umbral | d87db916c3d491a3616f4db964b0af304b44e82240508aae6cf0616939cc937f

Analysis

max time kernel
112s
max time network
121s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
25-08-2024 22:13

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General

Target

d3ccce85ce8dfc4087cca43248f44920N.exe
Size

394KB
MD5

d3ccce85ce8dfc4087cca43248f44920
SHA1

547a8a789d9167946b5e80a1123ff0aedd04be37
SHA256

d87db916c3d491a3616f4db964b0af304b44e82240508aae6cf0616939cc937f
SHA512

5b025da2ad754d4e95a9d3ca58af01fc666c7350056e92d781cfbf5c76d19eaebecef3bcc4c2fd2c05ae55f9c71581d39f6b57869c22897bf516c99f4a908e8d
SSDEEP

6144:YloZMArIkd8g+EtXHkv/iD4BAHCtxdc8e1mQCiNUhcX7elbKTuq9bfF/H9d9n:GoZHL+EP8y2xw5XN3X3uO

Score

10^/10

umbral credential_access execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral2/memory/2472-1-0x000001B205B30000-0x000001B205B98000-memory.dmp	family_umbral

Umbral
Umbral stealer is an opensource moduler stealer written in C#.
stealer umbral
Credentials from Password Stores: Credentials from Web Browsers 1 TTPs
Malicious Access or copy of Web Browser Credential store.
credential_access stealer

Credentials from Web Browsers
T1555.003

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
4660	powershell.exe
2364	powershell.exe
3340	powershell.exe
4724	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	d3ccce85ce8dfc4087cca43248f44920N.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
35	discord.com
37	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
22	ip-api.com

