umbral | 5a2904a05d5d2f5d3d3ef44bdf54e74341ae9b54ba5f6545b37acf187eec4f84

Analysis

max time kernel
118s
max time network
118s
platform
windows7_x64
resource
win7-20240508-en
resource tags

arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
submitted
07-06-2024 22:13

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General

Target

fix.exe
Size

229KB
MD5

1adeea63d576dea9add98e01e9fe78b4
SHA1

8f754fd661d9ce2e9e9a7278b4dd7096b13fc585
SHA256

5a2904a05d5d2f5d3d3ef44bdf54e74341ae9b54ba5f6545b37acf187eec4f84
SHA512

0ba3c5555273a15c5406f0bd1b5f1a3888814bdbb4130f80eae1f973497c4e5d81a92ed0797a55316b358a42a955fe44f476d1e0e90c15211dc30f4dd20c58cb
SSDEEP

6144:lloZMCrIkd8g+EtXHkv/iD4sodaBPUonIWvRsY99ib8e1miLZi:noZZL+EP8sodaBPUonIWvRsY9wfLA

Score

10^/10

umbral execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/2860-1-0x0000000000BE0000-0x0000000000C20000-memory.dmp	family_umbral

Umbral
Umbral stealer is an opensource moduler stealer written in C#.
stealer umbral

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
1368	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
8	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
2408	wmic.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
1368	powershell.exe
2620	powershell.exe
2656	powershell.exe
2544	powershell.exe
1680	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2860	fix.exe
Token: SeDebugPrivilege	1368	powershell.exe
Token: SeDebugPrivilege	2620	powershell.exe
Token: SeDebugPrivilege	2656	powershell.exe
Token: SeDebugPrivilege	2544	powershell.exe
Token: SeIncreaseQuotaPrivilege	2832	wmic.exe
Token: SeSecurityPrivilege	2832	wmic.exe
Token: SeTakeOwnershipPrivilege	2832	wmic.exe
Token: SeLoadDriverPrivilege	2832	wmic.exe
Token: SeSystemProfilePrivilege	2832	wmic.exe
Token: SeSystemtimePrivilege	2832	wmic.exe
Token: SeProfSingleProcessPrivilege	2832	wmic.exe
Token: SeIncBasePriorityPrivilege	2832	wmic.exe
Token: SeCreatePagefilePrivilege	2832	wmic.exe
Token: SeBackupPrivilege	2832	wmic.exe
Token: SeRestorePrivilege	2832	wmic.exe
Token: SeShutdownPrivilege	2832	wmic.exe
Token: SeDebugPrivilege	2832	wmic.exe
Token: SeSystemEnvironmentPrivilege	2832	wmic.exe
Token: SeRemoteShutdownPrivilege	2832	wmic.exe
Token: SeUndockPrivilege	2832	wmic.exe
Token: SeManageVolumePrivilege	2832	wmic.exe
Token: 33	2832	wmic.exe
Token: 34	2832	wmic.exe
Token: 35	2832	wmic.exe
Token: SeIncreaseQuotaPrivilege	2832	wmic.exe
Token: SeSecurityPrivilege	2832	wmic.exe
Token: SeTakeOwnershipPrivilege	2832	wmic.exe
Token: SeLoadDriverPrivilege	2832	wmic.exe
Token: SeSystemProfilePrivilege	2832	wmic.exe
Token: SeSystemtimePrivilege	2832	wmic.exe
Token: SeProfSingleProcessPrivilege	2832	wmic.exe
Token: SeIncBasePriorityPrivilege	2832	wmic.exe
Token: SeCreatePagefilePrivilege	2832	wmic.exe
Token: SeBackupPrivilege	2832	wmic.exe
Token: SeRestorePrivilege	2832	wmic.exe
Token: SeShutdownPrivilege	2832	wmic.exe
Token: SeDebugPrivilege	2832	wmic.exe
Token: SeSystemEnvironmentPrivilege	2832	wmic.exe
Token: SeRemoteShutdownPrivilege	2832	wmic.exe
Token: SeUndockPrivilege	2832	wmic.exe
Token: SeManageVolumePrivilege	2832	wmic.exe
Token: 33	2832	wmic.exe
Token: 34	2832	wmic.exe
Token: 35	2832	wmic.exe
Token: SeIncreaseQuotaPrivilege	2452	wmic.exe
Token: SeSecurityPrivilege	2452	wmic.exe
Token: SeTakeOwnershipPrivilege	2452	wmic.exe
Token: SeLoadDriverPrivilege	2452	wmic.exe
Token: SeSystemProfilePrivilege	2452	wmic.exe
Token: SeSystemtimePrivilege	2452	wmic.exe
Token: SeProfSingleProcessPrivilege	2452	wmic.exe
Token: SeIncBasePriorityPrivilege	2452	wmic.exe
Token: SeCreatePagefilePrivilege	2452	wmic.exe
Token: SeBackupPrivilege	2452	wmic.exe
Token: SeRestorePrivilege	2452	wmic.exe
Token: SeShutdownPrivilege	2452	wmic.exe
Token: SeDebugPrivilege	2452	wmic.exe
Token: SeSystemEnvironmentPrivilege	2452	wmic.exe
Token: SeRemoteShutdownPrivilege	2452	wmic.exe
Token: SeUndockPrivilege	2452	wmic.exe
Token: SeManageVolumePrivilege	2452	wmic.exe
Token: 33	2452	wmic.exe
Token: 34	2452	wmic.exe

