umbral | 72ee11a905ca278130f02397422b4cc4944851065ce0072f9888b70c5ad40f1e

Analysis

max time kernel
94s
max time network
139s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
06-08-2024 08:26

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General

Target

0x000f000000015c87-15.exe
Size

229KB
MD5

f48ef033300ec9fd3c77afff5c20e95f
SHA1

22d6125b980474b3f54937003a765cdd5352f9a8
SHA256

72ee11a905ca278130f02397422b4cc4944851065ce0072f9888b70c5ad40f1e
SHA512

847ee8cdb14879089c861168d6be90325304df490668a38447b37772423e6dab5e32a5df344ceb58410d3b24cf25cd7221e8768951e5aca14820996a1e8304bc
SSDEEP

6144:lloZM+rIkd8g+EtXHkv/iD4In5D4+ZRSy3q459cApb8e1m1i:noZtL+EP8In5D4+ZRSy3q459cEX

Score

10^/10

umbral credential_access discovery execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral2/memory/3200-1-0x0000025BB6700000-0x0000025BB6740000-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
508	powershell.exe
2616	powershell.exe
2220	powershell.exe
3240	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	0x000f000000015c87-15.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
21	discord.com
22	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

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
5036	cmd.exe
960	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
4076	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
960	PING.EXE

