umbral | bb7252177d00b2242b820310ffe3b45f31ee666d85cd6b521f93566c3edc27cc

Analysis

max time kernel
121s
max time network
122s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
04-09-2024 11:01

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General

Target

bb7252177d00b2242b820310ffe3b45f31ee666d85cd6b521f93566c3edc27cc.exe
Size

231KB
MD5

447297048bf59e02973e2a92506bcf82
SHA1

2ed1aca8f40418d12f99675157b89e1d2d26ebb0
SHA256

bb7252177d00b2242b820310ffe3b45f31ee666d85cd6b521f93566c3edc27cc
SHA512

34c14cfb4baeab9bc45445f4167c90d1c362df04ab185a69676088011dfb3f9f78e951ece9986f42fb6ec6d31f22f7dc012d2ccbf8cf02ef0261c8aa698eaf76
SSDEEP

6144:RloZM+rIkd8g+EtXHkv/iD4VDTfGELns8d42X3Wo1b8e1mOi:joZtL+EP8VDTfGELns8d42X3Wk0

Score

10^/10

umbral credential_access discovery execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/3036-1-0x0000000000E90000-0x0000000000ED0000-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
2720	powershell.exe
3004	powershell.exe
2748	powershell.exe
2616	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	bb7252177d00b2242b820310ffe3b45f31ee666d85cd6b521f93566c3edc27cc.exe

Deletes itself 1 IoCs

pid	Process
2920	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
7	discord.com
8	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
4	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
2920	cmd.exe
1628	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
1480	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
1628	PING.EXE

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
3036	bb7252177d00b2242b820310ffe3b45f31ee666d85cd6b521f93566c3edc27cc.exe
2720	powershell.exe
2616	powershell.exe
3004	powershell.exe
2416	powershell.exe
2748	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	3036	bb7252177d00b2242b820310ffe3b45f31ee666d85cd6b521f93566c3edc27cc.exe
Token: SeIncreaseQuotaPrivilege	2688	wmic.exe
Token: SeSecurityPrivilege	2688	wmic.exe
Token: SeTakeOwnershipPrivilege	2688	wmic.exe
Token: SeLoadDriverPrivilege	2688	wmic.exe
Token: SeSystemProfilePrivilege	2688	wmic.exe
Token: SeSystemtimePrivilege	2688	wmic.exe
Token: SeProfSingleProcessPrivilege	2688	wmic.exe
Token: SeIncBasePriorityPrivilege	2688	wmic.exe
Token: SeCreatePagefilePrivilege	2688	wmic.exe
Token: SeBackupPrivilege	2688	wmic.exe
Token: SeRestorePrivilege	2688	wmic.exe
Token: SeShutdownPrivilege	2688	wmic.exe
Token: SeDebugPrivilege	2688	wmic.exe
Token: SeSystemEnvironmentPrivilege	2688	wmic.exe
Token: SeRemoteShutdownPrivilege	2688	wmic.exe
Token: SeUndockPrivilege	2688	wmic.exe
Token: SeManageVolumePrivilege	2688	wmic.exe
Token: 33	2688	wmic.exe
Token: 34	2688	wmic.exe
Token: 35	2688	wmic.exe
Token: SeIncreaseQuotaPrivilege	2688	wmic.exe
Token: SeSecurityPrivilege	2688	wmic.exe
Token: SeTakeOwnershipPrivilege	2688	wmic.exe
Token: SeLoadDriverPrivilege	2688	wmic.exe
Token: SeSystemProfilePrivilege	2688	wmic.exe
Token: SeSystemtimePrivilege	2688	wmic.exe
Token: SeProfSingleProcessPrivilege	2688	wmic.exe
Token: SeIncBasePriorityPrivilege	2688	wmic.exe
Token: SeCreatePagefilePrivilege	2688	wmic.exe
Token: SeBackupPrivilege	2688	wmic.exe
Token: SeRestorePrivilege	2688	wmic.exe
Token: SeShutdownPrivilege	2688	wmic.exe
Token: SeDebugPrivilege	2688	wmic.exe
Token: SeSystemEnvironmentPrivilege	2688	wmic.exe
Token: SeRemoteShutdownPrivilege	2688	wmic.exe
Token: SeUndockPrivilege	2688	wmic.exe
Token: SeManageVolumePrivilege	2688	wmic.exe
Token: 33	2688	wmic.exe
Token: 34	2688	wmic.exe
Token: 35	2688	wmic.exe
Token: SeDebugPrivilege	2720	powershell.exe
Token: SeDebugPrivilege	2616	powershell.exe
Token: SeDebugPrivilege	3004	powershell.exe
Token: SeDebugPrivilege	2416	powershell.exe
Token: SeIncreaseQuotaPrivilege	2112	wmic.exe
Token: SeSecurityPrivilege	2112	wmic.exe
Token: SeTakeOwnershipPrivilege	2112	wmic.exe
Token: SeLoadDriverPrivilege	2112	wmic.exe
Token: SeSystemProfilePrivilege	2112	wmic.exe
Token: SeSystemtimePrivilege	2112	wmic.exe
Token: SeProfSingleProcessPrivilege	2112	wmic.exe
Token: SeIncBasePriorityPrivilege	2112	wmic.exe
Token: SeCreatePagefilePrivilege	2112	wmic.exe
Token: SeBackupPrivilege	2112	wmic.exe
Token: SeRestorePrivilege	2112	wmic.exe
Token: SeShutdownPrivilege	2112	wmic.exe
Token: SeDebugPrivilege	2112	wmic.exe
Token: SeSystemEnvironmentPrivilege	2112	wmic.exe
Token: SeRemoteShutdownPrivilege	2112	wmic.exe
Token: SeUndockPrivilege	2112	wmic.exe
Token: SeManageVolumePrivilege	2112	wmic.exe
Token: 33	2112	wmic.exe
Token: 34	2112	wmic.exe

