umbral | 0bb64c9c095b99117d8250f97cda9a257985ce3ba6b5891796c7ece426b61ed0

Analysis

max time kernel
137s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
21/08/2024, 01:05

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General

Target
0bb64c9c095b99117d8250f97cda9a257985ce3ba6b5891796c7ece426b61ed0.exe
Size 227KB
Sample240821-bfx4zaself
SHA256 0bb64c9c095b99117d8250f97cda9a257985ce3ba6b5891796c7ece426b61ed0
MD5 fe415b65db443f8d7e3aa075d79b4a72
SHA1 71fa4604b053ac55c7afa5a2d87ea0bcf8d0a116
SHA512 dc715d2c938f22446f155afa615adbee775eb7abdc688b204037eccadd435490be3ab0fe6b2a9d493cb357de5730e864ffb842c42dc3051671a7fbc9a9117fb8
SSDEEP 6144:+loZM9rIkd8g+EtXHkv/iD4W9YhFzQEbmCzFQMpi+b8e1mSPi:ooZOL+EP8W9YhFzQEbmCzFQMp9Pa
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

umbral credential_access discovery execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral2/memory/3512-1-0x000001FD4E440000-0x000001FD4E480000-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

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
408	powershell.exe
2160	powershell.exe
1744	powershell.exe
3916	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	0bb64c9c095b99117d8250f97cda9a257985ce3ba6b5891796c7ece426b61ed0.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
25	discord.com
26	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
17	ip-api.com

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
1872	cmd.exe
1684	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
3272	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
1684	PING.EXE

Suspicious behavior: EnumeratesProcesses 10 IoCs

pid	Process
408	powershell.exe
408	powershell.exe
1744	powershell.exe
1744	powershell.exe
3916	powershell.exe
3916	powershell.exe
5000	powershell.exe
5000	powershell.exe
2160	powershell.exe
2160	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	3512	0bb64c9c095b99117d8250f97cda9a257985ce3ba6b5891796c7ece426b61ed0.exe
Token: SeDebugPrivilege	408	powershell.exe
Token: SeDebugPrivilege	1744	powershell.exe
Token: SeDebugPrivilege	3916	powershell.exe
Token: SeDebugPrivilege	5000	powershell.exe
Token: SeIncreaseQuotaPrivilege	1572	wmic.exe
Token: SeSecurityPrivilege	1572	wmic.exe
Token: SeTakeOwnershipPrivilege	1572	wmic.exe
Token: SeLoadDriverPrivilege	1572	wmic.exe
Token: SeSystemProfilePrivilege	1572	wmic.exe
Token: SeSystemtimePrivilege	1572	wmic.exe
Token: SeProfSingleProcessPrivilege	1572	wmic.exe
Token: SeIncBasePriorityPrivilege	1572	wmic.exe
Token: SeCreatePagefilePrivilege	1572	wmic.exe
Token: SeBackupPrivilege	1572	wmic.exe
Token: SeRestorePrivilege	1572	wmic.exe
Token: SeShutdownPrivilege	1572	wmic.exe
Token: SeDebugPrivilege	1572	wmic.exe
Token: SeSystemEnvironmentPrivilege	1572	wmic.exe
Token: SeRemoteShutdownPrivilege	1572	wmic.exe
Token: SeUndockPrivilege	1572	wmic.exe
Token: SeManageVolumePrivilege	1572	wmic.exe
Token: 33	1572	wmic.exe
Token: 34	1572	wmic.exe
Token: 35	1572	wmic.exe
Token: 36	1572	wmic.exe
Token: SeIncreaseQuotaPrivilege	1572	wmic.exe
Token: SeSecurityPrivilege	1572	wmic.exe
Token: SeTakeOwnershipPrivilege	1572	wmic.exe
Token: SeLoadDriverPrivilege	1572	wmic.exe
Token: SeSystemProfilePrivilege	1572	wmic.exe
Token: SeSystemtimePrivilege	1572	wmic.exe
Token: SeProfSingleProcessPrivilege	1572	wmic.exe
Token: SeIncBasePriorityPrivilege	1572	wmic.exe
Token: SeCreatePagefilePrivilege	1572	wmic.exe
Token: SeBackupPrivilege	1572	wmic.exe
Token: SeRestorePrivilege	1572	wmic.exe
Token: SeShutdownPrivilege	1572	wmic.exe
Token: SeDebugPrivilege	1572	wmic.exe
Token: SeSystemEnvironmentPrivilege	1572	wmic.exe
Token: SeRemoteShutdownPrivilege	1572	wmic.exe
Token: SeUndockPrivilege	1572	wmic.exe
Token: SeManageVolumePrivilege	1572	wmic.exe
Token: 33	1572	wmic.exe
Token: 34	1572	wmic.exe
Token: 35	1572	wmic.exe
Token: 36	1572	wmic.exe
Token: SeIncreaseQuotaPrivilege	3208	wmic.exe
Token: SeSecurityPrivilege	3208	wmic.exe
Token: SeTakeOwnershipPrivilege	3208	wmic.exe
Token: SeLoadDriverPrivilege	3208	wmic.exe
Token: SeSystemProfilePrivilege	3208	wmic.exe
Token: SeSystemtimePrivilege	3208	wmic.exe
Token: SeProfSingleProcessPrivilege	3208	wmic.exe
Token: SeIncBasePriorityPrivilege	3208	wmic.exe
Token: SeCreatePagefilePrivilege	3208	wmic.exe
Token: SeBackupPrivilege	3208	wmic.exe
Token: SeRestorePrivilege	3208	wmic.exe
Token: SeShutdownPrivilege	3208	wmic.exe
Token: SeDebugPrivilege	3208	wmic.exe
Token: SeSystemEnvironmentPrivilege	3208	wmic.exe
Token: SeRemoteShutdownPrivilege	3208	wmic.exe
Token: SeUndockPrivilege	3208	wmic.exe
Token: SeManageVolumePrivilege	3208	wmic.exe

