umbral | 5a2904a05d5d2f5d3d3ef44bdf54e74341ae9b54ba5f6545b37acf187eec4f84

Analysis

max time kernel
95s
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 07:55

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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/1812-1-0x000001CB0FDE0000-0x000001CB0FE20000-memory.dmp	family_umbral

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

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
2668	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
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

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
3760	wmic.exe

Suspicious behavior: EnumeratesProcesses 10 IoCs

pid	Process
2668	powershell.exe
2668	powershell.exe
1784	powershell.exe
1784	powershell.exe
3744	powershell.exe
3744	powershell.exe
1088	powershell.exe
1088	powershell.exe
2052	powershell.exe
2052	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	1812	5a2904a05d5d2f5d3d3ef44bdf54e74341ae9b54ba5f6545b37acf187eec4f84.exe
Token: SeDebugPrivilege	2668	powershell.exe
Token: SeDebugPrivilege	1784	powershell.exe
Token: SeDebugPrivilege	3744	powershell.exe
Token: SeDebugPrivilege	1088	powershell.exe
Token: SeIncreaseQuotaPrivilege	1368	wmic.exe
Token: SeSecurityPrivilege	1368	wmic.exe
Token: SeTakeOwnershipPrivilege	1368	wmic.exe
Token: SeLoadDriverPrivilege	1368	wmic.exe
Token: SeSystemProfilePrivilege	1368	wmic.exe
Token: SeSystemtimePrivilege	1368	wmic.exe
Token: SeProfSingleProcessPrivilege	1368	wmic.exe
Token: SeIncBasePriorityPrivilege	1368	wmic.exe
Token: SeCreatePagefilePrivilege	1368	wmic.exe
Token: SeBackupPrivilege	1368	wmic.exe
Token: SeRestorePrivilege	1368	wmic.exe
Token: SeShutdownPrivilege	1368	wmic.exe
Token: SeDebugPrivilege	1368	wmic.exe
Token: SeSystemEnvironmentPrivilege	1368	wmic.exe
Token: SeRemoteShutdownPrivilege	1368	wmic.exe
Token: SeUndockPrivilege	1368	wmic.exe
Token: SeManageVolumePrivilege	1368	wmic.exe
Token: 33	1368	wmic.exe
Token: 34	1368	wmic.exe
Token: 35	1368	wmic.exe
Token: 36	1368	wmic.exe
Token: SeIncreaseQuotaPrivilege	1368	wmic.exe
Token: SeSecurityPrivilege	1368	wmic.exe
Token: SeTakeOwnershipPrivilege	1368	wmic.exe
Token: SeLoadDriverPrivilege	1368	wmic.exe
Token: SeSystemProfilePrivilege	1368	wmic.exe
Token: SeSystemtimePrivilege	1368	wmic.exe
Token: SeProfSingleProcessPrivilege	1368	wmic.exe
Token: SeIncBasePriorityPrivilege	1368	wmic.exe
Token: SeCreatePagefilePrivilege	1368	wmic.exe
Token: SeBackupPrivilege	1368	wmic.exe
Token: SeRestorePrivilege	1368	wmic.exe
Token: SeShutdownPrivilege	1368	wmic.exe
Token: SeDebugPrivilege	1368	wmic.exe
Token: SeSystemEnvironmentPrivilege	1368	wmic.exe
Token: SeRemoteShutdownPrivilege	1368	wmic.exe
Token: SeUndockPrivilege	1368	wmic.exe
Token: SeManageVolumePrivilege	1368	wmic.exe
Token: 33	1368	wmic.exe
Token: 34	1368	wmic.exe
