umbral | bf1ddaef01c54156875f83d24de19811476ad618bf126460a764c0cb13bcf3b7

Analysis

max time kernel
148s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-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
behavioral2/memory/4052-1-0x00000264903B0000-0x00000264903F0000-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
3872	powershell.exe
1564	powershell.exe
1772	powershell.exe
1380	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
16	discord.com
17	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
8	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
372	cmd.exe
4064	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
4444	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
4064	PING.EXE

Suspicious behavior: EnumeratesProcesses 11 IoCs

pid	Process
4052	ExtremeInjectorV3.exe
3872	powershell.exe
3872	powershell.exe
1564	powershell.exe
1564	powershell.exe
1772	powershell.exe
1772	powershell.exe
376	powershell.exe
376	powershell.exe
1380	powershell.exe
1380	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	4052	ExtremeInjectorV3.exe
Token: SeIncreaseQuotaPrivilege	3244	wmic.exe
Token: SeSecurityPrivilege	3244	wmic.exe
Token: SeTakeOwnershipPrivilege	3244	wmic.exe
Token: SeLoadDriverPrivilege	3244	wmic.exe
Token: SeSystemProfilePrivilege	3244	wmic.exe
Token: SeSystemtimePrivilege	3244	wmic.exe
Token: SeProfSingleProcessPrivilege	3244	wmic.exe
Token: SeIncBasePriorityPrivilege	3244	wmic.exe
Token: SeCreatePagefilePrivilege	3244	wmic.exe
Token: SeBackupPrivilege	3244	wmic.exe
Token: SeRestorePrivilege	3244	wmic.exe
Token: SeShutdownPrivilege	3244	wmic.exe
Token: SeDebugPrivilege	3244	wmic.exe
Token: SeSystemEnvironmentPrivilege	3244	wmic.exe
Token: SeRemoteShutdownPrivilege	3244	wmic.exe
Token: SeUndockPrivilege	3244	wmic.exe
Token: SeManageVolumePrivilege	3244	wmic.exe
Token: 33	3244	wmic.exe
Token: 34	3244	wmic.exe
Token: 35	3244	wmic.exe
Token: 36	3244	wmic.exe
Token: SeIncreaseQuotaPrivilege	3244	wmic.exe
Token: SeSecurityPrivilege	3244	wmic.exe
Token: SeTakeOwnershipPrivilege	3244	wmic.exe
Token: SeLoadDriverPrivilege	3244	wmic.exe
Token: SeSystemProfilePrivilege	3244	wmic.exe
Token: SeSystemtimePrivilege	3244	wmic.exe
Token: SeProfSingleProcessPrivilege	3244	wmic.exe
Token: SeIncBasePriorityPrivilege	3244	wmic.exe
Token: SeCreatePagefilePrivilege	3244	wmic.exe
Token: SeBackupPrivilege	3244	wmic.exe
Token: SeRestorePrivilege	3244	wmic.exe
Token: SeShutdownPrivilege	3244	wmic.exe
Token: SeDebugPrivilege	3244	wmic.exe
Token: SeSystemEnvironmentPrivilege	3244	wmic.exe
Token: SeRemoteShutdownPrivilege	3244	wmic.exe
Token: SeUndockPrivilege	3244	wmic.exe
Token: SeManageVolumePrivilege	3244	wmic.exe
