bca3bc0657338a13df78121172fe52e604f45c8033ab7537a.exe	35
PID 2304 wrote to memory of 396	2304	824d0e2ebaa40b7bca3bc0657338a13df78121172fe52e604f45c8033ab7537a.exe	35
PID 2304 wrote to memory of 396	2304	824d0e2ebaa40b7bca3bc0657338a13df78121172fe52e604f45c8033ab7537a.exe	35
PID 2304 wrote to memory of 2880	2304	824d0e2ebaa40b7bca3bc0657338a13df78121172fe52e604f45c8033ab7537a.exe	37
PID 2304 wrote to memory of 2880	2304	824d0e2ebaa40b7bca3bc0657338a13df78121172fe52e604f45c8033ab7537a.exe	37
PID 2304 wrote to memory of 2880	2304	824d0e2ebaa40b7bca3bc0657338a13df78121172fe52e604f45c8033ab7537a.exe	37
PID 2304 wrote to memory of 2052	2304	824d0e2ebaa40b7bca3bc0657338a13df78121172fe52e604f45c8033ab7537a.exe	39
PID 2304 wrote to memory of 2052	2304	824d0e2ebaa40b7bca3bc0657338a13df78121172fe52e604f45c8033ab7537a.exe	39
PID 2304 wrote to memory of 2052	2304	824d0e2ebaa40b7bca3bc0657338a13df78121172fe52e604f45c8033ab7537a.exe	39
PID 2304 wrote to memory of 588	2304	824d0e2ebaa40b7bca3bc0657338a13df78121172fe52e604f45c8033ab7537a.exe	41
PID 2304 wrote to memory of 588	2304	824d0e2ebaa40b7bca3bc0657338a13df78121172fe52e604f45c8033ab7537a.exe	41
PID 2304 wrote to memory of 588	2304	824d0e2ebaa40b7bca3bc0657338a13df78121172fe52e604f45c8033ab7537a.exe	41
PID 2304 wrote to memory of 2312	2304	824d0e2ebaa40b7bca3bc0657338a13df78121172fe52e604f45c8033ab7537a.exe	43
PID 2304 wrote to memory of 2312	2304	824d0e2ebaa40b7bca3bc0657338a13df78121172fe52e604f45c8033ab7537a.exe	43
PID 2304 wrote to memory of 2312	2304	824d0e2ebaa40b7bca3bc0657338a13df78121172fe52e604f45c8033ab7537a.exe	43
PID 2304 wrote to memory of 1988	2304	824d0e2ebaa40b7bca3bc0657338a13df78121172fe52e604f45c8033ab7537a.exe	45
PID 2304 wrote to memory of 1988	2304	824d0e2ebaa40b7bca3bc0657338a13df78121172fe52e604f45c8033ab7537a.exe	45
PID 2304 wrote to memory of 1988	2304	824d0e2ebaa40b7bca3bc0657338a13df78121172fe52e604f45c8033ab7537a.exe	45
PID 2304 wrote to memory of 1972	2304	824d0e2ebaa40b7bca3bc0657338a13df78121172fe52e604f45c8033ab7537a.exe	47
PID 2304 wrote to memory of 1972	2304	824d0e2ebaa40b7bca3bc0657338a13df78121172fe52e604f45c8033ab7537a.exe	47
PID 2304 wrote to memory of 1972	2304	824d0e2ebaa40b7bca3bc0657338a13df78121172fe52e604f45c8033ab7537a.exe	47
PID 2304 wrote to memory of 2388	2304	824d0e2ebaa40b7bca3bc0657338a13df78121172fe52e604f45c8033ab7537a.exe	49
PID 2304 wrote to memory of 2388	2304	824d0e2ebaa40b7bca3bc0657338a13df78121172fe52e604f45c8033ab7537a.exe	49
PID 2304 wrote to memory of 2388	2304	824d0e2ebaa40b7bca3bc0657338a13df78121172fe52e604f45c8033ab7537a.exe	49
PID 2304 wrote to memory of 828	2304	824d0e2ebaa40b7bca3bc0657338a13df78121172fe52e604f45c8033ab7537a.exe	51
PID 2304 wrote to memory of 828	2304	824d0e2ebaa40b7bca3bc0657338a13df78121172fe52e604f45c8033ab7537a.exe	51
PID 2304 wrote to memory of 828	2304	824d0e2ebaa40b7bca3bc0657338a13df78121172fe52e604f45c8033ab7537a.exe	51
PID 2304 wrote to memory of 1028	2304	824d0e2ebaa40b7bca3bc0657338a13df78121172fe52e604f45c8033ab7537a.exe	53
PID 2304 wrote to memory of 1028	2304	824d0e2ebaa40b7bca3bc0657338a13df78121172fe52e604f45c8033ab7537a.exe	53
PID 2304 wrote to memory of 1028	2304	824d0e2ebaa40b7bca3bc0657338a13df78121172fe52e604f45c8033ab7537a.exe	53
PID 1028 wrote to memory of 2316	1028	cmd.exe	55
PID 1028 wrote to memory of 2316	1028	cmd.exe	55
PID 1028 wrote to memory of 2316	1028	cmd.exe	55

