umbral | 1ab54a5786eeedb01e74215a50a796fefbd12c47c0b864b1be5f6d45a2951bf4

Analysis

max time kernel
44s
max time network
43s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
08-08-2024 16:31

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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
behavioral1/memory/3812-0-0x000001F0BD760000-0x000001F0BD7A0000-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

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
2440	powershell.exe
4312	powershell.exe
3644	powershell.exe
3352	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
25	discord.com
26	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
22	ip-api.com

Checks SCSI registry key(s) 3 TTPs 3 IoCs

SCSI information is often read in order to detect sandboxing environments.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_WDC&Prod_WDS100T2B0A\4&215468a5&0&000000	taskmgr.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_WDC&Prod_WDS100T2B0A\4&215468a5&0&000000\Properties\{b725f130-47ef-101a-a5f1-02608c9eebac}\000A	taskmgr.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_WDC&Prod_WDS100T2B0A\4&215468a5&0&000000\FriendlyName	taskmgr.exe

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
1464	wmic.exe

Suspicious behavior: EnumeratesProcesses 42 IoCs

pid	Process
3352	powershell.exe
3352	powershell.exe
2440	powershell.exe
2440	powershell.exe
4312	powershell.exe
4312	powershell.exe
2816	powershell.exe
2816	powershell.exe
3644	powershell.exe
3644	powershell.exe
3156	taskmgr.exe
3156	taskmgr.exe
3156	taskmgr.exe
3156	taskmgr.exe
3156	taskmgr.exe
3156	taskmgr.exe
3156	taskmgr.exe
3156	taskmgr.exe
3156	taskmgr.exe
3156	taskmgr.exe
3156	taskmgr.exe
3156	taskmgr.exe
3156	taskmgr.exe
3156	taskmgr.exe
3156	taskmgr.exe
3156	taskmgr.exe
3156	taskmgr.exe
3156	taskmgr.exe
3156	taskmgr.exe
3156	taskmgr.exe
3156	taskmgr.exe
3156	taskmgr.exe
3156	taskmgr.exe
3156	taskmgr.exe
3156	taskmgr.exe
3156	taskmgr.exe
3156	taskmgr.exe
3156	taskmgr.exe
3156	taskmgr.exe
3156	taskmgr.exe
3156	taskmgr.exe
3156	taskmgr.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	3812	uhm, uhh.exe
Token: SeDebugPrivilege	3352	powershell.exe
Token: SeDebugPrivilege	2440	powershell.exe
Token: SeDebugPrivilege	4312	powershell.exe
Token: SeDebugPrivilege	2816	powershell.exe
Token: SeIncreaseQuotaPrivilege	5024	wmic.exe
Token: SeSecurityPrivilege	5024	wmic.exe
Token: SeTakeOwnershipPrivilege	5024	wmic.exe
Token: SeLoadDriverPrivilege	5024	wmic.exe
Token: SeSystemProfilePrivilege	5024	wmic.exe
Token: SeSystemtimePrivilege	5024	wmic.exe
Token: SeProfSingleProcessPrivilege	5024	wmic.exe
Token: SeIncBasePriorityPrivilege	5024	wmic.exe
Token: SeCreatePagefilePrivilege	5024	wmic.exe
Token: SeBackupPrivilege	5024	wmic.exe
Token: SeRestorePrivilege	5024	wmic.exe
Token: SeShutdownPrivilege	5024	wmic.exe
Token: SeDebugPrivilege	5024	wmic.exe
Token: SeSystemEnvironmentPrivilege	5024	wmic.exe
Token: SeRemoteShutdownPrivilege	5024	wmic.exe
Token: SeUndockPrivilege	5024	wmic.exe
Token: SeManageVolumePrivilege	5024	wmic.exe
Token: 33	5024	wmic.exe
Token: 34	5024	wmic.exe
Token: 35	5024	wmic.exe
Token: 36	5024	wmic.exe
Token: SeIncreaseQuotaPrivilege	5024	wmic.exe
Token: SeSecurityPrivilege	5024	wmic.exe
Token: SeTakeOwnershipPrivilege	5024	wmic.exe
Token: SeLoadDriverPrivilege	5024	wmic.exe
Token: SeSystemProfilePrivilege	5024	wmic.exe
Token: SeSystemtimePrivilege	5024	wmic.exe
Token: SeProfSingleProcessPrivilege	5024	wmic.exe
Token: SeIncBasePriorityPrivilege	5024	wmic.exe
Token: SeCreatePagefilePrivilege	5024	wmic.exe
Token: SeBackupPrivilege	5024	wmic.exe
Token: SeRestorePrivilege	5024	wmic.exe
Token: SeShutdownPrivilege	5024	wmic.exe
Token: SeDebugPrivilege	5024	wmic.exe
Token: SeSystemEnvironmentPrivilege	5024	wmic.exe
Token: SeRemoteShutdownPrivilege	5024	wmic.exe
Token: SeUndockPrivilege	5024	wmic.exe
Token: SeManageVolumePrivilege	5024	wmic.exe
Token: 33	5024	wmic.exe
Token: 34	5024	wmic.exe
Token: 35	5024	wmic.exe
Token: 36	5024	wmic.exe
Token: SeIncreaseQuotaPrivilege	2964	wmic.exe
Token: SeSecurityPrivilege	2964	wmic.exe
Token: SeTakeOwnershipPrivilege	2964	wmic.exe
Token: SeLoadDriverPrivilege	2964	wmic.exe
Token: SeSystemProfilePrivilege	2964	wmic.exe
Token: SeSystemtimePrivilege	2964	wmic.exe
Token: SeProfSingleProcessPrivilege	2964	wmic.exe
Token: SeIncBasePriorityPrivilege	2964	wmic.exe
Token: SeCreatePagefilePrivilege	2964	wmic.exe
Token: SeBackupPrivilege	2964	wmic.exe
Token: SeRestorePrivilege	2964	wmic.exe
Token: SeShutdownPrivilege	2964	wmic.exe
Token: SeDebugPrivilege	2964	wmic.exe
Token: SeSystemEnvironmentPrivilege	2964	wmic.exe
Token: SeRemoteShutdownPrivilege	2964	wmic.exe
Token: SeUndockPrivilege	2964	wmic.exe
Token: SeManageVolumePrivilege	2964	wmic.exe

