umbral | f637e4110044a636ee310796ac7659d7b80a2e9ece59d47287cf6b4fe4bd35e1

Analysis

max time kernel
149s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
17-11-2024 15:31

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

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
behavioral2/memory/3364-1-0x0000016F25AE0000-0x0000016F25B24000-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
620	powershell.exe
624	powershell.exe
640	powershell.exe
4888	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
21	discord.com
20	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
5	ip-api.com

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
4988	wmic.exe

Suspicious behavior: EnumeratesProcesses 11 IoCs

pid	Process
3364	clenor2.exe
620	powershell.exe
620	powershell.exe
4888	powershell.exe
4888	powershell.exe
624	powershell.exe
624	powershell.exe
528	powershell.exe
528	powershell.exe
640	powershell.exe
640	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	3364	clenor2.exe
Token: SeIncreaseQuotaPrivilege	4228	wmic.exe
Token: SeSecurityPrivilege	4228	wmic.exe
Token: SeTakeOwnershipPrivilege	4228	wmic.exe
Token: SeLoadDriverPrivilege	4228	wmic.exe
Token: SeSystemProfilePrivilege	4228	wmic.exe
Token: SeSystemtimePrivilege	4228	wmic.exe
Token: SeProfSingleProcessPrivilege	4228	wmic.exe
Token: SeIncBasePriorityPrivilege	4228	wmic.exe
Token: SeCreatePagefilePrivilege	4228	wmic.exe
Token: SeBackupPrivilege	4228	wmic.exe
Token: SeRestorePrivilege	4228	wmic.exe
Token: SeShutdownPrivilege	4228	wmic.exe
Token: SeDebugPrivilege	4228	wmic.exe
Token: SeSystemEnvironmentPrivilege	4228	wmic.exe
Token: SeRemoteShutdownPrivilege	4228	wmic.exe
Token: SeUndockPrivilege	4228	wmic.exe
Token: SeManageVolumePrivilege	4228	wmic.exe
Token: 33	4228	wmic.exe
Token: 34	4228	wmic.exe
Token: 35	4228	wmic.exe
Token: 36	4228	wmic.exe
Token: SeIncreaseQuotaPrivilege	4228	wmic.exe
Token: SeSecurityPrivilege	4228	wmic.exe
Token: SeTakeOwnershipPrivilege	4228	wmic.exe
Token: SeLoadDriverPrivilege	4228	wmic.exe
Token: SeSystemProfilePrivilege	4228	wmic.exe
Token: SeSystemtimePrivilege	4228	wmic.exe
Token: SeProfSingleProcessPrivilege	4228	wmic.exe
Token: SeIncBasePriorityPrivilege	4228	wmic.exe
Token: SeCreatePagefilePrivilege	4228	wmic.exe
Token: SeBackupPrivilege	4228	wmic.exe
Token: SeRestorePrivilege	4228	wmic.exe
Token: SeShutdownPrivilege	4228	wmic.exe
Token: SeDebugPrivilege	4228	wmic.exe
Token: SeSystemEnvironmentPrivilege	4228	wmic.exe
Token: SeRemoteShutdownPrivilege	4228	wmic.exe
Token: SeUndockPrivilege	4228	wmic.exe
Token: SeManageVolumePrivilege	4228	wmic.exe
Token: 33	4228	wmic.exe
Token: 34	4228	wmic.exe
Token: 35	4228	wmic.exe
Token: 36	4228	wmic.exe
Token: SeDebugPrivilege	620	powershell.exe
Token: SeDebugPrivilege	4888	powershell.exe
Token: SeDebugPrivilege	624	powershell.exe
Token: SeDebugPrivilege	528	powershell.exe
Token: SeIncreaseQuotaPrivilege	1500	wmic.exe
Token: SeSecurityPrivilege	1500	wmic.exe
Token: SeTakeOwnershipPrivilege	1500	wmic.exe
Token: SeLoadDriverPrivilege	1500	wmic.exe
Token: SeSystemProfilePrivilege	1500	wmic.exe
Token: SeSystemtimePrivilege	1500	wmic.exe
Token: SeProfSingleProcessPrivilege	1500	wmic.exe
Token: SeIncBasePriorityPrivilege	1500	wmic.exe
Token: SeCreatePagefilePrivilege	1500	wmic.exe
Token: SeBackupPrivilege	1500	wmic.exe
Token: SeRestorePrivilege	1500	wmic.exe
Token: SeShutdownPrivilege	1500	wmic.exe
Token: SeDebugPrivilege	1500	wmic.exe
Token: SeSystemEnvironmentPrivilege	1500	wmic.exe
Token: SeRemoteShutdownPrivilege	1500	wmic.exe
Token: SeUndockPrivilege	1500	wmic.exe
Token: SeManageVolumePrivilege	1500	wmic.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 3364 wrote to memory of 4228	3364	clenor2.exe	83
PID 3364 wrote to memory of 4228	3364	clenor2.exe	83
PID 3364 wrote to memory of 620	3364	clenor2.exe	89
PID 3364 wrote to memory of 620	3364	clenor2.exe	89
PID 3364 wrote to memory of 4888	3364	clenor2.exe	91
PID 3364 wrote to memory of 4888	3364	clenor2.exe	91
PID 3364 wrote to memory of 624	3364	clenor2.exe	93
PID 3364 wrote to memory of 624	3364	clenor2.exe	93
PID 3364 wrote to memory of 528	3364	clenor2.exe	95
PID 3364 wrote to memory of 528	3364	clenor2.exe	95
PID 3364 wrote to memory of 1500	3364	clenor2.exe	99
PID 3364 wrote to memory of 1500	3364	clenor2.exe	99
PID 3364 wrote to memory of 4804	3364	clenor2.exe	101
PID 3364 wrote to memory of 4804	3364	clenor2.exe	101
PID 3364 wrote to memory of 1320	3364	clenor2.exe	103
PID 3364 wrote to memory of 1320	3364	clenor2.exe	103
PID 3364 wrote to memory of 640	3364	clenor2.exe	105
PID 3364 wrote to memory of 640	3364	clenor2.exe	105
PID 3364 wrote to memory of 4988	3364	clenor2.exe	108
PID 3364 wrote to memory of 4988	3364	clenor2.exe	108

