umbral | 9ff459396b1f4de8dbca8a866ff3b9e4a46c48a9dc1071812a256fe21349caf9

Analysis

max time kernel
23s
max time network
25s
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 13:33

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General

Target

BEST DISCORD IP PULLER !MAMBAPULLER.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/344-1-0x0000023DF7FC0000-0x0000023DF8000000-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
3512	powershell.exe
4616	powershell.exe
3852	powershell.exe
2076	powershell.exe

Drops file in Drivers directory 1 IoCs

Processes:

BEST DISCORD IP PULLER !MAMBAPULLER.exe

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	BEST DISCORD IP PULLER !MAMBAPULLER.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
21	discord.com
20	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
5	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
4564	cmd.exe
2376	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
4064	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

Processes:

PING.EXE

pid	Process
2376	PING.EXE

Suspicious behavior: EnumeratesProcesses 11 IoCs

Processes:

BEST DISCORD IP PULLER !MAMBAPULLER.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exe

pid	Process
344	BEST DISCORD IP PULLER !MAMBAPULLER.exe
2076	powershell.exe
2076	powershell.exe
3512	powershell.exe
3512	powershell.exe
4616	powershell.exe
4616	powershell.exe
2080	powershell.exe
2080	powershell.exe
3852	powershell.exe
3852	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

Processes:

BEST DISCORD IP PULLER !MAMBAPULLER.exewmic.exepowershell.exepowershell.exepowershell.exepowershell.exewmic.exe

description	pid	Process
Token: SeDebugPrivilege	344	BEST DISCORD IP PULLER !MAMBAPULLER.exe
Token: SeIncreaseQuotaPrivilege	3092	wmic.exe
Token: SeSecurityPrivilege	3092	wmic.exe
Token: SeTakeOwnershipPrivilege	3092	wmic.exe
Token: SeLoadDriverPrivilege	3092	wmic.exe
Token: SeSystemProfilePrivilege	3092	wmic.exe
Token: SeSystemtimePrivilege	3092	wmic.exe
Token: SeProfSingleProcessPrivilege	3092	wmic.exe
Token: SeIncBasePriorityPrivilege	3092	wmic.exe
Token: SeCreatePagefilePrivilege	3092	wmic.exe
Token: SeBackupPrivilege	3092	wmic.exe
Token: SeRestorePrivilege	3092	wmic.exe
Token: SeShutdownPrivilege	3092	wmic.exe
Token: SeDebugPrivilege	3092	wmic.exe
Token: SeSystemEnvironmentPrivilege	3092	wmic.exe
Token: SeRemoteShutdownPrivilege	3092	wmic.exe
Token: SeUndockPrivilege	3092	wmic.exe
Token: SeManageVolumePrivilege	3092	wmic.exe
Token: 33	3092	wmic.exe
Token: 34	3092	wmic.exe
Token: 35	3092	wmic.exe
Token: 36	3092	wmic.exe
Token: SeIncreaseQuotaPrivilege	3092	wmic.exe
Token: SeSecurityPrivilege	3092	wmic.exe
Token: SeTakeOwnershipPrivilege	3092	wmic.exe
Token: SeLoadDriverPrivilege	3092	wmic.exe
Token: SeSystemProfilePrivilege	3092	wmic.exe
Token: SeSystemtimePrivilege	3092	wmic.exe
Token: SeProfSingleProcessPrivilege	3092	wmic.exe
Token: SeIncBasePriorityPrivilege	3092	wmic.exe
Token: SeCreatePagefilePrivilege	3092	wmic.exe
Token: SeBackupPrivilege	3092	wmic.exe
Token: SeRestorePrivilege	3092	wmic.exe
Token: SeShutdownPrivilege	3092	wmic.exe
Token: SeDebugPrivilege	3092	wmic.exe
Token: SeSystemEnvironmentPrivilege	3092	wmic.exe
Token: SeRemoteShutdownPrivilege	3092	wmic.exe
Token: SeUndockPrivilege	3092	wmic.exe
Token: SeManageVolumePrivilege	3092	wmic.exe
Token: 33	3092	wmic.exe
Token: 34	3092	wmic.exe
Token: 35	3092	wmic.exe
Token: 36	3092	wmic.exe
Token: SeDebugPrivilege	2076	powershell.exe
Token: SeDebugPrivilege	3512	powershell.exe
Token: SeDebugPrivilege	4616	powershell.exe
Token: SeDebugPrivilege	2080	powershell.exe
Token: SeIncreaseQuotaPrivilege	5052	wmic.exe
Token: SeSecurityPrivilege	5052	wmic.exe
Token: SeTakeOwnershipPrivilege	5052	wmic.exe
Token: SeLoadDriverPrivilege	5052	wmic.exe
Token: SeSystemProfilePrivilege	5052	wmic.exe
Token: SeSystemtimePrivilege	5052	wmic.exe
Token: SeProfSingleProcessPrivilege	5052	wmic.exe
Token: SeIncBasePriorityPrivilege	5052	wmic.exe
Token: SeCreatePagefilePrivilege	5052	wmic.exe
Token: SeBackupPrivilege	5052	wmic.exe
Token: SeRestorePrivilege	5052	wmic.exe
Token: SeShutdownPrivilege	5052	wmic.exe
Token: SeDebugPrivilege	5052	wmic.exe
Token: SeSystemEnvironmentPrivilege	5052	wmic.exe
Token: SeRemoteShutdownPrivilege	5052	wmic.exe
Token: SeUndockPrivilege	5052	wmic.exe
Token: SeManageVolumePrivilege	5052	wmic.exe

