umbral | 3ee237cbbcd082d1668f330d6c2aff90e4d965b343aca348d64a3c23cf394b67

Analysis

max time kernel
138s
max time network
139s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
31-10-2024 05:21

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General

Target

dmbral.exe
Size

227KB
MD5

5bf15d22b81f8487a3ba892c44b48e80
SHA1

b1e36876f0e7788a646844f08f32a0d17ae335bf
SHA256

3ee237cbbcd082d1668f330d6c2aff90e4d965b343aca348d64a3c23cf394b67
SHA512

f7889333a476acb65a5a9a5e4076d9060471a28dfda46e67955c849f54b13c74aafa408de9ed9b6c4f3be7b8990c873407927fdd87afee7ef7b6a0a7d9e3c6f2
SSDEEP

6144:eloZM+rIkd8g+EtXHkv/iD4Sf5pBPUonVWvRsY9w4b8e1mBii:IoZ1L+EP8Sf5pBPUonVWvRsY9hO

Score

10^/10

umbral discovery execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral2/memory/1656-1-0x000001F939E60000-0x000001F939EA0000-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
1336	powershell.exe
1224	powershell.exe
1808	powershell.exe
4012	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
19	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
17	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
2908	cmd.exe
1032	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
2880	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
1032	PING.EXE

Suspicious behavior: EnumeratesProcesses 10 IoCs

pid	Process
4012	powershell.exe
4012	powershell.exe
1336	powershell.exe
1336	powershell.exe
1224	powershell.exe
1224	powershell.exe
5020	powershell.exe
5020	powershell.exe
1808	powershell.exe
1808	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	1656	dmbral.exe
Token: SeDebugPrivilege	4012	powershell.exe
Token: SeDebugPrivilege	1336	powershell.exe
Token: SeDebugPrivilege	1224	powershell.exe
Token: SeDebugPrivilege	5020	powershell.exe
Token: SeIncreaseQuotaPrivilege	4624	wmic.exe
Token: SeSecurityPrivilege	4624	wmic.exe
Token: SeTakeOwnershipPrivilege	4624	wmic.exe
Token: SeLoadDriverPrivilege	4624	wmic.exe
Token: SeSystemProfilePrivilege	4624	wmic.exe
Token: SeSystemtimePrivilege	4624	wmic.exe
Token: SeProfSingleProcessPrivilege	4624	wmic.exe
Token: SeIncBasePriorityPrivilege	4624	wmic.exe
Token: SeCreatePagefilePrivilege	4624	wmic.exe
Token: SeBackupPrivilege	4624	wmic.exe
Token: SeRestorePrivilege	4624	wmic.exe
Token: SeShutdownPrivilege	4624	wmic.exe
Token: SeDebugPrivilege	4624	wmic.exe
Token: SeSystemEnvironmentPrivilege	4624	wmic.exe
Token: SeRemoteShutdownPrivilege	4624	wmic.exe
Token: SeUndockPrivilege	4624	wmic.exe
Token: SeManageVolumePrivilege	4624	wmic.exe
Token: 33	4624	wmic.exe
Token: 34	4624	wmic.exe
Token: 35	4624	wmic.exe
Token: 36	4624	wmic.exe
Token: SeIncreaseQuotaPrivilege	4624	wmic.exe
Token: SeSecurityPrivilege	4624	wmic.exe
Token: SeTakeOwnershipPrivilege	4624	wmic.exe
Token: SeLoadDriverPrivilege	4624	wmic.exe
Token: SeSystemProfilePrivilege	4624	wmic.exe
Token: SeSystemtimePrivilege	4624	wmic.exe
Token: SeProfSingleProcessPrivilege	4624	wmic.exe
Token: SeIncBasePriorityPrivilege	4624	wmic.exe
Token: SeCreatePagefilePrivilege	4624	wmic.exe
Token: SeBackupPrivilege	4624	wmic.exe
Token: SeRestorePrivilege	4624	wmic.exe
Token: SeShutdownPrivilege	4624	wmic.exe
Token: SeDebugPrivilege	4624	wmic.exe
Token: SeSystemEnvironmentPrivilege	4624	wmic.exe
Token: SeRemoteShutdownPrivilege	4624	wmic.exe
Token: SeUndockPrivilege	4624	wmic.exe
Token: SeManageVolumePrivilege	4624	wmic.exe
Token: 33	4624	wmic.exe
Token: 34	4624	wmic.exe
Token: 35	4624	wmic.exe
Token: 36	4624	wmic.exe
Token: SeIncreaseQuotaPrivilege	652	wmic.exe
Token: SeSecurityPrivilege	652	wmic.exe
Token: SeTakeOwnershipPrivilege	652	wmic.exe
Token: SeLoadDriverPrivilege	652	wmic.exe
Token: SeSystemProfilePrivilege	652	wmic.exe
Token: SeSystemtimePrivilege	652	wmic.exe
Token: SeProfSingleProcessPrivilege	652	wmic.exe
Token: SeIncBasePriorityPrivilege	652	wmic.exe
Token: SeCreatePagefilePrivilege	652	wmic.exe
Token: SeBackupPrivilege	652	wmic.exe
Token: SeRestorePrivilege	652	wmic.exe
Token: SeShutdownPrivilege	652	wmic.exe
Token: SeDebugPrivilege	652	wmic.exe
Token: SeSystemEnvironmentPrivilege	652	wmic.exe
Token: SeRemoteShutdownPrivilege	652	wmic.exe
Token: SeUndockPrivilege	652	wmic.exe
Token: SeManageVolumePrivilege	652	wmic.exe

