umbral | f40fdb9a6d6ce049437de3aabf212a6ce2eaaaf48bd478d691164c5ea32dc22d

Analysis

max time kernel
118s
max time network
119s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
16-01-2025 03:45

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General

Target

f40fdb9a6d6ce049437de3aabf212a6ce2eaaaf48bd478d691164c5ea32dc22dN.exe
Size

231KB
MD5

6b1466bbf3d206c9a9851a6b5626dc70
SHA1

d9039fe892d5f6da31462eb577f9377f359031d2
SHA256

f40fdb9a6d6ce049437de3aabf212a6ce2eaaaf48bd478d691164c5ea32dc22d
SHA512

77777aff4d363334409d8b0b47c2006aff5c904641892ecba3038a0be755e3ac70c63d413e251baf185e7d4d47f38fd1ff2f5e75cbffbc44de22c3abbf2f4cef
SSDEEP

6144:xloZMffsXtioRkts/cnnK6cMltMMjw2xpaBPyAxVkElb8e1mhzLHi:DoZdtlRk83MltMMjw2xpaBPyAxVkAMW

Score

10^/10

umbral execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/2100-1-0x0000000000A90000-0x0000000000AD0000-memory.dmp	family_umbral

Umbral
Umbral stealer is an opensource moduler stealer written in C#.
stealer umbral
Umbral family
umbral

Command and Scripting Interpreter: PowerShell 1 TTPs 4 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
2796	powershell.exe
2900	powershell.exe
2656	powershell.exe
1536	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	f40fdb9a6d6ce049437de3aabf212a6ce2eaaaf48bd478d691164c5ea32dc22dN.exe

Reads user/profile data of web browsers 3 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

