umbral | 6b5a764726812a78d0f0cfff4921f2c15c47f7cc265cb7dd9f293aa4728a1c19

Analysis

max time kernel
428s
max time network
434s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
28-11-2024 02:17

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General

Target

cybersec multitool.exe
Size

631KB
MD5

8b2224504b56a273fcb096f266c8946e
SHA1

d25adb8c1e4370e4e5de7e69eead5737404e9401
SHA256

6b5a764726812a78d0f0cfff4921f2c15c47f7cc265cb7dd9f293aa4728a1c19
SHA512

1d3fe9628dd39b4d94fe8e6ed5e58576337a7a94effce38530530c695fb25fbe4e8a3c62efc73d0511a3daa8966afec7d559a50c48483451e68d04cbc9229479
SSDEEP

12288:5oZtL+EP8YOkSt74szYKrd4UBnvmiMdRC:XI8vkSt74szYKrd4UBn+iMdA

Score

10^/10

umbral discovery execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/4900-1-0x000001F8830A0000-0x000001F883144000-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
4332	powershell.exe
456	powershell.exe
3008	powershell.exe
4076	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	cybersec multitool.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
27	discord.com
28	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

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
4192	cmd.exe
1592	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
4672	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
1592	PING.EXE

Suspicious behavior: EnumeratesProcesses 11 IoCs

pid	Process
4900	cybersec multitool.exe
4332	powershell.exe
4332	powershell.exe
3008	powershell.exe
3008	powershell.exe
4076	powershell.exe
4076	powershell.exe
1916	powershell.exe
1916	powershell.exe
456	powershell.exe
456	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	4900	cybersec multitool.exe
Token: SeIncreaseQuotaPrivilege	2480	wmic.exe
Token: SeSecurityPrivilege	2480	wmic.exe
Token: SeTakeOwnershipPrivilege	2480	wmic.exe
Token: SeLoadDriverPrivilege	2480	wmic.exe
Token: SeSystemProfilePrivilege	2480	wmic.exe
Token: SeSystemtimePrivilege	2480	wmic.exe
Token: SeProfSingleProcessPrivilege	2480	wmic.exe
Token: SeIncBasePriorityPrivilege	2480	wmic.exe
Token: SeCreatePagefilePrivilege	2480	wmic.exe
Token: SeBackupPrivilege	2480	wmic.exe
Token: SeRestorePrivilege	2480	wmic.exe
Token: SeShutdownPrivilege	2480	wmic.exe
Token: SeDebugPrivilege	2480	wmic.exe
Token: SeSystemEnvironmentPrivilege	2480	wmic.exe
Token: SeRemoteShutdownPrivilege	2480	wmic.exe
Token: SeUndockPrivilege	2480	wmic.exe
Token: SeManageVolumePrivilege	2480	wmic.exe
Token: 33	2480	wmic.exe
Token: 34	2480	wmic.exe
Token: 35	2480	wmic.exe
Token: 36	2480	wmic.exe
Token: SeIncreaseQuotaPrivilege	2480	wmic.exe
Token: SeSecurityPrivilege	2480	wmic.exe
Token: SeTakeOwnershipPrivilege	2480	wmic.exe
Token: SeLoadDriverPrivilege	2480	wmic.exe
Token: SeSystemProfilePrivilege	2480	wmic.exe
Token: SeSystemtimePrivilege	2480	wmic.exe
Token: SeProfSingleProcessPrivilege	2480	wmic.exe
Token: SeIncBasePriorityPrivilege	2480	wmic.exe
Token: SeCreatePagefilePrivilege	2480	wmic.exe
Token: SeBackupPrivilege	2480	wmic.exe
Token: SeRestorePrivilege	2480	wmic.exe
Token: SeShutdownPrivilege	2480	wmic.exe
Token: SeDebugPrivilege	2480	wmic.exe
Token: SeSystemEnvironmentPrivilege	2480	wmic.exe
Token: SeRemoteShutdownPrivilege	2480	wmic.exe
Token: SeUndockPrivilege	2480	wmic.exe
Token: SeManageVolumePrivilege	2480	wmic.exe
Token: 33	2480	wmic.exe
Token: 34	2480	wmic.exe
Token: 35	2480	wmic.exe
Token: 36	2480	wmic.exe
Token: SeDebugPrivilege	4332	powershell.exe
Token: SeDebugPrivilege	3008	powershell.exe
Token: SeDebugPrivilege	4076	powershell.exe
Token: SeDebugPrivilege	1916	powershell.exe
Token: SeIncreaseQuotaPrivilege	1332	wmic.exe
Token: SeSecurityPrivilege	1332	wmic.exe
