umbral | f867a240eab1d2993a2a0917e1ba63d9156e66ad637d0a500afc0347c5172075

Analysis

max time kernel
122s
max time network
123s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
10-07-2024 07:30

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General

Target

f867a240eab1d2993a2a0917e1ba63d9156e66ad637d0a500afc0347c5172075.exe
Size

232KB
MD5

d534b7ce43629032d053b5c88122e761
SHA1

161b697296b3225d2e0116729e3f493660a48196
SHA256

f867a240eab1d2993a2a0917e1ba63d9156e66ad637d0a500afc0347c5172075
SHA512

ffbbe9f7f4890c4f9b17142a81a5b724a15373a6fab89bf46a2e28068c89b96cec0cebaf4248ff10b21c826f003c6090aeea7fc80f42137961f3efb7cd708f15
SSDEEP

6144:xloZM+rIkd8g+EtXHkv/iD4OnhUsyVtGdTOMdRYQMWb8e1mLeqi:DoZtL+EP8OnhUsyVtGdTOMdRYQHdP

Score

10^/10

umbral execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/2644-1-0x0000000000D20000-0x0000000000D60000-memory.dmp	family_umbral

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

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

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

execution

PowerShell

T1059.001

pid	Process
2596	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	f867a240eab1d2993a2a0917e1ba63d9156e66ad637d0a500afc0347c5172075.exe

Deletes itself 1 IoCs

pid	Process
2212	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
7	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
4	ip-api.com

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
2168	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
1124	PING.EXE

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2644	f867a240eab1d2993a2a0917e1ba63d9156e66ad637d0a500afc0347c5172075.exe
2596	powershell.exe
2320	powershell.exe
1992	powershell.exe
2620	powershell.exe
1780	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2644	f867a240eab1d2993a2a0917e1ba63d9156e66ad637d0a500afc0347c5172075.exe
Token: SeIncreaseQuotaPrivilege	2768	wmic.exe
Token: SeSecurityPrivilege	2768	wmic.exe
Token: SeTakeOwnershipPrivilege	2768	wmic.exe
Token: SeLoadDriverPrivilege	2768	wmic.exe
Token: SeSystemProfilePrivilege	2768	wmic.exe
Token: SeSystemtimePrivilege	2768	wmic.exe
Token: SeProfSingleProcessPrivilege	2768	wmic.exe
Token: SeIncBasePriorityPrivilege	2768	wmic.exe
Token: SeCreatePagefilePrivilege	2768	wmic.exe
Token: SeBackupPrivilege	2768	wmic.exe
Token: SeRestorePrivilege	2768	wmic.exe
Token: SeShutdownPrivilege	2768	wmic.exe
Token: SeDebugPrivilege	2768	wmic.exe
Token: SeSystemEnvironmentPrivilege	2768	wmic.exe
Token: SeRemoteShutdownPrivilege	2768	wmic.exe
Token: SeUndockPrivilege	2768	wmic.exe
Token: SeManageVolumePrivilege	2768	wmic.exe
Token: 33	2768	wmic.exe
Token: 34	2768	wmic.exe
Token: 35	2768	wmic.exe
Token: SeIncreaseQuotaPrivilege	2768	wmic.exe
Token: SeSecurityPrivilege	2768	wmic.exe
Token: SeTakeOwnershipPrivilege	2768	wmic.exe
Token: SeLoadDriverPrivilege	2768	wmic.exe
Token: SeSystemProfilePrivilege	2768	wmic.exe
Token: SeSystemtimePrivilege	2768	wmic.exe
Token: SeProfSingleProcessPrivilege	2768	wmic.exe
Token: SeIncBasePriorityPrivilege	2768	wmic.exe
Token: SeCreatePagefilePrivilege	2768	wmic.exe
Token: SeBackupPrivilege	2768	wmic.exe
Token: SeRestorePrivilege	2768	wmic.exe
Token: SeShutdownPrivilege	2768	wmic.exe
Token: SeDebugPrivilege	2768	wmic.exe
Token: SeSystemEnvironmentPrivilege	2768	wmic.exe
Token: SeRemoteShutdownPrivilege	2768	wmic.exe
Token: SeUndockPrivilege	2768	wmic.exe
Token: SeManageVolumePrivilege	2768	wmic.exe
Token: 33	2768	wmic.exe
Token: 34	2768	wmic.exe
Token: 35	2768	wmic.exe
Token: SeDebugPrivilege	2596	powershell.exe
Token: SeDebugPrivilege	2320	powershell.exe
Token: SeDebugPrivilege	1992	powershell.exe
Token: SeDebugPrivilege	2620	powershell.exe
Token: SeIncreaseQuotaPrivilege	372	wmic.exe
Token: SeSecurityPrivilege	372	wmic.exe
Token: SeTakeOwnershipPrivilege	372	wmic.exe
Token: SeLoadDriverPrivilege	372	wmic.exe
Token: SeSystemProfilePrivilege	372	wmic.exe
Token: SeSystemtimePrivilege	372	wmic.exe
Token: SeProfSingleProcessPrivilege	372	wmic.exe
Token: SeIncBasePriorityPrivilege	372	wmic.exe
Token: SeCreatePagefilePrivilege	372	wmic.exe
Token: SeBackupPrivilege	372	wmic.exe
Token: SeRestorePrivilege	372	wmic.exe
Token: SeShutdownPrivilege	372	wmic.exe
Token: SeDebugPrivilege	372	wmic.exe
Token: SeSystemEnvironmentPrivilege	372	wmic.exe
Token: SeRemoteShutdownPrivilege	372	wmic.exe
Token: SeUndockPrivilege	372	wmic.exe
Token: SeManageVolumePrivilege	372	wmic.exe
Token: 33	372	wmic.exe
Token: 34	372	wmic.exe

