umbral | 5e2d0c0c469f7124301525e041d4184eff6ccf3c930f269dcf20a8ae4aed704f

Analysis

max time kernel
91s
max time network
93s
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, 16:45

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General

Target
PaypalChecker/PaypalChecker.exe
Size 241KB
Sample240824-t9fe5a1eql
SHA256 4b7bc1185048cb51fde3554326846cf426d7e1d3aa372349adb8c6e921762ce6
MD5 51b45616b6902c84fed4f09c0ae52fca
SHA1 39f490a578c996ec11601b203c600c7746cb9802
SHA512 b7e6e95072e0b27bb2aad79e6f1ad6f17000bd724e752679ddaead7c50655e52a37b5b082db7c1173992873bc4c61ded852cd605b4b5620f176772be0d31df31
SSDEEP 6144:wloZM+rIkd8g+EtXHkv/iD4YMVIp3cw/9eHp0AV39b8e1mSfi5F:+oZtL+EP8YMVIp3cw/9eHp0AVNpKr
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/2108-1-0x000001A321A00000-0x000001A321A42000-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
4180	powershell.exe
3272	powershell.exe
4316	powershell.exe
4624	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	PaypalChecker.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
42	discord.com
43	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
8	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
1744	cmd.exe
3724	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
1576	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
3724	PING.EXE

Suspicious behavior: EnumeratesProcesses 11 IoCs

pid	Process
2108	PaypalChecker.exe
4624	powershell.exe
4624	powershell.exe
4316	powershell.exe
4316	powershell.exe
4180	powershell.exe
4180	powershell.exe
4072	powershell.exe
4072	powershell.exe
3272	powershell.exe
3272	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2108	PaypalChecker.exe
Token: SeIncreaseQuotaPrivilege	1744	wmic.exe
Token: SeSecurityPrivilege	1744	wmic.exe
Token: SeTakeOwnershipPrivilege	1744	wmic.exe
Token: SeLoadDriverPrivilege	1744	wmic.exe
Token: SeSystemProfilePrivilege	1744	wmic.exe
Token: SeSystemtimePrivilege	1744	wmic.exe
Token: SeProfSingleProcessPrivilege	1744	wmic.exe
Token: SeIncBasePriorityPrivilege	1744	wmic.exe
Token: SeCreatePagefilePrivilege	1744	wmic.exe
Token: SeBackupPrivilege	1744	wmic.exe
Token: SeRestorePrivilege	1744	wmic.exe
Token: SeShutdownPrivilege	1744	wmic.exe
Token: SeDebugPrivilege	1744	wmic.exe
Token: SeSystemEnvironmentPrivilege	1744	wmic.exe
Token: SeRemoteShutdownPrivilege	1744	wmic.exe
Token: SeUndockPrivilege	1744	wmic.exe
Token: SeManageVolumePrivilege	1744	wmic.exe
Token: 33	1744	wmic.exe
Token: 34	1744	wmic.exe
Token: 35	1744	wmic.exe
Token: 36	1744	wmic.exe
Token: SeIncreaseQuotaPrivilege	1744	wmic.exe
Token: SeSecurityPrivilege	1744	wmic.exe
Token: SeTakeOwnershipPrivilege	1744	wmic.exe
Token: SeLoadDriverPrivilege	1744	wmic.exe
Token: SeSystemProfilePrivilege	1744	wmic.exe
Token: SeSystemtimePrivilege	1744	wmic.exe
Token: SeProfSingleProcessPrivilege	1744	wmic.exe
Token: SeIncBasePriorityPrivilege	1744	wmic.exe
Token: SeCreatePagefilePrivilege	1744	wmic.exe
Token: SeBackupPrivilege	1744	wmic.exe
Token: SeRestorePrivilege	1744	wmic.exe
Token: SeShutdownPrivilege	1744	wmic.exe
Token: SeDebugPrivilege	1744	wmic.exe
Token: SeSystemEnvironmentPrivilege	1744	wmic.exe
Token: SeRemoteShutdownPrivilege	1744	wmic.exe
Token: SeUndockPrivilege	1744	wmic.exe
Token: SeManageVolumePrivilege	1744	wmic.exe
Token: 33	1744	wmic.exe
Token: 34	1744	wmic.exe
Token: 35	1744	wmic.exe
Token: 36	1744	wmic.exe
Token: SeDebugPrivilege	4624	powershell.exe
Token: SeDebugPrivilege	4316	powershell.exe
Token: SeDebugPrivilege	4180	powershell.exe
Token: SeDebugPrivilege	4072	powershell.exe
Token: SeIncreaseQuotaPrivilege	1660	wmic.exe
Token: SeSecurityPrivilege	1660	wmic.exe
Token: SeTakeOwnershipPrivilege	1660	wmic.exe
Token: SeLoadDriverPrivilege	1660	wmic.exe
Token: SeSystemProfilePrivilege	1660	wmic.exe
Token: SeSystemtimePrivilege	1660	wmic.exe
Token: SeProfSingleProcessPrivilege	1660	wmic.exe
Token: SeIncBasePriorityPrivilege	1660	wmic.exe
Token: SeCreatePagefilePrivilege	1660	wmic.exe
Token: SeBackupPrivilege	1660	wmic.exe
Token: SeRestorePrivilege	1660	wmic.exe
Token: SeShutdownPrivilege	1660	wmic.exe
Token: SeDebugPrivilege	1660	wmic.exe
Token: SeSystemEnvironmentPrivilege	1660	wmic.exe
Token: SeRemoteShutdownPrivilege	1660	wmic.exe
Token: SeUndockPrivilege	1660	wmic.exe
Token: SeManageVolumePrivilege	1660	wmic.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 2108 wrote to memory of 1744	2108	PaypalChecker.exe	86
PID 2108 wrote to memory of 1744	2108	PaypalChecker.exe	86
PID 2108 wrote to memory of 1784	2108	PaypalChecker.exe	91
PID 2108 wrote to memory of 1784	2108	PaypalChecker.exe	91
PID 2108 wrote to memory of 4624	2108	PaypalChecker.exe	93
PID 2108 wrote to memory of 4624	2108	PaypalChecker.exe	93
PID 2108 wrote to memory of 4316	2108	PaypalChecker.exe	95
PID 2108 wrote to memory of 4316	2108	PaypalChecker.exe	95
PID 2108 wrote to memory of 4180	2108	PaypalChecker.exe	97
PID 2108 wrote to memory of 4180	2108	PaypalChecker.exe	97
PID 2108 wrote to memory of 4072	2108	PaypalChecker.exe	99
PID 2108 wrote to memory of 4072	2108	PaypalChecker.exe	99
PID 2108 wrote to memory of 1660	2108	PaypalChecker.exe	109
PID 2108 wrote to memory of 1660	2108	PaypalChecker.exe	109
PID 2108 wrote to memory of 5000	2108	PaypalChecker.exe	111
PID 2108 wrote to memory of 5000	2108	PaypalChecker.exe	111
PID 2108 wrote to memory of 3664	2108	PaypalChecker.exe	114
PID 2108 wrote to memory of 3664	2108	PaypalChecker.exe	114
PID 2108 wrote to memory of 3272	2108	PaypalChecker.exe	116
PID 2108 wrote to memory of 3272	2108	PaypalChecker.exe	116
PID 2108 wrote to memory of 1576	2108	PaypalChecker.exe	118
PID 2108 wrote to memory of 1576	2108	PaypalChecker.exe	118
PID 2108 wrote to memory of 1744	2108	PaypalChecker.exe	127
PID 2108 wrote to memory of 1744	2108	PaypalChecker.exe	127
PID 1744 wrote to memory of 3724	1744	cmd.exe	129
PID 1744 wrote to memory of 3724	1744	cmd.exe	129

