umbral | 5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686

Analysis

max time kernel
138s
max time network
125s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
28/08/2024, 15:07

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General

Target

5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe
Size

229KB
MD5

eabe2a81aa3dabab25e49ee4b36ce075
SHA1

f55b6298f0a8330d90d39e20a73adb2e828dfd1c
SHA256

5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686
SHA512

9688119150d3a466d9a12bfc55933d367104747a2cf319467a78dfcf975361c9e2727f76efe380db9d0c92c39dc4b0241bfb444e965e92720c9edcf42c1d18fe
SSDEEP

6144:lloZM+rIkd8g+EtXHkv/iD4Wn0IZHMgPou35EwFyov28e1mpi:noZtL+EP8Wn0IZHMgPou35EwFm1

Score

10^/10

umbral credential_access discovery execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral2/memory/2256-1-0x000001AD48650000-0x000001AD48690000-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
4856	powershell.exe
4808	powershell.exe
4628	powershell.exe
232	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.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
29	discord.com
30	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
16	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
2808	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
2504	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
2256	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe
4856	powershell.exe
4856	powershell.exe
4808	powershell.exe
4808	powershell.exe
4628	powershell.exe
4628	powershell.exe
740	powershell.exe
740	powershell.exe
232	powershell.exe
232	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2256	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe
Token: SeIncreaseQuotaPrivilege	4400	wmic.exe
Token: SeSecurityPrivilege	4400	wmic.exe
Token: SeTakeOwnershipPrivilege	4400	wmic.exe
Token: SeLoadDriverPrivilege	4400	wmic.exe
Token: SeSystemProfilePrivilege	4400	wmic.exe
Token: SeSystemtimePrivilege	4400	wmic.exe
Token: SeProfSingleProcessPrivilege	4400	wmic.exe
Token: SeIncBasePriorityPrivilege	4400	wmic.exe
Token: SeCreatePagefilePrivilege	4400	wmic.exe
Token: SeBackupPrivilege	4400	wmic.exe
Token: SeRestorePrivilege	4400	wmic.exe
Token: SeShutdownPrivilege	4400	wmic.exe
Token: SeDebugPrivilege	4400	wmic.exe
Token: SeSystemEnvironmentPrivilege	4400	wmic.exe
Token: SeRemoteShutdownPrivilege	4400	wmic.exe
Token: SeUndockPrivilege	4400	wmic.exe
Token: SeManageVolumePrivilege	4400	wmic.exe
Token: 33	4400	wmic.exe
Token: 34	4400	wmic.exe
Token: 35	4400	wmic.exe
Token: 36	4400	wmic.exe
Token: SeIncreaseQuotaPrivilege	4400	wmic.exe
Token: SeSecurityPrivilege	4400	wmic.exe
Token: SeTakeOwnershipPrivilege	4400	wmic.exe
Token: SeLoadDriverPrivilege	4400	wmic.exe
Token: SeSystemProfilePrivilege	4400	wmic.exe
Token: SeSystemtimePrivilege	4400	wmic.exe
Token: SeProfSingleProcessPrivilege	4400	wmic.exe
Token: SeIncBasePriorityPrivilege	4400	wmic.exe
Token: SeCreatePagefilePrivilege	4400	wmic.exe
Token: SeBackupPrivilege	4400	wmic.exe
Token: SeRestorePrivilege	4400	wmic.exe
Token: SeShutdownPrivilege	4400	wmic.exe
Token: SeDebugPrivilege	4400	wmic.exe
Token: SeSystemEnvironmentPrivilege	4400	wmic.exe
Token: SeRemoteShutdownPrivilege	4400	wmic.exe
Token: SeUndockPrivilege	4400	wmic.exe
Token: SeManageVolumePrivilege	4400	wmic.exe
Token: 33	4400	wmic.exe
Token: 34	4400	wmic.exe
Token: 35	4400	wmic.exe
Token: 36	4400	wmic.exe
Token: SeDebugPrivilege	4856	powershell.exe
Token: SeDebugPrivilege	4808	powershell.exe
Token: SeDebugPrivilege	4628	powershell.exe
Token: SeDebugPrivilege	740	powershell.exe
Token: SeIncreaseQuotaPrivilege	2992	wmic.exe
Token: SeSecurityPrivilege	2992	wmic.exe
Token: SeTakeOwnershipPrivilege	2992	wmic.exe
Token: SeLoadDriverPrivilege	2992	wmic.exe
Token: SeSystemProfilePrivilege	2992	wmic.exe
Token: SeSystemtimePrivilege	2992	wmic.exe
Token: SeProfSingleProcessPrivilege	2992	wmic.exe
Token: SeIncBasePriorityPrivilege	2992	wmic.exe
Token: SeCreatePagefilePrivilege	2992	wmic.exe
Token: SeBackupPrivilege	2992	wmic.exe
Token: SeRestorePrivilege	2992	wmic.exe
Token: SeShutdownPrivilege	2992	wmic.exe
Token: SeDebugPrivilege	2992	wmic.exe
Token: SeSystemEnvironmentPrivilege	2992	wmic.exe
Token: SeRemoteShutdownPrivilege	2992	wmic.exe
Token: SeUndockPrivilege	2992	wmic.exe
Token: SeManageVolumePrivilege	2992	wmic.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 2256 wrote to memory of 4400	2256	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	87
PID 2256 wrote to memory of 4400	2256	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	87
PID 2256 wrote to memory of 2408	2256	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	90
PID 2256 wrote to memory of 2408	2256	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	90
PID 2256 wrote to memory of 4856	2256	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	92
PID 2256 wrote to memory of 4856	2256	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	92
PID 2256 wrote to memory of 4808	2256	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	94
PID 2256 wrote to memory of 4808	2256	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	94
PID 2256 wrote to memory of 4628	2256	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	96
PID 2256 wrote to memory of 4628	2256	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	96
PID 2256 wrote to memory of 740	2256	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	98
PID 2256 wrote to memory of 740	2256	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	98
PID 2256 wrote to memory of 2992	2256	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	100
PID 2256 wrote to memory of 2992	2256	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	100
PID 2256 wrote to memory of 5096	2256	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	102
PID 2256 wrote to memory of 5096	2256	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	102
PID 2256 wrote to memory of 3292	2256	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	104
PID 2256 wrote to memory of 3292	2256	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	104
PID 2256 wrote to memory of 232	2256	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	106
PID 2256 wrote to memory of 232	2256	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	106
PID 2256 wrote to memory of 2504	2256	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	108
PID 2256 wrote to memory of 2504	2256	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	108
PID 2256 wrote to memory of 2808	2256	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	113
PID 2256 wrote to memory of 2808	2256	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	113
PID 2808 wrote to memory of 2328	2808	cmd.exe	115
PID 2808 wrote to memory of 2328	2808	cmd.exe	115

