umbral | 921ba78ef5661ee885d93756f28f7e4df163f1ea910af6c68266f856b112ce76

Analysis

max time kernel
119s
max time network
120s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
14-12-2024 11:59

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

921ba78ef5661ee885d93756f28f7e4df163f1ea910af6c68266f856b112ce76.exe
Size

231KB
MD5

85eadbe66e59f3512bfed3edd076ed4c
SHA1

3fac3f7414bd4ced53beb1d89402524a2b9cb510
SHA256

921ba78ef5661ee885d93756f28f7e4df163f1ea910af6c68266f856b112ce76
SHA512

18ca000aaec36bb3221cd70e042b1dd49ace60ff1469059eb4e27c0af8889d5dc31133827a97a8f146970097b70152e7e65d5286fa0721476c5b8cb06277637e
SSDEEP

6144:RloZM3rIkd8g+EtXHkv/iD4iYQ5ClU8e1mmN5i:joZIL+EP8Jo1Ng

Score

10^/10

umbral execution stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/2220-1-0x00000000002E0000-0x0000000000320000-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 3 IoCs

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

execution

PowerShell

T1059.001

pid	Process
2680	powershell.exe
2608	powershell.exe
2500	powershell.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service

T1102

flow	ioc
8	discord.com
9	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

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
2892	wmic.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
2680	powershell.exe
2608	powershell.exe
2500	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2220	921ba78ef5661ee885d93756f28f7e4df163f1ea910af6c68266f856b112ce76.exe
Token: SeDebugPrivilege	2680	powershell.exe
Token: SeDebugPrivilege	2608	powershell.exe
Token: SeIncreaseQuotaPrivilege	2172	wmic.exe
Token: SeSecurityPrivilege	2172	wmic.exe
Token: SeTakeOwnershipPrivilege	2172	wmic.exe
Token: SeLoadDriverPrivilege	2172	wmic.exe
Token: SeSystemProfilePrivilege	2172	wmic.exe
Token: SeSystemtimePrivilege	2172	wmic.exe
Token: SeProfSingleProcessPrivilege	2172	wmic.exe
Token: SeIncBasePriorityPrivilege	2172	wmic.exe
Token: SeCreatePagefilePrivilege	2172	wmic.exe
Token: SeBackupPrivilege	2172	wmic.exe
Token: SeRestorePrivilege	2172	wmic.exe
Token: SeShutdownPrivilege	2172	wmic.exe
Token: SeDebugPrivilege	2172	wmic.exe
Token: SeSystemEnvironmentPrivilege	2172	wmic.exe
Token: SeRemoteShutdownPrivilege	2172	wmic.exe
Token: SeUndockPrivilege	2172	wmic.exe
Token: SeManageVolumePrivilege	2172	wmic.exe
Token: 33	2172	wmic.exe
Token: 34	2172	wmic.exe
Token: 35	2172	wmic.exe
Token: SeIncreaseQuotaPrivilege	2172	wmic.exe
Token: SeSecurityPrivilege	2172	wmic.exe
Token: SeTakeOwnershipPrivilege	2172	wmic.exe
Token: SeLoadDriverPrivilege	2172	wmic.exe
Token: SeSystemProfilePrivilege	2172	wmic.exe
Token: SeSystemtimePrivilege	2172	wmic.exe
Token: SeProfSingleProcessPrivilege	2172	wmic.exe
Token: SeIncBasePriorityPrivilege	2172	wmic.exe
Token: SeCreatePagefilePrivilege	2172	wmic.exe
Token: SeBackupPrivilege	2172	wmic.exe
Token: SeRestorePrivilege	2172	wmic.exe
Token: SeShutdownPrivilege	2172	wmic.exe
Token: SeDebugPrivilege	2172	wmic.exe
Token: SeSystemEnvironmentPrivilege	2172	wmic.exe
Token: SeRemoteShutdownPrivilege	2172	wmic.exe
Token: SeUndockPrivilege	2172	wmic.exe
Token: SeManageVolumePrivilege	2172	wmic.exe
Token: 33	2172	wmic.exe
Token: 34	2172	wmic.exe
Token: 35	2172	wmic.exe
