umbral | 9a11a5e65506d504a4c0548c7b4b64660c17df9814fe57c9a7499cae995c1226

Analysis

max time kernel
150s
max time network
205s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
17-11-2024 19:50

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General

Target

VoiceMini.exe
Size

494KB
MD5

1b0ce33547b32c1bc6a0576109673f46
SHA1

bbdd7efb0ce53cac7bc195e1e48ae6b5fbdec3ea
SHA256

9a11a5e65506d504a4c0548c7b4b64660c17df9814fe57c9a7499cae995c1226
SHA512

effa302d783a745f8479279ef39316092425d5294b57fffb9d6abb635c54a6b279bde64938302182f882bc157e05112fb799c27e6a42c9846ac13c162c1f1a58
SSDEEP

6144:3loZM+rIkd8g+EtXHkv/iD4Rern+8D/07VA+Pv+Arb8e1mQAKiXu/S0uy:VoZtL+EP8Rern+8D/07VA+Pv+Sqv

Score

10^/10

umbral discovery execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/3412-1-0x000001E2C79B0000-0x000001E2C7A32000-memory.dmp	family_umbral

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

Command and Scripting Interpreter: PowerShell 1 TTPs 4 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
1156	powershell.exe
1128	powershell.exe
4388	powershell.exe
2236	powershell.exe

Drops file in Drivers directory 1 IoCs

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

Reads user/profile data of web browsers 3 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

Credentials from Web Browsers
T1555.003

Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service

T1102

flow	ioc
27	discord.com
28	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
8	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
2380	cmd.exe
60	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
4892	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
60	PING.EXE