Suspicious use of WriteProcessMemory 26 IoCs

Processes:

BEST DISCORD IP PULLER !MAMBAPULLER.execmd.exe

description	pid	Process	procid_target
PID 344 wrote to memory of 3092	344	BEST DISCORD IP PULLER !MAMBAPULLER.exe	83
PID 344 wrote to memory of 3092	344	BEST DISCORD IP PULLER !MAMBAPULLER.exe	83
PID 344 wrote to memory of 4924	344	BEST DISCORD IP PULLER !MAMBAPULLER.exe	86
PID 344 wrote to memory of 4924	344	BEST DISCORD IP PULLER !MAMBAPULLER.exe	86
PID 344 wrote to memory of 2076	344	BEST DISCORD IP PULLER !MAMBAPULLER.exe	88
PID 344 wrote to memory of 2076	344	BEST DISCORD IP PULLER !MAMBAPULLER.exe	88
PID 344 wrote to memory of 3512	344	BEST DISCORD IP PULLER !MAMBAPULLER.exe	90
PID 344 wrote to memory of 3512	344	BEST DISCORD IP PULLER !MAMBAPULLER.exe	90
PID 344 wrote to memory of 4616	344	BEST DISCORD IP PULLER !MAMBAPULLER.exe	92
PID 344 wrote to memory of 4616	344	BEST DISCORD IP PULLER !MAMBAPULLER.exe	92
PID 344 wrote to memory of 2080	344	BEST DISCORD IP PULLER !MAMBAPULLER.exe	94
PID 344 wrote to memory of 2080	344	BEST DISCORD IP PULLER !MAMBAPULLER.exe	94
PID 344 wrote to memory of 5052	344	BEST DISCORD IP PULLER !MAMBAPULLER.exe	97
PID 344 wrote to memory of 5052	344	BEST DISCORD IP PULLER !MAMBAPULLER.exe	97
PID 344 wrote to memory of 404	344	BEST DISCORD IP PULLER !MAMBAPULLER.exe	99
PID 344 wrote to memory of 404	344	BEST DISCORD IP PULLER !MAMBAPULLER.exe	99
PID 344 wrote to memory of 1120	344	BEST DISCORD IP PULLER !MAMBAPULLER.exe	101
PID 344 wrote to memory of 1120	344	BEST DISCORD IP PULLER !MAMBAPULLER.exe	101
PID 344 wrote to memory of 3852	344	BEST DISCORD IP PULLER !MAMBAPULLER.exe	103
PID 344 wrote to memory of 3852	344	BEST DISCORD IP PULLER !MAMBAPULLER.exe	103
PID 344 wrote to memory of 4064	344	BEST DISCORD IP PULLER !MAMBAPULLER.exe	105
PID 344 wrote to memory of 4064	344	BEST DISCORD IP PULLER !MAMBAPULLER.exe	105
PID 344 wrote to memory of 4564	344	BEST DISCORD IP PULLER !MAMBAPULLER.exe	107
PID 344 wrote to memory of 4564	344	BEST DISCORD IP PULLER !MAMBAPULLER.exe	107
PID 4564 wrote to memory of 2376	4564	cmd.exe	109
PID 4564 wrote to memory of 2376	4564	cmd.exe	109

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

Processes:

attrib.exe

pid	Process
4924	attrib.exe

C:\Users\Admin\AppData\Local\Temp\BEST DISCORD IP PULLER !MAMBAPULLER.exe
"C:\Users\Admin\AppData\Local\Temp\BEST DISCORD IP PULLER !MAMBAPULLER.exe"
1⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:344
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:3092
- C:\Windows\SYSTEM32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\BEST DISCORD IP PULLER !MAMBAPULLER.exe"
  2⤵
  - Views/modifies file attributes
  PID:4924
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\BEST DISCORD IP PULLER !MAMBAPULLER.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2076
- 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:3512
- 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:4616
- 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:2080
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:5052
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:404
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:1120
- 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:3852
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:4064
- C:\Windows\SYSTEM32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\BEST DISCORD IP PULLER !MAMBAPULLER.exe" && pause
  2⤵
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:4564
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:2376

