umbral | 864825be054e1dd6ff62defe866c25c03961ef221975f386fe5385c8de6f8ce6

Analysis

max time kernel
118s
max time network
119s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
30-11-2024 13:29

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General

Target

selfbott.exe
Size

227KB
MD5

e8bf31ef50755a97e720a2272bc2d982
SHA1

7d99287c32962fcb643916817a1f97dde5eeb13b
SHA256

864825be054e1dd6ff62defe866c25c03961ef221975f386fe5385c8de6f8ce6
SHA512

27cf74d9f73677f449cc9bd80d3edaa99b12d8a225e067237caa616aaf85012925a13da3eb6512fbf762e0dc765f85fb76dc5fffe9eff9f7a3aab4733cd35d94
SSDEEP

6144:eloZM9rIkd8g+EtXHkv/iD49gXDR/k4XKG/BcoNgdb8e1m9i:IoZOL+EP89gXDR/k4XKG/BcoNAH

Score

10^/10

umbral discovery execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/2072-1-0x0000000001120000-0x0000000001160000-memory.dmp	family_umbral

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

Command and Scripting Interpreter: PowerShell 1 TTPs 4 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
2844	powershell.exe
1744	powershell.exe
2248	powershell.exe
2488	powershell.exe

Drops file in Drivers directory 1 IoCs

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

Deletes itself 1 IoCs

pid	Process
1960	cmd.exe

Reads user/profile data of web browsers 3 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

Credentials from Web Browsers
T1555.003

Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service

T1102

flow	ioc
8	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

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 2 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
1960	cmd.exe
2260	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
1772	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2260	PING.EXE

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
2488	powershell.exe
2248	powershell.exe
2844	powershell.exe
2452	powershell.exe
1744	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2072	selfbott.exe
Token: SeDebugPrivilege	2488	powershell.exe
Token: SeDebugPrivilege	2248	powershell.exe
Token: SeDebugPrivilege	2844	powershell.exe
Token: SeDebugPrivilege	2452	powershell.exe
Token: SeIncreaseQuotaPrivilege	2816	wmic.exe
Token: SeSecurityPrivilege	2816	wmic.exe
Token: SeTakeOwnershipPrivilege	2816	wmic.exe
Token: SeLoadDriverPrivilege	2816	wmic.exe
Token: SeSystemProfilePrivilege	2816	wmic.exe
Token: SeSystemtimePrivilege	2816	wmic.exe
Token: SeProfSingleProcessPrivilege	2816	wmic.exe
Token: SeIncBasePriorityPrivilege	2816	wmic.exe
Token: SeCreatePagefilePrivilege	2816	wmic.exe
Token: SeBackupPrivilege	2816	wmic.exe
Token: SeRestorePrivilege	2816	wmic.exe
Token: SeShutdownPrivilege	2816	wmic.exe
Token: SeDebugPrivilege	2816	wmic.exe
Token: SeSystemEnvironmentPrivilege	2816	wmic.exe
Token: SeRemoteShutdownPrivilege	2816	wmic.exe
Token: SeUndockPrivilege	2816	wmic.exe
Token: SeManageVolumePrivilege	2816	wmic.exe
Token: 33	2816	wmic.exe
Token: 34	2816	wmic.exe
Token: 35	2816	wmic.exe
Token: SeIncreaseQuotaPrivilege	2816	wmic.exe
Token: SeSecurityPrivilege	2816	wmic.exe
Token: SeTakeOwnershipPrivilege	2816	wmic.exe
Token: SeLoadDriverPrivilege	2816	wmic.exe
Token: SeSystemProfilePrivilege	2816	wmic.exe
Token: SeSystemtimePrivilege	2816	wmic.exe
Token: SeProfSingleProcessPrivilege	2816	wmic.exe
Token: SeIncBasePriorityPrivilege	2816	wmic.exe
Token: SeCreatePagefilePrivilege	2816	wmic.exe
Token: SeBackupPrivilege	2816	wmic.exe
Token: SeRestorePrivilege	2816	wmic.exe
Token: SeShutdownPrivilege	2816	wmic.exe
Token: SeDebugPrivilege	2816	wmic.exe
Token: SeSystemEnvironmentPrivilege	2816	wmic.exe
Token: SeRemoteShutdownPrivilege	2816	wmic.exe
Token: SeUndockPrivilege	2816	wmic.exe
Token: SeManageVolumePrivilege	2816	wmic.exe
Token: 33	2816	wmic.exe
Token: 34	2816	wmic.exe
Token: 35	2816	wmic.exe
Token: SeIncreaseQuotaPrivilege	1340	wmic.exe
Token: SeSecurityPrivilege	1340	wmic.exe
Token: SeTakeOwnershipPrivilege	1340	wmic.exe
Token: SeLoadDriverPrivilege	1340	wmic.exe
Token: SeSystemProfilePrivilege	1340	wmic.exe
Token: SeSystemtimePrivilege	1340	wmic.exe
Token: SeProfSingleProcessPrivilege	1340	wmic.exe
Token: SeIncBasePriorityPrivilege	1340	wmic.exe
Token: SeCreatePagefilePrivilege	1340	wmic.exe
Token: SeBackupPrivilege	1340	wmic.exe
Token: SeRestorePrivilege	1340	wmic.exe
Token: SeShutdownPrivilege	1340	wmic.exe
Token: SeDebugPrivilege	1340	wmic.exe
Token: SeSystemEnvironmentPrivilege	1340	wmic.exe
Token: SeRemoteShutdownPrivilege	1340	wmic.exe
Token: SeUndockPrivilege	1340	wmic.exe
Token: SeManageVolumePrivilege	1340	wmic.exe
Token: 33	1340	wmic.exe
Token: 34	1340	wmic.exe

