umbral | dc1fd062f4b5dedf2e3c9e3a50f2c0bf6d96ec83bb12f95cab6cf47c395994b4

Analysis

max time kernel
149s
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
20-12-2024 11:49

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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 discovery execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral2/memory/3700-1-0x000001AB04590000-0x000001AB045D0000-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
1704	powershell.exe
3848	powershell.exe
2272	powershell.exe
2956	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
24	discord.com
25	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
6	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
2996	cmd.exe
1776	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
444	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
1776	PING.EXE

Suspicious behavior: EnumeratesProcesses 11 IoCs

pid	Process
3700	Crack.exe
1704	powershell.exe
1704	powershell.exe
2272	powershell.exe
2272	powershell.exe
2956	powershell.exe
2956	powershell.exe
228	powershell.exe
228	powershell.exe
3848	powershell.exe
3848	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	3700	Crack.exe
Token: SeIncreaseQuotaPrivilege	4384	wmic.exe
Token: SeSecurityPrivilege	4384	wmic.exe
Token: SeTakeOwnershipPrivilege	4384	wmic.exe
Token: SeLoadDriverPrivilege	4384	wmic.exe
Token: SeSystemProfilePrivilege	4384	wmic.exe
Token: SeSystemtimePrivilege	4384	wmic.exe
Token: SeProfSingleProcessPrivilege	4384	wmic.exe
Token: SeIncBasePriorityPrivilege	4384	wmic.exe
Token: SeCreatePagefilePrivilege	4384	wmic.exe
Token: SeBackupPrivilege	4384	wmic.exe
Token: SeRestorePrivilege	4384	wmic.exe
Token: SeShutdownPrivilege	4384	wmic.exe
Token: SeDebugPrivilege	4384	wmic.exe
Token: SeSystemEnvironmentPrivilege	4384	wmic.exe
Token: SeRemoteShutdownPrivilege	4384	wmic.exe
Token: SeUndockPrivilege	4384	wmic.exe
Token: SeManageVolumePrivilege	4384	wmic.exe
Token: 33	4384	wmic.exe
Token: 34	4384	wmic.exe
Token: 35	4384	wmic.exe
Token: 36	4384	wmic.exe
Token: SeIncreaseQuotaPrivilege	4384	wmic.exe
Token: SeSecurityPrivilege	4384	wmic.exe
Token: SeTakeOwnershipPrivilege	4384	wmic.exe
Token: SeLoadDriverPrivilege	4384	wmic.exe
Token: SeSystemProfilePrivilege	4384	wmic.exe
Token: SeSystemtimePrivilege	4384	wmic.exe
Token: SeProfSingleProcessPrivilege	4384	wmic.exe
Token: SeIncBasePriorityPrivilege	4384	wmic.exe
Token: SeCreatePagefilePrivilege	4384	wmic.exe
Token: SeBackupPrivilege	4384	wmic.exe
Token: SeRestorePrivilege	4384	wmic.exe
Token: SeShutdownPrivilege	4384	wmic.exe
Token: SeDebugPrivilege	4384	wmic.exe
Token: SeSystemEnvironmentPrivilege	4384	wmic.exe
Token: SeRemoteShutdownPrivilege	4384	wmic.exe
Token: SeUndockPrivilege	4384	wmic.exe
Token: SeManageVolumePrivilege	4384	wmic.exe
Token: 33	4384	wmic.exe
Token: 34	4384	wmic.exe
Token: 35	4384	wmic.exe
Token: 36	4384	wmic.exe
Token: SeDebugPrivilege	1704	powershell.exe
Token: SeDebugPrivilege	2272	powershell.exe
Token: SeDebugPrivilege	2956	powershell.exe
Token: SeDebugPrivilege	228	powershell.exe
Token: SeIncreaseQuotaPrivilege	1448	wmic.exe
Token: SeSecurityPrivilege	1448	wmic.exe
Token: SeTakeOwnershipPrivilege	1448	wmic.exe
Token: SeLoadDriverPrivilege	1448	wmic.exe
Token: SeSystemProfilePrivilege	1448	wmic.exe
Token: SeSystemtimePrivilege	1448	wmic.exe
Token: SeProfSingleProcessPrivilege	1448	wmic.exe
Token: SeIncBasePriorityPrivilege	1448	wmic.exe
Token: SeCreatePagefilePrivilege	1448	wmic.exe
Token: SeBackupPrivilege	1448	wmic.exe
Token: SeRestorePrivilege	1448	wmic.exe
Token: SeShutdownPrivilege	1448	wmic.exe
Token: SeDebugPrivilege	1448	wmic.exe
Token: SeSystemEnvironmentPrivilege	1448	wmic.exe
Token: SeRemoteShutdownPrivilege	1448	wmic.exe
Token: SeUndockPrivilege	1448	wmic.exe
Token: SeManageVolumePrivilege	1448	wmic.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 3700 wrote to memory of 4384	3700	Crack.exe	83
PID 3700 wrote to memory of 4384	3700	Crack.exe	83
PID 3700 wrote to memory of 4468	3700	Crack.exe	86
PID 3700 wrote to memory of 4468	3700	Crack.exe	86
PID 3700 wrote to memory of 1704	3700	Crack.exe	88
PID 3700 wrote to memory of 1704	3700	Crack.exe	88
PID 3700 wrote to memory of 2272	3700	Crack.exe	90
PID 3700 wrote to memory of 2272	3700	Crack.exe	90
PID 3700 wrote to memory of 2956	3700	Crack.exe	92
PID 3700 wrote to memory of 2956	3700	Crack.exe	92
PID 3700 wrote to memory of 228	3700	Crack.exe	94
PID 3700 wrote to memory of 228	3700	Crack.exe	94
PID 3700 wrote to memory of 1448	3700	Crack.exe	99
PID 3700 wrote to memory of 1448	3700	Crack.exe	99
PID 3700 wrote to memory of 3024	3700	Crack.exe	101
PID 3700 wrote to memory of 3024	3700	Crack.exe	101
PID 3700 wrote to memory of 4624	3700	Crack.exe	104
PID 3700 wrote to memory of 4624	3700	Crack.exe	104
PID 3700 wrote to memory of 3848	3700	Crack.exe	107
PID 3700 wrote to memory of 3848	3700	Crack.exe	107
PID 3700 wrote to memory of 444	3700	Crack.exe	109
PID 3700 wrote to memory of 444	3700	Crack.exe	109
PID 3700 wrote to memory of 2996	3700	Crack.exe	112
PID 3700 wrote to memory of 2996	3700	Crack.exe	112
PID 2996 wrote to memory of 1776	2996	cmd.exe	114
PID 2996 wrote to memory of 1776	2996	cmd.exe	114

