umbral | 3d33b7e8a8541de77e1428e6998cf1d77e1e3c7121ff42bb92285614db513bc9

Analysis

max time kernel
132s
max time network
127s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
27-08-2024 20:25

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General

Target

3d33b7e8a8541de77e1428e6998cf1d77e1e3c7121ff42bb92285614db513bc9.exe
Size

240KB
MD5

3ab1d460b16ec34493d9d769729a53fc
SHA1

e7e379fb8d8390103e53c31f07a52dbd1bc796a1
SHA256

3d33b7e8a8541de77e1428e6998cf1d77e1e3c7121ff42bb92285614db513bc9
SHA512

37d59d665ed891832e3e8efd6b74116bb51230a69b1c5fff53e2aaf8eaaade4d807215dae3bbd26ec5812f8bae55f2d982e975d38c0d6ce684b5b2cea93f2949
SSDEEP

6144:vloZMNrIkd8g+EtXHkv/iD4lx4+Clg8e1mbTi:NoZmL+EP8DMwK+

Score

10^/10

umbral credential_access execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral2/memory/4984-1-0x000001C249260000-0x000001C2492A2000-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
2888	powershell.exe
1272	powershell.exe
1644	powershell.exe
2328	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
31	discord.com
32	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
2264	wmic.exe