Suspicious behavior: EnumeratesProcesses 11 IoCs

pid	Process
3200	0x000f000000015c87-15.exe
508	powershell.exe
508	powershell.exe
3240	powershell.exe
3240	powershell.exe
2616	powershell.exe
2616	powershell.exe
1860	powershell.exe
1860	powershell.exe
2220	powershell.exe
2220	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	3200	0x000f000000015c87-15.exe
Token: SeIncreaseQuotaPrivilege	1888	wmic.exe
Token: SeSecurityPrivilege	1888	wmic.exe
Token: SeTakeOwnershipPrivilege	1888	wmic.exe
Token: SeLoadDriverPrivilege	1888	wmic.exe
Token: SeSystemProfilePrivilege	1888	wmic.exe
Token: SeSystemtimePrivilege	1888	wmic.exe
Token: SeProfSingleProcessPrivilege	1888	wmic.exe
Token: SeIncBasePriorityPrivilege	1888	wmic.exe
Token: SeCreatePagefilePrivilege	1888	wmic.exe
Token: SeBackupPrivilege	1888	wmic.exe
Token: SeRestorePrivilege	1888	wmic.exe
Token: SeShutdownPrivilege	1888	wmic.exe
Token: SeDebugPrivilege	1888	wmic.exe
Token: SeSystemEnvironmentPrivilege	1888	wmic.exe
Token: SeRemoteShutdownPrivilege	1888	wmic.exe
Token: SeUndockPrivilege	1888	wmic.exe
Token: SeManageVolumePrivilege	1888	wmic.exe
Token: 33	1888	wmic.exe
Token: 34	1888	wmic.exe
Token: 35	1888	wmic.exe
Token: 36	1888	wmic.exe
Token: SeIncreaseQuotaPrivilege	1888	wmic.exe
Token: SeSecurityPrivilege	1888	wmic.exe
Token: SeTakeOwnershipPrivilege	1888	wmic.exe
Token: SeLoadDriverPrivilege	1888	wmic.exe
Token: SeSystemProfilePrivilege	1888	wmic.exe
Token: SeSystemtimePrivilege	1888	wmic.exe
Token: SeProfSingleProcessPrivilege	1888	wmic.exe
Token: SeIncBasePriorityPrivilege	1888	wmic.exe
Token: SeCreatePagefilePrivilege	1888	wmic.exe
Token: SeBackupPrivilege	1888	wmic.exe
Token: SeRestorePrivilege	1888	wmic.exe
Token: SeShutdownPrivilege	1888	wmic.exe
Token: SeDebugPrivilege	1888	wmic.exe
Token: SeSystemEnvironmentPrivilege	1888	wmic.exe
Token: SeRemoteShutdownPrivilege	1888	wmic.exe
Token: SeUndockPrivilege	1888	wmic.exe
Token: SeManageVolumePrivilege	1888	wmic.exe
Token: 33	1888	wmic.exe
Token: 34	1888	wmic.exe
Token: 35	1888	wmic.exe
Token: 36	1888	wmic.exe
Token: SeDebugPrivilege	508	powershell.exe
Token: SeDebugPrivilege	3240	powershell.exe
Token: SeDebugPrivilege	2616	powershell.exe
Token: SeDebugPrivilege	1860	powershell.exe
Token: SeIncreaseQuotaPrivilege	4168	wmic.exe
Token: SeSecurityPrivilege	4168	wmic.exe
Token: SeTakeOwnershipPrivilege	4168	wmic.exe
Token: SeLoadDriverPrivilege	4168	wmic.exe
Token: SeSystemProfilePrivilege	4168	wmic.exe
Token: SeSystemtimePrivilege	4168	wmic.exe
Token: SeProfSingleProcessPrivilege	4168	wmic.exe
Token: SeIncBasePriorityPrivilege	4168	wmic.exe
Token: SeCreatePagefilePrivilege	4168	wmic.exe
Token: SeBackupPrivilege	4168	wmic.exe
Token: SeRestorePrivilege	4168	wmic.exe
Token: SeShutdownPrivilege	4168	wmic.exe
Token: SeDebugPrivilege	4168	wmic.exe
Token: SeSystemEnvironmentPrivilege	4168	wmic.exe
Token: SeRemoteShutdownPrivilege	4168	wmic.exe
Token: SeUndockPrivilege	4168	wmic.exe
Token: SeManageVolumePrivilege	4168	wmic.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 3200 wrote to memory of 1888	3200	0x000f000000015c87-15.exe	85
PID 3200 wrote to memory of 1888	3200	0x000f000000015c87-15.exe	85
PID 3200 wrote to memory of 4596	3200	0x000f000000015c87-15.exe	89
PID 3200 wrote to memory of 4596	3200	0x000f000000015c87-15.exe	89
PID 3200 wrote to memory of 508	3200	0x000f000000015c87-15.exe	91
PID 3200 wrote to memory of 508	3200	0x000f000000015c87-15.exe	91
PID 3200 wrote to memory of 3240	3200	0x000f000000015c87-15.exe	93
PID 3200 wrote to memory of 3240	3200	0x000f000000015c87-15.exe	93
PID 3200 wrote to memory of 2616	3200	0x000f000000015c87-15.exe	95
PID 3200 wrote to memory of 2616	3200	0x000f000000015c87-15.exe	95
PID 3200 wrote to memory of 1860	3200	0x000f000000015c87-15.exe	97
PID 3200 wrote to memory of 1860	3200	0x000f000000015c87-15.exe	97
PID 3200 wrote to memory of 4168	3200	0x000f000000015c87-15.exe	99
PID 3200 wrote to memory of 4168	3200	0x000f000000015c87-15.exe	99
PID 3200 wrote to memory of 4420	3200	0x000f000000015c87-15.exe	101
PID 3200 wrote to memory of 4420	3200	0x000f000000015c87-15.exe	101
PID 3200 wrote to memory of 2372	3200	0x000f000000015c87-15.exe	103
PID 3200 wrote to memory of 2372	3200	0x000f000000015c87-15.exe	103
PID 3200 wrote to memory of 2220	3200	0x000f000000015c87-15.exe	105
PID 3200 wrote to memory of 2220	3200	0x000f000000015c87-15.exe	105
PID 3200 wrote to memory of 4076	3200	0x000f000000015c87-15.exe	107
PID 3200 wrote to memory of 4076	3200	0x000f000000015c87-15.exe	107
PID 3200 wrote to memory of 5036	3200	0x000f000000015c87-15.exe	109
PID 3200 wrote to memory of 5036	3200	0x000f000000015c87-15.exe	109
PID 5036 wrote to memory of 960	5036	cmd.exe	111
PID 5036 wrote to memory of 960	5036	cmd.exe	111