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
3844	wmic.exe

Suspicious behavior: EnumeratesProcesses 10 IoCs

pid	Process
4660	powershell.exe
4660	powershell.exe
2364	powershell.exe
2364	powershell.exe
3340	powershell.exe
3340	powershell.exe
2412	powershell.exe
2412	powershell.exe
4724	powershell.exe
4724	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2472	d3ccce85ce8dfc4087cca43248f44920N.exe
Token: SeDebugPrivilege	4660	powershell.exe
Token: SeDebugPrivilege	2364	powershell.exe
Token: SeDebugPrivilege	3340	powershell.exe
Token: SeDebugPrivilege	2412	powershell.exe
Token: SeIncreaseQuotaPrivilege	1864	wmic.exe
Token: SeSecurityPrivilege	1864	wmic.exe
Token: SeTakeOwnershipPrivilege	1864	wmic.exe
Token: SeLoadDriverPrivilege	1864	wmic.exe
Token: SeSystemProfilePrivilege	1864	wmic.exe
Token: SeSystemtimePrivilege	1864	wmic.exe
Token: SeProfSingleProcessPrivilege	1864	wmic.exe
Token: SeIncBasePriorityPrivilege	1864	wmic.exe
Token: SeCreatePagefilePrivilege	1864	wmic.exe
Token: SeBackupPrivilege	1864	wmic.exe
Token: SeRestorePrivilege	1864	wmic.exe
Token: SeShutdownPrivilege	1864	wmic.exe
Token: SeDebugPrivilege	1864	wmic.exe
Token: SeSystemEnvironmentPrivilege	1864	wmic.exe
Token: SeRemoteShutdownPrivilege	1864	wmic.exe
Token: SeUndockPrivilege	1864	wmic.exe
Token: SeManageVolumePrivilege	1864	wmic.exe
Token: 33	1864	wmic.exe
Token: 34	1864	wmic.exe
Token: 35	1864	wmic.exe
Token: 36	1864	wmic.exe
Token: SeIncreaseQuotaPrivilege	1864	wmic.exe
Token: SeSecurityPrivilege	1864	wmic.exe
Token: SeTakeOwnershipPrivilege	1864	wmic.exe
Token: SeLoadDriverPrivilege	1864	wmic.exe
Token: SeSystemProfilePrivilege	1864	wmic.exe
Token: SeSystemtimePrivilege	1864	wmic.exe
Token: SeProfSingleProcessPrivilege	1864	wmic.exe
Token: SeIncBasePriorityPrivilege	1864	wmic.exe
Token: SeCreatePagefilePrivilege	1864	wmic.exe
Token: SeBackupPrivilege	1864	wmic.exe
Token: SeRestorePrivilege	1864	wmic.exe
Token: SeShutdownPrivilege	1864	wmic.exe
Token: SeDebugPrivilege	1864	wmic.exe
Token: SeSystemEnvironmentPrivilege	1864	wmic.exe
Token: SeRemoteShutdownPrivilege	1864	wmic.exe
Token: SeUndockPrivilege	1864	wmic.exe
Token: SeManageVolumePrivilege	1864	wmic.exe
Token: 33	1864	wmic.exe
Token: 34	1864	wmic.exe
Token: 35	1864	wmic.exe
Token: 36	1864	wmic.exe
Token: SeIncreaseQuotaPrivilege	220	wmic.exe
Token: SeSecurityPrivilege	220	wmic.exe
Token: SeTakeOwnershipPrivilege	220	wmic.exe
Token: SeLoadDriverPrivilege	220	wmic.exe
Token: SeSystemProfilePrivilege	220	wmic.exe
Token: SeSystemtimePrivilege	220	wmic.exe
Token: SeProfSingleProcessPrivilege	220	wmic.exe
Token: SeIncBasePriorityPrivilege	220	wmic.exe
Token: SeCreatePagefilePrivilege	220	wmic.exe
Token: SeBackupPrivilege	220	wmic.exe
Token: SeRestorePrivilege	220	wmic.exe
Token: SeShutdownPrivilege	220	wmic.exe
Token: SeDebugPrivilege	220	wmic.exe
Token: SeSystemEnvironmentPrivilege	220	wmic.exe
Token: SeRemoteShutdownPrivilege	220	wmic.exe
Token: SeUndockPrivilege	220	wmic.exe
Token: SeManageVolumePrivilege	220	wmic.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 2472 wrote to memory of 4660	2472	d3ccce85ce8dfc4087cca43248f44920N.exe	87
PID 2472 wrote to memory of 4660	2472	d3ccce85ce8dfc4087cca43248f44920N.exe	87
PID 2472 wrote to memory of 2364	2472	d3ccce85ce8dfc4087cca43248f44920N.exe	90
PID 2472 wrote to memory of 2364	2472	d3ccce85ce8dfc4087cca43248f44920N.exe	90
PID 2472 wrote to memory of 3340	2472	d3ccce85ce8dfc4087cca43248f44920N.exe	92
PID 2472 wrote to memory of 3340	2472	d3ccce85ce8dfc4087cca43248f44920N.exe	92
PID 2472 wrote to memory of 2412	2472	d3ccce85ce8dfc4087cca43248f44920N.exe	94
PID 2472 wrote to memory of 2412	2472	d3ccce85ce8dfc4087cca43248f44920N.exe	94
PID 2472 wrote to memory of 1864	2472	d3ccce85ce8dfc4087cca43248f44920N.exe	103
PID 2472 wrote to memory of 1864	2472	d3ccce85ce8dfc4087cca43248f44920N.exe	103
PID 2472 wrote to memory of 220	2472	d3ccce85ce8dfc4087cca43248f44920N.exe	105
PID 2472 wrote to memory of 220	2472	d3ccce85ce8dfc4087cca43248f44920N.exe	105
PID 2472 wrote to memory of 1000	2472	d3ccce85ce8dfc4087cca43248f44920N.exe	107
PID 2472 wrote to memory of 1000	2472	d3ccce85ce8dfc4087cca43248f44920N.exe	107
PID 2472 wrote to memory of 4724	2472	d3ccce85ce8dfc4087cca43248f44920N.exe	109
PID 2472 wrote to memory of 4724	2472	d3ccce85ce8dfc4087cca43248f44920N.exe	109
PID 2472 wrote to memory of 3844	2472	d3ccce85ce8dfc4087cca43248f44920N.exe	111
PID 2472 wrote to memory of 3844	2472	d3ccce85ce8dfc4087cca43248f44920N.exe	111