Suspicious use of WriteProcessMemory 39 IoCs

description	pid	Process	procid_target
PID 2644 wrote to memory of 2768	2644	f867a240eab1d2993a2a0917e1ba63d9156e66ad637d0a500afc0347c5172075.exe	30
PID 2644 wrote to memory of 2768	2644	f867a240eab1d2993a2a0917e1ba63d9156e66ad637d0a500afc0347c5172075.exe	30
PID 2644 wrote to memory of 2768	2644	f867a240eab1d2993a2a0917e1ba63d9156e66ad637d0a500afc0347c5172075.exe	30
PID 2644 wrote to memory of 2588	2644	f867a240eab1d2993a2a0917e1ba63d9156e66ad637d0a500afc0347c5172075.exe	33
PID 2644 wrote to memory of 2588	2644	f867a240eab1d2993a2a0917e1ba63d9156e66ad637d0a500afc0347c5172075.exe	33
PID 2644 wrote to memory of 2588	2644	f867a240eab1d2993a2a0917e1ba63d9156e66ad637d0a500afc0347c5172075.exe	33
PID 2644 wrote to memory of 2596	2644	f867a240eab1d2993a2a0917e1ba63d9156e66ad637d0a500afc0347c5172075.exe	35
PID 2644 wrote to memory of 2596	2644	f867a240eab1d2993a2a0917e1ba63d9156e66ad637d0a500afc0347c5172075.exe	35
PID 2644 wrote to memory of 2596	2644	f867a240eab1d2993a2a0917e1ba63d9156e66ad637d0a500afc0347c5172075.exe	35
PID 2644 wrote to memory of 2320	2644	f867a240eab1d2993a2a0917e1ba63d9156e66ad637d0a500afc0347c5172075.exe	37
PID 2644 wrote to memory of 2320	2644	f867a240eab1d2993a2a0917e1ba63d9156e66ad637d0a500afc0347c5172075.exe	37
PID 2644 wrote to memory of 2320	2644	f867a240eab1d2993a2a0917e1ba63d9156e66ad637d0a500afc0347c5172075.exe	37
PID 2644 wrote to memory of 1992	2644	f867a240eab1d2993a2a0917e1ba63d9156e66ad637d0a500afc0347c5172075.exe	39
PID 2644 wrote to memory of 1992	2644	f867a240eab1d2993a2a0917e1ba63d9156e66ad637d0a500afc0347c5172075.exe	39
PID 2644 wrote to memory of 1992	2644	f867a240eab1d2993a2a0917e1ba63d9156e66ad637d0a500afc0347c5172075.exe	39
PID 2644 wrote to memory of 2620	2644	f867a240eab1d2993a2a0917e1ba63d9156e66ad637d0a500afc0347c5172075.exe	41
PID 2644 wrote to memory of 2620	2644	f867a240eab1d2993a2a0917e1ba63d9156e66ad637d0a500afc0347c5172075.exe	41
PID 2644 wrote to memory of 2620	2644	f867a240eab1d2993a2a0917e1ba63d9156e66ad637d0a500afc0347c5172075.exe	41
PID 2644 wrote to memory of 372	2644	f867a240eab1d2993a2a0917e1ba63d9156e66ad637d0a500afc0347c5172075.exe	43
PID 2644 wrote to memory of 372	2644	f867a240eab1d2993a2a0917e1ba63d9156e66ad637d0a500afc0347c5172075.exe	43
PID 2644 wrote to memory of 372	2644	f867a240eab1d2993a2a0917e1ba63d9156e66ad637d0a500afc0347c5172075.exe	43
PID 2644 wrote to memory of 2172	2644	f867a240eab1d2993a2a0917e1ba63d9156e66ad637d0a500afc0347c5172075.exe	45
PID 2644 wrote to memory of 2172	2644	f867a240eab1d2993a2a0917e1ba63d9156e66ad637d0a500afc0347c5172075.exe	45
PID 2644 wrote to memory of 2172	2644	f867a240eab1d2993a2a0917e1ba63d9156e66ad637d0a500afc0347c5172075.exe	45
PID 2644 wrote to memory of 1476	2644	f867a240eab1d2993a2a0917e1ba63d9156e66ad637d0a500afc0347c5172075.exe	47
PID 2644 wrote to memory of 1476	2644	f867a240eab1d2993a2a0917e1ba63d9156e66ad637d0a500afc0347c5172075.exe	47
PID 2644 wrote to memory of 1476	2644	f867a240eab1d2993a2a0917e1ba63d9156e66ad637d0a500afc0347c5172075.exe	47
PID 2644 wrote to memory of 1780	2644	f867a240eab1d2993a2a0917e1ba63d9156e66ad637d0a500afc0347c5172075.exe	49
PID 2644 wrote to memory of 1780	2644	f867a240eab1d2993a2a0917e1ba63d9156e66ad637d0a500afc0347c5172075.exe	49
PID 2644 wrote to memory of 1780	2644	f867a240eab1d2993a2a0917e1ba63d9156e66ad637d0a500afc0347c5172075.exe	49
PID 2644 wrote to memory of 2168	2644	f867a240eab1d2993a2a0917e1ba63d9156e66ad637d0a500afc0347c5172075.exe	51
PID 2644 wrote to memory of 2168	2644	f867a240eab1d2993a2a0917e1ba63d9156e66ad637d0a500afc0347c5172075.exe	51
PID 2644 wrote to memory of 2168	2644	f867a240eab1d2993a2a0917e1ba63d9156e66ad637d0a500afc0347c5172075.exe	51
PID 2644 wrote to memory of 2212	2644	f867a240eab1d2993a2a0917e1ba63d9156e66ad637d0a500afc0347c5172075.exe	53
PID 2644 wrote to memory of 2212	2644	f867a240eab1d2993a2a0917e1ba63d9156e66ad637d0a500afc0347c5172075.exe	53
PID 2644 wrote to memory of 2212	2644	f867a240eab1d2993a2a0917e1ba63d9156e66ad637d0a500afc0347c5172075.exe	53
PID 2212 wrote to memory of 1124	2212	cmd.exe	55
PID 2212 wrote to memory of 1124	2212	cmd.exe	55
PID 2212 wrote to memory of 1124	2212	cmd.exe	55

