umbral | 6c37b3d7cba096ed83d54a1c31ca265f79567e4b4b9339d1f07b18b5013182d3

Analysis

max time kernel
93s
max time network
104s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
27-06-2024 20:36

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General

Target

Launcher.exe
Size

495KB
MD5

398b7fccfa2d8fd240a5032a20e57200
SHA1

2e9bb06c985765930abd4d8e4734d48fc9db476b
SHA256

6c37b3d7cba096ed83d54a1c31ca265f79567e4b4b9339d1f07b18b5013182d3
SHA512

aef4ca14b00598603aab35dbb3f02a264007d3f14533c59fc6e5040f138f19c2d414de6fa62860ea91e5b80d8e57e2297c30bbc837a0bf15490a758d80ba4c4c
SSDEEP

12288:9oZtL+EP8jM1jfVeGJCMFXSy3l7JDhA/Nfg:LI8w1jfVeGJCMFXSy3l9lA/Nfg

Score

10^/10

umbral execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/2816-0-0x000001DE1DBB0000-0x000001DE1DC32000-memory.dmp	family_umbral

Umbral
Umbral stealer is an opensource moduler stealer written in C#.
stealer umbral

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
4496	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	Launcher.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
7	ip-api.com

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
4684	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
900	PING.EXE

Suspicious behavior: EnumeratesProcesses 11 IoCs

pid	Process
2816	Launcher.exe
4496	powershell.exe
4496	powershell.exe
1708	powershell.exe
1708	powershell.exe
1556	powershell.exe
1556	powershell.exe
2708	powershell.exe
2708	powershell.exe
3864	powershell.exe
3864	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2816	Launcher.exe
Token: SeIncreaseQuotaPrivilege	116	wmic.exe
Token: SeSecurityPrivilege	116	wmic.exe
Token: SeTakeOwnershipPrivilege	116	wmic.exe
Token: SeLoadDriverPrivilege	116	wmic.exe
Token: SeSystemProfilePrivilege	116	wmic.exe
Token: SeSystemtimePrivilege	116	wmic.exe
Token: SeProfSingleProcessPrivilege	116	wmic.exe
Token: SeIncBasePriorityPrivilege	116	wmic.exe
Token: SeCreatePagefilePrivilege	116	wmic.exe
Token: SeBackupPrivilege	116	wmic.exe
Token: SeRestorePrivilege	116	wmic.exe
Token: SeShutdownPrivilege	116	wmic.exe
Token: SeDebugPrivilege	116	wmic.exe
Token: SeSystemEnvironmentPrivilege	116	wmic.exe
Token: SeRemoteShutdownPrivilege	116	wmic.exe
Token: SeUndockPrivilege	116	wmic.exe
Token: SeManageVolumePrivilege	116	wmic.exe
Token: 33	116	wmic.exe
Token: 34	116	wmic.exe
Token: 35	116	wmic.exe
Token: 36	116	wmic.exe
Token: SeIncreaseQuotaPrivilege	116	wmic.exe
Token: SeSecurityPrivilege	116	wmic.exe
Token: SeTakeOwnershipPrivilege	116	wmic.exe
Token: SeLoadDriverPrivilege	116	wmic.exe
Token: SeSystemProfilePrivilege	116	wmic.exe
Token: SeSystemtimePrivilege	116	wmic.exe
Token: SeProfSingleProcessPrivilege	116	wmic.exe
Token: SeIncBasePriorityPrivilege	116	wmic.exe
Token: SeCreatePagefilePrivilege	116	wmic.exe
