umbral | e9f53a85ccc391f38f8e61a652f9bc828ba30c5716cbb20a279997f47332739b

Analysis

max time kernel
19s
max time network
16s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
20-08-2024 03:42

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General

Target

rawr.exe
Size

227KB
MD5

a91205f6727f1c3b2f6383b90a364ed2
SHA1

f8ee36a1cffba6d008f3db793d73c661e798ab3b
SHA256

e9f53a85ccc391f38f8e61a652f9bc828ba30c5716cbb20a279997f47332739b
SHA512

feac77579bf151f91ec897a684929ad8b5897a575a45081b27d583c027343f96590a20ceae0662d11cb8ac2df36041ed2a7f9422662cfdcf4cf555649464c36c
SSDEEP

6144:eloZM+rIkd8g+EtXHkv/iD4x6ek8il92hDe8NhoNl+lj8e1m1i:IoZtL+EP8kek8il92hDe8Nhoapx

Score

10^/10

umbral credential_access discovery execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/2292-1-0x00000000011F0000-0x0000000001230000-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
3036	powershell.exe
2616	powershell.exe
2932	powershell.exe
1384	powershell.exe

Drops file in Drivers directory 1 IoCs

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

Deletes itself 1 IoCs

pid	Process
1624	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
10	discord.com
9	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
2844	PING.EXE
1624	cmd.exe

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
676	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2844	PING.EXE

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2292	rawr.exe
3036	powershell.exe
2616	powershell.exe
2932	powershell.exe
2492	powershell.exe
1384	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2292	rawr.exe
Token: SeIncreaseQuotaPrivilege	2420	wmic.exe
Token: SeSecurityPrivilege	2420	wmic.exe
Token: SeTakeOwnershipPrivilege	2420	wmic.exe
Token: SeLoadDriverPrivilege	2420	wmic.exe
Token: SeSystemProfilePrivilege	2420	wmic.exe
Token: SeSystemtimePrivilege	2420	wmic.exe
Token: SeProfSingleProcessPrivilege	2420	wmic.exe
Token: SeIncBasePriorityPrivilege	2420	wmic.exe
Token: SeCreatePagefilePrivilege	2420	wmic.exe
Token: SeBackupPrivilege	2420	wmic.exe
Token: SeRestorePrivilege	2420	wmic.exe
Token: SeShutdownPrivilege	2420	wmic.exe
Token: SeDebugPrivilege	2420	wmic.exe
Token: SeSystemEnvironmentPrivilege	2420	wmic.exe
Token: SeRemoteShutdownPrivilege	2420	wmic.exe
Token: SeUndockPrivilege	2420	wmic.exe
Token: SeManageVolumePrivilege	2420	wmic.exe
Token: 33	2420	wmic.exe
Token: 34	2420	wmic.exe
Token: 35	2420	wmic.exe
Token: SeIncreaseQuotaPrivilege	2420	wmic.exe
Token: SeSecurityPrivilege	2420	wmic.exe
Token: SeTakeOwnershipPrivilege	2420	wmic.exe
Token: SeLoadDriverPrivilege	2420	wmic.exe
Token: SeSystemProfilePrivilege	2420	wmic.exe
Token: SeSystemtimePrivilege	2420	wmic.exe
Token: SeProfSingleProcessPrivilege	2420	wmic.exe
Token: SeIncBasePriorityPrivilege	2420	wmic.exe
Token: SeCreatePagefilePrivilege	2420	wmic.exe
Token: SeBackupPrivilege	2420	wmic.exe
Token: SeRestorePrivilege	2420	wmic.exe
Token: SeShutdownPrivilege	2420	wmic.exe
Token: SeDebugPrivilege	2420	wmic.exe
Token: SeSystemEnvironmentPrivilege	2420	wmic.exe
Token: SeRemoteShutdownPrivilege	2420	wmic.exe
Token: SeUndockPrivilege	2420	wmic.exe
Token: SeManageVolumePrivilege	2420	wmic.exe
Token: 33	2420	wmic.exe
Token: 34	2420	wmic.exe
Token: 35	2420	wmic.exe
Token: SeDebugPrivilege	3036	powershell.exe
Token: SeDebugPrivilege	2616	powershell.exe
Token: SeDebugPrivilege	2932	powershell.exe
Token: SeDebugPrivilege	2492	powershell.exe
Token: SeIncreaseQuotaPrivilege	1844	wmic.exe
Token: SeSecurityPrivilege	1844	wmic.exe
Token: SeTakeOwnershipPrivilege	1844	wmic.exe
Token: SeLoadDriverPrivilege	1844	wmic.exe
Token: SeSystemProfilePrivilege	1844	wmic.exe
Token: SeSystemtimePrivilege	1844	wmic.exe
Token: SeProfSingleProcessPrivilege	1844	wmic.exe
Token: SeIncBasePriorityPrivilege	1844	wmic.exe
Token: SeCreatePagefilePrivilege	1844	wmic.exe
Token: SeBackupPrivilege	1844	wmic.exe
Token: SeRestorePrivilege	1844	wmic.exe
Token: SeShutdownPrivilege	1844	wmic.exe
Token: SeDebugPrivilege	1844	wmic.exe
Token: SeSystemEnvironmentPrivilege	1844	wmic.exe
Token: SeRemoteShutdownPrivilege	1844	wmic.exe
Token: SeUndockPrivilege	1844	wmic.exe
Token: SeManageVolumePrivilege	1844	wmic.exe
Token: 33	1844	wmic.exe
Token: 34	1844	wmic.exe

