umbral | edbfb6dab0d96e3c95a6bdfbe15c338a85a55c66d01115094674ac9f0eb91b18

Analysis

max time kernel
142s
max time network
131s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
11-08-2024 20:46

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General

Target

Wave.exe
Size

284KB
MD5

94859e013cc39676f0b539f75481a34a
SHA1

8b92d4aefc0bbfb8a145a7d709d03c2591280b33
SHA256

edbfb6dab0d96e3c95a6bdfbe15c338a85a55c66d01115094674ac9f0eb91b18
SHA512

a2fc0e7de1135d4573623804d7eadda97c7f59efb760008292547b75c51042dccf8e38ff102a93273de8141e43b9e053bc8416780b7d199a6281f83ce3e61a48
SSDEEP

6144:iloZM+rIkd8g+EtXHkv/iD45THRtxdT8e1mBzWibGEIZwT1GWVW:soZtL+EP85bbxtWqxoGf

Score

10^/10

umbral credential_access discovery execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral2/memory/4216-0-0x00000222C6A00000-0x00000222C6A4C000-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
1204	powershell.exe
2572	powershell.exe
4084	powershell.exe
4132	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 3 IoCs

Web Service

T1102

flow	ioc
37	discord.com
38	discord.com
39	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
18	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
3788	cmd.exe
4072	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
1716	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
4072	PING.EXE

