umbral | 5658f42d6332d99827d772a710d74e905f822d23e958c86f802973c2cffe850f

Resubmissions

27-04-2024 22:30

240427-2e6b3aac8y 10

27-04-2024 22:14

240427-15m3qsaa31 10

Analysis

max time kernel
94s
max time network
96s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
27-04-2024 22:14

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General

Target

l0xmdpqk.ylw.bin.exe
Size

227KB
MD5

7f32dcbb00de079c31ff7895ae9c0560
SHA1

e80841a355b8dce9955b9bbba63f02a4ad31a836
SHA256

5658f42d6332d99827d772a710d74e905f822d23e958c86f802973c2cffe850f
SHA512

776cabc7d2442d90655eec0f434c811146b7f569dbace3c8609a582c167af5990ec25d1d7a8eb111744cecbdcd43d37af7d623eb97eb414ad926371083f7aadc
SSDEEP

6144:bloZM+9EB1/SqctonEPfCqAu0+prdmK13Up7a6rhgj8e1m5l:5oZQdSqcwvu0+prdmK13Up7a6rhQM

Score

10^/10

umbral spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral2/memory/2496-0-0x000001EC35B30000-0x000001EC35B70000-memory.dmp	family_umbral

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

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	l0xmdpqk.ylw.bin.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
26	discord.com
27	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
17	ip-api.com

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
2036	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
4464	PING.EXE

