umbral | 3fa004ae1034e479a4c536a09468edbc5e55271c7833d6768252a1f7aa1ec3ea

Analysis

max time kernel
121s
max time network
121s
platform
windows7_x64
resource
win7-20240705-en
resource tags

arch:x64arch:x86image:win7-20240705-enlocale:en-usos:windows7-x64system
submitted
02-09-2024 20:58

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General

Target

3fa004ae1034e479a4c536a09468edbc5e55271c7833d6768252a1f7aa1ec3ea.exe
Size

229KB
MD5

8887b7baff5156a22acd0a8f5f59d606
SHA1

a77181461892efdd781892b9b676a78fce0615ae
SHA256

3fa004ae1034e479a4c536a09468edbc5e55271c7833d6768252a1f7aa1ec3ea
SHA512

0f0f2055533ae30088a1daeb30aee278bc3c4e2f319dbd2f436880b6386774535a7e30ae964cf09ad6dd8f5038bba0a1c6abf919c5c4e223ebf58c9dcf629a0b
SSDEEP

6144:FloZM+rIkd8g+EtXHkv/iD4HzVViAfbopxUyzzql8rb8e1mTi:HoZtL+EP8HzVViAfbopxUyzzqo9

Score

10^/10

umbral credential_access discovery execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/2040-1-0x00000000009C0000-0x0000000000A00000-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
3032	powershell.exe
2656	powershell.exe
2688	powershell.exe
1340	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	3fa004ae1034e479a4c536a09468edbc5e55271c7833d6768252a1f7aa1ec3ea.exe

Deletes itself 1 IoCs

pid	Process
3012	cmd.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
10	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
2148	PING.EXE
3012	cmd.exe

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
2592	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2148	PING.EXE

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2040	3fa004ae1034e479a4c536a09468edbc5e55271c7833d6768252a1f7aa1ec3ea.exe
3032	powershell.exe
2656	powershell.exe
2688	powershell.exe
2280	powershell.exe
1340	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2040	3fa004ae1034e479a4c536a09468edbc5e55271c7833d6768252a1f7aa1ec3ea.exe
Token: SeIncreaseQuotaPrivilege	2924	wmic.exe
Token: SeSecurityPrivilege	2924	wmic.exe
Token: SeTakeOwnershipPrivilege	2924	wmic.exe
Token: SeLoadDriverPrivilege	2924	wmic.exe
Token: SeSystemProfilePrivilege	2924	wmic.exe
Token: SeSystemtimePrivilege	2924	wmic.exe
Token: SeProfSingleProcessPrivilege	2924	wmic.exe
Token: SeIncBasePriorityPrivilege	2924	wmic.exe
Token: SeCreatePagefilePrivilege	2924	wmic.exe
Token: SeBackupPrivilege	2924	wmic.exe
Token: SeRestorePrivilege	2924	wmic.exe
Token: SeShutdownPrivilege	2924	wmic.exe
Token: SeDebugPrivilege	2924	wmic.exe
Token: SeSystemEnvironmentPrivilege	2924	wmic.exe
Token: SeRemoteShutdownPrivilege	2924	wmic.exe
Token: SeUndockPrivilege	2924	wmic.exe
Token: SeManageVolumePrivilege	2924	wmic.exe
Token: 33	2924	wmic.exe
Token: 34	2924	wmic.exe
Token: 35	2924	wmic.exe
Token: SeIncreaseQuotaPrivilege	2924	wmic.exe
Token: SeSecurityPrivilege	2924	wmic.exe
Token: SeTakeOwnershipPrivilege	2924	wmic.exe
Token: SeLoadDriverPrivilege	2924	wmic.exe
Token: SeSystemProfilePrivilege	2924	wmic.exe
Token: SeSystemtimePrivilege	2924	wmic.exe
Token: SeProfSingleProcessPrivilege	2924	wmic.exe
Token: SeIncBasePriorityPrivilege	2924	wmic.exe
Token: SeCreatePagefilePrivilege	2924	wmic.exe
Token: SeBackupPrivilege	2924	wmic.exe
Token: SeRestorePrivilege	2924	wmic.exe
Token: SeShutdownPrivilege	2924	wmic.exe
Token: SeDebugPrivilege	2924	wmic.exe
Token: SeSystemEnvironmentPrivilege	2924	wmic.exe
Token: SeRemoteShutdownPrivilege	2924	wmic.exe
Token: SeUndockPrivilege	2924	wmic.exe
Token: SeManageVolumePrivilege	2924	wmic.exe
Token: 33	2924	wmic.exe
Token: 34	2924	wmic.exe
Token: 35	2924	wmic.exe
Token: SeDebugPrivilege	3032	powershell.exe
Token: SeDebugPrivilege	2656	powershell.exe
Token: SeDebugPrivilege	2688	powershell.exe
Token: SeDebugPrivilege	2280	powershell.exe
Token: SeIncreaseQuotaPrivilege	292	wmic.exe
Token: SeSecurityPrivilege	292	wmic.exe
Token: SeTakeOwnershipPrivilege	292	wmic.exe
Token: SeLoadDriverPrivilege	292	wmic.exe
Token: SeSystemProfilePrivilege	292	wmic.exe
Token: SeSystemtimePrivilege	292	wmic.exe
Token: SeProfSingleProcessPrivilege	292	wmic.exe
Token: SeIncBasePriorityPrivilege	292	wmic.exe
Token: SeCreatePagefilePrivilege	292	wmic.exe
Token: SeBackupPrivilege	292	wmic.exe
Token: SeRestorePrivilege	292	wmic.exe
Token: SeShutdownPrivilege	292	wmic.exe
Token: SeDebugPrivilege	292	wmic.exe
Token: SeSystemEnvironmentPrivilege	292	wmic.exe
Token: SeRemoteShutdownPrivilege	292	wmic.exe
Token: SeUndockPrivilege	292	wmic.exe
Token: SeManageVolumePrivilege	292	wmic.exe
Token: 33	292	wmic.exe
Token: 34	292	wmic.exe

