umbral | 435a2c3b87a6d4e96690d2aae112660823dc52740222c85a80e5f01e9910ee92

Analysis

max time kernel
30s
max time network
31s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
19/09/2024, 02:16

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General

Target

Delta hack pc.exe
Size

231KB
MD5

3b915b9bbc5ddf429f85bf939febe424
SHA1

2278baaf3764a27bc962de75601f4d49b2191592
SHA256

435a2c3b87a6d4e96690d2aae112660823dc52740222c85a80e5f01e9910ee92
SHA512

d83341bf784bed732bf120299824ea066f66f505b6dd0fb0b84396af34877a1ba0c483c805835179be2463dd34503b31260035e78f47ca1396305f60f2be50ed
SSDEEP

6144:xloZM+rIkd8g+EtXHkv/iD4LmfzMOsTPkPFQu//OPub8e1mt6i:DoZtL+EP8LwzMOsTPkPFQu//OKO/

Score

10^/10

umbral credential_access execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral2/memory/4580-1-0x000001C6E1FC0000-0x000001C6E2000000-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
1076	powershell.exe
220	powershell.exe
5040	powershell.exe
3664	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	Delta hack pc.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
24	discord.com
25	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
7	ip-api.com

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
4416	wmic.exe

Suspicious behavior: EnumeratesProcesses 11 IoCs

pid	Process
4580	Delta hack pc.exe
1076	powershell.exe
1076	powershell.exe
220	powershell.exe
220	powershell.exe
5040	powershell.exe
5040	powershell.exe
2608	powershell.exe
2608	powershell.exe
3664	powershell.exe
3664	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	4580	Delta hack pc.exe
Token: SeIncreaseQuotaPrivilege	3000	wmic.exe
Token: SeSecurityPrivilege	3000	wmic.exe
Token: SeTakeOwnershipPrivilege	3000	wmic.exe
Token: SeLoadDriverPrivilege	3000	wmic.exe
Token: SeSystemProfilePrivilege	3000	wmic.exe
Token: SeSystemtimePrivilege	3000	wmic.exe
Token: SeProfSingleProcessPrivilege	3000	wmic.exe
Token: SeIncBasePriorityPrivilege	3000	wmic.exe
Token: SeCreatePagefilePrivilege	3000	wmic.exe
Token: SeBackupPrivilege	3000	wmic.exe
Token: SeRestorePrivilege	3000	wmic.exe
Token: SeShutdownPrivilege	3000	wmic.exe
Token: SeDebugPrivilege	3000	wmic.exe
Token: SeSystemEnvironmentPrivilege	3000	wmic.exe
Token: SeRemoteShutdownPrivilege	3000	wmic.exe
Token: SeUndockPrivilege	3000	wmic.exe
Token: SeManageVolumePrivilege	3000	wmic.exe
Token: 33	3000	wmic.exe
Token: 34	3000	wmic.exe
Token: 35	3000	wmic.exe
Token: 36	3000	wmic.exe
Token: SeIncreaseQuotaPrivilege	3000	wmic.exe
Token: SeSecurityPrivilege	3000	wmic.exe
Token: SeTakeOwnershipPrivilege	3000	wmic.exe
Token: SeLoadDriverPrivilege	3000	wmic.exe
Token: SeSystemProfilePrivilege	3000	wmic.exe
Token: SeSystemtimePrivilege	3000	wmic.exe
Token: SeProfSingleProcessPrivilege	3000	wmic.exe
Token: SeIncBasePriorityPrivilege	3000	wmic.exe
Token: SeCreatePagefilePrivilege	3000	wmic.exe
Token: SeBackupPrivilege	3000	wmic.exe
Token: SeRestorePrivilege	3000	wmic.exe
Token: SeShutdownPrivilege	3000	wmic.exe
Token: SeDebugPrivilege	3000	wmic.exe
Token: SeSystemEnvironmentPrivilege	3000	wmic.exe
Token: SeRemoteShutdownPrivilege	3000	wmic.exe
Token: SeUndockPrivilege	3000	wmic.exe
Token: SeManageVolumePrivilege	3000	wmic.exe
Token: 33	3000	wmic.exe
Token: 34	3000	wmic.exe
Token: 35	3000	wmic.exe
Token: 36	3000	wmic.exe
Token: SeDebugPrivilege	1076	powershell.exe
Token: SeDebugPrivilege	220	powershell.exe
Token: SeDebugPrivilege	5040	powershell.exe
Token: SeDebugPrivilege	2608	powershell.exe
Token: SeIncreaseQuotaPrivilege	4940	wmic.exe
Token: SeSecurityPrivilege	4940	wmic.exe
Token: SeTakeOwnershipPrivilege	4940	wmic.exe
Token: SeLoadDriverPrivilege	4940	wmic.exe
Token: SeSystemProfilePrivilege	4940	wmic.exe
Token: SeSystemtimePrivilege	4940	wmic.exe
Token: SeProfSingleProcessPrivilege	4940	wmic.exe
Token: SeIncBasePriorityPrivilege	4940	wmic.exe
Token: SeCreatePagefilePrivilege	4940	wmic.exe
Token: SeBackupPrivilege	4940	wmic.exe
Token: SeRestorePrivilege	4940	wmic.exe
Token: SeShutdownPrivilege	4940	wmic.exe
Token: SeDebugPrivilege	4940	wmic.exe
Token: SeSystemEnvironmentPrivilege	4940	wmic.exe
Token: SeRemoteShutdownPrivilege	4940	wmic.exe
Token: SeUndockPrivilege	4940	wmic.exe
Token: SeManageVolumePrivilege	4940	wmic.exe

