umbral | cad2b6b2e9fbc51734757d518386ce7940fb6d0bfa887268d313faa7e19d4ec7

Analysis

max time kernel
42s
max time network
40s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
10-08-2024 00:49

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General

Target

both executors.sfx.exe
Size

20.3MB
MD5

031e8de494548e53e70a0fb6b663eda4
SHA1

0d5c7733fefbaec2fcb7b65f827ac555aadcaebf
SHA256

cad2b6b2e9fbc51734757d518386ce7940fb6d0bfa887268d313faa7e19d4ec7
SHA512

8915d0cae49f55166546496940721293a5bbcf14bfd337022458d944d410b42b1ae4768d062c8f2eafec4380e346f59bfe8a676ab2cafcd84956e53eb2a4d064
SSDEEP

393216:9OrF7Xbsfeg2E3Zr62Q07vnUPHzWjtb2c75AOxeOlNUnBS8T/RnB:9ORI328Zr6JtTWjtb2c75AOI7n0+/RnB

Score

10^/10

umbral credential_access discovery execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 2 IoCs

resource	yara_rule
behavioral1/files/0x000700000001872a-2358.dat	family_umbral
behavioral1/memory/1644-2366-0x0000000000E30000-0x0000000000ED8000-memory.dmp	family_umbral

Umbral
Umbral stealer is an opensource moduler stealer written in C#.
stealer umbral
Credentials from Password Stores: Credentials from Web Browsers 1 TTPs
Malicious Access or copy of Web Browser Credential store.
credential_access stealer

Credentials from Web Browsers
T1555.003

Command and Scripting Interpreter: PowerShell 1 TTPs 4 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
2272	powershell.exe
2972	powershell.exe
1344	powershell.exe
2592	powershell.exe

Drops file in Drivers directory 1 IoCs

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

Executes dropped EXE 1 IoCs

pid	Process
1644	solara.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

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

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
2188	cmd.exe
2616	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
2336	wmic.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2958949473-3205530200-1453100116-1000\Software\Microsoft\Internet Explorer\Main	both executors.sfx.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2616	PING.EXE