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
6d3e9c29fe44e90aae6ed30ccf799ca8

SHA1
c7974ef72264bbdf13a2793ccf1aed11bc565dce

SHA256
2360634e63e8f0b5748e2c56ebb8f4aa78e71008ea7b5c9ca1c49be03b49557d

SHA512
60c38c4367352537545d859f64b9c5cbada94240478d1d039fd27b5ecba4dc1c90051557c16d802269703b873546ead416279c0a80c6fd5e49ad361cef22596a

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

Filesize
948B

MD5
ecac37a294a8f17b9c89abc6354cb1fe

SHA1
b918fd8ca0ec11fc4a39633a8dc94abe60140eb9

SHA256
51037b293178bc395824bb6fd9b80ba7c23399c4e4a74f0bc067a557a1da9fb8

SHA512
7b5e3032a2848f46cbf330b06693304945e4257cc2a7220f28adaa7b71aad7f63872379aebe6f1cfb68b78a9605d3ed5c1ddc6549f720e9bb7ac95b1c2a0ed64

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

Filesize
1KB

MD5
276798eeb29a49dc6e199768bc9c2e71

SHA1
5fdc8ccb897ac2df7476fbb07517aca5b7a6205b

SHA256
cd0a1056e8f1b6cb5cb328532239d802f4e2aa8f8fcdc0fcb487684bd68e0dcc

SHA512
0d34fce64bbefc57d64fa6e03ca886952263d5f24df9c1c4cce6a1e8f5a47a9a21e9820f8d38caa7f7b43a52336ce00b738ea18419aaa7c788b72e04ce19e4f2

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

Filesize
1KB

MD5
10ba86da9ff84898c8fba3a480b77ad3

SHA1
849ea85ff7eba5be437fb4f014844a37e58bdda3

SHA256
b8b3fa7b92cf9e1dbb3971fab7694779dbee7e9e1cf572f827e16ae4d74add61

SHA512
2844d45653c22f910f53e4a84eed8f4f99a3d51a1e8ce48e4077645b3218b2471adb63fa9ea332ac396115b31621e5ed933eed2b8ea4a0c8e10d3af50517142d

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_0rxqahlc.gtu.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/344-72-0x0000023DFA6F0000-0x0000023DFA6FA000-memory.dmp

Filesize
40KB

Download
memory/344-35-0x0000023DFA5A0000-0x0000023DFA5BE000-memory.dmp

Filesize
120KB

Download
memory/344-95-0x00007FFB52730000-0x00007FFB531F1000-memory.dmp

Filesize
10.8MB

Download
memory/344-90-0x00007FFB52730000-0x00007FFB531F1000-memory.dmp

Filesize
10.8MB

Download
memory/344-2-0x00007FFB52730000-0x00007FFB531F1000-memory.dmp

Filesize
10.8MB

Download
memory/344-33-0x0000023DFA750000-0x0000023DFA7C6000-memory.dmp

Filesize
472KB

Download
memory/344-34-0x0000023DFA7D0000-0x0000023DFA820000-memory.dmp

Filesize
320KB

Download
memory/344-89-0x00007FFB52733000-0x00007FFB52735000-memory.dmp

Filesize
8KB

Download
memory/344-1-0x0000023DF7FC0000-0x0000023DF8000000-memory.dmp

Filesize
256KB

Download
memory/344-0-0x00007FFB52733000-0x00007FFB52735000-memory.dmp

Filesize
8KB

Download
memory/344-73-0x0000023DFA720000-0x0000023DFA732000-memory.dmp

Filesize
72KB

Download
memory/2076-4-0x00007FFB52730000-0x00007FFB531F1000-memory.dmp

Filesize
10.8MB

Download
memory/2076-5-0x00007FFB52730000-0x00007FFB531F1000-memory.dmp

Filesize
10.8MB

Download
memory/2076-15-0x000002A8CE360000-0x000002A8CE382000-memory.dmp

Filesize
136KB

Download
memory/2076-3-0x00007FFB52730000-0x00007FFB531F1000-memory.dmp

Filesize
10.8MB

Download
memory/2076-18-0x00007FFB52730000-0x00007FFB531F1000-memory.dmp

Filesize
10.8MB

Download