Token: 35	1368	wmic.exe
Token: 36	1368	wmic.exe
Token: SeIncreaseQuotaPrivilege	4012	wmic.exe
Token: SeSecurityPrivilege	4012	wmic.exe
Token: SeTakeOwnershipPrivilege	4012	wmic.exe
Token: SeLoadDriverPrivilege	4012	wmic.exe
Token: SeSystemProfilePrivilege	4012	wmic.exe
Token: SeSystemtimePrivilege	4012	wmic.exe
Token: SeProfSingleProcessPrivilege	4012	wmic.exe
Token: SeIncBasePriorityPrivilege	4012	wmic.exe
Token: SeCreatePagefilePrivilege	4012	wmic.exe
Token: SeBackupPrivilege	4012	wmic.exe
Token: SeRestorePrivilege	4012	wmic.exe
Token: SeShutdownPrivilege	4012	wmic.exe
Token: SeDebugPrivilege	4012	wmic.exe
Token: SeSystemEnvironmentPrivilege	4012	wmic.exe
Token: SeRemoteShutdownPrivilege	4012	wmic.exe
Token: SeUndockPrivilege	4012	wmic.exe
Token: SeManageVolumePrivilege	4012	wmic.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 1812 wrote to memory of 2668	1812	5a2904a05d5d2f5d3d3ef44bdf54e74341ae9b54ba5f6545b37acf187eec4f84.exe	82
PID 1812 wrote to memory of 2668	1812	5a2904a05d5d2f5d3d3ef44bdf54e74341ae9b54ba5f6545b37acf187eec4f84.exe	82
PID 1812 wrote to memory of 1784	1812	5a2904a05d5d2f5d3d3ef44bdf54e74341ae9b54ba5f6545b37acf187eec4f84.exe	85
PID 1812 wrote to memory of 1784	1812	5a2904a05d5d2f5d3d3ef44bdf54e74341ae9b54ba5f6545b37acf187eec4f84.exe	85
PID 1812 wrote to memory of 3744	1812	5a2904a05d5d2f5d3d3ef44bdf54e74341ae9b54ba5f6545b37acf187eec4f84.exe	88
PID 1812 wrote to memory of 3744	1812	5a2904a05d5d2f5d3d3ef44bdf54e74341ae9b54ba5f6545b37acf187eec4f84.exe	88
PID 1812 wrote to memory of 1088	1812	5a2904a05d5d2f5d3d3ef44bdf54e74341ae9b54ba5f6545b37acf187eec4f84.exe	92
PID 1812 wrote to memory of 1088	1812	5a2904a05d5d2f5d3d3ef44bdf54e74341ae9b54ba5f6545b37acf187eec4f84.exe	92
PID 1812 wrote to memory of 1368	1812	5a2904a05d5d2f5d3d3ef44bdf54e74341ae9b54ba5f6545b37acf187eec4f84.exe	95
PID 1812 wrote to memory of 1368	1812	5a2904a05d5d2f5d3d3ef44bdf54e74341ae9b54ba5f6545b37acf187eec4f84.exe	95
PID 1812 wrote to memory of 4012	1812	5a2904a05d5d2f5d3d3ef44bdf54e74341ae9b54ba5f6545b37acf187eec4f84.exe	99
PID 1812 wrote to memory of 4012	1812	5a2904a05d5d2f5d3d3ef44bdf54e74341ae9b54ba5f6545b37acf187eec4f84.exe	99
PID 1812 wrote to memory of 3368	1812	5a2904a05d5d2f5d3d3ef44bdf54e74341ae9b54ba5f6545b37acf187eec4f84.exe	101
PID 1812 wrote to memory of 3368	1812	5a2904a05d5d2f5d3d3ef44bdf54e74341ae9b54ba5f6545b37acf187eec4f84.exe	101
PID 1812 wrote to memory of 2052	1812	5a2904a05d5d2f5d3d3ef44bdf54e74341ae9b54ba5f6545b37acf187eec4f84.exe	103
PID 1812 wrote to memory of 2052	1812	5a2904a05d5d2f5d3d3ef44bdf54e74341ae9b54ba5f6545b37acf187eec4f84.exe	103
PID 1812 wrote to memory of 3760	1812	5a2904a05d5d2f5d3d3ef44bdf54e74341ae9b54ba5f6545b37acf187eec4f84.exe	105
PID 1812 wrote to memory of 3760	1812	5a2904a05d5d2f5d3d3ef44bdf54e74341ae9b54ba5f6545b37acf187eec4f84.exe	105

