umbral | 824d0e2ebaa40b7bca3bc0657338a13df78121172fe52e604f45c8033ab7537a

Analysis

max time kernel
93s
max time network
128s
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, 01:57

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General

Target
824d0e2ebaa40b7bca3bc0657338a13df78121172fe52e604f45c8033ab7537a.exe
Size 227KB
Sample240806-cdsbdawcmm
SHA256 824d0e2ebaa40b7bca3bc0657338a13df78121172fe52e604f45c8033ab7537a
MD5 ef323a7483653ffb1fc4ff036576e065
SHA1 80e63b57a7ad6394f778c7aa5a855520f1533589
SHA512 04785049f73acbacc2b0ea89e2bbc547ac6fa302eac4cbbd895f8d6a873c8b0dcfa8a8762d90847c9a0bf28862e12b294cb70f073019a6046bac104b9189ba7e
SSDEEP 6144:eloZM3fsXtioRkts/cnnK6cMluDdCFzQEb0CzFQMpnhb8e1msQci:IoZ1tlRk83MluDdCFzQEb0CzFQMpZ3K
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/4292-0-0x000001C9AE770000-0x000001C9AE7B0000-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

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
2640	powershell.exe
404	powershell.exe
4212	powershell.exe
1216	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	824d0e2ebaa40b7bca3bc0657338a13df78121172fe52e604f45c8033ab7537a.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
1984	cmd.exe
2924	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
4416	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2924	PING.EXE

