umbral | 435a2c3b87a6d4e96690d2aae112660823dc52740222c85a80e5f01e9910ee92

Analysis

max time kernel
121s
max time network
121s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
19-09-2024 02:17

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General

Target

435a2c3b87a6d4e96690d2aae112660823dc52740222c85a80e5f01e9910ee92.exe
Size

231KB
MD5

3b915b9bbc5ddf429f85bf939febe424
SHA1

2278baaf3764a27bc962de75601f4d49b2191592
SHA256

435a2c3b87a6d4e96690d2aae112660823dc52740222c85a80e5f01e9910ee92
SHA512

d83341bf784bed732bf120299824ea066f66f505b6dd0fb0b84396af34877a1ba0c483c805835179be2463dd34503b31260035e78f47ca1396305f60f2be50ed
SSDEEP

6144:xloZM+rIkd8g+EtXHkv/iD4LmfzMOsTPkPFQu//OPub8e1mt6i:DoZtL+EP8LwzMOsTPkPFQu//OKO/

Score

10^/10

umbral credential_access discovery execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/2972-1-0x0000000001090000-0x00000000010D0000-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
2884	powershell.exe
2700	powershell.exe
2580	powershell.exe
632	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	435a2c3b87a6d4e96690d2aae112660823dc52740222c85a80e5f01e9910ee92.exe

Deletes itself 1 IoCs

pid	Process
2332	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
1708	PING.EXE
2332	cmd.exe

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
2212	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
1708	PING.EXE

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2972	435a2c3b87a6d4e96690d2aae112660823dc52740222c85a80e5f01e9910ee92.exe
2884	powershell.exe
2700	powershell.exe
2580	powershell.exe
1832	powershell.exe
632	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2972	435a2c3b87a6d4e96690d2aae112660823dc52740222c85a80e5f01e9910ee92.exe
Token: SeIncreaseQuotaPrivilege	2916	wmic.exe
Token: SeSecurityPrivilege	2916	wmic.exe
Token: SeTakeOwnershipPrivilege	2916	wmic.exe
Token: SeLoadDriverPrivilege	2916	wmic.exe
Token: SeSystemProfilePrivilege	2916	wmic.exe
Token: SeSystemtimePrivilege	2916	wmic.exe
Token: SeProfSingleProcessPrivilege	2916	wmic.exe
Token: SeIncBasePriorityPrivilege	2916	wmic.exe
Token: SeCreatePagefilePrivilege	2916	wmic.exe
Token: SeBackupPrivilege	2916	wmic.exe
Token: SeRestorePrivilege	2916	wmic.exe
Token: SeShutdownPrivilege	2916	wmic.exe
Token: SeDebugPrivilege	2916	wmic.exe
Token: SeSystemEnvironmentPrivilege	2916	wmic.exe
Token: SeRemoteShutdownPrivilege	2916	wmic.exe
Token: SeUndockPrivilege	2916	wmic.exe
Token: SeManageVolumePrivilege	2916	wmic.exe
Token: 33	2916	wmic.exe
Token: 34	2916	wmic.exe
Token: 35	2916	wmic.exe
Token: SeIncreaseQuotaPrivilege	2916	wmic.exe
Token: SeSecurityPrivilege	2916	wmic.exe
Token: SeTakeOwnershipPrivilege	2916	wmic.exe
Token: SeLoadDriverPrivilege	2916	wmic.exe
Token: SeSystemProfilePrivilege	2916	wmic.exe
Token: SeSystemtimePrivilege	2916	wmic.exe
Token: SeProfSingleProcessPrivilege	2916	wmic.exe
Token: SeIncBasePriorityPrivilege	2916	wmic.exe
Token: SeCreatePagefilePrivilege	2916	wmic.exe
Token: SeBackupPrivilege	2916	wmic.exe
Token: SeRestorePrivilege	2916	wmic.exe
Token: SeShutdownPrivilege	2916	wmic.exe
Token: SeDebugPrivilege	2916	wmic.exe
Token: SeSystemEnvironmentPrivilege	2916	wmic.exe
Token: SeRemoteShutdownPrivilege	2916	wmic.exe
Token: SeUndockPrivilege	2916	wmic.exe
Token: SeManageVolumePrivilege	2916	wmic.exe
Token: 33	2916	wmic.exe
Token: 34	2916	wmic.exe
Token: 35	2916	wmic.exe
Token: SeDebugPrivilege	2884	powershell.exe
Token: SeDebugPrivilege	2700	powershell.exe
Token: SeDebugPrivilege	2580	powershell.exe
Token: SeDebugPrivilege	1832	powershell.exe
Token: SeIncreaseQuotaPrivilege	284	wmic.exe
Token: SeSecurityPrivilege	284	wmic.exe
Token: SeTakeOwnershipPrivilege	284	wmic.exe
Token: SeLoadDriverPrivilege	284	wmic.exe
Token: SeSystemProfilePrivilege	284	wmic.exe
Token: SeSystemtimePrivilege	284	wmic.exe
Token: SeProfSingleProcessPrivilege	284	wmic.exe
Token: SeIncBasePriorityPrivilege	284	wmic.exe
Token: SeCreatePagefilePrivilege	284	wmic.exe
Token: SeBackupPrivilege	284	wmic.exe
Token: SeRestorePrivilege	284	wmic.exe
Token: SeShutdownPrivilege	284	wmic.exe
Token: SeDebugPrivilege	284	wmic.exe
Token: SeSystemEnvironmentPrivilege	284	wmic.exe
Token: SeRemoteShutdownPrivilege	284	wmic.exe
Token: SeUndockPrivilege	284	wmic.exe
Token: SeManageVolumePrivilege	284	wmic.exe
Token: 33	284	wmic.exe
Token: 34	284	wmic.exe

