umbral | aa59ece71acd81ec09202b22af8e1a9d5664412d9bc99c9aa8ea1522467cc128

Analysis

max time kernel
144s
max time network
107s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
17-10-2024 20:54

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General

Target

test.exe
Size

227KB
MD5

7132f3f19b959294d470c06af357e192
SHA1

feb85b0836d9a52af2648174e4f53268ca20a309
SHA256

aa59ece71acd81ec09202b22af8e1a9d5664412d9bc99c9aa8ea1522467cc128
SHA512

b2dc88639c96e83a7138c361f43b52bdd62aa17af347fe46b1c007752c6c3e745e3188c6d8e89e4fcf68a506135eb94e9afa190a9b06acbd6304cc3d37ef2491
SSDEEP

6144:eloZM9rIkd8g+EtXHkv/iD40tVZQWRJ66vSgR1EsUcb8e1myi:IoZOL+EP80tVZQWRJ66vSgR1Eu8

Score

10^/10

umbral discovery execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral2/memory/1644-1-0x000002A476BA0000-0x000002A476BE0000-memory.dmp	family_umbral

Umbral
Umbral stealer is an opensource moduler stealer written in C#.
stealer umbral

Command and Scripting Interpreter: PowerShell 1 TTPs 4 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
2716	powershell.exe
1416	powershell.exe
232	powershell.exe
4056	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	test.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
30	discord.com
31	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
25	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
3492	cmd.exe
3068	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
772	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
3068	PING.EXE

Suspicious behavior: EnumeratesProcesses 10 IoCs

pid	Process
4056	powershell.exe
4056	powershell.exe
2716	powershell.exe
2716	powershell.exe
1416	powershell.exe
1416	powershell.exe
1712	powershell.exe
1712	powershell.exe
232	powershell.exe
232	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	1644	test.exe
Token: SeDebugPrivilege	4056	powershell.exe
Token: SeDebugPrivilege	2716	powershell.exe
Token: SeDebugPrivilege	1416	powershell.exe
Token: SeDebugPrivilege	1712	powershell.exe
Token: SeIncreaseQuotaPrivilege	2216	wmic.exe
Token: SeSecurityPrivilege	2216	wmic.exe
Token: SeTakeOwnershipPrivilege	2216	wmic.exe
Token: SeLoadDriverPrivilege	2216	wmic.exe
Token: SeSystemProfilePrivilege	2216	wmic.exe
Token: SeSystemtimePrivilege	2216	wmic.exe
Token: SeProfSingleProcessPrivilege	2216	wmic.exe
Token: SeIncBasePriorityPrivilege	2216	wmic.exe
Token: SeCreatePagefilePrivilege	2216	wmic.exe
Token: SeBackupPrivilege	2216	wmic.exe
Token: SeRestorePrivilege	2216	wmic.exe
Token: SeShutdownPrivilege	2216	wmic.exe
Token: SeDebugPrivilege	2216	wmic.exe
Token: SeSystemEnvironmentPrivilege	2216	wmic.exe
Token: SeRemoteShutdownPrivilege	2216	wmic.exe
Token: SeUndockPrivilege	2216	wmic.exe
Token: SeManageVolumePrivilege	2216	wmic.exe
Token: 33	2216	wmic.exe
Token: 34	2216	wmic.exe
Token: 35	2216	wmic.exe
Token: 36	2216	wmic.exe
Token: SeIncreaseQuotaPrivilege	2216	wmic.exe
Token: SeSecurityPrivilege	2216	wmic.exe
Token: SeTakeOwnershipPrivilege	2216	wmic.exe
Token: SeLoadDriverPrivilege	2216	wmic.exe
Token: SeSystemProfilePrivilege	2216	wmic.exe
Token: SeSystemtimePrivilege	2216	wmic.exe
Token: SeProfSingleProcessPrivilege	2216	wmic.exe
Token: SeIncBasePriorityPrivilege	2216	wmic.exe
Token: SeCreatePagefilePrivilege	2216	wmic.exe
Token: SeBackupPrivilege	2216	wmic.exe
Token: SeRestorePrivilege	2216	wmic.exe
Token: SeShutdownPrivilege	2216	wmic.exe
Token: SeDebugPrivilege	2216	wmic.exe
Token: SeSystemEnvironmentPrivilege	2216	wmic.exe
Token: SeRemoteShutdownPrivilege	2216	wmic.exe
Token: SeUndockPrivilege	2216	wmic.exe
Token: SeManageVolumePrivilege	2216	wmic.exe
Token: 33	2216	wmic.exe
Token: 34	2216	wmic.exe
Token: 35	2216	wmic.exe
Token: 36	2216	wmic.exe
Token: SeIncreaseQuotaPrivilege	2640	wmic.exe
Token: SeSecurityPrivilege	2640	wmic.exe
Token: SeTakeOwnershipPrivilege	2640	wmic.exe
Token: SeLoadDriverPrivilege	2640	wmic.exe
Token: SeSystemProfilePrivilege	2640	wmic.exe
Token: SeSystemtimePrivilege	2640	wmic.exe
Token: SeProfSingleProcessPrivilege	2640	wmic.exe
Token: SeIncBasePriorityPrivilege	2640	wmic.exe
Token: SeCreatePagefilePrivilege	2640	wmic.exe
Token: SeBackupPrivilege	2640	wmic.exe
Token: SeRestorePrivilege	2640	wmic.exe
Token: SeShutdownPrivilege	2640	wmic.exe
Token: SeDebugPrivilege	2640	wmic.exe
Token: SeSystemEnvironmentPrivilege	2640	wmic.exe
Token: SeRemoteShutdownPrivilege	2640	wmic.exe
Token: SeUndockPrivilege	2640	wmic.exe
Token: SeManageVolumePrivilege	2640	wmic.exe

