umbral | ec3e59d47b01bb3c53ec23cb06829a302e9c6385a7898460138249de6f0cd4b6

Analysis

max time kernel
94s
max time network
141s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
28-11-2024 22:01

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General

Target

NursultanRealese.exe
Size

245KB
MD5

cd46141c0f7707d1b4be3187a4c922cd
SHA1

36ff990729059807dd86027fb11a5ba26609588c
SHA256

ec3e59d47b01bb3c53ec23cb06829a302e9c6385a7898460138249de6f0cd4b6
SHA512

61f82d754268476ece6e2b83e71494f32feecee37366542fbfa533a57c8aeb2b8f00ce4bcc30ca4730594eafe0ae8e0aca5660009f6d40a1b05895a4cb385c27
SSDEEP

6144:dloZM+rIkd8g+EtXHkv/iD4ZHPtxd58e1my+Jizq6:/oZtL+EP8R1xznhz

Score

10^/10

umbral discovery execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral2/memory/556-1-0x0000020DDCBD0000-0x0000020DDCC14000-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
4252	powershell.exe
2376	powershell.exe
1040	powershell.exe
4332	powershell.exe

Drops file in Drivers directory 1 IoCs

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

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
2224	PING.EXE
232	cmd.exe

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
4280	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2224	PING.EXE

Suspicious behavior: EnumeratesProcesses 11 IoCs

pid	Process
556	NursultanRealese.exe
4332	powershell.exe
4332	powershell.exe
4252	powershell.exe
4252	powershell.exe
2376	powershell.exe
2376	powershell.exe
3828	powershell.exe
3828	powershell.exe
1040	powershell.exe
1040	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	556	NursultanRealese.exe
Token: SeIncreaseQuotaPrivilege	4344	wmic.exe
Token: SeSecurityPrivilege	4344	wmic.exe
Token: SeTakeOwnershipPrivilege	4344	wmic.exe
Token: SeLoadDriverPrivilege	4344	wmic.exe
Token: SeSystemProfilePrivilege	4344	wmic.exe
Token: SeSystemtimePrivilege	4344	wmic.exe
Token: SeProfSingleProcessPrivilege	4344	wmic.exe
Token: SeIncBasePriorityPrivilege	4344	wmic.exe
Token: SeCreatePagefilePrivilege	4344	wmic.exe
Token: SeBackupPrivilege	4344	wmic.exe
Token: SeRestorePrivilege	4344	wmic.exe
Token: SeShutdownPrivilege	4344	wmic.exe
Token: SeDebugPrivilege	4344	wmic.exe
Token: SeSystemEnvironmentPrivilege	4344	wmic.exe
Token: SeRemoteShutdownPrivilege	4344	wmic.exe
Token: SeUndockPrivilege	4344	wmic.exe
Token: SeManageVolumePrivilege	4344	wmic.exe
Token: 33	4344	wmic.exe
Token: 34	4344	wmic.exe
Token: 35	4344	wmic.exe
Token: 36	4344	wmic.exe
Token: SeIncreaseQuotaPrivilege	4344	wmic.exe
Token: SeSecurityPrivilege	4344	wmic.exe
Token: SeTakeOwnershipPrivilege	4344	wmic.exe
Token: SeLoadDriverPrivilege	4344	wmic.exe
Token: SeSystemProfilePrivilege	4344	wmic.exe
Token: SeSystemtimePrivilege	4344	wmic.exe
Token: SeProfSingleProcessPrivilege	4344	wmic.exe
Token: SeIncBasePriorityPrivilege	4344	wmic.exe
Token: SeCreatePagefilePrivilege	4344	wmic.exe
Token: SeBackupPrivilege	4344	wmic.exe
Token: SeRestorePrivilege	4344	wmic.exe
Token: SeShutdownPrivilege	4344	wmic.exe
Token: SeDebugPrivilege	4344	wmic.exe
Token: SeSystemEnvironmentPrivilege	4344	wmic.exe
Token: SeRemoteShutdownPrivilege	4344	wmic.exe
Token: SeUndockPrivilege	4344	wmic.exe
Token: SeManageVolumePrivilege	4344	wmic.exe
Token: 33	4344	wmic.exe
Token: 34	4344	wmic.exe
Token: 35	4344	wmic.exe
Token: 36	4344	wmic.exe
Token: SeDebugPrivilege	4332	powershell.exe
Token: SeDebugPrivilege	4252	powershell.exe
Token: SeDebugPrivilege	2376	powershell.exe
Token: SeDebugPrivilege	3828	powershell.exe
Token: SeIncreaseQuotaPrivilege	3524	wmic.exe
Token: SeSecurityPrivilege	3524	wmic.exe
Token: SeTakeOwnershipPrivilege	3524	wmic.exe
Token: SeLoadDriverPrivilege	3524	wmic.exe
Token: SeSystemProfilePrivilege	3524	wmic.exe
Token: SeSystemtimePrivilege	3524	wmic.exe
Token: SeProfSingleProcessPrivilege	3524	wmic.exe
Token: SeIncBasePriorityPrivilege	3524	wmic.exe
Token: SeCreatePagefilePrivilege	3524	wmic.exe
Token: SeBackupPrivilege	3524	wmic.exe
Token: SeRestorePrivilege	3524	wmic.exe
Token: SeShutdownPrivilege	3524	wmic.exe
Token: SeDebugPrivilege	3524	wmic.exe
Token: SeSystemEnvironmentPrivilege	3524	wmic.exe
Token: SeRemoteShutdownPrivilege	3524	wmic.exe
Token: SeUndockPrivilege	3524	wmic.exe
Token: SeManageVolumePrivilege	3524	wmic.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 556 wrote to memory of 4344	556	NursultanRealese.exe	83
PID 556 wrote to memory of 4344	556	NursultanRealese.exe	83
PID 556 wrote to memory of 4624	556	NursultanRealese.exe	86
PID 556 wrote to memory of 4624	556	NursultanRealese.exe	86
PID 556 wrote to memory of 4332	556	NursultanRealese.exe	88
PID 556 wrote to memory of 4332	556	NursultanRealese.exe	88
PID 556 wrote to memory of 4252	556	NursultanRealese.exe	90
PID 556 wrote to memory of 4252	556	NursultanRealese.exe	90
PID 556 wrote to memory of 2376	556	NursultanRealese.exe	92
PID 556 wrote to memory of 2376	556	NursultanRealese.exe	92
PID 556 wrote to memory of 3828	556	NursultanRealese.exe	94
PID 556 wrote to memory of 3828	556	NursultanRealese.exe	94
PID 556 wrote to memory of 3524	556	NursultanRealese.exe	98
PID 556 wrote to memory of 3524	556	NursultanRealese.exe	98
PID 556 wrote to memory of 4924	556	NursultanRealese.exe	100
PID 556 wrote to memory of 4924	556	NursultanRealese.exe	100
PID 556 wrote to memory of 2212	556	NursultanRealese.exe	102
PID 556 wrote to memory of 2212	556	NursultanRealese.exe	102
PID 556 wrote to memory of 1040	556	NursultanRealese.exe	104
PID 556 wrote to memory of 1040	556	NursultanRealese.exe	104
PID 556 wrote to memory of 4280	556	NursultanRealese.exe	106
PID 556 wrote to memory of 4280	556	NursultanRealese.exe	106
PID 556 wrote to memory of 232	556	NursultanRealese.exe	110
PID 556 wrote to memory of 232	556	NursultanRealese.exe	110
PID 232 wrote to memory of 2224	232	cmd.exe	112
PID 232 wrote to memory of 2224	232	cmd.exe	112

