umbral | c2f3bc3c8bd87178205ea3c72c1c15ff8e79586bb56c88edb1e4db3099af1cbf

Analysis

max time kernel
92s
max time network
93s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
04-01-2025 08:20

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

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
behavioral2/memory/5116-0-0x0000021D39B10000-0x0000021D39B72000-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
3136	powershell.exe
2692	powershell.exe
1932	powershell.exe
1704	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
20	discord.com
21	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
12	ip-api.com

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
4216	wmic.exe

Suspicious behavior: EnumeratesProcesses 10 IoCs

pid	Process
3136	powershell.exe
3136	powershell.exe
2692	powershell.exe
2692	powershell.exe
1932	powershell.exe
1932	powershell.exe
4636	powershell.exe
4636	powershell.exe
1704	powershell.exe
1704	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	5116	c2f3bc3c8bd87178205ea3c72c1c15ff8e79586bb56c88edb1e4db3099af1cbfN.exe
Token: SeDebugPrivilege	3136	powershell.exe
Token: SeDebugPrivilege	2692	powershell.exe
Token: SeDebugPrivilege	1932	powershell.exe
Token: SeDebugPrivilege	4636	powershell.exe
Token: SeIncreaseQuotaPrivilege	4488	wmic.exe
Token: SeSecurityPrivilege	4488	wmic.exe
Token: SeTakeOwnershipPrivilege	4488	wmic.exe
Token: SeLoadDriverPrivilege	4488	wmic.exe
Token: SeSystemProfilePrivilege	4488	wmic.exe
Token: SeSystemtimePrivilege	4488	wmic.exe
Token: SeProfSingleProcessPrivilege	4488	wmic.exe
Token: SeIncBasePriorityPrivilege	4488	wmic.exe
Token: SeCreatePagefilePrivilege	4488	wmic.exe
Token: SeBackupPrivilege	4488	wmic.exe
Token: SeRestorePrivilege	4488	wmic.exe
Token: SeShutdownPrivilege	4488	wmic.exe
Token: SeDebugPrivilege	4488	wmic.exe
Token: SeSystemEnvironmentPrivilege	4488	wmic.exe
Token: SeRemoteShutdownPrivilege	4488	wmic.exe
Token: SeUndockPrivilege	4488	wmic.exe
Token: SeManageVolumePrivilege	4488	wmic.exe
Token: 33	4488	wmic.exe
Token: 34	4488	wmic.exe
Token: 35	4488	wmic.exe
Token: 36	4488	wmic.exe
Token: SeIncreaseQuotaPrivilege	4488	wmic.exe
Token: SeSecurityPrivilege	4488	wmic.exe
Token: SeTakeOwnershipPrivilege	4488	wmic.exe
Token: SeLoadDriverPrivilege	4488	wmic.exe
Token: SeSystemProfilePrivilege	4488	wmic.exe
Token: SeSystemtimePrivilege	4488	wmic.exe
Token: SeProfSingleProcessPrivilege	4488	wmic.exe
Token: SeIncBasePriorityPrivilege	4488	wmic.exe
Token: SeCreatePagefilePrivilege	4488	wmic.exe
Token: SeBackupPrivilege	4488	wmic.exe
Token: SeRestorePrivilege	4488	wmic.exe
Token: SeShutdownPrivilege	4488	wmic.exe
Token: SeDebugPrivilege	4488	wmic.exe
Token: SeSystemEnvironmentPrivilege	4488	wmic.exe
Token: SeRemoteShutdownPrivilege	4488	wmic.exe
Token: SeUndockPrivilege	4488	wmic.exe
Token: SeManageVolumePrivilege	4488	wmic.exe
Token: 33	4488	wmic.exe
