umbral | cfb7119e9b1eea0c3f511fb51952399c3f10edb91e12030e49a30172b0510e7e

Analysis

max time kernel
45s
max time network
47s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
25-08-2024 15:45

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General

Target

lol.exe
Size

229KB
MD5

ea031754ac9fe28dbc0c5915cb638e44
SHA1

14b2c7b94aefdfc911e26fc5deb6eb8b6d7c0aed
SHA256

cfb7119e9b1eea0c3f511fb51952399c3f10edb91e12030e49a30172b0510e7e
SHA512

39a0790b3bae0862b1ba87bd6d1165694ba09cfa5104935e00ebaa13924699b2efba92ee6e744d3d820a9c05f80fa41fa1649498dce8f430835e8c6e813c25bb
SSDEEP

6144:9loZM9rIkd8g+EtXHkv/iD4RugVzZqStvY5rWWDFZb8e1m7i:foZOL+EP8RugVzZqStvY5rWWD3V

Score

10^/10

umbral credential_access discovery execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/4152-1-0x00000228B9A50000-0x00000228B9A90000-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
1416	powershell.exe
768	powershell.exe
336	powershell.exe
912	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	lol.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
32	discord.com
34	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

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
3016	cmd.exe
1152	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
1532	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
1152	PING.EXE

Suspicious behavior: EnumeratesProcesses 10 IoCs

pid	Process
1416	powershell.exe
1416	powershell.exe
768	powershell.exe
768	powershell.exe
336	powershell.exe
336	powershell.exe
1616	powershell.exe
1616	powershell.exe
912	powershell.exe
912	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	4152	lol.exe
Token: SeDebugPrivilege	1416	powershell.exe
Token: SeDebugPrivilege	768	powershell.exe
Token: SeDebugPrivilege	336	powershell.exe
Token: SeDebugPrivilege	1616	powershell.exe
Token: SeIncreaseQuotaPrivilege	960	wmic.exe
Token: SeSecurityPrivilege	960	wmic.exe
Token: SeTakeOwnershipPrivilege	960	wmic.exe
Token: SeLoadDriverPrivilege	960	wmic.exe
Token: SeSystemProfilePrivilege	960	wmic.exe
Token: SeSystemtimePrivilege	960	wmic.exe
Token: SeProfSingleProcessPrivilege	960	wmic.exe
Token: SeIncBasePriorityPrivilege	960	wmic.exe
Token: SeCreatePagefilePrivilege	960	wmic.exe
Token: SeBackupPrivilege	960	wmic.exe
Token: SeRestorePrivilege	960	wmic.exe
Token: SeShutdownPrivilege	960	wmic.exe
Token: SeDebugPrivilege	960	wmic.exe
Token: SeSystemEnvironmentPrivilege	960	wmic.exe
Token: SeRemoteShutdownPrivilege	960	wmic.exe
Token: SeUndockPrivilege	960	wmic.exe
Token: SeManageVolumePrivilege	960	wmic.exe
Token: 33	960	wmic.exe
Token: 34	960	wmic.exe
Token: 35	960	wmic.exe
Token: 36	960	wmic.exe
Token: SeIncreaseQuotaPrivilege	960	wmic.exe
Token: SeSecurityPrivilege	960	wmic.exe
Token: SeTakeOwnershipPrivilege	960	wmic.exe
Token: SeLoadDriverPrivilege	960	wmic.exe
Token: SeSystemProfilePrivilege	960	wmic.exe
Token: SeSystemtimePrivilege	960	wmic.exe
Token: SeProfSingleProcessPrivilege	960	wmic.exe
Token: SeIncBasePriorityPrivilege	960	wmic.exe
Token: SeCreatePagefilePrivilege	960	wmic.exe
Token: SeBackupPrivilege	960	wmic.exe
Token: SeRestorePrivilege	960	wmic.exe
Token: SeShutdownPrivilege	960	wmic.exe
Token: SeDebugPrivilege	960	wmic.exe
Token: SeSystemEnvironmentPrivilege	960	wmic.exe
Token: SeRemoteShutdownPrivilege	960	wmic.exe
Token: SeUndockPrivilege	960	wmic.exe
Token: SeManageVolumePrivilege	960	wmic.exe
Token: 33	960	wmic.exe
Token: 34	960	wmic.exe
Token: 35	960	wmic.exe
Token: 36	960	wmic.exe
Token: SeIncreaseQuotaPrivilege	4412	wmic.exe
Token: SeSecurityPrivilege	4412	wmic.exe
Token: SeTakeOwnershipPrivilege	4412	wmic.exe
Token: SeLoadDriverPrivilege	4412	wmic.exe
Token: SeSystemProfilePrivilege	4412	wmic.exe
Token: SeSystemtimePrivilege	4412	wmic.exe
Token: SeProfSingleProcessPrivilege	4412	wmic.exe
Token: SeIncBasePriorityPrivilege	4412	wmic.exe
Token: SeCreatePagefilePrivilege	4412	wmic.exe
Token: SeBackupPrivilege	4412	wmic.exe
Token: SeRestorePrivilege	4412	wmic.exe
Token: SeShutdownPrivilege	4412	wmic.exe
Token: SeDebugPrivilege	4412	wmic.exe
Token: SeSystemEnvironmentPrivilege	4412	wmic.exe
Token: SeRemoteShutdownPrivilege	4412	wmic.exe
Token: SeUndockPrivilege	4412	wmic.exe
Token: SeManageVolumePrivilege	4412	wmic.exe

