umbral | 91a8f24b813ec8f33e1222a9996cdfe5c4c0dd56cb922a113a87953878b065a9

Analysis

max time kernel
136s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240709-en
resource tags

arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
submitted
30-07-2024 03:49

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General

Target

91a8f24b813ec8f33e1222a9996cdfe5c4c0dd56cb922a113a87953878b065a9.exe
Size

231KB
MD5

4889fe4c6bc9c53e9e53983517727fa8
SHA1

3964bac164a7cdc3a0cddd46f8d3aab5e568b515
SHA256

91a8f24b813ec8f33e1222a9996cdfe5c4c0dd56cb922a113a87953878b065a9
SHA512

f44368d7406db49db31b13f578e968a053e100d49cd2dbf05dabe3a4f3e9412e8fd2ce6ac0c363f34091f5e7af78769ca0cc1b6020f7e8e9a313813a575c7100
SSDEEP

6144:BloZM0rIkd8g+EtXHkv/iD4i/QClL8e1m+cOi:zoZDL+EP8IpHE

Score

10^/10

umbral credential_access execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral2/memory/4932-0-0x0000023DE2E20000-0x0000023DE2E60000-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
3544	powershell.exe
4992	powershell.exe
3920	powershell.exe
2864	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
32	discord.com
33	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
4440	wmic.exe

Suspicious behavior: EnumeratesProcesses 11 IoCs

pid	Process
4932	91a8f24b813ec8f33e1222a9996cdfe5c4c0dd56cb922a113a87953878b065a9.exe
3544	powershell.exe
3544	powershell.exe
4992	powershell.exe
4992	powershell.exe
3920	powershell.exe
3920	powershell.exe
2644	powershell.exe
2644	powershell.exe
2864	powershell.exe
2864	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	4932	91a8f24b813ec8f33e1222a9996cdfe5c4c0dd56cb922a113a87953878b065a9.exe
Token: SeIncreaseQuotaPrivilege	2060	wmic.exe
Token: SeSecurityPrivilege	2060	wmic.exe
Token: SeTakeOwnershipPrivilege	2060	wmic.exe
Token: SeLoadDriverPrivilege	2060	wmic.exe
Token: SeSystemProfilePrivilege	2060	wmic.exe
Token: SeSystemtimePrivilege	2060	wmic.exe
Token: SeProfSingleProcessPrivilege	2060	wmic.exe
Token: SeIncBasePriorityPrivilege	2060	wmic.exe
Token: SeCreatePagefilePrivilege	2060	wmic.exe
Token: SeBackupPrivilege	2060	wmic.exe
Token: SeRestorePrivilege	2060	wmic.exe
Token: SeShutdownPrivilege	2060	wmic.exe
Token: SeDebugPrivilege	2060	wmic.exe
Token: SeSystemEnvironmentPrivilege	2060	wmic.exe
Token: SeRemoteShutdownPrivilege	2060	wmic.exe
Token: SeUndockPrivilege	2060	wmic.exe
Token: SeManageVolumePrivilege	2060	wmic.exe
Token: 33	2060	wmic.exe
Token: 34	2060	wmic.exe
Token: 35	2060	wmic.exe
Token: 36	2060	wmic.exe
Token: SeIncreaseQuotaPrivilege	2060	wmic.exe
Token: SeSecurityPrivilege	2060	wmic.exe
Token: SeTakeOwnershipPrivilege	2060	wmic.exe
Token: SeLoadDriverPrivilege	2060	wmic.exe
Token: SeSystemProfilePrivilege	2060	wmic.exe
Token: SeSystemtimePrivilege	2060	wmic.exe
Token: SeProfSingleProcessPrivilege	2060	wmic.exe
Token: SeIncBasePriorityPrivilege	2060	wmic.exe
Token: SeCreatePagefilePrivilege	2060	wmic.exe
Token: SeBackupPrivilege	2060	wmic.exe
Token: SeRestorePrivilege	2060	wmic.exe
Token: SeShutdownPrivilege	2060	wmic.exe
Token: SeDebugPrivilege	2060	wmic.exe
Token: SeSystemEnvironmentPrivilege	2060	wmic.exe
Token: SeRemoteShutdownPrivilege	2060	wmic.exe
Token: SeUndockPrivilege	2060	wmic.exe
Token: SeManageVolumePrivilege	2060	wmic.exe
Token: 33	2060	wmic.exe
Token: 34	2060	wmic.exe
Token: 35	2060	wmic.exe
Token: 36	2060	wmic.exe
Token: SeDebugPrivilege	3544	powershell.exe
Token: SeDebugPrivilege	4992	powershell.exe
Token: SeDebugPrivilege	3920	powershell.exe
Token: SeDebugPrivilege	2644	powershell.exe
Token: SeIncreaseQuotaPrivilege	1768	wmic.exe
Token: SeSecurityPrivilege	1768	wmic.exe
Token: SeTakeOwnershipPrivilege	1768	wmic.exe
Token: SeLoadDriverPrivilege	1768	wmic.exe
Token: SeSystemProfilePrivilege	1768	wmic.exe
Token: SeSystemtimePrivilege	1768	wmic.exe
Token: SeProfSingleProcessPrivilege	1768	wmic.exe
Token: SeIncBasePriorityPrivilege	1768	wmic.exe
Token: SeCreatePagefilePrivilege	1768	wmic.exe
Token: SeBackupPrivilege	1768	wmic.exe
Token: SeRestorePrivilege	1768	wmic.exe
Token: SeShutdownPrivilege	1768	wmic.exe
Token: SeDebugPrivilege	1768	wmic.exe
Token: SeSystemEnvironmentPrivilege	1768	wmic.exe
Token: SeRemoteShutdownPrivilege	1768	wmic.exe
Token: SeUndockPrivilege	1768	wmic.exe
Token: SeManageVolumePrivilege	1768	wmic.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 4932 wrote to memory of 2060	4932	91a8f24b813ec8f33e1222a9996cdfe5c4c0dd56cb922a113a87953878b065a9.exe	84
PID 4932 wrote to memory of 2060	4932	91a8f24b813ec8f33e1222a9996cdfe5c4c0dd56cb922a113a87953878b065a9.exe	84
PID 4932 wrote to memory of 3544	4932	91a8f24b813ec8f33e1222a9996cdfe5c4c0dd56cb922a113a87953878b065a9.exe	90
PID 4932 wrote to memory of 3544	4932	91a8f24b813ec8f33e1222a9996cdfe5c4c0dd56cb922a113a87953878b065a9.exe	90
PID 4932 wrote to memory of 4992	4932	91a8f24b813ec8f33e1222a9996cdfe5c4c0dd56cb922a113a87953878b065a9.exe	92
PID 4932 wrote to memory of 4992	4932	91a8f24b813ec8f33e1222a9996cdfe5c4c0dd56cb922a113a87953878b065a9.exe	92
PID 4932 wrote to memory of 3920	4932	91a8f24b813ec8f33e1222a9996cdfe5c4c0dd56cb922a113a87953878b065a9.exe	94
PID 4932 wrote to memory of 3920	4932	91a8f24b813ec8f33e1222a9996cdfe5c4c0dd56cb922a113a87953878b065a9.exe	94
PID 4932 wrote to memory of 2644	4932	91a8f24b813ec8f33e1222a9996cdfe5c4c0dd56cb922a113a87953878b065a9.exe	96
PID 4932 wrote to memory of 2644	4932	91a8f24b813ec8f33e1222a9996cdfe5c4c0dd56cb922a113a87953878b065a9.exe	96
PID 4932 wrote to memory of 1768	4932	91a8f24b813ec8f33e1222a9996cdfe5c4c0dd56cb922a113a87953878b065a9.exe	100
PID 4932 wrote to memory of 1768	4932	91a8f24b813ec8f33e1222a9996cdfe5c4c0dd56cb922a113a87953878b065a9.exe	100
PID 4932 wrote to memory of 404	4932	91a8f24b813ec8f33e1222a9996cdfe5c4c0dd56cb922a113a87953878b065a9.exe	102
PID 4932 wrote to memory of 404	4932	91a8f24b813ec8f33e1222a9996cdfe5c4c0dd56cb922a113a87953878b065a9.exe	102
PID 4932 wrote to memory of 4176	4932	91a8f24b813ec8f33e1222a9996cdfe5c4c0dd56cb922a113a87953878b065a9.exe	104
PID 4932 wrote to memory of 4176	4932	91a8f24b813ec8f33e1222a9996cdfe5c4c0dd56cb922a113a87953878b065a9.exe	104
PID 4932 wrote to memory of 2864	4932	91a8f24b813ec8f33e1222a9996cdfe5c4c0dd56cb922a113a87953878b065a9.exe	106
PID 4932 wrote to memory of 2864	4932	91a8f24b813ec8f33e1222a9996cdfe5c4c0dd56cb922a113a87953878b065a9.exe	106
PID 4932 wrote to memory of 4440	4932	91a8f24b813ec8f33e1222a9996cdfe5c4c0dd56cb922a113a87953878b065a9.exe	109
PID 4932 wrote to memory of 4440	4932	91a8f24b813ec8f33e1222a9996cdfe5c4c0dd56cb922a113a87953878b065a9.exe	109

