umbral | a8c74a05f574514ec74cb942ec0ff1d5380da648e145ba829dec4cc511ec4cd7

Analysis

max time kernel
122s
max time network
123s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
29-08-2024 05:25

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe
Size

229KB
MD5

eabe2a81aa3dabab25e49ee4b36ce075
SHA1

f55b6298f0a8330d90d39e20a73adb2e828dfd1c
SHA256

5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686
SHA512

9688119150d3a466d9a12bfc55933d367104747a2cf319467a78dfcf975361c9e2727f76efe380db9d0c92c39dc4b0241bfb444e965e92720c9edcf42c1d18fe
SSDEEP

6144:lloZM+rIkd8g+EtXHkv/iD4Wn0IZHMgPou35EwFyov28e1mpi:noZtL+EP8Wn0IZHMgPou35EwFm1

Score

10^/10

umbral credential_access discovery execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/1940-1-0x00000000003B0000-0x00000000003F0000-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
2920	powershell.exe
2332	powershell.exe
2592	powershell.exe
2864	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe

Deletes itself 1 IoCs

pid	Process
3052	cmd.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
9	discord.com
10	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
2452	PING.EXE
3052	cmd.exe

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
1584	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2452	PING.EXE

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
1940	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe
2920	powershell.exe
2592	powershell.exe
2864	powershell.exe
2968	powershell.exe
2332	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	1940	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe
Token: SeIncreaseQuotaPrivilege	2796	wmic.exe
Token: SeSecurityPrivilege	2796	wmic.exe
Token: SeTakeOwnershipPrivilege	2796	wmic.exe
Token: SeLoadDriverPrivilege	2796	wmic.exe
Token: SeSystemProfilePrivilege	2796	wmic.exe
Token: SeSystemtimePrivilege	2796	wmic.exe
Token: SeProfSingleProcessPrivilege	2796	wmic.exe
Token: SeIncBasePriorityPrivilege	2796	wmic.exe
Token: SeCreatePagefilePrivilege	2796	wmic.exe
Token: SeBackupPrivilege	2796	wmic.exe
Token: SeRestorePrivilege	2796	wmic.exe
Token: SeShutdownPrivilege	2796	wmic.exe
Token: SeDebugPrivilege	2796	wmic.exe
Token: SeSystemEnvironmentPrivilege	2796	wmic.exe
Token: SeRemoteShutdownPrivilege	2796	wmic.exe
Token: SeUndockPrivilege	2796	wmic.exe
Token: SeManageVolumePrivilege	2796	wmic.exe
Token: 33	2796	wmic.exe
Token: 34	2796	wmic.exe
Token: 35	2796	wmic.exe
Token: SeIncreaseQuotaPrivilege	2796	wmic.exe
Token: SeSecurityPrivilege	2796	wmic.exe
Token: SeTakeOwnershipPrivilege	2796	wmic.exe
Token: SeLoadDriverPrivilege	2796	wmic.exe
Token: SeSystemProfilePrivilege	2796	wmic.exe
Token: SeSystemtimePrivilege	2796	wmic.exe
Token: SeProfSingleProcessPrivilege	2796	wmic.exe
Token: SeIncBasePriorityPrivilege	2796	wmic.exe
Token: SeCreatePagefilePrivilege	2796	wmic.exe
Token: SeBackupPrivilege	2796	wmic.exe
Token: SeRestorePrivilege	2796	wmic.exe
Token: SeShutdownPrivilege	2796	wmic.exe
Token: SeDebugPrivilege	2796	wmic.exe
Token: SeSystemEnvironmentPrivilege	2796	wmic.exe
Token: SeRemoteShutdownPrivilege	2796	wmic.exe
Token: SeUndockPrivilege	2796	wmic.exe
Token: SeManageVolumePrivilege	2796	wmic.exe
Token: 33	2796	wmic.exe
Token: 34	2796	wmic.exe
Token: 35	2796	wmic.exe
Token: SeDebugPrivilege	2920	powershell.exe
Token: SeDebugPrivilege	2592	powershell.exe
Token: SeDebugPrivilege	2864	powershell.exe
Token: SeDebugPrivilege	2968	powershell.exe
Token: SeIncreaseQuotaPrivilege	2828	wmic.exe
Token: SeSecurityPrivilege	2828	wmic.exe
Token: SeTakeOwnershipPrivilege	2828	wmic.exe
Token: SeLoadDriverPrivilege	2828	wmic.exe
Token: SeSystemProfilePrivilege	2828	wmic.exe
Token: SeSystemtimePrivilege	2828	wmic.exe
Token: SeProfSingleProcessPrivilege	2828	wmic.exe
Token: SeIncBasePriorityPrivilege	2828	wmic.exe
Token: SeCreatePagefilePrivilege	2828	wmic.exe
Token: SeBackupPrivilege	2828	wmic.exe
Token: SeRestorePrivilege	2828	wmic.exe
Token: SeShutdownPrivilege	2828	wmic.exe
Token: SeDebugPrivilege	2828	wmic.exe
Token: SeSystemEnvironmentPrivilege	2828	wmic.exe
Token: SeRemoteShutdownPrivilege	2828	wmic.exe
Token: SeUndockPrivilege	2828	wmic.exe
Token: SeManageVolumePrivilege	2828	wmic.exe
Token: 33	2828	wmic.exe
Token: 34	2828	wmic.exe

