umbral | e5b6961e667669a720b10532464f250a31532af60f61a4dbab128ae79da80382

Analysis

max time kernel
148s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-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
behavioral2/memory/2128-1-0x000001A56D6A0000-0x000001A56D6E0000-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
4600	powershell.exe
5048	powershell.exe
3640	powershell.exe
3832	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	Wave.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
14	discord.com
13	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
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
3372	PING.EXE
384	cmd.exe

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
2548	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
3372	PING.EXE

Suspicious behavior: EnumeratesProcesses 11 IoCs

pid	Process
2128	Wave.exe
4600	powershell.exe
4600	powershell.exe
5048	powershell.exe
5048	powershell.exe
3640	powershell.exe
3640	powershell.exe
3812	powershell.exe
3812	powershell.exe
3832	powershell.exe
3832	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2128	Wave.exe
Token: SeIncreaseQuotaPrivilege	2456	wmic.exe
Token: SeSecurityPrivilege	2456	wmic.exe
Token: SeTakeOwnershipPrivilege	2456	wmic.exe
Token: SeLoadDriverPrivilege	2456	wmic.exe
Token: SeSystemProfilePrivilege	2456	wmic.exe
Token: SeSystemtimePrivilege	2456	wmic.exe
Token: SeProfSingleProcessPrivilege	2456	wmic.exe
Token: SeIncBasePriorityPrivilege	2456	wmic.exe
Token: SeCreatePagefilePrivilege	2456	wmic.exe
Token: SeBackupPrivilege	2456	wmic.exe
Token: SeRestorePrivilege	2456	wmic.exe
Token: SeShutdownPrivilege	2456	wmic.exe
Token: SeDebugPrivilege	2456	wmic.exe
Token: SeSystemEnvironmentPrivilege	2456	wmic.exe
Token: SeRemoteShutdownPrivilege	2456	wmic.exe
Token: SeUndockPrivilege	2456	wmic.exe
Token: SeManageVolumePrivilege	2456	wmic.exe
Token: 33	2456	wmic.exe
Token: 34	2456	wmic.exe
Token: 35	2456	wmic.exe
Token: 36	2456	wmic.exe
Token: SeIncreaseQuotaPrivilege	2456	wmic.exe
Token: SeSecurityPrivilege	2456	wmic.exe
Token: SeTakeOwnershipPrivilege	2456	wmic.exe
Token: SeLoadDriverPrivilege	2456	wmic.exe
Token: SeSystemProfilePrivilege	2456	wmic.exe
Token: SeSystemtimePrivilege	2456	wmic.exe
Token: SeProfSingleProcessPrivilege	2456	wmic.exe
Token: SeIncBasePriorityPrivilege	2456	wmic.exe
Token: SeCreatePagefilePrivilege	2456	wmic.exe
Token: SeBackupPrivilege	2456	wmic.exe
Token: SeRestorePrivilege	2456	wmic.exe
Token: SeShutdownPrivilege	2456	wmic.exe
Token: SeDebugPrivilege	2456	wmic.exe
Token: SeSystemEnvironmentPrivilege	2456	wmic.exe
Token: SeRemoteShutdownPrivilege	2456	wmic.exe
Token: SeUndockPrivilege	2456	wmic.exe
Token: SeManageVolumePrivilege	2456	wmic.exe
Token: 33	2456	wmic.exe
Token: 34	2456	wmic.exe
Token: 35	2456	wmic.exe
Token: 36	2456	wmic.exe
Token: SeDebugPrivilege	4600	powershell.exe
Token: SeDebugPrivilege	5048	powershell.exe
Token: SeDebugPrivilege	3640	powershell.exe
Token: SeDebugPrivilege	3812	powershell.exe
Token: SeIncreaseQuotaPrivilege	2732	wmic.exe
Token: SeSecurityPrivilege	2732	wmic.exe
Token: SeTakeOwnershipPrivilege	2732	wmic.exe
Token: SeLoadDriverPrivilege	2732	wmic.exe
Token: SeSystemProfilePrivilege	2732	wmic.exe
Token: SeSystemtimePrivilege	2732	wmic.exe
Token: SeProfSingleProcessPrivilege	2732	wmic.exe
Token: SeIncBasePriorityPrivilege	2732	wmic.exe
Token: SeCreatePagefilePrivilege	2732	wmic.exe
Token: SeBackupPrivilege	2732	wmic.exe
Token: SeRestorePrivilege	2732	wmic.exe
Token: SeShutdownPrivilege	2732	wmic.exe
Token: SeDebugPrivilege	2732	wmic.exe
Token: SeSystemEnvironmentPrivilege	2732	wmic.exe
Token: SeRemoteShutdownPrivilege	2732	wmic.exe
Token: SeUndockPrivilege	2732	wmic.exe
Token: SeManageVolumePrivilege	2732	wmic.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 2128 wrote to memory of 2456	2128	Wave.exe	83
PID 2128 wrote to memory of 2456	2128	Wave.exe	83
PID 2128 wrote to memory of 4408	2128	Wave.exe	87
PID 2128 wrote to memory of 4408	2128	Wave.exe	87
PID 2128 wrote to memory of 4600	2128	Wave.exe	89
PID 2128 wrote to memory of 4600	2128	Wave.exe	89
PID 2128 wrote to memory of 5048	2128	Wave.exe	91
PID 2128 wrote to memory of 5048	2128	Wave.exe	91
PID 2128 wrote to memory of 3640	2128	Wave.exe	93
PID 2128 wrote to memory of 3640	2128	Wave.exe	93
PID 2128 wrote to memory of 3812	2128	Wave.exe	95
PID 2128 wrote to memory of 3812	2128	Wave.exe	95
PID 2128 wrote to memory of 2732	2128	Wave.exe	97
PID 2128 wrote to memory of 2732	2128	Wave.exe	97
PID 2128 wrote to memory of 2760	2128	Wave.exe	99
PID 2128 wrote to memory of 2760	2128	Wave.exe	99
PID 2128 wrote to memory of 3084	2128	Wave.exe	101
PID 2128 wrote to memory of 3084	2128	Wave.exe	101
PID 2128 wrote to memory of 3832	2128	Wave.exe	103
PID 2128 wrote to memory of 3832	2128	Wave.exe	103
PID 2128 wrote to memory of 2548	2128	Wave.exe	105
PID 2128 wrote to memory of 2548	2128	Wave.exe	105
PID 2128 wrote to memory of 384	2128	Wave.exe	107
PID 2128 wrote to memory of 384	2128	Wave.exe	107
PID 384 wrote to memory of 3372	384	cmd.exe	109
PID 384 wrote to memory of 3372	384	cmd.exe	109

