umbral | 44806f5e8beab048f45916e5723a475bd20f2684929ec4cc92b1096168a4e32f

Analysis

max time kernel
97s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
15-09-2024 00:29

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General

Target

test.exe
Size

360KB
MD5

d16b4139ed4406bce80daf7f64ea7f76
SHA1

d1380cc067fe320dc16e43ac31208e2ce0d7fd5c
SHA256

44806f5e8beab048f45916e5723a475bd20f2684929ec4cc92b1096168a4e32f
SHA512

cee8211366528d5c5bb821a2c6c53f445b43659e43734ce9cb16a368dcd2d28d5e909c5e489482625ef73daa7b387d939829089c69961b3291a7e741b29a0fa6
SSDEEP

6144:1loZM+rIkd8g+EtXHkv/iD4p9d0mkrHMp9YW3X2B0b8e1mLieq:XoZtL+EP8p9d0mkrHMp9YW3X2iVeq

Score

10^/10

umbral credential_access discovery execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral2/memory/2228-1-0x0000017EA12C0000-0x0000017EA1320000-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
2964	powershell.exe
5904	powershell.exe
4816	powershell.exe
3028	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	test.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
23	discord.com
24	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
2684	cmd.exe
5000	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
924	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
5000	PING.EXE

Suspicious behavior: EnumeratesProcesses 11 IoCs

pid	Process
2228	test.exe
3028	powershell.exe
3028	powershell.exe
2964	powershell.exe
2964	powershell.exe
5904	powershell.exe
5904	powershell.exe
4880	powershell.exe
4880	powershell.exe
4816	powershell.exe
4816	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2228	test.exe
Token: SeIncreaseQuotaPrivilege	3944	wmic.exe
Token: SeSecurityPrivilege	3944	wmic.exe
Token: SeTakeOwnershipPrivilege	3944	wmic.exe
Token: SeLoadDriverPrivilege	3944	wmic.exe
Token: SeSystemProfilePrivilege	3944	wmic.exe
Token: SeSystemtimePrivilege	3944	wmic.exe
Token: SeProfSingleProcessPrivilege	3944	wmic.exe
Token: SeIncBasePriorityPrivilege	3944	wmic.exe
Token: SeCreatePagefilePrivilege	3944	wmic.exe
Token: SeBackupPrivilege	3944	wmic.exe
Token: SeRestorePrivilege	3944	wmic.exe
Token: SeShutdownPrivilege	3944	wmic.exe
Token: SeDebugPrivilege	3944	wmic.exe
Token: SeSystemEnvironmentPrivilege	3944	wmic.exe
Token: SeRemoteShutdownPrivilege	3944	wmic.exe
Token: SeUndockPrivilege	3944	wmic.exe
Token: SeManageVolumePrivilege	3944	wmic.exe
Token: 33	3944	wmic.exe
Token: 34	3944	wmic.exe
Token: 35	3944	wmic.exe
Token: 36	3944	wmic.exe
Token: SeIncreaseQuotaPrivilege	3944	wmic.exe
Token: SeSecurityPrivilege	3944	wmic.exe
Token: SeTakeOwnershipPrivilege	3944	wmic.exe
Token: SeLoadDriverPrivilege	3944	wmic.exe
Token: SeSystemProfilePrivilege	3944	wmic.exe
Token: SeSystemtimePrivilege	3944	wmic.exe
Token: SeProfSingleProcessPrivilege	3944	wmic.exe
Token: SeIncBasePriorityPrivilege	3944	wmic.exe
Token: SeCreatePagefilePrivilege	3944	wmic.exe
Token: SeBackupPrivilege	3944	wmic.exe
Token: SeRestorePrivilege	3944	wmic.exe
Token: SeShutdownPrivilege	3944	wmic.exe
Token: SeDebugPrivilege	3944	wmic.exe
Token: SeSystemEnvironmentPrivilege	3944	wmic.exe
Token: SeRemoteShutdownPrivilege	3944	wmic.exe
Token: SeUndockPrivilege	3944	wmic.exe
Token: SeManageVolumePrivilege	3944	wmic.exe
Token: 33	3944	wmic.exe
Token: 34	3944	wmic.exe
Token: 35	3944	wmic.exe
Token: 36	3944	wmic.exe
Token: SeDebugPrivilege	3028	powershell.exe
Token: SeDebugPrivilege	2964	powershell.exe
