umbral | f637e4110044a636ee310796ac7659d7b80a2e9ece59d47287cf6b4fe4bd35e1

Analysis

max time kernel
117s
max time network
118s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
17-11-2024 15:31

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General

Target

clenor2.exe
Size

251KB
MD5

42c9654eb3298b8d5f4d16d1ed0d749e
SHA1

4fc97a7b2620c1ce483b1cc0ec18ce72c95ad74f
SHA256

f637e4110044a636ee310796ac7659d7b80a2e9ece59d47287cf6b4fe4bd35e1
SHA512

2e2ea79df165f7431aea4663c7cee5e43df0510ac2a03e17ff9bed4c5ffe1b9174bdb9060e985c831abf36cbf0942b1fa76da2d30b277e26b2b83a632aaf0599
SSDEEP

6144:TloZMsrIkd8g+EtXHkv/iD4xxfibhS6FHAxDeebc+Yb8e1m0yi40D:RoZTL+EP8xxfibhS6FHAxDeebcX7n40D

Score

10^/10

umbral execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/2232-1-0x00000000011E0000-0x0000000001224000-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

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

execution

PowerShell

T1059.001

pid	Process
2624	powershell.exe
3028	powershell.exe
1284	powershell.exe
1036	powershell.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
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

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
2208	wmic.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2232	clenor2.exe
2624	powershell.exe
3028	powershell.exe
1284	powershell.exe
2988	powershell.exe
1036	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2232	clenor2.exe
Token: SeIncreaseQuotaPrivilege	2708	wmic.exe
Token: SeSecurityPrivilege	2708	wmic.exe
Token: SeTakeOwnershipPrivilege	2708	wmic.exe
Token: SeLoadDriverPrivilege	2708	wmic.exe
Token: SeSystemProfilePrivilege	2708	wmic.exe
Token: SeSystemtimePrivilege	2708	wmic.exe
Token: SeProfSingleProcessPrivilege	2708	wmic.exe
Token: SeIncBasePriorityPrivilege	2708	wmic.exe
Token: SeCreatePagefilePrivilege	2708	wmic.exe
Token: SeBackupPrivilege	2708	wmic.exe
Token: SeRestorePrivilege	2708	wmic.exe
Token: SeShutdownPrivilege	2708	wmic.exe
Token: SeDebugPrivilege	2708	wmic.exe
Token: SeSystemEnvironmentPrivilege	2708	wmic.exe
Token: SeRemoteShutdownPrivilege	2708	wmic.exe
Token: SeUndockPrivilege	2708	wmic.exe
Token: SeManageVolumePrivilege	2708	wmic.exe
Token: 33	2708	wmic.exe
Token: 34	2708	wmic.exe
Token: 35	2708	wmic.exe
Token: SeIncreaseQuotaPrivilege	2708	wmic.exe
Token: SeSecurityPrivilege	2708	wmic.exe
Token: SeTakeOwnershipPrivilege	2708	wmic.exe
Token: SeLoadDriverPrivilege	2708	wmic.exe
Token: SeSystemProfilePrivilege	2708	wmic.exe
Token: SeSystemtimePrivilege	2708	wmic.exe
Token: SeProfSingleProcessPrivilege	2708	wmic.exe
Token: SeIncBasePriorityPrivilege	2708	wmic.exe
Token: SeCreatePagefilePrivilege	2708	wmic.exe
Token: SeBackupPrivilege	2708	wmic.exe
Token: SeRestorePrivilege	2708	wmic.exe
Token: SeShutdownPrivilege	2708	wmic.exe
Token: SeDebugPrivilege	2708	wmic.exe
Token: SeSystemEnvironmentPrivilege	2708	wmic.exe
Token: SeRemoteShutdownPrivilege	2708	wmic.exe
Token: SeUndockPrivilege	2708	wmic.exe
Token: SeManageVolumePrivilege	2708	wmic.exe
Token: 33	2708	wmic.exe
Token: 34	2708	wmic.exe
Token: 35	2708	wmic.exe
Token: SeDebugPrivilege	2624	powershell.exe
Token: SeDebugPrivilege	3028	powershell.exe
Token: SeDebugPrivilege	1284	powershell.exe
Token: SeDebugPrivilege	2988	powershell.exe
Token: SeIncreaseQuotaPrivilege	2896	wmic.exe
Token: SeSecurityPrivilege	2896	wmic.exe
Token: SeTakeOwnershipPrivilege	2896	wmic.exe
Token: SeLoadDriverPrivilege	2896	wmic.exe
Token: SeSystemProfilePrivilege	2896	wmic.exe
Token: SeSystemtimePrivilege	2896	wmic.exe
Token: SeProfSingleProcessPrivilege	2896	wmic.exe
Token: SeIncBasePriorityPrivilege	2896	wmic.exe
Token: SeCreatePagefilePrivilege	2896	wmic.exe
Token: SeBackupPrivilege	2896	wmic.exe
Token: SeRestorePrivilege	2896	wmic.exe
Token: SeShutdownPrivilege	2896	wmic.exe
Token: SeDebugPrivilege	2896	wmic.exe
Token: SeSystemEnvironmentPrivilege	2896	wmic.exe
Token: SeRemoteShutdownPrivilege	2896	wmic.exe
Token: SeUndockPrivilege	2896	wmic.exe
Token: SeManageVolumePrivilege	2896	wmic.exe
Token: 33	2896	wmic.exe
Token: 34	2896	wmic.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2232 wrote to memory of 2708	2232	clenor2.exe	30
PID 2232 wrote to memory of 2708	2232	clenor2.exe	30
PID 2232 wrote to memory of 2708	2232	clenor2.exe	30
PID 2232 wrote to memory of 2624	2232	clenor2.exe	33
PID 2232 wrote to memory of 2624	2232	clenor2.exe	33
PID 2232 wrote to memory of 2624	2232	clenor2.exe	33
PID 2232 wrote to memory of 3028	2232	clenor2.exe	35
PID 2232 wrote to memory of 3028	2232	clenor2.exe	35
PID 2232 wrote to memory of 3028	2232	clenor2.exe	35
PID 2232 wrote to memory of 1284	2232	clenor2.exe	37
PID 2232 wrote to memory of 1284	2232	clenor2.exe	37
PID 2232 wrote to memory of 1284	2232	clenor2.exe	37
PID 2232 wrote to memory of 2988	2232	clenor2.exe	39
PID 2232 wrote to memory of 2988	2232	clenor2.exe	39
PID 2232 wrote to memory of 2988	2232	clenor2.exe	39
PID 2232 wrote to memory of 2896	2232	clenor2.exe	41
PID 2232 wrote to memory of 2896	2232	clenor2.exe	41
PID 2232 wrote to memory of 2896	2232	clenor2.exe	41
PID 2232 wrote to memory of 300	2232	clenor2.exe	43
PID 2232 wrote to memory of 300	2232	clenor2.exe	43
PID 2232 wrote to memory of 300	2232	clenor2.exe	43
PID 2232 wrote to memory of 2160	2232	clenor2.exe	45
PID 2232 wrote to memory of 2160	2232	clenor2.exe	45
PID 2232 wrote to memory of 2160	2232	clenor2.exe	45
PID 2232 wrote to memory of 1036	2232	clenor2.exe	47
PID 2232 wrote to memory of 1036	2232	clenor2.exe	47
PID 2232 wrote to memory of 1036	2232	clenor2.exe	47
PID 2232 wrote to memory of 2208	2232	clenor2.exe	49
PID 2232 wrote to memory of 2208	2232	clenor2.exe	49
PID 2232 wrote to memory of 2208	2232	clenor2.exe	49

