umbral | d97cfbdcbd68d0080286dde7cb1906e84c954d5471f08ba98608c5f3b6af3f2d

Analysis

max time kernel
120s
max time network
120s
platform
windows7_x64
resource
win7-20240704-en
resource tags

arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
submitted
16-08-2024 04:29

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General

Target

d97cfbdcbd68d0080286dde7cb1906e84c954d5471f08ba98608c5f3b6af3f2d.exe
Size

230KB
MD5

553d6d65dbaee07e841b22b0987c0331
SHA1

499325af4eb554638411e3e47b146cc8662f693a
SHA256

d97cfbdcbd68d0080286dde7cb1906e84c954d5471f08ba98608c5f3b6af3f2d
SHA512

e4b3c0b1211ce292eb7a781e98da5960936e28abd84f473c66105217e9de505f89fee1b46ac776953403d0aa433d47226c3f0b6dbfd5dd3cc7b4a44058964e96
SSDEEP

6144:dloZM+rIkd8g+EtXHkv/iD4mEHhtxds8e1minfi:/oZtL+EP8Trx86

Score

10^/10

umbral credential_access discovery execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/1240-1-0x0000000000A50000-0x0000000000A90000-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
2668	powershell.exe
1112	powershell.exe
1780	powershell.exe
1992	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	d97cfbdcbd68d0080286dde7cb1906e84c954d5471f08ba98608c5f3b6af3f2d.exe

Deletes itself 1 IoCs

pid	Process
3040	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
3040	cmd.exe
1064	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
2852	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
1064	PING.EXE

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
1240	d97cfbdcbd68d0080286dde7cb1906e84c954d5471f08ba98608c5f3b6af3f2d.exe
1992	powershell.exe
2668	powershell.exe
1112	powershell.exe
2024	powershell.exe
1780	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	1240	d97cfbdcbd68d0080286dde7cb1906e84c954d5471f08ba98608c5f3b6af3f2d.exe
Token: SeIncreaseQuotaPrivilege	2404	wmic.exe
Token: SeSecurityPrivilege	2404	wmic.exe
Token: SeTakeOwnershipPrivilege	2404	wmic.exe
Token: SeLoadDriverPrivilege	2404	wmic.exe
Token: SeSystemProfilePrivilege	2404	wmic.exe
Token: SeSystemtimePrivilege	2404	wmic.exe
Token: SeProfSingleProcessPrivilege	2404	wmic.exe
Token: SeIncBasePriorityPrivilege	2404	wmic.exe
Token: SeCreatePagefilePrivilege	2404	wmic.exe
Token: SeBackupPrivilege	2404	wmic.exe
Token: SeRestorePrivilege	2404	wmic.exe
Token: SeShutdownPrivilege	2404	wmic.exe
Token: SeDebugPrivilege	2404	wmic.exe
Token: SeSystemEnvironmentPrivilege	2404	wmic.exe
Token: SeRemoteShutdownPrivilege	2404	wmic.exe
Token: SeUndockPrivilege	2404	wmic.exe
Token: SeManageVolumePrivilege	2404	wmic.exe
Token: 33	2404	wmic.exe
Token: 34	2404	wmic.exe
Token: 35	2404	wmic.exe
Token: SeIncreaseQuotaPrivilege	2404	wmic.exe
Token: SeSecurityPrivilege	2404	wmic.exe
Token: SeTakeOwnershipPrivilege	2404	wmic.exe
Token: SeLoadDriverPrivilege	2404	wmic.exe
Token: SeSystemProfilePrivilege	2404	wmic.exe
Token: SeSystemtimePrivilege	2404	wmic.exe
Token: SeProfSingleProcessPrivilege	2404	wmic.exe
Token: SeIncBasePriorityPrivilege	2404	wmic.exe
Token: SeCreatePagefilePrivilege	2404	wmic.exe
Token: SeBackupPrivilege	2404	wmic.exe
Token: SeRestorePrivilege	2404	wmic.exe
Token: SeShutdownPrivilege	2404	wmic.exe
Token: SeDebugPrivilege	2404	wmic.exe
Token: SeSystemEnvironmentPrivilege	2404	wmic.exe
Token: SeRemoteShutdownPrivilege	2404	wmic.exe
Token: SeUndockPrivilege	2404	wmic.exe
Token: SeManageVolumePrivilege	2404	wmic.exe
Token: 33	2404	wmic.exe
Token: 34	2404	wmic.exe
Token: 35	2404	wmic.exe
Token: SeDebugPrivilege	1992	powershell.exe
Token: SeDebugPrivilege	2668	powershell.exe
Token: SeDebugPrivilege	1112	powershell.exe
Token: SeDebugPrivilege	2024	powershell.exe
Token: SeIncreaseQuotaPrivilege	2052	wmic.exe
Token: SeSecurityPrivilege	2052	wmic.exe
Token: SeTakeOwnershipPrivilege	2052	wmic.exe
Token: SeLoadDriverPrivilege	2052	wmic.exe
Token: SeSystemProfilePrivilege	2052	wmic.exe
Token: SeSystemtimePrivilege	2052	wmic.exe
Token: SeProfSingleProcessPrivilege	2052	wmic.exe
Token: SeIncBasePriorityPrivilege	2052	wmic.exe
Token: SeCreatePagefilePrivilege	2052	wmic.exe
Token: SeBackupPrivilege	2052	wmic.exe
Token: SeRestorePrivilege	2052	wmic.exe
Token: SeShutdownPrivilege	2052	wmic.exe
Token: SeDebugPrivilege	2052	wmic.exe
Token: SeSystemEnvironmentPrivilege	2052	wmic.exe
Token: SeRemoteShutdownPrivilege	2052	wmic.exe
Token: SeUndockPrivilege	2052	wmic.exe
Token: SeManageVolumePrivilege	2052	wmic.exe
Token: 33	2052	wmic.exe
Token: 34	2052	wmic.exe

