umbral | 7f3c593c069e2b61afce1a1d7dc5c4f4ed355d361223e6a7c24c6bf2c95b7962

Analysis

max time kernel
117s
max time network
118s
platform
windows7_x64
resource
win7-20240419-en
resource tags

arch:x64arch:x86image:win7-20240419-enlocale:en-usos:windows7-x64system
submitted
17-06-2024 21:19

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General

Target

MM2farm.exe
Size

231KB
MD5

512f439206e868cc2c2548b88c5d0b8c
SHA1

9460a24c9d5c9e4629f508f5b0711dc12719e43d
SHA256

7f3c593c069e2b61afce1a1d7dc5c4f4ed355d361223e6a7c24c6bf2c95b7962
SHA512

14f0c46cae699850d44ad973b9ffc8de39ea25e76153ff607df9ed1aae13cde115374c6b0a46b922859f7ac439dafe7ef285445c1291b789d5ad75c450b84f9b
SSDEEP

6144:xloZM+rIkd8g+EtXHkv/iD4C2+qlx8e1m5Vi:DoZtL+EP8P73

Score

10^/10

umbral execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/1752-1-0x0000000000D90000-0x0000000000DD0000-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
2148	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	MM2farm.exe

Deletes itself 1 IoCs

pid	Process
2512	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
10	discord.com
9	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
2060	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
1924	PING.EXE

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
1752	MM2farm.exe
2148	powershell.exe
2700	powershell.exe
2136	powershell.exe
2788	powershell.exe
628	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	1752	MM2farm.exe
Token: SeIncreaseQuotaPrivilege	2348	wmic.exe
Token: SeSecurityPrivilege	2348	wmic.exe
Token: SeTakeOwnershipPrivilege	2348	wmic.exe
Token: SeLoadDriverPrivilege	2348	wmic.exe
Token: SeSystemProfilePrivilege	2348	wmic.exe
Token: SeSystemtimePrivilege	2348	wmic.exe
Token: SeProfSingleProcessPrivilege	2348	wmic.exe
Token: SeIncBasePriorityPrivilege	2348	wmic.exe
Token: SeCreatePagefilePrivilege	2348	wmic.exe
Token: SeBackupPrivilege	2348	wmic.exe
Token: SeRestorePrivilege	2348	wmic.exe
Token: SeShutdownPrivilege	2348	wmic.exe
Token: SeDebugPrivilege	2348	wmic.exe
Token: SeSystemEnvironmentPrivilege	2348	wmic.exe
Token: SeRemoteShutdownPrivilege	2348	wmic.exe
Token: SeUndockPrivilege	2348	wmic.exe
Token: SeManageVolumePrivilege	2348	wmic.exe
Token: 33	2348	wmic.exe
Token: 34	2348	wmic.exe
Token: 35	2348	wmic.exe
Token: SeIncreaseQuotaPrivilege	2348	wmic.exe
Token: SeSecurityPrivilege	2348	wmic.exe
Token: SeTakeOwnershipPrivilege	2348	wmic.exe
Token: SeLoadDriverPrivilege	2348	wmic.exe
Token: SeSystemProfilePrivilege	2348	wmic.exe
Token: SeSystemtimePrivilege	2348	wmic.exe
Token: SeProfSingleProcessPrivilege	2348	wmic.exe
Token: SeIncBasePriorityPrivilege	2348	wmic.exe
Token: SeCreatePagefilePrivilege	2348	wmic.exe
Token: SeBackupPrivilege	2348	wmic.exe
Token: SeRestorePrivilege	2348	wmic.exe
Token: SeShutdownPrivilege	2348	wmic.exe
Token: SeDebugPrivilege	2348	wmic.exe
Token: SeSystemEnvironmentPrivilege	2348	wmic.exe
Token: SeRemoteShutdownPrivilege	2348	wmic.exe
Token: SeUndockPrivilege	2348	wmic.exe
Token: SeManageVolumePrivilege	2348	wmic.exe
Token: 33	2348	wmic.exe
Token: 34	2348	wmic.exe
Token: 35	2348	wmic.exe
Token: SeDebugPrivilege	2148	powershell.exe
Token: SeDebugPrivilege	2700	powershell.exe
Token: SeDebugPrivilege	2136	powershell.exe
Token: SeDebugPrivilege	2788	powershell.exe
Token: SeIncreaseQuotaPrivilege	1696	wmic.exe
Token: SeSecurityPrivilege	1696	wmic.exe
Token: SeTakeOwnershipPrivilege	1696	wmic.exe
Token: SeLoadDriverPrivilege	1696	wmic.exe
Token: SeSystemProfilePrivilege	1696	wmic.exe
Token: SeSystemtimePrivilege	1696	wmic.exe
Token: SeProfSingleProcessPrivilege	1696	wmic.exe
Token: SeIncBasePriorityPrivilege	1696	wmic.exe
Token: SeCreatePagefilePrivilege	1696	wmic.exe
Token: SeBackupPrivilege	1696	wmic.exe
Token: SeRestorePrivilege	1696	wmic.exe
Token: SeShutdownPrivilege	1696	wmic.exe
Token: SeDebugPrivilege	1696	wmic.exe
Token: SeSystemEnvironmentPrivilege	1696	wmic.exe
Token: SeRemoteShutdownPrivilege	1696	wmic.exe
Token: SeUndockPrivilege	1696	wmic.exe
Token: SeManageVolumePrivilege	1696	wmic.exe
Token: 33	1696	wmic.exe
Token: 34	1696	wmic.exe

