umbral | 70575d18c218295c13e10e6d50b48af76d00f4dd46ed0d5010aaf212b0ea61af

Analysis

max time kernel
24s
max time network
17s
platform
windows7_x64
resource
win7-20240704-en
resource tags

arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
submitted
16-08-2024 12:54

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General

Target

7bc86d2e18813d4d06d2d39894762b90N.exe
Size

229KB
MD5

7bc86d2e18813d4d06d2d39894762b90
SHA1

6203740dc4dde0290d4827f479f6d08a91a7c699
SHA256

70575d18c218295c13e10e6d50b48af76d00f4dd46ed0d5010aaf212b0ea61af
SHA512

1918500c3bed431277318d03db3a4d39c0f3a81dcc782aa60d4108e6836593d20aa22d79884e2bb54fd9bc7a63a0dcad8536156437e69f0c020b5e1ad552d685
SSDEEP

6144:9loZMhrIkd8g+EtXHkv/iD4jol1t74sz9Krd4UBwwb8e1m1i:foZiL+EP8jol1t74sz9Krd4UBVP

Score

10^/10

umbral credential_access execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/2744-1-0x0000000000E80000-0x0000000000EC0000-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
2552	powershell.exe
780	powershell.exe
2796	powershell.exe
2768	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	7bc86d2e18813d4d06d2d39894762b90N.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
8	discord.com
9	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

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
1732	wmic.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
2768	powershell.exe
2552	powershell.exe
780	powershell.exe
324	powershell.exe
2796	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2744	7bc86d2e18813d4d06d2d39894762b90N.exe
Token: SeDebugPrivilege	2768	powershell.exe
Token: SeDebugPrivilege	2552	powershell.exe
Token: SeDebugPrivilege	780	powershell.exe
Token: SeDebugPrivilege	324	powershell.exe
Token: SeIncreaseQuotaPrivilege	1264	wmic.exe
Token: SeSecurityPrivilege	1264	wmic.exe
Token: SeTakeOwnershipPrivilege	1264	wmic.exe
Token: SeLoadDriverPrivilege	1264	wmic.exe
Token: SeSystemProfilePrivilege	1264	wmic.exe
Token: SeSystemtimePrivilege	1264	wmic.exe
Token: SeProfSingleProcessPrivilege	1264	wmic.exe
Token: SeIncBasePriorityPrivilege	1264	wmic.exe
Token: SeCreatePagefilePrivilege	1264	wmic.exe
Token: SeBackupPrivilege	1264	wmic.exe
Token: SeRestorePrivilege	1264	wmic.exe
Token: SeShutdownPrivilege	1264	wmic.exe
Token: SeDebugPrivilege	1264	wmic.exe
Token: SeSystemEnvironmentPrivilege	1264	wmic.exe
Token: SeRemoteShutdownPrivilege	1264	wmic.exe
Token: SeUndockPrivilege	1264	wmic.exe
Token: SeManageVolumePrivilege	1264	wmic.exe
Token: 33	1264	wmic.exe
Token: 34	1264	wmic.exe
Token: 35	1264	wmic.exe
Token: SeIncreaseQuotaPrivilege	1264	wmic.exe
Token: SeSecurityPrivilege	1264	wmic.exe
Token: SeTakeOwnershipPrivilege	1264	wmic.exe
Token: SeLoadDriverPrivilege	1264	wmic.exe
Token: SeSystemProfilePrivilege	1264	wmic.exe
Token: SeSystemtimePrivilege	1264	wmic.exe
Token: SeProfSingleProcessPrivilege	1264	wmic.exe
Token: SeIncBasePriorityPrivilege	1264	wmic.exe
Token: SeCreatePagefilePrivilege	1264	wmic.exe
Token: SeBackupPrivilege	1264	wmic.exe
Token: SeRestorePrivilege	1264	wmic.exe
Token: SeShutdownPrivilege	1264	wmic.exe
Token: SeDebugPrivilege	1264	wmic.exe
Token: SeSystemEnvironmentPrivilege	1264	wmic.exe
Token: SeRemoteShutdownPrivilege	1264	wmic.exe
Token: SeUndockPrivilege	1264	wmic.exe
Token: SeManageVolumePrivilege	1264	wmic.exe
Token: 33	1264	wmic.exe
Token: 34	1264	wmic.exe
Token: 35	1264	wmic.exe
Token: SeIncreaseQuotaPrivilege	1976	wmic.exe
Token: SeSecurityPrivilege	1976	wmic.exe
Token: SeTakeOwnershipPrivilege	1976	wmic.exe
Token: SeLoadDriverPrivilege	1976	wmic.exe
Token: SeSystemProfilePrivilege	1976	wmic.exe
Token: SeSystemtimePrivilege	1976	wmic.exe
Token: SeProfSingleProcessPrivilege	1976	wmic.exe
Token: SeIncBasePriorityPrivilege	1976	wmic.exe
Token: SeCreatePagefilePrivilege	1976	wmic.exe
Token: SeBackupPrivilege	1976	wmic.exe
Token: SeRestorePrivilege	1976	wmic.exe
Token: SeShutdownPrivilege	1976	wmic.exe
Token: SeDebugPrivilege	1976	wmic.exe
Token: SeSystemEnvironmentPrivilege	1976	wmic.exe
Token: SeRemoteShutdownPrivilege	1976	wmic.exe
Token: SeUndockPrivilege	1976	wmic.exe
Token: SeManageVolumePrivilege	1976	wmic.exe
Token: 33	1976	wmic.exe
Token: 34	1976	wmic.exe

