umbral | bdbc624e4c40d85f3927d8dc261ee069982728471bde7a245504c3e903f1234e

Analysis

max time kernel
92s
max time network
125s
platform
windows10-2004_x64
resource
win10v2004-20240611-en
resource tags

arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system
submitted
12/06/2024, 03:42

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General

Target
bdbc624e4c40d85f3927d8dc261ee069982728471bde7a245504c3e903f1234e.exe
Size 234KB
Sample240612-d9a8eazeph
SHA256 bdbc624e4c40d85f3927d8dc261ee069982728471bde7a245504c3e903f1234e
MD5 65e7b5e4dd86e66cddd279dced3c31e5
SHA1 5b1836bd0519a866848d5867b42c9182066109bf
SHA512 ccb978eddac4b06c992db66db63e08964f94181fb068c76281d5c6e13e69b85723a89780110f3a5fb7570a79ca24dff8d78270f13f1faa419a98715c1fbd3f14
SSDEEP 6144:tloZM9rIkd8g+EtXHkv/iD4WeANbYMTiqL9Y0hnT+Y8e1mki:voZOL+EP8WeANbYMTiqL9Y0hFI
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

umbral execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral2/memory/4724-1-0x000001BFF9CC0000-0x000001BFF9D00000-memory.dmp	family_umbral

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

Detects executables attemping to enumerate video devices using WMI 1 IoCs

resource	yara_rule
behavioral2/memory/4724-1-0x000001BFF9CC0000-0x000001BFF9D00000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_WMI_EnumerateVideoDevice

Detects executables containing possible sandbox analysis VM names 1 IoCs

resource	yara_rule
behavioral2/memory/4724-1-0x000001BFF9CC0000-0x000001BFF9D00000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_SandboxComputerNames

Detects executables containing possible sandbox analysis VM usernames 1 IoCs

resource	yara_rule
behavioral2/memory/4724-1-0x000001BFF9CC0000-0x000001BFF9D00000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_SandboxUserNames

Detects executables containing possible sandbox system UUIDs 1 IoCs

resource	yara_rule
behavioral2/memory/4724-1-0x000001BFF9CC0000-0x000001BFF9D00000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_SandboxSystemUUIDs

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
1472	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	bdbc624e4c40d85f3927d8dc261ee069982728471bde7a245504c3e903f1234e.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
20	discord.com
22	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
18	ip-api.com

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
1452	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
216	PING.EXE

Suspicious behavior: EnumeratesProcesses 10 IoCs

pid	Process
1472	powershell.exe
1472	powershell.exe
4508	powershell.exe
4508	powershell.exe
2860	powershell.exe
2860	powershell.exe
2456	powershell.exe
2456	powershell.exe
1424	powershell.exe
1424	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	4724	bdbc624e4c40d85f3927d8dc261ee069982728471bde7a245504c3e903f1234e.exe
Token: SeDebugPrivilege	1472	powershell.exe
Token: SeDebugPrivilege	4508	powershell.exe
Token: SeDebugPrivilege	2860	powershell.exe
Token: SeDebugPrivilege	2456	powershell.exe
Token: SeIncreaseQuotaPrivilege	2796	wmic.exe
Token: SeSecurityPrivilege	2796	wmic.exe
Token: SeTakeOwnershipPrivilege	2796	wmic.exe
Token: SeLoadDriverPrivilege	2796	wmic.exe
Token: SeSystemProfilePrivilege	2796	wmic.exe
Token: SeSystemtimePrivilege	2796	wmic.exe
Token: SeProfSingleProcessPrivilege	2796	wmic.exe
Token: SeIncBasePriorityPrivilege	2796	wmic.exe
Token: SeCreatePagefilePrivilege	2796	wmic.exe
Token: SeBackupPrivilege	2796	wmic.exe
Token: SeRestorePrivilege	2796	wmic.exe
Token: SeShutdownPrivilege	2796	wmic.exe
Token: SeDebugPrivilege	2796	wmic.exe
Token: SeSystemEnvironmentPrivilege	2796	wmic.exe
Token: SeRemoteShutdownPrivilege	2796	wmic.exe
Token: SeUndockPrivilege	2796	wmic.exe
Token: SeManageVolumePrivilege	2796	wmic.exe
Token: 33	2796	wmic.exe
Token: 34	2796	wmic.exe
Token: 35	2796	wmic.exe
Token: 36	2796	wmic.exe
Token: SeIncreaseQuotaPrivilege	2796	wmic.exe
Token: SeSecurityPrivilege	2796	wmic.exe
Token: SeTakeOwnershipPrivilege	2796	wmic.exe
Token: SeLoadDriverPrivilege	2796	wmic.exe
Token: SeSystemProfilePrivilege	2796	wmic.exe
Token: SeSystemtimePrivilege	2796	wmic.exe
Token: SeProfSingleProcessPrivilege	2796	wmic.exe
Token: SeIncBasePriorityPrivilege	2796	wmic.exe
Token: SeCreatePagefilePrivilege	2796	wmic.exe
Token: SeBackupPrivilege	2796	wmic.exe
Token: SeRestorePrivilege	2796	wmic.exe
Token: SeShutdownPrivilege	2796	wmic.exe
Token: SeDebugPrivilege	2796	wmic.exe
Token: SeSystemEnvironmentPrivilege	2796	wmic.exe
Token: SeRemoteShutdownPrivilege	2796	wmic.exe
Token: SeUndockPrivilege	2796	wmic.exe
Token: SeManageVolumePrivilege	2796	wmic.exe
Token: 33	2796	wmic.exe
Token: 34	2796	wmic.exe
Token: 35	2796	wmic.exe
Token: 36	2796	wmic.exe
Token: SeIncreaseQuotaPrivilege	4184	wmic.exe
Token: SeSecurityPrivilege	4184	wmic.exe
Token: SeTakeOwnershipPrivilege	4184	wmic.exe
Token: SeLoadDriverPrivilege	4184	wmic.exe
Token: SeSystemProfilePrivilege	4184	wmic.exe
Token: SeSystemtimePrivilege	4184	wmic.exe
Token: SeProfSingleProcessPrivilege	4184	wmic.exe
Token: SeIncBasePriorityPrivilege	4184	wmic.exe
Token: SeCreatePagefilePrivilege	4184	wmic.exe
Token: SeBackupPrivilege	4184	wmic.exe
Token: SeRestorePrivilege	4184	wmic.exe
Token: SeShutdownPrivilege	4184	wmic.exe
Token: SeDebugPrivilege	4184	wmic.exe
Token: SeSystemEnvironmentPrivilege	4184	wmic.exe
Token: SeRemoteShutdownPrivilege	4184	wmic.exe
Token: SeUndockPrivilege	4184	wmic.exe
Token: SeManageVolumePrivilege	4184	wmic.exe

