umbral | f2ee9f8cda21c09cf9351463d0cc4dbe1d11ae8dadd8ebfc160ac436d186265e

Analysis

max time kernel
93s
max time network
95s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
04-08-2024 11:57

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General

Target

ogasda.exe
Size

229KB
MD5

33a10c04946e6aebc438b7cba8b42140
SHA1

f4b94c6914cabde06072676547af27d1864373e6
SHA256

f2ee9f8cda21c09cf9351463d0cc4dbe1d11ae8dadd8ebfc160ac436d186265e
SHA512

39d288585b07eb81d82ba4f7b475782223b141804e2d1d5c2dae3077f6b7cb2f7778b36e1aa77388ac60fd9a6998b70fe5e99ff302dc23f5ca10c8c373212f1a
SSDEEP

6144:lloZMCrIkd8g+EtXHkv/iD4ZeBZAmB5Kh/Cwhl0YSb8e1m6oOUi:noZZL+EP8ZeBZAmB5Kh/Cwhl0H9

Score

10^/10

umbral credential_access execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral2/memory/2120-1-0x000001554D040000-0x000001554D080000-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
2040	powershell.exe
2476	powershell.exe
1468	powershell.exe
1564	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
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
2144	wmic.exe

Suspicious behavior: EnumeratesProcesses 10 IoCs

pid	Process
2040	powershell.exe
2040	powershell.exe
2476	powershell.exe
2476	powershell.exe
1468	powershell.exe
1468	powershell.exe
1428	powershell.exe
1428	powershell.exe
1564	powershell.exe
1564	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2120	ogasda.exe
Token: SeDebugPrivilege	2040	powershell.exe
Token: SeDebugPrivilege	2476	powershell.exe
Token: SeDebugPrivilege	1468	powershell.exe
Token: SeDebugPrivilege	1428	powershell.exe
Token: SeIncreaseQuotaPrivilege	676	wmic.exe
Token: SeSecurityPrivilege	676	wmic.exe
Token: SeTakeOwnershipPrivilege	676	wmic.exe
Token: SeLoadDriverPrivilege	676	wmic.exe
Token: SeSystemProfilePrivilege	676	wmic.exe
Token: SeSystemtimePrivilege	676	wmic.exe
Token: SeProfSingleProcessPrivilege	676	wmic.exe
Token: SeIncBasePriorityPrivilege	676	wmic.exe
Token: SeCreatePagefilePrivilege	676	wmic.exe
Token: SeBackupPrivilege	676	wmic.exe
Token: SeRestorePrivilege	676	wmic.exe
Token: SeShutdownPrivilege	676	wmic.exe
Token: SeDebugPrivilege	676	wmic.exe
Token: SeSystemEnvironmentPrivilege	676	wmic.exe
Token: SeRemoteShutdownPrivilege	676	wmic.exe
Token: SeUndockPrivilege	676	wmic.exe
Token: SeManageVolumePrivilege	676	wmic.exe
Token: 33	676	wmic.exe
Token: 34	676	wmic.exe
Token: 35	676	wmic.exe
Token: 36	676	wmic.exe
Token: SeIncreaseQuotaPrivilege	676	wmic.exe
Token: SeSecurityPrivilege	676	wmic.exe
Token: SeTakeOwnershipPrivilege	676	wmic.exe
Token: SeLoadDriverPrivilege	676	wmic.exe
Token: SeSystemProfilePrivilege	676	wmic.exe
Token: SeSystemtimePrivilege	676	wmic.exe
Token: SeProfSingleProcessPrivilege	676	wmic.exe
Token: SeIncBasePriorityPrivilege	676	wmic.exe
Token: SeCreatePagefilePrivilege	676	wmic.exe
Token: SeBackupPrivilege	676	wmic.exe
Token: SeRestorePrivilege	676	wmic.exe
Token: SeShutdownPrivilege	676	wmic.exe
Token: SeDebugPrivilege	676	wmic.exe
Token: SeSystemEnvironmentPrivilege	676	wmic.exe
Token: SeRemoteShutdownPrivilege	676	wmic.exe
Token: SeUndockPrivilege	676	wmic.exe
Token: SeManageVolumePrivilege	676	wmic.exe
Token: 33	676	wmic.exe
Token: 34	676	wmic.exe
Token: 35	676	wmic.exe
Token: 36	676	wmic.exe
Token: SeIncreaseQuotaPrivilege	4568	wmic.exe
Token: SeSecurityPrivilege	4568	wmic.exe
Token: SeTakeOwnershipPrivilege	4568	wmic.exe
Token: SeLoadDriverPrivilege	4568	wmic.exe
Token: SeSystemProfilePrivilege	4568	wmic.exe
Token: SeSystemtimePrivilege	4568	wmic.exe
Token: SeProfSingleProcessPrivilege	4568	wmic.exe
Token: SeIncBasePriorityPrivilege	4568	wmic.exe
Token: SeCreatePagefilePrivilege	4568	wmic.exe
Token: SeBackupPrivilege	4568	wmic.exe
Token: SeRestorePrivilege	4568	wmic.exe
Token: SeShutdownPrivilege	4568	wmic.exe
Token: SeDebugPrivilege	4568	wmic.exe
Token: SeSystemEnvironmentPrivilege	4568	wmic.exe
Token: SeRemoteShutdownPrivilege	4568	wmic.exe
Token: SeUndockPrivilege	4568	wmic.exe
Token: SeManageVolumePrivilege	4568	wmic.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 2120 wrote to memory of 2040	2120	ogasda.exe	85
PID 2120 wrote to memory of 2040	2120	ogasda.exe	85
PID 2120 wrote to memory of 2476	2120	ogasda.exe	88
PID 2120 wrote to memory of 2476	2120	ogasda.exe	88
PID 2120 wrote to memory of 1468	2120	ogasda.exe	90
PID 2120 wrote to memory of 1468	2120	ogasda.exe	90
PID 2120 wrote to memory of 1428	2120	ogasda.exe	92
PID 2120 wrote to memory of 1428	2120	ogasda.exe	92
PID 2120 wrote to memory of 676	2120	ogasda.exe	94
PID 2120 wrote to memory of 676	2120	ogasda.exe	94
PID 2120 wrote to memory of 4568	2120	ogasda.exe	97
PID 2120 wrote to memory of 4568	2120	ogasda.exe	97
PID 2120 wrote to memory of 5116	2120	ogasda.exe	99
PID 2120 wrote to memory of 5116	2120	ogasda.exe	99
PID 2120 wrote to memory of 1564	2120	ogasda.exe	101
PID 2120 wrote to memory of 1564	2120	ogasda.exe	101
PID 2120 wrote to memory of 2144	2120	ogasda.exe	103
PID 2120 wrote to memory of 2144	2120	ogasda.exe	103

