umbral | 1ab54a5786eeedb01e74215a50a796fefbd12c47c0b864b1be5f6d45a2951bf4

Analysis

max time kernel
6s
max time network
6s
platform
windows11-21h2_x64
resource
win11-20240802-en
resource tags

arch:x64arch:x86image:win11-20240802-enlocale:en-usos:windows11-21h2-x64system
submitted
08-08-2024 16:35

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General

Target

uhm, uhh.exe
Size

229KB
MD5

0d407796194f47dd4739950f347631dc
SHA1

2e843294cd4ccbdcb53b0ca4cdcb0d6640d75615
SHA256

1ab54a5786eeedb01e74215a50a796fefbd12c47c0b864b1be5f6d45a2951bf4
SHA512

b70550be02cc4b622fa35c0189884104a2b6719e8b593e156b74874cffc835a906df3b746b2247c2bffffbb47be6470ba3ac16cb2c8e163785f64650c43a4b97
SSDEEP

6144:tloZMNrIkd8g+EtXHkv/iD41KaC9rI8j867NokRQg4db8e1mAG+Iwi:voZmL+EP81KaC9rI8j867NokRQgkC+Ip

Score

10^/10

umbral credential_access execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral4/memory/4088-1-0x0000023A13700000-0x0000023A13740000-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
3936	powershell.exe
8	powershell.exe
3804	powershell.exe
1852	powershell.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
9	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
1	ip-api.com