Suspicious behavior: EnumeratesProcesses 11 IoCs

pid	Process
3412	VoiceMini.exe
2236	powershell.exe
2236	powershell.exe
1156	powershell.exe
1156	powershell.exe
1128	powershell.exe
1128	powershell.exe
4740	powershell.exe
4740	powershell.exe
4388	powershell.exe
4388	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	3412	VoiceMini.exe
Token: SeIncreaseQuotaPrivilege	4964	wmic.exe
Token: SeSecurityPrivilege	4964	wmic.exe
Token: SeTakeOwnershipPrivilege	4964	wmic.exe
Token: SeLoadDriverPrivilege	4964	wmic.exe
Token: SeSystemProfilePrivilege	4964	wmic.exe
Token: SeSystemtimePrivilege	4964	wmic.exe
Token: SeProfSingleProcessPrivilege	4964	wmic.exe
Token: SeIncBasePriorityPrivilege	4964	wmic.exe
Token: SeCreatePagefilePrivilege	4964	wmic.exe
Token: SeBackupPrivilege	4964	wmic.exe
Token: SeRestorePrivilege	4964	wmic.exe
Token: SeShutdownPrivilege	4964	wmic.exe
Token: SeDebugPrivilege	4964	wmic.exe
Token: SeSystemEnvironmentPrivilege	4964	wmic.exe
Token: SeRemoteShutdownPrivilege	4964	wmic.exe
Token: SeUndockPrivilege	4964	wmic.exe
Token: SeManageVolumePrivilege	4964	wmic.exe
Token: 33	4964	wmic.exe
Token: 34	4964	wmic.exe
Token: 35	4964	wmic.exe
Token: 36	4964	wmic.exe
Token: SeIncreaseQuotaPrivilege	4964	wmic.exe
Token: SeSecurityPrivilege	4964	wmic.exe
Token: SeTakeOwnershipPrivilege	4964	wmic.exe
Token: SeLoadDriverPrivilege	4964	wmic.exe
Token: SeSystemProfilePrivilege	4964	wmic.exe
Token: SeSystemtimePrivilege	4964	wmic.exe
Token: SeProfSingleProcessPrivilege	4964	wmic.exe
Token: SeIncBasePriorityPrivilege	4964	wmic.exe
Token: SeCreatePagefilePrivilege	4964	wmic.exe
Token: SeBackupPrivilege	4964	wmic.exe
Token: SeRestorePrivilege	4964	wmic.exe
Token: SeShutdownPrivilege	4964	wmic.exe
Token: SeDebugPrivilege	4964	wmic.exe
Token: SeSystemEnvironmentPrivilege	4964	wmic.exe
Token: SeRemoteShutdownPrivilege	4964	wmic.exe
Token: SeUndockPrivilege	4964	wmic.exe
Token: SeManageVolumePrivilege	4964	wmic.exe
Token: 33	4964	wmic.exe
Token: 34	4964	wmic.exe
Token: 35	4964	wmic.exe
Token: 36	4964	wmic.exe
Token: SeDebugPrivilege	2236	powershell.exe
Token: SeDebugPrivilege	1156	powershell.exe
Token: SeDebugPrivilege	1128	powershell.exe
Token: SeDebugPrivilege	4740	powershell.exe
Token: SeIncreaseQuotaPrivilege	812	wmic.exe
Token: SeSecurityPrivilege	812	wmic.exe
Token: SeTakeOwnershipPrivilege	812	wmic.exe
Token: SeLoadDriverPrivilege	812	wmic.exe
Token: SeSystemProfilePrivilege	812	wmic.exe
Token: SeSystemtimePrivilege	812	wmic.exe
Token: SeProfSingleProcessPrivilege	812	wmic.exe
Token: SeIncBasePriorityPrivilege	812	wmic.exe
Token: SeCreatePagefilePrivilege	812	wmic.exe
Token: SeBackupPrivilege	812	wmic.exe
Token: SeRestorePrivilege	812	wmic.exe
Token: SeShutdownPrivilege	812	wmic.exe
Token: SeDebugPrivilege	812	wmic.exe
Token: SeSystemEnvironmentPrivilege	812	wmic.exe
Token: SeRemoteShutdownPrivilege	812	wmic.exe
Token: SeUndockPrivilege	812	wmic.exe
Token: SeManageVolumePrivilege	812	wmic.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 3412 wrote to memory of 4964	3412	VoiceMini.exe	85
PID 3412 wrote to memory of 4964	3412	VoiceMini.exe	85
PID 3412 wrote to memory of 264	3412	VoiceMini.exe	89
PID 3412 wrote to memory of 264	3412	VoiceMini.exe	89
PID 3412 wrote to memory of 2236	3412	VoiceMini.exe	91
PID 3412 wrote to memory of 2236	3412	VoiceMini.exe	91
PID 3412 wrote to memory of 1156	3412	VoiceMini.exe	94
PID 3412 wrote to memory of 1156	3412	VoiceMini.exe	94
PID 3412 wrote to memory of 1128	3412	VoiceMini.exe	96
PID 3412 wrote to memory of 1128	3412	VoiceMini.exe	96
PID 3412 wrote to memory of 4740	3412	VoiceMini.exe	98
PID 3412 wrote to memory of 4740	3412	VoiceMini.exe	98
PID 3412 wrote to memory of 812	3412	VoiceMini.exe	102
PID 3412 wrote to memory of 812	3412	VoiceMini.exe	102
PID 3412 wrote to memory of 2620	3412	VoiceMini.exe	105
PID 3412 wrote to memory of 2620	3412	VoiceMini.exe	105
PID 3412 wrote to memory of 4588	3412	VoiceMini.exe	107
PID 3412 wrote to memory of 4588	3412	VoiceMini.exe	107
PID 3412 wrote to memory of 4388	3412	VoiceMini.exe	109
PID 3412 wrote to memory of 4388	3412	VoiceMini.exe	109
PID 3412 wrote to memory of 4892	3412	VoiceMini.exe	111
PID 3412 wrote to memory of 4892	3412	VoiceMini.exe	111
PID 3412 wrote to memory of 2380	3412	VoiceMini.exe	114
PID 3412 wrote to memory of 2380	3412	VoiceMini.exe	114
PID 2380 wrote to memory of 60	2380	cmd.exe	116
PID 2380 wrote to memory of 60	2380	cmd.exe	116

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
264	attrib.exe

C:\Users\Admin\AppData\Local\Temp\VoiceMini.exe
"C:\Users\Admin\AppData\Local\Temp\VoiceMini.exe"
1⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3412
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:4964
- C:\Windows\SYSTEM32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\VoiceMini.exe"
  2⤵
  - Views/modifies file attributes
  PID:264
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\VoiceMini.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2236
- 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:1156
- 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:1128
- 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:4740
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:812
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:2620
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:4588
- 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:4388
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:4892
- C:\Windows\SYSTEM32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\VoiceMini.exe" && pause
  2⤵
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:2380
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:60

