umbral | a5011c165dbd8459396a3b4f901c7faa668e95e395fb12d7c967c34c0d974355

Analysis

max time kernel
90s
max time network
137s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
14-12-2024 12:21

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General

Target

a5011c165dbd8459396a3b4f901c7faa668e95e395fb12d7c967c34c0d974355.exe
Size

231KB
MD5

230f75b72d5021a921637929a63cfd79
SHA1

71af2ee3489d49914f7c7fa4e16e8398e97e0fc8
SHA256

a5011c165dbd8459396a3b4f901c7faa668e95e395fb12d7c967c34c0d974355
SHA512

3dc11aac2231daf30871d30f43eba3eadf14f3b003dd1f81466cde021b0b59d38c5e9a320e6705b4f5a0eeebf93f9ee5459173e20de2ab3ae3f3e9988819f001
SSDEEP

6144:xloZMUrIkd8g+EtXHkv/iD4b3gulGELnsyd42X3Wc8b8e1mDQi:DoZrL+EP8b3gulGELnsyd42X3WxYJ

Score

10^/10

umbral discovery execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral2/memory/3636-1-0x00000252C5AA0000-0x00000252C5AE0000-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

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
2308	powershell.exe
4552	powershell.exe
432	powershell.exe
3200	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	a5011c165dbd8459396a3b4f901c7faa668e95e395fb12d7c967c34c0d974355.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
18	discord.com
19	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
15	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
3368	cmd.exe
400	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
1860	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
400	PING.EXE

Suspicious behavior: EnumeratesProcesses 10 IoCs

pid	Process
2308	powershell.exe
2308	powershell.exe
4552	powershell.exe
4552	powershell.exe
432	powershell.exe
432	powershell.exe
3512	powershell.exe
3512	powershell.exe
3200	powershell.exe
3200	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	3636	a5011c165dbd8459396a3b4f901c7faa668e95e395fb12d7c967c34c0d974355.exe
Token: SeDebugPrivilege	2308	powershell.exe
Token: SeDebugPrivilege	4552	powershell.exe
Token: SeDebugPrivilege	432	powershell.exe
Token: SeDebugPrivilege	3512	powershell.exe
Token: SeIncreaseQuotaPrivilege	4048	wmic.exe
Token: SeSecurityPrivilege	4048	wmic.exe
Token: SeTakeOwnershipPrivilege	4048	wmic.exe
Token: SeLoadDriverPrivilege	4048	wmic.exe
Token: SeSystemProfilePrivilege	4048	wmic.exe
Token: SeSystemtimePrivilege	4048	wmic.exe
Token: SeProfSingleProcessPrivilege	4048	wmic.exe
Token: SeIncBasePriorityPrivilege	4048	wmic.exe
Token: SeCreatePagefilePrivilege	4048	wmic.exe
Token: SeBackupPrivilege	4048	wmic.exe
Token: SeRestorePrivilege	4048	wmic.exe
Token: SeShutdownPrivilege	4048	wmic.exe
Token: SeDebugPrivilege	4048	wmic.exe
Token: SeSystemEnvironmentPrivilege	4048	wmic.exe
Token: SeRemoteShutdownPrivilege	4048	wmic.exe
Token: SeUndockPrivilege	4048	wmic.exe
Token: SeManageVolumePrivilege	4048	wmic.exe
Token: 33	4048	wmic.exe
Token: 34	4048	wmic.exe
Token: 35	4048	wmic.exe
Token: 36	4048	wmic.exe
Token: SeIncreaseQuotaPrivilege	4048	wmic.exe
Token: SeSecurityPrivilege	4048	wmic.exe
Token: SeTakeOwnershipPrivilege	4048	wmic.exe
Token: SeLoadDriverPrivilege	4048	wmic.exe
Token: SeSystemProfilePrivilege	4048	wmic.exe
Token: SeSystemtimePrivilege	4048	wmic.exe
Token: SeProfSingleProcessPrivilege	4048	wmic.exe
Token: SeIncBasePriorityPrivilege	4048	wmic.exe
Token: SeCreatePagefilePrivilege	4048	wmic.exe
Token: SeBackupPrivilege	4048	wmic.exe
Token: SeRestorePrivilege	4048	wmic.exe
Token: SeShutdownPrivilege	4048	wmic.exe
Token: SeDebugPrivilege	4048	wmic.exe
Token: SeSystemEnvironmentPrivilege	4048	wmic.exe
Token: SeRemoteShutdownPrivilege	4048	wmic.exe
Token: SeUndockPrivilege	4048	wmic.exe
Token: SeManageVolumePrivilege	4048	wmic.exe
Token: 33	4048	wmic.exe
Token: 34	4048	wmic.exe
Token: 35	4048	wmic.exe
Token: 36	4048	wmic.exe
Token: SeIncreaseQuotaPrivilege	3600	wmic.exe
Token: SeSecurityPrivilege	3600	wmic.exe
Token: SeTakeOwnershipPrivilege	3600	wmic.exe
Token: SeLoadDriverPrivilege	3600	wmic.exe
Token: SeSystemProfilePrivilege	3600	wmic.exe
Token: SeSystemtimePrivilege	3600	wmic.exe
Token: SeProfSingleProcessPrivilege	3600	wmic.exe
Token: SeIncBasePriorityPrivilege	3600	wmic.exe
Token: SeCreatePagefilePrivilege	3600	wmic.exe
Token: SeBackupPrivilege	3600	wmic.exe
Token: SeRestorePrivilege	3600	wmic.exe
Token: SeShutdownPrivilege	3600	wmic.exe
Token: SeDebugPrivilege	3600	wmic.exe
Token: SeSystemEnvironmentPrivilege	3600	wmic.exe
Token: SeRemoteShutdownPrivilege	3600	wmic.exe
Token: SeUndockPrivilege	3600	wmic.exe
Token: SeManageVolumePrivilege	3600	wmic.exe