Token: SeTakeOwnershipPrivilege	1332	wmic.exe
Token: SeLoadDriverPrivilege	1332	wmic.exe
Token: SeSystemProfilePrivilege	1332	wmic.exe
Token: SeSystemtimePrivilege	1332	wmic.exe
Token: SeProfSingleProcessPrivilege	1332	wmic.exe
Token: SeIncBasePriorityPrivilege	1332	wmic.exe
Token: SeCreatePagefilePrivilege	1332	wmic.exe
Token: SeBackupPrivilege	1332	wmic.exe
Token: SeRestorePrivilege	1332	wmic.exe
Token: SeShutdownPrivilege	1332	wmic.exe
Token: SeDebugPrivilege	1332	wmic.exe
Token: SeSystemEnvironmentPrivilege	1332	wmic.exe
Token: SeRemoteShutdownPrivilege	1332	wmic.exe
Token: SeUndockPrivilege	1332	wmic.exe
Token: SeManageVolumePrivilege	1332	wmic.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 4900 wrote to memory of 2480	4900	cybersec multitool.exe	86
PID 4900 wrote to memory of 2480	4900	cybersec multitool.exe	86
PID 4900 wrote to memory of 4956	4900	cybersec multitool.exe	89
PID 4900 wrote to memory of 4956	4900	cybersec multitool.exe	89
PID 4900 wrote to memory of 4332	4900	cybersec multitool.exe	91
PID 4900 wrote to memory of 4332	4900	cybersec multitool.exe	91
PID 4900 wrote to memory of 3008	4900	cybersec multitool.exe	93
PID 4900 wrote to memory of 3008	4900	cybersec multitool.exe	93
PID 4900 wrote to memory of 4076	4900	cybersec multitool.exe	97
PID 4900 wrote to memory of 4076	4900	cybersec multitool.exe	97
PID 4900 wrote to memory of 1916	4900	cybersec multitool.exe	99
PID 4900 wrote to memory of 1916	4900	cybersec multitool.exe	99
PID 4900 wrote to memory of 1332	4900	cybersec multitool.exe	103
PID 4900 wrote to memory of 1332	4900	cybersec multitool.exe	103
PID 4900 wrote to memory of 1392	4900	cybersec multitool.exe	105
PID 4900 wrote to memory of 1392	4900	cybersec multitool.exe	105
PID 4900 wrote to memory of 752	4900	cybersec multitool.exe	107
PID 4900 wrote to memory of 752	4900	cybersec multitool.exe	107
PID 4900 wrote to memory of 456	4900	cybersec multitool.exe	109
PID 4900 wrote to memory of 456	4900	cybersec multitool.exe	109
PID 4900 wrote to memory of 4672	4900	cybersec multitool.exe	111
PID 4900 wrote to memory of 4672	4900	cybersec multitool.exe	111
PID 4900 wrote to memory of 4192	4900	cybersec multitool.exe	115
PID 4900 wrote to memory of 4192	4900	cybersec multitool.exe	115
PID 4192 wrote to memory of 1592	4192	cmd.exe	117
PID 4192 wrote to memory of 1592	4192	cmd.exe	117

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
4956	attrib.exe

C:\Users\Admin\AppData\Local\Temp\cybersec multitool.exe
"C:\Users\Admin\AppData\Local\Temp\cybersec multitool.exe"
1⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4900
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2480
- C:\Windows\SYSTEM32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\cybersec multitool.exe"
  2⤵
  - Views/modifies file attributes
  PID:4956
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\cybersec multitool.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4332
- 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:3008
- 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:4076
- 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:1916
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1332
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:1392
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:752
- 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:456
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:4672
- C:\Windows\SYSTEM32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\cybersec multitool.exe" && pause
  2⤵
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:4192
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:1592