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
4468	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:3700
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:4384
- C:\Windows\SYSTEM32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\Crack.exe"
  2⤵
  - Views/modifies file attributes
  PID:4468
- 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:1704
- 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:2272
- 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:2956
- 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:228
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1448
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:3024
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:4624
- 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:3848
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:444
- C:\Windows\SYSTEM32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\Crack.exe" && pause
  2⤵
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:2996
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:1776

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
77d622bb1a5b250869a3238b9bc1402b

SHA1
d47f4003c2554b9dfc4c16f22460b331886b191b

SHA256
f97ff12a8abf4bf88bb6497bd2ac2da12628c8847a8ba5a9026bdbb76507cdfb

SHA512
d6789b5499f23c9035375a102271e17a8a82e57d6f5312fa24242e08a83efdeb8becb7622f55c4cf1b89c7d864b445df11f4d994cf7e2f87a900535bcca12fd9

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

Filesize
948B

MD5
7249f5c73fd4c203cc0b5d76b5d550e6

SHA1
c36c86b0fff962ea5f44d40116554a8e7754a5d4

SHA256
fd9b15f7b9f160af704090a1781a61943f27baab50a42c62ac7b6df9f415e17d

SHA512
71a99f4051daa50099f26212d22920d38bde6ab1ee0f4f5a2a7dee312c49bb885e193fff1d218cb4f0980277b7b62d9801bf8cd7d356e5870e942989c920f346

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
1c8ed1293d221f14d6142addad60bb7e

SHA1
6c236459abbd5617fe62f1c1898c5cdc072f0bcb

SHA256
0992caa251b9bdf1f789dcf487dc29dad58f2376578573c037d106f608743dd5

SHA512
3a0716fdbd3a62a065e6f1c5479a495e98bafdd026a3b2c33a0d181ba06069f8f14e910daa69000432da983a0bb87ea4db804562149d58049e393ce0206fe52c

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_dd00i00f.fkf.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1704-4-0x00007FFD6F320000-0x00007FFD6FDE1000-memory.dmp

Filesize
10.8MB

Download
memory/1704-10-0x00000231F2990000-0x00000231F29B2000-memory.dmp

Filesize
136KB

Download
memory/1704-15-0x00007FFD6F320000-0x00007FFD6FDE1000-memory.dmp

Filesize
10.8MB

Download
memory/1704-18-0x00007FFD6F320000-0x00007FFD6FDE1000-memory.dmp

Filesize
10.8MB

Download
memory/1704-3-0x00007FFD6F320000-0x00007FFD6FDE1000-memory.dmp

Filesize
10.8MB

Download
memory/3700-34-0x000001AB1ED40000-0x000001AB1ED90000-memory.dmp

Filesize
320KB

Download
memory/3700-33-0x000001AB1ECC0000-0x000001AB1ED36000-memory.dmp

Filesize
472KB

Download
memory/3700-35-0x000001AB1EDB0000-0x000001AB1EDCE000-memory.dmp

Filesize
120KB

Download
memory/3700-1-0x000001AB04590000-0x000001AB045D0000-memory.dmp

Filesize
256KB

Download
memory/3700-0-0x00007FFD6F323000-0x00007FFD6F325000-memory.dmp

Filesize
8KB

Download
memory/3700-73-0x000001AB1EC90000-0x000001AB1ECA2000-memory.dmp

Filesize
72KB

Download
memory/3700-72-0x000001AB1EC60000-0x000001AB1EC6A000-memory.dmp

Filesize
40KB

Download
memory/3700-2-0x00007FFD6F320000-0x00007FFD6FDE1000-memory.dmp

Filesize
10.8MB

Download
memory/3700-88-0x00007FFD6F323000-0x00007FFD6F325000-memory.dmp

Filesize
8KB

Download
memory/3700-90-0x00007FFD6F320000-0x00007FFD6FDE1000-memory.dmp

Filesize
10.8MB

Download
memory/3700-95-0x00007FFD6F320000-0x00007FFD6FDE1000-memory.dmp

Filesize
10.8MB

Download