umbral | 7d620b8c48e10d1d76c421950d2110b7e45972a0037d81168a90658b31e4cf2d

Analysis

max time kernel
119s
max time network
123s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
09-07-2024 19:59

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General

Target

OptimizedBox-DataSwap2.0.exe
Size

231KB
MD5

cc77383b81a5c1c3e55234691e3dc519
SHA1

2e4af74a0880635706feefde2d6a90a5d77c277c
SHA256

7d620b8c48e10d1d76c421950d2110b7e45972a0037d81168a90658b31e4cf2d
SHA512

573e84b86903e6465f9199c485efa7dcaa04759f0afbfa9f5737ec64123a6ebf2b109a7fa67f1ae63c05fa88cda444f96a11d9dd8e1e5da08b1aa75e056afdd2
SSDEEP

6144:jloZM+rIkd8g+EtXHkv/iD4aphB3tW+xSkt/qqf7mkb8e1mGtAi:BoZtL+EP8aphB3tW+xSkt/qqf3ltZ

Score

10^/10

umbral execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/3044-1-0x0000000001180000-0x00000000011C0000-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
2720	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	OptimizedBox-DataSwap2.0.exe

Deletes itself 1 IoCs

pid	Process
3016	cmd.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
8	discord.com
7	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
4	ip-api.com

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
2340	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2432	PING.EXE

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
3044	OptimizedBox-DataSwap2.0.exe
2720	powershell.exe
2676	powershell.exe
1780	powershell.exe
2092	powershell.exe
968	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	3044	OptimizedBox-DataSwap2.0.exe
Token: SeIncreaseQuotaPrivilege	2888	wmic.exe
Token: SeSecurityPrivilege	2888	wmic.exe
Token: SeTakeOwnershipPrivilege	2888	wmic.exe
Token: SeLoadDriverPrivilege	2888	wmic.exe
Token: SeSystemProfilePrivilege	2888	wmic.exe
Token: SeSystemtimePrivilege	2888	wmic.exe
Token: SeProfSingleProcessPrivilege	2888	wmic.exe
Token: SeIncBasePriorityPrivilege	2888	wmic.exe
Token: SeCreatePagefilePrivilege	2888	wmic.exe
Token: SeBackupPrivilege	2888	wmic.exe
Token: SeRestorePrivilege	2888	wmic.exe
Token: SeShutdownPrivilege	2888	wmic.exe
Token: SeDebugPrivilege	2888	wmic.exe
Token: SeSystemEnvironmentPrivilege	2888	wmic.exe
Token: SeRemoteShutdownPrivilege	2888	wmic.exe
Token: SeUndockPrivilege	2888	wmic.exe
Token: SeManageVolumePrivilege	2888	wmic.exe
Token: 33	2888	wmic.exe
Token: 34	2888	wmic.exe
Token: 35	2888	wmic.exe
Token: SeIncreaseQuotaPrivilege	2888	wmic.exe
Token: SeSecurityPrivilege	2888	wmic.exe
Token: SeTakeOwnershipPrivilege	2888	wmic.exe
Token: SeLoadDriverPrivilege	2888	wmic.exe
Token: SeSystemProfilePrivilege	2888	wmic.exe
Token: SeSystemtimePrivilege	2888	wmic.exe
Token: SeProfSingleProcessPrivilege	2888	wmic.exe
Token: SeIncBasePriorityPrivilege	2888	wmic.exe
Token: SeCreatePagefilePrivilege	2888	wmic.exe
Token: SeBackupPrivilege	2888	wmic.exe
Token: SeRestorePrivilege	2888	wmic.exe
Token: SeShutdownPrivilege	2888	wmic.exe
Token: SeDebugPrivilege	2888	wmic.exe
Token: SeSystemEnvironmentPrivilege	2888	wmic.exe
Token: SeRemoteShutdownPrivilege	2888	wmic.exe
Token: SeUndockPrivilege	2888	wmic.exe
Token: SeManageVolumePrivilege	2888	wmic.exe
Token: 33	2888	wmic.exe
Token: 34	2888	wmic.exe
Token: 35	2888	wmic.exe
Token: SeDebugPrivilege	2720	powershell.exe
Token: SeDebugPrivilege	2676	powershell.exe
Token: SeDebugPrivilege	1780	powershell.exe
Token: SeDebugPrivilege	2092	powershell.exe
Token: SeIncreaseQuotaPrivilege	2828	wmic.exe
Token: SeSecurityPrivilege	2828	wmic.exe
Token: SeTakeOwnershipPrivilege	2828	wmic.exe
Token: SeLoadDriverPrivilege	2828	wmic.exe
Token: SeSystemProfilePrivilege	2828	wmic.exe
Token: SeSystemtimePrivilege	2828	wmic.exe
Token: SeProfSingleProcessPrivilege	2828	wmic.exe
Token: SeIncBasePriorityPrivilege	2828	wmic.exe
Token: SeCreatePagefilePrivilege	2828	wmic.exe
Token: SeBackupPrivilege	2828	wmic.exe
Token: SeRestorePrivilege	2828	wmic.exe
Token: SeShutdownPrivilege	2828	wmic.exe
Token: SeDebugPrivilege	2828	wmic.exe
Token: SeSystemEnvironmentPrivilege	2828	wmic.exe
Token: SeRemoteShutdownPrivilege	2828	wmic.exe
Token: SeUndockPrivilege	2828	wmic.exe
Token: SeManageVolumePrivilege	2828	wmic.exe
Token: 33	2828	wmic.exe
Token: 34	2828	wmic.exe

