umbral | bf1ddaef01c54156875f83d24de19811476ad618bf126460a764c0cb13bcf3b7

Analysis

max time kernel
120s
max time network
121s
platform
windows7_x64
resource
win7-20240705-en
resource tags

arch:x64arch:x86image:win7-20240705-enlocale:en-usos:windows7-x64system
submitted
22-08-2024 19:45

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General

Target

ExtremeInjectorV3.exe
Size

228KB
MD5

92fe53ca6c8f1a424db45bb3f7cdfe56
SHA1

a6d4e261875b162f18f2cbbcc6411cec7b59be37
SHA256

bf1ddaef01c54156875f83d24de19811476ad618bf126460a764c0cb13bcf3b7
SHA512

c4ce50e070a07626fd766212428b15df7d4f4fe680acdc9b0ba084156aea4e4443dd76ddba8ff9d9551a5c00b53d784a716caa95df1a78d80a65dd1bca2c4a16
SSDEEP

6144:OloZM+rIkd8g+EtXHkv/iD4QL6XYe5xy4XKYZd8PRb8e1mLpsi:YoZtL+EP8QL6XYe5xy4XKYZd8hil

Score

10^/10

umbral credential_access discovery execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/2512-1-0x0000000000D00000-0x0000000000D40000-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
2068	powershell.exe
2792	powershell.exe
2144	powershell.exe
2152	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	ExtremeInjectorV3.exe

Deletes itself 1 IoCs

pid	Process
2092	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
2092	cmd.exe
1084	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
2176	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
1084	PING.EXE

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2512	ExtremeInjectorV3.exe
2068	powershell.exe
2792	powershell.exe
2144	powershell.exe
2948	powershell.exe
2152	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2512	ExtremeInjectorV3.exe
Token: SeIncreaseQuotaPrivilege	2140	wmic.exe
Token: SeSecurityPrivilege	2140	wmic.exe
Token: SeTakeOwnershipPrivilege	2140	wmic.exe
Token: SeLoadDriverPrivilege	2140	wmic.exe
Token: SeSystemProfilePrivilege	2140	wmic.exe
Token: SeSystemtimePrivilege	2140	wmic.exe
Token: SeProfSingleProcessPrivilege	2140	wmic.exe
Token: SeIncBasePriorityPrivilege	2140	wmic.exe
Token: SeCreatePagefilePrivilege	2140	wmic.exe
Token: SeBackupPrivilege	2140	wmic.exe
Token: SeRestorePrivilege	2140	wmic.exe
Token: SeShutdownPrivilege	2140	wmic.exe
Token: SeDebugPrivilege	2140	wmic.exe
Token: SeSystemEnvironmentPrivilege	2140	wmic.exe
Token: SeRemoteShutdownPrivilege	2140	wmic.exe
Token: SeUndockPrivilege	2140	wmic.exe
Token: SeManageVolumePrivilege	2140	wmic.exe
Token: 33	2140	wmic.exe
Token: 34	2140	wmic.exe
Token: 35	2140	wmic.exe
Token: SeIncreaseQuotaPrivilege	2140	wmic.exe
Token: SeSecurityPrivilege	2140	wmic.exe
Token: SeTakeOwnershipPrivilege	2140	wmic.exe
Token: SeLoadDriverPrivilege	2140	wmic.exe
Token: SeSystemProfilePrivilege	2140	wmic.exe
Token: SeSystemtimePrivilege	2140	wmic.exe
Token: SeProfSingleProcessPrivilege	2140	wmic.exe
Token: SeIncBasePriorityPrivilege	2140	wmic.exe
Token: SeCreatePagefilePrivilege	2140	wmic.exe
Token: SeBackupPrivilege	2140	wmic.exe
Token: SeRestorePrivilege	2140	wmic.exe
Token: SeShutdownPrivilege	2140	wmic.exe
Token: SeDebugPrivilege	2140	wmic.exe
Token: SeSystemEnvironmentPrivilege	2140	wmic.exe
Token: SeRemoteShutdownPrivilege	2140	wmic.exe
Token: SeUndockPrivilege	2140	wmic.exe
Token: SeManageVolumePrivilege	2140	wmic.exe
Token: 33	2140	wmic.exe
Token: 34	2140	wmic.exe
Token: 35	2140	wmic.exe
Token: SeDebugPrivilege	2068	powershell.exe
Token: SeDebugPrivilege	2792	powershell.exe
Token: SeDebugPrivilege	2144	powershell.exe
Token: SeDebugPrivilege	2948	powershell.exe
Token: SeIncreaseQuotaPrivilege	1460	wmic.exe
Token: SeSecurityPrivilege	1460	wmic.exe
Token: SeTakeOwnershipPrivilege	1460	wmic.exe
Token: SeLoadDriverPrivilege	1460	wmic.exe
Token: SeSystemProfilePrivilege	1460	wmic.exe
Token: SeSystemtimePrivilege	1460	wmic.exe
Token: SeProfSingleProcessPrivilege	1460	wmic.exe
Token: SeIncBasePriorityPrivilege	1460	wmic.exe
Token: SeCreatePagefilePrivilege	1460	wmic.exe
Token: SeBackupPrivilege	1460	wmic.exe
Token: SeRestorePrivilege	1460	wmic.exe
Token: SeShutdownPrivilege	1460	wmic.exe
Token: SeDebugPrivilege	1460	wmic.exe
Token: SeSystemEnvironmentPrivilege	1460	wmic.exe
Token: SeRemoteShutdownPrivilege	1460	wmic.exe
Token: SeUndockPrivilege	1460	wmic.exe
Token: SeManageVolumePrivilege	1460	wmic.exe
Token: 33	1460	wmic.exe
Token: 34	1460	wmic.exe