Suspicious use of WriteProcessMemory 36 IoCs

description	pid	Process	procid_target
PID 2072 wrote to memory of 2268	2072	selfbott.exe	30
PID 2072 wrote to memory of 2268	2072	selfbott.exe	30
PID 2072 wrote to memory of 2268	2072	selfbott.exe	30
PID 2072 wrote to memory of 2488	2072	selfbott.exe	32
PID 2072 wrote to memory of 2488	2072	selfbott.exe	32
PID 2072 wrote to memory of 2488	2072	selfbott.exe	32
PID 2072 wrote to memory of 2248	2072	selfbott.exe	34
PID 2072 wrote to memory of 2248	2072	selfbott.exe	34
PID 2072 wrote to memory of 2248	2072	selfbott.exe	34
PID 2072 wrote to memory of 2844	2072	selfbott.exe	36
PID 2072 wrote to memory of 2844	2072	selfbott.exe	36
PID 2072 wrote to memory of 2844	2072	selfbott.exe	36
PID 2072 wrote to memory of 2452	2072	selfbott.exe	38
PID 2072 wrote to memory of 2452	2072	selfbott.exe	38
PID 2072 wrote to memory of 2452	2072	selfbott.exe	38
PID 2072 wrote to memory of 2816	2072	selfbott.exe	40
PID 2072 wrote to memory of 2816	2072	selfbott.exe	40
PID 2072 wrote to memory of 2816	2072	selfbott.exe	40
PID 2072 wrote to memory of 1340	2072	selfbott.exe	43
PID 2072 wrote to memory of 1340	2072	selfbott.exe	43
PID 2072 wrote to memory of 1340	2072	selfbott.exe	43
PID 2072 wrote to memory of 668	2072	selfbott.exe	45
PID 2072 wrote to memory of 668	2072	selfbott.exe	45
PID 2072 wrote to memory of 668	2072	selfbott.exe	45
PID 2072 wrote to memory of 1744	2072	selfbott.exe	47
PID 2072 wrote to memory of 1744	2072	selfbott.exe	47
PID 2072 wrote to memory of 1744	2072	selfbott.exe	47
PID 2072 wrote to memory of 1772	2072	selfbott.exe	49
PID 2072 wrote to memory of 1772	2072	selfbott.exe	49
PID 2072 wrote to memory of 1772	2072	selfbott.exe	49
PID 2072 wrote to memory of 1960	2072	selfbott.exe	51
PID 2072 wrote to memory of 1960	2072	selfbott.exe	51
PID 2072 wrote to memory of 1960	2072	selfbott.exe	51
PID 1960 wrote to memory of 2260	1960	cmd.exe	53
PID 1960 wrote to memory of 2260	1960	cmd.exe	53
PID 1960 wrote to memory of 2260	1960	cmd.exe	53