Suspicious use of FindShellTrayWindow 44 IoCs

pid	Process
3156	taskmgr.exe
3156	taskmgr.exe
3156	taskmgr.exe
3156	taskmgr.exe
3156	taskmgr.exe
3156	taskmgr.exe
3156	taskmgr.exe
3156	taskmgr.exe
3156	taskmgr.exe
3156	taskmgr.exe
3156	taskmgr.exe
3156	taskmgr.exe
3156	taskmgr.exe
3156	taskmgr.exe
3156	taskmgr.exe
3156	taskmgr.exe
3156	taskmgr.exe
3156	taskmgr.exe
3156	taskmgr.exe
3156	taskmgr.exe
3156	taskmgr.exe
3156	taskmgr.exe
3156	taskmgr.exe
3156	taskmgr.exe
3156	taskmgr.exe
3156	taskmgr.exe
3156	taskmgr.exe
3156	taskmgr.exe
3156	taskmgr.exe
3156	taskmgr.exe
3156	taskmgr.exe
3156	taskmgr.exe
3156	taskmgr.exe
3156	taskmgr.exe
3156	taskmgr.exe
3156	taskmgr.exe
3156	taskmgr.exe
3156	taskmgr.exe
3156	taskmgr.exe
3156	taskmgr.exe
3156	taskmgr.exe
3156	taskmgr.exe
3156	taskmgr.exe
3156	taskmgr.exe