Suspicious use of WriteProcessMemory 39 IoCs

description	pid	Process	procid_target
PID 2040 wrote to memory of 2924	2040	3fa004ae1034e479a4c536a09468edbc5e55271c7833d6768252a1f7aa1ec3ea.exe	30
PID 2040 wrote to memory of 2924	2040	3fa004ae1034e479a4c536a09468edbc5e55271c7833d6768252a1f7aa1ec3ea.exe	30
PID 2040 wrote to memory of 2924	2040	3fa004ae1034e479a4c536a09468edbc5e55271c7833d6768252a1f7aa1ec3ea.exe	30
PID 2040 wrote to memory of 3064	2040	3fa004ae1034e479a4c536a09468edbc5e55271c7833d6768252a1f7aa1ec3ea.exe	33
PID 2040 wrote to memory of 3064	2040	3fa004ae1034e479a4c536a09468edbc5e55271c7833d6768252a1f7aa1ec3ea.exe	33
PID 2040 wrote to memory of 3064	2040	3fa004ae1034e479a4c536a09468edbc5e55271c7833d6768252a1f7aa1ec3ea.exe	33
PID 2040 wrote to memory of 3032	2040	3fa004ae1034e479a4c536a09468edbc5e55271c7833d6768252a1f7aa1ec3ea.exe	35
PID 2040 wrote to memory of 3032	2040	3fa004ae1034e479a4c536a09468edbc5e55271c7833d6768252a1f7aa1ec3ea.exe	35
PID 2040 wrote to memory of 3032	2040	3fa004ae1034e479a4c536a09468edbc5e55271c7833d6768252a1f7aa1ec3ea.exe	35
PID 2040 wrote to memory of 2656	2040	3fa004ae1034e479a4c536a09468edbc5e55271c7833d6768252a1f7aa1ec3ea.exe	37
PID 2040 wrote to memory of 2656	2040	3fa004ae1034e479a4c536a09468edbc5e55271c7833d6768252a1f7aa1ec3ea.exe	37
PID 2040 wrote to memory of 2656	2040	3fa004ae1034e479a4c536a09468edbc5e55271c7833d6768252a1f7aa1ec3ea.exe	37
PID 2040 wrote to memory of 2688	2040	3fa004ae1034e479a4c536a09468edbc5e55271c7833d6768252a1f7aa1ec3ea.exe	39
PID 2040 wrote to memory of 2688	2040	3fa004ae1034e479a4c536a09468edbc5e55271c7833d6768252a1f7aa1ec3ea.exe	39
PID 2040 wrote to memory of 2688	2040	3fa004ae1034e479a4c536a09468edbc5e55271c7833d6768252a1f7aa1ec3ea.exe	39
PID 2040 wrote to memory of 2280	2040	3fa004ae1034e479a4c536a09468edbc5e55271c7833d6768252a1f7aa1ec3ea.exe	41
PID 2040 wrote to memory of 2280	2040	3fa004ae1034e479a4c536a09468edbc5e55271c7833d6768252a1f7aa1ec3ea.exe	41
PID 2040 wrote to memory of 2280	2040	3fa004ae1034e479a4c536a09468edbc5e55271c7833d6768252a1f7aa1ec3ea.exe	41
PID 2040 wrote to memory of 292	2040	3fa004ae1034e479a4c536a09468edbc5e55271c7833d6768252a1f7aa1ec3ea.exe	43
PID 2040 wrote to memory of 292	2040	3fa004ae1034e479a4c536a09468edbc5e55271c7833d6768252a1f7aa1ec3ea.exe	43
PID 2040 wrote to memory of 292	2040	3fa004ae1034e479a4c536a09468edbc5e55271c7833d6768252a1f7aa1ec3ea.exe	43
PID 2040 wrote to memory of 1280	2040	3fa004ae1034e479a4c536a09468edbc5e55271c7833d6768252a1f7aa1ec3ea.exe	45
PID 2040 wrote to memory of 1280	2040	3fa004ae1034e479a4c536a09468edbc5e55271c7833d6768252a1f7aa1ec3ea.exe	45
PID 2040 wrote to memory of 1280	2040	3fa004ae1034e479a4c536a09468edbc5e55271c7833d6768252a1f7aa1ec3ea.exe	45
PID 2040 wrote to memory of 1880	2040	3fa004ae1034e479a4c536a09468edbc5e55271c7833d6768252a1f7aa1ec3ea.exe	47
PID 2040 wrote to memory of 1880	2040	3fa004ae1034e479a4c536a09468edbc5e55271c7833d6768252a1f7aa1ec3ea.exe	47
PID 2040 wrote to memory of 1880	2040	3fa004ae1034e479a4c536a09468edbc5e55271c7833d6768252a1f7aa1ec3ea.exe	47
PID 2040 wrote to memory of 1340	2040	3fa004ae1034e479a4c536a09468edbc5e55271c7833d6768252a1f7aa1ec3ea.exe	49
PID 2040 wrote to memory of 1340	2040	3fa004ae1034e479a4c536a09468edbc5e55271c7833d6768252a1f7aa1ec3ea.exe	49
PID 2040 wrote to memory of 1340	2040	3fa004ae1034e479a4c536a09468edbc5e55271c7833d6768252a1f7aa1ec3ea.exe	49
PID 2040 wrote to memory of 2592	2040	3fa004ae1034e479a4c536a09468edbc5e55271c7833d6768252a1f7aa1ec3ea.exe	51
PID 2040 wrote to memory of 2592	2040	3fa004ae1034e479a4c536a09468edbc5e55271c7833d6768252a1f7aa1ec3ea.exe	51
PID 2040 wrote to memory of 2592	2040	3fa004ae1034e479a4c536a09468edbc5e55271c7833d6768252a1f7aa1ec3ea.exe	51
PID 2040 wrote to memory of 3012	2040	3fa004ae1034e479a4c536a09468edbc5e55271c7833d6768252a1f7aa1ec3ea.exe	53
PID 2040 wrote to memory of 3012	2040	3fa004ae1034e479a4c536a09468edbc5e55271c7833d6768252a1f7aa1ec3ea.exe	53
PID 2040 wrote to memory of 3012	2040	3fa004ae1034e479a4c536a09468edbc5e55271c7833d6768252a1f7aa1ec3ea.exe	53
PID 3012 wrote to memory of 2148	3012	cmd.exe	55
PID 3012 wrote to memory of 2148	3012	cmd.exe	55
PID 3012 wrote to memory of 2148	3012	cmd.exe	55

