umbral | 628d7cd6016b226c4e5e5252b29dc89e42d30ffebfb489e36857079aad591ce6

Analysis

max time kernel
140s
max time network
123s
platform
windows10-2004_x64
resource
win10v2004-20240419-en
resource tags

arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
submitted
07-05-2024 17:37

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General

Target

628d7cd6016b226c4e5e5252b29dc89e42d30ffebfb489e36857079aad591ce6.exe
Size

232KB
MD5

afbe250f9d941daf1fc895e29d0b2821
SHA1

9aeaa55efa56702a0c2694ff2de3a5c6df7b03ac
SHA256

628d7cd6016b226c4e5e5252b29dc89e42d30ffebfb489e36857079aad591ce6
SHA512

177ddc51032af306d32c0826efddfa3be5e68621b440be764fba7ad37fd982fb58d7e902e4eb258fe50bbd236f82457e45e7d12a885c78314b304e72fb0f2c94
SSDEEP

6144:tloZMDXU9Zx0kt8X0/PSCsMpwpf3tW+x5R0STTKN0b8e1mKISi:voZnf0kkPQwpf3tW+x5R0STTKm2

Score

10^/10

umbral execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral2/memory/4556-0-0x000001C5B5F20000-0x000001C5B5F60000-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
3092	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	628d7cd6016b226c4e5e5252b29dc89e42d30ffebfb489e36857079aad591ce6.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
8	ip-api.com

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
4220	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
4764	PING.EXE

