umbral | 4c8616f89a7f53938f21cd3e1d737c0980b5ab0faab3e8e2c401e4b5ed28106b

Analysis

max time kernel
150s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
25-12-2023 01:29

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General

Target

ea6f9411b4568ed828772ce578f40ff5b38715d067bdd76616d945f14462351a.exe
Size

1.7MB
MD5

683c060ccca9ee3a5dad65946c8c9a88
SHA1

35a18395cd290cf377fe665aebdfb26e59869a5c
SHA256

ea6f9411b4568ed828772ce578f40ff5b38715d067bdd76616d945f14462351a
SHA512

63ab8296b245430a3b13d7eea08d89845a32a8c14b7b88bc516a3b45192a2aa10abdd5e0d9483bc72c5f9b57b228ac498dd7166a54dcafefa630b364377063ef
SSDEEP

24576:XHfPkK8FXhOdkO/MHqP0OF8u/N6HH6rrcBpbYTa+cy:PPj8FXodouFDr3Txc

Score

10^/10

umbral spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral2/memory/4472-14-0x0000000000400000-0x0000000000440000-memory.dmp	family_umbral

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

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-1-5-21-996941297-2279405024-2328152752-1000\Control Panel\International\Geo\Nation	ea6f9411b4568ed828772ce578f40ff5b38715d067bdd76616d945f14462351a.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

Web Service
T1102

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
139	ip-api.com

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 400 set thread context of 4472	400	ea6f9411b4568ed828772ce578f40ff5b38715d067bdd76616d945f14462351a.exe	90

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
1968	wmic.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
3876	powershell.exe
3876	powershell.exe
3876	powershell.exe
1896	powershell.exe
1896	powershell.exe
1896	powershell.exe
3244	powershell.exe
3244	powershell.exe
3244	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	400	ea6f9411b4568ed828772ce578f40ff5b38715d067bdd76616d945f14462351a.exe
Token: SeDebugPrivilege	4472	RegAsm.exe
Token: SeDebugPrivilege	3876	powershell.exe
Token: SeDebugPrivilege	1896	powershell.exe
Token: SeIncreaseQuotaPrivilege	4880	wmic.exe
Token: SeSecurityPrivilege	4880	wmic.exe
Token: SeTakeOwnershipPrivilege	4880	wmic.exe
Token: SeLoadDriverPrivilege	4880	wmic.exe
Token: SeSystemProfilePrivilege	4880	wmic.exe
Token: SeSystemtimePrivilege	4880	wmic.exe
Token: SeProfSingleProcessPrivilege	4880	wmic.exe
Token: SeIncBasePriorityPrivilege	4880	wmic.exe
Token: SeCreatePagefilePrivilege	4880	wmic.exe
Token: SeBackupPrivilege	4880	wmic.exe
Token: SeRestorePrivilege	4880	wmic.exe
Token: SeShutdownPrivilege	4880	wmic.exe
Token: SeDebugPrivilege	4880	wmic.exe
Token: SeSystemEnvironmentPrivilege	4880	wmic.exe
Token: SeRemoteShutdownPrivilege	4880	wmic.exe
Token: SeUndockPrivilege	4880	wmic.exe
Token: SeManageVolumePrivilege	4880	wmic.exe
Token: 33	4880	wmic.exe
Token: 34	4880	wmic.exe
Token: 35	4880	wmic.exe
Token: 36	4880	wmic.exe
Token: SeIncreaseQuotaPrivilege	4880	wmic.exe
Token: SeSecurityPrivilege	4880	wmic.exe
Token: SeTakeOwnershipPrivilege	4880	wmic.exe
Token: SeLoadDriverPrivilege	4880	wmic.exe
Token: SeSystemProfilePrivilege	4880	wmic.exe
Token: SeSystemtimePrivilege	4880	wmic.exe
Token: SeProfSingleProcessPrivilege	4880	wmic.exe
Token: SeIncBasePriorityPrivilege	4880	wmic.exe
Token: SeCreatePagefilePrivilege	4880	wmic.exe
Token: SeBackupPrivilege	4880	wmic.exe
Token: SeRestorePrivilege	4880	wmic.exe
Token: SeShutdownPrivilege	4880	wmic.exe
Token: SeDebugPrivilege	4880	wmic.exe
Token: SeSystemEnvironmentPrivilege	4880	wmic.exe
Token: SeRemoteShutdownPrivilege	4880	wmic.exe
Token: SeUndockPrivilege	4880	wmic.exe
Token: SeManageVolumePrivilege	4880	wmic.exe
Token: 33	4880	wmic.exe
Token: 34	4880	wmic.exe
Token: 35	4880	wmic.exe
Token: 36	4880	wmic.exe
Token: SeIncreaseQuotaPrivilege	4552	wmic.exe
Token: SeSecurityPrivilege	4552	wmic.exe
Token: SeTakeOwnershipPrivilege	4552	wmic.exe
Token: SeLoadDriverPrivilege	4552	wmic.exe
Token: SeSystemProfilePrivilege	4552	wmic.exe
Token: SeSystemtimePrivilege	4552	wmic.exe
Token: SeProfSingleProcessPrivilege	4552	wmic.exe
Token: SeIncBasePriorityPrivilege	4552	wmic.exe
Token: SeCreatePagefilePrivilege	4552	wmic.exe
Token: SeBackupPrivilege	4552	wmic.exe
Token: SeRestorePrivilege	4552	wmic.exe
Token: SeShutdownPrivilege	4552	wmic.exe
Token: SeDebugPrivilege	4552	wmic.exe
Token: SeSystemEnvironmentPrivilege	4552	wmic.exe
Token: SeRemoteShutdownPrivilege	4552	wmic.exe
Token: SeUndockPrivilege	4552	wmic.exe
Token: SeManageVolumePrivilege	4552	wmic.exe
Token: 33	4552	wmic.exe