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 4724 wrote to memory of 3432	4724	bdbc624e4c40d85f3927d8dc261ee069982728471bde7a245504c3e903f1234e.exe	83
PID 4724 wrote to memory of 3432	4724	bdbc624e4c40d85f3927d8dc261ee069982728471bde7a245504c3e903f1234e.exe	83
PID 4724 wrote to memory of 1472	4724	bdbc624e4c40d85f3927d8dc261ee069982728471bde7a245504c3e903f1234e.exe	85
PID 4724 wrote to memory of 1472	4724	bdbc624e4c40d85f3927d8dc261ee069982728471bde7a245504c3e903f1234e.exe	85
PID 4724 wrote to memory of 4508	4724	bdbc624e4c40d85f3927d8dc261ee069982728471bde7a245504c3e903f1234e.exe	87
PID 4724 wrote to memory of 4508	4724	bdbc624e4c40d85f3927d8dc261ee069982728471bde7a245504c3e903f1234e.exe	87
PID 4724 wrote to memory of 2860	4724	bdbc624e4c40d85f3927d8dc261ee069982728471bde7a245504c3e903f1234e.exe	89
PID 4724 wrote to memory of 2860	4724	bdbc624e4c40d85f3927d8dc261ee069982728471bde7a245504c3e903f1234e.exe	89
PID 4724 wrote to memory of 2456	4724	bdbc624e4c40d85f3927d8dc261ee069982728471bde7a245504c3e903f1234e.exe	91
PID 4724 wrote to memory of 2456	4724	bdbc624e4c40d85f3927d8dc261ee069982728471bde7a245504c3e903f1234e.exe	91
PID 4724 wrote to memory of 2796	4724	bdbc624e4c40d85f3927d8dc261ee069982728471bde7a245504c3e903f1234e.exe	93
PID 4724 wrote to memory of 2796	4724	bdbc624e4c40d85f3927d8dc261ee069982728471bde7a245504c3e903f1234e.exe	93
PID 4724 wrote to memory of 4184	4724	bdbc624e4c40d85f3927d8dc261ee069982728471bde7a245504c3e903f1234e.exe	96
PID 4724 wrote to memory of 4184	4724	bdbc624e4c40d85f3927d8dc261ee069982728471bde7a245504c3e903f1234e.exe	96
PID 4724 wrote to memory of 2748	4724	bdbc624e4c40d85f3927d8dc261ee069982728471bde7a245504c3e903f1234e.exe	98
PID 4724 wrote to memory of 2748	4724	bdbc624e4c40d85f3927d8dc261ee069982728471bde7a245504c3e903f1234e.exe	98
PID 4724 wrote to memory of 1424	4724	bdbc624e4c40d85f3927d8dc261ee069982728471bde7a245504c3e903f1234e.exe	100
PID 4724 wrote to memory of 1424	4724	bdbc624e4c40d85f3927d8dc261ee069982728471bde7a245504c3e903f1234e.exe	100
PID 4724 wrote to memory of 1452	4724	bdbc624e4c40d85f3927d8dc261ee069982728471bde7a245504c3e903f1234e.exe	102
PID 4724 wrote to memory of 1452	4724	bdbc624e4c40d85f3927d8dc261ee069982728471bde7a245504c3e903f1234e.exe	102
PID 4724 wrote to memory of 4104	4724	bdbc624e4c40d85f3927d8dc261ee069982728471bde7a245504c3e903f1234e.exe	104
PID 4724 wrote to memory of 4104	4724	bdbc624e4c40d85f3927d8dc261ee069982728471bde7a245504c3e903f1234e.exe	104
PID 4104 wrote to memory of 216	4104	cmd.exe	106
PID 4104 wrote to memory of 216	4104	cmd.exe	106

