umbral | bf1ddaef01c54156875f83d24de19811476ad618bf126460a764c0cb13bcf3b7

Analysis

max time kernel
147s
max time network
150s
platform
windows11-21h2_x64
resource
win11-20240802-en
resource tags

arch:x64arch:x86image:win11-20240802-enlocale:en-usos:windows11-21h2-x64system
submitted
22-08-2024 19:37

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

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
behavioral4/memory/3684-1-0x000001D888440000-0x000001D888480000-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
4760	powershell.exe
3544	powershell.exe
3188	powershell.exe
2256	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	ExtremeInjectorV3.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
1	discord.com
6	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
1	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
4824	cmd.exe
3284	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
4352	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
3284	PING.EXE

Suspicious behavior: EnumeratesProcesses 11 IoCs

pid	Process
3684	ExtremeInjectorV3.exe
4760	powershell.exe
4760	powershell.exe
3544	powershell.exe
3544	powershell.exe
3188	powershell.exe
3188	powershell.exe
3672	powershell.exe
3672	powershell.exe
2256	powershell.exe
2256	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	3684	ExtremeInjectorV3.exe
Token: SeIncreaseQuotaPrivilege	5008	wmic.exe
Token: SeSecurityPrivilege	5008	wmic.exe
Token: SeTakeOwnershipPrivilege	5008	wmic.exe
Token: SeLoadDriverPrivilege	5008	wmic.exe
Token: SeSystemProfilePrivilege	5008	wmic.exe
Token: SeSystemtimePrivilege	5008	wmic.exe
Token: SeProfSingleProcessPrivilege	5008	wmic.exe
Token: SeIncBasePriorityPrivilege	5008	wmic.exe
Token: SeCreatePagefilePrivilege	5008	wmic.exe
Token: SeBackupPrivilege	5008	wmic.exe
Token: SeRestorePrivilege	5008	wmic.exe
Token: SeShutdownPrivilege	5008	wmic.exe
Token: SeDebugPrivilege	5008	wmic.exe
Token: SeSystemEnvironmentPrivilege	5008	wmic.exe
Token: SeRemoteShutdownPrivilege	5008	wmic.exe
Token: SeUndockPrivilege	5008	wmic.exe
Token: SeManageVolumePrivilege	5008	wmic.exe
Token: 33	5008	wmic.exe
Token: 34	5008	wmic.exe
Token: 35	5008	wmic.exe
Token: 36	5008	wmic.exe
Token: SeIncreaseQuotaPrivilege	5008	wmic.exe
Token: SeSecurityPrivilege	5008	wmic.exe
Token: SeTakeOwnershipPrivilege	5008	wmic.exe
Token: SeLoadDriverPrivilege	5008	wmic.exe
Token: SeSystemProfilePrivilege	5008	wmic.exe
Token: SeSystemtimePrivilege	5008	wmic.exe
Token: SeProfSingleProcessPrivilege	5008	wmic.exe
Token: SeIncBasePriorityPrivilege	5008	wmic.exe
Token: SeCreatePagefilePrivilege	5008	wmic.exe
Token: SeBackupPrivilege	5008	wmic.exe
Token: SeRestorePrivilege	5008	wmic.exe
Token: SeShutdownPrivilege	5008	wmic.exe
Token: SeDebugPrivilege	5008	wmic.exe
Token: SeSystemEnvironmentPrivilege	5008	wmic.exe
