umbral | f867a240eab1d2993a2a0917e1ba63d9156e66ad637d0a500afc0347c5172075

Analysis

max time kernel
150s
max time network
158s
platform
windows10-2004_x64
resource
win10v2004-20240709-en
resource tags

arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
submitted
10/07/2024, 07:30

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General

Target
f867a240eab1d2993a2a0917e1ba63d9156e66ad637d0a500afc0347c5172075.exe
Size 232KB
Sample240710-jb58savamp
SHA256 f867a240eab1d2993a2a0917e1ba63d9156e66ad637d0a500afc0347c5172075
MD5 d534b7ce43629032d053b5c88122e761
SHA1 161b697296b3225d2e0116729e3f493660a48196
SHA512 ffbbe9f7f4890c4f9b17142a81a5b724a15373a6fab89bf46a2e28068c89b96cec0cebaf4248ff10b21c826f003c6090aeea7fc80f42137961f3efb7cd708f15
SSDEEP 6144:xloZM+rIkd8g+EtXHkv/iD4OnhUsyVtGdTOMdRYQMWb8e1mLeqi:DoZtL+EP8OnhUsyVtGdTOMdRYQHdP
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

umbral execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral2/memory/4804-0-0x000001BD85AD0000-0x000001BD85B10000-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
4208	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	f867a240eab1d2993a2a0917e1ba63d9156e66ad637d0a500afc0347c5172075.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
18	discord.com
19	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
5	ip-api.com

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
3076	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2808	PING.EXE