C:\Users\Admin\AppData\Local\Temp\d3ccce85ce8dfc4087cca43248f44920N.exe
"C:\Users\Admin\AppData\Local\Temp\d3ccce85ce8dfc4087cca43248f44920N.exe"
1⤵
- Drops file in Drivers directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2472
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\d3ccce85ce8dfc4087cca43248f44920N.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4660
- 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:2364
- 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:3340
- 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:2412
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1864
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:220
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:1000
- 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:4724
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:3844

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\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
5824a6037c081fda5d46de274b6e2799

SHA1
526367a09300cbde430e8fb44e41cbe7a0937aac

SHA256
4d610d9cd32a20279c7133a726ff61820d6930e5aa18253ee1422f3a6f54953f

SHA512
a109b150f730cda78d5bee106bd232f9dca7500dfb7899c6919de2bd542e345ca271aa11809a24ea0a27dca158067ab3a2d5688ac0a2325185143245f1665582

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

Filesize
1KB

MD5
d3235ed022a42ec4338123ab87144afa

SHA1
5058608bc0deb720a585a2304a8f7cf63a50a315

SHA256
10663f5a1cb0afe5578f61ebaae2aafb363544e47b48521f9c23be9e6e431b27

SHA512
236761b7c68feca8bd62cba90cff0b25fac5613837aaa5d29ae823ace8b06a2057553cf7e72b11ccc59b6c289e471ca1bbac1a880aef5e2868875371a17c1abf

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

Filesize
1KB

MD5
e3340d31633b28bd092915b2450e6115

SHA1
50ba19635a2c47f62d3833672b300f266db9a16a

SHA256
bd03160d8d3d3c53fcf495f7e5066953355386873d6e56d806a3475dff52917d

SHA512
fdaa58d957b4869d4588c53d292510d4d2fc20a661faba0dd284d43f0dd7bb395a3ef318893bce60b13edd8357f31ac557a567ca4f4d412b54805e19c061e4ec

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_rsuox04w.zs0.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/2472-73-0x000001B2202A0000-0x000001B2202B2000-memory.dmp

Filesize
72KB

Download
memory/2472-0-0x00007FF839FB3000-0x00007FF839FB5000-memory.dmp

Filesize
8KB

Download
memory/2472-93-0x00007FF839FB0000-0x00007FF83AA71000-memory.dmp

Filesize
10.8MB

Download
memory/2472-77-0x00007FF839FB0000-0x00007FF83AA71000-memory.dmp

Filesize
10.8MB

Download
memory/2472-2-0x00007FF839FB0000-0x00007FF83AA71000-memory.dmp

Filesize
10.8MB

Download
memory/2472-1-0x000001B205B30000-0x000001B205B98000-memory.dmp

Filesize
416KB

Download
memory/2472-34-0x000001B2202C0000-0x000001B220336000-memory.dmp

Filesize
472KB

Download
memory/2472-35-0x000001B220340000-0x000001B220390000-memory.dmp

Filesize
320KB

Download
memory/2472-36-0x000001B207910000-0x000001B20792E000-memory.dmp

Filesize
120KB

Download
memory/2472-76-0x00007FF839FB3000-0x00007FF839FB5000-memory.dmp

Filesize
8KB

Download
memory/2472-72-0x000001B220260000-0x000001B22026A000-memory.dmp

Filesize
40KB

Download
memory/4660-14-0x00007FF839FB0000-0x00007FF83AA71000-memory.dmp

Filesize
10.8MB

Download
memory/4660-3-0x00000216C0960000-0x00000216C0982000-memory.dmp

Filesize
136KB

Download
memory/4660-15-0x00007FF839FB0000-0x00007FF83AA71000-memory.dmp

Filesize
10.8MB

Download
memory/4660-19-0x00007FF839FB0000-0x00007FF83AA71000-memory.dmp

Filesize
10.8MB

Download
memory/4660-4-0x00007FF839FB0000-0x00007FF83AA71000-memory.dmp

Filesize
10.8MB

Download
memory/4660-18-0x00007FF839FB0000-0x00007FF83AA71000-memory.dmp

Filesize
10.8MB

Download