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
1644	solara.exe
2592	powershell.exe
1344	powershell.exe
2272	powershell.exe
2004	powershell.exe
2972	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	1644	solara.exe
Token: SeIncreaseQuotaPrivilege	1980	wmic.exe
Token: SeSecurityPrivilege	1980	wmic.exe
Token: SeTakeOwnershipPrivilege	1980	wmic.exe
Token: SeLoadDriverPrivilege	1980	wmic.exe
Token: SeSystemProfilePrivilege	1980	wmic.exe
Token: SeSystemtimePrivilege	1980	wmic.exe
Token: SeProfSingleProcessPrivilege	1980	wmic.exe
Token: SeIncBasePriorityPrivilege	1980	wmic.exe
Token: SeCreatePagefilePrivilege	1980	wmic.exe
Token: SeBackupPrivilege	1980	wmic.exe
Token: SeRestorePrivilege	1980	wmic.exe
Token: SeShutdownPrivilege	1980	wmic.exe
Token: SeDebugPrivilege	1980	wmic.exe
Token: SeSystemEnvironmentPrivilege	1980	wmic.exe
Token: SeRemoteShutdownPrivilege	1980	wmic.exe
Token: SeUndockPrivilege	1980	wmic.exe
Token: SeManageVolumePrivilege	1980	wmic.exe
Token: 33	1980	wmic.exe
Token: 34	1980	wmic.exe
Token: 35	1980	wmic.exe
Token: SeIncreaseQuotaPrivilege	1980	wmic.exe
Token: SeSecurityPrivilege	1980	wmic.exe
Token: SeTakeOwnershipPrivilege	1980	wmic.exe
Token: SeLoadDriverPrivilege	1980	wmic.exe
Token: SeSystemProfilePrivilege	1980	wmic.exe
Token: SeSystemtimePrivilege	1980	wmic.exe
Token: SeProfSingleProcessPrivilege	1980	wmic.exe
Token: SeIncBasePriorityPrivilege	1980	wmic.exe
Token: SeCreatePagefilePrivilege	1980	wmic.exe
Token: SeBackupPrivilege	1980	wmic.exe
Token: SeRestorePrivilege	1980	wmic.exe
Token: SeShutdownPrivilege	1980	wmic.exe
Token: SeDebugPrivilege	1980	wmic.exe
Token: SeSystemEnvironmentPrivilege	1980	wmic.exe
Token: SeRemoteShutdownPrivilege	1980	wmic.exe
Token: SeUndockPrivilege	1980	wmic.exe
Token: SeManageVolumePrivilege	1980	wmic.exe
Token: 33	1980	wmic.exe
Token: 34	1980	wmic.exe
Token: 35	1980	wmic.exe
Token: SeDebugPrivilege	2592	powershell.exe
Token: SeDebugPrivilege	1344	powershell.exe
Token: SeDebugPrivilege	2272	powershell.exe
Token: SeDebugPrivilege	2004	powershell.exe
Token: SeIncreaseQuotaPrivilege	2024	wmic.exe
Token: SeSecurityPrivilege	2024	wmic.exe
Token: SeTakeOwnershipPrivilege	2024	wmic.exe
Token: SeLoadDriverPrivilege	2024	wmic.exe
Token: SeSystemProfilePrivilege	2024	wmic.exe
Token: SeSystemtimePrivilege	2024	wmic.exe
Token: SeProfSingleProcessPrivilege	2024	wmic.exe
Token: SeIncBasePriorityPrivilege	2024	wmic.exe
Token: SeCreatePagefilePrivilege	2024	wmic.exe
Token: SeBackupPrivilege	2024	wmic.exe
Token: SeRestorePrivilege	2024	wmic.exe
Token: SeShutdownPrivilege	2024	wmic.exe
Token: SeDebugPrivilege	2024	wmic.exe
Token: SeSystemEnvironmentPrivilege	2024	wmic.exe
Token: SeRemoteShutdownPrivilege	2024	wmic.exe
Token: SeUndockPrivilege	2024	wmic.exe
Token: SeManageVolumePrivilege	2024	wmic.exe
Token: 33	2024	wmic.exe
Token: 34	2024	wmic.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
3032	both executors.sfx.exe
3032	both executors.sfx.exe

Suspicious use of WriteProcessMemory 42 IoCs

description	pid	Process	procid_target
PID 3032 wrote to memory of 1644	3032	both executors.sfx.exe	31
PID 3032 wrote to memory of 1644	3032	both executors.sfx.exe	31
PID 3032 wrote to memory of 1644	3032	both executors.sfx.exe	31
PID 1644 wrote to memory of 1980	1644	solara.exe	32
PID 1644 wrote to memory of 1980	1644	solara.exe	32
PID 1644 wrote to memory of 1980	1644	solara.exe	32
PID 1644 wrote to memory of 404	1644	solara.exe	35
PID 1644 wrote to memory of 404	1644	solara.exe	35
PID 1644 wrote to memory of 404	1644	solara.exe	35
PID 1644 wrote to memory of 2592	1644	solara.exe	37
PID 1644 wrote to memory of 2592	1644	solara.exe	37
PID 1644 wrote to memory of 2592	1644	solara.exe	37
PID 1644 wrote to memory of 1344	1644	solara.exe	39
PID 1644 wrote to memory of 1344	1644	solara.exe	39
PID 1644 wrote to memory of 1344	1644	solara.exe	39
PID 1644 wrote to memory of 2272	1644	solara.exe	41
PID 1644 wrote to memory of 2272	1644	solara.exe	41
PID 1644 wrote to memory of 2272	1644	solara.exe	41
PID 1644 wrote to memory of 2004	1644	solara.exe	43
PID 1644 wrote to memory of 2004	1644	solara.exe	43
PID 1644 wrote to memory of 2004	1644	solara.exe	43
PID 1644 wrote to memory of 2024	1644	solara.exe	45
PID 1644 wrote to memory of 2024	1644	solara.exe	45
PID 1644 wrote to memory of 2024	1644	solara.exe	45
PID 1644 wrote to memory of 1228	1644	solara.exe	47
PID 1644 wrote to memory of 1228	1644	solara.exe	47
PID 1644 wrote to memory of 1228	1644	solara.exe	47
PID 1644 wrote to memory of 1556	1644	solara.exe	49
PID 1644 wrote to memory of 1556	1644	solara.exe	49
PID 1644 wrote to memory of 1556	1644	solara.exe	49
PID 1644 wrote to memory of 2972	1644	solara.exe	51
PID 1644 wrote to memory of 2972	1644	solara.exe	51
PID 1644 wrote to memory of 2972	1644	solara.exe	51
PID 1644 wrote to memory of 2336	1644	solara.exe	53
PID 1644 wrote to memory of 2336	1644	solara.exe	53
PID 1644 wrote to memory of 2336	1644	solara.exe	53
PID 1644 wrote to memory of 2188	1644	solara.exe	55
PID 1644 wrote to memory of 2188	1644	solara.exe	55
PID 1644 wrote to memory of 2188	1644	solara.exe	55
PID 2188 wrote to memory of 2616	2188	cmd.exe	57
PID 2188 wrote to memory of 2616	2188	cmd.exe	57
PID 2188 wrote to memory of 2616	2188	cmd.exe	57