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
1784	attrib.exe

C:\Users\Admin\AppData\Local\Temp\PaypalChecker\PaypalChecker.exe
"C:\Users\Admin\AppData\Local\Temp\PaypalChecker\PaypalChecker.exe"
1⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2108
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1744
- C:\Windows\SYSTEM32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\PaypalChecker\PaypalChecker.exe"
  2⤵
  - Views/modifies file attributes
  PID:1784
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\PaypalChecker\PaypalChecker.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4624
- 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:4316
- 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:4180
- 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:4072
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1660
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:5000
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:3664
- 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:3272
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:1576
- C:\Windows\SYSTEM32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\PaypalChecker\PaypalChecker.exe" && pause
  2⤵
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:1744
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:3724

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

Submit Download

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 10b3d946f07601b28c5cd6ee36fd0fffb41f3d96094a478d088ce30ebf9a694d
MD5 efe05055dc30f1da03bd1653594f8b0a
SHA1 8650a67ec9d1b8eed7caa4e4c86ebb8531bc7ba2
SHA512 5096856b34336cafbd2ee4dc4709bfa39c8794d8fc42777a460b79d52482b699013f237dfee2ecaf2b21487cc933b807bc5bad9b81f7070ba0dc4f6efcfa2f36
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 02b0ab469998ac630b421de245ee243599422e7f2c2f9714085fc5b837891784
MD5 77fad1dec6867fb7dd395c25c46d8ae5
SHA1 abfecfd6c63bb35ec88d98ef210adefc139d793e
SHA512 ac8d9d660992d076e46ffdb7422d4916789a7ca2f5737c711449f518745dee197ed1c08e50f81f92cb7d2d1ea94fe024e77a8295e1be05c5a49a0fd7495776d3
MD5 SHA1 SHA512

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__PSScriptPolicyTest_rkjrn4zl.hxr.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_rkjrn4zl.hxr.ps1
Size 60B
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
MD5 SHA1 SHA512

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memory/2108-69-0x00007FF8B41C0000-0x00007FF8B4C81000-memory.dmp

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memory/2108-35-0x000001A323790000-0x000001A3237AE000-memory.dmp

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memory/2108-91-0x00007FF8B41C0000-0x00007FF8B4C81000-memory.dmp

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memory/2108-73-0x000001A33C220000-0x000001A33C232000-memory.dmp

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memory/2108-2-0x00007FF8B41C0000-0x00007FF8B4C81000-memory.dmp

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memory/2108-33-0x000001A33C1A0000-0x000001A33C216000-memory.dmp

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memory/2108-34-0x000001A33C120000-0x000001A33C170000-memory.dmp

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memory/2108-72-0x000001A3237C0000-0x000001A3237CA000-memory.dmp

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memory/2108-0-0x00007FF8B41C3000-0x00007FF8B41C5000-memory.dmp

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memory/2108-1-0x000001A321A00000-0x000001A321A42000-memory.dmp

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memory/4624-4-0x000001DF75360000-0x000001DF75382000-memory.dmp

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memory/4624-15-0x00007FF8B41C0000-0x00007FF8B4C81000-memory.dmp

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memory/4624-3-0x00007FF8B41C0000-0x00007FF8B4C81000-memory.dmp

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memory/4624-14-0x00007FF8B41C0000-0x00007FF8B4C81000-memory.dmp

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memory/4624-18-0x00007FF8B41C0000-0x00007FF8B4C81000-memory.dmp

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