Suspicious behavior: EnumeratesProcesses 10 IoCs

pid	Process
2328	powershell.exe
2328	powershell.exe
2888	powershell.exe
2888	powershell.exe
1272	powershell.exe
1272	powershell.exe
1000	powershell.exe
1000	powershell.exe
1644	powershell.exe
1644	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	4984	3d33b7e8a8541de77e1428e6998cf1d77e1e3c7121ff42bb92285614db513bc9.exe
Token: SeDebugPrivilege	2328	powershell.exe
Token: SeDebugPrivilege	2888	powershell.exe
Token: SeDebugPrivilege	1272	powershell.exe
Token: SeDebugPrivilege	1000	powershell.exe
Token: SeIncreaseQuotaPrivilege	536	wmic.exe
Token: SeSecurityPrivilege	536	wmic.exe
Token: SeTakeOwnershipPrivilege	536	wmic.exe
Token: SeLoadDriverPrivilege	536	wmic.exe
Token: SeSystemProfilePrivilege	536	wmic.exe
Token: SeSystemtimePrivilege	536	wmic.exe
Token: SeProfSingleProcessPrivilege	536	wmic.exe
Token: SeIncBasePriorityPrivilege	536	wmic.exe
Token: SeCreatePagefilePrivilege	536	wmic.exe
Token: SeBackupPrivilege	536	wmic.exe
Token: SeRestorePrivilege	536	wmic.exe
Token: SeShutdownPrivilege	536	wmic.exe
Token: SeDebugPrivilege	536	wmic.exe
Token: SeSystemEnvironmentPrivilege	536	wmic.exe
Token: SeRemoteShutdownPrivilege	536	wmic.exe
Token: SeUndockPrivilege	536	wmic.exe
Token: SeManageVolumePrivilege	536	wmic.exe
Token: 33	536	wmic.exe
Token: 34	536	wmic.exe
Token: 35	536	wmic.exe
Token: 36	536	wmic.exe
Token: SeIncreaseQuotaPrivilege	536	wmic.exe
Token: SeSecurityPrivilege	536	wmic.exe
Token: SeTakeOwnershipPrivilege	536	wmic.exe
Token: SeLoadDriverPrivilege	536	wmic.exe
Token: SeSystemProfilePrivilege	536	wmic.exe
Token: SeSystemtimePrivilege	536	wmic.exe
Token: SeProfSingleProcessPrivilege	536	wmic.exe
Token: SeIncBasePriorityPrivilege	536	wmic.exe
Token: SeCreatePagefilePrivilege	536	wmic.exe
Token: SeBackupPrivilege	536	wmic.exe
Token: SeRestorePrivilege	536	wmic.exe
Token: SeShutdownPrivilege	536	wmic.exe
Token: SeDebugPrivilege	536	wmic.exe
Token: SeSystemEnvironmentPrivilege	536	wmic.exe
Token: SeRemoteShutdownPrivilege	536	wmic.exe
Token: SeUndockPrivilege	536	wmic.exe
Token: SeManageVolumePrivilege	536	wmic.exe
Token: 33	536	wmic.exe
Token: 34	536	wmic.exe
Token: 35	536	wmic.exe
Token: 36	536	wmic.exe
Token: SeIncreaseQuotaPrivilege	4896	wmic.exe
Token: SeSecurityPrivilege	4896	wmic.exe
Token: SeTakeOwnershipPrivilege	4896	wmic.exe
Token: SeLoadDriverPrivilege	4896	wmic.exe
Token: SeSystemProfilePrivilege	4896	wmic.exe
Token: SeSystemtimePrivilege	4896	wmic.exe
Token: SeProfSingleProcessPrivilege	4896	wmic.exe
Token: SeIncBasePriorityPrivilege	4896	wmic.exe
Token: SeCreatePagefilePrivilege	4896	wmic.exe
Token: SeBackupPrivilege	4896	wmic.exe
Token: SeRestorePrivilege	4896	wmic.exe
Token: SeShutdownPrivilege	4896	wmic.exe
Token: SeDebugPrivilege	4896	wmic.exe
Token: SeSystemEnvironmentPrivilege	4896	wmic.exe
Token: SeRemoteShutdownPrivilege	4896	wmic.exe
Token: SeUndockPrivilege	4896	wmic.exe
Token: SeManageVolumePrivilege	4896	wmic.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 4984 wrote to memory of 2328	4984	3d33b7e8a8541de77e1428e6998cf1d77e1e3c7121ff42bb92285614db513bc9.exe	87
PID 4984 wrote to memory of 2328	4984	3d33b7e8a8541de77e1428e6998cf1d77e1e3c7121ff42bb92285614db513bc9.exe	87
PID 4984 wrote to memory of 2888	4984	3d33b7e8a8541de77e1428e6998cf1d77e1e3c7121ff42bb92285614db513bc9.exe	89
PID 4984 wrote to memory of 2888	4984	3d33b7e8a8541de77e1428e6998cf1d77e1e3c7121ff42bb92285614db513bc9.exe	89
PID 4984 wrote to memory of 1272	4984	3d33b7e8a8541de77e1428e6998cf1d77e1e3c7121ff42bb92285614db513bc9.exe	91
PID 4984 wrote to memory of 1272	4984	3d33b7e8a8541de77e1428e6998cf1d77e1e3c7121ff42bb92285614db513bc9.exe	91
PID 4984 wrote to memory of 1000	4984	3d33b7e8a8541de77e1428e6998cf1d77e1e3c7121ff42bb92285614db513bc9.exe	93
PID 4984 wrote to memory of 1000	4984	3d33b7e8a8541de77e1428e6998cf1d77e1e3c7121ff42bb92285614db513bc9.exe	93
PID 4984 wrote to memory of 536	4984	3d33b7e8a8541de77e1428e6998cf1d77e1e3c7121ff42bb92285614db513bc9.exe	98
PID 4984 wrote to memory of 536	4984	3d33b7e8a8541de77e1428e6998cf1d77e1e3c7121ff42bb92285614db513bc9.exe	98
PID 4984 wrote to memory of 4896	4984	3d33b7e8a8541de77e1428e6998cf1d77e1e3c7121ff42bb92285614db513bc9.exe	101
PID 4984 wrote to memory of 4896	4984	3d33b7e8a8541de77e1428e6998cf1d77e1e3c7121ff42bb92285614db513bc9.exe	101
PID 4984 wrote to memory of 2420	4984	3d33b7e8a8541de77e1428e6998cf1d77e1e3c7121ff42bb92285614db513bc9.exe	103
PID 4984 wrote to memory of 2420	4984	3d33b7e8a8541de77e1428e6998cf1d77e1e3c7121ff42bb92285614db513bc9.exe	103
PID 4984 wrote to memory of 1644	4984	3d33b7e8a8541de77e1428e6998cf1d77e1e3c7121ff42bb92285614db513bc9.exe	105
PID 4984 wrote to memory of 1644	4984	3d33b7e8a8541de77e1428e6998cf1d77e1e3c7121ff42bb92285614db513bc9.exe	105
PID 4984 wrote to memory of 2264	4984	3d33b7e8a8541de77e1428e6998cf1d77e1e3c7121ff42bb92285614db513bc9.exe	107
PID 4984 wrote to memory of 2264	4984	3d33b7e8a8541de77e1428e6998cf1d77e1e3c7121ff42bb92285614db513bc9.exe	107

