umbral | 9ff459396b1f4de8dbca8a866ff3b9e4a46c48a9dc1071812a256fe21349caf9

Analysis

max time kernel
148s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
29-11-2024 13:37

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General

Target

BESTDISCORDIPPULLERMAMBAPULLER.exe
Size

230KB
MD5

b23d20593d9176d95302568243f60052
SHA1

fef1aa01b7a41a8255d71309c7c5badf48a7a907
SHA256

9ff459396b1f4de8dbca8a866ff3b9e4a46c48a9dc1071812a256fe21349caf9
SHA512

13a9f86ca7b7df87b4174875fb3d7a7552986a6484297c841037b054d3bf01eab724f3b080f9f1984cc58912e0a50953f5d1e2355dca1cc5366eca4870400d3e
SSDEEP

6144:lloZM+rIkd8g+EtXHkv/iD4M8RobhS6FDAxDeebSzb8e1muQTSi:noZtL+EP8M8RobhS6FDAxDeebIHQz

Score

10^/10

umbral discovery execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

Processes:

resource	yara_rule
behavioral2/memory/2356-1-0x000002E3EEFF0000-0x000002E3EF030000-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

Processes:

powershell.exepowershell.exepowershell.exepowershell.exe

pid	Process
3028	powershell.exe
3160	powershell.exe
3020	powershell.exe
3732	powershell.exe

Drops file in Drivers directory 1 IoCs

Processes:

BESTDISCORDIPPULLERMAMBAPULLER.exe

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

Processes:

flow	ioc
24	discord.com
25	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.

Processes:

flow	ioc
8	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

Processes:

cmd.exePING.EXE

pid	Process
3184	cmd.exe
4036	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

Processes:

wmic.exe

pid	Process
1312	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

Processes:

PING.EXE

pid	Process
4036	PING.EXE

Suspicious behavior: EnumeratesProcesses 11 IoCs

Processes:

BESTDISCORDIPPULLERMAMBAPULLER.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exe

pid	Process
2356	BESTDISCORDIPPULLERMAMBAPULLER.exe
3732	powershell.exe
3732	powershell.exe
3028	powershell.exe
3028	powershell.exe
3160	powershell.exe
3160	powershell.exe
916	powershell.exe
916	powershell.exe
3020	powershell.exe
3020	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

Processes:

BESTDISCORDIPPULLERMAMBAPULLER.exewmic.exepowershell.exepowershell.exepowershell.exepowershell.exewmic.exe

description	pid	Process
Token: SeDebugPrivilege	2356	BESTDISCORDIPPULLERMAMBAPULLER.exe
Token: SeIncreaseQuotaPrivilege	4824	wmic.exe
Token: SeSecurityPrivilege	4824	wmic.exe
Token: SeTakeOwnershipPrivilege	4824	wmic.exe
Token: SeLoadDriverPrivilege	4824	wmic.exe
Token: SeSystemProfilePrivilege	4824	wmic.exe
Token: SeSystemtimePrivilege	4824	wmic.exe
Token: SeProfSingleProcessPrivilege	4824	wmic.exe
Token: SeIncBasePriorityPrivilege	4824	wmic.exe
Token: SeCreatePagefilePrivilege	4824	wmic.exe
Token: SeBackupPrivilege	4824	wmic.exe
Token: SeRestorePrivilege	4824	wmic.exe
Token: SeShutdownPrivilege	4824	wmic.exe
Token: SeDebugPrivilege	4824	wmic.exe
Token: SeSystemEnvironmentPrivilege	4824	wmic.exe
Token: SeRemoteShutdownPrivilege	4824	wmic.exe
Token: SeUndockPrivilege	4824	wmic.exe
Token: SeManageVolumePrivilege	4824	wmic.exe
Token: 33	4824	wmic.exe
Token: 34	4824	wmic.exe
Token: 35	4824	wmic.exe
Token: 36	4824	wmic.exe
Token: SeIncreaseQuotaPrivilege	4824	wmic.exe
Token: SeSecurityPrivilege	4824	wmic.exe
Token: SeTakeOwnershipPrivilege	4824	wmic.exe
Token: SeLoadDriverPrivilege	4824	wmic.exe
Token: SeSystemProfilePrivilege	4824	wmic.exe
Token: SeSystemtimePrivilege	4824	wmic.exe
Token: SeProfSingleProcessPrivilege	4824	wmic.exe
Token: SeIncBasePriorityPrivilege	4824	wmic.exe
Token: SeCreatePagefilePrivilege	4824	wmic.exe
Token: SeBackupPrivilege	4824	wmic.exe
Token: SeRestorePrivilege	4824	wmic.exe
Token: SeShutdownPrivilege	4824	wmic.exe
Token: SeDebugPrivilege	4824	wmic.exe
Token: SeSystemEnvironmentPrivilege	4824	wmic.exe
Token: SeRemoteShutdownPrivilege	4824	wmic.exe
Token: SeUndockPrivilege	4824	wmic.exe
Token: SeManageVolumePrivilege	4824	wmic.exe
Token: 33	4824	wmic.exe
Token: 34	4824	wmic.exe
Token: 35	4824	wmic.exe
Token: 36	4824	wmic.exe
Token: SeDebugPrivilege	3732	powershell.exe
Token: SeDebugPrivilege	3028	powershell.exe
Token: SeDebugPrivilege	3160	powershell.exe
Token: SeDebugPrivilege	916	powershell.exe
Token: SeIncreaseQuotaPrivilege	3196	wmic.exe
Token: SeSecurityPrivilege	3196	wmic.exe
Token: SeTakeOwnershipPrivilege	3196	wmic.exe
Token: SeLoadDriverPrivilege	3196	wmic.exe
Token: SeSystemProfilePrivilege	3196	wmic.exe
Token: SeSystemtimePrivilege	3196	wmic.exe
Token: SeProfSingleProcessPrivilege	3196	wmic.exe
Token: SeIncBasePriorityPrivilege	3196	wmic.exe
Token: SeCreatePagefilePrivilege	3196	wmic.exe
Token: SeBackupPrivilege	3196	wmic.exe
Token: SeRestorePrivilege	3196	wmic.exe
Token: SeShutdownPrivilege	3196	wmic.exe
Token: SeDebugPrivilege	3196	wmic.exe
Token: SeSystemEnvironmentPrivilege	3196	wmic.exe
Token: SeRemoteShutdownPrivilege	3196	wmic.exe
Token: SeUndockPrivilege	3196	wmic.exe
Token: SeManageVolumePrivilege	3196	wmic.exe