Suspicious use of WriteProcessMemory 27 IoCs

description	pid	Process	procid_target
PID 2744 wrote to memory of 2768	2744	7bc86d2e18813d4d06d2d39894762b90N.exe	30
PID 2744 wrote to memory of 2768	2744	7bc86d2e18813d4d06d2d39894762b90N.exe	30
PID 2744 wrote to memory of 2768	2744	7bc86d2e18813d4d06d2d39894762b90N.exe	30
PID 2744 wrote to memory of 2552	2744	7bc86d2e18813d4d06d2d39894762b90N.exe	32
PID 2744 wrote to memory of 2552	2744	7bc86d2e18813d4d06d2d39894762b90N.exe	32
PID 2744 wrote to memory of 2552	2744	7bc86d2e18813d4d06d2d39894762b90N.exe	32
PID 2744 wrote to memory of 780	2744	7bc86d2e18813d4d06d2d39894762b90N.exe	34
PID 2744 wrote to memory of 780	2744	7bc86d2e18813d4d06d2d39894762b90N.exe	34
PID 2744 wrote to memory of 780	2744	7bc86d2e18813d4d06d2d39894762b90N.exe	34
PID 2744 wrote to memory of 324	2744	7bc86d2e18813d4d06d2d39894762b90N.exe	36
PID 2744 wrote to memory of 324	2744	7bc86d2e18813d4d06d2d39894762b90N.exe	36
PID 2744 wrote to memory of 324	2744	7bc86d2e18813d4d06d2d39894762b90N.exe	36
PID 2744 wrote to memory of 1264	2744	7bc86d2e18813d4d06d2d39894762b90N.exe	38
PID 2744 wrote to memory of 1264	2744	7bc86d2e18813d4d06d2d39894762b90N.exe	38
PID 2744 wrote to memory of 1264	2744	7bc86d2e18813d4d06d2d39894762b90N.exe	38
PID 2744 wrote to memory of 1976	2744	7bc86d2e18813d4d06d2d39894762b90N.exe	41
PID 2744 wrote to memory of 1976	2744	7bc86d2e18813d4d06d2d39894762b90N.exe	41
PID 2744 wrote to memory of 1976	2744	7bc86d2e18813d4d06d2d39894762b90N.exe	41
PID 2744 wrote to memory of 1968	2744	7bc86d2e18813d4d06d2d39894762b90N.exe	43
PID 2744 wrote to memory of 1968	2744	7bc86d2e18813d4d06d2d39894762b90N.exe	43
PID 2744 wrote to memory of 1968	2744	7bc86d2e18813d4d06d2d39894762b90N.exe	43
PID 2744 wrote to memory of 2796	2744	7bc86d2e18813d4d06d2d39894762b90N.exe	45
PID 2744 wrote to memory of 2796	2744	7bc86d2e18813d4d06d2d39894762b90N.exe	45
PID 2744 wrote to memory of 2796	2744	7bc86d2e18813d4d06d2d39894762b90N.exe	45
PID 2744 wrote to memory of 1732	2744	7bc86d2e18813d4d06d2d39894762b90N.exe	47
PID 2744 wrote to memory of 1732	2744	7bc86d2e18813d4d06d2d39894762b90N.exe	47
PID 2744 wrote to memory of 1732	2744	7bc86d2e18813d4d06d2d39894762b90N.exe	47