C:\Users\Admin\AppData\Local\Temp\3d33b7e8a8541de77e1428e6998cf1d77e1e3c7121ff42bb92285614db513bc9.exe
"C:\Users\Admin\AppData\Local\Temp\3d33b7e8a8541de77e1428e6998cf1d77e1e3c7121ff42bb92285614db513bc9.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4984
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\3d33b7e8a8541de77e1428e6998cf1d77e1e3c7121ff42bb92285614db513bc9.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2328
- 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:2888
- 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:1272
- 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:1000
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:536
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:4896
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:2420
- 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:1644
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:2264

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

Replay Monitor

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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
47aec0ae6e0dfab5f91c35cd65d2c56a

SHA1
0bbe13618bdc0c402539cdfca81471aa501f5cad

SHA256
8f31385012b247db2cc50ecb164208fbbf5f8cdf7bfc951e8c2c8ad5fb04cf0b

SHA512
c4b7184a85c1d594012ba86390e651439d6cae63c76b94432faaaea410e4ef9bc62d88e68adf8f3abbe36e18ef9e4dc46c3e31a0d72089f98a22f04c8b4a8f12

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
af125c295a4eb2195f26c8ed6063a673

SHA1
677b1fc2131d12976968250f1fd8036fb65d7f49

SHA256
e04b803798ed80ff548179d82e18398c29d845245135ad0042c73bcbed42f349

SHA512
e2002b0b1f5cf1e9b20b44f5c0c373eff5edde379b7b6640438f3e37057bd547056fdbcac1f68ba9a7bfc9e9a70c15135bd85d89e8257c55ef71e6289963f170

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_vfcyjsgl.guo.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/2328-13-0x000001CFEC300000-0x000001CFEC322000-memory.dmp

Filesize
136KB

Download
memory/2328-14-0x00007FFD06660000-0x00007FFD07121000-memory.dmp

Filesize
10.8MB

Download
memory/2328-17-0x000001CFEC330000-0x000001CFEC49A000-memory.dmp

Filesize
1.4MB

Download
memory/2328-18-0x00007FFD06660000-0x00007FFD07121000-memory.dmp

Filesize
10.8MB

Download
memory/2328-3-0x00007FFD06660000-0x00007FFD07121000-memory.dmp

Filesize
10.8MB

Download
memory/4984-32-0x000001C263A20000-0x000001C263A70000-memory.dmp

Filesize
320KB

Download
memory/4984-31-0x000001C2639A0000-0x000001C263A16000-memory.dmp

Filesize
472KB

Download
memory/4984-33-0x000001C263970000-0x000001C26398E000-memory.dmp

Filesize
120KB

Download
memory/4984-1-0x000001C249260000-0x000001C2492A2000-memory.dmp

Filesize
264KB

Download
memory/4984-0-0x00007FFD06663000-0x00007FFD06665000-memory.dmp

Filesize
8KB

Download
memory/4984-69-0x000001C263C80000-0x000001C263C8A000-memory.dmp

Filesize
40KB

Download
memory/4984-70-0x000001C263CB0000-0x000001C263CC2000-memory.dmp

Filesize
72KB

Download
memory/4984-2-0x00007FFD06660000-0x00007FFD07121000-memory.dmp

Filesize
10.8MB

Download
memory/4984-85-0x00007FFD06663000-0x00007FFD06665000-memory.dmp

Filesize
8KB

Download
memory/4984-86-0x00007FFD06660000-0x00007FFD07121000-memory.dmp

Filesize
10.8MB

Download
memory/4984-90-0x00007FFD06660000-0x00007FFD07121000-memory.dmp

Filesize
10.8MB

Download