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
404	attrib.exe

C:\Users\Admin\AppData\Local\Temp\both executors.sfx.exe
"C:\Users\Admin\AppData\Local\Temp\both executors.sfx.exe"
1⤵
- Modifies Internet Explorer settings
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3032
- C:\Users\Admin\AppData\Local\Temp\solara.exe
  "C:\Users\Admin\AppData\Local\Temp\solara.exe"
  2⤵
  - Drops file in Drivers directory
  - Executes dropped EXE
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1644
- - C:\Windows\System32\Wbem\wmic.exe
    "wmic.exe" csproduct get uuid
    3⤵
    - Suspicious use of AdjustPrivilegeToken
    PID:1980
- - C:\Windows\system32\attrib.exe
    "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\solara.exe"
    3⤵
    - Views/modifies file attributes
    PID:404
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\solara.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2592
- - 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
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1344
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "powershell.exe" Get-ItemPropertyValue -Path HKCU:SOFTWARE\Roblox\RobloxStudioBrowser\roblox.com -Name .ROBLOSECURITY
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2272
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "powershell.exe" Get-ItemPropertyValue -Path HKLN:SOFTWARE\Roblox\RobloxStudioBrowser\roblox.com -Name .ROBLOSECURITY
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2004
- - C:\Windows\System32\Wbem\wmic.exe
    "wmic.exe" os get Caption
    3⤵
    - Suspicious use of AdjustPrivilegeToken
    PID:2024
- - C:\Windows\System32\Wbem\wmic.exe
    "wmic.exe" computersystem get totalphysicalmemory
    3⤵
    PID:1228
- - C:\Windows\System32\Wbem\wmic.exe
    "wmic.exe" csproduct get uuid
    3⤵
    PID:1556
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "powershell.exe" Get-ItemPropertyValue -Path 'HKLM:System\CurrentControlSet\Control\Session Manager\Environment' -Name PROCESSOR_IDENTIFIER
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    PID:2972
- - C:\Windows\System32\Wbem\wmic.exe
    "wmic" path win32_VideoController get name
    3⤵
    - Detects videocard installed
    PID:2336
- - C:\Windows\system32\cmd.exe
    "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\solara.exe" && pause
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Suspicious use of WriteProcessMemory
    PID:2188
  - - C:\Windows\system32\PING.EXE
      ping localhost
      4⤵
      System Network Configuration Discovery: Internet Connection Discovery
      Runs ping.exe
      PID:2616

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

Modify Registry

T1112

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\Temp\bin\Monaco\package\esm\vs\base\browser\ui\iconLabel\iconHoverDelegate.js

