umbral | e5b6961e667669a720b10532464f250a31532af60f61a4dbab128ae79da80382

Analysis

max time kernel
122s
max time network
124s
platform
windows7_x64
resource
win7-20240705-en
resource tags

arch:x64arch:x86image:win7-20240705-enlocale:en-usos:windows7-x64system
submitted
02-08-2024 16:17

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General

Target

Wave.exe
Size

230KB
MD5

8abaecb6ec29fc2d34b4639fce34a7de
SHA1

74dc5690b5d337fe2ab0cb9e9ec7ce304458c2c5
SHA256

e5b6961e667669a720b10532464f250a31532af60f61a4dbab128ae79da80382
SHA512

6276b1c51f8ffb7cfeb7d15c22842ad59788b857761e5df3914b03b4642dfe0fc23108e03f1306bdeb3a1cc73540a0008f081b250ae3cfa3c5ffc6e05fbd990d
SSDEEP

6144:1loZM+rIkd8g+EtXHkv/iD495hya43TwVJc6rrSDwb8e1mNCpi:XoZtL+EP895hya43TwVJc6rrSUi

Score

10^/10

umbral credential_access discovery execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/2140-1-0x0000000000A50000-0x0000000000A90000-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
1004	powershell.exe
684	powershell.exe
2584	powershell.exe
2004	powershell.exe

Drops file in Drivers directory 1 IoCs

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

Deletes itself 1 IoCs

pid	Process
2316	cmd.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
9	discord.com
10	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
6	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
1740	PING.EXE
2316	cmd.exe

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
2128	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
1740	PING.EXE

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2140	Wave.exe
1004	powershell.exe
2584	powershell.exe
2004	powershell.exe
2180	powershell.exe
684	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2140	Wave.exe
Token: SeIncreaseQuotaPrivilege	2664	wmic.exe
Token: SeSecurityPrivilege	2664	wmic.exe
Token: SeTakeOwnershipPrivilege	2664	wmic.exe
Token: SeLoadDriverPrivilege	2664	wmic.exe
Token: SeSystemProfilePrivilege	2664	wmic.exe
Token: SeSystemtimePrivilege	2664	wmic.exe
Token: SeProfSingleProcessPrivilege	2664	wmic.exe
Token: SeIncBasePriorityPrivilege	2664	wmic.exe
Token: SeCreatePagefilePrivilege	2664	wmic.exe
Token: SeBackupPrivilege	2664	wmic.exe
Token: SeRestorePrivilege	2664	wmic.exe
Token: SeShutdownPrivilege	2664	wmic.exe
Token: SeDebugPrivilege	2664	wmic.exe
Token: SeSystemEnvironmentPrivilege	2664	wmic.exe
Token: SeRemoteShutdownPrivilege	2664	wmic.exe
Token: SeUndockPrivilege	2664	wmic.exe
Token: SeManageVolumePrivilege	2664	wmic.exe
Token: 33	2664	wmic.exe
Token: 34	2664	wmic.exe
Token: 35	2664	wmic.exe
Token: SeIncreaseQuotaPrivilege	2664	wmic.exe
Token: SeSecurityPrivilege	2664	wmic.exe
Token: SeTakeOwnershipPrivilege	2664	wmic.exe
Token: SeLoadDriverPrivilege	2664	wmic.exe
Token: SeSystemProfilePrivilege	2664	wmic.exe
Token: SeSystemtimePrivilege	2664	wmic.exe
Token: SeProfSingleProcessPrivilege	2664	wmic.exe
Token: SeIncBasePriorityPrivilege	2664	wmic.exe
Token: SeCreatePagefilePrivilege	2664	wmic.exe
Token: SeBackupPrivilege	2664	wmic.exe
Token: SeRestorePrivilege	2664	wmic.exe
Token: SeShutdownPrivilege	2664	wmic.exe
Token: SeDebugPrivilege	2664	wmic.exe
Token: SeSystemEnvironmentPrivilege	2664	wmic.exe
Token: SeRemoteShutdownPrivilege	2664	wmic.exe
Token: SeUndockPrivilege	2664	wmic.exe
Token: SeManageVolumePrivilege	2664	wmic.exe
Token: 33	2664	wmic.exe
Token: 34	2664	wmic.exe
Token: 35	2664	wmic.exe
Token: SeDebugPrivilege	1004	powershell.exe
Token: SeDebugPrivilege	2584	powershell.exe
Token: SeDebugPrivilege	2004	powershell.exe
Token: SeDebugPrivilege	2180	powershell.exe
Token: SeIncreaseQuotaPrivilege	2788	wmic.exe
Token: SeSecurityPrivilege	2788	wmic.exe
Token: SeTakeOwnershipPrivilege	2788	wmic.exe
Token: SeLoadDriverPrivilege	2788	wmic.exe
Token: SeSystemProfilePrivilege	2788	wmic.exe
Token: SeSystemtimePrivilege	2788	wmic.exe
Token: SeProfSingleProcessPrivilege	2788	wmic.exe
Token: SeIncBasePriorityPrivilege	2788	wmic.exe
Token: SeCreatePagefilePrivilege	2788	wmic.exe
Token: SeBackupPrivilege	2788	wmic.exe
Token: SeRestorePrivilege	2788	wmic.exe
Token: SeShutdownPrivilege	2788	wmic.exe
Token: SeDebugPrivilege	2788	wmic.exe
Token: SeSystemEnvironmentPrivilege	2788	wmic.exe
Token: SeRemoteShutdownPrivilege	2788	wmic.exe
Token: SeUndockPrivilege	2788	wmic.exe
Token: SeManageVolumePrivilege	2788	wmic.exe
Token: 33	2788	wmic.exe
Token: 34	2788	wmic.exe