Token: SeRemoteShutdownPrivilege	5008	wmic.exe
Token: SeUndockPrivilege	5008	wmic.exe
Token: SeManageVolumePrivilege	5008	wmic.exe
Token: 33	5008	wmic.exe
Token: 34	5008	wmic.exe
Token: 35	5008	wmic.exe
Token: 36	5008	wmic.exe
Token: SeDebugPrivilege	4760	powershell.exe
Token: SeDebugPrivilege	3544	powershell.exe
Token: SeDebugPrivilege	3188	powershell.exe
Token: SeDebugPrivilege	3672	powershell.exe
Token: SeIncreaseQuotaPrivilege	4812	wmic.exe
Token: SeSecurityPrivilege	4812	wmic.exe
Token: SeTakeOwnershipPrivilege	4812	wmic.exe
Token: SeLoadDriverPrivilege	4812	wmic.exe
Token: SeSystemProfilePrivilege	4812	wmic.exe
Token: SeSystemtimePrivilege	4812	wmic.exe
Token: SeProfSingleProcessPrivilege	4812	wmic.exe
Token: SeIncBasePriorityPrivilege	4812	wmic.exe
Token: SeCreatePagefilePrivilege	4812	wmic.exe
Token: SeBackupPrivilege	4812	wmic.exe
Token: SeRestorePrivilege	4812	wmic.exe
Token: SeShutdownPrivilege	4812	wmic.exe
Token: SeDebugPrivilege	4812	wmic.exe
Token: SeSystemEnvironmentPrivilege	4812	wmic.exe
Token: SeRemoteShutdownPrivilege	4812	wmic.exe
Token: SeUndockPrivilege	4812	wmic.exe
Token: SeManageVolumePrivilege	4812	wmic.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 3684 wrote to memory of 5008	3684	ExtremeInjectorV3.exe	83
PID 3684 wrote to memory of 5008	3684	ExtremeInjectorV3.exe	83
PID 3684 wrote to memory of 332	3684	ExtremeInjectorV3.exe	86
PID 3684 wrote to memory of 332	3684	ExtremeInjectorV3.exe	86
PID 3684 wrote to memory of 4760	3684	ExtremeInjectorV3.exe	88
PID 3684 wrote to memory of 4760	3684	ExtremeInjectorV3.exe	88
PID 3684 wrote to memory of 3544	3684	ExtremeInjectorV3.exe	90
PID 3684 wrote to memory of 3544	3684	ExtremeInjectorV3.exe	90
PID 3684 wrote to memory of 3188	3684	ExtremeInjectorV3.exe	92
PID 3684 wrote to memory of 3188	3684	ExtremeInjectorV3.exe	92
PID 3684 wrote to memory of 3672	3684	ExtremeInjectorV3.exe	94
PID 3684 wrote to memory of 3672	3684	ExtremeInjectorV3.exe	94
PID 3684 wrote to memory of 4812	3684	ExtremeInjectorV3.exe	96
PID 3684 wrote to memory of 4812	3684	ExtremeInjectorV3.exe	96
PID 3684 wrote to memory of 2780	3684	ExtremeInjectorV3.exe	98
PID 3684 wrote to memory of 2780	3684	ExtremeInjectorV3.exe	98
PID 3684 wrote to memory of 3800	3684	ExtremeInjectorV3.exe	100
PID 3684 wrote to memory of 3800	3684	ExtremeInjectorV3.exe	100
PID 3684 wrote to memory of 2256	3684	ExtremeInjectorV3.exe	102
PID 3684 wrote to memory of 2256	3684	ExtremeInjectorV3.exe	102
PID 3684 wrote to memory of 4352	3684	ExtremeInjectorV3.exe	104
PID 3684 wrote to memory of 4352	3684	ExtremeInjectorV3.exe	104
PID 3684 wrote to memory of 4824	3684	ExtremeInjectorV3.exe	106
PID 3684 wrote to memory of 4824	3684	ExtremeInjectorV3.exe	106
PID 4824 wrote to memory of 3284	4824	cmd.exe	108
PID 4824 wrote to memory of 3284	4824	cmd.exe	108