Suspicious use of WriteProcessMemory 39 IoCs

description	pid	Process	procid_target
PID 3044 wrote to memory of 2888	3044	OptimizedBox-DataSwap2.0.exe	30
PID 3044 wrote to memory of 2888	3044	OptimizedBox-DataSwap2.0.exe	30
PID 3044 wrote to memory of 2888	3044	OptimizedBox-DataSwap2.0.exe	30
PID 3044 wrote to memory of 2768	3044	OptimizedBox-DataSwap2.0.exe	33
PID 3044 wrote to memory of 2768	3044	OptimizedBox-DataSwap2.0.exe	33
PID 3044 wrote to memory of 2768	3044	OptimizedBox-DataSwap2.0.exe	33
PID 3044 wrote to memory of 2720	3044	OptimizedBox-DataSwap2.0.exe	35
PID 3044 wrote to memory of 2720	3044	OptimizedBox-DataSwap2.0.exe	35
PID 3044 wrote to memory of 2720	3044	OptimizedBox-DataSwap2.0.exe	35
PID 3044 wrote to memory of 2676	3044	OptimizedBox-DataSwap2.0.exe	37
PID 3044 wrote to memory of 2676	3044	OptimizedBox-DataSwap2.0.exe	37
PID 3044 wrote to memory of 2676	3044	OptimizedBox-DataSwap2.0.exe	37
PID 3044 wrote to memory of 1780	3044	OptimizedBox-DataSwap2.0.exe	39
PID 3044 wrote to memory of 1780	3044	OptimizedBox-DataSwap2.0.exe	39
PID 3044 wrote to memory of 1780	3044	OptimizedBox-DataSwap2.0.exe	39
PID 3044 wrote to memory of 2092	3044	OptimizedBox-DataSwap2.0.exe	41
PID 3044 wrote to memory of 2092	3044	OptimizedBox-DataSwap2.0.exe	41
PID 3044 wrote to memory of 2092	3044	OptimizedBox-DataSwap2.0.exe	41
PID 3044 wrote to memory of 2828	3044	OptimizedBox-DataSwap2.0.exe	43
PID 3044 wrote to memory of 2828	3044	OptimizedBox-DataSwap2.0.exe	43
PID 3044 wrote to memory of 2828	3044	OptimizedBox-DataSwap2.0.exe	43
PID 3044 wrote to memory of 1644	3044	OptimizedBox-DataSwap2.0.exe	45
PID 3044 wrote to memory of 1644	3044	OptimizedBox-DataSwap2.0.exe	45
PID 3044 wrote to memory of 1644	3044	OptimizedBox-DataSwap2.0.exe	45
PID 3044 wrote to memory of 2348	3044	OptimizedBox-DataSwap2.0.exe	47
PID 3044 wrote to memory of 2348	3044	OptimizedBox-DataSwap2.0.exe	47
PID 3044 wrote to memory of 2348	3044	OptimizedBox-DataSwap2.0.exe	47
PID 3044 wrote to memory of 968	3044	OptimizedBox-DataSwap2.0.exe	49
PID 3044 wrote to memory of 968	3044	OptimizedBox-DataSwap2.0.exe	49
PID 3044 wrote to memory of 968	3044	OptimizedBox-DataSwap2.0.exe	49
PID 3044 wrote to memory of 2340	3044	OptimizedBox-DataSwap2.0.exe	51
PID 3044 wrote to memory of 2340	3044	OptimizedBox-DataSwap2.0.exe	51
PID 3044 wrote to memory of 2340	3044	OptimizedBox-DataSwap2.0.exe	51
PID 3044 wrote to memory of 3016	3044	OptimizedBox-DataSwap2.0.exe	53
PID 3044 wrote to memory of 3016	3044	OptimizedBox-DataSwap2.0.exe	53
PID 3044 wrote to memory of 3016	3044	OptimizedBox-DataSwap2.0.exe	53
PID 3016 wrote to memory of 2432	3016	cmd.exe	55
PID 3016 wrote to memory of 2432	3016	cmd.exe	55
PID 3016 wrote to memory of 2432	3016	cmd.exe	55

