umbral | cfb7119e9b1eea0c3f511fb51952399c3f10edb91e12030e49a30172b0510e7e

Analysis

max time kernel
142s
max time network
130s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
24/08/2024, 08:58

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General

Target
cfb7119e9b1eea0c3f511fb51952399c3f10edb91e12030e49a30172b0510e7e.exe
Size 229KB
Sample240824-kxehmavanm
SHA256 cfb7119e9b1eea0c3f511fb51952399c3f10edb91e12030e49a30172b0510e7e
MD5 ea031754ac9fe28dbc0c5915cb638e44
SHA1 14b2c7b94aefdfc911e26fc5deb6eb8b6d7c0aed
SHA512 39a0790b3bae0862b1ba87bd6d1165694ba09cfa5104935e00ebaa13924699b2efba92ee6e744d3d820a9c05f80fa41fa1649498dce8f430835e8c6e813c25bb
SSDEEP 6144:9loZM9rIkd8g+EtXHkv/iD4RugVzZqStvY5rWWDFZb8e1m7i:foZOL+EP8RugVzZqStvY5rWWD3V
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/1300-1-0x0000024FF9DD0000-0x0000024FF9E10000-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

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
3764	powershell.exe
4068	powershell.exe
960	powershell.exe
4260	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	cfb7119e9b1eea0c3f511fb51952399c3f10edb91e12030e49a30172b0510e7e.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
15	discord.com
14	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
12	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
4976	cmd.exe
3412	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
2984	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
3412	PING.EXE

Suspicious behavior: EnumeratesProcesses 10 IoCs

pid	Process
4260	powershell.exe
4260	powershell.exe
3764	powershell.exe
3764	powershell.exe
4068	powershell.exe
4068	powershell.exe
1852	powershell.exe
1852	powershell.exe
960	powershell.exe
960	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	1300	cfb7119e9b1eea0c3f511fb51952399c3f10edb91e12030e49a30172b0510e7e.exe
Token: SeDebugPrivilege	4260	powershell.exe
Token: SeDebugPrivilege	3764	powershell.exe
Token: SeDebugPrivilege	4068	powershell.exe
Token: SeDebugPrivilege	1852	powershell.exe
Token: SeIncreaseQuotaPrivilege	4628	wmic.exe
Token: SeSecurityPrivilege	4628	wmic.exe
Token: SeTakeOwnershipPrivilege	4628	wmic.exe
Token: SeLoadDriverPrivilege	4628	wmic.exe
Token: SeSystemProfilePrivilege	4628	wmic.exe
Token: SeSystemtimePrivilege	4628	wmic.exe
Token: SeProfSingleProcessPrivilege	4628	wmic.exe
Token: SeIncBasePriorityPrivilege	4628	wmic.exe
Token: SeCreatePagefilePrivilege	4628	wmic.exe
Token: SeBackupPrivilege	4628	wmic.exe
Token: SeRestorePrivilege	4628	wmic.exe
Token: SeShutdownPrivilege	4628	wmic.exe
Token: SeDebugPrivilege	4628	wmic.exe
Token: SeSystemEnvironmentPrivilege	4628	wmic.exe
Token: SeRemoteShutdownPrivilege	4628	wmic.exe
Token: SeUndockPrivilege	4628	wmic.exe
Token: SeManageVolumePrivilege	4628	wmic.exe
Token: 33	4628	wmic.exe
Token: 34	4628	wmic.exe
Token: 35	4628	wmic.exe
Token: 36	4628	wmic.exe
Token: SeIncreaseQuotaPrivilege	4628	wmic.exe
Token: SeSecurityPrivilege	4628	wmic.exe
Token: SeTakeOwnershipPrivilege	4628	wmic.exe
Token: SeLoadDriverPrivilege	4628	wmic.exe
Token: SeSystemProfilePrivilege	4628	wmic.exe
Token: SeSystemtimePrivilege	4628	wmic.exe
Token: SeProfSingleProcessPrivilege	4628	wmic.exe
Token: SeIncBasePriorityPrivilege	4628	wmic.exe
Token: SeCreatePagefilePrivilege	4628	wmic.exe
Token: SeBackupPrivilege	4628	wmic.exe
Token: SeRestorePrivilege	4628	wmic.exe
Token: SeShutdownPrivilege	4628	wmic.exe
Token: SeDebugPrivilege	4628	wmic.exe
Token: SeSystemEnvironmentPrivilege	4628	wmic.exe
Token: SeRemoteShutdownPrivilege	4628	wmic.exe
Token: SeUndockPrivilege	4628	wmic.exe
Token: SeManageVolumePrivilege	4628	wmic.exe
Token: 33	4628	wmic.exe
Token: 34	4628	wmic.exe
Token: 35	4628	wmic.exe
Token: 36	4628	wmic.exe
Token: SeIncreaseQuotaPrivilege	2620	wmic.exe
Token: SeSecurityPrivilege	2620	wmic.exe
Token: SeTakeOwnershipPrivilege	2620	wmic.exe
Token: SeLoadDriverPrivilege	2620	wmic.exe
Token: SeSystemProfilePrivilege	2620	wmic.exe
Token: SeSystemtimePrivilege	2620	wmic.exe
Token: SeProfSingleProcessPrivilege	2620	wmic.exe
Token: SeIncBasePriorityPrivilege	2620	wmic.exe
Token: SeCreatePagefilePrivilege	2620	wmic.exe
Token: SeBackupPrivilege	2620	wmic.exe
Token: SeRestorePrivilege	2620	wmic.exe
Token: SeShutdownPrivilege	2620	wmic.exe
Token: SeDebugPrivilege	2620	wmic.exe
Token: SeSystemEnvironmentPrivilege	2620	wmic.exe
Token: SeRemoteShutdownPrivilege	2620	wmic.exe
Token: SeUndockPrivilege	2620	wmic.exe
Token: SeManageVolumePrivilege	2620	wmic.exe