Suspicious use of WriteProcessMemory 39 IoCs

description	pid	Process	procid_target
PID 1940 wrote to memory of 2796	1940	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	30
PID 1940 wrote to memory of 2796	1940	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	30
PID 1940 wrote to memory of 2796	1940	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	30
PID 1940 wrote to memory of 2612	1940	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	33
PID 1940 wrote to memory of 2612	1940	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	33
PID 1940 wrote to memory of 2612	1940	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	33
PID 1940 wrote to memory of 2920	1940	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	35
PID 1940 wrote to memory of 2920	1940	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	35
PID 1940 wrote to memory of 2920	1940	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	35
PID 1940 wrote to memory of 2592	1940	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	37
PID 1940 wrote to memory of 2592	1940	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	37
PID 1940 wrote to memory of 2592	1940	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	37
PID 1940 wrote to memory of 2864	1940	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	39
PID 1940 wrote to memory of 2864	1940	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	39
PID 1940 wrote to memory of 2864	1940	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	39
PID 1940 wrote to memory of 2968	1940	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	41
PID 1940 wrote to memory of 2968	1940	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	41
PID 1940 wrote to memory of 2968	1940	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	41
PID 1940 wrote to memory of 2828	1940	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	43
PID 1940 wrote to memory of 2828	1940	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	43
PID 1940 wrote to memory of 2828	1940	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	43
PID 1940 wrote to memory of 2816	1940	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	45
PID 1940 wrote to memory of 2816	1940	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	45
PID 1940 wrote to memory of 2816	1940	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	45
PID 1940 wrote to memory of 2232	1940	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	47
PID 1940 wrote to memory of 2232	1940	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	47
PID 1940 wrote to memory of 2232	1940	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	47
PID 1940 wrote to memory of 2332	1940	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	49
PID 1940 wrote to memory of 2332	1940	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	49
PID 1940 wrote to memory of 2332	1940	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	49
PID 1940 wrote to memory of 1584	1940	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	51
PID 1940 wrote to memory of 1584	1940	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	51
PID 1940 wrote to memory of 1584	1940	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	51
PID 1940 wrote to memory of 3052	1940	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	53
PID 1940 wrote to memory of 3052	1940	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	53
PID 1940 wrote to memory of 3052	1940	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	53
PID 3052 wrote to memory of 2452	3052	cmd.exe	55
PID 3052 wrote to memory of 2452	3052	cmd.exe	55
PID 3052 wrote to memory of 2452	3052	cmd.exe	55

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
2612	attrib.exe

C:\Users\Admin\AppData\Local\Temp\5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe
"C:\Users\Admin\AppData\Local\Temp\5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe"
1⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1940
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2796
- C:\Windows\system32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe"
  2⤵
  - Views/modifies file attributes
  PID:2612
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2920
- 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:2592
- 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:2864
- 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:2968
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2828
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:2816
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:2232
- 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:2332
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:1584
- C:\Windows\system32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe" && pause
  2⤵
  - Deletes itself
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:3052
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:2452

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

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms

Filesize
7KB

MD5
8178214779c11159cda73846a59d4292

SHA1
5be8af7264e437b397f84b51fe76cf95ab791ecc

SHA256
365c7744bad37a0dc2fd3a5c65ef4a1bfc6bcc385903375528195bcb7ca6e4ec

SHA512
b923402465b56ac0a11a56cc5c3b050fc89d5429e6651e2f01b6f0441bba5c54af5b2447ae1b1dcfd6787f9aa981f16b3d77cc41a3ccbdb324d3cdd358b015f1

Download Submit
memory/1940-0-0x000007FEF5CF3000-0x000007FEF5CF4000-memory.dmp

Filesize
4KB

Download
memory/1940-1-0x00000000003B0000-0x00000000003F0000-memory.dmp

Filesize
256KB

Download
memory/1940-2-0x000007FEF5CF0000-0x000007FEF66DC000-memory.dmp

Filesize
9.9MB

Download
memory/1940-47-0x000007FEF5CF0000-0x000007FEF66DC000-memory.dmp

Filesize
9.9MB

Download
memory/2332-43-0x0000000002790000-0x0000000002798000-memory.dmp

Filesize
32KB

Download
memory/2592-14-0x000000001B540000-0x000000001B822000-memory.dmp

Filesize
2.9MB

Download
memory/2592-15-0x0000000001D90000-0x0000000001D98000-memory.dmp

Filesize
32KB

Download
memory/2920-7-0x000000001B4D0000-0x000000001B7B2000-memory.dmp

Filesize
2.9MB

Download
memory/2920-8-0x0000000002970000-0x0000000002978000-memory.dmp

Filesize
32KB

Download