Suspicious use of WriteProcessMemory 39 IoCs

description	pid	Process	procid_target
PID 2140 wrote to memory of 2664	2140	Wave.exe	30
PID 2140 wrote to memory of 2664	2140	Wave.exe	30
PID 2140 wrote to memory of 2664	2140	Wave.exe	30
PID 2140 wrote to memory of 2008	2140	Wave.exe	33
PID 2140 wrote to memory of 2008	2140	Wave.exe	33
PID 2140 wrote to memory of 2008	2140	Wave.exe	33
PID 2140 wrote to memory of 1004	2140	Wave.exe	35
PID 2140 wrote to memory of 1004	2140	Wave.exe	35
PID 2140 wrote to memory of 1004	2140	Wave.exe	35
PID 2140 wrote to memory of 2584	2140	Wave.exe	37
PID 2140 wrote to memory of 2584	2140	Wave.exe	37
PID 2140 wrote to memory of 2584	2140	Wave.exe	37
PID 2140 wrote to memory of 2004	2140	Wave.exe	39
PID 2140 wrote to memory of 2004	2140	Wave.exe	39
PID 2140 wrote to memory of 2004	2140	Wave.exe	39
PID 2140 wrote to memory of 2180	2140	Wave.exe	41
PID 2140 wrote to memory of 2180	2140	Wave.exe	41
PID 2140 wrote to memory of 2180	2140	Wave.exe	41
PID 2140 wrote to memory of 2788	2140	Wave.exe	43
PID 2140 wrote to memory of 2788	2140	Wave.exe	43
PID 2140 wrote to memory of 2788	2140	Wave.exe	43
PID 2140 wrote to memory of 444	2140	Wave.exe	45
PID 2140 wrote to memory of 444	2140	Wave.exe	45
PID 2140 wrote to memory of 444	2140	Wave.exe	45
PID 2140 wrote to memory of 2020	2140	Wave.exe	47
PID 2140 wrote to memory of 2020	2140	Wave.exe	47
PID 2140 wrote to memory of 2020	2140	Wave.exe	47
PID 2140 wrote to memory of 684	2140	Wave.exe	49
PID 2140 wrote to memory of 684	2140	Wave.exe	49
PID 2140 wrote to memory of 684	2140	Wave.exe	49
PID 2140 wrote to memory of 2128	2140	Wave.exe	51
PID 2140 wrote to memory of 2128	2140	Wave.exe	51
PID 2140 wrote to memory of 2128	2140	Wave.exe	51
PID 2140 wrote to memory of 2316	2140	Wave.exe	53
PID 2140 wrote to memory of 2316	2140	Wave.exe	53
PID 2140 wrote to memory of 2316	2140	Wave.exe	53
PID 2316 wrote to memory of 1740	2316	cmd.exe	55
PID 2316 wrote to memory of 1740	2316	cmd.exe	55
PID 2316 wrote to memory of 1740	2316	cmd.exe	55

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
2008	attrib.exe

C:\Users\Admin\AppData\Local\Temp\Wave.exe
"C:\Users\Admin\AppData\Local\Temp\Wave.exe"
1⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2140
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2664
- C:\Windows\system32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\Wave.exe"
  2⤵
  - Views/modifies file attributes
  PID:2008
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\Wave.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1004
- 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:2584
- 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:2004
- 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:2180
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2788
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:444
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:2020
- 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:684
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:2128
- C:\Windows\system32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\Wave.exe" && pause
  2⤵
  - Deletes itself
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:2316
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:1740

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

Web Service

T1102

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms

Filesize
7KB

MD5
774e3d53605bd5c23a8b72b09a488643

SHA1
1a13c83406506369b51c30cd55386ac22d3faf3b

SHA256
7ee99c9585387ca5bb1b361db95d389944a3a8e3d65172da4c8a047c6cb7bc75

SHA512
ca40a7cf7951e476c7ae405a41fa2a16a38eac32f93e540b9a981659489cc414854b49abf464792ec885f3b80d9c2a755fc01a16dd6720379ef2cc18df1e6c19

Download Submit
memory/684-44-0x0000000000540000-0x0000000000548000-memory.dmp

Filesize
32KB

Download
memory/1004-7-0x000000001B7A0000-0x000000001BA82000-memory.dmp

Filesize
2.9MB

Download
memory/1004-8-0x0000000001EE0000-0x0000000001EE8000-memory.dmp

Filesize
32KB

Download
memory/2140-0-0x000007FEF5783000-0x000007FEF5784000-memory.dmp

Filesize
4KB

Download
memory/2140-1-0x0000000000A50000-0x0000000000A90000-memory.dmp

Filesize
256KB

Download
memory/2140-2-0x000007FEF5780000-0x000007FEF616C000-memory.dmp

Filesize
9.9MB

Download
memory/2140-48-0x000007FEF5780000-0x000007FEF616C000-memory.dmp

Filesize
9.9MB

Download
memory/2584-14-0x000000001B760000-0x000000001BA42000-memory.dmp

Filesize
2.9MB

Download
memory/2584-15-0x0000000002310000-0x0000000002318000-memory.dmp

Filesize
32KB

Download