umbral | 5a2904a05d5d2f5d3d3ef44bdf54e74341ae9b54ba5f6545b37acf187eec4f84

Analysis

max time kernel
92s
max time network
96s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
08/06/2024, 01:12

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General

Target

5a2904a05d5d2f5d3d3ef44bdf54e74341ae9b54ba5f6545b37acf187eec4f84.exe
Size

229KB
MD5

1adeea63d576dea9add98e01e9fe78b4
SHA1

8f754fd661d9ce2e9e9a7278b4dd7096b13fc585
SHA256

5a2904a05d5d2f5d3d3ef44bdf54e74341ae9b54ba5f6545b37acf187eec4f84
SHA512

0ba3c5555273a15c5406f0bd1b5f1a3888814bdbb4130f80eae1f973497c4e5d81a92ed0797a55316b358a42a955fe44f476d1e0e90c15211dc30f4dd20c58cb
SSDEEP

6144:lloZMCrIkd8g+EtXHkv/iD4sodaBPUonIWvRsY99ib8e1miLZi:noZZL+EP8sodaBPUonIWvRsY9wfLA

Score

10^/10

umbral execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral2/memory/4968-0-0x000001FCD8700000-0x000001FCD8740000-memory.dmp	family_umbral

Umbral
Umbral stealer is an opensource moduler stealer written in C#.
stealer umbral

Detects executables attemping to enumerate video devices using WMI 1 IoCs

resource	yara_rule
behavioral2/memory/4968-0-0x000001FCD8700000-0x000001FCD8740000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_WMI_EnumerateVideoDevice

Detects executables containing possible sandbox analysis VM names 1 IoCs

resource	yara_rule
behavioral2/memory/4968-0-0x000001FCD8700000-0x000001FCD8740000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_SandboxComputerNames

Detects executables containing possible sandbox analysis VM usernames 1 IoCs

resource	yara_rule
behavioral2/memory/4968-0-0x000001FCD8700000-0x000001FCD8740000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_SandboxUserNames

Detects executables containing possible sandbox system UUIDs 1 IoCs

resource	yara_rule
behavioral2/memory/4968-0-0x000001FCD8700000-0x000001FCD8740000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_SandboxSystemUUIDs

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
432	powershell.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
20	discord.com
21	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
14	ip-api.com

