umbral | 545757791f0b6759a9da98687651c1ad9f32f86d8f3e7f5d163d2ebba8f4bc3e

Analysis

max time kernel
122s
max time network
123s
platform
windows7_x64
resource
win7-20240220-en
resource tags

arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
submitted
01-03-2024 10:37

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General

Target

injector.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 2 IoCs

resource	yara_rule
behavioral1/memory/2932-0-0x00000000013E0000-0x0000000001420000-memory.dmp	family_umbral
behavioral1/memory/2932-2-0x000000001B0D0000-0x000000001B150000-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	injector.exe

Deletes itself 1 IoCs

pid	Process
960	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
772	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
1796	PING.EXE

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
2828	powershell.exe
2704	powershell.exe
2036	powershell.exe
1684	powershell.exe
1040	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2932	injector.exe
Token: SeDebugPrivilege	2828	powershell.exe
Token: SeDebugPrivilege	2704	powershell.exe
Token: SeDebugPrivilege	2036	powershell.exe
Token: SeDebugPrivilege	1684	powershell.exe
Token: SeIncreaseQuotaPrivilege	272	wmic.exe
Token: SeSecurityPrivilege	272	wmic.exe
Token: SeTakeOwnershipPrivilege	272	wmic.exe
Token: SeLoadDriverPrivilege	272	wmic.exe
Token: SeSystemProfilePrivilege	272	wmic.exe
Token: SeSystemtimePrivilege	272	wmic.exe
Token: SeProfSingleProcessPrivilege	272	wmic.exe
Token: SeIncBasePriorityPrivilege	272	wmic.exe
Token: SeCreatePagefilePrivilege	272	wmic.exe
Token: SeBackupPrivilege	272	wmic.exe
Token: SeRestorePrivilege	272	wmic.exe
Token: SeShutdownPrivilege	272	wmic.exe
Token: SeDebugPrivilege	272	wmic.exe
Token: SeSystemEnvironmentPrivilege	272	wmic.exe
Token: SeRemoteShutdownPrivilege	272	wmic.exe
Token: SeUndockPrivilege	272	wmic.exe
Token: SeManageVolumePrivilege	272	wmic.exe
Token: 33	272	wmic.exe
Token: 34	272	wmic.exe
Token: 35	272	wmic.exe
Token: SeIncreaseQuotaPrivilege	272	wmic.exe
Token: SeSecurityPrivilege	272	wmic.exe
Token: SeTakeOwnershipPrivilege	272	wmic.exe
Token: SeLoadDriverPrivilege	272	wmic.exe
Token: SeSystemProfilePrivilege	272	wmic.exe
Token: SeSystemtimePrivilege	272	wmic.exe
Token: SeProfSingleProcessPrivilege	272	wmic.exe
Token: SeIncBasePriorityPrivilege	272	wmic.exe
Token: SeCreatePagefilePrivilege	272	wmic.exe
Token: SeBackupPrivilege	272	wmic.exe
Token: SeRestorePrivilege	272	wmic.exe
Token: SeShutdownPrivilege	272	wmic.exe
Token: SeDebugPrivilege	272	wmic.exe
Token: SeSystemEnvironmentPrivilege	272	wmic.exe
Token: SeRemoteShutdownPrivilege	272	wmic.exe
Token: SeUndockPrivilege	272	wmic.exe
Token: SeManageVolumePrivilege	272	wmic.exe
Token: 33	272	wmic.exe
Token: 34	272	wmic.exe
Token: 35	272	wmic.exe
Token: SeIncreaseQuotaPrivilege	1336	wmic.exe
Token: SeSecurityPrivilege	1336	wmic.exe
Token: SeTakeOwnershipPrivilege	1336	wmic.exe
Token: SeLoadDriverPrivilege	1336	wmic.exe
Token: SeSystemProfilePrivilege	1336	wmic.exe
Token: SeSystemtimePrivilege	1336	wmic.exe
Token: SeProfSingleProcessPrivilege	1336	wmic.exe
Token: SeIncBasePriorityPrivilege	1336	wmic.exe
Token: SeCreatePagefilePrivilege	1336	wmic.exe
Token: SeBackupPrivilege	1336	wmic.exe
Token: SeRestorePrivilege	1336	wmic.exe
Token: SeShutdownPrivilege	1336	wmic.exe
Token: SeDebugPrivilege	1336	wmic.exe
Token: SeSystemEnvironmentPrivilege	1336	wmic.exe
Token: SeRemoteShutdownPrivilege	1336	wmic.exe
Token: SeUndockPrivilege	1336	wmic.exe
Token: SeManageVolumePrivilege	1336	wmic.exe
Token: 33	1336	wmic.exe
Token: 34	1336	wmic.exe