Suspicious use of WriteProcessMemory 39 IoCs

description	pid	Process	procid_target
PID 1752 wrote to memory of 2348	1752	MM2farm.exe	28
PID 1752 wrote to memory of 2348	1752	MM2farm.exe	28
PID 1752 wrote to memory of 2348	1752	MM2farm.exe	28
PID 1752 wrote to memory of 2640	1752	MM2farm.exe	31
PID 1752 wrote to memory of 2640	1752	MM2farm.exe	31
PID 1752 wrote to memory of 2640	1752	MM2farm.exe	31
PID 1752 wrote to memory of 2148	1752	MM2farm.exe	33
PID 1752 wrote to memory of 2148	1752	MM2farm.exe	33
PID 1752 wrote to memory of 2148	1752	MM2farm.exe	33
PID 1752 wrote to memory of 2700	1752	MM2farm.exe	35
PID 1752 wrote to memory of 2700	1752	MM2farm.exe	35
PID 1752 wrote to memory of 2700	1752	MM2farm.exe	35
PID 1752 wrote to memory of 2136	1752	MM2farm.exe	37
PID 1752 wrote to memory of 2136	1752	MM2farm.exe	37
PID 1752 wrote to memory of 2136	1752	MM2farm.exe	37
PID 1752 wrote to memory of 2788	1752	MM2farm.exe	39
PID 1752 wrote to memory of 2788	1752	MM2farm.exe	39
PID 1752 wrote to memory of 2788	1752	MM2farm.exe	39
PID 1752 wrote to memory of 1696	1752	MM2farm.exe	41
PID 1752 wrote to memory of 1696	1752	MM2farm.exe	41
PID 1752 wrote to memory of 1696	1752	MM2farm.exe	41
PID 1752 wrote to memory of 1576	1752	MM2farm.exe	43
PID 1752 wrote to memory of 1576	1752	MM2farm.exe	43
PID 1752 wrote to memory of 1576	1752	MM2farm.exe	43
PID 1752 wrote to memory of 1648	1752	MM2farm.exe	45
PID 1752 wrote to memory of 1648	1752	MM2farm.exe	45
PID 1752 wrote to memory of 1648	1752	MM2farm.exe	45
PID 1752 wrote to memory of 628	1752	MM2farm.exe	47
PID 1752 wrote to memory of 628	1752	MM2farm.exe	47
PID 1752 wrote to memory of 628	1752	MM2farm.exe	47
PID 1752 wrote to memory of 2060	1752	MM2farm.exe	49
PID 1752 wrote to memory of 2060	1752	MM2farm.exe	49
PID 1752 wrote to memory of 2060	1752	MM2farm.exe	49
PID 1752 wrote to memory of 2512	1752	MM2farm.exe	51
PID 1752 wrote to memory of 2512	1752	MM2farm.exe	51
PID 1752 wrote to memory of 2512	1752	MM2farm.exe	51
PID 2512 wrote to memory of 1924	2512	cmd.exe	53
PID 2512 wrote to memory of 1924	2512	cmd.exe	53
PID 2512 wrote to memory of 1924	2512	cmd.exe	53

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
2640	attrib.exe

C:\Users\Admin\AppData\Local\Temp\MM2farm.exe
"C:\Users\Admin\AppData\Local\Temp\MM2farm.exe"
1⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1752
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2348
- C:\Windows\system32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\MM2farm.exe"
  2⤵
  - Views/modifies file attributes
  PID:2640
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\MM2farm.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2148
- 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:2700
- 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:2136
- 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:2788
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1696
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:1576
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:1648
- 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:628
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:2060
- C:\Windows\system32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\MM2farm.exe" && pause
  2⤵
  - Deletes itself
  - Suspicious use of WriteProcessMemory
  PID:2512
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - Runs ping.exe
    PID:1924

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
e8c1e2814e95968705a2bfaaa992b326

SHA1
155b7e15b67e673486d6b37c596a52b32796046d

SHA256
d107a3ca1a723e1a18cc33bee4d97a65f2b6d36ab7eed5328f5a43e45123a2b1

SHA512
d6f7bf964be445e89e8f189957e5116671a1ce4e748a0e3b01f9d1b92a76a8847f98d5447e57dbb7d55b7bc9f3b0a87c10759e16f4d4c0b23aad6f0cf2646cac

Download Submit
memory/628-43-0x0000000001E60000-0x0000000001E68000-memory.dmp

Filesize
32KB

Download
memory/1752-0-0x000007FEF53C3000-0x000007FEF53C4000-memory.dmp

Filesize
4KB

Download
memory/1752-1-0x0000000000D90000-0x0000000000DD0000-memory.dmp

Filesize
256KB

Download
memory/1752-2-0x000007FEF53C0000-0x000007FEF5DAC000-memory.dmp

Filesize
9.9MB

Download
memory/1752-47-0x000007FEF53C0000-0x000007FEF5DAC000-memory.dmp

Filesize
9.9MB

Download
memory/2148-7-0x000000001B5D0000-0x000000001B8B2000-memory.dmp

Filesize
2.9MB

Download
memory/2148-8-0x0000000001DE0000-0x0000000001DE8000-memory.dmp

Filesize
32KB

Download
memory/2700-14-0x000000001B460000-0x000000001B742000-memory.dmp

Filesize
2.9MB

Download
memory/2700-15-0x0000000002A70000-0x0000000002A78000-memory.dmp

Filesize
32KB

Download