Suspicious use of WriteProcessMemory 39 IoCs

description	pid	Process	procid_target
PID 1240 wrote to memory of 2404	1240	d97cfbdcbd68d0080286dde7cb1906e84c954d5471f08ba98608c5f3b6af3f2d.exe	30
PID 1240 wrote to memory of 2404	1240	d97cfbdcbd68d0080286dde7cb1906e84c954d5471f08ba98608c5f3b6af3f2d.exe	30
PID 1240 wrote to memory of 2404	1240	d97cfbdcbd68d0080286dde7cb1906e84c954d5471f08ba98608c5f3b6af3f2d.exe	30
PID 1240 wrote to memory of 2248	1240	d97cfbdcbd68d0080286dde7cb1906e84c954d5471f08ba98608c5f3b6af3f2d.exe	33
PID 1240 wrote to memory of 2248	1240	d97cfbdcbd68d0080286dde7cb1906e84c954d5471f08ba98608c5f3b6af3f2d.exe	33
PID 1240 wrote to memory of 2248	1240	d97cfbdcbd68d0080286dde7cb1906e84c954d5471f08ba98608c5f3b6af3f2d.exe	33
PID 1240 wrote to memory of 1992	1240	d97cfbdcbd68d0080286dde7cb1906e84c954d5471f08ba98608c5f3b6af3f2d.exe	35
PID 1240 wrote to memory of 1992	1240	d97cfbdcbd68d0080286dde7cb1906e84c954d5471f08ba98608c5f3b6af3f2d.exe	35
PID 1240 wrote to memory of 1992	1240	d97cfbdcbd68d0080286dde7cb1906e84c954d5471f08ba98608c5f3b6af3f2d.exe	35
PID 1240 wrote to memory of 2668	1240	d97cfbdcbd68d0080286dde7cb1906e84c954d5471f08ba98608c5f3b6af3f2d.exe	37
PID 1240 wrote to memory of 2668	1240	d97cfbdcbd68d0080286dde7cb1906e84c954d5471f08ba98608c5f3b6af3f2d.exe	37
PID 1240 wrote to memory of 2668	1240	d97cfbdcbd68d0080286dde7cb1906e84c954d5471f08ba98608c5f3b6af3f2d.exe	37
PID 1240 wrote to memory of 1112	1240	d97cfbdcbd68d0080286dde7cb1906e84c954d5471f08ba98608c5f3b6af3f2d.exe	39
PID 1240 wrote to memory of 1112	1240	d97cfbdcbd68d0080286dde7cb1906e84c954d5471f08ba98608c5f3b6af3f2d.exe	39
PID 1240 wrote to memory of 1112	1240	d97cfbdcbd68d0080286dde7cb1906e84c954d5471f08ba98608c5f3b6af3f2d.exe	39
PID 1240 wrote to memory of 2024	1240	d97cfbdcbd68d0080286dde7cb1906e84c954d5471f08ba98608c5f3b6af3f2d.exe	41
PID 1240 wrote to memory of 2024	1240	d97cfbdcbd68d0080286dde7cb1906e84c954d5471f08ba98608c5f3b6af3f2d.exe	41
PID 1240 wrote to memory of 2024	1240	d97cfbdcbd68d0080286dde7cb1906e84c954d5471f08ba98608c5f3b6af3f2d.exe	41