Suspicious behavior: EnumeratesProcesses 11 IoCs

pid	Process
4556	628d7cd6016b226c4e5e5252b29dc89e42d30ffebfb489e36857079aad591ce6.exe
3092	powershell.exe
3092	powershell.exe
2516	powershell.exe
2516	powershell.exe
2996	powershell.exe
2996	powershell.exe
2224	powershell.exe
2224	powershell.exe
1236	powershell.exe
1236	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	4556	628d7cd6016b226c4e5e5252b29dc89e42d30ffebfb489e36857079aad591ce6.exe
Token: SeIncreaseQuotaPrivilege	1984	wmic.exe
Token: SeSecurityPrivilege	1984	wmic.exe
Token: SeTakeOwnershipPrivilege	1984	wmic.exe
Token: SeLoadDriverPrivilege	1984	wmic.exe
Token: SeSystemProfilePrivilege	1984	wmic.exe
Token: SeSystemtimePrivilege	1984	wmic.exe
Token: SeProfSingleProcessPrivilege	1984	wmic.exe
Token: SeIncBasePriorityPrivilege	1984	wmic.exe
Token: SeCreatePagefilePrivilege	1984	wmic.exe
Token: SeBackupPrivilege	1984	wmic.exe
Token: SeRestorePrivilege	1984	wmic.exe
Token: SeShutdownPrivilege	1984	wmic.exe
Token: SeDebugPrivilege	1984	wmic.exe
Token: SeSystemEnvironmentPrivilege	1984	wmic.exe
Token: SeRemoteShutdownPrivilege	1984	wmic.exe
Token: SeUndockPrivilege	1984	wmic.exe
Token: SeManageVolumePrivilege	1984	wmic.exe
Token: 33	1984	wmic.exe
Token: 34	1984	wmic.exe
Token: 35	1984	wmic.exe
Token: 36	1984	wmic.exe
Token: SeIncreaseQuotaPrivilege	1984	wmic.exe
Token: SeSecurityPrivilege	1984	wmic.exe
Token: SeTakeOwnershipPrivilege	1984	wmic.exe
Token: SeLoadDriverPrivilege	1984	wmic.exe
Token: SeSystemProfilePrivilege	1984	wmic.exe
Token: SeSystemtimePrivilege	1984	wmic.exe
Token: SeProfSingleProcessPrivilege	1984	wmic.exe
Token: SeIncBasePriorityPrivilege	1984	wmic.exe
Token: SeCreatePagefilePrivilege	1984	wmic.exe
Token: SeBackupPrivilege	1984	wmic.exe
Token: SeRestorePrivilege	1984	wmic.exe
Token: SeShutdownPrivilege	1984	wmic.exe
Token: SeDebugPrivilege	1984	wmic.exe
Token: SeSystemEnvironmentPrivilege	1984	wmic.exe
Token: SeRemoteShutdownPrivilege	1984	wmic.exe
Token: SeUndockPrivilege	1984	wmic.exe
Token: SeManageVolumePrivilege	1984	wmic.exe
Token: 33	1984	wmic.exe
Token: 34	1984	wmic.exe
Token: 35	1984	wmic.exe
Token: 36	1984	wmic.exe
Token: SeDebugPrivilege	3092	powershell.exe
Token: SeDebugPrivilege	2516	powershell.exe
Token: SeDebugPrivilege	2996	powershell.exe
Token: SeDebugPrivilege	2224	powershell.exe
Token: SeIncreaseQuotaPrivilege	1524	wmic.exe
Token: SeSecurityPrivilege	1524	wmic.exe
Token: SeTakeOwnershipPrivilege	1524	wmic.exe
Token: SeLoadDriverPrivilege	1524	wmic.exe
Token: SeSystemProfilePrivilege	1524	wmic.exe
Token: SeSystemtimePrivilege	1524	wmic.exe
Token: SeProfSingleProcessPrivilege	1524	wmic.exe
Token: SeIncBasePriorityPrivilege	1524	wmic.exe
Token: SeCreatePagefilePrivilege	1524	wmic.exe
Token: SeBackupPrivilege	1524	wmic.exe
Token: SeRestorePrivilege	1524	wmic.exe
Token: SeShutdownPrivilege	1524	wmic.exe
Token: SeDebugPrivilege	1524	wmic.exe
Token: SeSystemEnvironmentPrivilege	1524	wmic.exe
Token: SeRemoteShutdownPrivilege	1524	wmic.exe
Token: SeUndockPrivilege	1524	wmic.exe
Token: SeManageVolumePrivilege	1524	wmic.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 4556 wrote to memory of 1984	4556	628d7cd6016b226c4e5e5252b29dc89e42d30ffebfb489e36857079aad591ce6.exe	85
PID 4556 wrote to memory of 1984	4556	628d7cd6016b226c4e5e5252b29dc89e42d30ffebfb489e36857079aad591ce6.exe	85
PID 4556 wrote to memory of 1244	4556	628d7cd6016b226c4e5e5252b29dc89e42d30ffebfb489e36857079aad591ce6.exe	91
PID 4556 wrote to memory of 1244	4556	628d7cd6016b226c4e5e5252b29dc89e42d30ffebfb489e36857079aad591ce6.exe	91
PID 4556 wrote to memory of 3092	4556	628d7cd6016b226c4e5e5252b29dc89e42d30ffebfb489e36857079aad591ce6.exe	93
PID 4556 wrote to memory of 3092	4556	628d7cd6016b226c4e5e5252b29dc89e42d30ffebfb489e36857079aad591ce6.exe	93
PID 4556 wrote to memory of 2516	4556	628d7cd6016b226c4e5e5252b29dc89e42d30ffebfb489e36857079aad591ce6.exe	97
PID 4556 wrote to memory of 2516	4556	628d7cd6016b226c4e5e5252b29dc89e42d30ffebfb489e36857079aad591ce6.exe	97
PID 4556 wrote to memory of 2996	4556	628d7cd6016b226c4e5e5252b29dc89e42d30ffebfb489e36857079aad591ce6.exe	100
PID 4556 wrote to memory of 2996	4556	628d7cd6016b226c4e5e5252b29dc89e42d30ffebfb489e36857079aad591ce6.exe	100
PID 4556 wrote to memory of 2224	4556	628d7cd6016b226c4e5e5252b29dc89e42d30ffebfb489e36857079aad591ce6.exe	102
PID 4556 wrote to memory of 2224	4556	628d7cd6016b226c4e5e5252b29dc89e42d30ffebfb489e36857079aad591ce6.exe	102
PID 4556 wrote to memory of 1524	4556	628d7cd6016b226c4e5e5252b29dc89e42d30ffebfb489e36857079aad591ce6.exe	104
PID 4556 wrote to memory of 1524	4556	628d7cd6016b226c4e5e5252b29dc89e42d30ffebfb489e36857079aad591ce6.exe	104
PID 4556 wrote to memory of 1676	4556	628d7cd6016b226c4e5e5252b29dc89e42d30ffebfb489e36857079aad591ce6.exe	106
PID 4556 wrote to memory of 1676	4556	628d7cd6016b226c4e5e5252b29dc89e42d30ffebfb489e36857079aad591ce6.exe	106
PID 4556 wrote to memory of 3844	4556	628d7cd6016b226c4e5e5252b29dc89e42d30ffebfb489e36857079aad591ce6.exe	108
PID 4556 wrote to memory of 3844	4556	628d7cd6016b226c4e5e5252b29dc89e42d30ffebfb489e36857079aad591ce6.exe	108
PID 4556 wrote to memory of 1236	4556	628d7cd6016b226c4e5e5252b29dc89e42d30ffebfb489e36857079aad591ce6.exe	110
PID 4556 wrote to memory of 1236	4556	628d7cd6016b226c4e5e5252b29dc89e42d30ffebfb489e36857079aad591ce6.exe	110
PID 4556 wrote to memory of 4220	4556	628d7cd6016b226c4e5e5252b29dc89e42d30ffebfb489e36857079aad591ce6.exe	112
PID 4556 wrote to memory of 4220	4556	628d7cd6016b226c4e5e5252b29dc89e42d30ffebfb489e36857079aad591ce6.exe	112
PID 4556 wrote to memory of 2304	4556	628d7cd6016b226c4e5e5252b29dc89e42d30ffebfb489e36857079aad591ce6.exe	115
PID 4556 wrote to memory of 2304	4556	628d7cd6016b226c4e5e5252b29dc89e42d30ffebfb489e36857079aad591ce6.exe	115
PID 2304 wrote to memory of 4764	2304	cmd.exe	117
PID 2304 wrote to memory of 4764	2304	cmd.exe	117