Suspicious use of WriteProcessMemory 39 IoCs

description	pid	Process	procid_target
PID 3036 wrote to memory of 2688	3036	bb7252177d00b2242b820310ffe3b45f31ee666d85cd6b521f93566c3edc27cc.exe	30
PID 3036 wrote to memory of 2688	3036	bb7252177d00b2242b820310ffe3b45f31ee666d85cd6b521f93566c3edc27cc.exe	30
PID 3036 wrote to memory of 2688	3036	bb7252177d00b2242b820310ffe3b45f31ee666d85cd6b521f93566c3edc27cc.exe	30
PID 3036 wrote to memory of 2256	3036	bb7252177d00b2242b820310ffe3b45f31ee666d85cd6b521f93566c3edc27cc.exe	33
PID 3036 wrote to memory of 2256	3036	bb7252177d00b2242b820310ffe3b45f31ee666d85cd6b521f93566c3edc27cc.exe	33
PID 3036 wrote to memory of 2256	3036	bb7252177d00b2242b820310ffe3b45f31ee666d85cd6b521f93566c3edc27cc.exe	33
PID 3036 wrote to memory of 2720	3036	bb7252177d00b2242b820310ffe3b45f31ee666d85cd6b521f93566c3edc27cc.exe	35
PID 3036 wrote to memory of 2720	3036	bb7252177d00b2242b820310ffe3b45f31ee666d85cd6b521f93566c3edc27cc.exe	35
PID 3036 wrote to memory of 2720	3036	bb7252177d00b2242b820310ffe3b45f31ee666d85cd6b521f93566c3edc27cc.exe	35
PID 3036 wrote to memory of 2616	3036	bb7252177d00b2242b820310ffe3b45f31ee666d85cd6b521f93566c3edc27cc.exe	37
PID 3036 wrote to memory of 2616	3036	bb7252177d00b2242b820310ffe3b45f31ee666d85cd6b521f93566c3edc27cc.exe	37
PID 3036 wrote to memory of 2616	3036	bb7252177d00b2242b820310ffe3b45f31ee666d85cd6b521f93566c3edc27cc.exe	37
PID 3036 wrote to memory of 3004	3036	bb7252177d00b2242b820310ffe3b45f31ee666d85cd6b521f93566c3edc27cc.exe	39
PID 3036 wrote to memory of 3004	3036	bb7252177d00b2242b820310ffe3b45f31ee666d85cd6b521f93566c3edc27cc.exe	39
PID 3036 wrote to memory of 3004	3036	bb7252177d00b2242b820310ffe3b45f31ee666d85cd6b521f93566c3edc27cc.exe	39
PID 3036 wrote to memory of 2416	3036	bb7252177d00b2242b820310ffe3b45f31ee666d85cd6b521f93566c3edc27cc.exe	41
PID 3036 wrote to memory of 2416	3036	bb7252177d00b2242b820310ffe3b45f31ee666d85cd6b521f93566c3edc27cc.exe	41
PID 3036 wrote to memory of 2416	3036	bb7252177d00b2242b820310ffe3b45f31ee666d85cd6b521f93566c3edc27cc.exe	41
PID 3036 wrote to memory of 2112	3036	bb7252177d00b2242b820310ffe3b45f31ee666d85cd6b521f93566c3edc27cc.exe	43
PID 3036 wrote to memory of 2112	3036	bb7252177d00b2242b820310ffe3b45f31ee666d85cd6b521f93566c3edc27cc.exe	43
PID 3036 wrote to memory of 2112	3036	bb7252177d00b2242b820310ffe3b45f31ee666d85cd6b521f93566c3edc27cc.exe	43
PID 3036 wrote to memory of 1760	3036	bb7252177d00b2242b820310ffe3b45f31ee666d85cd6b521f93566c3edc27cc.exe	45
PID 3036 wrote to memory of 1760	3036	bb7252177d00b2242b820310ffe3b45f31ee666d85cd6b521f93566c3edc27cc.exe	45
PID 3036 wrote to memory of 1760	3036	bb7252177d00b2242b820310ffe3b45f31ee666d85cd6b521f93566c3edc27cc.exe	45
PID 3036 wrote to memory of 1596	3036	bb7252177d00b2242b820310ffe3b45f31ee666d85cd6b521f93566c3edc27cc.exe	47
PID 3036 wrote to memory of 1596	3036	bb7252177d00b2242b820310ffe3b45f31ee666d85cd6b521f93566c3edc27cc.exe	47
PID 3036 wrote to memory of 1596	3036	bb7252177d00b2242b820310ffe3b45f31ee666d85cd6b521f93566c3edc27cc.exe	47
PID 3036 wrote to memory of 2748	3036	bb7252177d00b2242b820310ffe3b45f31ee666d85cd6b521f93566c3edc27cc.exe	49
PID 3036 wrote to memory of 2748	3036	bb7252177d00b2242b820310ffe3b45f31ee666d85cd6b521f93566c3edc27cc.exe	49
PID 3036 wrote to memory of 2748	3036	bb7252177d00b2242b820310ffe3b45f31ee666d85cd6b521f93566c3edc27cc.exe	49
PID 3036 wrote to memory of 1480	3036	bb7252177d00b2242b820310ffe3b45f31ee666d85cd6b521f93566c3edc27cc.exe	51
PID 3036 wrote to memory of 1480	3036	bb7252177d00b2242b820310ffe3b45f31ee666d85cd6b521f93566c3edc27cc.exe	51
PID 3036 wrote to memory of 1480	3036	bb7252177d00b2242b820310ffe3b45f31ee666d85cd6b521f93566c3edc27cc.exe	51
PID 3036 wrote to memory of 2920	3036	bb7252177d00b2242b820310ffe3b45f31ee666d85cd6b521f93566c3edc27cc.exe	53
PID 3036 wrote to memory of 2920	3036	bb7252177d00b2242b820310ffe3b45f31ee666d85cd6b521f93566c3edc27cc.exe	53
PID 3036 wrote to memory of 2920	3036	bb7252177d00b2242b820310ffe3b45f31ee666d85cd6b521f93566c3edc27cc.exe	53
PID 2920 wrote to memory of 1628	2920	cmd.exe	55
PID 2920 wrote to memory of 1628	2920	cmd.exe	55
PID 2920 wrote to memory of 1628	2920	cmd.exe	55

