umbral | a5011c165dbd8459396a3b4f901c7faa668e95e395fb12d7c967c34c0d974355

Analysis

max time kernel
16s
max time network
17s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
13-12-2024 07:06

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General

Target

230f75b72d5021a921637929a63cfd79.exe
Size

231KB
MD5

230f75b72d5021a921637929a63cfd79
SHA1

71af2ee3489d49914f7c7fa4e16e8398e97e0fc8
SHA256

a5011c165dbd8459396a3b4f901c7faa668e95e395fb12d7c967c34c0d974355
SHA512

3dc11aac2231daf30871d30f43eba3eadf14f3b003dd1f81466cde021b0b59d38c5e9a320e6705b4f5a0eeebf93f9ee5459173e20de2ab3ae3f3e9988819f001
SSDEEP

6144:xloZMUrIkd8g+EtXHkv/iD4b3gulGELnsyd42X3Wc8b8e1mDQi:DoZrL+EP8b3gulGELnsyd42X3WxYJ

Score

10^/10

umbral discovery execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/2604-1-0x0000000001360000-0x00000000013A0000-memory.dmp	family_umbral

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

Command and Scripting Interpreter: PowerShell 1 TTPs 4 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
2732	powershell.exe
1248	powershell.exe
2884	powershell.exe
2888	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	230f75b72d5021a921637929a63cfd79.exe

Deletes itself 1 IoCs

pid	Process
2600	cmd.exe

Reads user/profile data of web browsers 3 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

Credentials from Web Browsers
T1555.003

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

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
2600	cmd.exe
2232	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
1052	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2232	PING.EXE

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
2888	powershell.exe
2884	powershell.exe
2732	powershell.exe
2960	powershell.exe
1248	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2604	230f75b72d5021a921637929a63cfd79.exe
Token: SeDebugPrivilege	2888	powershell.exe
Token: SeDebugPrivilege	2884	powershell.exe
Token: SeDebugPrivilege	2732	powershell.exe
Token: SeDebugPrivilege	2960	powershell.exe
Token: SeIncreaseQuotaPrivilege	980	wmic.exe
Token: SeSecurityPrivilege	980	wmic.exe
Token: SeTakeOwnershipPrivilege	980	wmic.exe
Token: SeLoadDriverPrivilege	980	wmic.exe
Token: SeSystemProfilePrivilege	980	wmic.exe
Token: SeSystemtimePrivilege	980	wmic.exe
Token: SeProfSingleProcessPrivilege	980	wmic.exe
Token: SeIncBasePriorityPrivilege	980	wmic.exe
Token: SeCreatePagefilePrivilege	980	wmic.exe
Token: SeBackupPrivilege	980	wmic.exe
Token: SeRestorePrivilege	980	wmic.exe
Token: SeShutdownPrivilege	980	wmic.exe
Token: SeDebugPrivilege	980	wmic.exe
Token: SeSystemEnvironmentPrivilege	980	wmic.exe
Token: SeRemoteShutdownPrivilege	980	wmic.exe
Token: SeUndockPrivilege	980	wmic.exe
Token: SeManageVolumePrivilege	980	wmic.exe
Token: 33	980	wmic.exe
Token: 34	980	wmic.exe
Token: 35	980	wmic.exe
Token: SeIncreaseQuotaPrivilege	980	wmic.exe
Token: SeSecurityPrivilege	980	wmic.exe
Token: SeTakeOwnershipPrivilege	980	wmic.exe
Token: SeLoadDriverPrivilege	980	wmic.exe
Token: SeSystemProfilePrivilege	980	wmic.exe
Token: SeSystemtimePrivilege	980	wmic.exe
Token: SeProfSingleProcessPrivilege	980	wmic.exe
Token: SeIncBasePriorityPrivilege	980	wmic.exe
Token: SeCreatePagefilePrivilege	980	wmic.exe
Token: SeBackupPrivilege	980	wmic.exe
Token: SeRestorePrivilege	980	wmic.exe
Token: SeShutdownPrivilege	980	wmic.exe
Token: SeDebugPrivilege	980	wmic.exe
Token: SeSystemEnvironmentPrivilege	980	wmic.exe
Token: SeRemoteShutdownPrivilege	980	wmic.exe
Token: SeUndockPrivilege	980	wmic.exe
Token: SeManageVolumePrivilege	980	wmic.exe
Token: 33	980	wmic.exe
Token: 34	980	wmic.exe
Token: 35	980	wmic.exe
Token: SeIncreaseQuotaPrivilege	2096	wmic.exe
Token: SeSecurityPrivilege	2096	wmic.exe
Token: SeTakeOwnershipPrivilege	2096	wmic.exe
Token: SeLoadDriverPrivilege	2096	wmic.exe
Token: SeSystemProfilePrivilege	2096	wmic.exe
Token: SeSystemtimePrivilege	2096	wmic.exe
Token: SeProfSingleProcessPrivilege	2096	wmic.exe
Token: SeIncBasePriorityPrivilege	2096	wmic.exe
Token: SeCreatePagefilePrivilege	2096	wmic.exe
Token: SeBackupPrivilege	2096	wmic.exe
Token: SeRestorePrivilege	2096	wmic.exe
Token: SeShutdownPrivilege	2096	wmic.exe
Token: SeDebugPrivilege	2096	wmic.exe
Token: SeSystemEnvironmentPrivilege	2096	wmic.exe
Token: SeRemoteShutdownPrivilege	2096	wmic.exe
Token: SeUndockPrivilege	2096	wmic.exe
Token: SeManageVolumePrivilege	2096	wmic.exe
Token: 33	2096	wmic.exe
Token: 34	2096	wmic.exe