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
4624	attrib.exe

C:\Users\Admin\AppData\Local\Temp\NursultanRealese.exe
"C:\Users\Admin\AppData\Local\Temp\NursultanRealese.exe"
1⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:556
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:4344
- C:\Windows\SYSTEM32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\NursultanRealese.exe"
  2⤵
  - Views/modifies file attributes
  PID:4624
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\NursultanRealese.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4332
- 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:4252
- 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:2376
- 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:3828
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:3524
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:4924
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:2212
- 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:1040
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:4280
- C:\Windows\SYSTEM32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\NursultanRealese.exe" && pause
  2⤵
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:232
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:2224

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
ec79fae4e7c09310ebf4f2d85a33a638

SHA1
f2bdd995b12e65e7ed437d228f22223b59e76efb

SHA256
e9c4723a5fe34e081c3d2f548a1d472394cc7aa58056fcf44ca542061381243a

SHA512
af9dda12f6bb388d826fe03a4a8beed9bda23a978aa55a2af6a43271660ee896a7ee3bcf2c4d2f1e6180902791d8c23560f1c2ec097a501d8c6f4f6c49075625

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_rhysiktb.okd.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/556-72-0x0000020DF71C0000-0x0000020DF71CA000-memory.dmp

Filesize
40KB

Download
memory/556-35-0x0000020DF7180000-0x0000020DF719E000-memory.dmp

Filesize
120KB

Download
memory/556-93-0x00007FFB290C0000-0x00007FFB29B81000-memory.dmp

Filesize
10.8MB

Download
memory/556-73-0x0000020DF7350000-0x0000020DF7362000-memory.dmp

Filesize
72KB

Download
memory/556-2-0x00007FFB290C0000-0x00007FFB29B81000-memory.dmp

Filesize
10.8MB

Download
memory/556-33-0x0000020DF7380000-0x0000020DF73F6000-memory.dmp

Filesize
472KB

Download
memory/556-34-0x0000020DF7300000-0x0000020DF7350000-memory.dmp

Filesize
320KB

Download
memory/556-0-0x00007FFB290C3000-0x00007FFB290C5000-memory.dmp

Filesize
8KB

Download
memory/556-1-0x0000020DDCBD0000-0x0000020DDCC14000-memory.dmp

Filesize
272KB

Download
memory/4332-15-0x00007FFB290C0000-0x00007FFB29B81000-memory.dmp

Filesize
10.8MB

Download
memory/4332-10-0x0000018CC2E20000-0x0000018CC2E42000-memory.dmp

Filesize
136KB

Download
memory/4332-11-0x00007FFB290C0000-0x00007FFB29B81000-memory.dmp

Filesize
10.8MB

Download
memory/4332-14-0x00007FFB290C0000-0x00007FFB29B81000-memory.dmp

Filesize
10.8MB

Download
memory/4332-18-0x00007FFB290C0000-0x00007FFB29B81000-memory.dmp

Filesize
10.8MB

Download