Suspicious behavior: EnumeratesProcesses 11 IoCs

pid	Process
2496	l0xmdpqk.ylw.bin.exe
4116	powershell.exe
4116	powershell.exe
2740	powershell.exe
2740	powershell.exe
2148	powershell.exe
2148	powershell.exe
3052	powershell.exe
3052	powershell.exe
1704	powershell.exe
1704	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2496	l0xmdpqk.ylw.bin.exe
Token: SeIncreaseQuotaPrivilege	544	wmic.exe
Token: SeSecurityPrivilege	544	wmic.exe
Token: SeTakeOwnershipPrivilege	544	wmic.exe
Token: SeLoadDriverPrivilege	544	wmic.exe
Token: SeSystemProfilePrivilege	544	wmic.exe
Token: SeSystemtimePrivilege	544	wmic.exe
Token: SeProfSingleProcessPrivilege	544	wmic.exe
Token: SeIncBasePriorityPrivilege	544	wmic.exe
Token: SeCreatePagefilePrivilege	544	wmic.exe
Token: SeBackupPrivilege	544	wmic.exe
Token: SeRestorePrivilege	544	wmic.exe
Token: SeShutdownPrivilege	544	wmic.exe
Token: SeDebugPrivilege	544	wmic.exe
Token: SeSystemEnvironmentPrivilege	544	wmic.exe
Token: SeRemoteShutdownPrivilege	544	wmic.exe
Token: SeUndockPrivilege	544	wmic.exe
Token: SeManageVolumePrivilege	544	wmic.exe
Token: 33	544	wmic.exe
Token: 34	544	wmic.exe
Token: 35	544	wmic.exe
Token: 36	544	wmic.exe
Token: SeIncreaseQuotaPrivilege	544	wmic.exe
Token: SeSecurityPrivilege	544	wmic.exe
Token: SeTakeOwnershipPrivilege	544	wmic.exe
Token: SeLoadDriverPrivilege	544	wmic.exe
Token: SeSystemProfilePrivilege	544	wmic.exe
Token: SeSystemtimePrivilege	544	wmic.exe
Token: SeProfSingleProcessPrivilege	544	wmic.exe
Token: SeIncBasePriorityPrivilege	544	wmic.exe
Token: SeCreatePagefilePrivilege	544	wmic.exe
Token: SeBackupPrivilege	544	wmic.exe
Token: SeRestorePrivilege	544	wmic.exe
Token: SeShutdownPrivilege	544	wmic.exe
Token: SeDebugPrivilege	544	wmic.exe
Token: SeSystemEnvironmentPrivilege	544	wmic.exe
Token: SeRemoteShutdownPrivilege	544	wmic.exe
Token: SeUndockPrivilege	544	wmic.exe
Token: SeManageVolumePrivilege	544	wmic.exe
Token: 33	544	wmic.exe
Token: 34	544	wmic.exe
Token: 35	544	wmic.exe
Token: 36	544	wmic.exe
Token: SeDebugPrivilege	4116	powershell.exe
Token: SeDebugPrivilege	2740	powershell.exe
Token: SeDebugPrivilege	2148	powershell.exe
Token: SeDebugPrivilege	3052	powershell.exe
Token: SeIncreaseQuotaPrivilege	4480	wmic.exe
Token: SeSecurityPrivilege	4480	wmic.exe
Token: SeTakeOwnershipPrivilege	4480	wmic.exe
Token: SeLoadDriverPrivilege	4480	wmic.exe
Token: SeSystemProfilePrivilege	4480	wmic.exe
Token: SeSystemtimePrivilege	4480	wmic.exe
Token: SeProfSingleProcessPrivilege	4480	wmic.exe
Token: SeIncBasePriorityPrivilege	4480	wmic.exe
Token: SeCreatePagefilePrivilege	4480	wmic.exe
Token: SeBackupPrivilege	4480	wmic.exe
Token: SeRestorePrivilege	4480	wmic.exe
Token: SeShutdownPrivilege	4480	wmic.exe
Token: SeDebugPrivilege	4480	wmic.exe
Token: SeSystemEnvironmentPrivilege	4480	wmic.exe
Token: SeRemoteShutdownPrivilege	4480	wmic.exe
Token: SeUndockPrivilege	4480	wmic.exe
Token: SeManageVolumePrivilege	4480	wmic.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 2496 wrote to memory of 544	2496	l0xmdpqk.ylw.bin.exe	85
PID 2496 wrote to memory of 544	2496	l0xmdpqk.ylw.bin.exe	85
PID 2496 wrote to memory of 5032	2496	l0xmdpqk.ylw.bin.exe	88
PID 2496 wrote to memory of 5032	2496	l0xmdpqk.ylw.bin.exe	88
PID 2496 wrote to memory of 4116	2496	l0xmdpqk.ylw.bin.exe	90
PID 2496 wrote to memory of 4116	2496	l0xmdpqk.ylw.bin.exe	90
PID 2496 wrote to memory of 2740	2496	l0xmdpqk.ylw.bin.exe	92
PID 2496 wrote to memory of 2740	2496	l0xmdpqk.ylw.bin.exe	92
PID 2496 wrote to memory of 2148	2496	l0xmdpqk.ylw.bin.exe	94
PID 2496 wrote to memory of 2148	2496	l0xmdpqk.ylw.bin.exe	94
PID 2496 wrote to memory of 3052	2496	l0xmdpqk.ylw.bin.exe	96
PID 2496 wrote to memory of 3052	2496	l0xmdpqk.ylw.bin.exe	96
PID 2496 wrote to memory of 4480	2496	l0xmdpqk.ylw.bin.exe	98
PID 2496 wrote to memory of 4480	2496	l0xmdpqk.ylw.bin.exe	98
PID 2496 wrote to memory of 3884	2496	l0xmdpqk.ylw.bin.exe	100
PID 2496 wrote to memory of 3884	2496	l0xmdpqk.ylw.bin.exe	100
PID 2496 wrote to memory of 4408	2496	l0xmdpqk.ylw.bin.exe	102
PID 2496 wrote to memory of 4408	2496	l0xmdpqk.ylw.bin.exe	102
PID 2496 wrote to memory of 1704	2496	l0xmdpqk.ylw.bin.exe	104
PID 2496 wrote to memory of 1704	2496	l0xmdpqk.ylw.bin.exe	104
PID 2496 wrote to memory of 2036	2496	l0xmdpqk.ylw.bin.exe	106
PID 2496 wrote to memory of 2036	2496	l0xmdpqk.ylw.bin.exe	106
PID 2496 wrote to memory of 3968	2496	l0xmdpqk.ylw.bin.exe	108
PID 2496 wrote to memory of 3968	2496	l0xmdpqk.ylw.bin.exe	108
PID 3968 wrote to memory of 4464	3968	cmd.exe	110
PID 3968 wrote to memory of 4464	3968	cmd.exe	110

