umbral | c2f3bc3c8bd87178205ea3c72c1c15ff8e79586bb56c88edb1e4db3099af1cbf

Analysis

max time kernel
117s
max time network
118s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
04/01/2025, 08:20

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General

Target

c2f3bc3c8bd87178205ea3c72c1c15ff8e79586bb56c88edb1e4db3099af1cbfN.exe
Size

366KB
MD5

f856292a46803beda2e424494f860b00
SHA1

f668d96f3134eb19690aeb24099bcc22f2f95152
SHA256

c2f3bc3c8bd87178205ea3c72c1c15ff8e79586bb56c88edb1e4db3099af1cbf
SHA512

686fc364d44ed83b600dcaec2544b3bbfe6850c246a93c342e3a7cc6acde09eb0db7c9fd2d942b7fe318593316d9455fcb40f7597b086c98ad5e483bb32a835d
SSDEEP

6144:1loZMOrIkd8g+EtXHkv/iD4PF4sDJ6idrIJbGmTesb8e1mXXBiZgLojfLeV2givU:XoZtL+EP8PF4sDJ6idrIJbGmTf0XYZgu

Score

10^/10

umbral execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/2608-1-0x0000000000B40000-0x0000000000BA2000-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
2784	powershell.exe
852	powershell.exe
2504	powershell.exe
1908	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	c2f3bc3c8bd87178205ea3c72c1c15ff8e79586bb56c88edb1e4db3099af1cbfN.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

Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service

T1102

flow	ioc
8	discord.com
9	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

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
868	wmic.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
2784	powershell.exe
852	powershell.exe
2504	powershell.exe
2572	powershell.exe
1908	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2608	c2f3bc3c8bd87178205ea3c72c1c15ff8e79586bb56c88edb1e4db3099af1cbfN.exe
Token: SeDebugPrivilege	2784	powershell.exe
Token: SeDebugPrivilege	852	powershell.exe
Token: SeDebugPrivilege	2504	powershell.exe
Token: SeDebugPrivilege	2572	powershell.exe
Token: SeIncreaseQuotaPrivilege	2876	wmic.exe
Token: SeSecurityPrivilege	2876	wmic.exe
Token: SeTakeOwnershipPrivilege	2876	wmic.exe
Token: SeLoadDriverPrivilege	2876	wmic.exe
Token: SeSystemProfilePrivilege	2876	wmic.exe
Token: SeSystemtimePrivilege	2876	wmic.exe
Token: SeProfSingleProcessPrivilege	2876	wmic.exe
Token: SeIncBasePriorityPrivilege	2876	wmic.exe
Token: SeCreatePagefilePrivilege	2876	wmic.exe
Token: SeBackupPrivilege	2876	wmic.exe
Token: SeRestorePrivilege	2876	wmic.exe
Token: SeShutdownPrivilege	2876	wmic.exe
Token: SeDebugPrivilege	2876	wmic.exe
Token: SeSystemEnvironmentPrivilege	2876	wmic.exe
Token: SeRemoteShutdownPrivilege	2876	wmic.exe
Token: SeUndockPrivilege	2876	wmic.exe
Token: SeManageVolumePrivilege	2876	wmic.exe
Token: 33	2876	wmic.exe
Token: 34	2876	wmic.exe
Token: 35	2876	wmic.exe
Token: SeIncreaseQuotaPrivilege	2876	wmic.exe
Token: SeSecurityPrivilege	2876	wmic.exe
Token: SeTakeOwnershipPrivilege	2876	wmic.exe
Token: SeLoadDriverPrivilege	2876	wmic.exe
Token: SeSystemProfilePrivilege	2876	wmic.exe
Token: SeSystemtimePrivilege	2876	wmic.exe
Token: SeProfSingleProcessPrivilege	2876	wmic.exe
Token: SeIncBasePriorityPrivilege	2876	wmic.exe
Token: SeCreatePagefilePrivilege	2876	wmic.exe
Token: SeBackupPrivilege	2876	wmic.exe
Token: SeRestorePrivilege	2876	wmic.exe
Token: SeShutdownPrivilege	2876	wmic.exe
Token: SeDebugPrivilege	2876	wmic.exe
Token: SeSystemEnvironmentPrivilege	2876	wmic.exe
Token: SeRemoteShutdownPrivilege	2876	wmic.exe
Token: SeUndockPrivilege	2876	wmic.exe
Token: SeManageVolumePrivilege	2876	wmic.exe
Token: 33	2876	wmic.exe
Token: 34	2876	wmic.exe
Token: 35	2876	wmic.exe
Token: SeIncreaseQuotaPrivilege	1784	wmic.exe
Token: SeSecurityPrivilege	1784	wmic.exe
Token: SeTakeOwnershipPrivilege	1784	wmic.exe
Token: SeLoadDriverPrivilege	1784	wmic.exe
Token: SeSystemProfilePrivilege	1784	wmic.exe
Token: SeSystemtimePrivilege	1784	wmic.exe
Token: SeProfSingleProcessPrivilege	1784	wmic.exe
Token: SeIncBasePriorityPrivilege	1784	wmic.exe
Token: SeCreatePagefilePrivilege	1784	wmic.exe
Token: SeBackupPrivilege	1784	wmic.exe
Token: SeRestorePrivilege	1784	wmic.exe
Token: SeShutdownPrivilege	1784	wmic.exe
Token: SeDebugPrivilege	1784	wmic.exe
Token: SeSystemEnvironmentPrivilege	1784	wmic.exe
Token: SeRemoteShutdownPrivilege	1784	wmic.exe
Token: SeUndockPrivilege	1784	wmic.exe
Token: SeManageVolumePrivilege	1784	wmic.exe
Token: 33	1784	wmic.exe
Token: 34	1784	wmic.exe