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
1244	attrib.exe

C:\Users\Admin\AppData\Local\Temp\628d7cd6016b226c4e5e5252b29dc89e42d30ffebfb489e36857079aad591ce6.exe
"C:\Users\Admin\AppData\Local\Temp\628d7cd6016b226c4e5e5252b29dc89e42d30ffebfb489e36857079aad591ce6.exe"
1⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4556
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1984
- C:\Windows\SYSTEM32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\628d7cd6016b226c4e5e5252b29dc89e42d30ffebfb489e36857079aad591ce6.exe"
  2⤵
  - Views/modifies file attributes
  PID:1244
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\628d7cd6016b226c4e5e5252b29dc89e42d30ffebfb489e36857079aad591ce6.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3092
- 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:2516
- 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:2996
- 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:2224
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1524
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:1676
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:3844
- 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:1236
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:4220
- C:\Windows\SYSTEM32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\628d7cd6016b226c4e5e5252b29dc89e42d30ffebfb489e36857079aad591ce6.exe" && pause
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2304
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - Runs ping.exe
    PID:4764

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

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Remote System Discovery

T1018

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

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
1a58f982c18490e622e00d4eb75ace5a

SHA1
60c30527b74659ecf09089a5a7c02a1df9a71b65

SHA256
4b7f800c0dea209162cc86627983993127eb20e3f8616646c41cb3ce15d9b39d

SHA512
ddab516a967783c5951717853aa5b3ef6dd5b442db50092888b2e7f3179fc68120fcde69a08d6ab280740eaadb6eadfc758c3118b52706f869e48ac1aebda480

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

Filesize
1KB

MD5
2a75c2057536d71d287d7cefff04eec3

SHA1
c61131dee25db97244118daaf982c0bd1389b8b4

SHA256
93cf99b87df289b80cc8be11623fbb0b09812f2dcee9986e76cedb188ca942a0

SHA512
1d8877aeade86757fb7d37b54abf27e8d6579a7a51bcbba549bcfd0c66a2b4383ab7f34eb4621c031262df4e5266332e1427f64af268922e24c24ed9ca94f150

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

Filesize
1KB

MD5
ca58d1913d3261f116a299095e04f734

SHA1
941d13d0c8c65adb6513f23991acfa0d62facdea

SHA256
755daf72f2f5e983abb009c3b1eef4c7c660999f5ff581545bbcae7088c17c69

SHA512
87b0d8c9a5348235e9ad6416e09665764db1af408bf763857dc40e39411fa0cf405e3e8b9f0b8540c72aa874059d1dee865aa0cff8dba0fde5779ec9480b5e40

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_aucxzyr5.w53.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/3092-4-0x00007FFFA1920000-0x00007FFFA23E1000-memory.dmp

Filesize
10.8MB

Download
memory/3092-14-0x0000015E75FC0000-0x0000015E75FE2000-memory.dmp

Filesize
136KB

Download
memory/3092-15-0x00007FFFA1920000-0x00007FFFA23E1000-memory.dmp

Filesize
10.8MB

Download
memory/3092-18-0x00007FFFA1920000-0x00007FFFA23E1000-memory.dmp

Filesize
10.8MB

Download
memory/3092-3-0x00007FFFA1920000-0x00007FFFA23E1000-memory.dmp

Filesize
10.8MB

Download
memory/4556-34-0x000001C5D0620000-0x000001C5D0670000-memory.dmp

Filesize
320KB

Download
memory/4556-33-0x000001C5D06C0000-0x000001C5D0736000-memory.dmp

Filesize
472KB

Download
memory/4556-35-0x000001C5B7CD0000-0x000001C5B7CEE000-memory.dmp

Filesize
120KB

Download
memory/4556-0-0x000001C5B5F20000-0x000001C5B5F60000-memory.dmp

Filesize
256KB

Download
memory/4556-1-0x00007FFFA1923000-0x00007FFFA1925000-memory.dmp

Filesize
8KB

Download
memory/4556-71-0x000001C5B7CC0000-0x000001C5B7CCA000-memory.dmp

Filesize
40KB

Download
memory/4556-72-0x000001C5D0690000-0x000001C5D06A2000-memory.dmp

Filesize
72KB

Download
memory/4556-2-0x00007FFFA1920000-0x00007FFFA23E1000-memory.dmp

Filesize
10.8MB

Download
memory/4556-90-0x00007FFFA1920000-0x00007FFFA23E1000-memory.dmp

Filesize
10.8MB

Download