Token: 34	4488	wmic.exe
Token: 35	4488	wmic.exe
Token: 36	4488	wmic.exe
Token: SeIncreaseQuotaPrivilege	4260	wmic.exe
Token: SeSecurityPrivilege	4260	wmic.exe
Token: SeTakeOwnershipPrivilege	4260	wmic.exe
Token: SeLoadDriverPrivilege	4260	wmic.exe
Token: SeSystemProfilePrivilege	4260	wmic.exe
Token: SeSystemtimePrivilege	4260	wmic.exe
Token: SeProfSingleProcessPrivilege	4260	wmic.exe
Token: SeIncBasePriorityPrivilege	4260	wmic.exe
Token: SeCreatePagefilePrivilege	4260	wmic.exe
Token: SeBackupPrivilege	4260	wmic.exe
Token: SeRestorePrivilege	4260	wmic.exe
Token: SeShutdownPrivilege	4260	wmic.exe
Token: SeDebugPrivilege	4260	wmic.exe
Token: SeSystemEnvironmentPrivilege	4260	wmic.exe
Token: SeRemoteShutdownPrivilege	4260	wmic.exe
Token: SeUndockPrivilege	4260	wmic.exe
Token: SeManageVolumePrivilege	4260	wmic.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 5116 wrote to memory of 3136	5116	c2f3bc3c8bd87178205ea3c72c1c15ff8e79586bb56c88edb1e4db3099af1cbfN.exe	82
PID 5116 wrote to memory of 3136	5116	c2f3bc3c8bd87178205ea3c72c1c15ff8e79586bb56c88edb1e4db3099af1cbfN.exe	82
PID 5116 wrote to memory of 2692	5116	c2f3bc3c8bd87178205ea3c72c1c15ff8e79586bb56c88edb1e4db3099af1cbfN.exe	84
PID 5116 wrote to memory of 2692	5116	c2f3bc3c8bd87178205ea3c72c1c15ff8e79586bb56c88edb1e4db3099af1cbfN.exe	84
PID 5116 wrote to memory of 1932	5116	c2f3bc3c8bd87178205ea3c72c1c15ff8e79586bb56c88edb1e4db3099af1cbfN.exe	86
PID 5116 wrote to memory of 1932	5116	c2f3bc3c8bd87178205ea3c72c1c15ff8e79586bb56c88edb1e4db3099af1cbfN.exe	86
PID 5116 wrote to memory of 4636	5116	c2f3bc3c8bd87178205ea3c72c1c15ff8e79586bb56c88edb1e4db3099af1cbfN.exe	88
PID 5116 wrote to memory of 4636	5116	c2f3bc3c8bd87178205ea3c72c1c15ff8e79586bb56c88edb1e4db3099af1cbfN.exe	88
PID 5116 wrote to memory of 4488	5116	c2f3bc3c8bd87178205ea3c72c1c15ff8e79586bb56c88edb1e4db3099af1cbfN.exe	90
PID 5116 wrote to memory of 4488	5116	c2f3bc3c8bd87178205ea3c72c1c15ff8e79586bb56c88edb1e4db3099af1cbfN.exe	90
PID 5116 wrote to memory of 4260	5116	c2f3bc3c8bd87178205ea3c72c1c15ff8e79586bb56c88edb1e4db3099af1cbfN.exe	93
PID 5116 wrote to memory of 4260	5116	c2f3bc3c8bd87178205ea3c72c1c15ff8e79586bb56c88edb1e4db3099af1cbfN.exe	93
PID 5116 wrote to memory of 4192	5116	c2f3bc3c8bd87178205ea3c72c1c15ff8e79586bb56c88edb1e4db3099af1cbfN.exe	95
PID 5116 wrote to memory of 4192	5116	c2f3bc3c8bd87178205ea3c72c1c15ff8e79586bb56c88edb1e4db3099af1cbfN.exe	95
PID 5116 wrote to memory of 1704	5116	c2f3bc3c8bd87178205ea3c72c1c15ff8e79586bb56c88edb1e4db3099af1cbfN.exe	97
PID 5116 wrote to memory of 1704	5116	c2f3bc3c8bd87178205ea3c72c1c15ff8e79586bb56c88edb1e4db3099af1cbfN.exe	97
PID 5116 wrote to memory of 4216	5116	c2f3bc3c8bd87178205ea3c72c1c15ff8e79586bb56c88edb1e4db3099af1cbfN.exe	99
PID 5116 wrote to memory of 4216	5116	c2f3bc3c8bd87178205ea3c72c1c15ff8e79586bb56c88edb1e4db3099af1cbfN.exe	99