Token: SeDebugPrivilege	5904	powershell.exe
Token: SeDebugPrivilege	4880	powershell.exe
Token: SeIncreaseQuotaPrivilege	5232	wmic.exe
Token: SeSecurityPrivilege	5232	wmic.exe
Token: SeTakeOwnershipPrivilege	5232	wmic.exe
Token: SeLoadDriverPrivilege	5232	wmic.exe
Token: SeSystemProfilePrivilege	5232	wmic.exe
Token: SeSystemtimePrivilege	5232	wmic.exe
Token: SeProfSingleProcessPrivilege	5232	wmic.exe
Token: SeIncBasePriorityPrivilege	5232	wmic.exe
Token: SeCreatePagefilePrivilege	5232	wmic.exe
Token: SeBackupPrivilege	5232	wmic.exe
Token: SeRestorePrivilege	5232	wmic.exe
Token: SeShutdownPrivilege	5232	wmic.exe
Token: SeDebugPrivilege	5232	wmic.exe
Token: SeSystemEnvironmentPrivilege	5232	wmic.exe
Token: SeRemoteShutdownPrivilege	5232	wmic.exe
Token: SeUndockPrivilege	5232	wmic.exe
Token: SeManageVolumePrivilege	5232	wmic.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 2228 wrote to memory of 3944	2228	test.exe	86
PID 2228 wrote to memory of 3944	2228	test.exe	86
PID 2228 wrote to memory of 2192	2228	test.exe	89
PID 2228 wrote to memory of 2192	2228	test.exe	89
PID 2228 wrote to memory of 3028	2228	test.exe	91
PID 2228 wrote to memory of 3028	2228	test.exe	91
PID 2228 wrote to memory of 2964	2228	test.exe	93
PID 2228 wrote to memory of 2964	2228	test.exe	93
PID 2228 wrote to memory of 5904	2228	test.exe	95
PID 2228 wrote to memory of 5904	2228	test.exe	95
PID 2228 wrote to memory of 4880	2228	test.exe	97
PID 2228 wrote to memory of 4880	2228	test.exe	97
PID 2228 wrote to memory of 5232	2228	test.exe	99
PID 2228 wrote to memory of 5232	2228	test.exe	99
PID 2228 wrote to memory of 1292	2228	test.exe	101
PID 2228 wrote to memory of 1292	2228	test.exe	101
PID 2228 wrote to memory of 5544	2228	test.exe	105
PID 2228 wrote to memory of 5544	2228	test.exe	105
PID 2228 wrote to memory of 4816	2228	test.exe	107
PID 2228 wrote to memory of 4816	2228	test.exe	107
PID 2228 wrote to memory of 924	2228	test.exe	109
PID 2228 wrote to memory of 924	2228	test.exe	109
PID 2228 wrote to memory of 2684	2228	test.exe	112
PID 2228 wrote to memory of 2684	2228	test.exe	112
PID 2684 wrote to memory of 5000	2684	cmd.exe	114
PID 2684 wrote to memory of 5000	2684	cmd.exe	114

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
2192	attrib.exe

C:\Users\Admin\AppData\Local\Temp\test.exe
"C:\Users\Admin\AppData\Local\Temp\test.exe"
1⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2228
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:3944
- C:\Windows\SYSTEM32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\test.exe"
  2⤵
  - Views/modifies file attributes
  PID:2192
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\test.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3028
- 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:2964
- 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:5904
- 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:4880
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:5232
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:1292
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:5544
- 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:4816
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:924
- C:\Windows\SYSTEM32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\test.exe" && pause
  2⤵
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:2684
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:5000

