umbral | 0d40285ecea52026970582f409dc872e807b08bff8dae8d80586abb970561390

Analysis

max time kernel
95s
max time network
136s
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 11:54

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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/1388-0-0x000002960A040000-0x000002960A080000-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
3260	powershell.exe
3032	powershell.exe
1072	powershell.exe
760	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
21	discord.com
22	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
18	ip-api.com

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
1880	wmic.exe

Suspicious behavior: EnumeratesProcesses 10 IoCs

pid	Process
3260	powershell.exe
3260	powershell.exe
3032	powershell.exe
3032	powershell.exe
1072	powershell.exe
1072	powershell.exe
4596	powershell.exe
4596	powershell.exe
760	powershell.exe
760	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	1388	crackgroup.exe
Token: SeDebugPrivilege	3260	powershell.exe
Token: SeDebugPrivilege	3032	powershell.exe
Token: SeDebugPrivilege	1072	powershell.exe
Token: SeDebugPrivilege	4596	powershell.exe
Token: SeIncreaseQuotaPrivilege	2304	wmic.exe
Token: SeSecurityPrivilege	2304	wmic.exe
Token: SeTakeOwnershipPrivilege	2304	wmic.exe
Token: SeLoadDriverPrivilege	2304	wmic.exe
Token: SeSystemProfilePrivilege	2304	wmic.exe
Token: SeSystemtimePrivilege	2304	wmic.exe
Token: SeProfSingleProcessPrivilege	2304	wmic.exe
Token: SeIncBasePriorityPrivilege	2304	wmic.exe
Token: SeCreatePagefilePrivilege	2304	wmic.exe
Token: SeBackupPrivilege	2304	wmic.exe
Token: SeRestorePrivilege	2304	wmic.exe
Token: SeShutdownPrivilege	2304	wmic.exe
Token: SeDebugPrivilege	2304	wmic.exe
Token: SeSystemEnvironmentPrivilege	2304	wmic.exe
Token: SeRemoteShutdownPrivilege	2304	wmic.exe
Token: SeUndockPrivilege	2304	wmic.exe
Token: SeManageVolumePrivilege	2304	wmic.exe
Token: 33	2304	wmic.exe
Token: 34	2304	wmic.exe
Token: 35	2304	wmic.exe
Token: 36	2304	wmic.exe
Token: SeIncreaseQuotaPrivilege	2304	wmic.exe
Token: SeSecurityPrivilege	2304	wmic.exe
Token: SeTakeOwnershipPrivilege	2304	wmic.exe
Token: SeLoadDriverPrivilege	2304	wmic.exe
Token: SeSystemProfilePrivilege	2304	wmic.exe
Token: SeSystemtimePrivilege	2304	wmic.exe
Token: SeProfSingleProcessPrivilege	2304	wmic.exe
Token: SeIncBasePriorityPrivilege	2304	wmic.exe
Token: SeCreatePagefilePrivilege	2304	wmic.exe
Token: SeBackupPrivilege	2304	wmic.exe
Token: SeRestorePrivilege	2304	wmic.exe
Token: SeShutdownPrivilege	2304	wmic.exe
Token: SeDebugPrivilege	2304	wmic.exe
Token: SeSystemEnvironmentPrivilege	2304	wmic.exe
Token: SeRemoteShutdownPrivilege	2304	wmic.exe
Token: SeUndockPrivilege	2304	wmic.exe
Token: SeManageVolumePrivilege	2304	wmic.exe
Token: 33	2304	wmic.exe
Token: 34	2304	wmic.exe
Token: 35	2304	wmic.exe
Token: 36	2304	wmic.exe
Token: SeIncreaseQuotaPrivilege	3868	wmic.exe
Token: SeSecurityPrivilege	3868	wmic.exe
Token: SeTakeOwnershipPrivilege	3868	wmic.exe
Token: SeLoadDriverPrivilege	3868	wmic.exe
Token: SeSystemProfilePrivilege	3868	wmic.exe
Token: SeSystemtimePrivilege	3868	wmic.exe
Token: SeProfSingleProcessPrivilege	3868	wmic.exe
Token: SeIncBasePriorityPrivilege	3868	wmic.exe
Token: SeCreatePagefilePrivilege	3868	wmic.exe
Token: SeBackupPrivilege	3868	wmic.exe
Token: SeRestorePrivilege	3868	wmic.exe
Token: SeShutdownPrivilege	3868	wmic.exe
Token: SeDebugPrivilege	3868	wmic.exe
Token: SeSystemEnvironmentPrivilege	3868	wmic.exe
Token: SeRemoteShutdownPrivilege	3868	wmic.exe
Token: SeUndockPrivilege	3868	wmic.exe
Token: SeManageVolumePrivilege	3868	wmic.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 1388 wrote to memory of 3260	1388	crackgroup.exe	85
PID 1388 wrote to memory of 3260	1388	crackgroup.exe	85
PID 1388 wrote to memory of 3032	1388	crackgroup.exe	88
PID 1388 wrote to memory of 3032	1388	crackgroup.exe	88
PID 1388 wrote to memory of 1072	1388	crackgroup.exe	90
PID 1388 wrote to memory of 1072	1388	crackgroup.exe	90
PID 1388 wrote to memory of 4596	1388	crackgroup.exe	93
PID 1388 wrote to memory of 4596	1388	crackgroup.exe	93
PID 1388 wrote to memory of 2304	1388	crackgroup.exe	97
PID 1388 wrote to memory of 2304	1388	crackgroup.exe	97
PID 1388 wrote to memory of 3868	1388	crackgroup.exe	100
PID 1388 wrote to memory of 3868	1388	crackgroup.exe	100
PID 1388 wrote to memory of 3268	1388	crackgroup.exe	102
PID 1388 wrote to memory of 3268	1388	crackgroup.exe	102
PID 1388 wrote to memory of 760	1388	crackgroup.exe	104
PID 1388 wrote to memory of 760	1388	crackgroup.exe	104
PID 1388 wrote to memory of 1880	1388	crackgroup.exe	106
PID 1388 wrote to memory of 1880	1388	crackgroup.exe	106