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 1300 wrote to memory of 2888	1300	cfb7119e9b1eea0c3f511fb51952399c3f10edb91e12030e49a30172b0510e7e.exe	84
PID 1300 wrote to memory of 2888	1300	cfb7119e9b1eea0c3f511fb51952399c3f10edb91e12030e49a30172b0510e7e.exe	84
PID 1300 wrote to memory of 4260	1300	cfb7119e9b1eea0c3f511fb51952399c3f10edb91e12030e49a30172b0510e7e.exe	86
PID 1300 wrote to memory of 4260	1300	cfb7119e9b1eea0c3f511fb51952399c3f10edb91e12030e49a30172b0510e7e.exe	86
PID 1300 wrote to memory of 3764	1300	cfb7119e9b1eea0c3f511fb51952399c3f10edb91e12030e49a30172b0510e7e.exe	89
PID 1300 wrote to memory of 3764	1300	cfb7119e9b1eea0c3f511fb51952399c3f10edb91e12030e49a30172b0510e7e.exe	89
PID 1300 wrote to memory of 4068	1300	cfb7119e9b1eea0c3f511fb51952399c3f10edb91e12030e49a30172b0510e7e.exe	94
PID 1300 wrote to memory of 4068	1300	cfb7119e9b1eea0c3f511fb51952399c3f10edb91e12030e49a30172b0510e7e.exe	94
PID 1300 wrote to memory of 1852	1300	cfb7119e9b1eea0c3f511fb51952399c3f10edb91e12030e49a30172b0510e7e.exe	96
PID 1300 wrote to memory of 1852	1300	cfb7119e9b1eea0c3f511fb51952399c3f10edb91e12030e49a30172b0510e7e.exe	96
PID 1300 wrote to memory of 4628	1300	cfb7119e9b1eea0c3f511fb51952399c3f10edb91e12030e49a30172b0510e7e.exe	100
PID 1300 wrote to memory of 4628	1300	cfb7119e9b1eea0c3f511fb51952399c3f10edb91e12030e49a30172b0510e7e.exe	100
PID 1300 wrote to memory of 2620	1300	cfb7119e9b1eea0c3f511fb51952399c3f10edb91e12030e49a30172b0510e7e.exe	102
PID 1300 wrote to memory of 2620	1300	cfb7119e9b1eea0c3f511fb51952399c3f10edb91e12030e49a30172b0510e7e.exe	102
PID 1300 wrote to memory of 3748	1300	cfb7119e9b1eea0c3f511fb51952399c3f10edb91e12030e49a30172b0510e7e.exe	104
PID 1300 wrote to memory of 3748	1300	cfb7119e9b1eea0c3f511fb51952399c3f10edb91e12030e49a30172b0510e7e.exe	104
PID 1300 wrote to memory of 960	1300	cfb7119e9b1eea0c3f511fb51952399c3f10edb91e12030e49a30172b0510e7e.exe	106
PID 1300 wrote to memory of 960	1300	cfb7119e9b1eea0c3f511fb51952399c3f10edb91e12030e49a30172b0510e7e.exe	106
PID 1300 wrote to memory of 2984	1300	cfb7119e9b1eea0c3f511fb51952399c3f10edb91e12030e49a30172b0510e7e.exe	108
PID 1300 wrote to memory of 2984	1300	cfb7119e9b1eea0c3f511fb51952399c3f10edb91e12030e49a30172b0510e7e.exe	108
PID 1300 wrote to memory of 4976	1300	cfb7119e9b1eea0c3f511fb51952399c3f10edb91e12030e49a30172b0510e7e.exe	110
PID 1300 wrote to memory of 4976	1300	cfb7119e9b1eea0c3f511fb51952399c3f10edb91e12030e49a30172b0510e7e.exe	110
PID 4976 wrote to memory of 3412	4976	cmd.exe	112
PID 4976 wrote to memory of 3412	4976	cmd.exe	112