Suspicious use of WriteProcessMemory 36 IoCs

description	pid	Process	procid_target
PID 2932 wrote to memory of 2608	2932	injector.exe	28
PID 2932 wrote to memory of 2608	2932	injector.exe	28
PID 2932 wrote to memory of 2608	2932	injector.exe	28
PID 2932 wrote to memory of 2828	2932	injector.exe	30
PID 2932 wrote to memory of 2828	2932	injector.exe	30
PID 2932 wrote to memory of 2828	2932	injector.exe	30
PID 2932 wrote to memory of 2704	2932	injector.exe	32
PID 2932 wrote to memory of 2704	2932	injector.exe	32
PID 2932 wrote to memory of 2704	2932	injector.exe	32
PID 2932 wrote to memory of 2036	2932	injector.exe	34
PID 2932 wrote to memory of 2036	2932	injector.exe	34
PID 2932 wrote to memory of 2036	2932	injector.exe	34
PID 2932 wrote to memory of 1684	2932	injector.exe	36
PID 2932 wrote to memory of 1684	2932	injector.exe	36
PID 2932 wrote to memory of 1684	2932	injector.exe	36
PID 2932 wrote to memory of 272	2932	injector.exe	38
PID 2932 wrote to memory of 272	2932	injector.exe	38
PID 2932 wrote to memory of 272	2932	injector.exe	38
PID 2932 wrote to memory of 1336	2932	injector.exe	41
PID 2932 wrote to memory of 1336	2932	injector.exe	41
PID 2932 wrote to memory of 1336	2932	injector.exe	41
PID 2932 wrote to memory of 1212	2932	injector.exe	43
PID 2932 wrote to memory of 1212	2932	injector.exe	43
PID 2932 wrote to memory of 1212	2932	injector.exe	43
PID 2932 wrote to memory of 1040	2932	injector.exe	45
PID 2932 wrote to memory of 1040	2932	injector.exe	45
PID 2932 wrote to memory of 1040	2932	injector.exe	45
PID 2932 wrote to memory of 772	2932	injector.exe	47
PID 2932 wrote to memory of 772	2932	injector.exe	47
PID 2932 wrote to memory of 772	2932	injector.exe	47
PID 2932 wrote to memory of 960	2932	injector.exe	49
PID 2932 wrote to memory of 960	2932	injector.exe	49
PID 2932 wrote to memory of 960	2932	injector.exe	49
PID 960 wrote to memory of 1796	960	cmd.exe	51
PID 960 wrote to memory of 1796	960	cmd.exe	51
PID 960 wrote to memory of 1796	960	cmd.exe	51

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
2608	attrib.exe

C:\Users\Admin\AppData\Local\Temp\injector.exe
"C:\Users\Admin\AppData\Local\Temp\injector.exe"
1⤵
- Drops file in Drivers directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2932
- C:\Windows\system32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\injector.exe"
  2⤵
  - Views/modifies file attributes
  PID:2608
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\injector.exe'
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2828
- 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:2704
- 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:2036
- 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:1684
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:272
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1336
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:1212
- 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:1040
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:772
- C:\Windows\system32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\injector.exe" && pause
  2⤵
  - Deletes itself
  - Suspicious use of WriteProcessMemory
  PID:960
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - Runs ping.exe
    PID:1796

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\2A8NKYENR8KA4L5DPSAN.temp

Filesize
7KB

MD5
d2324d0763e64281051fe44292130221

SHA1
a24cd08eaa9276dc42d73177a6b97e4b74657d09

SHA256
ed092cafa77d9e500b37ed8f8725048477c81b3f6614c0a1fd586883ca5809d4

SHA512
4562a36252db811599ce997f01c1c522a3de6f316b3dde01b74fe2a50079c16a51e0a91e5bd81949c8f4591ceeb02442389893c2b0a4f023e54fb5227592141b