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:1388
- 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:3260
- 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:3032
- 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:1072
- 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:4596
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2304
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:3868
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:3268
- 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:760
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:1880

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
6d3e9c29fe44e90aae6ed30ccf799ca8

SHA1
c7974ef72264bbdf13a2793ccf1aed11bc565dce

SHA256
2360634e63e8f0b5748e2c56ebb8f4aa78e71008ea7b5c9ca1c49be03b49557d

SHA512
60c38c4367352537545d859f64b9c5cbada94240478d1d039fd27b5ecba4dc1c90051557c16d802269703b873546ead416279c0a80c6fd5e49ad361cef22596a

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

Filesize
948B

MD5
c65738617888921a153bd9b1ef516ee7

SHA1
5245e71ea3c181d76320c857b639272ac9e079b1

SHA256
4640ba4001fd16a593315299cbdd4988dc2c7075820687f1018aac40aca95c26

SHA512
2e2a0ebd93f9d8dd07a7599054bce232683e9add9a35e77b584618040bcfd84a42545352519ec4736cc379002210b6f3ed2d905591c6925c0981b0392b495bfa

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
df90d53775b01ed0875c81dca33a0c35

SHA1
c48dedb031902c3b73bd0f65c3a20d30ef02042a

SHA256
af239bf9ef4f2ad19422b5ee77faa2465d9a79aaabaa19557ff08123c0357227

SHA512
68d88f8c93e42f3c7b600da67d676e46289aab0601604856d6e97bd120bffbdbfea3ac56d009c5fcbd42cc466bf1c1d3895f57876adc9e24ce440b554db8c7d6

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_2c5jtv11.l1o.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1388-69-0x000002960A520000-0x000002960A52A000-memory.dmp

Filesize
40KB

Download
memory/1388-33-0x000002960BD50000-0x000002960BD6E000-memory.dmp

Filesize
120KB

Download
memory/1388-88-0x00007FF973F30000-0x00007FF9749F1000-memory.dmp

Filesize
10.8MB

Download
memory/1388-70-0x000002960BD90000-0x000002960BDA2000-memory.dmp

Filesize
72KB

Download
memory/1388-2-0x00007FF973F30000-0x00007FF9749F1000-memory.dmp

Filesize
10.8MB

Download
memory/1388-31-0x0000029624620000-0x0000029624696000-memory.dmp

Filesize
472KB

Download
memory/1388-32-0x000002960BCF0000-0x000002960BD40000-memory.dmp

Filesize
320KB

Download
memory/1388-0-0x000002960A040000-0x000002960A080000-memory.dmp

Filesize
256KB

Download
memory/1388-1-0x00007FF973F33000-0x00007FF973F35000-memory.dmp

Filesize
8KB

Download
memory/3260-15-0x00007FF973F30000-0x00007FF9749F1000-memory.dmp

Filesize
10.8MB

Download
memory/3260-12-0x000001DA02B10000-0x000001DA02B32000-memory.dmp

Filesize
136KB

Download
memory/3260-14-0x00007FF973F30000-0x00007FF9749F1000-memory.dmp

Filesize
10.8MB

Download
memory/3260-13-0x00007FF973F30000-0x00007FF9749F1000-memory.dmp

Filesize
10.8MB

Download
memory/3260-18-0x00007FF973F30000-0x00007FF9749F1000-memory.dmp

Filesize
10.8MB

Download