C:\Users\Admin\AppData\Local\Temp\clenor2.exe
"C:\Users\Admin\AppData\Local\Temp\clenor2.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2232
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2708
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\clenor2.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2624
- 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:3028
- 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:1284
- 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:2988
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2896
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:300
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:2160
- 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:1036
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:2208

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\590aee7bdd69b59b.customDestinations-ms

Filesize
7KB

MD5
c70b143085a9046d8f14982949f695b7

SHA1
133729da1e86e061bfc328438c7975d54dcd0d3f

SHA256
1e57839ddd6f7eeed3fd289160f36694cd7b4c4928fe45ba8bf32b96d11e94b4

SHA512
f36a3ab46b97b8734bb8a258f2d6400f39e62b24d2f8538a4dabc8473d7c27d5aecfcd36355033e420705f7bd20a73c48b0ac16377bcbbee2e037eb9b1c9c20e

Download Submit
memory/1036-37-0x00000000027A0000-0x00000000027A8000-memory.dmp

Filesize
32KB

Download
memory/2232-0-0x000007FEF5E23000-0x000007FEF5E24000-memory.dmp

Filesize
4KB

Download
memory/2232-1-0x00000000011E0000-0x0000000001224000-memory.dmp

Filesize
272KB

Download
memory/2232-2-0x000007FEF5E20000-0x000007FEF680C000-memory.dmp

Filesize
9.9MB

Download
memory/2232-41-0x000007FEF5E20000-0x000007FEF680C000-memory.dmp

Filesize
9.9MB

Download
memory/2624-7-0x000000001B6B0000-0x000000001B992000-memory.dmp

Filesize
2.9MB

Download
memory/2624-8-0x0000000002810000-0x0000000002818000-memory.dmp

Filesize
32KB

Download
memory/3028-14-0x000000001B740000-0x000000001BA22000-memory.dmp

Filesize
2.9MB

Download
memory/3028-15-0x0000000002690000-0x0000000002698000-memory.dmp

Filesize
32KB

Download