umbral | 2592ac7a76bc435a210d3646794abf0a654937d0ce6553ebc14982480a169433

Analysis

max time kernel
99s
max time network
142s
platform
windows10-ltsc 2021_x64
resource
win10ltsc2021-20241211-en
resource tags

arch:x64arch:x86image:win10ltsc2021-20241211-enlocale:en-usos:windows10-ltsc 2021-x64system
submitted
26/12/2024, 17:52

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General

Target

Pass 8864/Argon/Argon.exe
Size

229KB
MD5

0141daae60d7dd08a86fc4789cfb3689
SHA1

791d4a8f158313d355fad6dafa158407e80581bf
SHA256

d22b7b3b76496cda8bcad31dce4b2b3ab5ed3b91926d744982e492e5b39cf296
SHA512

74255f2cbb6345b4aefd7822587ca9503da2e49d41bb4306eca4e6ef96293b0f1c7e3173c8eb27aac54c1b0abebb8306d0e1d4b9aa824b153a8cd563a6640f9c
SSDEEP

6144:FloZM0rIkd8g+EtXHkv/iD4+2S86YXzQUp8aLLyuOb8e1msi8i:HoZDL+EP8+2S86YXzQUp8aLLylA

Score

10^/10

umbral execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/5488-1-0x000002059E7F0000-0x000002059E830000-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
5172	powershell.exe
5364	powershell.exe
4440	powershell.exe
5612	powershell.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
25	discord.com
26	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
10	ip-api.com