C:\Users\Admin\AppData\Local\Temp\7bc86d2e18813d4d06d2d39894762b90N.exe
"C:\Users\Admin\AppData\Local\Temp\7bc86d2e18813d4d06d2d39894762b90N.exe"
1⤵
- Drops file in Drivers directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2744
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\7bc86d2e18813d4d06d2d39894762b90N.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2768
- 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:2552
- 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:780
- 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:324
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1264
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1976
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:1968
- 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:2796
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:1732

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\Roaming\Microsoft\Windows\Recent\CustomDestinations\TENL1DOXNE5S49EY0PQM.temp

Filesize
7KB

MD5
c51b15a2575c7569e003f2915e08aed7

SHA1
0b5d52abe020a3c94a5227543dcdb9332cab00e9

SHA256
ab228303c28e74aeb9fe474b826ae4c07910f0d58abf385164093273dafa53c9

SHA512
38e0ed86a0ab165b116708bb1beb871f0f234f375da1d96d7bd630989bbb4591effa9cc03e14549c248d1957e7688b05e7aeddadb326302b48eb96ebeb7ca8fa

Download Submit
memory/2552-19-0x0000000002310000-0x0000000002318000-memory.dmp

Filesize
32KB

Download
memory/2552-18-0x000000001B770000-0x000000001BA52000-memory.dmp

Filesize
2.9MB

Download
memory/2744-1-0x0000000000E80000-0x0000000000EC0000-memory.dmp

Filesize
256KB

Download
memory/2744-2-0x000007FEF5A80000-0x000007FEF646C000-memory.dmp

Filesize
9.9MB

Download
memory/2744-47-0x000007FEF5A80000-0x000007FEF646C000-memory.dmp

Filesize
9.9MB

Download
memory/2744-0-0x000007FEF5A83000-0x000007FEF5A84000-memory.dmp

Filesize
4KB

Download
memory/2768-8-0x000000001B650000-0x000000001B932000-memory.dmp

Filesize
2.9MB

Download
memory/2768-12-0x000007FEED610000-0x000007FEEDFAD000-memory.dmp

Filesize
9.6MB

Download
memory/2768-11-0x000000000275B000-0x00000000027C2000-memory.dmp

Filesize
412KB

Download
memory/2768-10-0x0000000002754000-0x0000000002757000-memory.dmp

Filesize
12KB

Download
memory/2768-9-0x0000000002860000-0x0000000002868000-memory.dmp

Filesize
32KB

Download
memory/2768-7-0x000007FEED8CE000-0x000007FEED8CF000-memory.dmp

Filesize
4KB

Download
memory/2768-48-0x000007FEED610000-0x000007FEEDFAD000-memory.dmp

Filesize
9.6MB

Download
memory/2796-43-0x000000001B4B0000-0x000000001B792000-memory.dmp

Filesize
2.9MB

Download