umbral | 72ee11a905ca278130f02397422b4cc4944851065ce0072f9888b70c5ad40f1e

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
06-08-2024 08:26

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General

Target

0x000f000000015c87-15.exe
Size

229KB
MD5

f48ef033300ec9fd3c77afff5c20e95f
SHA1

22d6125b980474b3f54937003a765cdd5352f9a8
SHA256

72ee11a905ca278130f02397422b4cc4944851065ce0072f9888b70c5ad40f1e
SHA512

847ee8cdb14879089c861168d6be90325304df490668a38447b37772423e6dab5e32a5df344ceb58410d3b24cf25cd7221e8768951e5aca14820996a1e8304bc
SSDEEP

6144:lloZM+rIkd8g+EtXHkv/iD4In5D4+ZRSy3q459cApb8e1m1i:noZtL+EP8In5D4+ZRSy3q459cEX

Score

10^/10

umbral credential_access discovery execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/1760-1-0x0000000001150000-0x0000000001190000-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
2808	powershell.exe
2280	powershell.exe
2372	powershell.exe
3064	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	0x000f000000015c87-15.exe

Deletes itself 1 IoCs

pid	Process
2248	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
7	discord.com
8	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
4	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
2176	PING.EXE
2248	cmd.exe

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
2532	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2176	PING.EXE

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
1760	0x000f000000015c87-15.exe
3064	powershell.exe
2808	powershell.exe
2280	powershell.exe
1968	powershell.exe
2372	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	1760	0x000f000000015c87-15.exe
Token: SeIncreaseQuotaPrivilege	2936	wmic.exe
Token: SeSecurityPrivilege	2936	wmic.exe
Token: SeTakeOwnershipPrivilege	2936	wmic.exe
Token: SeLoadDriverPrivilege	2936	wmic.exe
Token: SeSystemProfilePrivilege	2936	wmic.exe
Token: SeSystemtimePrivilege	2936	wmic.exe
Token: SeProfSingleProcessPrivilege	2936	wmic.exe
Token: SeIncBasePriorityPrivilege	2936	wmic.exe
Token: SeCreatePagefilePrivilege	2936	wmic.exe
Token: SeBackupPrivilege	2936	wmic.exe
Token: SeRestorePrivilege	2936	wmic.exe
Token: SeShutdownPrivilege	2936	wmic.exe
Token: SeDebugPrivilege	2936	wmic.exe
Token: SeSystemEnvironmentPrivilege	2936	wmic.exe
Token: SeRemoteShutdownPrivilege	2936	wmic.exe
Token: SeUndockPrivilege	2936	wmic.exe
Token: SeManageVolumePrivilege	2936	wmic.exe
Token: 33	2936	wmic.exe
Token: 34	2936	wmic.exe
Token: 35	2936	wmic.exe
Token: SeIncreaseQuotaPrivilege	2936	wmic.exe
Token: SeSecurityPrivilege	2936	wmic.exe
Token: SeTakeOwnershipPrivilege	2936	wmic.exe
Token: SeLoadDriverPrivilege	2936	wmic.exe
Token: SeSystemProfilePrivilege	2936	wmic.exe
Token: SeSystemtimePrivilege	2936	wmic.exe
Token: SeProfSingleProcessPrivilege	2936	wmic.exe
Token: SeIncBasePriorityPrivilege	2936	wmic.exe
Token: SeCreatePagefilePrivilege	2936	wmic.exe
Token: SeBackupPrivilege	2936	wmic.exe
Token: SeRestorePrivilege	2936	wmic.exe
Token: SeShutdownPrivilege	2936	wmic.exe
Token: SeDebugPrivilege	2936	wmic.exe
Token: SeSystemEnvironmentPrivilege	2936	wmic.exe
Token: SeRemoteShutdownPrivilege	2936	wmic.exe
Token: SeUndockPrivilege	2936	wmic.exe
Token: SeManageVolumePrivilege	2936	wmic.exe
Token: 33	2936	wmic.exe
Token: 34	2936	wmic.exe
Token: 35	2936	wmic.exe
Token: SeDebugPrivilege	3064	powershell.exe
Token: SeDebugPrivilege	2808	powershell.exe
Token: SeDebugPrivilege	2280	powershell.exe
Token: SeDebugPrivilege	1968	powershell.exe
Token: SeIncreaseQuotaPrivilege	1868	wmic.exe
Token: SeSecurityPrivilege	1868	wmic.exe
Token: SeTakeOwnershipPrivilege	1868	wmic.exe
Token: SeLoadDriverPrivilege	1868	wmic.exe
Token: SeSystemProfilePrivilege	1868	wmic.exe
Token: SeSystemtimePrivilege	1868	wmic.exe
Token: SeProfSingleProcessPrivilege	1868	wmic.exe
Token: SeIncBasePriorityPrivilege	1868	wmic.exe
Token: SeCreatePagefilePrivilege	1868	wmic.exe
Token: SeBackupPrivilege	1868	wmic.exe
Token: SeRestorePrivilege	1868	wmic.exe
Token: SeShutdownPrivilege	1868	wmic.exe
Token: SeDebugPrivilege	1868	wmic.exe
Token: SeSystemEnvironmentPrivilege	1868	wmic.exe
Token: SeRemoteShutdownPrivilege	1868	wmic.exe
Token: SeUndockPrivilege	1868	wmic.exe
Token: SeManageVolumePrivilege	1868	wmic.exe
Token: 33	1868	wmic.exe
Token: 34	1868	wmic.exe