Suspicious use of WriteProcessMemory 27 IoCs

description	pid	Process	procid_target
PID 2608 wrote to memory of 2784	2608	c2f3bc3c8bd87178205ea3c72c1c15ff8e79586bb56c88edb1e4db3099af1cbfN.exe	30
PID 2608 wrote to memory of 2784	2608	c2f3bc3c8bd87178205ea3c72c1c15ff8e79586bb56c88edb1e4db3099af1cbfN.exe	30
PID 2608 wrote to memory of 2784	2608	c2f3bc3c8bd87178205ea3c72c1c15ff8e79586bb56c88edb1e4db3099af1cbfN.exe	30
PID 2608 wrote to memory of 852	2608	c2f3bc3c8bd87178205ea3c72c1c15ff8e79586bb56c88edb1e4db3099af1cbfN.exe	32
PID 2608 wrote to memory of 852	2608	c2f3bc3c8bd87178205ea3c72c1c15ff8e79586bb56c88edb1e4db3099af1cbfN.exe	32
PID 2608 wrote to memory of 852	2608	c2f3bc3c8bd87178205ea3c72c1c15ff8e79586bb56c88edb1e4db3099af1cbfN.exe	32
PID 2608 wrote to memory of 2504	2608	c2f3bc3c8bd87178205ea3c72c1c15ff8e79586bb56c88edb1e4db3099af1cbfN.exe	34
PID 2608 wrote to memory of 2504	2608	c2f3bc3c8bd87178205ea3c72c1c15ff8e79586bb56c88edb1e4db3099af1cbfN.exe	34
PID 2608 wrote to memory of 2504	2608	c2f3bc3c8bd87178205ea3c72c1c15ff8e79586bb56c88edb1e4db3099af1cbfN.exe	34
PID 2608 wrote to memory of 2572	2608	c2f3bc3c8bd87178205ea3c72c1c15ff8e79586bb56c88edb1e4db3099af1cbfN.exe	36
PID 2608 wrote to memory of 2572	2608	c2f3bc3c8bd87178205ea3c72c1c15ff8e79586bb56c88edb1e4db3099af1cbfN.exe	36
PID 2608 wrote to memory of 2572	2608	c2f3bc3c8bd87178205ea3c72c1c15ff8e79586bb56c88edb1e4db3099af1cbfN.exe	36
PID 2608 wrote to memory of 2876	2608	c2f3bc3c8bd87178205ea3c72c1c15ff8e79586bb56c88edb1e4db3099af1cbfN.exe	38
PID 2608 wrote to memory of 2876	2608	c2f3bc3c8bd87178205ea3c72c1c15ff8e79586bb56c88edb1e4db3099af1cbfN.exe	38
PID 2608 wrote to memory of 2876	2608	c2f3bc3c8bd87178205ea3c72c1c15ff8e79586bb56c88edb1e4db3099af1cbfN.exe	38
PID 2608 wrote to memory of 1784	2608	c2f3bc3c8bd87178205ea3c72c1c15ff8e79586bb56c88edb1e4db3099af1cbfN.exe	41
PID 2608 wrote to memory of 1784	2608	c2f3bc3c8bd87178205ea3c72c1c15ff8e79586bb56c88edb1e4db3099af1cbfN.exe	41
PID 2608 wrote to memory of 1784	2608	c2f3bc3c8bd87178205ea3c72c1c15ff8e79586bb56c88edb1e4db3099af1cbfN.exe	41
PID 2608 wrote to memory of 2996	2608	c2f3bc3c8bd87178205ea3c72c1c15ff8e79586bb56c88edb1e4db3099af1cbfN.exe	43
PID 2608 wrote to memory of 2996	2608	c2f3bc3c8bd87178205ea3c72c1c15ff8e79586bb56c88edb1e4db3099af1cbfN.exe	43
PID 2608 wrote to memory of 2996	2608	c2f3bc3c8bd87178205ea3c72c1c15ff8e79586bb56c88edb1e4db3099af1cbfN.exe	43
PID 2608 wrote to memory of 1908	2608	c2f3bc3c8bd87178205ea3c72c1c15ff8e79586bb56c88edb1e4db3099af1cbfN.exe	45
PID 2608 wrote to memory of 1908	2608	c2f3bc3c8bd87178205ea3c72c1c15ff8e79586bb56c88edb1e4db3099af1cbfN.exe	45
PID 2608 wrote to memory of 1908	2608	c2f3bc3c8bd87178205ea3c72c1c15ff8e79586bb56c88edb1e4db3099af1cbfN.exe	45
PID 2608 wrote to memory of 868	2608	c2f3bc3c8bd87178205ea3c72c1c15ff8e79586bb56c88edb1e4db3099af1cbfN.exe	47
PID 2608 wrote to memory of 868	2608	c2f3bc3c8bd87178205ea3c72c1c15ff8e79586bb56c88edb1e4db3099af1cbfN.exe	47
PID 2608 wrote to memory of 868	2608	c2f3bc3c8bd87178205ea3c72c1c15ff8e79586bb56c88edb1e4db3099af1cbfN.exe	47

