umbral | 10fc7787e75df4375d177ade5d874691e815204bba4034b54a2b053ad26a1f0d

Resubmissions

27-01-2025 03:08

250127-dm6qssxne1 10

26-01-2025 02:14

250126-cn4gdszmcr 10

Analysis

max time kernel
6s
max time network
10s
platform
windows11-21h2_x64
resource
win11-20241023-en
resource tags

arch:x64arch:x86image:win11-20241023-enlocale:en-usos:windows11-21h2-x64system
submitted
27-01-2025 03:08

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General

Target

mapleC2.exe
Size

229KB
MD5

8fdc5324c6283723749bec8199a6078e
SHA1

d9480e0b5d4dffbc82f542c66d3f0efc0f18c95c
SHA256

10fc7787e75df4375d177ade5d874691e815204bba4034b54a2b053ad26a1f0d
SHA512

f375bec52dfd7f6f86db525a734c9331152975ad43633b77fc2fb0df31c4e3e408410ab14262fc9f6af650f8ae6c1fa15583c7828cdf0b1ade1c9be6548ae3f4
SSDEEP

6144:tloZM0rIkd8g+EtXHkv/iD4JRBJoOJBidHaIJtMVtb8e1mj5i:voZDL+EP8JRBJoOJBidHaIJtMfkg

Score

10^/10

umbral execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/4624-1-0x000001FEA1A60000-0x000001FEA1AA0000-memory.dmp	family_umbral

Umbral
Umbral stealer is an opensource moduler stealer written in C#.
stealer umbral
Umbral family
umbral

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
2408	powershell.exe
1152	powershell.exe
1564	powershell.exe
4312	powershell.exe

Reads user/profile data of web browsers 3 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

Credentials from Web Browsers
T1555.003

Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service

T1102

flow	ioc
1	discord.com
5	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
1	ip-api.com