Suspicious use of WriteProcessMemory 39 IoCs

description	pid	Process	procid_target
PID 2292 wrote to memory of 2420	2292	rawr.exe	28
PID 2292 wrote to memory of 2420	2292	rawr.exe	28
PID 2292 wrote to memory of 2420	2292	rawr.exe	28
PID 2292 wrote to memory of 1792	2292	rawr.exe	31
PID 2292 wrote to memory of 1792	2292	rawr.exe	31
PID 2292 wrote to memory of 1792	2292	rawr.exe	31
PID 2292 wrote to memory of 3036	2292	rawr.exe	33
PID 2292 wrote to memory of 3036	2292	rawr.exe	33
PID 2292 wrote to memory of 3036	2292	rawr.exe	33
PID 2292 wrote to memory of 2616	2292	rawr.exe	35
PID 2292 wrote to memory of 2616	2292	rawr.exe	35
PID 2292 wrote to memory of 2616	2292	rawr.exe	35
PID 2292 wrote to memory of 2932	2292	rawr.exe	37
PID 2292 wrote to memory of 2932	2292	rawr.exe	37
PID 2292 wrote to memory of 2932	2292	rawr.exe	37
PID 2292 wrote to memory of 2492	2292	rawr.exe	39
PID 2292 wrote to memory of 2492	2292	rawr.exe	39
PID 2292 wrote to memory of 2492	2292	rawr.exe	39
PID 2292 wrote to memory of 1844	2292	rawr.exe	41
PID 2292 wrote to memory of 1844	2292	rawr.exe	41
PID 2292 wrote to memory of 1844	2292	rawr.exe	41
PID 2292 wrote to memory of 1968	2292	rawr.exe	43
PID 2292 wrote to memory of 1968	2292	rawr.exe	43
PID 2292 wrote to memory of 1968	2292	rawr.exe	43
PID 2292 wrote to memory of 1776	2292	rawr.exe	45
PID 2292 wrote to memory of 1776	2292	rawr.exe	45
PID 2292 wrote to memory of 1776	2292	rawr.exe	45
PID 2292 wrote to memory of 1384	2292	rawr.exe	47
PID 2292 wrote to memory of 1384	2292	rawr.exe	47
PID 2292 wrote to memory of 1384	2292	rawr.exe	47
PID 2292 wrote to memory of 676	2292	rawr.exe	49
PID 2292 wrote to memory of 676	2292	rawr.exe	49
PID 2292 wrote to memory of 676	2292	rawr.exe	49
PID 2292 wrote to memory of 1624	2292	rawr.exe	51
PID 2292 wrote to memory of 1624	2292	rawr.exe	51
PID 2292 wrote to memory of 1624	2292	rawr.exe	51
PID 1624 wrote to memory of 2844	1624	cmd.exe	53
PID 1624 wrote to memory of 2844	1624	cmd.exe	53
PID 1624 wrote to memory of 2844	1624	cmd.exe	53

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
1792	attrib.exe

C:\Users\Admin\AppData\Local\Temp\rawr.exe
"C:\Users\Admin\AppData\Local\Temp\rawr.exe"
1⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2292
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2420
- C:\Windows\system32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\rawr.exe"
  2⤵
  - Views/modifies file attributes
  PID:1792
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\rawr.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3036
- 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:2616
- 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:2932
- 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:2492
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1844
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:1968
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:1776
- 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:1384
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:676
- C:\Windows\system32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\rawr.exe" && pause
  2⤵
  - Deletes itself
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:1624
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:2844

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
4aaef19ca0680aa8ca3621cf9bea374d

SHA1
a39c0ab59c69c9f9c586bb4abcbc56d051340603

SHA256
a3d2855254583613f08b873caed10f01ab0f154907460d0796d04e0da5c5e836

SHA512
3c885c9145a3356d083f809f804abe6146d6eabc02af5ef0aaffbe20b430d02c1c3befb30b44b738e265e2d59afaaf1016aaf9e1323b346810f495a38c3cee99

Download Submit
memory/1384-42-0x0000000001E80000-0x0000000001E88000-memory.dmp

Filesize
32KB

Download
memory/2292-0-0x000007FEF55F3000-0x000007FEF55F4000-memory.dmp

Filesize
4KB

Download
memory/2292-1-0x00000000011F0000-0x0000000001230000-memory.dmp

Filesize
256KB

Download
memory/2292-2-0x000007FEF55F0000-0x000007FEF5FDC000-memory.dmp

Filesize
9.9MB

Download
memory/2292-46-0x000007FEF55F0000-0x000007FEF5FDC000-memory.dmp

Filesize
9.9MB

Download
memory/2616-14-0x000000001B550000-0x000000001B832000-memory.dmp

Filesize
2.9MB

Download
memory/2616-15-0x00000000028E0000-0x00000000028E8000-memory.dmp

Filesize
32KB

Download
memory/3036-7-0x000000001B7B0000-0x000000001BA92000-memory.dmp

Filesize
2.9MB

Download
memory/3036-8-0x0000000001D90000-0x0000000001D98000-memory.dmp

Filesize
32KB

Download