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:1812
- 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:2668
- 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:1784
- 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:3744
- 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:1088
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1368
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:4012
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:3368
- 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:2052
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:3760

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
77d622bb1a5b250869a3238b9bc1402b

SHA1
d47f4003c2554b9dfc4c16f22460b331886b191b

SHA256
f97ff12a8abf4bf88bb6497bd2ac2da12628c8847a8ba5a9026bdbb76507cdfb

SHA512
d6789b5499f23c9035375a102271e17a8a82e57d6f5312fa24242e08a83efdeb8becb7622f55c4cf1b89c7d864b445df11f4d994cf7e2f87a900535bcca12fd9

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

Filesize
948B

MD5
966914e2e771de7a4a57a95b6ecfa8a9

SHA1
7a32282fd51dd032967ed4d9a40cc57e265aeff2

SHA256
98d3c70d7004fa807897317bd6cd3e977b9b6c72d4d2565aca0f9f8b1c315cba

SHA512
dc39c7124a9c7c8d4c7e8e16290c46360b8d9a8f4e43edaacbbeb09bdcf20159a53db54d2b322372001b6a3de52b2f88e9088b5fdbc7638816ae0d122bb015f5

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

Filesize
1KB

MD5
548dd08570d121a65e82abb7171cae1c

SHA1
1a1b5084b3a78f3acd0d811cc79dbcac121217ab

SHA256
cdf17b8532ebcebac3cfe23954a30aa32edd268d040da79c82687e4ccb044adc

SHA512
37b98b09178b51eec9599af90d027d2f1028202efc1633047e16e41f1a95610984af5620baac07db085ccfcb96942aafffad17aa1f44f63233e83869dc9f697b

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

Filesize
1KB

MD5
ded10d75f0c158ab3c672f4097f3f414

SHA1
e8eb411226238ee4ec6e8ef69f03171c99d89bc2

SHA256
65523e47057f5b14035e727c71136e7a88f88c8a8956729f9f74be4b7343a5a2

SHA512
ca925e939197b60f954f071bcd1beb98a4f947759b246afa3c50e5525b2cfab3db490bc3ed4cf8e2f2e5452a8b759ecfbc0a4d0ec904b00077b86212888876d5

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_ldhsrnrn.doz.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1812-69-0x000001CB102D0000-0x000001CB102DA000-memory.dmp

Filesize
40KB

Download
memory/1812-33-0x000001CB2A630000-0x000001CB2A64E000-memory.dmp

Filesize
120KB

Download
memory/1812-88-0x00007FFFF3A30000-0x00007FFFF44F1000-memory.dmp

Filesize
10.8MB

Download
memory/1812-70-0x000001CB10310000-0x000001CB10322000-memory.dmp

Filesize
72KB

Download
memory/1812-2-0x00007FFFF3A30000-0x00007FFFF44F1000-memory.dmp

Filesize
10.8MB

Download
memory/1812-31-0x000001CB2A5B0000-0x000001CB2A626000-memory.dmp

Filesize
472KB

Download
memory/1812-32-0x000001CB2A530000-0x000001CB2A580000-memory.dmp

Filesize
320KB

Download
memory/1812-0-0x00007FFFF3A33000-0x00007FFFF3A35000-memory.dmp

Filesize
8KB

Download
memory/1812-1-0x000001CB0FDE0000-0x000001CB0FE20000-memory.dmp

Filesize
256KB

Download
memory/2668-15-0x00007FFFF3A30000-0x00007FFFF44F1000-memory.dmp

Filesize
10.8MB

Download
memory/2668-14-0x00007FFFF3A30000-0x00007FFFF44F1000-memory.dmp

Filesize
10.8MB

Download
memory/2668-12-0x000002CF51A90000-0x000002CF51AB2000-memory.dmp

Filesize
136KB

Download
memory/2668-13-0x00007FFFF3A30000-0x00007FFFF44F1000-memory.dmp

Filesize
10.8MB

Download
memory/2668-18-0x00007FFFF3A30000-0x00007FFFF44F1000-memory.dmp

Filesize
10.8MB

Download