Suspicious use of WriteProcessMemory 39 IoCs

description	pid	Process	procid_target
PID 1760 wrote to memory of 2936	1760	0x000f000000015c87-15.exe	30
PID 1760 wrote to memory of 2936	1760	0x000f000000015c87-15.exe	30
PID 1760 wrote to memory of 2936	1760	0x000f000000015c87-15.exe	30
PID 1760 wrote to memory of 2704	1760	0x000f000000015c87-15.exe	33
PID 1760 wrote to memory of 2704	1760	0x000f000000015c87-15.exe	33
PID 1760 wrote to memory of 2704	1760	0x000f000000015c87-15.exe	33
PID 1760 wrote to memory of 3064	1760	0x000f000000015c87-15.exe	35
PID 1760 wrote to memory of 3064	1760	0x000f000000015c87-15.exe	35
PID 1760 wrote to memory of 3064	1760	0x000f000000015c87-15.exe	35
PID 1760 wrote to memory of 2808	1760	0x000f000000015c87-15.exe	37
PID 1760 wrote to memory of 2808	1760	0x000f000000015c87-15.exe	37
PID 1760 wrote to memory of 2808	1760	0x000f000000015c87-15.exe	37
PID 1760 wrote to memory of 2280	1760	0x000f000000015c87-15.exe	39
PID 1760 wrote to memory of 2280	1760	0x000f000000015c87-15.exe	39
PID 1760 wrote to memory of 2280	1760	0x000f000000015c87-15.exe	39
PID 1760 wrote to memory of 1968	1760	0x000f000000015c87-15.exe	41
PID 1760 wrote to memory of 1968	1760	0x000f000000015c87-15.exe	41
PID 1760 wrote to memory of 1968	1760	0x000f000000015c87-15.exe	41
PID 1760 wrote to memory of 1868	1760	0x000f000000015c87-15.exe	43
PID 1760 wrote to memory of 1868	1760	0x000f000000015c87-15.exe	43
PID 1760 wrote to memory of 1868	1760	0x000f000000015c87-15.exe	43
PID 1760 wrote to memory of 1272	1760	0x000f000000015c87-15.exe	45
PID 1760 wrote to memory of 1272	1760	0x000f000000015c87-15.exe	45
PID 1760 wrote to memory of 1272	1760	0x000f000000015c87-15.exe	45
PID 1760 wrote to memory of 2340	1760	0x000f000000015c87-15.exe	47
PID 1760 wrote to memory of 2340	1760	0x000f000000015c87-15.exe	47
PID 1760 wrote to memory of 2340	1760	0x000f000000015c87-15.exe	47
PID 1760 wrote to memory of 2372	1760	0x000f000000015c87-15.exe	49
PID 1760 wrote to memory of 2372	1760	0x000f000000015c87-15.exe	49
PID 1760 wrote to memory of 2372	1760	0x000f000000015c87-15.exe	49
PID 1760 wrote to memory of 2532	1760	0x000f000000015c87-15.exe	51
PID 1760 wrote to memory of 2532	1760	0x000f000000015c87-15.exe	51
PID 1760 wrote to memory of 2532	1760	0x000f000000015c87-15.exe	51
PID 1760 wrote to memory of 2248	1760	0x000f000000015c87-15.exe	53
PID 1760 wrote to memory of 2248	1760	0x000f000000015c87-15.exe	53
PID 1760 wrote to memory of 2248	1760	0x000f000000015c87-15.exe	53
PID 2248 wrote to memory of 2176	2248	cmd.exe	55
PID 2248 wrote to memory of 2176	2248	cmd.exe	55
PID 2248 wrote to memory of 2176	2248	cmd.exe	55

