umbral | 0d40285ecea52026970582f409dc872e807b08bff8dae8d80586abb970561390

Analysis

max time kernel
94s
max time network
148s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
04-08-2024 11:55

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General

Target

crackgroup.exe
Size

231KB
MD5

2d1b35b5d718c37ac6cf1daf74668c5c
SHA1

3db5006dbbb6cb3eb4a999823aebe3cd34e883f7
SHA256

0d40285ecea52026970582f409dc872e807b08bff8dae8d80586abb970561390
SHA512

118b13219915396427a2c25e1516cbe441ddad08cca0038ddb2a35967bb1ff2017fd6de554a95db68caf91119bee4076df61461ed35ceef8f8b0f07b5c930752
SSDEEP

6144:RloZMNrIkd8g+EtXHkv/iD48O94vFuW568VHCCHkqb8e1m8Mdi:joZmL+EP88O94vFuW568VHCCHrPM0

Score

10^/10

umbral credential_access execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral2/memory/3708-1-0x000001A0F13C0000-0x000001A0F1400000-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

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
1528	powershell.exe
4496	powershell.exe
3552	powershell.exe
4976	powershell.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
20	discord.com
21	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
12	ip-api.com

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
2884	wmic.exe

Suspicious behavior: EnumeratesProcesses 10 IoCs

pid	Process
4976	powershell.exe
4976	powershell.exe
4496	powershell.exe
4496	powershell.exe
3552	powershell.exe
3552	powershell.exe
4124	powershell.exe
4124	powershell.exe
1528	powershell.exe
1528	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	3708	crackgroup.exe
Token: SeDebugPrivilege	4976	powershell.exe
Token: SeDebugPrivilege	4496	powershell.exe
Token: SeDebugPrivilege	3552	powershell.exe
Token: SeDebugPrivilege	4124	powershell.exe
Token: SeIncreaseQuotaPrivilege	3888	wmic.exe
Token: SeSecurityPrivilege	3888	wmic.exe
Token: SeTakeOwnershipPrivilege	3888	wmic.exe
Token: SeLoadDriverPrivilege	3888	wmic.exe
Token: SeSystemProfilePrivilege	3888	wmic.exe
Token: SeSystemtimePrivilege	3888	wmic.exe
Token: SeProfSingleProcessPrivilege	3888	wmic.exe
Token: SeIncBasePriorityPrivilege	3888	wmic.exe
Token: SeCreatePagefilePrivilege	3888	wmic.exe
Token: SeBackupPrivilege	3888	wmic.exe
Token: SeRestorePrivilege	3888	wmic.exe
Token: SeShutdownPrivilege	3888	wmic.exe
Token: SeDebugPrivilege	3888	wmic.exe
Token: SeSystemEnvironmentPrivilege	3888	wmic.exe
Token: SeRemoteShutdownPrivilege	3888	wmic.exe
Token: SeUndockPrivilege	3888	wmic.exe
Token: SeManageVolumePrivilege	3888	wmic.exe
Token: 33	3888	wmic.exe
Token: 34	3888	wmic.exe
Token: 35	3888	wmic.exe
Token: 36	3888	wmic.exe
Token: SeIncreaseQuotaPrivilege	3888	wmic.exe
Token: SeSecurityPrivilege	3888	wmic.exe
Token: SeTakeOwnershipPrivilege	3888	wmic.exe
Token: SeLoadDriverPrivilege	3888	wmic.exe
Token: SeSystemProfilePrivilege	3888	wmic.exe
Token: SeSystemtimePrivilege	3888	wmic.exe
Token: SeProfSingleProcessPrivilege	3888	wmic.exe
Token: SeIncBasePriorityPrivilege	3888	wmic.exe
Token: SeCreatePagefilePrivilege	3888	wmic.exe
Token: SeBackupPrivilege	3888	wmic.exe
Token: SeRestorePrivilege	3888	wmic.exe
Token: SeShutdownPrivilege	3888	wmic.exe
Token: SeDebugPrivilege	3888	wmic.exe
Token: SeSystemEnvironmentPrivilege	3888	wmic.exe
Token: SeRemoteShutdownPrivilege	3888	wmic.exe
Token: SeUndockPrivilege	3888	wmic.exe
Token: SeManageVolumePrivilege	3888	wmic.exe
Token: 33	3888	wmic.exe
Token: 34	3888	wmic.exe
Token: 35	3888	wmic.exe
Token: 36	3888	wmic.exe
Token: SeIncreaseQuotaPrivilege	3280	wmic.exe
Token: SeSecurityPrivilege	3280	wmic.exe
Token: SeTakeOwnershipPrivilege	3280	wmic.exe
Token: SeLoadDriverPrivilege	3280	wmic.exe
Token: SeSystemProfilePrivilege	3280	wmic.exe
Token: SeSystemtimePrivilege	3280	wmic.exe
Token: SeProfSingleProcessPrivilege	3280	wmic.exe
Token: SeIncBasePriorityPrivilege	3280	wmic.exe
Token: SeCreatePagefilePrivilege	3280	wmic.exe
Token: SeBackupPrivilege	3280	wmic.exe
Token: SeRestorePrivilege	3280	wmic.exe
Token: SeShutdownPrivilege	3280	wmic.exe
Token: SeDebugPrivilege	3280	wmic.exe
Token: SeSystemEnvironmentPrivilege	3280	wmic.exe
Token: SeRemoteShutdownPrivilege	3280	wmic.exe
Token: SeUndockPrivilege	3280	wmic.exe
Token: SeManageVolumePrivilege	3280	wmic.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 3708 wrote to memory of 4976	3708	crackgroup.exe	85
PID 3708 wrote to memory of 4976	3708	crackgroup.exe	85
PID 3708 wrote to memory of 4496	3708	crackgroup.exe	88
PID 3708 wrote to memory of 4496	3708	crackgroup.exe	88
PID 3708 wrote to memory of 3552	3708	crackgroup.exe	90
PID 3708 wrote to memory of 3552	3708	crackgroup.exe	90
PID 3708 wrote to memory of 4124	3708	crackgroup.exe	92
PID 3708 wrote to memory of 4124	3708	crackgroup.exe	92
PID 3708 wrote to memory of 3888	3708	crackgroup.exe	94
PID 3708 wrote to memory of 3888	3708	crackgroup.exe	94
PID 3708 wrote to memory of 3280	3708	crackgroup.exe	97
PID 3708 wrote to memory of 3280	3708	crackgroup.exe	97
PID 3708 wrote to memory of 4448	3708	crackgroup.exe	99
PID 3708 wrote to memory of 4448	3708	crackgroup.exe	99
PID 3708 wrote to memory of 1528	3708	crackgroup.exe	101
PID 3708 wrote to memory of 1528	3708	crackgroup.exe	101
PID 3708 wrote to memory of 2884	3708	crackgroup.exe	103
PID 3708 wrote to memory of 2884	3708	crackgroup.exe	103

