umbral | 92b29151b184cbbc1227cdf1fec858cb8145d5f03516b9199dba669dae30f6b8

Analysis

max time kernel
91s
max time network
99s
platform
windows11-21h2_x64
resource
win11-20240802-en
resource tags

arch:x64arch:x86image:win11-20240802-enlocale:en-usos:windows11-21h2-x64system
submitted
17-08-2024 17:22

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General

Target

Katana Cod/KatanaBeta.exe
Size

229KB
MD5

f6f744441dfded289e9f80124b42cd7b
SHA1

e097b009936023a9f7672bc1fb956ad45a07e9ad
SHA256

a6691d55b146c79be7721277050c0f6c11130fa826cda7d78a4d529afefe3221
SHA512

4cfec12b594cad710954dc25dee05b185c4917640d6ccd3778487a40ee73b0d08bc7cdd8787b2a9d331783d3de9d52535f8ed73b82a2de22331e4b81b49b1e6d
SSDEEP

6144:FloZM3fsXtioRkts/cnnK6cMl8Eru0ad1+t7mEl5Q77b8e1mCSni:HoZ1tlRk83Ml8Eru0ad1+t7mEl5QTQi

Score

10^/10

umbral credential_access discovery execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/4916-1-0x00000232451C0000-0x0000023245200000-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
2092	powershell.exe
5040	powershell.exe
2668	powershell.exe
1424	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	KatanaBeta.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

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
4764	cmd.exe
2328	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
4852	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2328	PING.EXE