Suspicious use of WriteProcessMemory 22 IoCs

description	pid	Process	procid_target
PID 4580 wrote to memory of 3000	4580	Delta hack pc.exe	82
PID 4580 wrote to memory of 3000	4580	Delta hack pc.exe	82
PID 4580 wrote to memory of 2884	4580	Delta hack pc.exe	85
PID 4580 wrote to memory of 2884	4580	Delta hack pc.exe	85
PID 4580 wrote to memory of 1076	4580	Delta hack pc.exe	87
PID 4580 wrote to memory of 1076	4580	Delta hack pc.exe	87
PID 4580 wrote to memory of 220	4580	Delta hack pc.exe	89
PID 4580 wrote to memory of 220	4580	Delta hack pc.exe	89
PID 4580 wrote to memory of 5040	4580	Delta hack pc.exe	91
PID 4580 wrote to memory of 5040	4580	Delta hack pc.exe	91
PID 4580 wrote to memory of 2608	4580	Delta hack pc.exe	93
PID 4580 wrote to memory of 2608	4580	Delta hack pc.exe	93
PID 4580 wrote to memory of 4940	4580	Delta hack pc.exe	95
PID 4580 wrote to memory of 4940	4580	Delta hack pc.exe	95
PID 4580 wrote to memory of 316	4580	Delta hack pc.exe	97
PID 4580 wrote to memory of 316	4580	Delta hack pc.exe	97
PID 4580 wrote to memory of 4964	4580	Delta hack pc.exe	99
PID 4580 wrote to memory of 4964	4580	Delta hack pc.exe	99
PID 4580 wrote to memory of 3664	4580	Delta hack pc.exe	101
PID 4580 wrote to memory of 3664	4580	Delta hack pc.exe	101
PID 4580 wrote to memory of 4416	4580	Delta hack pc.exe	103
PID 4580 wrote to memory of 4416	4580	Delta hack pc.exe	103

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
2884	attrib.exe

C:\Users\Admin\AppData\Local\Temp\Delta hack pc.exe
"C:\Users\Admin\AppData\Local\Temp\Delta hack pc.exe"
1⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4580
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:3000
- C:\Windows\SYSTEM32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\Delta hack pc.exe"
  2⤵
  - Views/modifies file attributes
  PID:2884
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\Delta hack pc.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1076
- 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:220
- 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:5040
- 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:2608
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:4940
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:316
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:4964
- 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:3664
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:4416

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

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
d85ba6ff808d9e5444a4b369f5bc2730