Suspicious use of WriteProcessMemory 29 IoCs

description	pid	Process	procid_target
PID 400 wrote to memory of 4472	400	ea6f9411b4568ed828772ce578f40ff5b38715d067bdd76616d945f14462351a.exe	90
PID 400 wrote to memory of 4472	400	ea6f9411b4568ed828772ce578f40ff5b38715d067bdd76616d945f14462351a.exe	90
PID 400 wrote to memory of 4472	400	ea6f9411b4568ed828772ce578f40ff5b38715d067bdd76616d945f14462351a.exe	90
PID 400 wrote to memory of 4472	400	ea6f9411b4568ed828772ce578f40ff5b38715d067bdd76616d945f14462351a.exe	90
PID 400 wrote to memory of 4472	400	ea6f9411b4568ed828772ce578f40ff5b38715d067bdd76616d945f14462351a.exe	90
PID 400 wrote to memory of 4472	400	ea6f9411b4568ed828772ce578f40ff5b38715d067bdd76616d945f14462351a.exe	90
PID 400 wrote to memory of 4472	400	ea6f9411b4568ed828772ce578f40ff5b38715d067bdd76616d945f14462351a.exe	90
PID 400 wrote to memory of 4472	400	ea6f9411b4568ed828772ce578f40ff5b38715d067bdd76616d945f14462351a.exe	90
PID 4472 wrote to memory of 3876	4472	RegAsm.exe	104
PID 4472 wrote to memory of 3876	4472	RegAsm.exe	104
PID 4472 wrote to memory of 3876	4472	RegAsm.exe	104
PID 4472 wrote to memory of 1896	4472	RegAsm.exe	106
PID 4472 wrote to memory of 1896	4472	RegAsm.exe	106
PID 4472 wrote to memory of 1896	4472	RegAsm.exe	106
PID 4472 wrote to memory of 4880	4472	RegAsm.exe	108
PID 4472 wrote to memory of 4880	4472	RegAsm.exe	108
PID 4472 wrote to memory of 4880	4472	RegAsm.exe	108
PID 4472 wrote to memory of 4552	4472	RegAsm.exe	111
PID 4472 wrote to memory of 4552	4472	RegAsm.exe	111
PID 4472 wrote to memory of 4552	4472	RegAsm.exe	111
PID 4472 wrote to memory of 4156	4472	RegAsm.exe	112
PID 4472 wrote to memory of 4156	4472	RegAsm.exe	112
PID 4472 wrote to memory of 4156	4472	RegAsm.exe	112
PID 4472 wrote to memory of 3244	4472	RegAsm.exe	114
PID 4472 wrote to memory of 3244	4472	RegAsm.exe	114
PID 4472 wrote to memory of 3244	4472	RegAsm.exe	114
PID 4472 wrote to memory of 1968	4472	RegAsm.exe	116
PID 4472 wrote to memory of 1968	4472	RegAsm.exe	116
PID 4472 wrote to memory of 1968	4472	RegAsm.exe	116