Suspicious behavior: EnumeratesProcesses 11 IoCs

pid	Process
4292	824d0e2ebaa40b7bca3bc0657338a13df78121172fe52e604f45c8033ab7537a.exe
1216	powershell.exe
1216	powershell.exe
2640	powershell.exe
2640	powershell.exe
404	powershell.exe
404	powershell.exe
2772	powershell.exe
2772	powershell.exe
4212	powershell.exe
4212	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	4292	824d0e2ebaa40b7bca3bc0657338a13df78121172fe52e604f45c8033ab7537a.exe
Token: SeIncreaseQuotaPrivilege	2704	wmic.exe
Token: SeSecurityPrivilege	2704	wmic.exe
Token: SeTakeOwnershipPrivilege	2704	wmic.exe
Token: SeLoadDriverPrivilege	2704	wmic.exe
Token: SeSystemProfilePrivilege	2704	wmic.exe
Token: SeSystemtimePrivilege	2704	wmic.exe
Token: SeProfSingleProcessPrivilege	2704	wmic.exe
Token: SeIncBasePriorityPrivilege	2704	wmic.exe
Token: SeCreatePagefilePrivilege	2704	wmic.exe
Token: SeBackupPrivilege	2704	wmic.exe
Token: SeRestorePrivilege	2704	wmic.exe
Token: SeShutdownPrivilege	2704	wmic.exe
Token: SeDebugPrivilege	2704	wmic.exe
Token: SeSystemEnvironmentPrivilege	2704	wmic.exe
Token: SeRemoteShutdownPrivilege	2704	wmic.exe
Token: SeUndockPrivilege	2704	wmic.exe
Token: SeManageVolumePrivilege	2704	wmic.exe
Token: 33	2704	wmic.exe
Token: 34	2704	wmic.exe
Token: 35	2704	wmic.exe
Token: 36	2704	wmic.exe
Token: SeIncreaseQuotaPrivilege	2704	wmic.exe
Token: SeSecurityPrivilege	2704	wmic.exe
Token: SeTakeOwnershipPrivilege	2704	wmic.exe
Token: SeLoadDriverPrivilege	2704	wmic.exe
Token: SeSystemProfilePrivilege	2704	wmic.exe
Token: SeSystemtimePrivilege	2704	wmic.exe
Token: SeProfSingleProcessPrivilege	2704	wmic.exe
Token: SeIncBasePriorityPrivilege	2704	wmic.exe
Token: SeCreatePagefilePrivilege	2704	wmic.exe
Token: SeBackupPrivilege	2704	wmic.exe
Token: SeRestorePrivilege	2704	wmic.exe
Token: SeShutdownPrivilege	2704	wmic.exe
Token: SeDebugPrivilege	2704	wmic.exe
Token: SeSystemEnvironmentPrivilege	2704	wmic.exe
Token: SeRemoteShutdownPrivilege	2704	wmic.exe
Token: SeUndockPrivilege	2704	wmic.exe
Token: SeManageVolumePrivilege	2704	wmic.exe
Token: 33	2704	wmic.exe
Token: 34	2704	wmic.exe
Token: 35	2704	wmic.exe
Token: 36	2704	wmic.exe
Token: SeDebugPrivilege	1216	powershell.exe
Token: SeDebugPrivilege	2640	powershell.exe
Token: SeDebugPrivilege	404	powershell.exe
Token: SeDebugPrivilege	2772	powershell.exe
Token: SeIncreaseQuotaPrivilege	4664	wmic.exe
Token: SeSecurityPrivilege	4664	wmic.exe
Token: SeTakeOwnershipPrivilege	4664	wmic.exe
Token: SeLoadDriverPrivilege	4664	wmic.exe
Token: SeSystemProfilePrivilege	4664	wmic.exe
Token: SeSystemtimePrivilege	4664	wmic.exe
Token: SeProfSingleProcessPrivilege	4664	wmic.exe
Token: SeIncBasePriorityPrivilege	4664	wmic.exe
Token: SeCreatePagefilePrivilege	4664	wmic.exe
Token: SeBackupPrivilege	4664	wmic.exe
Token: SeRestorePrivilege	4664	wmic.exe
Token: SeShutdownPrivilege	4664	wmic.exe
Token: SeDebugPrivilege	4664	wmic.exe
Token: SeSystemEnvironmentPrivilege	4664	wmic.exe
Token: SeRemoteShutdownPrivilege	4664	wmic.exe
Token: SeUndockPrivilege	4664	wmic.exe
Token: SeManageVolumePrivilege	4664	wmic.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 4292 wrote to memory of 2704	4292	824d0e2ebaa40b7bca3bc0657338a13df78121172fe52e604f45c8033ab7537a.exe	87
PID 4292 wrote to memory of 2704	4292	824d0e2ebaa40b7bca3bc0657338a13df78121172fe52e604f45c8033ab7537a.exe	87
PID 4292 wrote to memory of 1120	4292	824d0e2ebaa40b7bca3bc0657338a13df78121172fe52e604f45c8033ab7537a.exe	91
PID 4292 wrote to memory of 1120	4292	824d0e2ebaa40b7bca3bc0657338a13df78121172fe52e604f45c8033ab7537a.exe	91
PID 4292 wrote to memory of 1216	4292	824d0e2ebaa40b7bca3bc0657338a13df78121172fe52e604f45c8033ab7537a.exe	93
PID 4292 wrote to memory of 1216	4292	824d0e2ebaa40b7bca3bc0657338a13df78121172fe52e604f45c8033ab7537a.exe	93
PID 4292 wrote to memory of 2640	4292	824d0e2ebaa40b7bca3bc0657338a13df78121172fe52e604f45c8033ab7537a.exe	95
PID 4292 wrote to memory of 2640	4292	824d0e2ebaa40b7bca3bc0657338a13df78121172fe52e604f45c8033ab7537a.exe	95
PID 4292 wrote to memory of 404	4292	824d0e2ebaa40b7bca3bc0657338a13df78121172fe52e604f45c8033ab7537a.exe	97
PID 4292 wrote to memory of 404	4292	824d0e2ebaa40b7bca3bc0657338a13df78121172fe52e604f45c8033ab7537a.exe	97
PID 4292 wrote to memory of 2772	4292	824d0e2ebaa40b7bca3bc0657338a13df78121172fe52e604f45c8033ab7537a.exe	99
PID 4292 wrote to memory of 2772	4292	824d0e2ebaa40b7bca3bc0657338a13df78121172fe52e604f45c8033ab7537a.exe	99
PID 4292 wrote to memory of 4664	4292	824d0e2ebaa40b7bca3bc0657338a13df78121172fe52e604f45c8033ab7537a.exe	101
PID 4292 wrote to memory of 4664	4292	824d0e2ebaa40b7bca3bc0657338a13df78121172fe52e604f45c8033ab7537a.exe	101
PID 4292 wrote to memory of 4512	4292	824d0e2ebaa40b7bca3bc0657338a13df78121172fe52e604f45c8033ab7537a.exe	103
PID 4292 wrote to memory of 4512	4292	824d0e2ebaa40b7bca3bc0657338a13df78121172fe52e604f45c8033ab7537a.exe	103
PID 4292 wrote to memory of 3428	4292	824d0e2ebaa40b7bca3bc0657338a13df78121172fe52e604f45c8033ab7537a.exe	105
PID 4292 wrote to memory of 3428	4292	824d0e2ebaa40b7bca3bc0657338a13df78121172fe52e604f45c8033ab7537a.exe	105
PID 4292 wrote to memory of 4212	4292	824d0e2ebaa40b7bca3bc0657338a13df78121172fe52e604f45c8033ab7537a.exe	107
PID 4292 wrote to memory of 4212	4292	824d0e2ebaa40b7bca3bc0657338a13df78121172fe52e604f45c8033ab7537a.exe	107
PID 4292 wrote to memory of 4416	4292	824d0e2ebaa40b7bca3bc0657338a13df78121172fe52e604f45c8033ab7537a.exe	109
PID 4292 wrote to memory of 4416	4292	824d0e2ebaa40b7bca3bc0657338a13df78121172fe52e604f45c8033ab7537a.exe	109
PID 4292 wrote to memory of 1984	4292	824d0e2ebaa40b7bca3bc0657338a13df78121172fe52e604f45c8033ab7537a.exe	111
PID 4292 wrote to memory of 1984	4292	824d0e2ebaa40b7bca3bc0657338a13df78121172fe52e604f45c8033ab7537a.exe	111
PID 1984 wrote to memory of 2924	1984	cmd.exe	113
PID 1984 wrote to memory of 2924	1984	cmd.exe	113