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
2888	attrib.exe

C:\Users\Admin\AppData\Local\Temp\cfb7119e9b1eea0c3f511fb51952399c3f10edb91e12030e49a30172b0510e7e.exe
"C:\Users\Admin\AppData\Local\Temp\cfb7119e9b1eea0c3f511fb51952399c3f10edb91e12030e49a30172b0510e7e.exe"
1⤵
- Drops file in Drivers directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1300
- C:\Windows\SYSTEM32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\cfb7119e9b1eea0c3f511fb51952399c3f10edb91e12030e49a30172b0510e7e.exe"
  2⤵
  - Views/modifies file attributes
  PID:2888
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\cfb7119e9b1eea0c3f511fb51952399c3f10edb91e12030e49a30172b0510e7e.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4260
- 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:3764
- 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:4068
- 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:1852
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:4628
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2620
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:3748
- 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:960
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:2984
- C:\Windows\SYSTEM32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\cfb7119e9b1eea0c3f511fb51952399c3f10edb91e12030e49a30172b0510e7e.exe" && pause
  2⤵
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:4976
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:3412

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 2360634e63e8f0b5748e2c56ebb8f4aa78e71008ea7b5c9ca1c49be03b49557d
MD5 6d3e9c29fe44e90aae6ed30ccf799ca8
SHA1 c7974ef72264bbdf13a2793ccf1aed11bc565dce
SHA512 60c38c4367352537545d859f64b9c5cbada94240478d1d039fd27b5ecba4dc1c90051557c16d802269703b873546ead416279c0a80c6fd5e49ad361cef22596a
MD5 SHA1 SHA512

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StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 948B
SHA256 98d3c70d7004fa807897317bd6cd3e977b9b6c72d4d2565aca0f9f8b1c315cba
MD5 966914e2e771de7a4a57a95b6ecfa8a9
SHA1 7a32282fd51dd032967ed4d9a40cc57e265aeff2
SHA512 dc39c7124a9c7c8d4c7e8e16290c46360b8d9a8f4e43edaacbbeb09bdcf20159a53db54d2b322372001b6a3de52b2f88e9088b5fdbc7638816ae0d122bb015f5
MD5 SHA1 SHA512

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StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 1KB
SHA256 5d139a221345fe53f28d2a772c8e4c8e988925b6fc228c81baa98f824a44c67c
MD5 4950bb37b35849b09a86bc7c01c8952a
SHA1 f9650f41d105d3affa7b19d58ab336a92aab4793
SHA512 5b39b845d6d53acd9a20fa1e3e081f7a4c5bbea4641ed53e6d1df8fb245a57e7a659cbdbdfe41ce642b6b2a7ff98b3dd3c9a5bcea7d226cead546d097f361a40
MD5 SHA1 SHA512

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StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 1KB
SHA256 4479db3e2faf952801a1506140f3612e267e9bb4f5d509b0d63204429de8eef3
MD5 58b80fe8da7d23cd3c9707f4ce93457e
SHA1 7d1c58b992631d82cabd38d738ccca072c91c124
SHA512 82ef5d29aaf46b5fef467185193f03612058c4bbd7b9926293a79c18deefe137811f95dc59feaa649376c8711ca3253177177b538d2d953147db1ed719cba5e8
MD5 SHA1 SHA512

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__PSScriptPolicyTest_oqgmj22s.5fd.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_oqgmj22s.5fd.ps1
Size 60B
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
MD5 SHA1 SHA512

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memory/1300-71-0x0000024FFBC50000-0x0000024FFBC5A000-memory.dmp

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memory/1300-35-0x0000024FFC4C0000-0x0000024FFC4DE000-memory.dmp

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memory/1300-90-0x00007FF960200000-0x00007FF960CC1000-memory.dmp

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memory/1300-72-0x0000024FFC500000-0x0000024FFC512000-memory.dmp

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memory/1300-2-0x00007FF960200000-0x00007FF960CC1000-memory.dmp

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memory/1300-33-0x0000024FFC540000-0x0000024FFC5B6000-memory.dmp

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memory/1300-34-0x0000024FFC5C0000-0x0000024FFC610000-memory.dmp

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memory/1300-0-0x00007FF960203000-0x00007FF960205000-memory.dmp

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memory/1300-1-0x0000024FF9DD0000-0x0000024FF9E10000-memory.dmp

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memory/4260-15-0x00007FF960200000-0x00007FF960CC1000-memory.dmp

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memory/4260-13-0x00007FF960200000-0x00007FF960CC1000-memory.dmp

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memory/4260-14-0x00007FF960200000-0x00007FF960CC1000-memory.dmp

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memory/4260-12-0x000001DCEC7B0000-0x000001DCEC7D2000-memory.dmp

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memory/4260-18-0x00007FF960200000-0x00007FF960CC1000-memory.dmp

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