SHA1
31aa9d96590fff6981b315e0b391b575e4c0804a

SHA256
84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f

SHA512
8c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249

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

Filesize
944B

MD5
77d622bb1a5b250869a3238b9bc1402b

SHA1
d47f4003c2554b9dfc4c16f22460b331886b191b

SHA256
f97ff12a8abf4bf88bb6497bd2ac2da12628c8847a8ba5a9026bdbb76507cdfb

SHA512
d6789b5499f23c9035375a102271e17a8a82e57d6f5312fa24242e08a83efdeb8becb7622f55c4cf1b89c7d864b445df11f4d994cf7e2f87a900535bcca12fd9

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

Filesize
948B

MD5
17d8127be94d3c1b6fcc9a4ed585003e

SHA1
789874fcc7c778c723f3e89822d8cc8750c6c4c8

SHA256
ea357ad1f95863b3618d31e5b0f90495331f64de2b784d9e185b48668c937a7b

SHA512
bb18b6d07d82227f5cfbe3eb460df79ec892c560ad2964dcd4782aa26336ae15059843bf46a739bdd4a4daa58057f99102531a756a1cf434ce6449b3cd35a98e

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

Filesize
1KB

MD5
276798eeb29a49dc6e199768bc9c2e71

SHA1
5fdc8ccb897ac2df7476fbb07517aca5b7a6205b

SHA256
cd0a1056e8f1b6cb5cb328532239d802f4e2aa8f8fcdc0fcb487684bd68e0dcc

SHA512
0d34fce64bbefc57d64fa6e03ca886952263d5f24df9c1c4cce6a1e8f5a47a9a21e9820f8d38caa7f7b43a52336ce00b738ea18419aaa7c788b72e04ce19e4f2

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

Filesize
1KB

MD5
2c8a0abbe947bc7ce717ba72432ff5ee

SHA1
b47d56a802f56b6b020ea9dea7726f6d03a41816

SHA256
526708b288d09045c390c12a0a4ea945a5166ba6673319cc6f9e6fcaa1c7c86a

SHA512
6390ccc8f4970a780768e8dde957c9b2e5e4bb76b0bc01e1d18f06beef6a293be59a9aed309bd04577af58024aa666f50d5ce62fe0af19473bb32c1623b0efd0

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_3xgrchbn.mxr.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1076-13-0x00007FFBB62B0000-0x00007FFBB6D71000-memory.dmp

Filesize
10.8MB

Download
memory/1076-14-0x000001709B850000-0x000001709B872000-memory.dmp

Filesize
136KB

Download
memory/1076-15-0x00007FFBB62B0000-0x00007FFBB6D71000-memory.dmp

Filesize
10.8MB

Download
memory/1076-18-0x00007FFBB62B0000-0x00007FFBB6D71000-memory.dmp

Filesize
10.8MB

Download
memory/1076-12-0x00007FFBB62B0000-0x00007FFBB6D71000-memory.dmp

Filesize
10.8MB

Download
memory/4580-34-0x000001C6FC6A0000-0x000001C6FC6F0000-memory.dmp

Filesize
320KB

Download
memory/4580-33-0x000001C6FC750000-0x000001C6FC7C6000-memory.dmp

Filesize
472KB

Download
memory/4580-35-0x000001C6FC710000-0x000001C6FC72E000-memory.dmp

Filesize
120KB

Download
memory/4580-1-0x000001C6E1FC0000-0x000001C6E2000000-memory.dmp

Filesize
256KB

Download
memory/4580-0-0x00007FFBB62B3000-0x00007FFBB62B5000-memory.dmp

Filesize
8KB

Download
memory/4580-71-0x000001C6FC680000-0x000001C6FC68A000-memory.dmp

Filesize
40KB

Download
memory/4580-72-0x000001C6FC7D0000-0x000001C6FC7E2000-memory.dmp

Filesize
72KB

Download
memory/4580-2-0x00007FFBB62B0000-0x00007FFBB6D71000-memory.dmp

Filesize
10.8MB

Download
memory/4580-87-0x00007FFBB62B3000-0x00007FFBB62B5000-memory.dmp

Filesize
8KB

Download
memory/4580-88-0x00007FFBB62B0000-0x00007FFBB6D71000-memory.dmp

Filesize
10.8MB

Download