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
5032	attrib.exe

C:\Users\Admin\AppData\Local\Temp\l0xmdpqk.ylw.bin.exe
"C:\Users\Admin\AppData\Local\Temp\l0xmdpqk.ylw.bin.exe"
1⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2496
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:544
- C:\Windows\SYSTEM32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\l0xmdpqk.ylw.bin.exe"
  2⤵
  - Views/modifies file attributes
  PID:5032
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\l0xmdpqk.ylw.bin.exe'
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4116
- 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:2740
- 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:2148
- 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:3052
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:4480
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:3884
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:4408
- 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:1704
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:2036
- C:\Windows\SYSTEM32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\l0xmdpqk.ylw.bin.exe" && pause
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3968
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - Runs ping.exe
    PID:4464

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

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

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
6d42b6da621e8df5674e26b799c8e2aa

SHA1
ab3ce1327ea1eeedb987ec823d5e0cb146bafa48

SHA256
5ab6a1726f425c6d0158f55eb8d81754ddedd51e651aa0a899a29b7a58619c4c

SHA512
53faffbda8a835bc1143e894c118c15901a5fd09cfc2224dd2f754c06dc794897315049a579b9a8382d4564f071576045aaaf824019b7139d939152dca38ce29

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

Filesize
948B

MD5
084f18b6ff291729e6f5cf628977198e

SHA1
c82d27261030eef59ad2258d4eeb9119116a67a1

SHA256
a7570027dec18cac2a8bdefe9c49621040d12f4f07d935202a66691a119a9ee1

SHA512
8835aaec15895d90c724b0a7671f7b68dae23389124949336d2fa7d8fffe980421b625d8d8a0a73f9a6e9affc23c0ccdcc5998820adcf5829df7bd1fa7e6c73a

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
7511c81925750deb7ad1b9b80eea8a8d

SHA1
6ea759b3cbd243ae11435c6d6c5ced185eb01f49

SHA256
5b49723a7773f2fe1f6093236e7b9b2c546f0873635d02346cb39535811234fa

SHA512
5f7e69316d39525d137a7a833f8c746ceef8f1b2295348393fb3244cca8b962fbaad0f7da49da453fe97e2c49b1f41f06138111ac5ff97fdc33c300350ec3a1b

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_5ktc4uvi.j1g.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/2496-71-0x000001EC500B0000-0x000001EC500BA000-memory.dmp

Filesize
40KB

Download
memory/2496-35-0x000001EC50380000-0x000001EC5039E000-memory.dmp

Filesize
120KB

Download
memory/2496-90-0x00007FFBFE6C0000-0x00007FFBFF181000-memory.dmp

Filesize
10.8MB

Download
memory/2496-72-0x000001EC50230000-0x000001EC50242000-memory.dmp

Filesize
72KB

Download
memory/2496-2-0x000001EC500E0000-0x000001EC500F0000-memory.dmp

Filesize
64KB

Download
memory/2496-33-0x000001EC502B0000-0x000001EC50326000-memory.dmp

Filesize
472KB

Download
memory/2496-34-0x000001EC50330000-0x000001EC50380000-memory.dmp

Filesize
320KB

Download
memory/2496-0-0x000001EC35B30000-0x000001EC35B70000-memory.dmp

Filesize
256KB

Download
memory/2496-1-0x00007FFBFE6C0000-0x00007FFBFF181000-memory.dmp

Filesize
10.8MB

Download
memory/4116-15-0x0000022F47090000-0x0000022F470B2000-memory.dmp

Filesize
136KB

Download
memory/4116-5-0x0000022F470F0000-0x0000022F47100000-memory.dmp

Filesize
64KB

Download
memory/4116-3-0x00007FFBFE6C0000-0x00007FFBFF181000-memory.dmp

Filesize
10.8MB

Download
memory/4116-4-0x0000022F470F0000-0x0000022F47100000-memory.dmp

Filesize
64KB

Download
memory/4116-18-0x00007FFBFE6C0000-0x00007FFBFF181000-memory.dmp

Filesize
10.8MB

Download