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
1120	attrib.exe

C:\Users\Admin\AppData\Local\Temp\824d0e2ebaa40b7bca3bc0657338a13df78121172fe52e604f45c8033ab7537a.exe
"C:\Users\Admin\AppData\Local\Temp\824d0e2ebaa40b7bca3bc0657338a13df78121172fe52e604f45c8033ab7537a.exe"
1⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4292
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2704
- C:\Windows\SYSTEM32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\824d0e2ebaa40b7bca3bc0657338a13df78121172fe52e604f45c8033ab7537a.exe"
  2⤵
  - Views/modifies file attributes
  PID:1120
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\824d0e2ebaa40b7bca3bc0657338a13df78121172fe52e604f45c8033ab7537a.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1216
- 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:2640
- 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:404
- 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:2772
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:4664
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:4512
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:3428
- 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:4212
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:4416
- C:\Windows\SYSTEM32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\824d0e2ebaa40b7bca3bc0657338a13df78121172fe52e604f45c8033ab7537a.exe" && pause
  2⤵
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:1984
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:2924

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 f97ff12a8abf4bf88bb6497bd2ac2da12628c8847a8ba5a9026bdbb76507cdfb
MD5 77d622bb1a5b250869a3238b9bc1402b
SHA1 d47f4003c2554b9dfc4c16f22460b331886b191b
SHA512 d6789b5499f23c9035375a102271e17a8a82e57d6f5312fa24242e08a83efdeb8becb7622f55c4cf1b89c7d864b445df11f4d994cf7e2f87a900535bcca12fd9
MD5 SHA1 SHA512

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StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 948B
SHA256 de2dafd4e7bbbbb48dc2f7dea454880cb7f8fb4c3e2152cfa8c0bd6b6975fcf1
MD5 3fbd20a8b4a10eefcf61f5edf2a19963
SHA1 be7d35b2d1a6292b331f5162f1e765dc9f049c76
SHA512 1103126d572910329f0ecfecc80b0d2682a14e7672fefd7b55fc9ab69649db41df9b20796971f0d6d572a928b0b3e9f0536c7ab32a47967cb05308b956b37dfb
MD5 SHA1 SHA512

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StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 1KB
SHA256 101f5fe8a4192f14e9f0a12c105ca81c9f176860930af44747185dd1bedb59a4
MD5 227556da5e65f6819f477756808c17e4
SHA1 6ffce766e881ca2a60180bb25f4981b183f78279
SHA512 d46b935809d2c4b7a041ad790f2db11c0a808df022c91ae9152b8769021b884fde49653a7a46557ef9ee65e274fe0b6c8503df9b50e6b3b849fefacf51f8bd6a
MD5 SHA1 SHA512

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StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 1KB
SHA256 e9c4723a5fe34e081c3d2f548a1d472394cc7aa58056fcf44ca542061381243a
MD5 ec79fae4e7c09310ebf4f2d85a33a638
SHA1 f2bdd995b12e65e7ed437d228f22223b59e76efb
SHA512 af9dda12f6bb388d826fe03a4a8beed9bda23a978aa55a2af6a43271660ee896a7ee3bcf2c4d2f1e6180902791d8c23560f1c2ec097a501d8c6f4f6c49075625
MD5 SHA1 SHA512

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__PSScriptPolicyTest_gmzoxpm1.3x3.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_gmzoxpm1.3x3.ps1
Size 60B
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
MD5 SHA1 SHA512

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memory/1216-9-0x0000025E52030000-0x0000025E52052000-memory.dmp

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memory/1216-14-0x00007FFC43A60000-0x00007FFC44521000-memory.dmp

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memory/1216-15-0x00007FFC43A60000-0x00007FFC44521000-memory.dmp

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memory/1216-18-0x00007FFC43A60000-0x00007FFC44521000-memory.dmp

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memory/1216-3-0x00007FFC43A60000-0x00007FFC44521000-memory.dmp

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memory/4292-34-0x000001C9C8F90000-0x000001C9C8FE0000-memory.dmp

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memory/4292-33-0x000001C9C8EA0000-0x000001C9C8F16000-memory.dmp

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memory/4292-35-0x000001C9C8E70000-0x000001C9C8E8E000-memory.dmp

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memory/4292-1-0x00007FFC43A63000-0x00007FFC43A65000-memory.dmp

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memory/4292-0-0x000001C9AE770000-0x000001C9AE7B0000-memory.dmp

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memory/4292-71-0x000001C9C8F20000-0x000001C9C8F2A000-memory.dmp

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memory/4292-72-0x000001C9C8F50000-0x000001C9C8F62000-memory.dmp

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memory/4292-2-0x00007FFC43A60000-0x00007FFC44521000-memory.dmp

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memory/4292-90-0x00007FFC43A60000-0x00007FFC44521000-memory.dmp

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