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
2268	attrib.exe

C:\Users\Admin\AppData\Local\Temp\selfbott.exe
"C:\Users\Admin\AppData\Local\Temp\selfbott.exe"
1⤵
- Drops file in Drivers directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2072
- C:\Windows\system32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\selfbott.exe"
  2⤵
  - Views/modifies file attributes
  PID:2268
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\selfbott.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2488
- 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⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2248
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Get-ItemPropertyValue -Path HKCU:SOFTWARE\Roblox\RobloxStudioBrowser\roblox.com -Name .ROBLOSECURITY
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2844
- 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:2452
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2816
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1340
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:668
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Get-ItemPropertyValue -Path 'HKLM:System\CurrentControlSet\Control\Session Manager\Environment' -Name PROCESSOR_IDENTIFIER
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  PID:1744
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:1772
- C:\Windows\system32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\selfbott.exe" && pause
  2⤵
  - Deletes itself
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:1960
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:2260

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

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Remote System Discovery

T1018

System Information Discovery

T1082

System Network Configuration Discovery

T1016

Internet Connection Discovery

T1016.001

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
dbec8d69e3bdaf738d20b10032cd6d4d

SHA1
a4af1d14861b32e7019ff77f47b512526b49417c

SHA256
5630c11a6c6f350dd37ebd0e5828a9346b227949e5e827b4add66ee5e364a8ce

SHA512
be5d34e5d9da8731bb41e0132f56c1220c8b5388a433658539fa18c94747bd12c6023e1b8a7774fcbfa973f0541f49006042f1f012444c1044c42f6af44b9cd6

Download Submit
memory/2072-1-0x0000000001120000-0x0000000001160000-memory.dmp

Filesize
256KB

Download
memory/2072-2-0x000007FEF5A00000-0x000007FEF63EC000-memory.dmp

Filesize
9.9MB

Download
memory/2072-53-0x000007FEF5A00000-0x000007FEF63EC000-memory.dmp

Filesize
9.9MB

Download
memory/2072-0-0x000007FEF5A03000-0x000007FEF5A04000-memory.dmp

Filesize
4KB

Download
memory/2248-22-0x0000000002810000-0x0000000002818000-memory.dmp

Filesize
32KB

Download
memory/2248-21-0x000000001B530000-0x000000001B812000-memory.dmp

Filesize
2.9MB

Download
memory/2488-9-0x000007FEED7E0000-0x000007FEEE17D000-memory.dmp

Filesize
9.6MB

Download
memory/2488-13-0x000007FEED7E0000-0x000007FEEE17D000-memory.dmp

Filesize
9.6MB

Download
memory/2488-14-0x000007FEED7E0000-0x000007FEEE17D000-memory.dmp

Filesize
9.6MB

Download
memory/2488-15-0x000007FEED7E0000-0x000007FEEE17D000-memory.dmp

Filesize
9.6MB

Download
memory/2488-10-0x00000000026E0000-0x00000000026E8000-memory.dmp

Filesize
32KB

Download
memory/2488-11-0x000007FEED7E0000-0x000007FEEE17D000-memory.dmp

Filesize
9.6MB

Download
memory/2488-12-0x000007FEED7E0000-0x000007FEEE17D000-memory.dmp

Filesize
9.6MB

Download
memory/2488-8-0x000000001B540000-0x000000001B822000-memory.dmp

Filesize
2.9MB

Download
memory/2488-7-0x000007FEEDA9E000-0x000007FEEDA9F000-memory.dmp

Filesize
4KB

Download