Suspicious behavior: EnumeratesProcesses 11 IoCs

pid	Process
4216	Wave.exe
1204	powershell.exe
1204	powershell.exe
2572	powershell.exe
2572	powershell.exe
4084	powershell.exe
4084	powershell.exe
4964	powershell.exe
4964	powershell.exe
4132	powershell.exe
4132	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	4216	Wave.exe
Token: SeIncreaseQuotaPrivilege	1608	wmic.exe
Token: SeSecurityPrivilege	1608	wmic.exe
Token: SeTakeOwnershipPrivilege	1608	wmic.exe
Token: SeLoadDriverPrivilege	1608	wmic.exe
Token: SeSystemProfilePrivilege	1608	wmic.exe
Token: SeSystemtimePrivilege	1608	wmic.exe
Token: SeProfSingleProcessPrivilege	1608	wmic.exe
Token: SeIncBasePriorityPrivilege	1608	wmic.exe
Token: SeCreatePagefilePrivilege	1608	wmic.exe
Token: SeBackupPrivilege	1608	wmic.exe
Token: SeRestorePrivilege	1608	wmic.exe
Token: SeShutdownPrivilege	1608	wmic.exe
Token: SeDebugPrivilege	1608	wmic.exe
Token: SeSystemEnvironmentPrivilege	1608	wmic.exe
Token: SeRemoteShutdownPrivilege	1608	wmic.exe
Token: SeUndockPrivilege	1608	wmic.exe
Token: SeManageVolumePrivilege	1608	wmic.exe
Token: 33	1608	wmic.exe
Token: 34	1608	wmic.exe
Token: 35	1608	wmic.exe
Token: 36	1608	wmic.exe
Token: SeIncreaseQuotaPrivilege	1608	wmic.exe
Token: SeSecurityPrivilege	1608	wmic.exe
Token: SeTakeOwnershipPrivilege	1608	wmic.exe
Token: SeLoadDriverPrivilege	1608	wmic.exe
Token: SeSystemProfilePrivilege	1608	wmic.exe
Token: SeSystemtimePrivilege	1608	wmic.exe
Token: SeProfSingleProcessPrivilege	1608	wmic.exe
Token: SeIncBasePriorityPrivilege	1608	wmic.exe
Token: SeCreatePagefilePrivilege	1608	wmic.exe
Token: SeBackupPrivilege	1608	wmic.exe
Token: SeRestorePrivilege	1608	wmic.exe
Token: SeShutdownPrivilege	1608	wmic.exe
Token: SeDebugPrivilege	1608	wmic.exe
Token: SeSystemEnvironmentPrivilege	1608	wmic.exe
Token: SeRemoteShutdownPrivilege	1608	wmic.exe
Token: SeUndockPrivilege	1608	wmic.exe
Token: SeManageVolumePrivilege	1608	wmic.exe
Token: 33	1608	wmic.exe
Token: 34	1608	wmic.exe
Token: 35	1608	wmic.exe
Token: 36	1608	wmic.exe
Token: SeDebugPrivilege	1204	powershell.exe
Token: SeDebugPrivilege	2572	powershell.exe
Token: SeDebugPrivilege	4084	powershell.exe
Token: SeDebugPrivilege	4964	powershell.exe
Token: SeIncreaseQuotaPrivilege	3408	wmic.exe
Token: SeSecurityPrivilege	3408	wmic.exe
Token: SeTakeOwnershipPrivilege	3408	wmic.exe
Token: SeLoadDriverPrivilege	3408	wmic.exe
Token: SeSystemProfilePrivilege	3408	wmic.exe
Token: SeSystemtimePrivilege	3408	wmic.exe
Token: SeProfSingleProcessPrivilege	3408	wmic.exe
Token: SeIncBasePriorityPrivilege	3408	wmic.exe
Token: SeCreatePagefilePrivilege	3408	wmic.exe
Token: SeBackupPrivilege	3408	wmic.exe
Token: SeRestorePrivilege	3408	wmic.exe
Token: SeShutdownPrivilege	3408	wmic.exe
Token: SeDebugPrivilege	3408	wmic.exe
Token: SeSystemEnvironmentPrivilege	3408	wmic.exe
Token: SeRemoteShutdownPrivilege	3408	wmic.exe
Token: SeUndockPrivilege	3408	wmic.exe
Token: SeManageVolumePrivilege	3408	wmic.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 4216 wrote to memory of 1608	4216	Wave.exe	88
PID 4216 wrote to memory of 1608	4216	Wave.exe	88
PID 4216 wrote to memory of 3484	4216	Wave.exe	91
PID 4216 wrote to memory of 3484	4216	Wave.exe	91
PID 4216 wrote to memory of 1204	4216	Wave.exe	93
PID 4216 wrote to memory of 1204	4216	Wave.exe	93
PID 4216 wrote to memory of 2572	4216	Wave.exe	95
PID 4216 wrote to memory of 2572	4216	Wave.exe	95
PID 4216 wrote to memory of 4084	4216	Wave.exe	97
PID 4216 wrote to memory of 4084	4216	Wave.exe	97
PID 4216 wrote to memory of 4964	4216	Wave.exe	99
PID 4216 wrote to memory of 4964	4216	Wave.exe	99
PID 4216 wrote to memory of 3408	4216	Wave.exe	103
PID 4216 wrote to memory of 3408	4216	Wave.exe	103
PID 4216 wrote to memory of 3980	4216	Wave.exe	105
PID 4216 wrote to memory of 3980	4216	Wave.exe	105
PID 4216 wrote to memory of 4412	4216	Wave.exe	107
PID 4216 wrote to memory of 4412	4216	Wave.exe	107
PID 4216 wrote to memory of 4132	4216	Wave.exe	109
PID 4216 wrote to memory of 4132	4216	Wave.exe	109
PID 4216 wrote to memory of 1716	4216	Wave.exe	111
PID 4216 wrote to memory of 1716	4216	Wave.exe	111
PID 4216 wrote to memory of 3788	4216	Wave.exe	114
PID 4216 wrote to memory of 3788	4216	Wave.exe	114
PID 3788 wrote to memory of 4072	3788	cmd.exe	116
PID 3788 wrote to memory of 4072	3788	cmd.exe	116

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
3484	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:4216
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1608
- C:\Windows\SYSTEM32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\Wave.exe"
  2⤵
  - Views/modifies file attributes
  PID:3484
- 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:1204
- 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:2572
- 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:4084
- 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:4964
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:3408
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:3980
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:4412
- 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:4132
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:1716
- 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:3788
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:4072