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 4152 wrote to memory of 2856	4152	lol.exe	84
PID 4152 wrote to memory of 2856	4152	lol.exe	84
PID 4152 wrote to memory of 1416	4152	lol.exe	87
PID 4152 wrote to memory of 1416	4152	lol.exe	87
PID 4152 wrote to memory of 768	4152	lol.exe	89
PID 4152 wrote to memory of 768	4152	lol.exe	89
PID 4152 wrote to memory of 336	4152	lol.exe	93
PID 4152 wrote to memory of 336	4152	lol.exe	93
PID 4152 wrote to memory of 1616	4152	lol.exe	95
PID 4152 wrote to memory of 1616	4152	lol.exe	95
PID 4152 wrote to memory of 960	4152	lol.exe	99
PID 4152 wrote to memory of 960	4152	lol.exe	99
PID 4152 wrote to memory of 4412	4152	lol.exe	102
PID 4152 wrote to memory of 4412	4152	lol.exe	102
PID 4152 wrote to memory of 856	4152	lol.exe	104
PID 4152 wrote to memory of 856	4152	lol.exe	104
PID 4152 wrote to memory of 912	4152	lol.exe	106
PID 4152 wrote to memory of 912	4152	lol.exe	106
PID 4152 wrote to memory of 1532	4152	lol.exe	109
PID 4152 wrote to memory of 1532	4152	lol.exe	109
PID 4152 wrote to memory of 3016	4152	lol.exe	111
PID 4152 wrote to memory of 3016	4152	lol.exe	111
PID 3016 wrote to memory of 1152	3016	cmd.exe	113
PID 3016 wrote to memory of 1152	3016	cmd.exe	113

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
2856	attrib.exe

C:\Users\Admin\AppData\Local\Temp\lol.exe
"C:\Users\Admin\AppData\Local\Temp\lol.exe"
1⤵
- Drops file in Drivers directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4152
- C:\Windows\SYSTEM32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\lol.exe"
  2⤵
  - Views/modifies file attributes
  PID:2856
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\lol.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1416
- 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:768
- 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:336
- 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:1616
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:960
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:4412
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:856
- 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:912
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:1532
- C:\Windows\SYSTEM32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\lol.exe" && pause
  2⤵
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:3016
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:1152

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
77d622bb1a5b250869a3238b9bc1402b

SHA1
d47f4003c2554b9dfc4c16f22460b331886b191b

SHA256
f97ff12a8abf4bf88bb6497bd2ac2da12628c8847a8ba5a9026bdbb76507cdfb

SHA512
d6789b5499f23c9035375a102271e17a8a82e57d6f5312fa24242e08a83efdeb8becb7622f55c4cf1b89c7d864b445df11f4d994cf7e2f87a900535bcca12fd9

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

Filesize
948B

MD5
df6c4e5c3091c14551e6c92f07717617

SHA1
1ea87111035496c1b2b74cef8b5c62d00ac072c9

SHA256
b79dc75372707ff84a643a9e4cff6fad2d1a936b54d458088850c62c96e2f231

SHA512
ab861efd0ff28a4bae3513a884d5b00c1b68d8f0bd54a00428bbb65a6954f8778e8f5300362025265251cb425c5ed77608b10776f382c3b392916ae46e38db35

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
9bd2fba17cd84cf30636143a4e369059

SHA1
44a7dbafa9b289dd74718dbf32ddb3da828fa574

SHA256
8f4d4284e6ec832ae012be0564ed549d8e8701fe597d08b334baa59ecb77e9d3

SHA512
e4f1ffbb45d50a6573b0bfce0adea300143ab3e8f2545f6e0e4e9d01763b3784beda6b371164820bd322fb275cb7d336f480976d91c0d150cea62a398896e980

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_c3sajz4z.n1h.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1416-4-0x00007FFEC3A50000-0x00007FFEC4511000-memory.dmp

Filesize
10.8MB

Download
memory/1416-17-0x00007FFEC3A50000-0x00007FFEC4511000-memory.dmp

Filesize
10.8MB

Download
memory/1416-10-0x000001D96B880000-0x000001D96B8A2000-memory.dmp

Filesize
136KB

Download
memory/1416-3-0x00007FFEC3A50000-0x00007FFEC4511000-memory.dmp

Filesize
10.8MB

Download
memory/4152-0-0x00007FFEC3A53000-0x00007FFEC3A55000-memory.dmp

Filesize
8KB

Download
memory/4152-32-0x00000228D41B0000-0x00000228D4226000-memory.dmp

Filesize
472KB

Download
memory/4152-33-0x00000228D4280000-0x00000228D42D0000-memory.dmp

Filesize
320KB

Download
memory/4152-34-0x00000228BB6E0000-0x00000228BB6FE000-memory.dmp

Filesize
120KB

Download
memory/4152-2-0x00007FFEC3A50000-0x00007FFEC4511000-memory.dmp

Filesize
10.8MB

Download
memory/4152-70-0x00000228D4140000-0x00000228D414A000-memory.dmp

Filesize
40KB

Download
memory/4152-71-0x00000228D4180000-0x00000228D4192000-memory.dmp

Filesize
72KB

Download
memory/4152-1-0x00000228B9A50000-0x00000228B9A90000-memory.dmp

Filesize
256KB

Download
memory/4152-89-0x00007FFEC3A50000-0x00007FFEC4511000-memory.dmp

Filesize
10.8MB

Download