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
2256	attrib.exe

C:\Users\Admin\AppData\Local\Temp\bb7252177d00b2242b820310ffe3b45f31ee666d85cd6b521f93566c3edc27cc.exe
"C:\Users\Admin\AppData\Local\Temp\bb7252177d00b2242b820310ffe3b45f31ee666d85cd6b521f93566c3edc27cc.exe"
1⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3036
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2688
- C:\Windows\system32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\bb7252177d00b2242b820310ffe3b45f31ee666d85cd6b521f93566c3edc27cc.exe"
  2⤵
  - Views/modifies file attributes
  PID:2256
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\bb7252177d00b2242b820310ffe3b45f31ee666d85cd6b521f93566c3edc27cc.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2720
- 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:2616
- 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:3004
- 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:2416
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2112
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:1760
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:1596
- 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:2748
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:1480
- C:\Windows\system32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\bb7252177d00b2242b820310ffe3b45f31ee666d85cd6b521f93566c3edc27cc.exe" && pause
  2⤵
  - Deletes itself
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:2920
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:1628

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\RTHU9PBS9B08Y4BKEPOA.temp

Filesize
7KB

MD5
f6dbcc0c2f840e9c759dc53a0efc1a10

SHA1
93a5a7152e0218b98ea37560d8d9a89705d441ae

SHA256
99db56d9391d79225f344eba7486179a0da0b53c964d712b1be4f566afa3005d

SHA512
7271507d0f5d605dec634d43dfcdef17eed678b89ffded1be6c924d6af81ab5e825b16fb9729d19660b0fbd070aef9203fe9c181daad5b8e8f2df3904bd1f64b

Download Submit
memory/2616-15-0x0000000001EF0000-0x0000000001EF8000-memory.dmp

Filesize
32KB

Download
memory/2616-14-0x000000001B540000-0x000000001B822000-memory.dmp

Filesize
2.9MB

Download
memory/2720-7-0x000000001B6D0000-0x000000001B9B2000-memory.dmp

Filesize
2.9MB

Download
memory/2720-8-0x0000000001FB0000-0x0000000001FB8000-memory.dmp

Filesize
32KB

Download
memory/2748-42-0x0000000001ED0000-0x0000000001ED8000-memory.dmp

Filesize
32KB

Download
memory/3036-0-0x000007FEF5BB3000-0x000007FEF5BB4000-memory.dmp

Filesize
4KB

Download
memory/3036-1-0x0000000000E90000-0x0000000000ED0000-memory.dmp

Filesize
256KB

Download
memory/3036-2-0x000007FEF5BB0000-0x000007FEF659C000-memory.dmp

Filesize
9.9MB

Download
memory/3036-46-0x000007FEF5BB0000-0x000007FEF659C000-memory.dmp

Filesize
9.9MB

Download