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
3752	wmic.exe

Suspicious behavior: EnumeratesProcesses 11 IoCs

pid	Process
4624	mapleC2.exe
2408	powershell.exe
2408	powershell.exe
1152	powershell.exe
1152	powershell.exe
1564	powershell.exe
1564	powershell.exe
5064	powershell.exe
5064	powershell.exe
4312	powershell.exe
4312	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	4624	mapleC2.exe
Token: SeIncreaseQuotaPrivilege	2044	wmic.exe
Token: SeSecurityPrivilege	2044	wmic.exe
Token: SeTakeOwnershipPrivilege	2044	wmic.exe
Token: SeLoadDriverPrivilege	2044	wmic.exe
Token: SeSystemProfilePrivilege	2044	wmic.exe
Token: SeSystemtimePrivilege	2044	wmic.exe
Token: SeProfSingleProcessPrivilege	2044	wmic.exe
Token: SeIncBasePriorityPrivilege	2044	wmic.exe
Token: SeCreatePagefilePrivilege	2044	wmic.exe
Token: SeBackupPrivilege	2044	wmic.exe
Token: SeRestorePrivilege	2044	wmic.exe
Token: SeShutdownPrivilege	2044	wmic.exe
Token: SeDebugPrivilege	2044	wmic.exe
Token: SeSystemEnvironmentPrivilege	2044	wmic.exe
Token: SeRemoteShutdownPrivilege	2044	wmic.exe
Token: SeUndockPrivilege	2044	wmic.exe
Token: SeManageVolumePrivilege	2044	wmic.exe
Token: 33	2044	wmic.exe
Token: 34	2044	wmic.exe
Token: 35	2044	wmic.exe
Token: 36	2044	wmic.exe
Token: SeIncreaseQuotaPrivilege	2044	wmic.exe
Token: SeSecurityPrivilege	2044	wmic.exe
Token: SeTakeOwnershipPrivilege	2044	wmic.exe
Token: SeLoadDriverPrivilege	2044	wmic.exe
Token: SeSystemProfilePrivilege	2044	wmic.exe
Token: SeSystemtimePrivilege	2044	wmic.exe
Token: SeProfSingleProcessPrivilege	2044	wmic.exe
Token: SeIncBasePriorityPrivilege	2044	wmic.exe
Token: SeCreatePagefilePrivilege	2044	wmic.exe
Token: SeBackupPrivilege	2044	wmic.exe
Token: SeRestorePrivilege	2044	wmic.exe
Token: SeShutdownPrivilege	2044	wmic.exe
Token: SeDebugPrivilege	2044	wmic.exe
Token: SeSystemEnvironmentPrivilege	2044	wmic.exe
Token: SeRemoteShutdownPrivilege	2044	wmic.exe
Token: SeUndockPrivilege	2044	wmic.exe
Token: SeManageVolumePrivilege	2044	wmic.exe
Token: 33	2044	wmic.exe
Token: 34	2044	wmic.exe
Token: 35	2044	wmic.exe
Token: 36	2044	wmic.exe
Token: SeDebugPrivilege	2408	powershell.exe
Token: SeDebugPrivilege	1152	powershell.exe
Token: SeDebugPrivilege	1564	powershell.exe
Token: SeDebugPrivilege	5064	powershell.exe
Token: SeIncreaseQuotaPrivilege	4504	wmic.exe
Token: SeSecurityPrivilege	4504	wmic.exe
Token: SeTakeOwnershipPrivilege	4504	wmic.exe
Token: SeLoadDriverPrivilege	4504	wmic.exe
Token: SeSystemProfilePrivilege	4504	wmic.exe
Token: SeSystemtimePrivilege	4504	wmic.exe
Token: SeProfSingleProcessPrivilege	4504	wmic.exe
Token: SeIncBasePriorityPrivilege	4504	wmic.exe
Token: SeCreatePagefilePrivilege	4504	wmic.exe
Token: SeBackupPrivilege	4504	wmic.exe
Token: SeRestorePrivilege	4504	wmic.exe
Token: SeShutdownPrivilege	4504	wmic.exe
Token: SeDebugPrivilege	4504	wmic.exe
Token: SeSystemEnvironmentPrivilege	4504	wmic.exe
Token: SeRemoteShutdownPrivilege	4504	wmic.exe
Token: SeUndockPrivilege	4504	wmic.exe
Token: SeManageVolumePrivilege	4504	wmic.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 4624 wrote to memory of 2044	4624	mapleC2.exe	77
PID 4624 wrote to memory of 2044	4624	mapleC2.exe	77
PID 4624 wrote to memory of 2408	4624	mapleC2.exe	80
PID 4624 wrote to memory of 2408	4624	mapleC2.exe	80
PID 4624 wrote to memory of 1152	4624	mapleC2.exe	82
PID 4624 wrote to memory of 1152	4624	mapleC2.exe	82
PID 4624 wrote to memory of 1564	4624	mapleC2.exe	84
PID 4624 wrote to memory of 1564	4624	mapleC2.exe	84
PID 4624 wrote to memory of 5064	4624	mapleC2.exe	86
PID 4624 wrote to memory of 5064	4624	mapleC2.exe	86
PID 4624 wrote to memory of 4504	4624	mapleC2.exe	88
PID 4624 wrote to memory of 4504	4624	mapleC2.exe	88
PID 4624 wrote to memory of 2436	4624	mapleC2.exe	90
PID 4624 wrote to memory of 2436	4624	mapleC2.exe	90
PID 4624 wrote to memory of 4340	4624	mapleC2.exe	92
PID 4624 wrote to memory of 4340	4624	mapleC2.exe	92
PID 4624 wrote to memory of 4312	4624	mapleC2.exe	94
PID 4624 wrote to memory of 4312	4624	mapleC2.exe	94
PID 4624 wrote to memory of 3752	4624	mapleC2.exe	96
PID 4624 wrote to memory of 3752	4624	mapleC2.exe	96

C:\Users\Admin\AppData\Local\Temp\mapleC2.exe
"C:\Users\Admin\AppData\Local\Temp\mapleC2.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4624
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2044
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\mapleC2.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2408
- 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:1152
- 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:1564
- 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:5064
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:4504
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:2436
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:4340
- 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:4312
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:3752