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 3636 wrote to memory of 4084	3636	a5011c165dbd8459396a3b4f901c7faa668e95e395fb12d7c967c34c0d974355.exe	84
PID 3636 wrote to memory of 4084	3636	a5011c165dbd8459396a3b4f901c7faa668e95e395fb12d7c967c34c0d974355.exe	84
PID 3636 wrote to memory of 2308	3636	a5011c165dbd8459396a3b4f901c7faa668e95e395fb12d7c967c34c0d974355.exe	86
PID 3636 wrote to memory of 2308	3636	a5011c165dbd8459396a3b4f901c7faa668e95e395fb12d7c967c34c0d974355.exe	86
PID 3636 wrote to memory of 4552	3636	a5011c165dbd8459396a3b4f901c7faa668e95e395fb12d7c967c34c0d974355.exe	88
PID 3636 wrote to memory of 4552	3636	a5011c165dbd8459396a3b4f901c7faa668e95e395fb12d7c967c34c0d974355.exe	88
PID 3636 wrote to memory of 432	3636	a5011c165dbd8459396a3b4f901c7faa668e95e395fb12d7c967c34c0d974355.exe	90
PID 3636 wrote to memory of 432	3636	a5011c165dbd8459396a3b4f901c7faa668e95e395fb12d7c967c34c0d974355.exe	90
PID 3636 wrote to memory of 3512	3636	a5011c165dbd8459396a3b4f901c7faa668e95e395fb12d7c967c34c0d974355.exe	92
PID 3636 wrote to memory of 3512	3636	a5011c165dbd8459396a3b4f901c7faa668e95e395fb12d7c967c34c0d974355.exe	92
PID 3636 wrote to memory of 4048	3636	a5011c165dbd8459396a3b4f901c7faa668e95e395fb12d7c967c34c0d974355.exe	94
PID 3636 wrote to memory of 4048	3636	a5011c165dbd8459396a3b4f901c7faa668e95e395fb12d7c967c34c0d974355.exe	94
PID 3636 wrote to memory of 3600	3636	a5011c165dbd8459396a3b4f901c7faa668e95e395fb12d7c967c34c0d974355.exe	97
PID 3636 wrote to memory of 3600	3636	a5011c165dbd8459396a3b4f901c7faa668e95e395fb12d7c967c34c0d974355.exe	97
PID 3636 wrote to memory of 4812	3636	a5011c165dbd8459396a3b4f901c7faa668e95e395fb12d7c967c34c0d974355.exe	99
PID 3636 wrote to memory of 4812	3636	a5011c165dbd8459396a3b4f901c7faa668e95e395fb12d7c967c34c0d974355.exe	99
PID 3636 wrote to memory of 3200	3636	a5011c165dbd8459396a3b4f901c7faa668e95e395fb12d7c967c34c0d974355.exe	101
PID 3636 wrote to memory of 3200	3636	a5011c165dbd8459396a3b4f901c7faa668e95e395fb12d7c967c34c0d974355.exe	101
PID 3636 wrote to memory of 1860	3636	a5011c165dbd8459396a3b4f901c7faa668e95e395fb12d7c967c34c0d974355.exe	103
PID 3636 wrote to memory of 1860	3636	a5011c165dbd8459396a3b4f901c7faa668e95e395fb12d7c967c34c0d974355.exe	103
PID 3636 wrote to memory of 3368	3636	a5011c165dbd8459396a3b4f901c7faa668e95e395fb12d7c967c34c0d974355.exe	105
PID 3636 wrote to memory of 3368	3636	a5011c165dbd8459396a3b4f901c7faa668e95e395fb12d7c967c34c0d974355.exe	105
PID 3368 wrote to memory of 400	3368	cmd.exe	107
PID 3368 wrote to memory of 400	3368	cmd.exe	107