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\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
62623d22bd9e037191765d5083ce16a3

SHA1
4a07da6872672f715a4780513d95ed8ddeefd259

SHA256
95d79fd575bbd21540e378fcbc1cd00d16f51af62ce15bae7080bb72c24e2010

SHA512
9a448b7a0d867466c2ea04ab84d2a9485d5fd20ab53b2b854f491831ee3f1d781b94d2635f7b0b35cb9f2d373cd52c67570879a56a42ed66bc9db06962ed4992

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

Filesize
948B

MD5
f4bf3ca8753d6bb9725419fec1ec74b9

SHA1
71fce9d17d1d92873236a9a827c52eb9e4827f3d

SHA256
ca8697e4ada4c3d4aac2899b8aad4052ccd605fccee05ee0a831368bde2f7417

SHA512
a55a107ae8bcf833ea674413c765cd55096146c9634dff41884fcc851c12fe47753308099525c99ae44883facfb668c8b292dd915263f34ebd1190391cb28a54

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

Filesize
1KB

MD5
d3235ed022a42ec4338123ab87144afa

SHA1
5058608bc0deb720a585a2304a8f7cf63a50a315

SHA256
10663f5a1cb0afe5578f61ebaae2aafb363544e47b48521f9c23be9e6e431b27

SHA512
236761b7c68feca8bd62cba90cff0b25fac5613837aaa5d29ae823ace8b06a2057553cf7e72b11ccc59b6c289e471ca1bbac1a880aef5e2868875371a17c1abf

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

Filesize
1KB

MD5
08e2b6dc039d66a6bfa02fbaa9b86e1f

SHA1
1a45a88b900fc97183e50e3dd95deb5c086e2ca7

SHA256
13f0b2febb094f7d558d4325d06807162326f65290c90fa52fa1d3e4e4b35b14

SHA512
2e818787d6067890ec8586f9e4c2d459632e09c167749ff1b58fcaa273850b0ca61f0a468eda65a71358daa36a69ec7961b07cffe6ebcd7b8f79b2b796402891

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_kmzeatfu.c2a.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1204-8-0x000002D34E100000-0x000002D34E122000-memory.dmp

Filesize
136KB

Download
memory/1204-13-0x00007FF844510000-0x00007FF844FD1000-memory.dmp

Filesize
10.8MB

Download
memory/1204-14-0x00007FF844510000-0x00007FF844FD1000-memory.dmp

Filesize
10.8MB

Download
memory/1204-15-0x00007FF844510000-0x00007FF844FD1000-memory.dmp

Filesize
10.8MB

Download
memory/1204-18-0x00007FF844510000-0x00007FF844FD1000-memory.dmp

Filesize
10.8MB

Download
memory/4216-34-0x00000222C87F0000-0x00000222C8840000-memory.dmp

Filesize
320KB

Download
memory/4216-33-0x00000222E1260000-0x00000222E12D6000-memory.dmp

Filesize
472KB

Download
memory/4216-35-0x00000222C8840000-0x00000222C885E000-memory.dmp

Filesize
120KB

Download
memory/4216-1-0x00007FF844513000-0x00007FF844515000-memory.dmp

Filesize
8KB

Download
memory/4216-0-0x00000222C6A00000-0x00000222C6A4C000-memory.dmp

Filesize
304KB

Download
memory/4216-71-0x00000222C6F00000-0x00000222C6F0A000-memory.dmp

Filesize
40KB

Download
memory/4216-72-0x00000222E0F50000-0x00000222E0F62000-memory.dmp

Filesize
72KB

Download
memory/4216-2-0x00007FF844510000-0x00007FF844FD1000-memory.dmp

Filesize
10.8MB

Download
memory/4216-90-0x00007FF844510000-0x00007FF844FD1000-memory.dmp

Filesize
10.8MB

Download