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 3512 wrote to memory of 4944	3512	0bb64c9c095b99117d8250f97cda9a257985ce3ba6b5891796c7ece426b61ed0.exe	84
PID 3512 wrote to memory of 4944	3512	0bb64c9c095b99117d8250f97cda9a257985ce3ba6b5891796c7ece426b61ed0.exe	84
PID 3512 wrote to memory of 408	3512	0bb64c9c095b99117d8250f97cda9a257985ce3ba6b5891796c7ece426b61ed0.exe	87
PID 3512 wrote to memory of 408	3512	0bb64c9c095b99117d8250f97cda9a257985ce3ba6b5891796c7ece426b61ed0.exe	87
PID 3512 wrote to memory of 1744	3512	0bb64c9c095b99117d8250f97cda9a257985ce3ba6b5891796c7ece426b61ed0.exe	90
PID 3512 wrote to memory of 1744	3512	0bb64c9c095b99117d8250f97cda9a257985ce3ba6b5891796c7ece426b61ed0.exe	90
PID 3512 wrote to memory of 3916	3512	0bb64c9c095b99117d8250f97cda9a257985ce3ba6b5891796c7ece426b61ed0.exe	93
PID 3512 wrote to memory of 3916	3512	0bb64c9c095b99117d8250f97cda9a257985ce3ba6b5891796c7ece426b61ed0.exe	93
PID 3512 wrote to memory of 5000	3512	0bb64c9c095b99117d8250f97cda9a257985ce3ba6b5891796c7ece426b61ed0.exe	95
PID 3512 wrote to memory of 5000	3512	0bb64c9c095b99117d8250f97cda9a257985ce3ba6b5891796c7ece426b61ed0.exe	95
PID 3512 wrote to memory of 1572	3512	0bb64c9c095b99117d8250f97cda9a257985ce3ba6b5891796c7ece426b61ed0.exe	97
PID 3512 wrote to memory of 1572	3512	0bb64c9c095b99117d8250f97cda9a257985ce3ba6b5891796c7ece426b61ed0.exe	97
PID 3512 wrote to memory of 3208	3512	0bb64c9c095b99117d8250f97cda9a257985ce3ba6b5891796c7ece426b61ed0.exe	102
PID 3512 wrote to memory of 3208	3512	0bb64c9c095b99117d8250f97cda9a257985ce3ba6b5891796c7ece426b61ed0.exe	102
PID 3512 wrote to memory of 4588	3512	0bb64c9c095b99117d8250f97cda9a257985ce3ba6b5891796c7ece426b61ed0.exe	104
PID 3512 wrote to memory of 4588	3512	0bb64c9c095b99117d8250f97cda9a257985ce3ba6b5891796c7ece426b61ed0.exe	104
PID 3512 wrote to memory of 2160	3512	0bb64c9c095b99117d8250f97cda9a257985ce3ba6b5891796c7ece426b61ed0.exe	106
PID 3512 wrote to memory of 2160	3512	0bb64c9c095b99117d8250f97cda9a257985ce3ba6b5891796c7ece426b61ed0.exe	106
PID 3512 wrote to memory of 3272	3512	0bb64c9c095b99117d8250f97cda9a257985ce3ba6b5891796c7ece426b61ed0.exe	108
PID 3512 wrote to memory of 3272	3512	0bb64c9c095b99117d8250f97cda9a257985ce3ba6b5891796c7ece426b61ed0.exe	108
PID 3512 wrote to memory of 1872	3512	0bb64c9c095b99117d8250f97cda9a257985ce3ba6b5891796c7ece426b61ed0.exe	111
PID 3512 wrote to memory of 1872	3512	0bb64c9c095b99117d8250f97cda9a257985ce3ba6b5891796c7ece426b61ed0.exe	111
PID 1872 wrote to memory of 1684	1872	cmd.exe	113
PID 1872 wrote to memory of 1684	1872	cmd.exe	113

