umbral | e1663465701c284caff2ef4acd4649efb4aae0b9d935da69766dca2c019bcd0f

Analysis

max time kernel
93s
max time network
99s
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, 16:11

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General

Target
file_out.exe
Size 214KB
Sample240806-tm21lstdjr
SHA256 e1663465701c284caff2ef4acd4649efb4aae0b9d935da69766dca2c019bcd0f
MD5 a23841ed39cc3b09d4e731a80e2d70a6
SHA1 89f95246610063d67db46554f9d4ac61b8c45e02
SHA512 1a6c9478beccf81c1371bb59a7c7854d7f19481747705419e5816e42271b526469c74e06b66910514cc5385a69819cc86016ede8b0ccd970976ac59d52afffa5
SSDEEP 3072:1lP/chtWkOIGSSvDvPnsUSCpjli8vRXfOZ44lllllj0em1Sl8eN7bqXBptXT5j/:bcyHIGNsUSUBvRty8eNH8pR
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

umbral credential_access execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral2/memory/2120-0-0x000001C9C2F70000-0x000001C9C2FAC000-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
2648	powershell.exe
4420	powershell.exe
4504	powershell.exe
4312	powershell.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
23	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
19	ip-api.com

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
804	wmic.exe

Suspicious behavior: EnumeratesProcesses 10 IoCs

pid	Process
2648	powershell.exe
2648	powershell.exe
4312	powershell.exe
4312	powershell.exe
4420	powershell.exe
4420	powershell.exe
1208	powershell.exe
1208	powershell.exe
4504	powershell.exe
4504	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2120	file_out.exe
Token: SeDebugPrivilege	2648	powershell.exe
Token: SeDebugPrivilege	4312	powershell.exe
Token: SeDebugPrivilege	4420	powershell.exe
Token: SeDebugPrivilege	1208	powershell.exe
Token: SeIncreaseQuotaPrivilege	388	wmic.exe
Token: SeSecurityPrivilege	388	wmic.exe
Token: SeTakeOwnershipPrivilege	388	wmic.exe
Token: SeLoadDriverPrivilege	388	wmic.exe
Token: SeSystemProfilePrivilege	388	wmic.exe
Token: SeSystemtimePrivilege	388	wmic.exe
Token: SeProfSingleProcessPrivilege	388	wmic.exe
Token: SeIncBasePriorityPrivilege	388	wmic.exe
Token: SeCreatePagefilePrivilege	388	wmic.exe
Token: SeBackupPrivilege	388	wmic.exe
Token: SeRestorePrivilege	388	wmic.exe
Token: SeShutdownPrivilege	388	wmic.exe
Token: SeDebugPrivilege	388	wmic.exe
Token: SeSystemEnvironmentPrivilege	388	wmic.exe
Token: SeRemoteShutdownPrivilege	388	wmic.exe
Token: SeUndockPrivilege	388	wmic.exe
Token: SeManageVolumePrivilege	388	wmic.exe
Token: 33	388	wmic.exe
Token: 34	388	wmic.exe
Token: 35	388	wmic.exe
Token: 36	388	wmic.exe
Token: SeIncreaseQuotaPrivilege	388	wmic.exe
Token: SeSecurityPrivilege	388	wmic.exe
Token: SeTakeOwnershipPrivilege	388	wmic.exe
Token: SeLoadDriverPrivilege	388	wmic.exe
Token: SeSystemProfilePrivilege	388	wmic.exe
Token: SeSystemtimePrivilege	388	wmic.exe
Token: SeProfSingleProcessPrivilege	388	wmic.exe
Token: SeIncBasePriorityPrivilege	388	wmic.exe
Token: SeCreatePagefilePrivilege	388	wmic.exe
Token: SeBackupPrivilege	388	wmic.exe
Token: SeRestorePrivilege	388	wmic.exe
Token: SeShutdownPrivilege	388	wmic.exe
Token: SeDebugPrivilege	388	wmic.exe
Token: SeSystemEnvironmentPrivilege	388	wmic.exe
Token: SeRemoteShutdownPrivilege	388	wmic.exe
Token: SeUndockPrivilege	388	wmic.exe
Token: SeManageVolumePrivilege	388	wmic.exe
Token: 33	388	wmic.exe
Token: 34	388	wmic.exe
Token: 35	388	wmic.exe
Token: 36	388	wmic.exe
Token: SeIncreaseQuotaPrivilege	1488	wmic.exe
Token: SeSecurityPrivilege	1488	wmic.exe
Token: SeTakeOwnershipPrivilege	1488	wmic.exe
Token: SeLoadDriverPrivilege	1488	wmic.exe
Token: SeSystemProfilePrivilege	1488	wmic.exe
Token: SeSystemtimePrivilege	1488	wmic.exe
Token: SeProfSingleProcessPrivilege	1488	wmic.exe
Token: SeIncBasePriorityPrivilege	1488	wmic.exe
Token: SeCreatePagefilePrivilege	1488	wmic.exe
Token: SeBackupPrivilege	1488	wmic.exe
Token: SeRestorePrivilege	1488	wmic.exe
Token: SeShutdownPrivilege	1488	wmic.exe
Token: SeDebugPrivilege	1488	wmic.exe
Token: SeSystemEnvironmentPrivilege	1488	wmic.exe
Token: SeRemoteShutdownPrivilege	1488	wmic.exe
Token: SeUndockPrivilege	1488	wmic.exe
Token: SeManageVolumePrivilege	1488	wmic.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 2120 wrote to memory of 2648	2120	file_out.exe	85
PID 2120 wrote to memory of 2648	2120	file_out.exe	85
PID 2120 wrote to memory of 4312	2120	file_out.exe	88
PID 2120 wrote to memory of 4312	2120	file_out.exe	88
PID 2120 wrote to memory of 4420	2120	file_out.exe	90
PID 2120 wrote to memory of 4420	2120	file_out.exe	90
PID 2120 wrote to memory of 1208	2120	file_out.exe	92
PID 2120 wrote to memory of 1208	2120	file_out.exe	92
PID 2120 wrote to memory of 388	2120	file_out.exe	94
PID 2120 wrote to memory of 388	2120	file_out.exe	94
PID 2120 wrote to memory of 1488	2120	file_out.exe	97
PID 2120 wrote to memory of 1488	2120	file_out.exe	97
PID 2120 wrote to memory of 4036	2120	file_out.exe	99
PID 2120 wrote to memory of 4036	2120	file_out.exe	99
PID 2120 wrote to memory of 4504	2120	file_out.exe	101
PID 2120 wrote to memory of 4504	2120	file_out.exe	101
PID 2120 wrote to memory of 804	2120	file_out.exe	103
PID 2120 wrote to memory of 804	2120	file_out.exe	103