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
966914e2e771de7a4a57a95b6ecfa8a9

SHA1
7a32282fd51dd032967ed4d9a40cc57e265aeff2

SHA256
98d3c70d7004fa807897317bd6cd3e977b9b6c72d4d2565aca0f9f8b1c315cba

SHA512
dc39c7124a9c7c8d4c7e8e16290c46360b8d9a8f4e43edaacbbeb09bdcf20159a53db54d2b322372001b6a3de52b2f88e9088b5fdbc7638816ae0d122bb015f5

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

Filesize
1KB

MD5
276798eeb29a49dc6e199768bc9c2e71

SHA1
5fdc8ccb897ac2df7476fbb07517aca5b7a6205b

SHA256
cd0a1056e8f1b6cb5cb328532239d802f4e2aa8f8fcdc0fcb487684bd68e0dcc

SHA512
0d34fce64bbefc57d64fa6e03ca886952263d5f24df9c1c4cce6a1e8f5a47a9a21e9820f8d38caa7f7b43a52336ce00b738ea18419aaa7c788b72e04ce19e4f2

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

Filesize
1KB

MD5
7f742b567d79df009b5fb264491b2be8

SHA1
d0c8d22b270328a3612a6e87513ad10531b58af9

SHA256
a6fd77ba54740faa4d017de86f2cafc2db1374db22d902e5ae85e285cb019a5e

SHA512
7e79ecf08c069c1f5a621f4b24915395b7b00a7747d9ab541115c99b318415055ef66ddc5da1e2c4be865548048330dda1edb03ab8a7dcbb51c3ca6949572e69

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_blu1xsdc.tee.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/4332-4-0x00007FFA08120000-0x00007FFA08BE1000-memory.dmp

Filesize
10.8MB

Download
memory/4332-5-0x000001EA74A70000-0x000001EA74A92000-memory.dmp

Filesize
136KB

Download
memory/4332-15-0x00007FFA08120000-0x00007FFA08BE1000-memory.dmp

Filesize
10.8MB

Download
memory/4332-18-0x00007FFA08120000-0x00007FFA08BE1000-memory.dmp

Filesize
10.8MB

Download
memory/4332-3-0x00007FFA08120000-0x00007FFA08BE1000-memory.dmp

Filesize
10.8MB

Download
memory/4900-34-0x000001F89DA00000-0x000001F89DA50000-memory.dmp

Filesize
320KB

Download
memory/4900-33-0x000001F89D980000-0x000001F89D9F6000-memory.dmp

Filesize
472KB

Download
memory/4900-35-0x000001F89DA50000-0x000001F89DA6E000-memory.dmp

Filesize
120KB

Download
memory/4900-1-0x000001F8830A0000-0x000001F883144000-memory.dmp

Filesize
656KB

Download
memory/4900-0-0x00007FFA08123000-0x00007FFA08125000-memory.dmp

Filesize
8KB

Download
memory/4900-72-0x000001F89D900000-0x000001F89D90A000-memory.dmp

Filesize
40KB

Download
memory/4900-73-0x000001F89D930000-0x000001F89D942000-memory.dmp

Filesize
72KB

Download
memory/4900-2-0x00007FFA08120000-0x00007FFA08BE1000-memory.dmp

Filesize
10.8MB

Download
memory/4900-89-0x00007FFA08123000-0x00007FFA08125000-memory.dmp

Filesize
8KB

Download
memory/4900-90-0x00007FFA08120000-0x00007FFA08BE1000-memory.dmp

Filesize
10.8MB

Download
memory/4900-95-0x000001F89D5B0000-0x000001F89D6B2000-memory.dmp

Filesize
1.0MB

Download
memory/4900-96-0x00007FFA08120000-0x00007FFA08BE1000-memory.dmp

Filesize
10.8MB

Download