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
4084	attrib.exe

C:\Users\Admin\AppData\Local\Temp\a5011c165dbd8459396a3b4f901c7faa668e95e395fb12d7c967c34c0d974355.exe
"C:\Users\Admin\AppData\Local\Temp\a5011c165dbd8459396a3b4f901c7faa668e95e395fb12d7c967c34c0d974355.exe"
1⤵
- Drops file in Drivers directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3636
- C:\Windows\SYSTEM32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\a5011c165dbd8459396a3b4f901c7faa668e95e395fb12d7c967c34c0d974355.exe"
  2⤵
  - Views/modifies file attributes
  PID:4084
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\a5011c165dbd8459396a3b4f901c7faa668e95e395fb12d7c967c34c0d974355.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2308
- 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:4552
- 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:432
- 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:3512
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:4048
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:3600
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:4812
- 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:3200
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:1860
- C:\Windows\SYSTEM32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\a5011c165dbd8459396a3b4f901c7faa668e95e395fb12d7c967c34c0d974355.exe" && pause
  2⤵
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:3368
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:400

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
90c8020d02ac4b157ec228af068b9b3c

SHA1
f445e6cd6ba0aa9cd74c475a36101398e2096ba9

SHA256
f395f437592cbe83eae9afbfd6c12075cd9137c659fa876f587953a55f88c00d

SHA512
282cb07e02cee820046960e06e49e99af7399bd89506c4b6355edce39ba44e72eb553b4ad96a1f544ac70345c9e1800df9a517a6551ba36cf6801b26a4e33914

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
fff96a9d65369bc9135c8965ee5db902

SHA1
c618e616d8c5083d7b3c80eb9e59a68c1e0cca1a

SHA256
5b195da129d3d5f452c0a11fc71f20fb0d0ae65d2ba3aa8d88d252dcfde7ee3f

SHA512
5ee1ce7ab707162d2594efdbead15d35d621c3e12499a9994a26f2799d41a3d58a62df465126b841328fe7bc0530e46cc2c0f8ccae8a555634e22aa4e8866c9b

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_rshwbqvw.ooq.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/2308-13-0x00007FF80F380000-0x00007FF80FE41000-memory.dmp

Filesize
10.8MB

Download
memory/2308-14-0x00007FF80F380000-0x00007FF80FE41000-memory.dmp

Filesize
10.8MB

Download
memory/2308-15-0x00007FF80F380000-0x00007FF80FE41000-memory.dmp

Filesize
10.8MB

Download
memory/2308-18-0x00007FF80F380000-0x00007FF80FE41000-memory.dmp

Filesize
10.8MB

Download
memory/2308-9-0x0000021DCB390000-0x0000021DCB3B2000-memory.dmp

Filesize
136KB

Download
memory/3636-33-0x00000252E01B0000-0x00000252E0200000-memory.dmp

Filesize
320KB

Download
memory/3636-32-0x00000252E0230000-0x00000252E02A6000-memory.dmp

Filesize
472KB

Download
memory/3636-34-0x00000252E02F0000-0x00000252E030E000-memory.dmp

Filesize
120KB

Download
memory/3636-0-0x00007FF80F383000-0x00007FF80F385000-memory.dmp

Filesize
8KB

Download
memory/3636-1-0x00000252C5AA0000-0x00000252C5AE0000-memory.dmp

Filesize
256KB

Download
memory/3636-71-0x00000252C7990000-0x00000252C799A000-memory.dmp

Filesize
40KB

Download
memory/3636-72-0x00000252E0200000-0x00000252E0212000-memory.dmp

Filesize
72KB

Download
memory/3636-2-0x00007FF80F380000-0x00007FF80FE41000-memory.dmp

Filesize
10.8MB

Download
memory/3636-88-0x00007FF80F383000-0x00007FF80F385000-memory.dmp

Filesize
8KB

Download
memory/3636-93-0x00007FF80F380000-0x00007FF80FE41000-memory.dmp

Filesize
10.8MB

Download