C:\Users\Admin\AppData\Local\Temp\ea6f9411b4568ed828772ce578f40ff5b38715d067bdd76616d945f14462351a.exe
"C:\Users\Admin\AppData\Local\Temp\ea6f9411b4568ed828772ce578f40ff5b38715d067bdd76616d945f14462351a.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:400
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
  "C:\\Windows\\Microsoft.NET\\Framework\\v4.0.30319\\RegAsm.exe"
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4472
- - C:\Windows\SysWOW64\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:3876
- - C:\Windows\SysWOW64\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:1896
- - C:\Windows\SysWOW64\Wbem\wmic.exe
    "wmic.exe" os get Caption
    3⤵
    - Suspicious use of AdjustPrivilegeToken
    PID:4880
- - C:\Windows\SysWOW64\Wbem\wmic.exe
    "wmic.exe" computersystem get totalphysicalmemory
    3⤵
    - Suspicious use of AdjustPrivilegeToken
    PID:4552
- - C:\Windows\SysWOW64\Wbem\wmic.exe
    "wmic.exe" csproduct get uuid
    3⤵
    PID:4156
- - C:\Windows\SysWOW64\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:3244
- - C:\Windows\SysWOW64\Wbem\wmic.exe
    "wmic" path win32_VideoController get name
    3⤵
    - Detects videocard installed
    PID:1968

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Web Service

T1102

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log

Filesize
1KB

MD5
5315900105942deb090a358a315b06fe

SHA1
22fe5d2e1617c31afbafb91c117508d41ef0ce44

SHA256
e8bd7d8d1d0437c71aceb032f9fb08dd1147f41c048540254971cc60e95d6cd7

SHA512
77e8d15b8c34a1cb01dbee7147987e2cc25c747e0f80d254714a93937a6d2fe08cb5a772cf85ceb8fec56415bfa853234a003173718c4229ba8cfcf2ce6335a6

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

Filesize
17KB

MD5
3c9441307822f2b5bb6e24acf726c5b9

SHA1
c5a7747e95d7a88622f765ac198ab581c3c9568e

SHA256
c316552a7eb1229dc2ee50fcc4c8d9e9761be361cb7ad86ab8aef4a8a992bbfa

SHA512
1a543abf52710efd340e139a70e15337fd3317f677819182901afb28d2e6d425f8d271cbbc9c6b0364a1844d5a7c085a3183c0e3f167cceaf687689ce5cff365

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

Filesize
18KB

MD5
45548ece82503a650c912ebe7b349eaa

SHA1
facecb27778347b9e461c9a888d9438060c4ecac

SHA256
1d5b9e1d9d162b1577f16608bf90daaf0eb0ac352baa2799a2ae16db86957be4

SHA512
d9d718dac7c913a6bed8007b8aaa492c186e0677a7aba3624aa1870ab36c0fd19196d679727a1701bcbcf4c0b1a122988d230ba5d9e92d023fe6cdf8c4076d20

Download Submit
C:\Users\Admin\AppData\Local\Temp\PerfWatson2.exe

Filesize
4KB

MD5
4398478b509166e712c157aaa263c5f3

SHA1
bb71c9af40f200967a2cd97c3262ed447704ec2c

SHA256
390034a7eb1f5697715f37a35c427394a9b8dd880183fdd4aea8a540b5b2967a

SHA512
7b33c59e61efabd9690d7689c8f52e79d27d11de680e3d8615aa9878141e0a75f166a880aded01c50450b6538d518df22049e981712db01b131a434319c54246

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_kzqt0vad.k4x.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/400-1-0x0000000000C80000-0x0000000000E40000-memory.dmp