C:\Users\Admin\AppData\Local\Temp\crackgroup.exe
"C:\Users\Admin\AppData\Local\Temp\crackgroup.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3708
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\crackgroup.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4976
- 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:4496
- 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:3552
- 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:4124
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:3888
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:3280
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:4448
- 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:1528
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:2884

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
2KB

MD5
d85ba6ff808d9e5444a4b369f5bc2730

SHA1
31aa9d96590fff6981b315e0b391b575e4c0804a

SHA256
84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f

SHA512
8c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249

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

Filesize
944B

MD5
d28a889fd956d5cb3accfbaf1143eb6f

SHA1
157ba54b365341f8ff06707d996b3635da8446f7

SHA256
21e5d7ccf80a293e6ba30ed728846ca19c929c52b96e2c8d34e27cd2234f1d45

SHA512
0b6d88deb9be85722e6a78d5886d49f2caf407a59e128d2b4ed74c1356f9928c40048a62731959f2460e9ff9d9feee311043d2a37abe3bb92c2b76a44281478c

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

Filesize
948B

MD5
1a58f982c18490e622e00d4eb75ace5a

SHA1
60c30527b74659ecf09089a5a7c02a1df9a71b65

SHA256
4b7f800c0dea209162cc86627983993127eb20e3f8616646c41cb3ce15d9b39d

SHA512
ddab516a967783c5951717853aa5b3ef6dd5b442db50092888b2e7f3179fc68120fcde69a08d6ab280740eaadb6eadfc758c3118b52706f869e48ac1aebda480

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

Filesize
1KB

MD5
88be3bc8a7f90e3953298c0fdbec4d72

SHA1
f4969784ad421cc80ef45608727aacd0f6bf2e4b

SHA256
533c8470b41084e40c5660569ebbdb7496520d449629a235e8053e84025f348a

SHA512
4fce64e2dacddbc03314048fef1ce356ee2647c14733da121c23c65507eeb8d721d6b690ad5463319b364dc4fa95904ad6ab096907f32918e3406ef438a6ef7c

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

Filesize
1KB

MD5
ca58d1913d3261f116a299095e04f734

SHA1
941d13d0c8c65adb6513f23991acfa0d62facdea

SHA256
755daf72f2f5e983abb009c3b1eef4c7c660999f5ff581545bbcae7088c17c69

SHA512
87b0d8c9a5348235e9ad6416e09665764db1af408bf763857dc40e39411fa0cf405e3e8b9f0b8540c72aa874059d1dee865aa0cff8dba0fde5779ec9480b5e40

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_zgd0i1xz.fol.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/3708-0-0x00007FF8D0B13000-0x00007FF8D0B15000-memory.dmp

Filesize
8KB

Download
memory/3708-33-0x000001A0F3BC0000-0x000001A0F3C10000-memory.dmp

Filesize
320KB

Download
memory/3708-89-0x00007FF8D0B10000-0x00007FF8D15D1000-memory.dmp

Filesize
10.8MB

Download
memory/3708-71-0x000001A0F3AE0000-0x000001A0F3AF2000-memory.dmp

Filesize
72KB

Download
memory/3708-2-0x00007FF8D0B10000-0x00007FF8D15D1000-memory.dmp

Filesize
10.8MB

Download
memory/3708-1-0x000001A0F13C0000-0x000001A0F1400000-memory.dmp

Filesize
256KB

Download
memory/3708-32-0x000001A0F3B40000-0x000001A0F3BB6000-memory.dmp

Filesize
472KB

Download
memory/3708-70-0x000001A0F3990000-0x000001A0F399A000-memory.dmp

Filesize
40KB

Download
memory/3708-34-0x000001A0F3C30000-0x000001A0F3C4E000-memory.dmp

Filesize
120KB

Download
memory/4976-14-0x00007FF8D0B10000-0x00007FF8D15D1000-memory.dmp

Filesize
10.8MB

Download
memory/4976-13-0x00007FF8D0B10000-0x00007FF8D15D1000-memory.dmp

Filesize
10.8MB

Download
memory/4976-15-0x00007FF8D0B10000-0x00007FF8D15D1000-memory.dmp

Filesize
10.8MB

Download
memory/4976-19-0x00007FF8D0B10000-0x00007FF8D15D1000-memory.dmp

Filesize
10.8MB

Download
memory/4976-12-0x0000015FB9EA0000-0x0000015FB9EC2000-memory.dmp

Filesize
136KB

Download
memory/4976-18-0x0000015FB9B50000-0x0000015FB9D6C000-memory.dmp

Filesize
2.1MB

Download