Suspicious behavior: EnumeratesProcesses 11 IoCs

pid	Process
4916	KatanaBeta.exe
2092	powershell.exe
2092	powershell.exe
5040	powershell.exe
5040	powershell.exe
2668	powershell.exe
2668	powershell.exe
776	powershell.exe
776	powershell.exe
1424	powershell.exe
1424	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	4916	KatanaBeta.exe
Token: SeIncreaseQuotaPrivilege	4864	wmic.exe
Token: SeSecurityPrivilege	4864	wmic.exe
Token: SeTakeOwnershipPrivilege	4864	wmic.exe
Token: SeLoadDriverPrivilege	4864	wmic.exe
Token: SeSystemProfilePrivilege	4864	wmic.exe
Token: SeSystemtimePrivilege	4864	wmic.exe
Token: SeProfSingleProcessPrivilege	4864	wmic.exe
Token: SeIncBasePriorityPrivilege	4864	wmic.exe
Token: SeCreatePagefilePrivilege	4864	wmic.exe
Token: SeBackupPrivilege	4864	wmic.exe
Token: SeRestorePrivilege	4864	wmic.exe
Token: SeShutdownPrivilege	4864	wmic.exe
Token: SeDebugPrivilege	4864	wmic.exe
Token: SeSystemEnvironmentPrivilege	4864	wmic.exe
Token: SeRemoteShutdownPrivilege	4864	wmic.exe
Token: SeUndockPrivilege	4864	wmic.exe
Token: SeManageVolumePrivilege	4864	wmic.exe
Token: 33	4864	wmic.exe
Token: 34	4864	wmic.exe
Token: 35	4864	wmic.exe
Token: 36	4864	wmic.exe
Token: SeIncreaseQuotaPrivilege	4864	wmic.exe
Token: SeSecurityPrivilege	4864	wmic.exe
Token: SeTakeOwnershipPrivilege	4864	wmic.exe
Token: SeLoadDriverPrivilege	4864	wmic.exe
Token: SeSystemProfilePrivilege	4864	wmic.exe
Token: SeSystemtimePrivilege	4864	wmic.exe
Token: SeProfSingleProcessPrivilege	4864	wmic.exe
Token: SeIncBasePriorityPrivilege	4864	wmic.exe
Token: SeCreatePagefilePrivilege	4864	wmic.exe
Token: SeBackupPrivilege	4864	wmic.exe
Token: SeRestorePrivilege	4864	wmic.exe
Token: SeShutdownPrivilege	4864	wmic.exe
Token: SeDebugPrivilege	4864	wmic.exe
Token: SeSystemEnvironmentPrivilege	4864	wmic.exe
Token: SeRemoteShutdownPrivilege	4864	wmic.exe
Token: SeUndockPrivilege	4864	wmic.exe
Token: SeManageVolumePrivilege	4864	wmic.exe
Token: 33	4864	wmic.exe
Token: 34	4864	wmic.exe
Token: 35	4864	wmic.exe
Token: 36	4864	wmic.exe
Token: SeDebugPrivilege	2092	powershell.exe
Token: SeDebugPrivilege	5040	powershell.exe
Token: SeDebugPrivilege	2668	powershell.exe
Token: SeDebugPrivilege	776	powershell.exe
Token: SeIncreaseQuotaPrivilege	2184	wmic.exe
Token: SeSecurityPrivilege	2184	wmic.exe
Token: SeTakeOwnershipPrivilege	2184	wmic.exe
Token: SeLoadDriverPrivilege	2184	wmic.exe
Token: SeSystemProfilePrivilege	2184	wmic.exe
Token: SeSystemtimePrivilege	2184	wmic.exe
Token: SeProfSingleProcessPrivilege	2184	wmic.exe
Token: SeIncBasePriorityPrivilege	2184	wmic.exe
Token: SeCreatePagefilePrivilege	2184	wmic.exe
Token: SeBackupPrivilege	2184	wmic.exe
Token: SeRestorePrivilege	2184	wmic.exe
Token: SeShutdownPrivilege	2184	wmic.exe
Token: SeDebugPrivilege	2184	wmic.exe
Token: SeSystemEnvironmentPrivilege	2184	wmic.exe
Token: SeRemoteShutdownPrivilege	2184	wmic.exe
Token: SeUndockPrivilege	2184	wmic.exe
Token: SeManageVolumePrivilege	2184	wmic.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 4916 wrote to memory of 4864	4916	KatanaBeta.exe	79
PID 4916 wrote to memory of 4864	4916	KatanaBeta.exe	79
PID 4916 wrote to memory of 2616	4916	KatanaBeta.exe	82
PID 4916 wrote to memory of 2616	4916	KatanaBeta.exe	82
PID 4916 wrote to memory of 2092	4916	KatanaBeta.exe	84
PID 4916 wrote to memory of 2092	4916	KatanaBeta.exe	84
PID 4916 wrote to memory of 5040	4916	KatanaBeta.exe	86
PID 4916 wrote to memory of 5040	4916	KatanaBeta.exe	86
PID 4916 wrote to memory of 2668	4916	KatanaBeta.exe	88
PID 4916 wrote to memory of 2668	4916	KatanaBeta.exe	88
PID 4916 wrote to memory of 776	4916	KatanaBeta.exe	90
PID 4916 wrote to memory of 776	4916	KatanaBeta.exe	90
PID 4916 wrote to memory of 2184	4916	KatanaBeta.exe	92
PID 4916 wrote to memory of 2184	4916	KatanaBeta.exe	92
PID 4916 wrote to memory of 2416	4916	KatanaBeta.exe	94
PID 4916 wrote to memory of 2416	4916	KatanaBeta.exe	94
PID 4916 wrote to memory of 2988	4916	KatanaBeta.exe	96
PID 4916 wrote to memory of 2988	4916	KatanaBeta.exe	96
PID 4916 wrote to memory of 1424	4916	KatanaBeta.exe	98
PID 4916 wrote to memory of 1424	4916	KatanaBeta.exe	98
PID 4916 wrote to memory of 4852	4916	KatanaBeta.exe	100
PID 4916 wrote to memory of 4852	4916	KatanaBeta.exe	100
PID 4916 wrote to memory of 4764	4916	KatanaBeta.exe	102
PID 4916 wrote to memory of 4764	4916	KatanaBeta.exe	102
PID 4764 wrote to memory of 2328	4764	cmd.exe	104
PID 4764 wrote to memory of 2328	4764	cmd.exe	104