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
3404	wmic.exe

Suspicious behavior: EnumeratesProcesses 10 IoCs

pid	Process
432	powershell.exe
432	powershell.exe
4768	powershell.exe
4768	powershell.exe
940	powershell.exe
940	powershell.exe
2240	powershell.exe
2240	powershell.exe
1420	powershell.exe
1420	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	4968	5a2904a05d5d2f5d3d3ef44bdf54e74341ae9b54ba5f6545b37acf187eec4f84.exe
Token: SeDebugPrivilege	432	powershell.exe
Token: SeDebugPrivilege	4768	powershell.exe
Token: SeDebugPrivilege	940	powershell.exe
Token: SeDebugPrivilege	2240	powershell.exe
Token: SeIncreaseQuotaPrivilege	8	wmic.exe
Token: SeSecurityPrivilege	8	wmic.exe
Token: SeTakeOwnershipPrivilege	8	wmic.exe
Token: SeLoadDriverPrivilege	8	wmic.exe
Token: SeSystemProfilePrivilege	8	wmic.exe
Token: SeSystemtimePrivilege	8	wmic.exe
Token: SeProfSingleProcessPrivilege	8	wmic.exe
Token: SeIncBasePriorityPrivilege	8	wmic.exe
Token: SeCreatePagefilePrivilege	8	wmic.exe
Token: SeBackupPrivilege	8	wmic.exe
Token: SeRestorePrivilege	8	wmic.exe
Token: SeShutdownPrivilege	8	wmic.exe
Token: SeDebugPrivilege	8	wmic.exe
Token: SeSystemEnvironmentPrivilege	8	wmic.exe
Token: SeRemoteShutdownPrivilege	8	wmic.exe
Token: SeUndockPrivilege	8	wmic.exe
Token: SeManageVolumePrivilege	8	wmic.exe
Token: 33	8	wmic.exe
Token: 34	8	wmic.exe
Token: 35	8	wmic.exe
Token: 36	8	wmic.exe
Token: SeIncreaseQuotaPrivilege	8	wmic.exe
Token: SeSecurityPrivilege	8	wmic.exe
Token: SeTakeOwnershipPrivilege	8	wmic.exe
Token: SeLoadDriverPrivilege	8	wmic.exe
Token: SeSystemProfilePrivilege	8	wmic.exe
Token: SeSystemtimePrivilege	8	wmic.exe
Token: SeProfSingleProcessPrivilege	8	wmic.exe
Token: SeIncBasePriorityPrivilege	8	wmic.exe
Token: SeCreatePagefilePrivilege	8	wmic.exe
Token: SeBackupPrivilege	8	wmic.exe
Token: SeRestorePrivilege	8	wmic.exe
Token: SeShutdownPrivilege	8	wmic.exe
Token: SeDebugPrivilege	8	wmic.exe
Token: SeSystemEnvironmentPrivilege	8	wmic.exe
Token: SeRemoteShutdownPrivilege	8	wmic.exe
Token: SeUndockPrivilege	8	wmic.exe
Token: SeManageVolumePrivilege	8	wmic.exe
Token: 33	8	wmic.exe
Token: 34	8	wmic.exe
Token: 35	8	wmic.exe
Token: 36	8	wmic.exe
Token: SeIncreaseQuotaPrivilege	560	wmic.exe
Token: SeSecurityPrivilege	560	wmic.exe
Token: SeTakeOwnershipPrivilege	560	wmic.exe
Token: SeLoadDriverPrivilege	560	wmic.exe
Token: SeSystemProfilePrivilege	560	wmic.exe
Token: SeSystemtimePrivilege	560	wmic.exe
Token: SeProfSingleProcessPrivilege	560	wmic.exe
Token: SeIncBasePriorityPrivilege	560	wmic.exe
Token: SeCreatePagefilePrivilege	560	wmic.exe
Token: SeBackupPrivilege	560	wmic.exe
Token: SeRestorePrivilege	560	wmic.exe
Token: SeShutdownPrivilege	560	wmic.exe
Token: SeDebugPrivilege	560	wmic.exe
Token: SeSystemEnvironmentPrivilege	560	wmic.exe
Token: SeRemoteShutdownPrivilege	560	wmic.exe
Token: SeUndockPrivilege	560	wmic.exe
Token: SeManageVolumePrivilege	560	wmic.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 4968 wrote to memory of 432	4968	5a2904a05d5d2f5d3d3ef44bdf54e74341ae9b54ba5f6545b37acf187eec4f84.exe	82
PID 4968 wrote to memory of 432	4968	5a2904a05d5d2f5d3d3ef44bdf54e74341ae9b54ba5f6545b37acf187eec4f84.exe	82
PID 4968 wrote to memory of 4768	4968	5a2904a05d5d2f5d3d3ef44bdf54e74341ae9b54ba5f6545b37acf187eec4f84.exe	85
PID 4968 wrote to memory of 4768	4968	5a2904a05d5d2f5d3d3ef44bdf54e74341ae9b54ba5f6545b37acf187eec4f84.exe	85
PID 4968 wrote to memory of 940	4968	5a2904a05d5d2f5d3d3ef44bdf54e74341ae9b54ba5f6545b37acf187eec4f84.exe	89
PID 4968 wrote to memory of 940	4968	5a2904a05d5d2f5d3d3ef44bdf54e74341ae9b54ba5f6545b37acf187eec4f84.exe	89
PID 4968 wrote to memory of 2240	4968	5a2904a05d5d2f5d3d3ef44bdf54e74341ae9b54ba5f6545b37acf187eec4f84.exe	91
PID 4968 wrote to memory of 2240	4968	5a2904a05d5d2f5d3d3ef44bdf54e74341ae9b54ba5f6545b37acf187eec4f84.exe	91
PID 4968 wrote to memory of 8	4968	5a2904a05d5d2f5d3d3ef44bdf54e74341ae9b54ba5f6545b37acf187eec4f84.exe	93
PID 4968 wrote to memory of 8	4968	5a2904a05d5d2f5d3d3ef44bdf54e74341ae9b54ba5f6545b37acf187eec4f84.exe	93
PID 4968 wrote to memory of 560	4968	5a2904a05d5d2f5d3d3ef44bdf54e74341ae9b54ba5f6545b37acf187eec4f84.exe	96
PID 4968 wrote to memory of 560	4968	5a2904a05d5d2f5d3d3ef44bdf54e74341ae9b54ba5f6545b37acf187eec4f84.exe	96
PID 4968 wrote to memory of 1580	4968	5a2904a05d5d2f5d3d3ef44bdf54e74341ae9b54ba5f6545b37acf187eec4f84.exe	98
PID 4968 wrote to memory of 1580	4968	5a2904a05d5d2f5d3d3ef44bdf54e74341ae9b54ba5f6545b37acf187eec4f84.exe	98
PID 4968 wrote to memory of 1420	4968	5a2904a05d5d2f5d3d3ef44bdf54e74341ae9b54ba5f6545b37acf187eec4f84.exe	100
PID 4968 wrote to memory of 1420	4968	5a2904a05d5d2f5d3d3ef44bdf54e74341ae9b54ba5f6545b37acf187eec4f84.exe	100
PID 4968 wrote to memory of 3404	4968	5a2904a05d5d2f5d3d3ef44bdf54e74341ae9b54ba5f6545b37acf187eec4f84.exe	102
PID 4968 wrote to memory of 3404	4968	5a2904a05d5d2f5d3d3ef44bdf54e74341ae9b54ba5f6545b37acf187eec4f84.exe	102