Suspicious use of SendNotifyMessage 44 IoCs

pid	Process
3156	taskmgr.exe
3156	taskmgr.exe
3156	taskmgr.exe
3156	taskmgr.exe
3156	taskmgr.exe
3156	taskmgr.exe
3156	taskmgr.exe
3156	taskmgr.exe
3156	taskmgr.exe
3156	taskmgr.exe
3156	taskmgr.exe
3156	taskmgr.exe
3156	taskmgr.exe
3156	taskmgr.exe
3156	taskmgr.exe
3156	taskmgr.exe
3156	taskmgr.exe
3156	taskmgr.exe
3156	taskmgr.exe
3156	taskmgr.exe
3156	taskmgr.exe
3156	taskmgr.exe
3156	taskmgr.exe
3156	taskmgr.exe
3156	taskmgr.exe
3156	taskmgr.exe
3156	taskmgr.exe
3156	taskmgr.exe
3156	taskmgr.exe
3156	taskmgr.exe
3156	taskmgr.exe
3156	taskmgr.exe
3156	taskmgr.exe
3156	taskmgr.exe
3156	taskmgr.exe
3156	taskmgr.exe
3156	taskmgr.exe
3156	taskmgr.exe
3156	taskmgr.exe
3156	taskmgr.exe
3156	taskmgr.exe
3156	taskmgr.exe
3156	taskmgr.exe
3156	taskmgr.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 3812 wrote to memory of 3352	3812	uhm, uhh.exe	86
PID 3812 wrote to memory of 3352	3812	uhm, uhh.exe	86
PID 3812 wrote to memory of 2440	3812	uhm, uhh.exe	91
PID 3812 wrote to memory of 2440	3812	uhm, uhh.exe	91
PID 3812 wrote to memory of 4312	3812	uhm, uhh.exe	93
PID 3812 wrote to memory of 4312	3812	uhm, uhh.exe	93
PID 3812 wrote to memory of 2816	3812	uhm, uhh.exe	95
PID 3812 wrote to memory of 2816	3812	uhm, uhh.exe	95
PID 3812 wrote to memory of 5024	3812	uhm, uhh.exe	97
PID 3812 wrote to memory of 5024	3812	uhm, uhh.exe	97
PID 3812 wrote to memory of 2964	3812	uhm, uhh.exe	100
PID 3812 wrote to memory of 2964	3812	uhm, uhh.exe	100
PID 3812 wrote to memory of 1180	3812	uhm, uhh.exe	102
PID 3812 wrote to memory of 1180	3812	uhm, uhh.exe	102
PID 3812 wrote to memory of 3644	3812	uhm, uhh.exe	104
PID 3812 wrote to memory of 3644	3812	uhm, uhh.exe	104
PID 3812 wrote to memory of 1464	3812	uhm, uhh.exe	106
PID 3812 wrote to memory of 1464	3812	uhm, uhh.exe	106

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:3812
- 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:3352
- 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:2440
- 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:4312
- 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:2816
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:5024
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2964
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:1180
- 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:3644
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:1464

C:\Windows\system32\taskmgr.exe
"C:\Windows\system32\taskmgr.exe" /7
1⤵
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
PID:3156

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

Peripheral Device Discovery

T1120

Query Registry

T1012

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
d85ba6ff808d9e5444a4b369f5bc2730

SHA1
31aa9d96590fff6981b315e0b391b575e4c0804a

SHA256
84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f

SHA512
8c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249

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

Filesize
944B

MD5
d28a889fd956d5cb3accfbaf1143eb6f

SHA1
157ba54b365341f8ff06707d996b3635da8446f7

SHA256
21e5d7ccf80a293e6ba30ed728846ca19c929c52b96e2c8d34e27cd2234f1d45

SHA512
0b6d88deb9be85722e6a78d5886d49f2caf407a59e128d2b4ed74c1356f9928c40048a62731959f2460e9ff9d9feee311043d2a37abe3bb92c2b76a44281478c

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

Filesize
948B

MD5
df6c4e5c3091c14551e6c92f07717617

SHA1
1ea87111035496c1b2b74cef8b5c62d00ac072c9

SHA256
b79dc75372707ff84a643a9e4cff6fad2d1a936b54d458088850c62c96e2f231

SHA512
ab861efd0ff28a4bae3513a884d5b00c1b68d8f0bd54a00428bbb65a6954f8778e8f5300362025265251cb425c5ed77608b10776f382c3b392916ae46e38db35