Suspicious use of WriteProcessMemory 36 IoCs

description	pid	Process	procid_target
PID 2604 wrote to memory of 2856	2604	230f75b72d5021a921637929a63cfd79.exe	29
PID 2604 wrote to memory of 2856	2604	230f75b72d5021a921637929a63cfd79.exe	29
PID 2604 wrote to memory of 2856	2604	230f75b72d5021a921637929a63cfd79.exe	29
PID 2604 wrote to memory of 2888	2604	230f75b72d5021a921637929a63cfd79.exe	31
PID 2604 wrote to memory of 2888	2604	230f75b72d5021a921637929a63cfd79.exe	31
PID 2604 wrote to memory of 2888	2604	230f75b72d5021a921637929a63cfd79.exe	31
PID 2604 wrote to memory of 2884	2604	230f75b72d5021a921637929a63cfd79.exe	33
PID 2604 wrote to memory of 2884	2604	230f75b72d5021a921637929a63cfd79.exe	33
PID 2604 wrote to memory of 2884	2604	230f75b72d5021a921637929a63cfd79.exe	33
PID 2604 wrote to memory of 2732	2604	230f75b72d5021a921637929a63cfd79.exe	35
PID 2604 wrote to memory of 2732	2604	230f75b72d5021a921637929a63cfd79.exe	35
PID 2604 wrote to memory of 2732	2604	230f75b72d5021a921637929a63cfd79.exe	35
PID 2604 wrote to memory of 2960	2604	230f75b72d5021a921637929a63cfd79.exe	37
PID 2604 wrote to memory of 2960	2604	230f75b72d5021a921637929a63cfd79.exe	37
PID 2604 wrote to memory of 2960	2604	230f75b72d5021a921637929a63cfd79.exe	37
PID 2604 wrote to memory of 980	2604	230f75b72d5021a921637929a63cfd79.exe	39
PID 2604 wrote to memory of 980	2604	230f75b72d5021a921637929a63cfd79.exe	39
PID 2604 wrote to memory of 980	2604	230f75b72d5021a921637929a63cfd79.exe	39
PID 2604 wrote to memory of 2096	2604	230f75b72d5021a921637929a63cfd79.exe	42
PID 2604 wrote to memory of 2096	2604	230f75b72d5021a921637929a63cfd79.exe	42
PID 2604 wrote to memory of 2096	2604	230f75b72d5021a921637929a63cfd79.exe	42
PID 2604 wrote to memory of 2384	2604	230f75b72d5021a921637929a63cfd79.exe	44
PID 2604 wrote to memory of 2384	2604	230f75b72d5021a921637929a63cfd79.exe	44
PID 2604 wrote to memory of 2384	2604	230f75b72d5021a921637929a63cfd79.exe	44
PID 2604 wrote to memory of 1248	2604	230f75b72d5021a921637929a63cfd79.exe	46
PID 2604 wrote to memory of 1248	2604	230f75b72d5021a921637929a63cfd79.exe	46
PID 2604 wrote to memory of 1248	2604	230f75b72d5021a921637929a63cfd79.exe	46
PID 2604 wrote to memory of 1052	2604	230f75b72d5021a921637929a63cfd79.exe	48
PID 2604 wrote to memory of 1052	2604	230f75b72d5021a921637929a63cfd79.exe	48
PID 2604 wrote to memory of 1052	2604	230f75b72d5021a921637929a63cfd79.exe	48
PID 2604 wrote to memory of 2600	2604	230f75b72d5021a921637929a63cfd79.exe	50
PID 2604 wrote to memory of 2600	2604	230f75b72d5021a921637929a63cfd79.exe	50
PID 2604 wrote to memory of 2600	2604	230f75b72d5021a921637929a63cfd79.exe	50
PID 2600 wrote to memory of 2232	2600	cmd.exe	52
PID 2600 wrote to memory of 2232	2600	cmd.exe	52
PID 2600 wrote to memory of 2232	2600	cmd.exe	52