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:5116
- 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:3136
- 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:2692
- 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:1932
- 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:4636
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:4488
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:4260
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:4192
- 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:1704
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:4216

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

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log

Filesize
2KB

MD5
d85ba6ff808d9e5444a4b369f5bc2730

SHA1
31aa9d96590fff6981b315e0b391b575e4c0804a

SHA256
84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f

SHA512
8c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
944B

MD5
6d3e9c29fe44e90aae6ed30ccf799ca8

SHA1
c7974ef72264bbdf13a2793ccf1aed11bc565dce

SHA256
2360634e63e8f0b5748e2c56ebb8f4aa78e71008ea7b5c9ca1c49be03b49557d

SHA512
60c38c4367352537545d859f64b9c5cbada94240478d1d039fd27b5ecba4dc1c90051557c16d802269703b873546ead416279c0a80c6fd5e49ad361cef22596a

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
948B

MD5
17d8127be94d3c1b6fcc9a4ed585003e

SHA1
789874fcc7c778c723f3e89822d8cc8750c6c4c8

SHA256
ea357ad1f95863b3618d31e5b0f90495331f64de2b784d9e185b48668c937a7b

SHA512
bb18b6d07d82227f5cfbe3eb460df79ec892c560ad2964dcd4782aa26336ae15059843bf46a739bdd4a4daa58057f99102531a756a1cf434ce6449b3cd35a98e

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
1KB

MD5
548dd08570d121a65e82abb7171cae1c

SHA1
1a1b5084b3a78f3acd0d811cc79dbcac121217ab

SHA256
cdf17b8532ebcebac3cfe23954a30aa32edd268d040da79c82687e4ccb044adc

SHA512
37b98b09178b51eec9599af90d027d2f1028202efc1633047e16e41f1a95610984af5620baac07db085ccfcb96942aafffad17aa1f44f63233e83869dc9f697b

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
1KB

MD5
23272afe282560b0a5abad03e415e79b

SHA1
d24997643237343f0db0d9ab70e445450c70c795

SHA256
b3e29a57ee8c2da3dd7df14e6fd34632246e41950f3efd9ce9d35f1797ece1c9

SHA512
bc013bbd6083ef858570cdcdc89f761177f298cc394a0acfc553b2decc61e056459a539037ed67af13c2c4851e20d8df92a1c23d3d0b818a2e585506f28053c4

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_12glo4dx.vuh.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/3136-13-0x00007FFBD2920000-0x00007FFBD33E1000-memory.dmp

Filesize
10.8MB

Download
memory/3136-14-0x00007FFBD2920000-0x00007FFBD33E1000-memory.dmp

Filesize
10.8MB

Download
memory/3136-15-0x00007FFBD2920000-0x00007FFBD33E1000-memory.dmp

Filesize
10.8MB

Download
memory/3136-18-0x00007FFBD2920000-0x00007FFBD33E1000-memory.dmp

Filesize
10.8MB

Download
memory/3136-8-0x00000277C5290000-0x00000277C52B2000-memory.dmp

Filesize
136KB

Download
memory/5116-33-0x0000021D54260000-0x0000021D542B0000-memory.dmp

Filesize
320KB

Download
memory/5116-32-0x0000021D542E0000-0x0000021D54356000-memory.dmp

Filesize
472KB

Download
memory/5116-34-0x0000021D3B900000-0x0000021D3B91E000-memory.dmp

Filesize
120KB

Download
memory/5116-0-0x0000021D39B10000-0x0000021D39B72000-memory.dmp

Filesize
392KB

Download
memory/5116-1-0x00007FFBD2923000-0x00007FFBD2925000-memory.dmp

Filesize
8KB

Download
memory/5116-72-0x0000021D54360000-0x0000021D54372000-memory.dmp

Filesize
72KB

Download
memory/5116-71-0x0000021D3B930000-0x0000021D3B93A000-memory.dmp

Filesize
40KB

Download
memory/5116-2-0x00007FFBD2920000-0x00007FFBD33E1000-memory.dmp

Filesize
10.8MB

Download
memory/5116-92-0x00007FFBD2920000-0x00007FFBD33E1000-memory.dmp

Filesize
10.8MB

Download