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

Filesize
1KB

MD5
276798eeb29a49dc6e199768bc9c2e71

SHA1
5fdc8ccb897ac2df7476fbb07517aca5b7a6205b

SHA256
cd0a1056e8f1b6cb5cb328532239d802f4e2aa8f8fcdc0fcb487684bd68e0dcc

SHA512
0d34fce64bbefc57d64fa6e03ca886952263d5f24df9c1c4cce6a1e8f5a47a9a21e9820f8d38caa7f7b43a52336ce00b738ea18419aaa7c788b72e04ce19e4f2

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

Filesize
1KB

MD5
ad92ddd414c9d1f700f4cefc43a47923

SHA1
8a5d0703fc26509c6033d662b4d4cbf92ec11ba0

SHA256
e91611732f1cf02bf96d9931d4e1659ac5103b2a8b0a951d4b1556d701cb9be7

SHA512
8f135c7073d978d6d6ce09f3c086ee6a008f4cc4f2b0d8a631b9d1cd641beee9b028a5431f6fbfed8b8ac1cca651cd46af57f8321b6338176b47f21b4bb91123

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_zv5f2cpx.loe.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/3156-90-0x000001E3B0090000-0x000001E3B0091000-memory.dmp

Filesize
4KB

Download
memory/3156-102-0x000001E3B0090000-0x000001E3B0091000-memory.dmp

Filesize
4KB

Download
memory/3156-91-0x000001E3B0090000-0x000001E3B0091000-memory.dmp

Filesize
4KB

Download
memory/3156-98-0x000001E3B0090000-0x000001E3B0091000-memory.dmp

Filesize
4KB

Download
memory/3156-92-0x000001E3B0090000-0x000001E3B0091000-memory.dmp

Filesize
4KB

Download
memory/3156-99-0x000001E3B0090000-0x000001E3B0091000-memory.dmp

Filesize
4KB

Download
memory/3156-100-0x000001E3B0090000-0x000001E3B0091000-memory.dmp

Filesize
4KB

Download
memory/3156-97-0x000001E3B0090000-0x000001E3B0091000-memory.dmp

Filesize
4KB

Download
memory/3156-96-0x000001E3B0090000-0x000001E3B0091000-memory.dmp

Filesize
4KB

Download
memory/3156-101-0x000001E3B0090000-0x000001E3B0091000-memory.dmp

Filesize
4KB

Download
memory/3352-13-0x00007FFE505C0000-0x00007FFE51081000-memory.dmp

Filesize
10.8MB

Download
memory/3352-12-0x000002DF78DC0000-0x000002DF78DE2000-memory.dmp

Filesize
136KB

Download
memory/3352-15-0x00007FFE505C0000-0x00007FFE51081000-memory.dmp

Filesize
10.8MB

Download
memory/3352-14-0x00007FFE505C0000-0x00007FFE51081000-memory.dmp

Filesize
10.8MB

Download
memory/3352-18-0x00007FFE505C0000-0x00007FFE51081000-memory.dmp

Filesize
10.8MB

Download
memory/3812-33-0x000001F0BF3C0000-0x000001F0BF3DE000-memory.dmp

Filesize
120KB

Download
memory/3812-0-0x000001F0BD760000-0x000001F0BD7A0000-memory.dmp

Filesize
256KB

Download
memory/3812-89-0x00007FFE505C0000-0x00007FFE51081000-memory.dmp

Filesize
10.8MB

Download
memory/3812-88-0x000001F0D8070000-0x000001F0D8219000-memory.dmp

Filesize
1.7MB

Download
memory/3812-1-0x00007FFE505C3000-0x00007FFE505C5000-memory.dmp

Filesize
8KB

Download
memory/3812-70-0x000001F0D7F70000-0x000001F0D7F82000-memory.dmp

Filesize
72KB

Download
memory/3812-69-0x000001F0BF460000-0x000001F0BF46A000-memory.dmp

Filesize
40KB

Download
memory/3812-2-0x00007FFE505C0000-0x00007FFE51081000-memory.dmp

Filesize
10.8MB

Download
memory/3812-32-0x000001F0BF3F0000-0x000001F0BF440000-memory.dmp

Filesize
320KB

Download
memory/3812-31-0x000001F0D7EC0000-0x000001F0D7F36000-memory.dmp

Filesize
472KB

Download