Credentials from Web Browsers
T1555.003

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

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
2940	wmic.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2100	f40fdb9a6d6ce049437de3aabf212a6ce2eaaaf48bd478d691164c5ea32dc22dN.exe
2796	powershell.exe
2900	powershell.exe
2656	powershell.exe
2464	powershell.exe
1536	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2100	f40fdb9a6d6ce049437de3aabf212a6ce2eaaaf48bd478d691164c5ea32dc22dN.exe
Token: SeIncreaseQuotaPrivilege	3016	wmic.exe
Token: SeSecurityPrivilege	3016	wmic.exe
Token: SeTakeOwnershipPrivilege	3016	wmic.exe
Token: SeLoadDriverPrivilege	3016	wmic.exe
Token: SeSystemProfilePrivilege	3016	wmic.exe
Token: SeSystemtimePrivilege	3016	wmic.exe
Token: SeProfSingleProcessPrivilege	3016	wmic.exe
Token: SeIncBasePriorityPrivilege	3016	wmic.exe
Token: SeCreatePagefilePrivilege	3016	wmic.exe
Token: SeBackupPrivilege	3016	wmic.exe
Token: SeRestorePrivilege	3016	wmic.exe
Token: SeShutdownPrivilege	3016	wmic.exe
Token: SeDebugPrivilege	3016	wmic.exe
Token: SeSystemEnvironmentPrivilege	3016	wmic.exe
Token: SeRemoteShutdownPrivilege	3016	wmic.exe
Token: SeUndockPrivilege	3016	wmic.exe
Token: SeManageVolumePrivilege	3016	wmic.exe
Token: 33	3016	wmic.exe
Token: 34	3016	wmic.exe
Token: 35	3016	wmic.exe
Token: SeIncreaseQuotaPrivilege	3016	wmic.exe
Token: SeSecurityPrivilege	3016	wmic.exe
Token: SeTakeOwnershipPrivilege	3016	wmic.exe
Token: SeLoadDriverPrivilege	3016	wmic.exe
Token: SeSystemProfilePrivilege	3016	wmic.exe
Token: SeSystemtimePrivilege	3016	wmic.exe
Token: SeProfSingleProcessPrivilege	3016	wmic.exe
Token: SeIncBasePriorityPrivilege	3016	wmic.exe
Token: SeCreatePagefilePrivilege	3016	wmic.exe
Token: SeBackupPrivilege	3016	wmic.exe
Token: SeRestorePrivilege	3016	wmic.exe
Token: SeShutdownPrivilege	3016	wmic.exe
Token: SeDebugPrivilege	3016	wmic.exe
Token: SeSystemEnvironmentPrivilege	3016	wmic.exe
Token: SeRemoteShutdownPrivilege	3016	wmic.exe
Token: SeUndockPrivilege	3016	wmic.exe
Token: SeManageVolumePrivilege	3016	wmic.exe
Token: 33	3016	wmic.exe
Token: 34	3016	wmic.exe
Token: 35	3016	wmic.exe
Token: SeDebugPrivilege	2796	powershell.exe
Token: SeDebugPrivilege	2900	powershell.exe
Token: SeDebugPrivilege	2656	powershell.exe
Token: SeDebugPrivilege	2464	powershell.exe
Token: SeIncreaseQuotaPrivilege	2976	wmic.exe
Token: SeSecurityPrivilege	2976	wmic.exe
Token: SeTakeOwnershipPrivilege	2976	wmic.exe
Token: SeLoadDriverPrivilege	2976	wmic.exe
Token: SeSystemProfilePrivilege	2976	wmic.exe
Token: SeSystemtimePrivilege	2976	wmic.exe
Token: SeProfSingleProcessPrivilege	2976	wmic.exe
Token: SeIncBasePriorityPrivilege	2976	wmic.exe
Token: SeCreatePagefilePrivilege	2976	wmic.exe
Token: SeBackupPrivilege	2976	wmic.exe
Token: SeRestorePrivilege	2976	wmic.exe
Token: SeShutdownPrivilege	2976	wmic.exe
Token: SeDebugPrivilege	2976	wmic.exe
Token: SeSystemEnvironmentPrivilege	2976	wmic.exe
Token: SeRemoteShutdownPrivilege	2976	wmic.exe
Token: SeUndockPrivilege	2976	wmic.exe
Token: SeManageVolumePrivilege	2976	wmic.exe
Token: 33	2976	wmic.exe
Token: 34	2976	wmic.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2100 wrote to memory of 3016	2100	f40fdb9a6d6ce049437de3aabf212a6ce2eaaaf48bd478d691164c5ea32dc22dN.exe	30
PID 2100 wrote to memory of 3016	2100	f40fdb9a6d6ce049437de3aabf212a6ce2eaaaf48bd478d691164c5ea32dc22dN.exe	30
PID 2100 wrote to memory of 3016	2100	f40fdb9a6d6ce049437de3aabf212a6ce2eaaaf48bd478d691164c5ea32dc22dN.exe	30
PID 2100 wrote to memory of 2796	2100	f40fdb9a6d6ce049437de3aabf212a6ce2eaaaf48bd478d691164c5ea32dc22dN.exe	33
PID 2100 wrote to memory of 2796	2100	f40fdb9a6d6ce049437de3aabf212a6ce2eaaaf48bd478d691164c5ea32dc22dN.exe	33
PID 2100 wrote to memory of 2796	2100	f40fdb9a6d6ce049437de3aabf212a6ce2eaaaf48bd478d691164c5ea32dc22dN.exe	33
PID 2100 wrote to memory of 2900	2100	f40fdb9a6d6ce049437de3aabf212a6ce2eaaaf48bd478d691164c5ea32dc22dN.exe	35
PID 2100 wrote to memory of 2900	2100	f40fdb9a6d6ce049437de3aabf212a6ce2eaaaf48bd478d691164c5ea32dc22dN.exe	35
PID 2100 wrote to memory of 2900	2100	f40fdb9a6d6ce049437de3aabf212a6ce2eaaaf48bd478d691164c5ea32dc22dN.exe	35
PID 2100 wrote to memory of 2656	2100	f40fdb9a6d6ce049437de3aabf212a6ce2eaaaf48bd478d691164c5ea32dc22dN.exe	37
PID 2100 wrote to memory of 2656	2100	f40fdb9a6d6ce049437de3aabf212a6ce2eaaaf48bd478d691164c5ea32dc22dN.exe	37
PID 2100 wrote to memory of 2656	2100	f40fdb9a6d6ce049437de3aabf212a6ce2eaaaf48bd478d691164c5ea32dc22dN.exe	37
PID 2100 wrote to memory of 2464	2100	f40fdb9a6d6ce049437de3aabf212a6ce2eaaaf48bd478d691164c5ea32dc22dN.exe	39
PID 2100 wrote to memory of 2464	2100	f40fdb9a6d6ce049437de3aabf212a6ce2eaaaf48bd478d691164c5ea32dc22dN.exe	39
PID 2100 wrote to memory of 2464	2100	f40fdb9a6d6ce049437de3aabf212a6ce2eaaaf48bd478d691164c5ea32dc22dN.exe	39
PID 2100 wrote to memory of 2976	2100	f40fdb9a6d6ce049437de3aabf212a6ce2eaaaf48bd478d691164c5ea32dc22dN.exe	41
PID 2100 wrote to memory of 2976	2100	f40fdb9a6d6ce049437de3aabf212a6ce2eaaaf48bd478d691164c5ea32dc22dN.exe	41
PID 2100 wrote to memory of 2976	2100	f40fdb9a6d6ce049437de3aabf212a6ce2eaaaf48bd478d691164c5ea32dc22dN.exe	41
PID 2100 wrote to memory of 2128	2100	f40fdb9a6d6ce049437de3aabf212a6ce2eaaaf48bd478d691164c5ea32dc22dN.exe	44
PID 2100 wrote to memory of 2128	2100	f40fdb9a6d6ce049437de3aabf212a6ce2eaaaf48bd478d691164c5ea32dc22dN.exe	44
PID 2100 wrote to memory of 2128	2100	f40fdb9a6d6ce049437de3aabf212a6ce2eaaaf48bd478d691164c5ea32dc22dN.exe	44
PID 2100 wrote to memory of 1640	2100	f40fdb9a6d6ce049437de3aabf212a6ce2eaaaf48bd478d691164c5ea32dc22dN.exe	46
PID 2100 wrote to memory of 1640	2100	f40fdb9a6d6ce049437de3aabf212a6ce2eaaaf48bd478d691164c5ea32dc22dN.exe	46
PID 2100 wrote to memory of 1640	2100	f40fdb9a6d6ce049437de3aabf212a6ce2eaaaf48bd478d691164c5ea32dc22dN.exe	46
PID 2100 wrote to memory of 1536	2100	f40fdb9a6d6ce049437de3aabf212a6ce2eaaaf48bd478d691164c5ea32dc22dN.exe	48
PID 2100 wrote to memory of 1536	2100	f40fdb9a6d6ce049437de3aabf212a6ce2eaaaf48bd478d691164c5ea32dc22dN.exe	48
PID 2100 wrote to memory of 1536	2100	f40fdb9a6d6ce049437de3aabf212a6ce2eaaaf48bd478d691164c5ea32dc22dN.exe	48
PID 2100 wrote to memory of 2940	2100	f40fdb9a6d6ce049437de3aabf212a6ce2eaaaf48bd478d691164c5ea32dc22dN.exe	50
PID 2100 wrote to memory of 2940	2100	f40fdb9a6d6ce049437de3aabf212a6ce2eaaaf48bd478d691164c5ea32dc22dN.exe	50
PID 2100 wrote to memory of 2940	2100	f40fdb9a6d6ce049437de3aabf212a6ce2eaaaf48bd478d691164c5ea32dc22dN.exe	50