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
1928	attrib.exe

C:\Users\Admin\AppData\Local\Temp\824d0e2ebaa40b7bca3bc0657338a13df78121172fe52e604f45c8033ab7537a.exe
"C:\Users\Admin\AppData\Local\Temp\824d0e2ebaa40b7bca3bc0657338a13df78121172fe52e604f45c8033ab7537a.exe"
1⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2304
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2472
- C:\Windows\system32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\824d0e2ebaa40b7bca3bc0657338a13df78121172fe52e604f45c8033ab7537a.exe"
  2⤵
  - Views/modifies file attributes
  PID:1928
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\824d0e2ebaa40b7bca3bc0657338a13df78121172fe52e604f45c8033ab7537a.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:396
- 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:2880
- 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:2052
- 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:588
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2312
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:1988
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:1972
- 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:2388
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:828
- C:\Windows\system32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\824d0e2ebaa40b7bca3bc0657338a13df78121172fe52e604f45c8033ab7537a.exe" && pause
  2⤵
  - Deletes itself
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:1028
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:2316

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

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms

Filesize
7KB

MD5
e79c127b0e9021629ccf0cd95beb5a32

SHA1
fc5945f2aa6825b6e96ec2ab0a1beac128cba8b9

SHA256
2ccbada8467fadf5ea3e142459bf9d5179cababa4dd6a067491139ec807646a4

SHA512
a5ac790871072de97e0bd3e2903afd2321f8cc8e31f461789f25116d39a54bd7ab4a9a974d20e7e29e874d40dcb9c18805c5a18b21425a961cbf79fdba31329e

Download Submit
memory/396-9-0x000000001B400000-0x000000001B6E2000-memory.dmp

Filesize
2.9MB

Download
memory/396-10-0x0000000002220000-0x0000000002228000-memory.dmp

Filesize
32KB

Download
memory/2304-3-0x000007FEF5003000-0x000007FEF5004000-memory.dmp

Filesize
4KB

Download
memory/2304-4-0x000007FEF5000000-0x000007FEF59EC000-memory.dmp

Filesize
9.9MB

Download
memory/2304-0-0x000007FEF5003000-0x000007FEF5004000-memory.dmp

Filesize
4KB

Download
memory/2304-2-0x000007FEF5000000-0x000007FEF59EC000-memory.dmp

Filesize
9.9MB

Download
memory/2304-1-0x0000000000940000-0x0000000000980000-memory.dmp

Filesize
256KB

Download
memory/2304-50-0x000007FEF5000000-0x000007FEF59EC000-memory.dmp

Filesize
9.9MB

Download
memory/2388-46-0x00000000023A0000-0x00000000023A8000-memory.dmp

Filesize
32KB

Download
memory/2880-16-0x000000001B2A0000-0x000000001B582000-memory.dmp

Filesize
2.9MB

Download
memory/2880-17-0x0000000002390000-0x0000000002398000-memory.dmp

Filesize
32KB

Download