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
4596	attrib.exe

C:\Users\Admin\AppData\Local\Temp\0x000f000000015c87-15.exe
"C:\Users\Admin\AppData\Local\Temp\0x000f000000015c87-15.exe"
1⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3200
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1888
- C:\Windows\SYSTEM32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\0x000f000000015c87-15.exe"
  2⤵
  - Views/modifies file attributes
  PID:4596
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\0x000f000000015c87-15.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:508
- 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:3240
- 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:2616
- 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:1860
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:4168
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:4420
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:2372
- 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:2220
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:4076
- C:\Windows\SYSTEM32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\0x000f000000015c87-15.exe" && pause
  2⤵
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:5036
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:960

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
6d3e9c29fe44e90aae6ed30ccf799ca8

SHA1
c7974ef72264bbdf13a2793ccf1aed11bc565dce

SHA256
2360634e63e8f0b5748e2c56ebb8f4aa78e71008ea7b5c9ca1c49be03b49557d

SHA512
60c38c4367352537545d859f64b9c5cbada94240478d1d039fd27b5ecba4dc1c90051557c16d802269703b873546ead416279c0a80c6fd5e49ad361cef22596a

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

Filesize
948B

MD5
c65738617888921a153bd9b1ef516ee7

SHA1
5245e71ea3c181d76320c857b639272ac9e079b1

SHA256
4640ba4001fd16a593315299cbdd4988dc2c7075820687f1018aac40aca95c26

SHA512
2e2a0ebd93f9d8dd07a7599054bce232683e9add9a35e77b584618040bcfd84a42545352519ec4736cc379002210b6f3ed2d905591c6925c0981b0392b495bfa

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

Filesize
1KB

MD5
548dd08570d121a65e82abb7171cae1c

SHA1
1a1b5084b3a78f3acd0d811cc79dbcac121217ab

SHA256
cdf17b8532ebcebac3cfe23954a30aa32edd268d040da79c82687e4ccb044adc

SHA512
37b98b09178b51eec9599af90d027d2f1028202efc1633047e16e41f1a95610984af5620baac07db085ccfcb96942aafffad17aa1f44f63233e83869dc9f697b

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

Filesize
1KB

MD5
45ad40f012b09e141955482368549640

SHA1
3f9cd15875c1e397c3b2b5592805577ae88a96cb

SHA256
ea3b59172f1a33677f9cb3843fb4d6093b806d3a7cf2f3c6d4692f5421f656ce

SHA512
3de08f8affca1c1450088f560776cf3d65146cadac43c06eb922c7b3cea436e519966cf38458303ffeb1a58c53f8952cffda6c34216fda7594e014b516e83b33

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_odoaq1xw.jxr.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/508-4-0x00007FFD1A740000-0x00007FFD1B201000-memory.dmp

Filesize
10.8MB

Download
memory/508-3-0x0000024659C80000-0x0000024659CA2000-memory.dmp

Filesize
136KB

Download
memory/508-14-0x00007FFD1A740000-0x00007FFD1B201000-memory.dmp

Filesize
10.8MB

Download
memory/508-15-0x00007FFD1A740000-0x00007FFD1B201000-memory.dmp

Filesize
10.8MB

Download
memory/508-18-0x00007FFD1A740000-0x00007FFD1B201000-memory.dmp

Filesize
10.8MB

Download
memory/3200-34-0x0000025BB8420000-0x0000025BB8470000-memory.dmp

Filesize
320KB

Download
memory/3200-33-0x0000025BD0E90000-0x0000025BD0F06000-memory.dmp

Filesize
472KB

Download
memory/3200-35-0x0000025BB6B50000-0x0000025BB6B6E000-memory.dmp

Filesize
120KB

Download
memory/3200-1-0x0000025BB6700000-0x0000025BB6740000-memory.dmp

Filesize
256KB

Download
memory/3200-0-0x00007FFD1A743000-0x00007FFD1A745000-memory.dmp

Filesize
8KB

Download
memory/3200-71-0x0000025BB83E0000-0x0000025BB83EA000-memory.dmp

Filesize
40KB

Download
memory/3200-72-0x0000025BD0F10000-0x0000025BD0F22000-memory.dmp

Filesize
72KB

Download
memory/3200-2-0x00007FFD1A740000-0x00007FFD1B201000-memory.dmp

Filesize
10.8MB

Download
memory/3200-90-0x00007FFD1A740000-0x00007FFD1B201000-memory.dmp

Filesize
10.8MB

Download