C:\Users\Admin\AppData\Local\Temp\f40fdb9a6d6ce049437de3aabf212a6ce2eaaaf48bd478d691164c5ea32dc22dN.exe
"C:\Users\Admin\AppData\Local\Temp\f40fdb9a6d6ce049437de3aabf212a6ce2eaaaf48bd478d691164c5ea32dc22dN.exe"
1⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2100
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:3016
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\f40fdb9a6d6ce049437de3aabf212a6ce2eaaaf48bd478d691164c5ea32dc22dN.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2796
- 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:2900
- 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:2656
- 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:2464
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2976
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:2128
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:1640
- 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:1536
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:2940

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

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

System Information Discovery

T1082

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
650ffa523273e05647c6faf97f33e46b

SHA1
0015c415215c4b1bd2a158dec51b958101c6c92f

SHA256
b0bb4cf5a6d0977cca7f3c7369c2c6b515b91432c2c975969820d9946b67c81b

SHA512
9da843815395e4acefd87109725d9608234526e9c4845987c3d25d82873bfbbe300f24e313074e558c409a11379454405f29b893acb7f34f1603e7f23f398a62

Download Submit
memory/1536-41-0x0000000001D90000-0x0000000001D98000-memory.dmp

Filesize
32KB

Download
memory/2100-0-0x000007FEF5EA3000-0x000007FEF5EA4000-memory.dmp

Filesize
4KB

Download
memory/2100-1-0x0000000000A90000-0x0000000000AD0000-memory.dmp

Filesize
256KB

Download
memory/2100-2-0x000007FEF5EA0000-0x000007FEF688C000-memory.dmp

Filesize
9.9MB

Download
memory/2100-45-0x000007FEF5EA0000-0x000007FEF688C000-memory.dmp

Filesize
9.9MB

Download
memory/2796-7-0x000000001B6A0000-0x000000001B982000-memory.dmp

Filesize
2.9MB

Download
memory/2796-8-0x0000000002250000-0x0000000002258000-memory.dmp

Filesize
32KB

Download
memory/2900-14-0x000000001B5A0000-0x000000001B882000-memory.dmp

Filesize
2.9MB

Download
memory/2900-15-0x0000000001E80000-0x0000000001E88000-memory.dmp

Filesize
32KB

Download