Suspicious use of WriteProcessMemory 27 IoCs

description	pid	Process	procid_target
PID 2860 wrote to memory of 1368	2860	fix.exe	28
PID 2860 wrote to memory of 1368	2860	fix.exe	28
PID 2860 wrote to memory of 1368	2860	fix.exe	28
PID 2860 wrote to memory of 2620	2860	fix.exe	30
PID 2860 wrote to memory of 2620	2860	fix.exe	30
PID 2860 wrote to memory of 2620	2860	fix.exe	30
PID 2860 wrote to memory of 2656	2860	fix.exe	32
PID 2860 wrote to memory of 2656	2860	fix.exe	32
PID 2860 wrote to memory of 2656	2860	fix.exe	32
PID 2860 wrote to memory of 2544	2860	fix.exe	34
PID 2860 wrote to memory of 2544	2860	fix.exe	34
PID 2860 wrote to memory of 2544	2860	fix.exe	34
PID 2860 wrote to memory of 2832	2860	fix.exe	36
PID 2860 wrote to memory of 2832	2860	fix.exe	36
PID 2860 wrote to memory of 2832	2860	fix.exe	36
PID 2860 wrote to memory of 2452	2860	fix.exe	39
PID 2860 wrote to memory of 2452	2860	fix.exe	39
PID 2860 wrote to memory of 2452	2860	fix.exe	39
PID 2860 wrote to memory of 1036	2860	fix.exe	41
PID 2860 wrote to memory of 1036	2860	fix.exe	41
PID 2860 wrote to memory of 1036	2860	fix.exe	41
PID 2860 wrote to memory of 1680	2860	fix.exe	43
PID 2860 wrote to memory of 1680	2860	fix.exe	43
PID 2860 wrote to memory of 1680	2860	fix.exe	43
PID 2860 wrote to memory of 2408	2860	fix.exe	45
PID 2860 wrote to memory of 2408	2860	fix.exe	45
PID 2860 wrote to memory of 2408	2860	fix.exe	45

C:\Users\Admin\AppData\Local\Temp\fix.exe
"C:\Users\Admin\AppData\Local\Temp\fix.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2860
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\fix.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1368
- 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⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2620
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Get-ItemPropertyValue -Path HKCU:SOFTWARE\Roblox\RobloxStudioBrowser\roblox.com -Name .ROBLOSECURITY
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2656
- 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:2544
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2832
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2452
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:1036
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Get-ItemPropertyValue -Path 'HKLM:System\CurrentControlSet\Control\Session Manager\Environment' -Name PROCESSOR_IDENTIFIER
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  PID:1680
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:2408

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

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\590aee7bdd69b59b.customDestinations-ms

Filesize
7KB

MD5
ab6d12b22710c8c3e352f1e42d0eda36

SHA1
cb9a33807863690bc7e8cf3c8fd361f92966f768

SHA256
67fe72829d4baab10365b86109a7e64233721052e6318ad0f2e8ab0a69cac47f

SHA512
d9901f44c57b69a7918f7f3776c10d3ce54538d2009412b8a65dea6b88a22a4e1c94d1dfa593bb3f2e68827b48967b9a7400d373ab36e49089028c1846617cf4

Download Submit
memory/1368-10-0x000007FEEDCA0000-0x000007FEEE63D000-memory.dmp

Filesize
9.6MB

Download
memory/1368-12-0x000007FEEDCA0000-0x000007FEEE63D000-memory.dmp

Filesize
9.6MB

Download
memory/1368-15-0x000007FEEDCA0000-0x000007FEEE63D000-memory.dmp

Filesize
9.6MB

Download
memory/1368-9-0x0000000001F70000-0x0000000001F78000-memory.dmp

Filesize
32KB

Download
memory/1368-8-0x000000001B6B0000-0x000000001B992000-memory.dmp

Filesize
2.9MB

Download
memory/1368-11-0x000007FEEDCA0000-0x000007FEEE63D000-memory.dmp

Filesize
9.6MB

Download
memory/1368-13-0x000007FEEDCA0000-0x000007FEEE63D000-memory.dmp

Filesize
9.6MB

Download
memory/1368-7-0x000007FEEDF5E000-0x000007FEEDF5F000-memory.dmp

Filesize
4KB

Download
memory/1368-14-0x000007FEEDCA0000-0x000007FEEE63D000-memory.dmp

Filesize
9.6MB

Download
memory/1680-48-0x0000000002810000-0x0000000002818000-memory.dmp

Filesize
32KB

Download
memory/2620-21-0x000000001B640000-0x000000001B922000-memory.dmp

Filesize
2.9MB

Download
memory/2620-22-0x0000000001D20000-0x0000000001D28000-memory.dmp

Filesize
32KB

Download
memory/2860-0-0x000007FEF5753000-0x000007FEF5754000-memory.dmp

Filesize
4KB

Download
memory/2860-2-0x000007FEF5750000-0x000007FEF613C000-memory.dmp

Filesize
9.9MB

Download
memory/2860-1-0x0000000000BE0000-0x0000000000C20000-memory.dmp

Filesize
256KB

Download
memory/2860-52-0x000007FEF5750000-0x000007FEF613C000-memory.dmp

Filesize
9.9MB

Download