Suspicious behavior: EnumeratesProcesses 11 IoCs

pid	Process
4804	f867a240eab1d2993a2a0917e1ba63d9156e66ad637d0a500afc0347c5172075.exe
4208	powershell.exe
4208	powershell.exe
4832	powershell.exe
4832	powershell.exe
468	powershell.exe
468	powershell.exe
3244	powershell.exe
3244	powershell.exe
2368	powershell.exe
2368	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	4804	f867a240eab1d2993a2a0917e1ba63d9156e66ad637d0a500afc0347c5172075.exe
Token: SeIncreaseQuotaPrivilege	212	wmic.exe
Token: SeSecurityPrivilege	212	wmic.exe
Token: SeTakeOwnershipPrivilege	212	wmic.exe
Token: SeLoadDriverPrivilege	212	wmic.exe
Token: SeSystemProfilePrivilege	212	wmic.exe
Token: SeSystemtimePrivilege	212	wmic.exe
Token: SeProfSingleProcessPrivilege	212	wmic.exe
Token: SeIncBasePriorityPrivilege	212	wmic.exe
Token: SeCreatePagefilePrivilege	212	wmic.exe
Token: SeBackupPrivilege	212	wmic.exe
Token: SeRestorePrivilege	212	wmic.exe
Token: SeShutdownPrivilege	212	wmic.exe
Token: SeDebugPrivilege	212	wmic.exe
Token: SeSystemEnvironmentPrivilege	212	wmic.exe
Token: SeRemoteShutdownPrivilege	212	wmic.exe
Token: SeUndockPrivilege	212	wmic.exe
Token: SeManageVolumePrivilege	212	wmic.exe
Token: 33	212	wmic.exe
Token: 34	212	wmic.exe
Token: 35	212	wmic.exe
Token: 36	212	wmic.exe
Token: SeIncreaseQuotaPrivilege	212	wmic.exe
Token: SeSecurityPrivilege	212	wmic.exe
Token: SeTakeOwnershipPrivilege	212	wmic.exe
Token: SeLoadDriverPrivilege	212	wmic.exe
Token: SeSystemProfilePrivilege	212	wmic.exe
Token: SeSystemtimePrivilege	212	wmic.exe
Token: SeProfSingleProcessPrivilege	212	wmic.exe
Token: SeIncBasePriorityPrivilege	212	wmic.exe
Token: SeCreatePagefilePrivilege	212	wmic.exe
Token: SeBackupPrivilege	212	wmic.exe
Token: SeRestorePrivilege	212	wmic.exe
Token: SeShutdownPrivilege	212	wmic.exe
Token: SeDebugPrivilege	212	wmic.exe
Token: SeSystemEnvironmentPrivilege	212	wmic.exe
Token: SeRemoteShutdownPrivilege	212	wmic.exe
Token: SeUndockPrivilege	212	wmic.exe
Token: SeManageVolumePrivilege	212	wmic.exe
Token: 33	212	wmic.exe
Token: 34	212	wmic.exe
Token: 35	212	wmic.exe
Token: 36	212	wmic.exe
Token: SeDebugPrivilege	4208	powershell.exe
Token: SeDebugPrivilege	4832	powershell.exe
Token: SeDebugPrivilege	468	powershell.exe
Token: SeDebugPrivilege	3244	powershell.exe
Token: SeIncreaseQuotaPrivilege	1296	wmic.exe
Token: SeSecurityPrivilege	1296	wmic.exe
Token: SeTakeOwnershipPrivilege	1296	wmic.exe
Token: SeLoadDriverPrivilege	1296	wmic.exe
Token: SeSystemProfilePrivilege	1296	wmic.exe
Token: SeSystemtimePrivilege	1296	wmic.exe
Token: SeProfSingleProcessPrivilege	1296	wmic.exe
Token: SeIncBasePriorityPrivilege	1296	wmic.exe
Token: SeCreatePagefilePrivilege	1296	wmic.exe
Token: SeBackupPrivilege	1296	wmic.exe
Token: SeRestorePrivilege	1296	wmic.exe
Token: SeShutdownPrivilege	1296	wmic.exe
Token: SeDebugPrivilege	1296	wmic.exe
Token: SeSystemEnvironmentPrivilege	1296	wmic.exe
Token: SeRemoteShutdownPrivilege	1296	wmic.exe
Token: SeUndockPrivilege	1296	wmic.exe
Token: SeManageVolumePrivilege	1296	wmic.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 4804 wrote to memory of 212	4804	f867a240eab1d2993a2a0917e1ba63d9156e66ad637d0a500afc0347c5172075.exe	84
PID 4804 wrote to memory of 212	4804	f867a240eab1d2993a2a0917e1ba63d9156e66ad637d0a500afc0347c5172075.exe	84
PID 4804 wrote to memory of 2892	4804	f867a240eab1d2993a2a0917e1ba63d9156e66ad637d0a500afc0347c5172075.exe	87
PID 4804 wrote to memory of 2892	4804	f867a240eab1d2993a2a0917e1ba63d9156e66ad637d0a500afc0347c5172075.exe	87
PID 4804 wrote to memory of 4208	4804	f867a240eab1d2993a2a0917e1ba63d9156e66ad637d0a500afc0347c5172075.exe	89
PID 4804 wrote to memory of 4208	4804	f867a240eab1d2993a2a0917e1ba63d9156e66ad637d0a500afc0347c5172075.exe	89
PID 4804 wrote to memory of 4832	4804	f867a240eab1d2993a2a0917e1ba63d9156e66ad637d0a500afc0347c5172075.exe	91
PID 4804 wrote to memory of 4832	4804	f867a240eab1d2993a2a0917e1ba63d9156e66ad637d0a500afc0347c5172075.exe	91
PID 4804 wrote to memory of 468	4804	f867a240eab1d2993a2a0917e1ba63d9156e66ad637d0a500afc0347c5172075.exe	93
PID 4804 wrote to memory of 468	4804	f867a240eab1d2993a2a0917e1ba63d9156e66ad637d0a500afc0347c5172075.exe	93
PID 4804 wrote to memory of 3244	4804	f867a240eab1d2993a2a0917e1ba63d9156e66ad637d0a500afc0347c5172075.exe	95
PID 4804 wrote to memory of 3244	4804	f867a240eab1d2993a2a0917e1ba63d9156e66ad637d0a500afc0347c5172075.exe	95
PID 4804 wrote to memory of 1296	4804	f867a240eab1d2993a2a0917e1ba63d9156e66ad637d0a500afc0347c5172075.exe	97
PID 4804 wrote to memory of 1296	4804	f867a240eab1d2993a2a0917e1ba63d9156e66ad637d0a500afc0347c5172075.exe	97
PID 4804 wrote to memory of 1160	4804	f867a240eab1d2993a2a0917e1ba63d9156e66ad637d0a500afc0347c5172075.exe	99
PID 4804 wrote to memory of 1160	4804	f867a240eab1d2993a2a0917e1ba63d9156e66ad637d0a500afc0347c5172075.exe	99
PID 4804 wrote to memory of 4880	4804	f867a240eab1d2993a2a0917e1ba63d9156e66ad637d0a500afc0347c5172075.exe	101
PID 4804 wrote to memory of 4880	4804	f867a240eab1d2993a2a0917e1ba63d9156e66ad637d0a500afc0347c5172075.exe	101
PID 4804 wrote to memory of 2368	4804	f867a240eab1d2993a2a0917e1ba63d9156e66ad637d0a500afc0347c5172075.exe	103
PID 4804 wrote to memory of 2368	4804	f867a240eab1d2993a2a0917e1ba63d9156e66ad637d0a500afc0347c5172075.exe	103
PID 4804 wrote to memory of 3076	4804	f867a240eab1d2993a2a0917e1ba63d9156e66ad637d0a500afc0347c5172075.exe	105
PID 4804 wrote to memory of 3076	4804	f867a240eab1d2993a2a0917e1ba63d9156e66ad637d0a500afc0347c5172075.exe	105
PID 4804 wrote to memory of 3068	4804	f867a240eab1d2993a2a0917e1ba63d9156e66ad637d0a500afc0347c5172075.exe	107
PID 4804 wrote to memory of 3068	4804	f867a240eab1d2993a2a0917e1ba63d9156e66ad637d0a500afc0347c5172075.exe	107
PID 3068 wrote to memory of 2808	3068	cmd.exe	109
PID 3068 wrote to memory of 2808	3068	cmd.exe	109