Filesize
368B

MD5
dff5cd240217dc0e722c27be242db91d

SHA1
244d1e7b3a10bb26e52ad9019e0e20f8bb3a72aa

SHA256
151caa77914089aa02273bb851f4b9a198eaab38da7eb9e4bdd7af8075c2dc57

SHA512
e6033e28f65f29ec3a7fc2e367bb6dd2909e38e5e5ccd267fe920e82c25de00c3cf5593db022dc1664ec00652882d5093121f2686788ee3eb60d0b2d87fef6d5

Download Submit
C:\Users\Admin\AppData\Local\Temp\bin\Monaco\package\esm\vs\language\json\_deps\vscode-languageserver-textdocument\lib\esm\main.js

Filesize
10KB

MD5
722df93c13e5a9e4b3a42c515d6281e3

SHA1
e046b8875a0373f38e8135f6500bc9deb9b1cc34

SHA256
bb9e7de4f27538b132cd593302a62f8a42f433e1b0e04a1edb4472a97d6ddf46

SHA512
6e1db81e7286e7762cce5c281c1ddab227ab374c5c33ff45a5031275592a84fd47547b6ad496f302bbca0bbdc01ed899ff8ed87f22bb8b88973a257e345b70ac

Download Submit
C:\Users\Admin\AppData\Local\Temp\bin\Monaco\package\esm\vs\language\json\_deps\vscode-languageserver-types\main.js

Filesize
66KB

MD5
f80215fcc9a89ba7be3bc0b32cacb094

SHA1
8449846cc76fc770a31e310882454f5d6beae342

SHA256
1adcb7cc0756472bc16ace850f3f5b6d5746ea4af2d75ad0785b967dd07bf9f1

SHA512
7187397ff691dfe558c00a8393d4d3d86b7ab8fdbed8b40ecd43c8ba3af40f8ceab0f78d001cc892ea0d5b5a36be4a559715a4385b39a6db1ce473b2883513b0

Download Submit
C:\Users\Admin\AppData\Local\Temp\bin\Monaco\package\esm\vs\language\json\_deps\vscode-uri\index.js

Filesize
11KB

MD5
db7069b3b398babf3a2a97e7f7c3aa65

SHA1
2208bc3bb4548247d672cbd3368dbb992ce6d312

SHA256
15fce1bc78e59f11f36c62e31b6db98d10cf5810fcb8fceeecf9cbdd2ac9742d

SHA512
326716687bed34d862a71df1c7259988de21ef78af8829d2253f099988818200477df7e13f97fa78671d426a856feaa651d1c8350f7edac5d59ec9bc13f354d3

Download Submit
C:\Users\Admin\AppData\Local\Temp\bin\Monaco\package\esm\vs\language\json\fillers\monaco-editor-core.d.ts

Filesize
37B

MD5
604924c7fd140e65f677cff5c06ea77e

SHA1
60adb20bf4cac895df6b31a4da98a4d2267ca3e6

SHA256
87b3728d7af0f6c25f9cdbedfbc093f5e46a24371910199a638a1a13e3444668

SHA512
34affd619893b93ebfeb0d19daf6c4768b0e3de7d4d8272058cd41608ef9a1f5ceb5951b0b8a7732dd4e3e020d51bda9c9509eed4a3a5705d3a1ad396d610af1

Download Submit
C:\Users\Admin\AppData\Local\Temp\bin\Monaco\package\esm\vs\language\json\fillers\monaco-editor-core.js

Filesize
404B

MD5
40fc593844c4ee88ff8e87481824dda0

SHA1
c2d8bed92d90e685576812d7c62ac2db28af2185

SHA256
a27649c652a7abcefe0b54567eb64f1cdf9be521bab22cfb71718e816b160375

SHA512
0457cf90d188e803401555e57a24647e592830ddad9e9e73d64a89889ec6b40eb15d2330ba507c6bad2faceb6c14bb643b4557db1e68896354aa6a19a99ae357