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
2616	attrib.exe

C:\Users\Admin\AppData\Local\Temp\Katana Cod\KatanaBeta.exe
"C:\Users\Admin\AppData\Local\Temp\Katana Cod\KatanaBeta.exe"
1⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4916
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:4864
- C:\Windows\SYSTEM32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\Katana Cod\KatanaBeta.exe"
  2⤵
  - Views/modifies file attributes
  PID:2616
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\Katana Cod\KatanaBeta.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2092
- 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:5040
- 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:2668
- 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:776
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2184
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:2416
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:2988
- 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:1424
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:4852
- C:\Windows\SYSTEM32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\Katana Cod\KatanaBeta.exe" && pause
  2⤵
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:4764
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:2328

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

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
a339f970a2431f0c48d959fec83e85f5

SHA1
d0bcf4201a3df5680a1a697ab345f825479bcf02

SHA256
2e38d54c1a7d64923edcdee545082f96f99388c89cd5b12f34c1743e3adea65c

SHA512
4907a37d00c8bf7c04e3f16ddae952f8d8d73ffb762e964ae51c99f30bbd8719ada84223457cc7d715a9be100575c06f1638bbc6edeb292f7aa6b561a5927581

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
6ca67a1a64ff4dd3f09a2393fccba8fa

SHA1
906350e7db31efc71679bbdbbcf1133aa2d31c1d

SHA256
6bc103c2e75b013034c77bb204ccbe43c365e9b6cb1697b9b5a1e20dda43427e

SHA512
4d1d3d52107b2eb2faf6918d0559a08acbe89b6a889f6300c55742d91f596a6764c637fc386c80ecbc434d0496ee83f243054c66b9eeb7adef4b2093e932b066

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_dgxg1t2n.jwv.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/2092-4-0x00007FFAA6C30000-0x00007FFAA76F2000-memory.dmp

Filesize
10.8MB

Download
memory/2092-5-0x00007FFAA6C30000-0x00007FFAA76F2000-memory.dmp

Filesize
10.8MB

Download
memory/2092-14-0x000001FA24AB0000-0x000001FA24AD2000-memory.dmp

Filesize
136KB

Download
memory/2092-17-0x00007FFAA6C30000-0x00007FFAA76F2000-memory.dmp

Filesize
10.8MB

Download
memory/2092-3-0x00007FFAA6C30000-0x00007FFAA76F2000-memory.dmp

Filesize
10.8MB

Download
memory/4916-32-0x0000023247080000-0x00000232470D0000-memory.dmp

Filesize
320KB

Download
memory/4916-31-0x000002325FA20000-0x000002325FA96000-memory.dmp

Filesize
472KB

Download
memory/4916-33-0x0000023246FE0000-0x0000023246FFE000-memory.dmp

Filesize
120KB

Download
memory/4916-1-0x00000232451C0000-0x0000023245200000-memory.dmp

Filesize
256KB

Download
memory/4916-0-0x00007FFAA6C33000-0x00007FFAA6C35000-memory.dmp

Filesize
8KB

Download
memory/4916-67-0x0000023247030000-0x000002324703A000-memory.dmp

Filesize
40KB

Download
memory/4916-68-0x0000023247060000-0x0000023247072000-memory.dmp

Filesize
72KB

Download
memory/4916-2-0x00007FFAA6C30000-0x00007FFAA76F2000-memory.dmp

Filesize
10.8MB

Download
memory/4916-82-0x00007FFAA6C33000-0x00007FFAA6C35000-memory.dmp

Filesize
8KB

Download
memory/4916-83-0x00007FFAA6C30000-0x00007FFAA76F2000-memory.dmp

Filesize
10.8MB

Download
memory/4916-87-0x00007FFAA6C30000-0x00007FFAA76F2000-memory.dmp

Filesize
10.8MB

Download