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
4704	wmic.exe

Suspicious behavior: EnumeratesProcesses 10 IoCs

pid	Process
3936	powershell.exe
3936	powershell.exe
8	powershell.exe
8	powershell.exe
3804	powershell.exe
3804	powershell.exe
904	powershell.exe
904	powershell.exe
1852	powershell.exe
1852	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	4088	uhm, uhh.exe
Token: SeDebugPrivilege	3936	powershell.exe
Token: SeDebugPrivilege	8	powershell.exe
Token: SeDebugPrivilege	3804	powershell.exe
Token: SeDebugPrivilege	904	powershell.exe
Token: SeIncreaseQuotaPrivilege	572	wmic.exe
Token: SeSecurityPrivilege	572	wmic.exe
Token: SeTakeOwnershipPrivilege	572	wmic.exe
Token: SeLoadDriverPrivilege	572	wmic.exe
Token: SeSystemProfilePrivilege	572	wmic.exe
Token: SeSystemtimePrivilege	572	wmic.exe
Token: SeProfSingleProcessPrivilege	572	wmic.exe
Token: SeIncBasePriorityPrivilege	572	wmic.exe
Token: SeCreatePagefilePrivilege	572	wmic.exe
Token: SeBackupPrivilege	572	wmic.exe
Token: SeRestorePrivilege	572	wmic.exe
Token: SeShutdownPrivilege	572	wmic.exe
Token: SeDebugPrivilege	572	wmic.exe
Token: SeSystemEnvironmentPrivilege	572	wmic.exe
Token: SeRemoteShutdownPrivilege	572	wmic.exe
Token: SeUndockPrivilege	572	wmic.exe
Token: SeManageVolumePrivilege	572	wmic.exe
Token: 33	572	wmic.exe
Token: 34	572	wmic.exe
Token: 35	572	wmic.exe
Token: 36	572	wmic.exe
Token: SeIncreaseQuotaPrivilege	572	wmic.exe
Token: SeSecurityPrivilege	572	wmic.exe
Token: SeTakeOwnershipPrivilege	572	wmic.exe
Token: SeLoadDriverPrivilege	572	wmic.exe
Token: SeSystemProfilePrivilege	572	wmic.exe
Token: SeSystemtimePrivilege	572	wmic.exe
Token: SeProfSingleProcessPrivilege	572	wmic.exe
Token: SeIncBasePriorityPrivilege	572	wmic.exe
Token: SeCreatePagefilePrivilege	572	wmic.exe
Token: SeBackupPrivilege	572	wmic.exe
Token: SeRestorePrivilege	572	wmic.exe
Token: SeShutdownPrivilege	572	wmic.exe
Token: SeDebugPrivilege	572	wmic.exe
Token: SeSystemEnvironmentPrivilege	572	wmic.exe
Token: SeRemoteShutdownPrivilege	572	wmic.exe
Token: SeUndockPrivilege	572	wmic.exe
Token: SeManageVolumePrivilege	572	wmic.exe
Token: 33	572	wmic.exe
Token: 34	572	wmic.exe
Token: 35	572	wmic.exe
Token: 36	572	wmic.exe
Token: SeIncreaseQuotaPrivilege	4872	wmic.exe
Token: SeSecurityPrivilege	4872	wmic.exe
Token: SeTakeOwnershipPrivilege	4872	wmic.exe
Token: SeLoadDriverPrivilege	4872	wmic.exe
Token: SeSystemProfilePrivilege	4872	wmic.exe
Token: SeSystemtimePrivilege	4872	wmic.exe
Token: SeProfSingleProcessPrivilege	4872	wmic.exe
Token: SeIncBasePriorityPrivilege	4872	wmic.exe
Token: SeCreatePagefilePrivilege	4872	wmic.exe
Token: SeBackupPrivilege	4872	wmic.exe
Token: SeRestorePrivilege	4872	wmic.exe
Token: SeShutdownPrivilege	4872	wmic.exe
Token: SeDebugPrivilege	4872	wmic.exe
Token: SeSystemEnvironmentPrivilege	4872	wmic.exe
Token: SeRemoteShutdownPrivilege	4872	wmic.exe
Token: SeUndockPrivilege	4872	wmic.exe
Token: SeManageVolumePrivilege	4872	wmic.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 4088 wrote to memory of 3936	4088	uhm, uhh.exe	81
PID 4088 wrote to memory of 3936	4088	uhm, uhh.exe	81
PID 4088 wrote to memory of 8	4088	uhm, uhh.exe	84
PID 4088 wrote to memory of 8	4088	uhm, uhh.exe	84
PID 4088 wrote to memory of 3804	4088	uhm, uhh.exe	86
PID 4088 wrote to memory of 3804	4088	uhm, uhh.exe	86
PID 4088 wrote to memory of 904	4088	uhm, uhh.exe	88
PID 4088 wrote to memory of 904	4088	uhm, uhh.exe	88
PID 4088 wrote to memory of 572	4088	uhm, uhh.exe	90
PID 4088 wrote to memory of 572	4088	uhm, uhh.exe	90
PID 4088 wrote to memory of 4872	4088	uhm, uhh.exe	93
PID 4088 wrote to memory of 4872	4088	uhm, uhh.exe	93
PID 4088 wrote to memory of 2496	4088	uhm, uhh.exe	95
PID 4088 wrote to memory of 2496	4088	uhm, uhh.exe	95
PID 4088 wrote to memory of 1852	4088	uhm, uhh.exe	97
PID 4088 wrote to memory of 1852	4088	uhm, uhh.exe	97
PID 4088 wrote to memory of 4704	4088	uhm, uhh.exe	99
PID 4088 wrote to memory of 4704	4088	uhm, uhh.exe	99

C:\Users\Admin\AppData\Local\Temp\uhm, uhh.exe
"C:\Users\Admin\AppData\Local\Temp\uhm, uhh.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4088
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\uhm, uhh.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3936
- 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:8
- 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:3804
- 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:904
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:572
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:4872
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:2496
- 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:1852
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:4704

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\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log

Filesize
2KB

MD5
627073ee3ca9676911bee35548eff2b8

SHA1
4c4b68c65e2cab9864b51167d710aa29ebdcff2e

SHA256
85b280a39fc31ba1e15fb06102a05b8405ff3b82feb181d4170f04e466dd647c

SHA512
3c5f6c03e253b83c57e8d6f0334187dbdcdf4fa549eecd36cbc1322dca6d3ca891dc6a019c49ec2eafb88f82d0434299c31e4dfaab123acb42e0546218f311fb