Suspicious use of WriteProcessMemory 26 IoCs

Processes:

BESTDISCORDIPPULLERMAMBAPULLER.execmd.exe

description	pid	Process	procid_target
PID 2356 wrote to memory of 4824	2356	BESTDISCORDIPPULLERMAMBAPULLER.exe	86
PID 2356 wrote to memory of 4824	2356	BESTDISCORDIPPULLERMAMBAPULLER.exe	86
PID 2356 wrote to memory of 2596	2356	BESTDISCORDIPPULLERMAMBAPULLER.exe	89
PID 2356 wrote to memory of 2596	2356	BESTDISCORDIPPULLERMAMBAPULLER.exe	89
PID 2356 wrote to memory of 3732	2356	BESTDISCORDIPPULLERMAMBAPULLER.exe	91
PID 2356 wrote to memory of 3732	2356	BESTDISCORDIPPULLERMAMBAPULLER.exe	91
PID 2356 wrote to memory of 3028	2356	BESTDISCORDIPPULLERMAMBAPULLER.exe	93
PID 2356 wrote to memory of 3028	2356	BESTDISCORDIPPULLERMAMBAPULLER.exe	93
PID 2356 wrote to memory of 3160	2356	BESTDISCORDIPPULLERMAMBAPULLER.exe	95
PID 2356 wrote to memory of 3160	2356	BESTDISCORDIPPULLERMAMBAPULLER.exe	95
PID 2356 wrote to memory of 916	2356	BESTDISCORDIPPULLERMAMBAPULLER.exe	97
PID 2356 wrote to memory of 916	2356	BESTDISCORDIPPULLERMAMBAPULLER.exe	97
PID 2356 wrote to memory of 3196	2356	BESTDISCORDIPPULLERMAMBAPULLER.exe	102
PID 2356 wrote to memory of 3196	2356	BESTDISCORDIPPULLERMAMBAPULLER.exe	102
PID 2356 wrote to memory of 4128	2356	BESTDISCORDIPPULLERMAMBAPULLER.exe	104
PID 2356 wrote to memory of 4128	2356	BESTDISCORDIPPULLERMAMBAPULLER.exe	104
PID 2356 wrote to memory of 4844	2356	BESTDISCORDIPPULLERMAMBAPULLER.exe	106
PID 2356 wrote to memory of 4844	2356	BESTDISCORDIPPULLERMAMBAPULLER.exe	106
PID 2356 wrote to memory of 3020	2356	BESTDISCORDIPPULLERMAMBAPULLER.exe	110
PID 2356 wrote to memory of 3020	2356	BESTDISCORDIPPULLERMAMBAPULLER.exe	110
PID 2356 wrote to memory of 1312	2356	BESTDISCORDIPPULLERMAMBAPULLER.exe	112
PID 2356 wrote to memory of 1312	2356	BESTDISCORDIPPULLERMAMBAPULLER.exe	112
PID 2356 wrote to memory of 3184	2356	BESTDISCORDIPPULLERMAMBAPULLER.exe	114
PID 2356 wrote to memory of 3184	2356	BESTDISCORDIPPULLERMAMBAPULLER.exe	114
PID 3184 wrote to memory of 4036	3184	cmd.exe	116
PID 3184 wrote to memory of 4036	3184	cmd.exe	116