Suspicious use of WriteProcessMemory 39 IoCs

description	pid	Process	procid_target
PID 2972 wrote to memory of 2916	2972	435a2c3b87a6d4e96690d2aae112660823dc52740222c85a80e5f01e9910ee92.exe	30
PID 2972 wrote to memory of 2916	2972	435a2c3b87a6d4e96690d2aae112660823dc52740222c85a80e5f01e9910ee92.exe	30
PID 2972 wrote to memory of 2916	2972	435a2c3b87a6d4e96690d2aae112660823dc52740222c85a80e5f01e9910ee92.exe	30
PID 2972 wrote to memory of 2832	2972	435a2c3b87a6d4e96690d2aae112660823dc52740222c85a80e5f01e9910ee92.exe	33
PID 2972 wrote to memory of 2832	2972	435a2c3b87a6d4e96690d2aae112660823dc52740222c85a80e5f01e9910ee92.exe	33
PID 2972 wrote to memory of 2832	2972	435a2c3b87a6d4e96690d2aae112660823dc52740222c85a80e5f01e9910ee92.exe	33
PID 2972 wrote to memory of 2884	2972	435a2c3b87a6d4e96690d2aae112660823dc52740222c85a80e5f01e9910ee92.exe	35
PID 2972 wrote to memory of 2884	2972	435a2c3b87a6d4e96690d2aae112660823dc52740222c85a80e5f01e9910ee92.exe	35
PID 2972 wrote to memory of 2884	2972	435a2c3b87a6d4e96690d2aae112660823dc52740222c85a80e5f01e9910ee92.exe	35
PID 2972 wrote to memory of 2700	2972	435a2c3b87a6d4e96690d2aae112660823dc52740222c85a80e5f01e9910ee92.exe	37
PID 2972 wrote to memory of 2700	2972	435a2c3b87a6d4e96690d2aae112660823dc52740222c85a80e5f01e9910ee92.exe	37
PID 2972 wrote to memory of 2700	2972	435a2c3b87a6d4e96690d2aae112660823dc52740222c85a80e5f01e9910ee92.exe	37
PID 2972 wrote to memory of 2580	2972	435a2c3b87a6d4e96690d2aae112660823dc52740222c85a80e5f01e9910ee92.exe	39
PID 2972 wrote to memory of 2580	2972	435a2c3b87a6d4e96690d2aae112660823dc52740222c85a80e5f01e9910ee92.exe	39
PID 2972 wrote to memory of 2580	2972	435a2c3b87a6d4e96690d2aae112660823dc52740222c85a80e5f01e9910ee92.exe	39
PID 2972 wrote to memory of 1832	2972	435a2c3b87a6d4e96690d2aae112660823dc52740222c85a80e5f01e9910ee92.exe	41
PID 2972 wrote to memory of 1832	2972	435a2c3b87a6d4e96690d2aae112660823dc52740222c85a80e5f01e9910ee92.exe	41
PID 2972 wrote to memory of 1832	2972	435a2c3b87a6d4e96690d2aae112660823dc52740222c85a80e5f01e9910ee92.exe	41
PID 2972 wrote to memory of 284	2972	435a2c3b87a6d4e96690d2aae112660823dc52740222c85a80e5f01e9910ee92.exe	43
PID 2972 wrote to memory of 284	2972	435a2c3b87a6d4e96690d2aae112660823dc52740222c85a80e5f01e9910ee92.exe	43
PID 2972 wrote to memory of 284	2972	435a2c3b87a6d4e96690d2aae112660823dc52740222c85a80e5f01e9910ee92.exe	43
PID 2972 wrote to memory of 844	2972	435a2c3b87a6d4e96690d2aae112660823dc52740222c85a80e5f01e9910ee92.exe	45
PID 2972 wrote to memory of 844	2972	435a2c3b87a6d4e96690d2aae112660823dc52740222c85a80e5f01e9910ee92.exe	45
PID 2972 wrote to memory of 844	2972	435a2c3b87a6d4e96690d2aae112660823dc52740222c85a80e5f01e9910ee92.exe	45
PID 2972 wrote to memory of 1940	2972	435a2c3b87a6d4e96690d2aae112660823dc52740222c85a80e5f01e9910ee92.exe	47
PID 2972 wrote to memory of 1940	2972	435a2c3b87a6d4e96690d2aae112660823dc52740222c85a80e5f01e9910ee92.exe	47
PID 2972 wrote to memory of 1940	2972	435a2c3b87a6d4e96690d2aae112660823dc52740222c85a80e5f01e9910ee92.exe	47
PID 2972 wrote to memory of 632	2972	435a2c3b87a6d4e96690d2aae112660823dc52740222c85a80e5f01e9910ee92.exe	49
PID 2972 wrote to memory of 632	2972	435a2c3b87a6d4e96690d2aae112660823dc52740222c85a80e5f01e9910ee92.exe	49
PID 2972 wrote to memory of 632	2972	435a2c3b87a6d4e96690d2aae112660823dc52740222c85a80e5f01e9910ee92.exe	49
PID 2972 wrote to memory of 2212	2972	435a2c3b87a6d4e96690d2aae112660823dc52740222c85a80e5f01e9910ee92.exe	51
PID 2972 wrote to memory of 2212	2972	435a2c3b87a6d4e96690d2aae112660823dc52740222c85a80e5f01e9910ee92.exe	51
PID 2972 wrote to memory of 2212	2972	435a2c3b87a6d4e96690d2aae112660823dc52740222c85a80e5f01e9910ee92.exe	51
PID 2972 wrote to memory of 2332	2972	435a2c3b87a6d4e96690d2aae112660823dc52740222c85a80e5f01e9910ee92.exe	53
PID 2972 wrote to memory of 2332	2972	435a2c3b87a6d4e96690d2aae112660823dc52740222c85a80e5f01e9910ee92.exe	53
PID 2972 wrote to memory of 2332	2972	435a2c3b87a6d4e96690d2aae112660823dc52740222c85a80e5f01e9910ee92.exe	53
PID 2332 wrote to memory of 1708	2332	cmd.exe	55
PID 2332 wrote to memory of 1708	2332	cmd.exe	55
PID 2332 wrote to memory of 1708	2332	cmd.exe	55