Token: 33	3244	wmic.exe
Token: 34	3244	wmic.exe
Token: 35	3244	wmic.exe
Token: 36	3244	wmic.exe
Token: SeDebugPrivilege	3872	powershell.exe
Token: SeDebugPrivilege	1564	powershell.exe
Token: SeDebugPrivilege	1772	powershell.exe
Token: SeDebugPrivilege	376	powershell.exe
Token: SeIncreaseQuotaPrivilege	220	wmic.exe
Token: SeSecurityPrivilege	220	wmic.exe
Token: SeTakeOwnershipPrivilege	220	wmic.exe
Token: SeLoadDriverPrivilege	220	wmic.exe
Token: SeSystemProfilePrivilege	220	wmic.exe
Token: SeSystemtimePrivilege	220	wmic.exe
Token: SeProfSingleProcessPrivilege	220	wmic.exe
Token: SeIncBasePriorityPrivilege	220	wmic.exe
Token: SeCreatePagefilePrivilege	220	wmic.exe
Token: SeBackupPrivilege	220	wmic.exe
Token: SeRestorePrivilege	220	wmic.exe
Token: SeShutdownPrivilege	220	wmic.exe
Token: SeDebugPrivilege	220	wmic.exe
Token: SeSystemEnvironmentPrivilege	220	wmic.exe
Token: SeRemoteShutdownPrivilege	220	wmic.exe
Token: SeUndockPrivilege	220	wmic.exe
Token: SeManageVolumePrivilege	220	wmic.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 4052 wrote to memory of 3244	4052	ExtremeInjectorV3.exe	86
PID 4052 wrote to memory of 3244	4052	ExtremeInjectorV3.exe	86
PID 4052 wrote to memory of 3572	4052	ExtremeInjectorV3.exe	91
PID 4052 wrote to memory of 3572	4052	ExtremeInjectorV3.exe	91
PID 4052 wrote to memory of 3872	4052	ExtremeInjectorV3.exe	93
PID 4052 wrote to memory of 3872	4052	ExtremeInjectorV3.exe	93
PID 4052 wrote to memory of 1564	4052	ExtremeInjectorV3.exe	95
PID 4052 wrote to memory of 1564	4052	ExtremeInjectorV3.exe	95
PID 4052 wrote to memory of 1772	4052	ExtremeInjectorV3.exe	99
PID 4052 wrote to memory of 1772	4052	ExtremeInjectorV3.exe	99
PID 4052 wrote to memory of 376	4052	ExtremeInjectorV3.exe	102
PID 4052 wrote to memory of 376	4052	ExtremeInjectorV3.exe	102
PID 4052 wrote to memory of 220	4052	ExtremeInjectorV3.exe	104
PID 4052 wrote to memory of 220	4052	ExtremeInjectorV3.exe	104
PID 4052 wrote to memory of 4380	4052	ExtremeInjectorV3.exe	106
PID 4052 wrote to memory of 4380	4052	ExtremeInjectorV3.exe	106
PID 4052 wrote to memory of 572	4052	ExtremeInjectorV3.exe	108
PID 4052 wrote to memory of 572	4052	ExtremeInjectorV3.exe	108
PID 4052 wrote to memory of 1380	4052	ExtremeInjectorV3.exe	110
PID 4052 wrote to memory of 1380	4052	ExtremeInjectorV3.exe	110
PID 4052 wrote to memory of 4444	4052	ExtremeInjectorV3.exe	112
PID 4052 wrote to memory of 4444	4052	ExtremeInjectorV3.exe	112
PID 4052 wrote to memory of 372	4052	ExtremeInjectorV3.exe	118
PID 4052 wrote to memory of 372	4052	ExtremeInjectorV3.exe	118
PID 372 wrote to memory of 4064	372	cmd.exe	120
PID 372 wrote to memory of 4064	372	cmd.exe	120