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
59d97011e091004eaffb9816aa0b9abd

SHA1
1602a56b01dd4b7c577ca27d3117e4bcc1aa657b

SHA256
18f381e0db020a763b8c515c346ef58679ab9c403267eacfef5359e272f7e71d

SHA512
d9ca49c1a17580981e2c1a50d73c0eecaa7a62f8514741512172e395af2a3d80aeb0f71c58bc7f52c18246d57ba67af09b6bff4776877d6cc6f0245c30e092d6

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

Filesize
948B

MD5
c9b6705519e1eef08f86c4ba5f4286f3

SHA1
6c6b179e452ecee2673a1d4fe128f1c06f70577f

SHA256
0f9cad44a79126871580e19b01dc3f880c5173b1faaf8b9018d5d1f829714705

SHA512
6d8f85a7a8b0b124530f36a157cd0441b5c1eacdc35e274af9fbf0569d03d1d5e468651a5b2425f0215c282ecfa7b1ffeaeeaf18612822f00bd14306d30640c7

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

Filesize
1KB

MD5
276798eeb29a49dc6e199768bc9c2e71

SHA1
5fdc8ccb897ac2df7476fbb07517aca5b7a6205b

SHA256
cd0a1056e8f1b6cb5cb328532239d802f4e2aa8f8fcdc0fcb487684bd68e0dcc

SHA512
0d34fce64bbefc57d64fa6e03ca886952263d5f24df9c1c4cce6a1e8f5a47a9a21e9820f8d38caa7f7b43a52336ce00b738ea18419aaa7c788b72e04ce19e4f2

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

Filesize
1KB

MD5
45ad40f012b09e141955482368549640

SHA1
3f9cd15875c1e397c3b2b5592805577ae88a96cb

SHA256
ea3b59172f1a33677f9cb3843fb4d6093b806d3a7cf2f3c6d4692f5421f656ce

SHA512
3de08f8affca1c1450088f560776cf3d65146cadac43c06eb922c7b3cea436e519966cf38458303ffeb1a58c53f8952cffda6c34216fda7594e014b516e83b33

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_tcqw3ptt.dri.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/2236-9-0x000001D334230000-0x000001D334252000-memory.dmp

Filesize
136KB

Download
memory/2236-14-0x00007FF909AE0000-0x00007FF90A5A1000-memory.dmp

Filesize
10.8MB

Download
memory/2236-15-0x00007FF909AE0000-0x00007FF90A5A1000-memory.dmp

Filesize
10.8MB

Download
memory/2236-18-0x00007FF909AE0000-0x00007FF90A5A1000-memory.dmp

Filesize
10.8MB

Download
memory/2236-3-0x00007FF909AE0000-0x00007FF90A5A1000-memory.dmp

Filesize
10.8MB

Download
memory/3412-33-0x000001E2E2150000-0x000001E2E21C6000-memory.dmp

Filesize
472KB

Download
memory/3412-34-0x000001E2E1E90000-0x000001E2E1EE0000-memory.dmp

Filesize
320KB

Download
memory/3412-35-0x000001E2E2230000-0x000001E2E224E000-memory.dmp

Filesize
120KB

Download
memory/3412-0-0x00007FF909AE3000-0x00007FF909AE5000-memory.dmp

Filesize
8KB

Download
memory/3412-1-0x000001E2C79B0000-0x000001E2C7A32000-memory.dmp

Filesize
520KB

Download
memory/3412-72-0x000001E2E1EE0000-0x000001E2E1EEA000-memory.dmp

Filesize
40KB

Download
memory/3412-73-0x000001E2E2250000-0x000001E2E2262000-memory.dmp

Filesize
72KB

Download
memory/3412-2-0x00007FF909AE0000-0x00007FF90A5A1000-memory.dmp

Filesize
10.8MB

Download
memory/3412-89-0x00007FF909AE3000-0x00007FF909AE5000-memory.dmp

Filesize
8KB

Download
memory/3412-94-0x00007FF909AE0000-0x00007FF90A5A1000-memory.dmp

Filesize
10.8MB

Download