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

Filesize
944B

MD5
1a9fa92a4f2e2ec9e244d43a6a4f8fb9

SHA1
9910190edfaccece1dfcc1d92e357772f5dae8f7

SHA256
0ee052d5333fd5fd86bc84856fec98e045f077a7ac8051651bf7c521b9706888

SHA512
5d2361476fa22200e6f83883efe7dcb8c3fe7dae8d56e04e28a36e9ae1270c327b6aa161d92b239593da7661289d002c574446ecfd6bd19928209aae25e3ef64

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

Filesize
948B

MD5
02975ea0938bd97fc7230f785cd825a7

SHA1
192713c1f2912016fb8c2f1ed8eb8be4a883218d

SHA256
c330ecfbea7de88e537747edbb97192cbca39b8ec65e9dc6105d2a7a3e3d6859

SHA512
52e28301d3981c4eb78988018a7c56788e1ebbea586612f68016cad8317223a74851bb6a3f91f62d1e8c914c075c775810c90f5994ecadd73c635194aaaf5bf9

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

Filesize
1KB

MD5
83d2d0a413aaa75f465eb40c7c057609

SHA1
a6cb76483b42b495c07b78938a594d4865af0a34

SHA256
13b2980d7c02f6c1dd2329a7c46e18b7178012d600afd589d6f2495acbd85a80

SHA512
fa8e80acdde9aa6f4bd63f6278b46527d04977f102ff39670e0eafa75566c852f667a843012e72547fb2b5a03cd3a738e95280a07e97745b86293e27303dfe84

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

Filesize
1KB

MD5
6ca67a1a64ff4dd3f09a2393fccba8fa

SHA1
906350e7db31efc71679bbdbbcf1133aa2d31c1d

SHA256
6bc103c2e75b013034c77bb204ccbe43c365e9b6cb1697b9b5a1e20dda43427e

SHA512
4d1d3d52107b2eb2faf6918d0559a08acbe89b6a889f6300c55742d91f596a6764c637fc386c80ecbc434d0496ee83f243054c66b9eeb7adef4b2093e932b066

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_3upzm4ar.umf.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/3936-12-0x000001C3EABC0000-0x000001C3EABE2000-memory.dmp

Filesize
136KB

Download
memory/3936-13-0x00007FFBFFA10000-0x00007FFC004D2000-memory.dmp

Filesize
10.8MB

Download
memory/3936-14-0x00007FFBFFA10000-0x00007FFC004D2000-memory.dmp

Filesize
10.8MB

Download
memory/3936-17-0x00007FFBFFA10000-0x00007FFC004D2000-memory.dmp

Filesize
10.8MB

Download
memory/3936-3-0x00007FFBFFA10000-0x00007FFC004D2000-memory.dmp

Filesize
10.8MB

Download
memory/4088-30-0x0000023A15430000-0x0000023A15480000-memory.dmp

Filesize
320KB

Download
memory/4088-29-0x0000023A15490000-0x0000023A15506000-memory.dmp

Filesize
472KB

Download
memory/4088-31-0x0000023A2DFC0000-0x0000023A2DFDE000-memory.dmp

Filesize
120KB

Download
memory/4088-1-0x0000023A13700000-0x0000023A13740000-memory.dmp

Filesize
256KB

Download
memory/4088-0-0x00007FFBFFA13000-0x00007FFBFFA15000-memory.dmp

Filesize
8KB

Download
memory/4088-65-0x0000023A15420000-0x0000023A1542A000-memory.dmp

Filesize
40KB

Download
memory/4088-66-0x0000023A2DFA0000-0x0000023A2DFB2000-memory.dmp

Filesize
72KB

Download
memory/4088-2-0x00007FFBFFA10000-0x00007FFC004D2000-memory.dmp

Filesize
10.8MB

Download
memory/4088-83-0x00007FFBFFA10000-0x00007FFC004D2000-memory.dmp

Filesize
10.8MB

Download