Token: SeBackupPrivilege	116	wmic.exe
Token: SeRestorePrivilege	116	wmic.exe
Token: SeShutdownPrivilege	116	wmic.exe
Token: SeDebugPrivilege	116	wmic.exe
Token: SeSystemEnvironmentPrivilege	116	wmic.exe
Token: SeRemoteShutdownPrivilege	116	wmic.exe
Token: SeUndockPrivilege	116	wmic.exe
Token: SeManageVolumePrivilege	116	wmic.exe
Token: 33	116	wmic.exe
Token: 34	116	wmic.exe
Token: 35	116	wmic.exe
Token: 36	116	wmic.exe
Token: SeDebugPrivilege	4496	powershell.exe
Token: SeDebugPrivilege	1708	powershell.exe
Token: SeDebugPrivilege	1556	powershell.exe
Token: SeDebugPrivilege	2708	powershell.exe
Token: SeIncreaseQuotaPrivilege	2120	wmic.exe
Token: SeSecurityPrivilege	2120	wmic.exe
Token: SeTakeOwnershipPrivilege	2120	wmic.exe
Token: SeLoadDriverPrivilege	2120	wmic.exe
Token: SeSystemProfilePrivilege	2120	wmic.exe
Token: SeSystemtimePrivilege	2120	wmic.exe
Token: SeProfSingleProcessPrivilege	2120	wmic.exe
Token: SeIncBasePriorityPrivilege	2120	wmic.exe
Token: SeCreatePagefilePrivilege	2120	wmic.exe
Token: SeBackupPrivilege	2120	wmic.exe
Token: SeRestorePrivilege	2120	wmic.exe
Token: SeShutdownPrivilege	2120	wmic.exe
Token: SeDebugPrivilege	2120	wmic.exe
Token: SeSystemEnvironmentPrivilege	2120	wmic.exe
Token: SeRemoteShutdownPrivilege	2120	wmic.exe
Token: SeUndockPrivilege	2120	wmic.exe
Token: SeManageVolumePrivilege	2120	wmic.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 2816 wrote to memory of 116	2816	Launcher.exe	81
PID 2816 wrote to memory of 116	2816	Launcher.exe	81
PID 2816 wrote to memory of 4176	2816	Launcher.exe	84
PID 2816 wrote to memory of 4176	2816	Launcher.exe	84
PID 2816 wrote to memory of 4496	2816	Launcher.exe	86
PID 2816 wrote to memory of 4496	2816	Launcher.exe	86
PID 2816 wrote to memory of 1708	2816	Launcher.exe	88
PID 2816 wrote to memory of 1708	2816	Launcher.exe	88
PID 2816 wrote to memory of 1556	2816	Launcher.exe	90
PID 2816 wrote to memory of 1556	2816	Launcher.exe	90
PID 2816 wrote to memory of 2708	2816	Launcher.exe	92
PID 2816 wrote to memory of 2708	2816	Launcher.exe	92
PID 2816 wrote to memory of 2120	2816	Launcher.exe	94
PID 2816 wrote to memory of 2120	2816	Launcher.exe	94
PID 2816 wrote to memory of 1888	2816	Launcher.exe	96
PID 2816 wrote to memory of 1888	2816	Launcher.exe	96
PID 2816 wrote to memory of 3164	2816	Launcher.exe	98
PID 2816 wrote to memory of 3164	2816	Launcher.exe	98
PID 2816 wrote to memory of 3864	2816	Launcher.exe	100
PID 2816 wrote to memory of 3864	2816	Launcher.exe	100
PID 2816 wrote to memory of 4684	2816	Launcher.exe	104
PID 2816 wrote to memory of 4684	2816	Launcher.exe	104
PID 2816 wrote to memory of 4268	2816	Launcher.exe	107
PID 2816 wrote to memory of 4268	2816	Launcher.exe	107
PID 4268 wrote to memory of 900	4268	cmd.exe	109
PID 4268 wrote to memory of 900	4268	cmd.exe	109