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

Processes:

attrib.exe

pid	Process
2596	attrib.exe

C:\Users\Admin\AppData\Local\Temp\BESTDISCORDIPPULLERMAMBAPULLER.exe
"C:\Users\Admin\AppData\Local\Temp\BESTDISCORDIPPULLERMAMBAPULLER.exe"
1⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2356
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:4824
- C:\Windows\SYSTEM32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\BESTDISCORDIPPULLERMAMBAPULLER.exe"
  2⤵
  - Views/modifies file attributes
  PID:2596
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\BESTDISCORDIPPULLERMAMBAPULLER.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3732
- 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:3028
- 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:3160
- 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:916
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:3196
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:4128
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:4844
- 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:3020
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:1312
- C:\Windows\SYSTEM32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\BESTDISCORDIPPULLERMAMBAPULLER.exe" && pause
  2⤵
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:3184
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:4036

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\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
77d622bb1a5b250869a3238b9bc1402b

SHA1
d47f4003c2554b9dfc4c16f22460b331886b191b

SHA256
f97ff12a8abf4bf88bb6497bd2ac2da12628c8847a8ba5a9026bdbb76507cdfb

SHA512
d6789b5499f23c9035375a102271e17a8a82e57d6f5312fa24242e08a83efdeb8becb7622f55c4cf1b89c7d864b445df11f4d994cf7e2f87a900535bcca12fd9

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

Filesize
948B

MD5
c65738617888921a153bd9b1ef516ee7

SHA1
5245e71ea3c181d76320c857b639272ac9e079b1

SHA256
4640ba4001fd16a593315299cbdd4988dc2c7075820687f1018aac40aca95c26

SHA512
2e2a0ebd93f9d8dd07a7599054bce232683e9add9a35e77b584618040bcfd84a42545352519ec4736cc379002210b6f3ed2d905591c6925c0981b0392b495bfa

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
ee8d073cdd8102a80c44488493c923f4

SHA1
a62b0420867f69058cc8825f9367495600f73478

SHA256
2c51ebcc061eb2c5ac2400aebda8359e05db51ef434dd665f5ac08418463f573

SHA512
617ae082d9e4f2e6504bca93d6f48502f3e3e649ca9db421da28776f6f5adfa51746bc1be444be7e98ff1e80f61ceefca18a9ac5be34a7ea09f8cf5a81ad6512

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_lp2njje0.z1p.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/2356-34-0x000002E3F1800000-0x000002E3F181E000-memory.dmp

Filesize
120KB

Download
memory/2356-32-0x000002E3F1760000-0x000002E3F17D6000-memory.dmp

Filesize
472KB

Download
memory/2356-33-0x000002E3F1600000-0x000002E3F1650000-memory.dmp

Filesize
320KB

Download
memory/2356-0-0x00007FF8BE713000-0x00007FF8BE715000-memory.dmp

Filesize
8KB

Download
memory/2356-2-0x00007FF8BE710000-0x00007FF8BF1D1000-memory.dmp

Filesize
10.8MB

Download
memory/2356-71-0x000002E3F15F0000-0x000002E3F15FA000-memory.dmp

Filesize
40KB

Download
memory/2356-72-0x000002E3F1820000-0x000002E3F1832000-memory.dmp

Filesize
72KB

Download
memory/2356-1-0x000002E3EEFF0000-0x000002E3EF030000-memory.dmp

Filesize
256KB

Download
memory/2356-92-0x00007FF8BE710000-0x00007FF8BF1D1000-memory.dmp

Filesize
10.8MB

Download
memory/3732-17-0x00007FF8BE710000-0x00007FF8BF1D1000-memory.dmp

Filesize
10.8MB

Download
memory/3732-10-0x000002D28EA00000-0x000002D28EA22000-memory.dmp

Filesize
136KB

Download
memory/3732-4-0x00007FF8BE710000-0x00007FF8BF1D1000-memory.dmp

Filesize
10.8MB

Download
memory/3732-3-0x00007FF8BE710000-0x00007FF8BF1D1000-memory.dmp

Filesize
10.8MB

Download