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 1656 wrote to memory of 3440	1656	dmbral.exe	84
PID 1656 wrote to memory of 3440	1656	dmbral.exe	84
PID 1656 wrote to memory of 4012	1656	dmbral.exe	86
PID 1656 wrote to memory of 4012	1656	dmbral.exe	86
PID 1656 wrote to memory of 1336	1656	dmbral.exe	88
PID 1656 wrote to memory of 1336	1656	dmbral.exe	88
PID 1656 wrote to memory of 1224	1656	dmbral.exe	92
PID 1656 wrote to memory of 1224	1656	dmbral.exe	92
PID 1656 wrote to memory of 5020	1656	dmbral.exe	95
PID 1656 wrote to memory of 5020	1656	dmbral.exe	95
PID 1656 wrote to memory of 4624	1656	dmbral.exe	97
PID 1656 wrote to memory of 4624	1656	dmbral.exe	97
PID 1656 wrote to memory of 652	1656	dmbral.exe	100
PID 1656 wrote to memory of 652	1656	dmbral.exe	100
PID 1656 wrote to memory of 3684	1656	dmbral.exe	102
PID 1656 wrote to memory of 3684	1656	dmbral.exe	102
PID 1656 wrote to memory of 1808	1656	dmbral.exe	104
PID 1656 wrote to memory of 1808	1656	dmbral.exe	104
PID 1656 wrote to memory of 2880	1656	dmbral.exe	106
PID 1656 wrote to memory of 2880	1656	dmbral.exe	106
PID 1656 wrote to memory of 2908	1656	dmbral.exe	110
PID 1656 wrote to memory of 2908	1656	dmbral.exe	110
PID 2908 wrote to memory of 1032	2908	cmd.exe	112
PID 2908 wrote to memory of 1032	2908	cmd.exe	112

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
3440	attrib.exe

C:\Users\Admin\AppData\Local\Temp\dmbral.exe
"C:\Users\Admin\AppData\Local\Temp\dmbral.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1656
- C:\Windows\SYSTEM32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\dmbral.exe"
  2⤵
  - Views/modifies file attributes
  PID:3440
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\dmbral.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4012
- 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:1336
- 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:1224
- 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:5020
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:4624
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:652
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:3684
- 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:1808
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:2880
- C:\Windows\SYSTEM32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\dmbral.exe" && pause
  2⤵
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:2908
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:1032

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

Replay Monitor

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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
77d622bb1a5b250869a3238b9bc1402b

SHA1
d47f4003c2554b9dfc4c16f22460b331886b191b

SHA256
f97ff12a8abf4bf88bb6497bd2ac2da12628c8847a8ba5a9026bdbb76507cdfb

SHA512
d6789b5499f23c9035375a102271e17a8a82e57d6f5312fa24242e08a83efdeb8becb7622f55c4cf1b89c7d864b445df11f4d994cf7e2f87a900535bcca12fd9

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

Filesize
948B

MD5
f4bf3ca8753d6bb9725419fec1ec74b9

SHA1
71fce9d17d1d92873236a9a827c52eb9e4827f3d

SHA256
ca8697e4ada4c3d4aac2899b8aad4052ccd605fccee05ee0a831368bde2f7417

SHA512
a55a107ae8bcf833ea674413c765cd55096146c9634dff41884fcc851c12fe47753308099525c99ae44883facfb668c8b292dd915263f34ebd1190391cb28a54

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
7511c81925750deb7ad1b9b80eea8a8d

SHA1
6ea759b3cbd243ae11435c6d6c5ced185eb01f49

SHA256
5b49723a7773f2fe1f6093236e7b9b2c546f0873635d02346cb39535811234fa

SHA512
5f7e69316d39525d137a7a833f8c746ceef8f1b2295348393fb3244cca8b962fbaad0f7da49da453fe97e2c49b1f41f06138111ac5ff97fdc33c300350ec3a1b

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_dlzfjmv4.z0e.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1656-71-0x000001F954720000-0x000001F95472A000-memory.dmp

Filesize
40KB

Download
memory/1656-34-0x000001F954510000-0x000001F95452E000-memory.dmp

Filesize
120KB

Download
memory/1656-92-0x00007FF955030000-0x00007FF955AF1000-memory.dmp

Filesize
10.8MB

Download
memory/1656-72-0x000001F954760000-0x000001F954772000-memory.dmp

Filesize
72KB

Download
memory/1656-2-0x00007FF955030000-0x00007FF955AF1000-memory.dmp

Filesize
10.8MB

Download
memory/1656-32-0x000001F954590000-0x000001F954606000-memory.dmp

Filesize
472KB

Download
memory/1656-33-0x000001F954540000-0x000001F954590000-memory.dmp

Filesize
320KB

Download
memory/1656-0-0x00007FF955033000-0x00007FF955035000-memory.dmp

Filesize
8KB

Download
memory/1656-1-0x000001F939E60000-0x000001F939EA0000-memory.dmp

Filesize
256KB

Download
memory/4012-15-0x00007FF955030000-0x00007FF955AF1000-memory.dmp

Filesize
10.8MB

Download
memory/4012-14-0x00007FF955030000-0x00007FF955AF1000-memory.dmp

Filesize
10.8MB

Download
memory/4012-8-0x000002286C610000-0x000002286C632000-memory.dmp

Filesize
136KB

Download
memory/4012-9-0x00007FF955030000-0x00007FF955AF1000-memory.dmp

Filesize
10.8MB

Download
memory/4012-18-0x00007FF955030000-0x00007FF955AF1000-memory.dmp

Filesize
10.8MB

Download