Download Submit
memory/1040-73-0x0000000002994000-0x0000000002997000-memory.dmp

Filesize
12KB

Download
memory/1040-75-0x000000000299B000-0x0000000002A02000-memory.dmp

Filesize
412KB

Download
memory/1040-78-0x000007FEED9B0000-0x000007FEEE34D000-memory.dmp

Filesize
9.6MB

Download
memory/1040-76-0x0000000002990000-0x0000000002A10000-memory.dmp

Filesize
512KB

Download
memory/1040-74-0x000007FEED9B0000-0x000007FEEE34D000-memory.dmp

Filesize
9.6MB

Download
memory/1040-72-0x0000000002990000-0x0000000002A10000-memory.dmp

Filesize
512KB

Download
memory/1040-71-0x000007FEED9B0000-0x000007FEEE34D000-memory.dmp

Filesize
9.6MB

Download
memory/1040-69-0x000000001B690000-0x000000001B972000-memory.dmp

Filesize
2.9MB

Download
memory/1684-57-0x000007FEED010000-0x000007FEED9AD000-memory.dmp

Filesize
9.6MB

Download
memory/1684-60-0x000007FEED010000-0x000007FEED9AD000-memory.dmp

Filesize
9.6MB

Download
memory/1684-59-0x0000000002CF0000-0x0000000002D70000-memory.dmp

Filesize
512KB

Download
memory/1684-58-0x0000000002CF0000-0x0000000002D70000-memory.dmp

Filesize
512KB

Download
memory/1684-56-0x0000000002CF0000-0x0000000002D70000-memory.dmp

Filesize
512KB

Download
memory/1684-55-0x000007FEED010000-0x000007FEED9AD000-memory.dmp

Filesize
9.6MB

Download
memory/2036-44-0x0000000002C30000-0x0000000002CB0000-memory.dmp

Filesize
512KB

Download
memory/2036-49-0x000007FEED9B0000-0x000007FEEE34D000-memory.dmp

Filesize
9.6MB

Download
memory/2036-46-0x0000000002C30000-0x0000000002CB0000-memory.dmp

Filesize
512KB

Download
memory/2036-47-0x0000000002C30000-0x0000000002CB0000-memory.dmp

Filesize
512KB

Download
memory/2036-48-0x0000000002C30000-0x0000000002CB0000-memory.dmp

Filesize
512KB

Download
memory/2036-45-0x000007FEED9B0000-0x000007FEEE34D000-memory.dmp

Filesize
9.6MB

Download
memory/2036-43-0x000007FEED9B0000-0x000007FEEE34D000-memory.dmp

Filesize
9.6MB

Download
memory/2704-27-0x00000000029C0000-0x0000000002A40000-memory.dmp

Filesize
512KB

Download
memory/2704-20-0x000000001B5E0000-0x000000001B8C2000-memory.dmp

Filesize
2.9MB

Download
memory/2704-28-0x000007FEED010000-0x000007FEED9AD000-memory.dmp

Filesize
9.6MB

Download
memory/2704-23-0x0000000001E10000-0x0000000001E18000-memory.dmp

Filesize
32KB

Download
memory/2704-26-0x00000000029C0000-0x0000000002A40000-memory.dmp

Filesize
512KB

Download
memory/2704-25-0x00000000029C0000-0x0000000002A40000-memory.dmp

Filesize
512KB

Download
memory/2704-24-0x000007FEED010000-0x000007FEED9AD000-memory.dmp

Filesize
9.6MB

Download
memory/2704-21-0x000007FEED010000-0x000007FEED9AD000-memory.dmp

Filesize
9.6MB

Download
memory/2704-22-0x00000000029C0000-0x0000000002A40000-memory.dmp

Filesize
512KB

Download
memory/2828-10-0x0000000002C20000-0x0000000002CA0000-memory.dmp

Filesize
512KB

Download
memory/2828-8-0x0000000001E80000-0x0000000001E88000-memory.dmp

Filesize
32KB

Download
memory/2828-13-0x0000000002C20000-0x0000000002CA0000-memory.dmp

Filesize
512KB

Download
memory/2828-12-0x0000000002C20000-0x0000000002CA0000-memory.dmp

Filesize
512KB

Download
memory/2828-9-0x000007FEED9B0000-0x000007FEEE34D000-memory.dmp

Filesize
9.6MB

Download
memory/2828-11-0x000007FEED9B0000-0x000007FEEE34D000-memory.dmp

Filesize
9.6MB

Download
memory/2828-7-0x000000001B6B0000-0x000000001B992000-memory.dmp

Filesize
2.9MB

Download
memory/2828-14-0x000007FEED9B0000-0x000007FEEE34D000-memory.dmp

Filesize
9.6MB

Download
memory/2932-77-0x000000001B0D0000-0x000000001B150000-memory.dmp

Filesize
512KB

Download
memory/2932-0-0x00000000013E0000-0x0000000001420000-memory.dmp

Filesize
256KB

Download
memory/2932-70-0x000007FEF57F0000-0x000007FEF61DC000-memory.dmp

Filesize
9.9MB

Download
memory/2932-2-0x000000001B0D0000-0x000000001B150000-memory.dmp

Filesize
512KB

Download
memory/2932-1-0x000007FEF57F0000-0x000007FEF61DC000-memory.dmp

Filesize
9.9MB

Download
memory/2932-82-0x000007FEF57F0000-0x000007FEF61DC000-memory.dmp

Filesize
9.9MB

Download