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
4408	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:2128
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2456
- C:\Windows\SYSTEM32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\Wave.exe"
  2⤵
  - Views/modifies file attributes
  PID:4408
- 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:4600
- 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:5048
- 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:3640
- 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:3812
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2732
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:2760
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:3084
- 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:3832
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:2548
- C:\Windows\SYSTEM32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\Wave.exe" && pause
  2⤵
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:384
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:3372

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\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
c65738617888921a153bd9b1ef516ee7

SHA1
5245e71ea3c181d76320c857b639272ac9e079b1

SHA256
4640ba4001fd16a593315299cbdd4988dc2c7075820687f1018aac40aca95c26

SHA512
2e2a0ebd93f9d8dd07a7599054bce232683e9add9a35e77b584618040bcfd84a42545352519ec4736cc379002210b6f3ed2d905591c6925c0981b0392b495bfa

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

Filesize
1KB

MD5
71418d0b9965891dd306df50dd80a200

SHA1
a0df11b105d282fdce36532bc9edb82a410ac070

SHA256
2c63e7f45102284aaf6f22dfbccf6055a9de6b9163b1589ac766be7b2f8fbb52

SHA512
e399b8c48ba33ba7417f7be56eab4489a32f5f39d7fc580a7e01b50ab6565476dac55b769926f36148664ea377b4622b9d537e08d8964fa6b870b2facae0d2bd

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

Filesize
1KB

MD5
b31cdecb9b90fb248d41ff46b8ceb559

SHA1
f9b937b9567e672e4f33eb97983bed41bfa9bc54

SHA256
4fb51181639320bd4546f7a601cc49a790fc5bdecc772dc959d5ec4e8eff22bb

SHA512
f9f8637d9c22733e8f1cb1bd1548d0ec0956af067b6c47a1cb79fb6999ca141d4d29f4d1fe2b7473f638a85b932ff2f9ca2574e15abfdbb2582640e3a938dcf1

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_qviowmf0.vza.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/2128-68-0x000001A56FD70000-0x000001A56FD7A000-memory.dmp

Filesize
40KB

Download
memory/2128-30-0x000001A56FDC0000-0x000001A56FE36000-memory.dmp

Filesize
472KB

Download
memory/2128-87-0x00007FFC3A240000-0x00007FFC3AD01000-memory.dmp

Filesize
10.8MB

Download
memory/2128-31-0x000001A56FE40000-0x000001A56FE90000-memory.dmp

Filesize
320KB

Download
memory/2128-2-0x00007FFC3A240000-0x00007FFC3AD01000-memory.dmp

Filesize
10.8MB

Download
memory/2128-32-0x000001A56FED0000-0x000001A56FEEE000-memory.dmp

Filesize
120KB

Download
memory/2128-69-0x000001A56FDA0000-0x000001A56FDB2000-memory.dmp

Filesize
72KB

Download
memory/2128-1-0x000001A56D6A0000-0x000001A56D6E0000-memory.dmp

Filesize
256KB

Download
memory/2128-0-0x00007FFC3A243000-0x00007FFC3A245000-memory.dmp

Filesize
8KB

Download
memory/4600-11-0x00007FFC3A240000-0x00007FFC3AD01000-memory.dmp

Filesize
10.8MB

Download
memory/4600-8-0x0000026CD3B20000-0x0000026CD3B42000-memory.dmp

Filesize
136KB

Download
memory/4600-16-0x00007FFC3A240000-0x00007FFC3AD01000-memory.dmp

Filesize
10.8MB

Download
memory/4600-9-0x00007FFC3A240000-0x00007FFC3AD01000-memory.dmp

Filesize
10.8MB

Download