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
2704	attrib.exe

C:\Users\Admin\AppData\Local\Temp\0x000f000000015c87-15.exe
"C:\Users\Admin\AppData\Local\Temp\0x000f000000015c87-15.exe"
1⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1760
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2936
- C:\Windows\system32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\0x000f000000015c87-15.exe"
  2⤵
  - Views/modifies file attributes
  PID:2704
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\0x000f000000015c87-15.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3064
- 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:2808
- 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:2280
- 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:1968
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1868
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:1272
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:2340
- 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:2372
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:2532
- C:\Windows\system32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\0x000f000000015c87-15.exe" && pause
  2⤵
  - Deletes itself
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:2248
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:2176

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
a0dac7eb7b84e0564dbf1477beab5b5d

SHA1
95a4e72f17794b2b2fe2ac69f571fe5041e65aeb

SHA256
0cc5db435fe370f0c49388823671f532ce0fb48194f18c69c0166ff17214833d

SHA512
a8b26a44930e54fa2ec1f96c11817ca43af412e7db1eb14e6b9637ccfe424563a00a368a853dbd85aac8b91ad017ea3f01e7b46ad528787d45049c96d95d6f84

Download Submit
memory/1760-0-0x000007FEF5EA3000-0x000007FEF5EA4000-memory.dmp

Filesize
4KB

Download
memory/1760-1-0x0000000001150000-0x0000000001190000-memory.dmp

Filesize
256KB

Download
memory/1760-2-0x000007FEF5EA0000-0x000007FEF688C000-memory.dmp

Filesize
9.9MB

Download
memory/1760-49-0x000007FEF5EA0000-0x000007FEF688C000-memory.dmp

Filesize
9.9MB

Download
memory/2372-45-0x00000000027A0000-0x00000000027A8000-memory.dmp

Filesize
32KB

Download
memory/2372-44-0x000000001B720000-0x000000001BA02000-memory.dmp

Filesize
2.9MB

Download
memory/2808-14-0x000000001B500000-0x000000001B7E2000-memory.dmp

Filesize
2.9MB

Download
memory/2808-15-0x0000000002810000-0x0000000002818000-memory.dmp

Filesize
32KB

Download
memory/3064-8-0x0000000002340000-0x0000000002348000-memory.dmp

Filesize
32KB

Download
memory/3064-7-0x000000001B680000-0x000000001B962000-memory.dmp

Filesize
2.9MB

Download