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 1644 wrote to memory of 2348	1644	test.exe	84
PID 1644 wrote to memory of 2348	1644	test.exe	84
PID 1644 wrote to memory of 4056	1644	test.exe	86
PID 1644 wrote to memory of 4056	1644	test.exe	86
PID 1644 wrote to memory of 2716	1644	test.exe	91
PID 1644 wrote to memory of 2716	1644	test.exe	91
PID 1644 wrote to memory of 1416	1644	test.exe	93
PID 1644 wrote to memory of 1416	1644	test.exe	93
PID 1644 wrote to memory of 1712	1644	test.exe	95
PID 1644 wrote to memory of 1712	1644	test.exe	95
PID 1644 wrote to memory of 2216	1644	test.exe	97
PID 1644 wrote to memory of 2216	1644	test.exe	97
PID 1644 wrote to memory of 2640	1644	test.exe	100
PID 1644 wrote to memory of 2640	1644	test.exe	100
PID 1644 wrote to memory of 1480	1644	test.exe	102
PID 1644 wrote to memory of 1480	1644	test.exe	102
PID 1644 wrote to memory of 232	1644	test.exe	104
PID 1644 wrote to memory of 232	1644	test.exe	104
PID 1644 wrote to memory of 772	1644	test.exe	108
PID 1644 wrote to memory of 772	1644	test.exe	108
PID 1644 wrote to memory of 3492	1644	test.exe	112
PID 1644 wrote to memory of 3492	1644	test.exe	112
PID 3492 wrote to memory of 3068	3492	cmd.exe	114
PID 3492 wrote to memory of 3068	3492	cmd.exe	114

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
2348	attrib.exe

C:\Users\Admin\AppData\Local\Temp\test.exe
"C:\Users\Admin\AppData\Local\Temp\test.exe"
1⤵
- Drops file in Drivers directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1644
- C:\Windows\SYSTEM32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\test.exe"
  2⤵
  - Views/modifies file attributes
  PID:2348
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\test.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4056
- 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:2716
- 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:1416
- 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:1712
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2216
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2640
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:1480
- 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:232
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:772
- C:\Windows\SYSTEM32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\test.exe" && pause
  2⤵
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:3492
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:3068

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
5824a6037c081fda5d46de274b6e2799

SHA1
526367a09300cbde430e8fb44e41cbe7a0937aac

SHA256
4d610d9cd32a20279c7133a726ff61820d6930e5aa18253ee1422f3a6f54953f

SHA512
a109b150f730cda78d5bee106bd232f9dca7500dfb7899c6919de2bd542e345ca271aa11809a24ea0a27dca158067ab3a2d5688ac0a2325185143245f1665582

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
ab557c27e88b71482d3955d56e8bbe66

SHA1
9f60c2b4cda6bed0edaf4fd400202b9f9246c51b

SHA256
98c8030cbd7f8213b8b28f6e8ac65ddfc5ca65a3c9f93b9c73ed26b676faa436

SHA512
81bc61cd7607485c0e42782de65d5991e84cdbbae96f81c757b2d5bfb1a722e20d4c960234d10b7d14a2696019fe31315939da457d1bc692b03d2c661982405a

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_zsymhm1u.auw.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1644-72-0x000002A479290000-0x000002A47929A000-memory.dmp

Filesize
40KB

Download
memory/1644-35-0x000002A479250000-0x000002A47926E000-memory.dmp

Filesize
120KB

Download
memory/1644-93-0x00007FFA97140000-0x00007FFA97C01000-memory.dmp

Filesize
10.8MB

Download
memory/1644-73-0x000002A47A180000-0x000002A47A192000-memory.dmp

Filesize
72KB

Download
memory/1644-2-0x00007FFA97140000-0x00007FFA97C01000-memory.dmp

Filesize
10.8MB

Download
memory/1644-33-0x000002A479330000-0x000002A4793A6000-memory.dmp

Filesize
472KB

Download
memory/1644-34-0x000002A4792A0000-0x000002A4792F0000-memory.dmp

Filesize
320KB

Download
memory/1644-0-0x00007FFA97143000-0x00007FFA97145000-memory.dmp

Filesize
8KB

Download
memory/1644-1-0x000002A476BA0000-0x000002A476BE0000-memory.dmp

Filesize
256KB

Download
memory/4056-15-0x00007FFA97140000-0x00007FFA97C01000-memory.dmp

Filesize
10.8MB

Download
memory/4056-9-0x000001AEDD5B0000-0x000001AEDD5D2000-memory.dmp

Filesize
136KB

Download
memory/4056-3-0x00007FFA97140000-0x00007FFA97C01000-memory.dmp

Filesize
10.8MB

Download
memory/4056-14-0x00007FFA97140000-0x00007FFA97C01000-memory.dmp

Filesize
10.8MB

Download
memory/4056-18-0x00007FFA97140000-0x00007FFA97C01000-memory.dmp

Filesize
10.8MB

Download