Token: SeIncreaseQuotaPrivilege	2980	wmic.exe
Token: SeSecurityPrivilege	2980	wmic.exe
Token: SeTakeOwnershipPrivilege	2980	wmic.exe
Token: SeLoadDriverPrivilege	2980	wmic.exe
Token: SeSystemProfilePrivilege	2980	wmic.exe
Token: SeSystemtimePrivilege	2980	wmic.exe
Token: SeProfSingleProcessPrivilege	2980	wmic.exe
Token: SeIncBasePriorityPrivilege	2980	wmic.exe
Token: SeCreatePagefilePrivilege	2980	wmic.exe
Token: SeBackupPrivilege	2980	wmic.exe
Token: SeRestorePrivilege	2980	wmic.exe
Token: SeShutdownPrivilege	2980	wmic.exe
Token: SeDebugPrivilege	2980	wmic.exe
Token: SeSystemEnvironmentPrivilege	2980	wmic.exe
Token: SeRemoteShutdownPrivilege	2980	wmic.exe
Token: SeUndockPrivilege	2980	wmic.exe
Token: SeManageVolumePrivilege	2980	wmic.exe
Token: 33	2980	wmic.exe
Token: 34	2980	wmic.exe
Token: 35	2980	wmic.exe
Token: SeIncreaseQuotaPrivilege	2980	wmic.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 2220 wrote to memory of 2680	2220	921ba78ef5661ee885d93756f28f7e4df163f1ea910af6c68266f856b112ce76.exe	30
PID 2220 wrote to memory of 2680	2220	921ba78ef5661ee885d93756f28f7e4df163f1ea910af6c68266f856b112ce76.exe	30
PID 2220 wrote to memory of 2680	2220	921ba78ef5661ee885d93756f28f7e4df163f1ea910af6c68266f856b112ce76.exe	30
PID 2220 wrote to memory of 2608	2220	921ba78ef5661ee885d93756f28f7e4df163f1ea910af6c68266f856b112ce76.exe	32
PID 2220 wrote to memory of 2608	2220	921ba78ef5661ee885d93756f28f7e4df163f1ea910af6c68266f856b112ce76.exe	32
PID 2220 wrote to memory of 2608	2220	921ba78ef5661ee885d93756f28f7e4df163f1ea910af6c68266f856b112ce76.exe	32
PID 2220 wrote to memory of 2172	2220	921ba78ef5661ee885d93756f28f7e4df163f1ea910af6c68266f856b112ce76.exe	34
PID 2220 wrote to memory of 2172	2220	921ba78ef5661ee885d93756f28f7e4df163f1ea910af6c68266f856b112ce76.exe	34
PID 2220 wrote to memory of 2172	2220	921ba78ef5661ee885d93756f28f7e4df163f1ea910af6c68266f856b112ce76.exe	34
PID 2220 wrote to memory of 2980	2220	921ba78ef5661ee885d93756f28f7e4df163f1ea910af6c68266f856b112ce76.exe	37
PID 2220 wrote to memory of 2980	2220	921ba78ef5661ee885d93756f28f7e4df163f1ea910af6c68266f856b112ce76.exe	37
PID 2220 wrote to memory of 2980	2220	921ba78ef5661ee885d93756f28f7e4df163f1ea910af6c68266f856b112ce76.exe	37
PID 2220 wrote to memory of 1932	2220	921ba78ef5661ee885d93756f28f7e4df163f1ea910af6c68266f856b112ce76.exe	39
PID 2220 wrote to memory of 1932	2220	921ba78ef5661ee885d93756f28f7e4df163f1ea910af6c68266f856b112ce76.exe	39
PID 2220 wrote to memory of 1932	2220	921ba78ef5661ee885d93756f28f7e4df163f1ea910af6c68266f856b112ce76.exe	39
PID 2220 wrote to memory of 2500	2220	921ba78ef5661ee885d93756f28f7e4df163f1ea910af6c68266f856b112ce76.exe	41
PID 2220 wrote to memory of 2500	2220	921ba78ef5661ee885d93756f28f7e4df163f1ea910af6c68266f856b112ce76.exe	41
PID 2220 wrote to memory of 2500	2220	921ba78ef5661ee885d93756f28f7e4df163f1ea910af6c68266f856b112ce76.exe	41
PID 2220 wrote to memory of 2892	2220	921ba78ef5661ee885d93756f28f7e4df163f1ea910af6c68266f856b112ce76.exe	43
PID 2220 wrote to memory of 2892	2220	921ba78ef5661ee885d93756f28f7e4df163f1ea910af6c68266f856b112ce76.exe	43
PID 2220 wrote to memory of 2892	2220	921ba78ef5661ee885d93756f28f7e4df163f1ea910af6c68266f856b112ce76.exe	43