C:\Users\Admin\AppData\Local\Temp\file_out.exe
"C:\Users\Admin\AppData\Local\Temp\file_out.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2120
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\file_out.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2648
- 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:4312
- 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:4420
- 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:1208
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:388
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1488
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:4036
- 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:4504
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:804

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

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

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

powershell.exe.log

Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log
Size 2KB
SHA256 84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f
MD5 d85ba6ff808d9e5444a4b369f5bc2730
SHA1 31aa9d96590fff6981b315e0b391b575e4c0804a
SHA512 8c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249
MD5 SHA1 SHA512

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StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 944B
SHA256 f97ff12a8abf4bf88bb6497bd2ac2da12628c8847a8ba5a9026bdbb76507cdfb
MD5 77d622bb1a5b250869a3238b9bc1402b
SHA1 d47f4003c2554b9dfc4c16f22460b331886b191b
SHA512 d6789b5499f23c9035375a102271e17a8a82e57d6f5312fa24242e08a83efdeb8becb7622f55c4cf1b89c7d864b445df11f4d994cf7e2f87a900535bcca12fd9
MD5 SHA1 SHA512

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StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 948B
SHA256 60c64f6803d7ad1408d0a8628100470859b16ef332d5f1bd8bb2debe51251d04
MD5 74a6b79d36b4aae8b027a218bc6e1af7
SHA1 0350e46c1df6934903c4820a00b0bc4721779e5f
SHA512 60e71435a9a23f4c144d641844f4182ddc9aa4ccd3e99232149a187112dce96458aab9587e9fea46f5dc5a52f5ca758969a04657a2b5b10241d3e4554f7c85e0
MD5 SHA1 SHA512

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StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 1KB
SHA256 cd0a1056e8f1b6cb5cb328532239d802f4e2aa8f8fcdc0fcb487684bd68e0dcc
MD5 276798eeb29a49dc6e199768bc9c2e71
SHA1 5fdc8ccb897ac2df7476fbb07517aca5b7a6205b
SHA512 0d34fce64bbefc57d64fa6e03ca886952263d5f24df9c1c4cce6a1e8f5a47a9a21e9820f8d38caa7f7b43a52336ce00b738ea18419aaa7c788b72e04ce19e4f2
MD5 SHA1 SHA512

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StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 1KB
SHA256 ea3b59172f1a33677f9cb3843fb4d6093b806d3a7cf2f3c6d4692f5421f656ce
MD5 45ad40f012b09e141955482368549640
SHA1 3f9cd15875c1e397c3b2b5592805577ae88a96cb
SHA512 3de08f8affca1c1450088f560776cf3d65146cadac43c06eb922c7b3cea436e519966cf38458303ffeb1a58c53f8952cffda6c34216fda7594e014b516e83b33
MD5 SHA1 SHA512

Submit Download

__PSScriptPolicyTest_e45ee5em.nzl.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_e45ee5em.nzl.ps1
Size 60B
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
MD5 SHA1 SHA512

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memory/2120-69-0x000001C9C4D00000-0x000001C9C4D0A000-memory.dmp

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memory/2120-33-0x000001C9DD790000-0x000001C9DD7AE000-memory.dmp

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memory/2120-89-0x00007FFD06410000-0x00007FFD06ED1000-memory.dmp

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memory/2120-88-0x000001C9DD860000-0x000001C9DDA09000-memory.dmp

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memory/2120-2-0x00007FFD06410000-0x00007FFD06ED1000-memory.dmp

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memory/2120-31-0x000001C9DD690000-0x000001C9DD706000-memory.dmp

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memory/2120-32-0x000001C9C4D10000-0x000001C9C4D60000-memory.dmp

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memory/2120-70-0x000001C9DD730000-0x000001C9DD742000-memory.dmp

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memory/2120-1-0x00007FFD06413000-0x00007FFD06415000-memory.dmp

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memory/2120-0-0x000001C9C2F70000-0x000001C9C2FAC000-memory.dmp

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memory/2648-9-0x0000021B7AF40000-0x0000021B7AF62000-memory.dmp

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memory/2648-15-0x00007FFD06410000-0x00007FFD06ED1000-memory.dmp

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memory/2648-13-0x00007FFD06410000-0x00007FFD06ED1000-memory.dmp

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memory/2648-14-0x00007FFD06410000-0x00007FFD06ED1000-memory.dmp

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memory/2648-18-0x00007FFD06410000-0x00007FFD06ED1000-memory.dmp

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