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
2768	attrib.exe

C:\Users\Admin\AppData\Local\Temp\OptimizedBox-DataSwap2.0.exe
"C:\Users\Admin\AppData\Local\Temp\OptimizedBox-DataSwap2.0.exe"
1⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3044
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2888
- C:\Windows\system32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\OptimizedBox-DataSwap2.0.exe"
  2⤵
  - Views/modifies file attributes
  PID:2768
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\OptimizedBox-DataSwap2.0.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2720
- 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:2676
- 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:1780
- 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:2092
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2828
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:1644
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:2348
- 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:968
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:2340
- C:\Windows\system32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\OptimizedBox-DataSwap2.0.exe" && pause
  2⤵
  - Deletes itself
  - Suspicious use of WriteProcessMemory
  PID:3016
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - Runs ping.exe
    PID:2432

C:\Windows\explorer.exe
"C:\Windows\explorer.exe"
1⤵
PID:2356

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\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms

Filesize
7KB

MD5
d817913d671678957b0b9d16c2751fdb

SHA1
08812bb13a3531c193d3322f67d20861eaedafb8

SHA256
ee53db412948c98c630409c3fb2e8274831c3fa239e61340326ecc7379e7ae4a

SHA512
fcb5a5d3dcfca31584540a3c1af12579ea003e9751a450ea5fc30ae205a935e4fd79915d8546e150626d2b5eabcdaa464259daa156de8473b1723643e46cab43

Download Submit
memory/968-44-0x0000000001F40000-0x0000000001F48000-memory.dmp

Filesize
32KB

Download
memory/2676-14-0x000000001B620000-0x000000001B902000-memory.dmp

Filesize
2.9MB

Download
memory/2676-15-0x0000000002790000-0x0000000002798000-memory.dmp

Filesize
32KB

Download
memory/2720-7-0x000000001B5B0000-0x000000001B892000-memory.dmp

Filesize
2.9MB

Download
memory/2720-8-0x0000000001F70000-0x0000000001F78000-memory.dmp

Filesize
32KB

Download
memory/3044-0-0x000007FEF4E83000-0x000007FEF4E84000-memory.dmp

Filesize
4KB

Download
memory/3044-1-0x0000000001180000-0x00000000011C0000-memory.dmp

Filesize
256KB

Download
memory/3044-2-0x000007FEF4E80000-0x000007FEF586C000-memory.dmp

Filesize
9.9MB

Download
memory/3044-48-0x000007FEF4E80000-0x000007FEF586C000-memory.dmp

Filesize
9.9MB

Download