C:\Users\Admin\AppData\Local\Temp\5a2904a05d5d2f5d3d3ef44bdf54e74341ae9b54ba5f6545b37acf187eec4f84.exe
"C:\Users\Admin\AppData\Local\Temp\5a2904a05d5d2f5d3d3ef44bdf54e74341ae9b54ba5f6545b37acf187eec4f84.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4968
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\5a2904a05d5d2f5d3d3ef44bdf54e74341ae9b54ba5f6545b37acf187eec4f84.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:432
- 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⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4768
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Get-ItemPropertyValue -Path HKCU:SOFTWARE\Roblox\RobloxStudioBrowser\roblox.com -Name .ROBLOSECURITY
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:940
- 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:2240
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:8
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:560
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:1580
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Get-ItemPropertyValue -Path 'HKLM:System\CurrentControlSet\Control\Session Manager\Environment' -Name PROCESSOR_IDENTIFIER
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  PID:1420
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:3404

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

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
985b3105d8889886d6fd953575c54e08

SHA1
0f9a041240a344d82bac0a180520e7982c15f3cd

SHA256
5178fdd457eb3eb25c8f72ed4c22c582a83de0d324db66d0446d660f226e944d

SHA512
0fd59bc4886b70aa3b7eeeaa23229b7fdc93410ca7f8452860e4a1bbda2559eaa5e4b05c3ec2d85f7d648daf3c16741f4c2c18f2dd3bae4cc4a4e57ae4f665b0

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

Filesize
1KB

MD5
88be3bc8a7f90e3953298c0fdbec4d72

SHA1
f4969784ad421cc80ef45608727aacd0f6bf2e4b

SHA256
533c8470b41084e40c5660569ebbdb7496520d449629a235e8053e84025f348a

SHA512
4fce64e2dacddbc03314048fef1ce356ee2647c14733da121c23c65507eeb8d721d6b690ad5463319b364dc4fa95904ad6ab096907f32918e3406ef438a6ef7c

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

Filesize
1KB

MD5
029c97213fd7c2402baeb47de28c29b5

SHA1
d58a8bed559cf52d50ea15de19adf54228ce6e01

SHA256
d14c62a953c2854dab9da684158dfc76837b9d5629f019e21812a89910d5ebe7

SHA512
390da24c9732dbbcd20f2394aea851d480ee348c0a345778710e22084a2f1c2ab9cf93879613ee0cd107ed6a73930806bd8425bcd35036e1b3bf464e8c5a8210

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_3ccm11ix.kq0.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/432-6-0x000001A3B61D0000-0x000001A3B61F2000-memory.dmp

Filesize
136KB

Download
memory/432-14-0x00007FFE7B8E0000-0x00007FFE7C3A1000-memory.dmp

Filesize
10.8MB

Download
memory/432-15-0x00007FFE7B8E0000-0x00007FFE7C3A1000-memory.dmp

Filesize
10.8MB

Download
memory/432-18-0x00007FFE7B8E0000-0x00007FFE7C3A1000-memory.dmp

Filesize
10.8MB

Download
memory/432-3-0x00007FFE7B8E0000-0x00007FFE7C3A1000-memory.dmp

Filesize
10.8MB

Download
memory/4968-32-0x000001FCF2EB0000-0x000001FCF2F00000-memory.dmp

Filesize
320KB

Download
memory/4968-31-0x000001FCF2E30000-0x000001FCF2EA6000-memory.dmp

Filesize
472KB

Download
memory/4968-33-0x000001FCF2DB0000-0x000001FCF2DCE000-memory.dmp

Filesize
120KB

Download
memory/4968-1-0x00007FFE7B8E3000-0x00007FFE7B8E5000-memory.dmp

Filesize
8KB

Download
memory/4968-0-0x000001FCD8700000-0x000001FCD8740000-memory.dmp

Filesize
256KB

Download
memory/4968-69-0x000001FCF2DF0000-0x000001FCF2DFA000-memory.dmp

Filesize
40KB

Download
memory/4968-70-0x000001FCF30B0000-0x000001FCF30C2000-memory.dmp

Filesize
72KB

Download
memory/4968-2-0x00007FFE7B8E0000-0x00007FFE7C3A1000-memory.dmp

Filesize
10.8MB

Download
memory/4968-88-0x000001FCF2F00000-0x000001FCF30A9000-memory.dmp

Filesize
1.7MB

Download
memory/4968-89-0x00007FFE7B8E0000-0x00007FFE7C3A1000-memory.dmp

Filesize
10.8MB

Download