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
232	wmic.exe

Suspicious behavior: EnumeratesProcesses 31 IoCs

pid	Process
3036	wmic.exe
3036	wmic.exe
3036	wmic.exe
3036	wmic.exe
5488	Argon.exe
5172	powershell.exe
5172	powershell.exe
5364	powershell.exe
5364	powershell.exe
4440	powershell.exe
4440	powershell.exe
4356	powershell.exe
4356	powershell.exe
640	wmic.exe
640	wmic.exe
640	wmic.exe
640	wmic.exe
2460	wmic.exe
2460	wmic.exe
2460	wmic.exe
2460	wmic.exe
3332	wmic.exe
3332	wmic.exe
3332	wmic.exe
3332	wmic.exe
5612	powershell.exe
5612	powershell.exe
232	wmic.exe
232	wmic.exe
232	wmic.exe
232	wmic.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	5488	Argon.exe
Token: SeIncreaseQuotaPrivilege	3036	wmic.exe
Token: SeSecurityPrivilege	3036	wmic.exe
Token: SeTakeOwnershipPrivilege	3036	wmic.exe
Token: SeLoadDriverPrivilege	3036	wmic.exe
Token: SeSystemProfilePrivilege	3036	wmic.exe
Token: SeSystemtimePrivilege	3036	wmic.exe
Token: SeProfSingleProcessPrivilege	3036	wmic.exe
Token: SeIncBasePriorityPrivilege	3036	wmic.exe
Token: SeCreatePagefilePrivilege	3036	wmic.exe
Token: SeBackupPrivilege	3036	wmic.exe
Token: SeRestorePrivilege	3036	wmic.exe
Token: SeShutdownPrivilege	3036	wmic.exe
Token: SeDebugPrivilege	3036	wmic.exe
Token: SeSystemEnvironmentPrivilege	3036	wmic.exe
Token: SeRemoteShutdownPrivilege	3036	wmic.exe
Token: SeUndockPrivilege	3036	wmic.exe
Token: SeManageVolumePrivilege	3036	wmic.exe
Token: 33	3036	wmic.exe
Token: 34	3036	wmic.exe
Token: 35	3036	wmic.exe
Token: 36	3036	wmic.exe
Token: SeIncreaseQuotaPrivilege	3036	wmic.exe
Token: SeSecurityPrivilege	3036	wmic.exe
Token: SeTakeOwnershipPrivilege	3036	wmic.exe
Token: SeLoadDriverPrivilege	3036	wmic.exe
Token: SeSystemProfilePrivilege	3036	wmic.exe
Token: SeSystemtimePrivilege	3036	wmic.exe
Token: SeProfSingleProcessPrivilege	3036	wmic.exe
Token: SeIncBasePriorityPrivilege	3036	wmic.exe
Token: SeCreatePagefilePrivilege	3036	wmic.exe
Token: SeBackupPrivilege	3036	wmic.exe
Token: SeRestorePrivilege	3036	wmic.exe
Token: SeShutdownPrivilege	3036	wmic.exe
Token: SeDebugPrivilege	3036	wmic.exe
Token: SeSystemEnvironmentPrivilege	3036	wmic.exe
Token: SeRemoteShutdownPrivilege	3036	wmic.exe
Token: SeUndockPrivilege	3036	wmic.exe
Token: SeManageVolumePrivilege	3036	wmic.exe
Token: 33	3036	wmic.exe
Token: 34	3036	wmic.exe
Token: 35	3036	wmic.exe
Token: 36	3036	wmic.exe
Token: SeDebugPrivilege	5172	powershell.exe
Token: SeIncreaseQuotaPrivilege	5172	powershell.exe
Token: SeSecurityPrivilege	5172	powershell.exe
Token: SeTakeOwnershipPrivilege	5172	powershell.exe
Token: SeLoadDriverPrivilege	5172	powershell.exe
Token: SeSystemProfilePrivilege	5172	powershell.exe
Token: SeSystemtimePrivilege	5172	powershell.exe
Token: SeProfSingleProcessPrivilege	5172	powershell.exe
Token: SeIncBasePriorityPrivilege	5172	powershell.exe
Token: SeCreatePagefilePrivilege	5172	powershell.exe
Token: SeBackupPrivilege	5172	powershell.exe
Token: SeRestorePrivilege	5172	powershell.exe
Token: SeShutdownPrivilege	5172	powershell.exe
Token: SeDebugPrivilege	5172	powershell.exe
Token: SeSystemEnvironmentPrivilege	5172	powershell.exe
Token: SeRemoteShutdownPrivilege	5172	powershell.exe
Token: SeUndockPrivilege	5172	powershell.exe
Token: SeManageVolumePrivilege	5172	powershell.exe
Token: 33	5172	powershell.exe
Token: 34	5172	powershell.exe
Token: 35	5172	powershell.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 5488 wrote to memory of 3036	5488	Argon.exe	82
PID 5488 wrote to memory of 3036	5488	Argon.exe	82
PID 5488 wrote to memory of 5172	5488	Argon.exe	85
PID 5488 wrote to memory of 5172	5488	Argon.exe	85
PID 5488 wrote to memory of 5364	5488	Argon.exe	88
PID 5488 wrote to memory of 5364	5488	Argon.exe	88
PID 5488 wrote to memory of 4440	5488	Argon.exe	90
PID 5488 wrote to memory of 4440	5488	Argon.exe	90
PID 5488 wrote to memory of 4356	5488	Argon.exe	92
PID 5488 wrote to memory of 4356	5488	Argon.exe	92
PID 5488 wrote to memory of 640	5488	Argon.exe	96
PID 5488 wrote to memory of 640	5488	Argon.exe	96
PID 5488 wrote to memory of 2460	5488	Argon.exe	99
PID 5488 wrote to memory of 2460	5488	Argon.exe	99
PID 5488 wrote to memory of 3332	5488	Argon.exe	101
PID 5488 wrote to memory of 3332	5488	Argon.exe	101
PID 5488 wrote to memory of 5612	5488	Argon.exe	103
PID 5488 wrote to memory of 5612	5488	Argon.exe	103
PID 5488 wrote to memory of 232	5488	Argon.exe	105
PID 5488 wrote to memory of 232	5488	Argon.exe	105

C:\Users\Admin\AppData\Local\Temp\Pass 8864\Argon\Argon.exe
"C:\Users\Admin\AppData\Local\Temp\Pass 8864\Argon\Argon.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:5488
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3036
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\Pass 8864\Argon\Argon.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:5172
- 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
  PID:5364
- 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
  PID:4440
- 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
  PID:4356
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  PID:640
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  PID:2460
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  PID:3332
- 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:5612
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  - Suspicious behavior: EnumeratesProcesses
  PID:232

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

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

System Information Discovery

T1082

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
3KB

MD5
3eb3833f769dd890afc295b977eab4b4

SHA1
e857649b037939602c72ad003e5d3698695f436f

SHA256
c485a6e2fd17c342fca60060f47d6a5655a65a412e35e001bb5bf88d96e6e485

SHA512
c24bbc8f278478d43756807b8c584d4e3fb2289db468bc92986a489f74a8da386a667a758360a397e77e018e363be8912ac260072fa3e31117ad0599ac749e72