Download Submit
C:\Users\Admin\AppData\Local\Temp\bin\Monaco\package\esm\vs\language\json\fillers\vscode-nls.js

Filesize
1KB

MD5
1e2ca4b54776b992ed920a66940bca7a

SHA1
86ed5c8360d31c4763c05184fa4e7cc46cfa9354

SHA256
539191b86cffb8607fc04d0369756281f63bcb884cbe6ea729a668edf4018059

SHA512
fb249812b6587078d8a715d4c684af62db0ed05f6d80afb3374fe1f1e0a0a11b2c2551fcb738f3383b88152f95ca889c7c81543da7575d8d8b161d5c9ffea07b

Download Submit
C:\Users\Admin\AppData\Local\Temp\bin\Monaco\package\esm\vs\platform\telemetry\common\gdprTypings.js

Filesize
12B

MD5
5c7f99e3d4eaae821996a487acc6a5e2

SHA1
9ff99e6a0a31241fe503c3c76a340bedfe2902b7

SHA256
f761c91419d0a89422a0004ef1a92929dd4d2d5e5c16758654d8b0467d1998c6

SHA512
9247b46a096ad45b486e4b83bb880a7d4e0da7731e3e64b8ba41513a0632932d3bfcf132b2d20e81e363c2595aa9a38d486111dc6365c0f014c1af25ec0be839

Download Submit
C:\Users\Admin\AppData\Local\Temp\bin\Monaco\package\min\vs\base\browser\ui\codicons\codicon\codicon.ttf

Filesize
63KB

MD5
b13daaad214ef227a36fefd95d924380

SHA1
95791fc8733a4bae907859b1a46bd1115f90c983

SHA256
774c4acc42f27289850537e2b6e9b85f67fde54145f6f41876dc4f65b45a4a20

SHA512
ad05613494a490e01504a30e34d7fb5bc2e535d70b5e5d5154a81ad1acaa51c0e368a6fae6aaa0a42faaae63f7e751a98748a7c291056100b7ad687ff6ae687d

Download Submit
C:\Users\Admin\AppData\Local\Temp\solara.exe

Filesize
652KB

MD5
dc1757e9337c0d6e64c896ee8a992bf6

SHA1
ec4684cd93c4826c7ed2b3542fe51855ab165efd

SHA256
e13fd15bccd8240360d0374a0d4dbbb80e4b92385ff6a2d5c2753fae8c55fe67

SHA512
428550a33954e81b15a6cb25eb7fe0c58ee71c755914a2bdeb4e48d39b4f4a5fd5dbbeea19b992407167d404e49deffee5ce5a3f65557508d5c198a6b7ae00b7

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

Filesize
7KB

MD5
68207b43be019d077085c11982cbcc8a

SHA1
04b804ccb78dd7415bc282744b553e9c9a60de8b

SHA256
4933a0584df49106d241027e8f44f6558a890284b0ac321b45b0e0e483b3cf78

SHA512
7ff98c65e64050bc0783264249b7825f87fd7b9e0b421173614f444f5b35cf33089e3b1f1b3cdfba2d12b090e467981196173e9ab20c38cb89fdb6870b145793

Download Submit
memory/1344-2378-0x000000001B6F0000-0x000000001B9D2000-memory.dmp

Filesize
2.9MB

Download
memory/1344-2379-0x0000000001E00000-0x0000000001E08000-memory.dmp

Filesize
32KB

Download
memory/1644-2365-0x000007FEF42B3000-0x000007FEF42B4000-memory.dmp

Filesize
4KB

Download
memory/1644-2366-0x0000000000E30000-0x0000000000ED8000-memory.dmp

Filesize
672KB

Download
memory/2592-2371-0x000000001B740000-0x000000001BA22000-memory.dmp

Filesize
2.9MB

Download
memory/2592-2372-0x0000000001E10000-0x0000000001E18000-memory.dmp

Filesize
32KB

Download
memory/2972-2406-0x0000000002810000-0x0000000002818000-memory.dmp

Filesize
32KB

Download