Suspicious use of WriteProcessMemory 39 IoCs

description	pid	Process	procid_target
PID 2512 wrote to memory of 2140	2512	ExtremeInjectorV3.exe	31
PID 2512 wrote to memory of 2140	2512	ExtremeInjectorV3.exe	31
PID 2512 wrote to memory of 2140	2512	ExtremeInjectorV3.exe	31
PID 2512 wrote to memory of 2856	2512	ExtremeInjectorV3.exe	34
PID 2512 wrote to memory of 2856	2512	ExtremeInjectorV3.exe	34
PID 2512 wrote to memory of 2856	2512	ExtremeInjectorV3.exe	34
PID 2512 wrote to memory of 2068	2512	ExtremeInjectorV3.exe	36
PID 2512 wrote to memory of 2068	2512	ExtremeInjectorV3.exe	36
PID 2512 wrote to memory of 2068	2512	ExtremeInjectorV3.exe	36
PID 2512 wrote to memory of 2792	2512	ExtremeInjectorV3.exe	38
PID 2512 wrote to memory of 2792	2512	ExtremeInjectorV3.exe	38
PID 2512 wrote to memory of 2792	2512	ExtremeInjectorV3.exe	38
PID 2512 wrote to memory of 2144	2512	ExtremeInjectorV3.exe	40
PID 2512 wrote to memory of 2144	2512	ExtremeInjectorV3.exe	40
PID 2512 wrote to memory of 2144	2512	ExtremeInjectorV3.exe	40
PID 2512 wrote to memory of 2948	2512	ExtremeInjectorV3.exe	42
PID 2512 wrote to memory of 2948	2512	ExtremeInjectorV3.exe	42
PID 2512 wrote to memory of 2948	2512	ExtremeInjectorV3.exe	42
PID 2512 wrote to memory of 1460	2512	ExtremeInjectorV3.exe	44
PID 2512 wrote to memory of 1460	2512	ExtremeInjectorV3.exe	44
PID 2512 wrote to memory of 1460	2512	ExtremeInjectorV3.exe	44
PID 2512 wrote to memory of 2920	2512	ExtremeInjectorV3.exe	46
PID 2512 wrote to memory of 2920	2512	ExtremeInjectorV3.exe	46
PID 2512 wrote to memory of 2920	2512	ExtremeInjectorV3.exe	46
PID 2512 wrote to memory of 2008	2512	ExtremeInjectorV3.exe	48
PID 2512 wrote to memory of 2008	2512	ExtremeInjectorV3.exe	48
PID 2512 wrote to memory of 2008	2512	ExtremeInjectorV3.exe	48
PID 2512 wrote to memory of 2152	2512	ExtremeInjectorV3.exe	50
PID 2512 wrote to memory of 2152	2512	ExtremeInjectorV3.exe	50
PID 2512 wrote to memory of 2152	2512	ExtremeInjectorV3.exe	50
PID 2512 wrote to memory of 2176	2512	ExtremeInjectorV3.exe	52
PID 2512 wrote to memory of 2176	2512	ExtremeInjectorV3.exe	52
PID 2512 wrote to memory of 2176	2512	ExtremeInjectorV3.exe	52
PID 2512 wrote to memory of 2092	2512	ExtremeInjectorV3.exe	54
PID 2512 wrote to memory of 2092	2512	ExtremeInjectorV3.exe	54
PID 2512 wrote to memory of 2092	2512	ExtremeInjectorV3.exe	54
PID 2092 wrote to memory of 1084	2092	cmd.exe	56
PID 2092 wrote to memory of 1084	2092	cmd.exe	56
PID 2092 wrote to memory of 1084	2092	cmd.exe	56

