umbral | cdf0afcac0224a29fd1f7f02157a28f2ece5581a49fede543b337907af1d9288

Analysis

max time kernel
34s
max time network
38s
platform
windows11-21h2_x64
resource
win11-20240611-en
resource tags

arch:x64arch:x86image:win11-20240611-enlocale:en-usos:windows11-21h2-x64system
submitted
19-06-2024 10:57

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General

Target

PlagueByKitty.exe
Size

494KB
MD5

3fc34ffadd0750eab33911bc15c17c64
SHA1

ae8f5f769bc88728573e1505cb9fded184cde758
SHA256

cdf0afcac0224a29fd1f7f02157a28f2ece5581a49fede543b337907af1d9288
SHA512

eb196328793fe450ded192c3ea4b57bc6b74a4fd1fff67b3fdc234a9c4efdc1c41d7e678ec3969dc2277d808e5a30505bf3888e1af4ae3caff5877850c1c6f89
SSDEEP

6144:PloZM+rIkd8g+EtXHkv/iD4qPxkU69VeQbGkFZwPF5b8e1m4iebT:toZtL+EP8qPxkU69VeQbGkFZwny

Score

10^/10

umbral execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/3620-1-0x000001C6EE560000-0x000001C6EE5E2000-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
3364	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	PlagueByKitty.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
6	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
1	ip-api.com

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
3056	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
1796	PING.EXE