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

Filesize
1KB

MD5
60b3262c3163ee3d466199160b9ed07d

SHA1
994ece4ea4e61de0be2fdd580f87e3415f9e1ff6

SHA256
e3b30f16d41f94cba2b8a75f35c91ae7418465abfbfe5477ec0551d1952b2fdb

SHA512
081d2015cb94477eb0fbc38f44b6d9b4a3204fb3ad0b7d0e146a88ab4ab9a0d475207f1adae03f4a81ccc5beb7568dc8be1249f69e32fe56efd9ee2f6ee3b1af

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

Filesize
948B

MD5
71a2894e51646537b85d31d6f7014625

SHA1
07d6e020c72cd94b2cbae2d5b8ac238278a56636

SHA256
0c817dae2699f50343c50134d08b44ada35abca654cc805403624dbd4d4fb4f5

SHA512
a4838e5d8704aab2653eafab26ef43ecded6b06b76000c2061e5b0347a3164619399bf3453f1fce2646a70fd7fb429477d31dfa01542d30ca57efe9084059b46

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

Filesize
1KB

MD5
8e1fdd1b66d2fee9f6a052524d4ddca5

SHA1
0a9d0994559d1be2eecd8b0d6960540ca627bdb6

SHA256
4cc7c1b79d1b48582d4dc27ca8c31457b9bf2441deb7914399bb9e6863f18b13

SHA512
5a5494b878b08e8515811ab7a3d68780dac7423f5562477d98249a8bedf7ec98567b7cd5d4c6967d6bc63f2d6d9b7da9a65e0eb29d4b955026b469b5b598d1f3

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

Filesize
1KB

MD5
e9e5ec06dc4a7619c5107166782579e1

SHA1
87fcd6b510a4ca8f970a1157ce8b6d7492e6c912

SHA256
fc9dc76fcb25c0fbbe98ab154bd5b61d810f1d8fe87c70aeb7d51df1ed4ccdcd

SHA512
e49718b17846f8c680f5904bc2d23ad2b619af5054aef91dc0f5fb6695d5909b809efd3577b990045e9be07a40eec7a8e98025cd8f42f0101a02dad5a0ff9aa9

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_4dat5fzb.jbi.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/5172-3-0x00007FFCDEF60000-0x00007FFCDFA22000-memory.dmp

Filesize
10.8MB

Download
memory/5172-14-0x00007FFCDEF60000-0x00007FFCDFA22000-memory.dmp

Filesize
10.8MB

Download
memory/5172-15-0x00007FFCDEF60000-0x00007FFCDFA22000-memory.dmp

Filesize
10.8MB

Download
memory/5172-18-0x00007FFCDEF60000-0x00007FFCDFA22000-memory.dmp

Filesize
10.8MB

Download
memory/5172-4-0x000001AB23850000-0x000001AB23872000-memory.dmp

Filesize
136KB

Download
memory/5488-32-0x00000205A0720000-0x00000205A0770000-memory.dmp

Filesize
320KB

Download
memory/5488-31-0x00000205B8F50000-0x00000205B8FC6000-memory.dmp

Filesize
472KB

Download
memory/5488-33-0x00000205A06D0000-0x00000205A06EE000-memory.dmp

Filesize
120KB

Download
memory/5488-1-0x000002059E7F0000-0x000002059E830000-memory.dmp

Filesize
256KB

Download
memory/5488-0-0x00007FFCDEF63000-0x00007FFCDEF65000-memory.dmp

Filesize
8KB

Download
memory/5488-57-0x00000205A0700000-0x00000205A070A000-memory.dmp

Filesize
40KB

Download
memory/5488-58-0x00000205B9110000-0x00000205B9122000-memory.dmp

Filesize
72KB

Download
memory/5488-2-0x00007FFCDEF60000-0x00007FFCDFA22000-memory.dmp

Filesize
10.8MB

Download
memory/5488-73-0x00007FFCDEF63000-0x00007FFCDEF65000-memory.dmp

Filesize
8KB

Download
memory/5488-77-0x00007FFCDEF60000-0x00007FFCDFA22000-memory.dmp

Filesize
10.8MB

Download