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
3572	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:4052
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:3244
- C:\Windows\SYSTEM32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\ExtremeInjectorV3.exe"
  2⤵
  - Views/modifies file attributes
  PID:3572
- 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:3872
- 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:1564
- 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:1772
- 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:376
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:220
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:4380
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:572
- 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:1380
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:4444
- 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:372
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:4064

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
6d3e9c29fe44e90aae6ed30ccf799ca8

SHA1
c7974ef72264bbdf13a2793ccf1aed11bc565dce

SHA256
2360634e63e8f0b5748e2c56ebb8f4aa78e71008ea7b5c9ca1c49be03b49557d

SHA512
60c38c4367352537545d859f64b9c5cbada94240478d1d039fd27b5ecba4dc1c90051557c16d802269703b873546ead416279c0a80c6fd5e49ad361cef22596a

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

Filesize
948B

MD5
2af06a6b36db9473e4a7d9c7ab72b70b

SHA1
8ef34b9b961e51bdd1b8d7d9db2ec1b0a4764645

SHA256
18a2aa7e245c6732f95fb7749b2b4d29007f2c56a9c5bfbc5e3c127bdfe5f158

SHA512
3495567a5d5af94ae27be51313d9e2630c52017d808042fe0d56baa34fa1d246eb15c253d14c77c77a1d8f2f1c81680e623044ae95415b095696e7fa141ac7cf

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

Filesize
1KB

MD5
276798eeb29a49dc6e199768bc9c2e71

SHA1
5fdc8ccb897ac2df7476fbb07517aca5b7a6205b

SHA256
cd0a1056e8f1b6cb5cb328532239d802f4e2aa8f8fcdc0fcb487684bd68e0dcc

SHA512
0d34fce64bbefc57d64fa6e03ca886952263d5f24df9c1c4cce6a1e8f5a47a9a21e9820f8d38caa7f7b43a52336ce00b738ea18419aaa7c788b72e04ce19e4f2

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

Filesize
1KB

MD5
ec1ba4a995d866b282087b26a0539bbc

SHA1
c4aeae2bc3fa9a898680648b20102f01e8a811cf

SHA256
469da678c3c0364b1b511962cffd44cbfc10aab5c1c528c0c09fd952f08d8a2c

SHA512
07bf757ec9d0d368d3ef1bfc2b562895e2708757f8fefa04fa50beaa6fb38af1018ea0cfccf5666c5c8baa4c894deead9652c53e0608aa6a83ef5b396dba43e9

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_fwkbisip.cg2.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/3872-14-0x00007FF960200000-0x00007FF960CC1000-memory.dmp

Filesize
10.8MB

Download
memory/3872-13-0x00000277D3A30000-0x00000277D3A52000-memory.dmp

Filesize
136KB

Download
memory/3872-15-0x00007FF960200000-0x00007FF960CC1000-memory.dmp

Filesize
10.8MB

Download
memory/3872-18-0x00007FF960200000-0x00007FF960CC1000-memory.dmp

Filesize
10.8MB

Download
memory/3872-3-0x00007FF960200000-0x00007FF960CC1000-memory.dmp

Filesize
10.8MB

Download
memory/4052-34-0x00000264AABC0000-0x00000264AAC10000-memory.dmp

Filesize
320KB

Download
memory/4052-33-0x00000264AAB40000-0x00000264AABB6000-memory.dmp

Filesize
472KB

Download
memory/4052-35-0x00000264920A0000-0x00000264920BE000-memory.dmp

Filesize
120KB

Download
memory/4052-1-0x00000264903B0000-0x00000264903F0000-memory.dmp

Filesize
256KB

Download
memory/4052-0-0x00007FF960203000-0x00007FF960205000-memory.dmp

Filesize
8KB

Download
memory/4052-71-0x0000026492050000-0x000002649205A000-memory.dmp

Filesize
40KB

Download
memory/4052-72-0x0000026492080000-0x0000026492092000-memory.dmp

Filesize
72KB

Download
memory/4052-2-0x00007FF960200000-0x00007FF960CC1000-memory.dmp

Filesize
10.8MB

Download
memory/4052-87-0x00007FF960203000-0x00007FF960205000-memory.dmp

Filesize
8KB

Download
memory/4052-88-0x00007FF960200000-0x00007FF960CC1000-memory.dmp

Filesize
10.8MB

Download
memory/4052-92-0x00007FF960200000-0x00007FF960CC1000-memory.dmp

Filesize
10.8MB

Download