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
440cb38dbee06645cc8b74d51f6e5f71

SHA1
d7e61da91dc4502e9ae83281b88c1e48584edb7c

SHA256
8ef7a682dfd99ff5b7e9de0e1be43f0016d68695a43c33c028af2635cc15ecfe

SHA512
3aab19578535e6ba0f6beb5690c87d970292100704209d2dcebddcdd46c6bead27588ef5d98729bfd50606a54cc1edf608b3d15bef42c13b9982aaaf15de7fd6

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

Filesize
944B

MD5
359d1e37a264703c99ebd01eed362de5

SHA1
a1122c8bf9848b3371cd191ba540864204d1d845

SHA256
5781f3046b0d978469415a059cf5ceae0e532869e69ab1dffb8ed878bd299b07

SHA512
ce3caa1d2205be8167b7cd48ebf538a9ce8c148643c26a20377894aa15cf00f90b2b5e2ebf35d40a0273c088abc11fe6f010e34691d7fbc4bef8d7e482f5087d

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

Filesize
948B

MD5
5824a6037c081fda5d46de274b6e2799

SHA1
526367a09300cbde430e8fb44e41cbe7a0937aac

SHA256
4d610d9cd32a20279c7133a726ff61820d6930e5aa18253ee1422f3a6f54953f

SHA512
a109b150f730cda78d5bee106bd232f9dca7500dfb7899c6919de2bd542e345ca271aa11809a24ea0a27dca158067ab3a2d5688ac0a2325185143245f1665582

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
ec79fae4e7c09310ebf4f2d85a33a638

SHA1
f2bdd995b12e65e7ed437d228f22223b59e76efb

SHA256
e9c4723a5fe34e081c3d2f548a1d472394cc7aa58056fcf44ca542061381243a

SHA512
af9dda12f6bb388d826fe03a4a8beed9bda23a978aa55a2af6a43271660ee896a7ee3bcf2c4d2f1e6180902791d8c23560f1c2ec097a501d8c6f4f6c49075625

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_sg1yvfuv.l0x.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/2228-72-0x0000017EA3130000-0x0000017EA3142000-memory.dmp

Filesize
72KB

Download
memory/2228-35-0x0000017EA30F0000-0x0000017EA310E000-memory.dmp

Filesize
120KB

Download
memory/2228-90-0x00007FF899560000-0x00007FF89A021000-memory.dmp

Filesize
10.8MB

Download
memory/2228-71-0x0000017EA1960000-0x0000017EA196A000-memory.dmp

Filesize
40KB

Download
memory/2228-2-0x00007FF899560000-0x00007FF89A021000-memory.dmp

Filesize
10.8MB

Download
memory/2228-33-0x0000017EA32A0000-0x0000017EA3316000-memory.dmp

Filesize
472KB

Download
memory/2228-34-0x0000017EA30A0000-0x0000017EA30F0000-memory.dmp

Filesize
320KB

Download
memory/2228-0-0x00007FF899563000-0x00007FF899565000-memory.dmp

Filesize
8KB

Download
memory/2228-1-0x0000017EA12C0000-0x0000017EA1320000-memory.dmp

Filesize
384KB

Download
memory/3028-15-0x00000252FA710000-0x00000252FA732000-memory.dmp

Filesize
136KB

Download
memory/3028-4-0x00007FF899560000-0x00007FF89A021000-memory.dmp

Filesize
10.8MB

Download
memory/3028-3-0x00007FF899560000-0x00007FF89A021000-memory.dmp

Filesize
10.8MB

Download
memory/3028-14-0x00007FF899560000-0x00007FF89A021000-memory.dmp

Filesize
10.8MB

Download
memory/3028-18-0x00007FF899560000-0x00007FF89A021000-memory.dmp

Filesize
10.8MB

Download