C:\Users\Admin\AppData\Local\Temp\c2f3bc3c8bd87178205ea3c72c1c15ff8e79586bb56c88edb1e4db3099af1cbfN.exe
"C:\Users\Admin\AppData\Local\Temp\c2f3bc3c8bd87178205ea3c72c1c15ff8e79586bb56c88edb1e4db3099af1cbfN.exe"
1⤵
- Drops file in Drivers directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2608
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\c2f3bc3c8bd87178205ea3c72c1c15ff8e79586bb56c88edb1e4db3099af1cbfN.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2784
- 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:852
- 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:2504
- 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:2572
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2876
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1784
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:2996
- 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:1908
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:868

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

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
534a77725d9dea1ca9a78326645cce85

SHA1
05dc97d2655db677978f1037a9beb40e5ae78518

SHA256
c08c04365184420cb3ef2c36e3f8c5003ae4db574d31598194aeabdf44f91305

SHA512
ca3a1fa4a67a8a7373080939aae6c38a1cfe3be25106ad3b824f6983125ace547112fcf562d49723bd023c3e37063810d109c27f3a50cc782083e167e80f77ea

Download Submit
memory/852-22-0x0000000002860000-0x0000000002868000-memory.dmp

Filesize
32KB

Download
memory/852-21-0x000000001B740000-0x000000001BA22000-memory.dmp

Filesize
2.9MB

Download
memory/1908-48-0x000000001B6D0000-0x000000001B9B2000-memory.dmp

Filesize
2.9MB

Download
memory/2608-1-0x0000000000B40000-0x0000000000BA2000-memory.dmp

Filesize
392KB

Download
memory/2608-2-0x000007FEF5960000-0x000007FEF634C000-memory.dmp

Filesize
9.9MB

Download
memory/2608-52-0x000007FEF5960000-0x000007FEF634C000-memory.dmp

Filesize
9.9MB

Download
memory/2608-0-0x000007FEF5963000-0x000007FEF5964000-memory.dmp

Filesize
4KB

Download
memory/2608-41-0x000007FEF5960000-0x000007FEF634C000-memory.dmp

Filesize
9.9MB

Download
memory/2608-40-0x000007FEF5963000-0x000007FEF5964000-memory.dmp

Filesize
4KB

Download
memory/2784-8-0x000000001B740000-0x000000001BA22000-memory.dmp

Filesize
2.9MB

Download
memory/2784-15-0x000007FEED470000-0x000007FEEDE0D000-memory.dmp

Filesize
9.6MB

Download
memory/2784-14-0x000007FEED470000-0x000007FEEDE0D000-memory.dmp

Filesize
9.6MB

Download
memory/2784-11-0x000007FEED470000-0x000007FEEDE0D000-memory.dmp

Filesize
9.6MB

Download
memory/2784-12-0x000007FEED470000-0x000007FEEDE0D000-memory.dmp

Filesize
9.6MB

Download
memory/2784-13-0x000007FEED470000-0x000007FEEDE0D000-memory.dmp

Filesize
9.6MB

Download
memory/2784-10-0x0000000001EF0000-0x0000000001EF8000-memory.dmp

Filesize
32KB

Download
memory/2784-9-0x000007FEED470000-0x000007FEEDE0D000-memory.dmp

Filesize
9.6MB

Download
memory/2784-7-0x000007FEED72E000-0x000007FEED72F000-memory.dmp

Filesize
4KB

Download