C:\Users\Admin\AppData\Local\Temp\921ba78ef5661ee885d93756f28f7e4df163f1ea910af6c68266f856b112ce76.exe
"C:\Users\Admin\AppData\Local\Temp\921ba78ef5661ee885d93756f28f7e4df163f1ea910af6c68266f856b112ce76.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2220
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\921ba78ef5661ee885d93756f28f7e4df163f1ea910af6c68266f856b112ce76.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2680
- 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:2608
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2172
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2980
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:1932
- 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:2500
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:2892

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

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Web Service

T1102

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms

Filesize
7KB

MD5
0edc3220c067b6b09ef1ff84cd10eefc

SHA1
ab0a53f87cf5d9e8bfd0d922ecc7969324f2a378

SHA256
3dfe2474b10b03a6d0d830567c01b2ba5fa3fa8bd296a886c789b3c21afd2e7c

SHA512
885b30294afa3fc767d17246e7737d15126bb48cec6d5d21d5cb9200304c6fb7851de11a6731e3e4645153c1f9b9ec28391eb187ef1a5b257c7d48eb54f5e7ff

Download Submit
memory/2220-1-0x00000000002E0000-0x0000000000320000-memory.dmp

Filesize
256KB

Download
memory/2220-2-0x000007FEF6000000-0x000007FEF69EC000-memory.dmp

Filesize
9.9MB

Download
memory/2220-32-0x000007FEF6000000-0x000007FEF69EC000-memory.dmp

Filesize
9.9MB

Download
memory/2220-0-0x000007FEF6003000-0x000007FEF6004000-memory.dmp

Filesize
4KB

Download
memory/2220-24-0x000007FEF6000000-0x000007FEF69EC000-memory.dmp

Filesize
9.9MB

Download
memory/2608-22-0x0000000002040000-0x0000000002048000-memory.dmp

Filesize
32KB

Download
memory/2608-21-0x000000001B750000-0x000000001BA32000-memory.dmp

Filesize
2.9MB

Download
memory/2680-7-0x00000000029F0000-0x0000000002A70000-memory.dmp

Filesize
512KB

Download
memory/2680-13-0x000007FEEDAA0000-0x000007FEEE43D000-memory.dmp

Filesize
9.6MB

Download
memory/2680-14-0x000007FEEDAA0000-0x000007FEEE43D000-memory.dmp

Filesize
9.6MB

Download
memory/2680-15-0x000007FEEDAA0000-0x000007FEEE43D000-memory.dmp

Filesize
9.6MB

Download
memory/2680-12-0x000007FEEDAA0000-0x000007FEEE43D000-memory.dmp

Filesize
9.6MB

Download
memory/2680-11-0x000007FEEDAA0000-0x000007FEEE43D000-memory.dmp

Filesize
9.6MB

Download
memory/2680-10-0x0000000001C10000-0x0000000001C18000-memory.dmp

Filesize
32KB

Download
memory/2680-9-0x000000001B620000-0x000000001B902000-memory.dmp

Filesize
2.9MB

Download
memory/2680-8-0x000007FEEDD5E000-0x000007FEEDD5F000-memory.dmp

Filesize
4KB

Download