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
2832	attrib.exe

C:\Users\Admin\AppData\Local\Temp\435a2c3b87a6d4e96690d2aae112660823dc52740222c85a80e5f01e9910ee92.exe
"C:\Users\Admin\AppData\Local\Temp\435a2c3b87a6d4e96690d2aae112660823dc52740222c85a80e5f01e9910ee92.exe"
1⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2972
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2916
- C:\Windows\system32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\435a2c3b87a6d4e96690d2aae112660823dc52740222c85a80e5f01e9910ee92.exe"
  2⤵
  - Views/modifies file attributes
  PID:2832
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\435a2c3b87a6d4e96690d2aae112660823dc52740222c85a80e5f01e9910ee92.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2884
- 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:2700
- 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:2580
- 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:1832
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:284
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:844
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:1940
- 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:632
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:2212
- C:\Windows\system32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\435a2c3b87a6d4e96690d2aae112660823dc52740222c85a80e5f01e9910ee92.exe" && pause
  2⤵
  - Deletes itself
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:2332
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:1708

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\Roaming\Microsoft\Windows\Recent\CustomDestinations\2PARRU1QV0MMU5IWNME3.temp

Filesize
7KB

MD5
053ec2b9d68a75d72964e81a622e83ee

SHA1
ab6caca79bbb994a4045f09f7ce5c481fa37420c

SHA256
0d1e7e7a6e36ae17dfaae08aa07b0760ccd9ae85ca0e9db27b98a1a6ee09f7e3

SHA512
146959bf7a2fa8b743d7791252b63947ec2bebb0ee287f2da2fd44c24901be761e9d72c1d77ef80e97670a638b14d69f5f84cf5c98819df3efd1bd5909986d35

Download Submit
memory/632-44-0x0000000002810000-0x0000000002818000-memory.dmp

Filesize
32KB

Download
memory/2700-14-0x000000001B5E0000-0x000000001B8C2000-memory.dmp

Filesize
2.9MB

Download
memory/2700-15-0x0000000001D90000-0x0000000001D98000-memory.dmp

Filesize
32KB

Download
memory/2884-7-0x000000001B820000-0x000000001BB02000-memory.dmp

Filesize
2.9MB

Download
memory/2884-8-0x0000000001F00000-0x0000000001F08000-memory.dmp

Filesize
32KB

Download
memory/2972-0-0x000007FEF5D13000-0x000007FEF5D14000-memory.dmp

Filesize
4KB

Download
memory/2972-1-0x0000000001090000-0x00000000010D0000-memory.dmp

Filesize
256KB

Download
memory/2972-2-0x000007FEF5D10000-0x000007FEF66FC000-memory.dmp

Filesize
9.9MB

Download
memory/2972-48-0x000007FEF5D10000-0x000007FEF66FC000-memory.dmp

Filesize
9.9MB

Download