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

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Web Service

T1102

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log

Filesize
2KB

MD5
627073ee3ca9676911bee35548eff2b8

SHA1
4c4b68c65e2cab9864b51167d710aa29ebdcff2e

SHA256
85b280a39fc31ba1e15fb06102a05b8405ff3b82feb181d4170f04e466dd647c

SHA512
3c5f6c03e253b83c57e8d6f0334187dbdcdf4fa549eecd36cbc1322dca6d3ca891dc6a019c49ec2eafb88f82d0434299c31e4dfaab123acb42e0546218f311fb

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
944B

MD5
aa4f31835d07347297d35862c9045f4a

SHA1
83e728008935d30f98e5480fba4fbccf10cefb05

SHA256
99c83bc5c531e49d4240700142f3425aba74e18ebcc23556be32238ffde9cce0

SHA512
ec3a4bee8335007b8753ae8ac42287f2b3bcbb258f7fc3fb15c9f8d3e611cb9bf6ae2d3034953286a34f753e9ec33f7495e064bab0e8c7fcedd75d6e5eb66629

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
948B

MD5
711b161528f4959c4b7463036c7324ec

SHA1
53b30cc796c0dfe0cd4c4406202a19139cb5407d

SHA256
7c077fb04d4911778ab648b657b43c9b464393d734dc7fa029ee0f085c6a5638

SHA512
565d0e3e229894de91ad37a16c261bf380e983ffda750f32e8ad361c0606c62043a0188f45d252fecabc6438bc9e7b2c424b101073162ba9633bacd03b42af9b

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
1KB

MD5
7332074ae2b01262736b6fbd9e100dac

SHA1
22f992165065107cc9417fa4117240d84414a13c

SHA256
baea84fda6c1f13090b8cbd91c920848946f10ce155ef31a1df4cd453ee7e4aa

SHA512
4ae6f0e012c31ac1fc2ff4a8877ce2b4667c45b6e651de798318a39a2b6fd39a6f72dffa8b0b89b7a045a27d724d195656faa25a9fec79b22f37ddebb5d22da2

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
1KB

MD5
5f54b3cc864edf7404ea3627f6e81219

SHA1
b5fc681cea49caca090bbef1e5cf9863378e55ef

SHA256
2ae7a49831c05f8cabeb995cb8b98b9b95a323d957f84a126ec8776a9fe3da80

SHA512
025e4ef948a662a11e3ff10022795ed444dd045079f53f116e77b5178a78eff41b59a3f603f4216c8b2e5f0913c31ddeca62aa0e0e0a09e913d05223204c0afb

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_5bpleu1d.d0b.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/2408-12-0x000001C5EDC20000-0x000001C5EDC42000-memory.dmp

Filesize
136KB

Download
memory/2408-13-0x00007FFF24490000-0x00007FFF24F52000-memory.dmp

Filesize
10.8MB

Download
memory/2408-14-0x00007FFF24490000-0x00007FFF24F52000-memory.dmp

Filesize
10.8MB

Download
memory/2408-17-0x00007FFF24490000-0x00007FFF24F52000-memory.dmp

Filesize
10.8MB

Download
memory/2408-3-0x00007FFF24490000-0x00007FFF24F52000-memory.dmp

Filesize
10.8MB

Download
memory/4624-31-0x000001FEA38E0000-0x000001FEA3930000-memory.dmp

Filesize
320KB

Download
memory/4624-30-0x000001FEBC2C0000-0x000001FEBC336000-memory.dmp

Filesize
472KB

Download
memory/4624-32-0x000001FEA3750000-0x000001FEA376E000-memory.dmp

Filesize
120KB

Download
memory/4624-1-0x000001FEA1A60000-0x000001FEA1AA0000-memory.dmp

Filesize
256KB

Download
memory/4624-0-0x00007FFF24493000-0x00007FFF24495000-memory.dmp

Filesize
8KB

Download
memory/4624-67-0x000001FEA3790000-0x000001FEA379A000-memory.dmp

Filesize
40KB

Download
memory/4624-68-0x000001FEA3930000-0x000001FEA3942000-memory.dmp

Filesize
72KB

Download
memory/4624-2-0x00007FFF24490000-0x00007FFF24F52000-memory.dmp

Filesize
10.8MB

Download
memory/4624-87-0x00007FFF24490000-0x00007FFF24F52000-memory.dmp

Filesize
10.8MB

Download