Suspicious behavior: EnumeratesProcesses 11 IoCs

pid	Process
3620	PlagueByKitty.exe
3364	powershell.exe
3364	powershell.exe
3680	powershell.exe
3680	powershell.exe
4676	powershell.exe
4676	powershell.exe
4996	powershell.exe
4996	powershell.exe
2128	powershell.exe
2128	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	3620	PlagueByKitty.exe
Token: SeIncreaseQuotaPrivilege	2308	wmic.exe
Token: SeSecurityPrivilege	2308	wmic.exe
Token: SeTakeOwnershipPrivilege	2308	wmic.exe
Token: SeLoadDriverPrivilege	2308	wmic.exe
Token: SeSystemProfilePrivilege	2308	wmic.exe
Token: SeSystemtimePrivilege	2308	wmic.exe
Token: SeProfSingleProcessPrivilege	2308	wmic.exe
Token: SeIncBasePriorityPrivilege	2308	wmic.exe
Token: SeCreatePagefilePrivilege	2308	wmic.exe
Token: SeBackupPrivilege	2308	wmic.exe
Token: SeRestorePrivilege	2308	wmic.exe
Token: SeShutdownPrivilege	2308	wmic.exe
Token: SeDebugPrivilege	2308	wmic.exe
Token: SeSystemEnvironmentPrivilege	2308	wmic.exe
Token: SeRemoteShutdownPrivilege	2308	wmic.exe
Token: SeUndockPrivilege	2308	wmic.exe
Token: SeManageVolumePrivilege	2308	wmic.exe
Token: 33	2308	wmic.exe
Token: 34	2308	wmic.exe
Token: 35	2308	wmic.exe
Token: 36	2308	wmic.exe
Token: SeIncreaseQuotaPrivilege	2308	wmic.exe
Token: SeSecurityPrivilege	2308	wmic.exe
Token: SeTakeOwnershipPrivilege	2308	wmic.exe
Token: SeLoadDriverPrivilege	2308	wmic.exe
Token: SeSystemProfilePrivilege	2308	wmic.exe
Token: SeSystemtimePrivilege	2308	wmic.exe
Token: SeProfSingleProcessPrivilege	2308	wmic.exe
Token: SeIncBasePriorityPrivilege	2308	wmic.exe
Token: SeCreatePagefilePrivilege	2308	wmic.exe
Token: SeBackupPrivilege	2308	wmic.exe
Token: SeRestorePrivilege	2308	wmic.exe
Token: SeShutdownPrivilege	2308	wmic.exe
Token: SeDebugPrivilege	2308	wmic.exe
Token: SeSystemEnvironmentPrivilege	2308	wmic.exe
Token: SeRemoteShutdownPrivilege	2308	wmic.exe
Token: SeUndockPrivilege	2308	wmic.exe
Token: SeManageVolumePrivilege	2308	wmic.exe
Token: 33	2308	wmic.exe
Token: 34	2308	wmic.exe
Token: 35	2308	wmic.exe
Token: 36	2308	wmic.exe
Token: SeDebugPrivilege	3364	powershell.exe
Token: SeDebugPrivilege	3680	powershell.exe
Token: SeDebugPrivilege	4676	powershell.exe
Token: SeDebugPrivilege	4996	powershell.exe
Token: SeIncreaseQuotaPrivilege	1660	wmic.exe
Token: SeSecurityPrivilege	1660	wmic.exe
Token: SeTakeOwnershipPrivilege	1660	wmic.exe
Token: SeLoadDriverPrivilege	1660	wmic.exe
Token: SeSystemProfilePrivilege	1660	wmic.exe
Token: SeSystemtimePrivilege	1660	wmic.exe
Token: SeProfSingleProcessPrivilege	1660	wmic.exe
Token: SeIncBasePriorityPrivilege	1660	wmic.exe
Token: SeCreatePagefilePrivilege	1660	wmic.exe
Token: SeBackupPrivilege	1660	wmic.exe
Token: SeRestorePrivilege	1660	wmic.exe
Token: SeShutdownPrivilege	1660	wmic.exe
Token: SeDebugPrivilege	1660	wmic.exe
Token: SeSystemEnvironmentPrivilege	1660	wmic.exe
Token: SeRemoteShutdownPrivilege	1660	wmic.exe
Token: SeUndockPrivilege	1660	wmic.exe
Token: SeManageVolumePrivilege	1660	wmic.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 3620 wrote to memory of 2308	3620	PlagueByKitty.exe	78
PID 3620 wrote to memory of 2308	3620	PlagueByKitty.exe	78
PID 3620 wrote to memory of 5100	3620	PlagueByKitty.exe	81
PID 3620 wrote to memory of 5100	3620	PlagueByKitty.exe	81
PID 3620 wrote to memory of 3364	3620	PlagueByKitty.exe	83
PID 3620 wrote to memory of 3364	3620	PlagueByKitty.exe	83
PID 3620 wrote to memory of 3680	3620	PlagueByKitty.exe	85
PID 3620 wrote to memory of 3680	3620	PlagueByKitty.exe	85
PID 3620 wrote to memory of 4676	3620	PlagueByKitty.exe	87
PID 3620 wrote to memory of 4676	3620	PlagueByKitty.exe	87
PID 3620 wrote to memory of 4996	3620	PlagueByKitty.exe	89
PID 3620 wrote to memory of 4996	3620	PlagueByKitty.exe	89
PID 3620 wrote to memory of 1660	3620	PlagueByKitty.exe	91
PID 3620 wrote to memory of 1660	3620	PlagueByKitty.exe	91
PID 3620 wrote to memory of 1960	3620	PlagueByKitty.exe	93
PID 3620 wrote to memory of 1960	3620	PlagueByKitty.exe	93
PID 3620 wrote to memory of 3536	3620	PlagueByKitty.exe	95
PID 3620 wrote to memory of 3536	3620	PlagueByKitty.exe	95
PID 3620 wrote to memory of 2128	3620	PlagueByKitty.exe	97
PID 3620 wrote to memory of 2128	3620	PlagueByKitty.exe	97
PID 3620 wrote to memory of 3056	3620	PlagueByKitty.exe	99
PID 3620 wrote to memory of 3056	3620	PlagueByKitty.exe	99
PID 3620 wrote to memory of 3196	3620	PlagueByKitty.exe	101
PID 3620 wrote to memory of 3196	3620	PlagueByKitty.exe	101
PID 3196 wrote to memory of 1796	3196	cmd.exe	103
PID 3196 wrote to memory of 1796	3196	cmd.exe	103

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
5100	attrib.exe

C:\Users\Admin\AppData\Local\Temp\PlagueByKitty.exe
"C:\Users\Admin\AppData\Local\Temp\PlagueByKitty.exe"
1⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3620
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2308
- C:\Windows\SYSTEM32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\PlagueByKitty.exe"
  2⤵
  - Views/modifies file attributes
  PID:5100
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\PlagueByKitty.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3364
- 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:3680
- 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:4676
- 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:4996
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1660
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:1960
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:3536
- 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:2128
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:3056
- C:\Windows\SYSTEM32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\PlagueByKitty.exe" && pause
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3196
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - Runs ping.exe
    PID:1796

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\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log

