umbral | a8c74a05f574514ec74cb942ec0ff1d5380da648e145ba829dec4cc511ec4cd7

Analysis

max time kernel
16s
max time network
17s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
29-08-2024 01:54

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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
behavioral1/memory/3068-1-0x0000000000EC0000-0x0000000000F00000-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

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
2448	powershell.exe
2728	powershell.exe
292	powershell.exe
2868	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe

Deletes itself 1 IoCs

pid	Process
1828	cmd.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
9	discord.com
10	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
6	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
1828	cmd.exe
2072	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
2092	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2072	PING.EXE

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
3068	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe
2868	powershell.exe
2448	powershell.exe
2728	powershell.exe
1384	powershell.exe
292	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	3068	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe
Token: SeIncreaseQuotaPrivilege	2792	wmic.exe
Token: SeSecurityPrivilege	2792	wmic.exe
Token: SeTakeOwnershipPrivilege	2792	wmic.exe
Token: SeLoadDriverPrivilege	2792	wmic.exe
Token: SeSystemProfilePrivilege	2792	wmic.exe
Token: SeSystemtimePrivilege	2792	wmic.exe
Token: SeProfSingleProcessPrivilege	2792	wmic.exe
Token: SeIncBasePriorityPrivilege	2792	wmic.exe
Token: SeCreatePagefilePrivilege	2792	wmic.exe
Token: SeBackupPrivilege	2792	wmic.exe
Token: SeRestorePrivilege	2792	wmic.exe
Token: SeShutdownPrivilege	2792	wmic.exe
Token: SeDebugPrivilege	2792	wmic.exe
Token: SeSystemEnvironmentPrivilege	2792	wmic.exe
Token: SeRemoteShutdownPrivilege	2792	wmic.exe
Token: SeUndockPrivilege	2792	wmic.exe
Token: SeManageVolumePrivilege	2792	wmic.exe
Token: 33	2792	wmic.exe
Token: 34	2792	wmic.exe
Token: 35	2792	wmic.exe
Token: SeIncreaseQuotaPrivilege	2792	wmic.exe
Token: SeSecurityPrivilege	2792	wmic.exe
Token: SeTakeOwnershipPrivilege	2792	wmic.exe
Token: SeLoadDriverPrivilege	2792	wmic.exe
Token: SeSystemProfilePrivilege	2792	wmic.exe
Token: SeSystemtimePrivilege	2792	wmic.exe
Token: SeProfSingleProcessPrivilege	2792	wmic.exe
Token: SeIncBasePriorityPrivilege	2792	wmic.exe
Token: SeCreatePagefilePrivilege	2792	wmic.exe
Token: SeBackupPrivilege	2792	wmic.exe
Token: SeRestorePrivilege	2792	wmic.exe
Token: SeShutdownPrivilege	2792	wmic.exe
Token: SeDebugPrivilege	2792	wmic.exe
Token: SeSystemEnvironmentPrivilege	2792	wmic.exe
Token: SeRemoteShutdownPrivilege	2792	wmic.exe
Token: SeUndockPrivilege	2792	wmic.exe
Token: SeManageVolumePrivilege	2792	wmic.exe
Token: 33	2792	wmic.exe
Token: 34	2792	wmic.exe
Token: 35	2792	wmic.exe
Token: SeDebugPrivilege	2868	powershell.exe
Token: SeDebugPrivilege	2448	powershell.exe
Token: SeDebugPrivilege	2728	powershell.exe
Token: SeDebugPrivilege	1384	powershell.exe
Token: SeIncreaseQuotaPrivilege	1224	wmic.exe
Token: SeSecurityPrivilege	1224	wmic.exe
Token: SeTakeOwnershipPrivilege	1224	wmic.exe
Token: SeLoadDriverPrivilege	1224	wmic.exe
Token: SeSystemProfilePrivilege	1224	wmic.exe
Token: SeSystemtimePrivilege	1224	wmic.exe
Token: SeProfSingleProcessPrivilege	1224	wmic.exe
Token: SeIncBasePriorityPrivilege	1224	wmic.exe
Token: SeCreatePagefilePrivilege	1224	wmic.exe
Token: SeBackupPrivilege	1224	wmic.exe
Token: SeRestorePrivilege	1224	wmic.exe
Token: SeShutdownPrivilege	1224	wmic.exe
Token: SeDebugPrivilege	1224	wmic.exe
Token: SeSystemEnvironmentPrivilege	1224	wmic.exe
Token: SeRemoteShutdownPrivilege	1224	wmic.exe
Token: SeUndockPrivilege	1224	wmic.exe
Token: SeManageVolumePrivilege	1224	wmic.exe
Token: 33	1224	wmic.exe
Token: 34	1224	wmic.exe