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
4944	attrib.exe

C:\Users\Admin\AppData\Local\Temp\0bb64c9c095b99117d8250f97cda9a257985ce3ba6b5891796c7ece426b61ed0.exe
"C:\Users\Admin\AppData\Local\Temp\0bb64c9c095b99117d8250f97cda9a257985ce3ba6b5891796c7ece426b61ed0.exe"
1⤵
- Drops file in Drivers directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3512
- C:\Windows\SYSTEM32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\0bb64c9c095b99117d8250f97cda9a257985ce3ba6b5891796c7ece426b61ed0.exe"
  2⤵
  - Views/modifies file attributes
  PID:4944
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\0bb64c9c095b99117d8250f97cda9a257985ce3ba6b5891796c7ece426b61ed0.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:408
- 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⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1744
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Get-ItemPropertyValue -Path HKCU:SOFTWARE\Roblox\RobloxStudioBrowser\roblox.com -Name .ROBLOSECURITY
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3916
- 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:5000
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1572
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:3208
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:4588
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Get-ItemPropertyValue -Path 'HKLM:System\CurrentControlSet\Control\Session Manager\Environment' -Name PROCESSOR_IDENTIFIER
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  PID:2160
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:3272
- C:\Windows\SYSTEM32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\0bb64c9c095b99117d8250f97cda9a257985ce3ba6b5891796c7ece426b61ed0.exe" && pause
  2⤵
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:1872
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:1684

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

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

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

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StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 944B
SHA256 21e5d7ccf80a293e6ba30ed728846ca19c929c52b96e2c8d34e27cd2234f1d45
MD5 d28a889fd956d5cb3accfbaf1143eb6f
SHA1 157ba54b365341f8ff06707d996b3635da8446f7
SHA512 0b6d88deb9be85722e6a78d5886d49f2caf407a59e128d2b4ed74c1356f9928c40048a62731959f2460e9ff9d9feee311043d2a37abe3bb92c2b76a44281478c
MD5 SHA1 SHA512

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StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 948B
SHA256 4640ba4001fd16a593315299cbdd4988dc2c7075820687f1018aac40aca95c26
MD5 c65738617888921a153bd9b1ef516ee7
SHA1 5245e71ea3c181d76320c857b639272ac9e079b1
SHA512 2e2a0ebd93f9d8dd07a7599054bce232683e9add9a35e77b584618040bcfd84a42545352519ec4736cc379002210b6f3ed2d905591c6925c0981b0392b495bfa
MD5 SHA1 SHA512

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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 469da678c3c0364b1b511962cffd44cbfc10aab5c1c528c0c09fd952f08d8a2c
MD5 ec1ba4a995d866b282087b26a0539bbc
SHA1 c4aeae2bc3fa9a898680648b20102f01e8a811cf
SHA512 07bf757ec9d0d368d3ef1bfc2b562895e2708757f8fefa04fa50beaa6fb38af1018ea0cfccf5666c5c8baa4c894deead9652c53e0608aa6a83ef5b396dba43e9
MD5 SHA1 SHA512

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__PSScriptPolicyTest_xe4ksdri.v1g.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_xe4ksdri.v1g.ps1
Size 60B
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
MD5 SHA1 SHA512

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memory/408-13-0x00007FF8D9620000-0x00007FF8DA0E1000-memory.dmp

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memory/408-14-0x00007FF8D9620000-0x00007FF8DA0E1000-memory.dmp

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memory/408-15-0x00007FF8D9620000-0x00007FF8DA0E1000-memory.dmp

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memory/408-18-0x00007FF8D9620000-0x00007FF8DA0E1000-memory.dmp

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memory/408-8-0x000001C2E4110000-0x000001C2E4132000-memory.dmp

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memory/3512-34-0x000001FD68C10000-0x000001FD68C60000-memory.dmp

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memory/3512-33-0x000001FD68B90000-0x000001FD68C06000-memory.dmp

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memory/3512-35-0x000001FD689E0000-0x000001FD689FE000-memory.dmp

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memory/3512-1-0x000001FD4E440000-0x000001FD4E480000-memory.dmp

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memory/3512-0-0x00007FF8D9623000-0x00007FF8D9625000-memory.dmp

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memory/3512-71-0x000001FD68B30000-0x000001FD68B3A000-memory.dmp

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memory/3512-72-0x000001FD68B60000-0x000001FD68B72000-memory.dmp

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memory/3512-2-0x00007FF8D9620000-0x00007FF8DA0E1000-memory.dmp

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memory/3512-90-0x00007FF8D9620000-0x00007FF8DA0E1000-memory.dmp

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