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
2856	attrib.exe

C:\Users\Admin\AppData\Local\Temp\ExtremeInjectorV3.exe
"C:\Users\Admin\AppData\Local\Temp\ExtremeInjectorV3.exe"
1⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2512
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2140
- C:\Windows\system32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\ExtremeInjectorV3.exe"
  2⤵
  - Views/modifies file attributes
  PID:2856
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\ExtremeInjectorV3.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2068
- 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:2792
- 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:2144
- 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:2948
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1460
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:2920
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:2008
- 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:2152
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:2176
- C:\Windows\system32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\ExtremeInjectorV3.exe" && pause
  2⤵
  - Deletes itself
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:2092
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:1084

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\23PSOS2ZOL5RSXG69XBJ.temp

Filesize
7KB

MD5
1c14daac5ac101d3dd0a77f5f4053640

SHA1
da1baeed332b684e16e28c49665ab3697d782b80

SHA256
6575094fbbe300d221580f73573923f6c44d17312a19d65067effa7d5a4fd6df

SHA512
3f84f6f1b41f655b69843933014fc5ee749ce8307fd5f579c69f18d2efa2e499569ad3c897f9e7e7f357fb3adceb4b5b5be41f4ad50fccb1eeda24714f841e1a

Download Submit
memory/2068-7-0x000000001B690000-0x000000001B972000-memory.dmp

Filesize
2.9MB

Download
memory/2068-8-0x0000000001ED0000-0x0000000001ED8000-memory.dmp

Filesize
32KB

Download
memory/2152-42-0x0000000002950000-0x0000000002958000-memory.dmp

Filesize
32KB

Download
memory/2512-0-0x000007FEF6683000-0x000007FEF6684000-memory.dmp

Filesize
4KB

Download
memory/2512-1-0x0000000000D00000-0x0000000000D40000-memory.dmp

Filesize
256KB

Download
memory/2512-2-0x000007FEF6680000-0x000007FEF706C000-memory.dmp

Filesize
9.9MB

Download
memory/2512-46-0x000007FEF6680000-0x000007FEF706C000-memory.dmp

Filesize
9.9MB

Download
memory/2792-14-0x000000001B5F0000-0x000000001B8D2000-memory.dmp

Filesize
2.9MB

Download
memory/2792-15-0x0000000001FF0000-0x0000000001FF8000-memory.dmp

Filesize
32KB

Download