Filesize
2KB

MD5
437395ef86850fbff98c12dff89eb621

SHA1
9cec41e230fa9839de1e5c42b7dbc8b31df0d69c

SHA256
9c39f3e1ee674a289926fddddfc5549740c488686ec6513f53848a225c192ba6

SHA512
bc669893f5c97e80a62fc3d15383ed7c62ffc86bc986401735903019bb96a5f13e4d0f6356baa2021267503a4eb62681e58e28fcff435350e83aa425fa76cd64

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

Filesize
944B

MD5
25fdee90fce7b0b96dc2ee97ec66834a

SHA1
c32a6f1e3b1033bec69a5a41de255c98944dcdc9

SHA256
c433a9b0345ba06be0b2acc2fcb9d689f81837ada86b6fee2fb2b4b838d1ea6c

SHA512
b76230cb1cee4dc3e434bc49b239525f4ea51f449b0587b828a8888c6ff54d26c5cd16219934dbe44d4f84057d8e77bbc458d71e55b10d79ef8d0eda74e7399d

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

Filesize
948B

MD5
db898457e05416e5098e24d21e280c05

SHA1
1b55bb4b5b7f6141b3664b7799c09beb97b19d63

SHA256
3c01e284788898cc05b5fd95ecb0ab3194249e66c1d909b328fe6641b76febab

SHA512
2cd8a2c160ce78348c55590c3e1fd627728e9833988b47f839eef5b43ac637c23a2900825ddab9c1bc31b15b4b4615fbbf6e63c41cfdf337b561645d8ad5059b

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

Filesize
1KB

MD5
7332074ae2b01262736b6fbd9e100dac

SHA1
22f992165065107cc9417fa4117240d84414a13c

SHA256
baea84fda6c1f13090b8cbd91c920848946f10ce155ef31a1df4cd453ee7e4aa

SHA512
4ae6f0e012c31ac1fc2ff4a8877ce2b4667c45b6e651de798318a39a2b6fd39a6f72dffa8b0b89b7a045a27d724d195656faa25a9fec79b22f37ddebb5d22da2

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

Filesize
1KB

MD5
337edf872320659358e7ff5657a9c0e6

SHA1
9cd25be8cd93ca1066d3d838659b3fe69756142f

SHA256
a373ef2d1ddd93760dba72bd8b33c5435a3e40b73db738dab04c16d579990d41

SHA512
1e2672c5cc0c971c558064d9b174a5cd28e9d22c6cc23ce65d023ef4b16b83b9f260f4a759ad3e3eb3a17b24043107dd7e786b509f02366ad2a05b4450af9deb

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_30oaskto.24z.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/3364-12-0x00007FFB7B2A0000-0x00007FFB7BD62000-memory.dmp

Filesize
10.8MB

Download
memory/3364-13-0x00007FFB7B2A0000-0x00007FFB7BD62000-memory.dmp

Filesize
10.8MB

Download
memory/3364-14-0x00007FFB7B2A0000-0x00007FFB7BD62000-memory.dmp

Filesize
10.8MB

Download
memory/3364-17-0x00007FFB7B2A0000-0x00007FFB7BD62000-memory.dmp

Filesize
10.8MB

Download
memory/3364-11-0x00000255B5970000-0x00000255B5992000-memory.dmp

Filesize
136KB

Download
memory/3620-32-0x000001C6F0E30000-0x000001C6F0E80000-memory.dmp

Filesize
320KB

Download
memory/3620-31-0x000001C6F0DB0000-0x000001C6F0E26000-memory.dmp

Filesize
472KB

Download
memory/3620-33-0x000001C6F0D40000-0x000001C6F0D5E000-memory.dmp

Filesize
120KB

Download
memory/3620-1-0x000001C6EE560000-0x000001C6EE5E2000-memory.dmp

Filesize
520KB

Download
memory/3620-0-0x00007FFB7B2A3000-0x00007FFB7B2A5000-memory.dmp

Filesize
8KB

Download
memory/3620-64-0x000001C6F02D0000-0x000001C6F02DA000-memory.dmp

Filesize
40KB

Download
memory/3620-65-0x000001C6F0EC0000-0x000001C6F0ED2000-memory.dmp

Filesize
72KB

Download
memory/3620-2-0x00007FFB7B2A0000-0x00007FFB7BD62000-memory.dmp

Filesize
10.8MB

Download
memory/3620-82-0x00007FFB7B2A0000-0x00007FFB7BD62000-memory.dmp

Filesize
10.8MB

Download