PID 1240 wrote to memory of 2052	1240	d97cfbdcbd68d0080286dde7cb1906e84c954d5471f08ba98608c5f3b6af3f2d.exe	43
PID 1240 wrote to memory of 2052	1240	d97cfbdcbd68d0080286dde7cb1906e84c954d5471f08ba98608c5f3b6af3f2d.exe	43
PID 1240 wrote to memory of 2052	1240	d97cfbdcbd68d0080286dde7cb1906e84c954d5471f08ba98608c5f3b6af3f2d.exe	43
PID 1240 wrote to memory of 1580	1240	d97cfbdcbd68d0080286dde7cb1906e84c954d5471f08ba98608c5f3b6af3f2d.exe	45
PID 1240 wrote to memory of 1580	1240	d97cfbdcbd68d0080286dde7cb1906e84c954d5471f08ba98608c5f3b6af3f2d.exe	45
PID 1240 wrote to memory of 1580	1240	d97cfbdcbd68d0080286dde7cb1906e84c954d5471f08ba98608c5f3b6af3f2d.exe	45
PID 1240 wrote to memory of 2008	1240	d97cfbdcbd68d0080286dde7cb1906e84c954d5471f08ba98608c5f3b6af3f2d.exe	47
PID 1240 wrote to memory of 2008	1240	d97cfbdcbd68d0080286dde7cb1906e84c954d5471f08ba98608c5f3b6af3f2d.exe	47
PID 1240 wrote to memory of 2008	1240	d97cfbdcbd68d0080286dde7cb1906e84c954d5471f08ba98608c5f3b6af3f2d.exe	47
PID 1240 wrote to memory of 1780	1240	d97cfbdcbd68d0080286dde7cb1906e84c954d5471f08ba98608c5f3b6af3f2d.exe	49
PID 1240 wrote to memory of 1780	1240	d97cfbdcbd68d0080286dde7cb1906e84c954d5471f08ba98608c5f3b6af3f2d.exe	49
PID 1240 wrote to memory of 1780	1240	d97cfbdcbd68d0080286dde7cb1906e84c954d5471f08ba98608c5f3b6af3f2d.exe	49
PID 1240 wrote to memory of 2852	1240	d97cfbdcbd68d0080286dde7cb1906e84c954d5471f08ba98608c5f3b6af3f2d.exe	51
PID 1240 wrote to memory of 2852	1240	d97cfbdcbd68d0080286dde7cb1906e84c954d5471f08ba98608c5f3b6af3f2d.exe	51
PID 1240 wrote to memory of 2852	1240	d97cfbdcbd68d0080286dde7cb1906e84c954d5471f08ba98608c5f3b6af3f2d.exe	51
PID 1240 wrote to memory of 3040	1240	d97cfbdcbd68d0080286dde7cb1906e84c954d5471f08ba98608c5f3b6af3f2d.exe	53
PID 1240 wrote to memory of 3040	1240	d97cfbdcbd68d0080286dde7cb1906e84c954d5471f08ba98608c5f3b6af3f2d.exe	53
PID 1240 wrote to memory of 3040	1240	d97cfbdcbd68d0080286dde7cb1906e84c954d5471f08ba98608c5f3b6af3f2d.exe	53
PID 3040 wrote to memory of 1064	3040	cmd.exe	55
PID 3040 wrote to memory of 1064	3040	cmd.exe	55
PID 3040 wrote to memory of 1064	3040	cmd.exe	55