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:3364
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:4228
- 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:620
- 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:4888
- 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:624
- 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:528
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1500
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:4804
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:1320
- 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:640
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:4988

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

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log

Filesize
2KB

MD5
d85ba6ff808d9e5444a4b369f5bc2730

SHA1
31aa9d96590fff6981b315e0b391b575e4c0804a

SHA256
84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f

SHA512
8c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
944B

MD5
6d3e9c29fe44e90aae6ed30ccf799ca8

SHA1
c7974ef72264bbdf13a2793ccf1aed11bc565dce

SHA256
2360634e63e8f0b5748e2c56ebb8f4aa78e71008ea7b5c9ca1c49be03b49557d

SHA512
60c38c4367352537545d859f64b9c5cbada94240478d1d039fd27b5ecba4dc1c90051557c16d802269703b873546ead416279c0a80c6fd5e49ad361cef22596a

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
948B

MD5
17d8127be94d3c1b6fcc9a4ed585003e

SHA1
789874fcc7c778c723f3e89822d8cc8750c6c4c8

SHA256
ea357ad1f95863b3618d31e5b0f90495331f64de2b784d9e185b48668c937a7b

SHA512
bb18b6d07d82227f5cfbe3eb460df79ec892c560ad2964dcd4782aa26336ae15059843bf46a739bdd4a4daa58057f99102531a756a1cf434ce6449b3cd35a98e

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
1KB

MD5
276798eeb29a49dc6e199768bc9c2e71

SHA1
5fdc8ccb897ac2df7476fbb07517aca5b7a6205b

SHA256
cd0a1056e8f1b6cb5cb328532239d802f4e2aa8f8fcdc0fcb487684bd68e0dcc

SHA512
0d34fce64bbefc57d64fa6e03ca886952263d5f24df9c1c4cce6a1e8f5a47a9a21e9820f8d38caa7f7b43a52336ce00b738ea18419aaa7c788b72e04ce19e4f2

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
1KB

MD5
ac057a92f4b62d8880169af0693ef5b2

SHA1
66e7c7834c5dae5cec863ccd69403150d05841f4

SHA256
7cef55990e8e6cfe07e1965b303e79ac562cdc128ab82edf480d9873f72bb3ed

SHA512
d525f47da9e61fc87e55aca6b34e776be3ed081b719bbbb5256705a6afe5fdd4c16d5ee595af13994e2718f789f5fd32830331347d97b029c031c9dfe30c7f49

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_y1sjmqv4.lcl.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/620-13-0x000001C0AA020000-0x000001C0AA042000-memory.dmp

Filesize
136KB

Download
memory/620-14-0x00007FFBBDA00000-0x00007FFBBE4C1000-memory.dmp

Filesize
10.8MB

Download
memory/620-15-0x00007FFBBDA00000-0x00007FFBBE4C1000-memory.dmp

Filesize
10.8MB

Download
memory/620-18-0x00007FFBBDA00000-0x00007FFBBE4C1000-memory.dmp

Filesize
10.8MB

Download
memory/620-3-0x00007FFBBDA00000-0x00007FFBBE4C1000-memory.dmp

Filesize
10.8MB

Download
memory/3364-32-0x0000016F40210000-0x0000016F40260000-memory.dmp

Filesize
320KB

Download
memory/3364-31-0x0000016F40290000-0x0000016F40306000-memory.dmp

Filesize
472KB

Download
memory/3364-33-0x0000016F27770000-0x0000016F2778E000-memory.dmp

Filesize
120KB

Download
memory/3364-1-0x0000016F25AE0000-0x0000016F25B24000-memory.dmp

Filesize
272KB

Download
memory/3364-0-0x00007FFBBDA03000-0x00007FFBBDA05000-memory.dmp

Filesize
8KB

Download
memory/3364-63-0x0000016F277A0000-0x0000016F277AA000-memory.dmp

Filesize
40KB

Download
memory/3364-64-0x0000016F40260000-0x0000016F40272000-memory.dmp

Filesize
72KB

Download
memory/3364-2-0x00007FFBBDA00000-0x00007FFBBE4C1000-memory.dmp

Filesize
10.8MB

Download
memory/3364-82-0x00007FFBBDA00000-0x00007FFBBE4C1000-memory.dmp

Filesize
10.8MB

Download