Suspicious use of WriteProcessMemory 39 IoCs

description	pid	Process	procid_target
PID 3068 wrote to memory of 2792	3068	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	30
PID 3068 wrote to memory of 2792	3068	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	30
PID 3068 wrote to memory of 2792	3068	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	30
PID 3068 wrote to memory of 2800	3068	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	33
PID 3068 wrote to memory of 2800	3068	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	33
PID 3068 wrote to memory of 2800	3068	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	33
PID 3068 wrote to memory of 2868	3068	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	35
PID 3068 wrote to memory of 2868	3068	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	35
PID 3068 wrote to memory of 2868	3068	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	35
PID 3068 wrote to memory of 2448	3068	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	37
PID 3068 wrote to memory of 2448	3068	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	37
PID 3068 wrote to memory of 2448	3068	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	37
PID 3068 wrote to memory of 2728	3068	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	39
PID 3068 wrote to memory of 2728	3068	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	39
PID 3068 wrote to memory of 2728	3068	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	39
PID 3068 wrote to memory of 1384	3068	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	41
PID 3068 wrote to memory of 1384	3068	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	41
PID 3068 wrote to memory of 1384	3068	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	41
PID 3068 wrote to memory of 1224	3068	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	43
PID 3068 wrote to memory of 1224	3068	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	43
PID 3068 wrote to memory of 1224	3068	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	43
PID 3068 wrote to memory of 1932	3068	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	45
PID 3068 wrote to memory of 1932	3068	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	45
PID 3068 wrote to memory of 1932	3068	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	45
PID 3068 wrote to memory of 2984	3068	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	47
PID 3068 wrote to memory of 2984	3068	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	47
PID 3068 wrote to memory of 2984	3068	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	47
PID 3068 wrote to memory of 292	3068	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	49
PID 3068 wrote to memory of 292	3068	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	49
PID 3068 wrote to memory of 292	3068	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	49
PID 3068 wrote to memory of 2092	3068	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	51
PID 3068 wrote to memory of 2092	3068	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	51
PID 3068 wrote to memory of 2092	3068	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	51
PID 3068 wrote to memory of 1828	3068	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	53
PID 3068 wrote to memory of 1828	3068	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	53
PID 3068 wrote to memory of 1828	3068	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	53
PID 1828 wrote to memory of 2072	1828	cmd.exe	55
PID 1828 wrote to memory of 2072	1828	cmd.exe	55
PID 1828 wrote to memory of 2072	1828	cmd.exe	55

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
2800	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:3068
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2792
- C:\Windows\system32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe"
  2⤵
  - Views/modifies file attributes
  PID:2800
- 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:2868
- 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:2448
- 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:2728
- 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:1384
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1224
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:1932
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:2984
- 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:292
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:2092
- C:\Windows\system32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe" && pause
  2⤵
  - Deletes itself
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:1828
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:2072

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\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms

Filesize
7KB

MD5
da042b9dfda7486f9d9ebab6bfd638c6

SHA1
a4a12b5b4705b885c5b43998d78c44023031ab3a

SHA256
64b06c69a0fa8e13dd2add0fcd49755c113811fa4e9482965f80c87f2666adb3

SHA512
0d2a9334e15852dcec3527bd25eb291ee08c09e48d7d90f530db2fb0001f0b54b308ac748172b2087f5877db8a646e583a4b2b7350884317e087fe5eb8551e06

Download Submit
memory/292-42-0x0000000002340000-0x0000000002348000-memory.dmp

Filesize
32KB

Download
memory/2448-14-0x000000001B750000-0x000000001BA32000-memory.dmp

Filesize
2.9MB

Download
memory/2448-15-0x0000000000370000-0x0000000000378000-memory.dmp

Filesize
32KB

Download
memory/2868-7-0x000000001B580000-0x000000001B862000-memory.dmp

Filesize
2.9MB

Download
memory/2868-8-0x0000000002810000-0x0000000002818000-memory.dmp

Filesize
32KB

Download
memory/3068-0-0x000007FEF6473000-0x000007FEF6474000-memory.dmp

Filesize
4KB

Download
memory/3068-1-0x0000000000EC0000-0x0000000000F00000-memory.dmp

Filesize
256KB

Download
memory/3068-2-0x000007FEF6470000-0x000007FEF6E5C000-memory.dmp

Filesize
9.9MB

Download
memory/3068-46-0x000007FEF6470000-0x000007FEF6E5C000-memory.dmp

Filesize
9.9MB

Download