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
3064	attrib.exe

C:\Users\Admin\AppData\Local\Temp\3fa004ae1034e479a4c536a09468edbc5e55271c7833d6768252a1f7aa1ec3ea.exe
"C:\Users\Admin\AppData\Local\Temp\3fa004ae1034e479a4c536a09468edbc5e55271c7833d6768252a1f7aa1ec3ea.exe"
1⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2040
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2924
- C:\Windows\system32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\3fa004ae1034e479a4c536a09468edbc5e55271c7833d6768252a1f7aa1ec3ea.exe"
  2⤵
  - Views/modifies file attributes
  PID:3064
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\3fa004ae1034e479a4c536a09468edbc5e55271c7833d6768252a1f7aa1ec3ea.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3032
- 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:2656
- 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:2688
- 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:2280
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:292
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:1280
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:1880
- 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:1340
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:2592
- C:\Windows\system32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\3fa004ae1034e479a4c536a09468edbc5e55271c7833d6768252a1f7aa1ec3ea.exe" && pause
  2⤵
  - Deletes itself
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:3012
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:2148

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\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms

Filesize
7KB

MD5
23f4d94020238f5542766c89321e7528

SHA1
9eb084252816547885b08676679d9375ca956f9e

SHA256
9544fdfdb757656cdfdf3a8173e0ec874ab3a2b602f7af702e6bfb09b80b8f97

SHA512
cca08e9f7a5d62b6a3a057ecfcb2fe78ddafc0f386f288036e8eddd08c7aabbce7ebf6e1f516cd478f13d298fc1c5200d34c659c033d8b7e862702f050b230ba

Download Submit
memory/1340-44-0x0000000001F00000-0x0000000001F08000-memory.dmp

Filesize
32KB

Download
memory/2040-0-0x000007FEF5B33000-0x000007FEF5B34000-memory.dmp

Filesize
4KB

Download
memory/2040-1-0x00000000009C0000-0x0000000000A00000-memory.dmp

Filesize
256KB

Download
memory/2040-2-0x000007FEF5B30000-0x000007FEF651C000-memory.dmp

Filesize
9.9MB

Download
memory/2040-48-0x000007FEF5B30000-0x000007FEF651C000-memory.dmp

Filesize
9.9MB

Download
memory/2656-14-0x000000001B5D0000-0x000000001B8B2000-memory.dmp

Filesize
2.9MB

Download
memory/2656-15-0x0000000002740000-0x0000000002748000-memory.dmp

Filesize
32KB

Download
memory/3032-7-0x000000001B640000-0x000000001B922000-memory.dmp

Filesize
2.9MB

Download
memory/3032-8-0x0000000001E80000-0x0000000001E88000-memory.dmp

Filesize
32KB

Download