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
4176	attrib.exe

C:\Users\Admin\AppData\Local\Temp\Launcher.exe
"C:\Users\Admin\AppData\Local\Temp\Launcher.exe"
1⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2816
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:116
- C:\Windows\SYSTEM32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\Launcher.exe"
  2⤵
  - Views/modifies file attributes
  PID:4176
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\Launcher.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4496
- 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⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1708
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Get-ItemPropertyValue -Path HKCU:SOFTWARE\Roblox\RobloxStudioBrowser\roblox.com -Name .ROBLOSECURITY
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1556
- 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:2708
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2120
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:1888
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:3164
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Get-ItemPropertyValue -Path 'HKLM:System\CurrentControlSet\Control\Session Manager\Environment' -Name PROCESSOR_IDENTIFIER
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  PID:3864
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:4684
- C:\Windows\SYSTEM32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\Launcher.exe" && pause
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4268
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - Runs ping.exe
    PID:900

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

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Remote System Discovery

T1018

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

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
77d622bb1a5b250869a3238b9bc1402b

SHA1
d47f4003c2554b9dfc4c16f22460b331886b191b

SHA256
f97ff12a8abf4bf88bb6497bd2ac2da12628c8847a8ba5a9026bdbb76507cdfb

SHA512
d6789b5499f23c9035375a102271e17a8a82e57d6f5312fa24242e08a83efdeb8becb7622f55c4cf1b89c7d864b445df11f4d994cf7e2f87a900535bcca12fd9

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

Filesize
948B

MD5
1a58f982c18490e622e00d4eb75ace5a

SHA1
60c30527b74659ecf09089a5a7c02a1df9a71b65

SHA256
4b7f800c0dea209162cc86627983993127eb20e3f8616646c41cb3ce15d9b39d

SHA512
ddab516a967783c5951717853aa5b3ef6dd5b442db50092888b2e7f3179fc68120fcde69a08d6ab280740eaadb6eadfc758c3118b52706f869e48ac1aebda480

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
b97dcce26bfd19481f2589acb5d5c53e

SHA1
78483c36b9f76b7ad21783655f11451546d83157

SHA256
78cdcbbae48288a069928c697f6c6b1829c3b458c212ef450dfb8fb5bfb60aa4

SHA512
b1b4d6ea7c4df0298eb5ad000783bceb0865ae4429e14f90fc95334c144e6e0d100d8432c3d6145154c72b46eafb7e3c6c4263483d9e7347d7d91b11b25d68a2

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_1etbbewx.3zk.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/2816-72-0x000001DE38510000-0x000001DE38522000-memory.dmp

Filesize
72KB

Download
memory/2816-35-0x000001DE382E0000-0x000001DE382FE000-memory.dmp

Filesize
120KB

Download
memory/2816-90-0x00007FFB9F980000-0x00007FFBA0441000-memory.dmp

Filesize
10.8MB

Download
memory/2816-71-0x000001DE38300000-0x000001DE3830A000-memory.dmp

Filesize
40KB

Download
memory/2816-2-0x00007FFB9F980000-0x00007FFBA0441000-memory.dmp

Filesize
10.8MB

Download
memory/2816-33-0x000001DE38340000-0x000001DE383B6000-memory.dmp

Filesize
472KB

Download
memory/2816-34-0x000001DE383C0000-0x000001DE38410000-memory.dmp

Filesize
320KB

Download
memory/2816-0-0x000001DE1DBB0000-0x000001DE1DC32000-memory.dmp

Filesize
520KB

Download
memory/2816-1-0x00007FFB9F983000-0x00007FFB9F985000-memory.dmp

Filesize
8KB

Download
memory/4496-15-0x00007FFB9F980000-0x00007FFBA0441000-memory.dmp

Filesize
10.8MB

Download
memory/4496-4-0x00007FFB9F980000-0x00007FFBA0441000-memory.dmp

Filesize
10.8MB

Download
memory/4496-3-0x00007FFB9F980000-0x00007FFBA0441000-memory.dmp

Filesize
10.8MB

Download
memory/4496-14-0x000002C664410000-0x000002C664432000-memory.dmp

Filesize
136KB

Download
memory/4496-18-0x00007FFB9F980000-0x00007FFBA0441000-memory.dmp

Filesize
10.8MB

Download