Filesize
1.8MB

Download
memory/400-2-0x00000000057C0000-0x00000000057D0000-memory.dmp

Filesize
64KB

Download
memory/400-12-0x00000000062D0000-0x00000000062E0000-memory.dmp

Filesize
64KB

Download
memory/400-13-0x0000000006370000-0x0000000006378000-memory.dmp

Filesize
32KB

Download
memory/400-0-0x0000000074430000-0x0000000074BE0000-memory.dmp

Filesize
7.7MB

Download
memory/400-16-0x0000000074430000-0x0000000074BE0000-memory.dmp

Filesize
7.7MB

Download
memory/1896-80-0x0000000002730000-0x0000000002740000-memory.dmp

Filesize
64KB

Download
memory/1896-82-0x0000000074420000-0x0000000074BD0000-memory.dmp

Filesize
7.7MB

Download
memory/1896-69-0x00000000059F0000-0x0000000005D44000-memory.dmp

Filesize
3.3MB

Download
memory/1896-66-0x0000000074420000-0x0000000074BD0000-memory.dmp

Filesize
7.7MB

Download
memory/1896-67-0x0000000002730000-0x0000000002740000-memory.dmp

Filesize
64KB

Download
memory/1896-68-0x0000000002730000-0x0000000002740000-memory.dmp

Filesize
64KB

Download
memory/3244-89-0x0000000004820000-0x0000000004830000-memory.dmp

Filesize
64KB

Download
memory/3244-90-0x0000000004820000-0x0000000004830000-memory.dmp

Filesize
64KB

Download
memory/3244-88-0x0000000074420000-0x0000000074BD0000-memory.dmp

Filesize
7.7MB

Download
memory/3244-91-0x00000000055B0000-0x0000000005904000-memory.dmp

Filesize
3.3MB

Download
memory/3244-102-0x00000000061F0000-0x000000000623C000-memory.dmp

Filesize
304KB

Download
memory/3244-104-0x0000000074420000-0x0000000074BD0000-memory.dmp

Filesize
7.7MB

Download
memory/3876-55-0x0000000006200000-0x000000000621E000-memory.dmp

Filesize
120KB

Download
memory/3876-26-0x0000000074420000-0x0000000074BD0000-memory.dmp

Filesize
7.7MB

Download
memory/3876-54-0x0000000005DB0000-0x0000000006104000-memory.dmp

Filesize
3.3MB

Download
memory/3876-48-0x0000000005A90000-0x0000000005AF6000-memory.dmp

Filesize
408KB

Download
memory/3876-56-0x00000000062B0000-0x00000000062FC000-memory.dmp

Filesize
304KB

Download
memory/3876-57-0x0000000004DB0000-0x0000000004DC0000-memory.dmp

Filesize
64KB

Download
memory/3876-58-0x00000000073D0000-0x0000000007466000-memory.dmp

Filesize
600KB

Download
memory/3876-60-0x0000000006770000-0x0000000006792000-memory.dmp

Filesize
136KB

Download
memory/3876-59-0x00000000066F0000-0x000000000670A000-memory.dmp

Filesize
104KB

Download
memory/3876-61-0x0000000007A20000-0x0000000007FC4000-memory.dmp

Filesize
5.6MB

Download
memory/3876-42-0x00000000053B0000-0x00000000053D2000-memory.dmp

Filesize
136KB

Download
memory/3876-64-0x0000000074420000-0x0000000074BD0000-memory.dmp

Filesize
7.7MB

Download
memory/3876-33-0x0000000004DB0000-0x0000000004DC0000-memory.dmp

Filesize
64KB

Download
memory/3876-28-0x0000000004DB0000-0x0000000004DC0000-memory.dmp

Filesize
64KB

Download
memory/3876-27-0x00000000053F0000-0x0000000005A18000-memory.dmp

Filesize
6.2MB

Download
memory/3876-49-0x0000000005B70000-0x0000000005BD6000-memory.dmp

Filesize
408KB

Download
memory/3876-25-0x0000000004BC0000-0x0000000004BF6000-memory.dmp

Filesize
216KB

Download
memory/4472-24-0x00000000060A0000-0x00000000060BE000-memory.dmp

Filesize
120KB

Download
memory/4472-23-0x0000000005E20000-0x0000000005E70000-memory.dmp

Filesize
320KB

Download
memory/4472-84-0x0000000006520000-0x000000000652A000-memory.dmp

Filesize
40KB

Download
memory/4472-85-0x00000000065B0000-0x00000000065C2000-memory.dmp

Filesize
72KB

Download
memory/4472-22-0x0000000005DA0000-0x0000000005E16000-memory.dmp

Filesize
472KB

Download
memory/4472-21-0x00000000050E0000-0x00000000050F0000-memory.dmp

Filesize
64KB

Download
memory/4472-20-0x0000000074420000-0x0000000074BD0000-memory.dmp

Filesize
7.7MB

Download
memory/4472-19-0x00000000050E0000-0x00000000050F0000-memory.dmp

Filesize
64KB

Download
memory/4472-18-0x0000000074420000-0x0000000074BD0000-memory.dmp

Filesize
7.7MB

Download
memory/4472-17-0x0000000004E70000-0x0000000004F02000-memory.dmp

Filesize
584KB

Download
memory/4472-14-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/4472-109-0x0000000074420000-0x0000000074BD0000-memory.dmp

Filesize
7.7MB

Download