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
2856	attrib.exe

C:\Users\Admin\AppData\Local\Temp\230f75b72d5021a921637929a63cfd79.exe
"C:\Users\Admin\AppData\Local\Temp\230f75b72d5021a921637929a63cfd79.exe"
1⤵
- Drops file in Drivers directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2604
- C:\Windows\system32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\230f75b72d5021a921637929a63cfd79.exe"
  2⤵
  - Views/modifies file attributes
  PID:2856
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\230f75b72d5021a921637929a63cfd79.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2888
- 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:2884
- 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:2732
- 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:2960
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:980
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2096
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:2384
- 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:1248
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:1052
- C:\Windows\system32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\230f75b72d5021a921637929a63cfd79.exe" && pause
  2⤵
  - Deletes itself
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:2600
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:2232

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
2a17645a7e854eff11a4b1df72363e07

SHA1
4d13502356d6a7fcce33e59a6ac479a6bca692ab

SHA256
072cfefbc036c201920eb15392f2fb0c45de94e655e55bd1fe549d0674dbfa26

SHA512
049024fd4ed76aa203a00dd33027c3bdb1d4b670106376d7cbccd463bd22343e9748d04575a8e1467c86a2490cf5acab2e3f90e541c64d510feba08c49bb1ea9

Download Submit
memory/2604-1-0x0000000001360000-0x00000000013A0000-memory.dmp

Filesize
256KB

Download
memory/2604-2-0x000007FEF5790000-0x000007FEF617C000-memory.dmp

Filesize
9.9MB

Download
memory/2604-50-0x000007FEF5790000-0x000007FEF617C000-memory.dmp

Filesize
9.9MB

Download
memory/2604-0-0x000007FEF5793000-0x000007FEF5794000-memory.dmp

Filesize
4KB

Download
memory/2604-40-0x000007FEF5793000-0x000007FEF5794000-memory.dmp

Filesize
4KB

Download
memory/2604-41-0x000007FEF5790000-0x000007FEF617C000-memory.dmp

Filesize
9.9MB

Download
memory/2884-22-0x00000000028E0000-0x00000000028E8000-memory.dmp

Filesize
32KB

Download
memory/2884-21-0x000000001B6B0000-0x000000001B992000-memory.dmp

Filesize
2.9MB

Download
memory/2888-10-0x0000000001D80000-0x0000000001D88000-memory.dmp

Filesize
32KB

Download
memory/2888-14-0x000007FEED250000-0x000007FEEDBED000-memory.dmp

Filesize
9.6MB

Download
memory/2888-15-0x000007FEED250000-0x000007FEEDBED000-memory.dmp

Filesize
9.6MB

Download
memory/2888-13-0x000007FEED250000-0x000007FEEDBED000-memory.dmp

Filesize
9.6MB

Download
memory/2888-12-0x000007FEED250000-0x000007FEEDBED000-memory.dmp

Filesize
9.6MB

Download
memory/2888-11-0x000007FEED250000-0x000007FEEDBED000-memory.dmp

Filesize
9.6MB

Download
memory/2888-8-0x000000001B610000-0x000000001B8F2000-memory.dmp

Filesize
2.9MB

Download
memory/2888-9-0x000007FEED250000-0x000007FEEDBED000-memory.dmp

Filesize
9.6MB

Download
memory/2888-7-0x000007FEED50E000-0x000007FEED50F000-memory.dmp

Filesize
4KB

Download