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
3432	attrib.exe

C:\Users\Admin\AppData\Local\Temp\bdbc624e4c40d85f3927d8dc261ee069982728471bde7a245504c3e903f1234e.exe
"C:\Users\Admin\AppData\Local\Temp\bdbc624e4c40d85f3927d8dc261ee069982728471bde7a245504c3e903f1234e.exe"
1⤵
- Drops file in Drivers directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4724
- C:\Windows\SYSTEM32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\bdbc624e4c40d85f3927d8dc261ee069982728471bde7a245504c3e903f1234e.exe"
  2⤵
  - Views/modifies file attributes
  PID:3432
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\bdbc624e4c40d85f3927d8dc261ee069982728471bde7a245504c3e903f1234e.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1472
- 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:4508
- 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:2860
- 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:2456
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2796
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:4184
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:2748
- 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:1424
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:1452
- C:\Windows\SYSTEM32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\bdbc624e4c40d85f3927d8dc261ee069982728471bde7a245504c3e903f1234e.exe" && pause
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4104
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - Runs ping.exe
    PID:216

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 f97ff12a8abf4bf88bb6497bd2ac2da12628c8847a8ba5a9026bdbb76507cdfb
MD5 77d622bb1a5b250869a3238b9bc1402b
SHA1 d47f4003c2554b9dfc4c16f22460b331886b191b
SHA512 d6789b5499f23c9035375a102271e17a8a82e57d6f5312fa24242e08a83efdeb8becb7622f55c4cf1b89c7d864b445df11f4d994cf7e2f87a900535bcca12fd9
MD5 SHA1 SHA512

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StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 948B
SHA256 18a2aa7e245c6732f95fb7749b2b4d29007f2c56a9c5bfbc5e3c127bdfe5f158
MD5 2af06a6b36db9473e4a7d9c7ab72b70b
SHA1 8ef34b9b961e51bdd1b8d7d9db2ec1b0a4764645
SHA512 3495567a5d5af94ae27be51313d9e2630c52017d808042fe0d56baa34fa1d246eb15c253d14c77c77a1d8f2f1c81680e623044ae95415b095696e7fa141ac7cf
MD5 SHA1 SHA512

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StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 1KB
SHA256 cd0a1056e8f1b6cb5cb328532239d802f4e2aa8f8fcdc0fcb487684bd68e0dcc
MD5 276798eeb29a49dc6e199768bc9c2e71
SHA1 5fdc8ccb897ac2df7476fbb07517aca5b7a6205b
SHA512 0d34fce64bbefc57d64fa6e03ca886952263d5f24df9c1c4cce6a1e8f5a47a9a21e9820f8d38caa7f7b43a52336ce00b738ea18419aaa7c788b72e04ce19e4f2
MD5 SHA1 SHA512

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StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 1KB
SHA256 c1ead17eef37b4b461cedc276504a441489e819c7f943037f2001966aeec90af
MD5 6317adf4fbc43ea2fd68861fafd57155
SHA1 6b87c718893c83c6eed2767e8d9cbc6443e31913
SHA512 17229aae8622e4bfc3caaac55684f7d4ccd3162af5919c851b1d8ac4060b6bb7b75044ecee116523d05acb55197dcb60780958f629450edef386f1e6f65f49f0
MD5 SHA1 SHA512

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__PSScriptPolicyTest_4pjs2105.vcn.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_4pjs2105.vcn.ps1
Size 60B
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
MD5 SHA1 SHA512

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memory/1472-3-0x000001AC0B2D0000-0x000001AC0B2F2000-memory.dmp

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memory/1472-13-0x00007FFB4CA40000-0x00007FFB4D501000-memory.dmp

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memory/1472-14-0x00007FFB4CA40000-0x00007FFB4D501000-memory.dmp

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memory/1472-16-0x00007FFB4CA40000-0x00007FFB4D501000-memory.dmp

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memory/4724-31-0x000001BFFC4F0000-0x000001BFFC540000-memory.dmp

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memory/4724-32-0x000001BFFB950000-0x000001BFFB96E000-memory.dmp

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memory/4724-30-0x000001BFFC470000-0x000001BFFC4E6000-memory.dmp

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memory/4724-0-0x00007FFB4CA43000-0x00007FFB4CA45000-memory.dmp

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memory/4724-2-0x00007FFB4CA40000-0x00007FFB4D501000-memory.dmp

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memory/4724-69-0x000001BFFB980000-0x000001BFFB98A000-memory.dmp

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memory/4724-70-0x000001BFFC3F0000-0x000001BFFC402000-memory.dmp

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memory/4724-1-0x000001BFF9CC0000-0x000001BFF9D00000-memory.dmp

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memory/4724-90-0x00007FFB4CA40000-0x00007FFB4D501000-memory.dmp

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