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
2408	attrib.exe

C:\Users\Admin\AppData\Local\Temp\5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe
"C:\Users\Admin\AppData\Local\Temp\5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe"
1⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2256
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:4400
- C:\Windows\SYSTEM32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe"
  2⤵
  - Views/modifies file attributes
  PID:2408
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4856
- 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:4808
- 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:4628
- 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:740
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2992
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:5096
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:3292
- 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:232
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:2504
- C:\Windows\SYSTEM32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe" && pause
  2⤵
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:2808
- - 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

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
59d97011e091004eaffb9816aa0b9abd

SHA1
1602a56b01dd4b7c577ca27d3117e4bcc1aa657b

SHA256
18f381e0db020a763b8c515c346ef58679ab9c403267eacfef5359e272f7e71d

SHA512
d9ca49c1a17580981e2c1a50d73c0eecaa7a62f8514741512172e395af2a3d80aeb0f71c58bc7f52c18246d57ba67af09b6bff4776877d6cc6f0245c30e092d6

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

Filesize
948B

MD5
5b859738a0051153041cf8b0e1a708a1

SHA1
852c93d578c870f322037882b1f3eb6ea86b97ae

SHA256
522952e2d9da87f01ec7b5822879b0dae00586a204a17020f1e52c63a855fed9

SHA512
b9e5fe08d45c3deed76461a1d5ddb69896e9e8f37f46c0fdeaa463c60c607978fa6c7abe8fbc539eb77b13c38c7ecb428d6c6b983fd6c057081f7978bb3b76b5

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

Filesize
1KB

MD5
d3235ed022a42ec4338123ab87144afa

SHA1
5058608bc0deb720a585a2304a8f7cf63a50a315

SHA256
10663f5a1cb0afe5578f61ebaae2aafb363544e47b48521f9c23be9e6e431b27

SHA512
236761b7c68feca8bd62cba90cff0b25fac5613837aaa5d29ae823ace8b06a2057553cf7e72b11ccc59b6c289e471ca1bbac1a880aef5e2868875371a17c1abf

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

Filesize
1KB

MD5
45ad40f012b09e141955482368549640

SHA1
3f9cd15875c1e397c3b2b5592805577ae88a96cb

SHA256
ea3b59172f1a33677f9cb3843fb4d6093b806d3a7cf2f3c6d4692f5421f656ce

SHA512
3de08f8affca1c1450088f560776cf3d65146cadac43c06eb922c7b3cea436e519966cf38458303ffeb1a58c53f8952cffda6c34216fda7594e014b516e83b33

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_karpkdm0.20m.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/2256-71-0x000001AD4A510000-0x000001AD4A51A000-memory.dmp

Filesize
40KB

Download
memory/2256-35-0x000001AD4A3E0000-0x000001AD4A3FE000-memory.dmp

Filesize
120KB

Download
memory/2256-92-0x00007FFDBC990000-0x00007FFDBD451000-memory.dmp

Filesize
10.8MB

Download
memory/2256-88-0x00007FFDBC990000-0x00007FFDBD451000-memory.dmp

Filesize
10.8MB

Download
memory/2256-2-0x00007FFDBC990000-0x00007FFDBD451000-memory.dmp

Filesize
10.8MB

Download
memory/2256-33-0x000001AD4A490000-0x000001AD4A506000-memory.dmp

Filesize
472KB

Download
memory/2256-34-0x000001AD4A410000-0x000001AD4A460000-memory.dmp

Filesize
320KB

Download
memory/2256-87-0x00007FFDBC993000-0x00007FFDBC995000-memory.dmp

Filesize
8KB

Download
memory/2256-0-0x00007FFDBC993000-0x00007FFDBC995000-memory.dmp

Filesize
8KB

Download
memory/2256-1-0x000001AD48650000-0x000001AD48690000-memory.dmp

Filesize
256KB

Download
memory/2256-72-0x000001AD4A540000-0x000001AD4A552000-memory.dmp

Filesize
72KB

Download
memory/4856-14-0x00007FFDBC990000-0x00007FFDBD451000-memory.dmp

Filesize
10.8MB

Download
memory/4856-12-0x00007FFDBC990000-0x00007FFDBD451000-memory.dmp

Filesize
10.8MB

Download
memory/4856-15-0x00007FFDBC990000-0x00007FFDBD451000-memory.dmp

Filesize
10.8MB

Download
memory/4856-13-0x00000211C4700000-0x00000211C4722000-memory.dmp

Filesize
136KB

Download
memory/4856-18-0x00007FFDBC990000-0x00007FFDBD451000-memory.dmp

Filesize
10.8MB

Download