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
2588	attrib.exe

C:\Users\Admin\AppData\Local\Temp\f867a240eab1d2993a2a0917e1ba63d9156e66ad637d0a500afc0347c5172075.exe
"C:\Users\Admin\AppData\Local\Temp\f867a240eab1d2993a2a0917e1ba63d9156e66ad637d0a500afc0347c5172075.exe"
1⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2644
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2768
- C:\Windows\system32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\f867a240eab1d2993a2a0917e1ba63d9156e66ad637d0a500afc0347c5172075.exe"
  2⤵
  - Views/modifies file attributes
  PID:2588
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\f867a240eab1d2993a2a0917e1ba63d9156e66ad637d0a500afc0347c5172075.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2596
- 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⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2320
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Get-ItemPropertyValue -Path HKCU:SOFTWARE\Roblox\RobloxStudioBrowser\roblox.com -Name .ROBLOSECURITY
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1992
- 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:2620
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:372
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:2172
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:1476
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Get-ItemPropertyValue -Path 'HKLM:System\CurrentControlSet\Control\Session Manager\Environment' -Name PROCESSOR_IDENTIFIER
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  PID:1780
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:2168
- C:\Windows\system32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\f867a240eab1d2993a2a0917e1ba63d9156e66ad637d0a500afc0347c5172075.exe" && pause
  2⤵
  - Deletes itself
  - Suspicious use of WriteProcessMemory
  PID:2212
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - Runs ping.exe
    PID:1124

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

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Remote System Discovery

T1018

System Information Discovery

T1082

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
bbb55190a7550a6997aa24ecbf7b52e1

SHA1
e419db141d1cc9ac41e4aa4894b1cff6622cadd1

SHA256
3ce213e3e7b21b42e377a91b70718a14e6ac30918d84d5f3775e270675cf246e

SHA512
74b0b40dbae8f7a9c84412855013eb49f5d2b531853be2b7a3c7f3755ecabb39c54c54b171d9edcd00ea1d8df2a1ee9ddda96209b6f7632a0108e38fd16916b1

Download Submit
memory/1780-43-0x0000000002720000-0x0000000002728000-memory.dmp

Filesize
32KB

Download
memory/2320-14-0x000000001B650000-0x000000001B932000-memory.dmp

Filesize
2.9MB

Download
memory/2320-15-0x0000000001FD0000-0x0000000001FD8000-memory.dmp

Filesize
32KB

Download
memory/2596-7-0x000000001B560000-0x000000001B842000-memory.dmp

Filesize
2.9MB

Download
memory/2596-8-0x00000000029F0000-0x00000000029F8000-memory.dmp

Filesize
32KB

Download
memory/2644-0-0x000007FEF6163000-0x000007FEF6164000-memory.dmp

Filesize
4KB

Download
memory/2644-1-0x0000000000D20000-0x0000000000D60000-memory.dmp

Filesize
256KB

Download
memory/2644-2-0x000007FEF6160000-0x000007FEF6B4C000-memory.dmp

Filesize
9.9MB

Download
memory/2644-47-0x000007FEF6160000-0x000007FEF6B4C000-memory.dmp

Filesize
9.9MB

Download