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
2248	attrib.exe

C:\Users\Admin\AppData\Local\Temp\d97cfbdcbd68d0080286dde7cb1906e84c954d5471f08ba98608c5f3b6af3f2d.exe
"C:\Users\Admin\AppData\Local\Temp\d97cfbdcbd68d0080286dde7cb1906e84c954d5471f08ba98608c5f3b6af3f2d.exe"
1⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1240
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2404
- C:\Windows\system32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\d97cfbdcbd68d0080286dde7cb1906e84c954d5471f08ba98608c5f3b6af3f2d.exe"
  2⤵
  - Views/modifies file attributes
  PID:2248
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\d97cfbdcbd68d0080286dde7cb1906e84c954d5471f08ba98608c5f3b6af3f2d.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1992
- 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:2668
- 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:1112
- 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:2024
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2052
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:1580
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:2008
- 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:1780
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:2852
- C:\Windows\system32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\d97cfbdcbd68d0080286dde7cb1906e84c954d5471f08ba98608c5f3b6af3f2d.exe" && pause
  2⤵
  - Deletes itself
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:3040
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:1064

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\ZDWN7K6I8C5514DBSVXQ.temp

Filesize
7KB

MD5
90911b5b06410e5f87cc32562e7a33fa

SHA1
8dfd3dce31ccc5fd4930607a264f2bef8e08b6c4

SHA256
4c5f6b6aeb9b846ab6f71511289b3ff20219b2b7329f06434643292eb5e9090e

SHA512
2005cd5e85942bb9e57246cb6363dbcc6aa12d5aa3a780c3e1c0655fcc6a6c8e7eebfa3870d3db484cc17dacd84d8e22b8fceada5911d1cb52139fd6952c680e

Download Submit
memory/1240-0-0x000007FEF5F53000-0x000007FEF5F54000-memory.dmp

Filesize
4KB

Download
memory/1240-1-0x0000000000A50000-0x0000000000A90000-memory.dmp

Filesize
256KB

Download
memory/1240-2-0x000007FEF5F50000-0x000007FEF693C000-memory.dmp

Filesize
9.9MB

Download
memory/1240-49-0x000007FEF5F50000-0x000007FEF693C000-memory.dmp

Filesize
9.9MB

Download
memory/1780-44-0x000000001B630000-0x000000001B912000-memory.dmp

Filesize
2.9MB

Download
memory/1780-45-0x00000000027E0000-0x00000000027E8000-memory.dmp

Filesize
32KB

Download
memory/1992-7-0x000000001B710000-0x000000001B9F2000-memory.dmp

Filesize
2.9MB

Download
memory/1992-8-0x0000000001EE0000-0x0000000001EE8000-memory.dmp

Filesize
32KB

Download
memory/2668-14-0x000000001B590000-0x000000001B872000-memory.dmp

Filesize
2.9MB

Download
memory/2668-15-0x0000000001EF0000-0x0000000001EF8000-memory.dmp

Filesize
32KB

Download