C:\Users\Admin\AppData\Local\Temp\ogasda.exe
"C:\Users\Admin\AppData\Local\Temp\ogasda.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2120
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\ogasda.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2040
- 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:2476
- 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:1468
- 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:1428
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:676
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:4568
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:5116
- 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:1564
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:2144

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
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
966914e2e771de7a4a57a95b6ecfa8a9

SHA1
7a32282fd51dd032967ed4d9a40cc57e265aeff2

SHA256
98d3c70d7004fa807897317bd6cd3e977b9b6c72d4d2565aca0f9f8b1c315cba

SHA512
dc39c7124a9c7c8d4c7e8e16290c46360b8d9a8f4e43edaacbbeb09bdcf20159a53db54d2b322372001b6a3de52b2f88e9088b5fdbc7638816ae0d122bb015f5

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

Filesize
1KB

MD5
f1d680fc60cb57cf1ef932df1ffb00ce

SHA1
1418fbdf28a13aabe9afeb2dbacbafa609dc7a69

SHA256
50fb1e22f285507081a03d3e98baaee9d50338a21f29b5051c68608df08f78d2

SHA512
5320724ccf994430d84d6f442337bc19a0bc805d2247218b5802157aeb8f23b76b56094bd76a85c0b3664e8df3d9beaf6171a596c30d05afd2b1784d7a5beccf

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

Filesize
1KB

MD5
2984662ba3f86d7fcf26758b5b76754d

SHA1
bc2a43ffd898222ee84406313f3834f226928379

SHA256
f0815f797b0c1829745dd65985f28d459688f91ceb2f3d76fed2d4309589bcde

SHA512
a06251a7a14559ebf5627a3c6b03fda9ded1d4ee44991283c824ccf5011cdf67665696d2d9b23507cbb3e3b9943b9e9f79ef28d3657eb61fb99920225417ab11

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_phakruaz.eqw.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/2040-3-0x000002305EAC0000-0x000002305EAE2000-memory.dmp

Filesize
136KB

Download
memory/2040-13-0x00007FFD06410000-0x00007FFD06ED1000-memory.dmp

Filesize
10.8MB

Download
memory/2040-14-0x00007FFD06410000-0x00007FFD06ED1000-memory.dmp

Filesize
10.8MB

Download
memory/2040-15-0x00007FFD06410000-0x00007FFD06ED1000-memory.dmp

Filesize
10.8MB

Download
memory/2040-18-0x00007FFD06410000-0x00007FFD06ED1000-memory.dmp

Filesize
10.8MB

Download
memory/2120-0-0x00007FFD06413000-0x00007FFD06415000-memory.dmp

Filesize
8KB

Download
memory/2120-32-0x00000155677E0000-0x0000015567856000-memory.dmp

Filesize
472KB

Download
memory/2120-33-0x0000015567500000-0x0000015567550000-memory.dmp

Filesize
320KB

Download
memory/2120-34-0x00000155674B0000-0x00000155674CE000-memory.dmp

Filesize
120KB

Download
memory/2120-1-0x000001554D040000-0x000001554D080000-memory.dmp

Filesize
256KB

Download
memory/2120-70-0x00000155674E0000-0x00000155674EA000-memory.dmp

Filesize
40KB

Download
memory/2120-71-0x0000015567A10000-0x0000015567A22000-memory.dmp

Filesize
72KB

Download
memory/2120-2-0x00007FFD06410000-0x00007FFD06ED1000-memory.dmp

Filesize
10.8MB

Download
memory/2120-89-0x0000015567860000-0x0000015567A09000-memory.dmp

Filesize
1.7MB

Download
memory/2120-90-0x00007FFD06410000-0x00007FFD06ED1000-memory.dmp

Filesize
10.8MB

Download
memory/2476-31-0x0000019B2F530000-0x0000019B2F74C000-memory.dmp

Filesize
2.1MB

Download