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
2892	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:4804
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:212
- C:\Windows\SYSTEM32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\f867a240eab1d2993a2a0917e1ba63d9156e66ad637d0a500afc0347c5172075.exe"
  2⤵
  - Views/modifies file attributes
  PID:2892
- 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:4208
- 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:4832
- 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:468
- 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:3244
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1296
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:1160
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:4880
- 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:2368
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:3076
- C:\Windows\SYSTEM32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\f867a240eab1d2993a2a0917e1ba63d9156e66ad637d0a500afc0347c5172075.exe" && pause
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3068
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - Runs ping.exe
    PID:2808

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

StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 944B
SHA256 385da35673330e21ac02545220552fe301fe54dedefbdafc097ac4342a295233
MD5 2e907f77659a6601fcc408274894da2e
SHA1 9f5b72abef1cd7145bf37547cdb1b9254b4efe9d
SHA512 34fa0fff24f6550f55f828541aaefe5d75c86f8f0842d54b50065e9746f9662bb7209c74c9a9571540b9855bb3851f01db613190024e89b198d485bb5dc07721
MD5 SHA1 SHA512

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StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 948B
SHA256 bcce0d44e33747e4c39df9afbd0a4e98a47ded0188375e4dfdd94cafbb366e1f
MD5 0b8cb2e6dd5794b6a56a4bdbbd430fd7
SHA1 2b08e348c3489c6a35761af073018e3784c12074
SHA512 15ce3b588aa80899f69b0313c7e188d886bddbd09783ca732ac33f9ae8e4e017a72b6f98919f581383a4582732575e5faedb0dea87e01cf2b657424945fdf4d2
MD5 SHA1 SHA512

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StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 1KB
SHA256 cdf17b8532ebcebac3cfe23954a30aa32edd268d040da79c82687e4ccb044adc
MD5 548dd08570d121a65e82abb7171cae1c
SHA1 1a1b5084b3a78f3acd0d811cc79dbcac121217ab
SHA512 37b98b09178b51eec9599af90d027d2f1028202efc1633047e16e41f1a95610984af5620baac07db085ccfcb96942aafffad17aa1f44f63233e83869dc9f697b
MD5 SHA1 SHA512

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StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 1KB
SHA256 ea3b59172f1a33677f9cb3843fb4d6093b806d3a7cf2f3c6d4692f5421f656ce
MD5 45ad40f012b09e141955482368549640
SHA1 3f9cd15875c1e397c3b2b5592805577ae88a96cb
SHA512 3de08f8affca1c1450088f560776cf3d65146cadac43c06eb922c7b3cea436e519966cf38458303ffeb1a58c53f8952cffda6c34216fda7594e014b516e83b33
MD5 SHA1 SHA512

Submit Download

__PSScriptPolicyTest_4vu20v2g.uzj.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_4vu20v2g.uzj.ps1
Size 60B
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
MD5 SHA1 SHA512

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memory/4208-17-0x00007FFFA3AF0000-0x00007FFFA45B1000-memory.dmp

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memory/4208-10-0x00007FFFA3AF0000-0x00007FFFA45B1000-memory.dmp

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memory/4208-15-0x00007FFFA3AF0000-0x00007FFFA45B1000-memory.dmp

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memory/4208-3-0x00007FFFA3AF0000-0x00007FFFA45B1000-memory.dmp

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memory/4208-4-0x0000025B42C30000-0x0000025B42C52000-memory.dmp

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memory/4804-33-0x000001BD85FB0000-0x000001BD85FCE000-memory.dmp

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memory/4804-32-0x000001BDA02F0000-0x000001BDA0340000-memory.dmp

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memory/4804-31-0x000001BDA0270000-0x000001BDA02E6000-memory.dmp

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memory/4804-0-0x000001BD85AD0000-0x000001BD85B10000-memory.dmp

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memory/4804-2-0x00007FFFA3AF0000-0x00007FFFA45B1000-memory.dmp

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memory/4804-69-0x000001BDA00B0000-0x000001BDA00BA000-memory.dmp

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memory/4804-70-0x000001BDA01F0000-0x000001BDA0202000-memory.dmp

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memory/4804-1-0x00007FFFA3AF3000-0x00007FFFA3AF5000-memory.dmp

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memory/4804-88-0x00007FFFA3AF0000-0x00007FFFA45B1000-memory.dmp

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