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
332	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:3684
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:5008
- C:\Windows\SYSTEM32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\ExtremeInjectorV3.exe"
  2⤵
  - Views/modifies file attributes
  PID:332
- 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:4760
- 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:3544
- 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:3188
- 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:3672
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:4812
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:2780
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:3800
- 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:2256
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:4352
- C:\Windows\SYSTEM32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\ExtremeInjectorV3.exe" && pause
  2⤵
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:4824
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:3284

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\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log

Filesize
2KB

MD5
627073ee3ca9676911bee35548eff2b8

SHA1
4c4b68c65e2cab9864b51167d710aa29ebdcff2e

SHA256
85b280a39fc31ba1e15fb06102a05b8405ff3b82feb181d4170f04e466dd647c

SHA512
3c5f6c03e253b83c57e8d6f0334187dbdcdf4fa549eecd36cbc1322dca6d3ca891dc6a019c49ec2eafb88f82d0434299c31e4dfaab123acb42e0546218f311fb

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

Filesize
944B

MD5
2e8eb51096d6f6781456fef7df731d97

SHA1
ec2aaf851a618fb43c3d040a13a71997c25bda43

SHA256
96bfd9dd5883329927fe8c08b8956355a1a6ceb30ceeb5d4252b346df32bc864

SHA512
0a73dc9a49f92d9dd556c2ca2e36761890b3538f355ee1f013e7cf648d8c4d065f28046cd4a167db3dea304d1fbcbcea68d11ce6e12a3f20f8b6c018a60422d2

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

Filesize
948B

MD5
6bddc96a32b9ed8fc70b141ccf4a39b2

SHA1
0f33c0699da40a5eadcec646791cf21cdb0dd7c6

SHA256
cb3853abe77eb0da8a1caccb49e97a573b6f35570722eb759116a645d724c132

SHA512
e41f1597b4129b759e4199db195df1c24e47cc47dc9850fab2d48e44bc3d37dc3658fbfbb62332a0b93c552587d7fab09de1634f605faa2209b8470c2a6eaca6

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

Filesize
1KB

MD5
7332074ae2b01262736b6fbd9e100dac

SHA1
22f992165065107cc9417fa4117240d84414a13c

SHA256
baea84fda6c1f13090b8cbd91c920848946f10ce155ef31a1df4cd453ee7e4aa

SHA512
4ae6f0e012c31ac1fc2ff4a8877ce2b4667c45b6e651de798318a39a2b6fd39a6f72dffa8b0b89b7a045a27d724d195656faa25a9fec79b22f37ddebb5d22da2

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

Filesize
1KB

MD5
60a84ea8f3888e51bb0fe4856926a639

SHA1
43848b5a831f8fe7623694b36b17554b83770269

SHA256
5d219511d1091f4dc52ef6664815bcacf013c76b695bf2195aa439a6cc431504

SHA512
f6381deedc9612c96914173d948bd601192256c1b65a6b6be3c6664de84df64fb8740fa0205846e0380305bf5442e52991d134ff94b8edc899775befcc4a86ba

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_qpz1spme.an1.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/3684-67-0x000001D88A290000-0x000001D88A29A000-memory.dmp

Filesize
40KB

Download
memory/3684-33-0x000001D88A260000-0x000001D88A27E000-memory.dmp

Filesize
120KB

Download
memory/3684-87-0x00007FFA04F50000-0x00007FFA05A12000-memory.dmp

Filesize
10.8MB

Download
memory/3684-83-0x00007FFA04F50000-0x00007FFA05A12000-memory.dmp

Filesize
10.8MB

Download
memory/3684-2-0x00007FFA04F50000-0x00007FFA05A12000-memory.dmp

Filesize
10.8MB

Download
memory/3684-31-0x000001D88A300000-0x000001D88A376000-memory.dmp

Filesize
472KB

Download
memory/3684-32-0x000001D8A2CE0000-0x000001D8A2D30000-memory.dmp

Filesize
320KB

Download
memory/3684-82-0x00007FFA04F53000-0x00007FFA04F55000-memory.dmp

Filesize
8KB

Download
memory/3684-1-0x000001D888440000-0x000001D888480000-memory.dmp

Filesize
256KB

Download
memory/3684-0-0x00007FFA04F53000-0x00007FFA04F55000-memory.dmp

Filesize
8KB

Download
memory/3684-68-0x000001D88A3A0000-0x000001D88A3B2000-memory.dmp

Filesize
72KB

Download
memory/4760-5-0x00007FFA04F50000-0x00007FFA05A12000-memory.dmp

Filesize
10.8MB

Download
memory/4760-4-0x00000299F8A70000-0x00000299F8A92000-memory.dmp

Filesize
136KB

Download
memory/4760-14-0x00007FFA04F50000-0x00007FFA05A12000-memory.dmp

Filesize
10.8MB

Download
memory/4760-3-0x00007FFA04F50000-0x00007FFA05A12000-memory.dmp

Filesize
10.8MB

Download
memory/4760-17-0x00007FFA04F50000-0x00007FFA05A12000-memory.dmp

Filesize
10.8MB

Download