C:\Users\Admin\AppData\Local\Temp\91a8f24b813ec8f33e1222a9996cdfe5c4c0dd56cb922a113a87953878b065a9.exe
"C:\Users\Admin\AppData\Local\Temp\91a8f24b813ec8f33e1222a9996cdfe5c4c0dd56cb922a113a87953878b065a9.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4932
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2060
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\91a8f24b813ec8f33e1222a9996cdfe5c4c0dd56cb922a113a87953878b065a9.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3544
- 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:4992
- 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:3920
- 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:2644
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1768
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:404
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:4176
- 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:2864
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:4440

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

Replay Monitor

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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
d28a889fd956d5cb3accfbaf1143eb6f

SHA1
157ba54b365341f8ff06707d996b3635da8446f7

SHA256
21e5d7ccf80a293e6ba30ed728846ca19c929c52b96e2c8d34e27cd2234f1d45

SHA512
0b6d88deb9be85722e6a78d5886d49f2caf407a59e128d2b4ed74c1356f9928c40048a62731959f2460e9ff9d9feee311043d2a37abe3bb92c2b76a44281478c

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

Filesize
948B

MD5
af283a45e468abc28a9ac1c14af0a45d

SHA1
6d70a604e1a12e0df9b98a4bf57d335d78986c93

SHA256
141a5cbf854b091471384f71c93282c31d166a8676d43559c38086dd6e07229c

SHA512
05abb1f812dd979755e811928006974bccf076e8f618061e64db35b129bb78175a99bac6eefa5e11f6f3c4af94f60e9b7da4c4ba07fa740748ff47a4511d4db8

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
b5e2fd95470c50743ba121fd6bd03a7b

SHA1
75545ed499d9dde51a1fc1cf535eb4f50ec79250

SHA256
d9c961aaf784b9ce81b0a3aac7a39bd41e9f2702d9c28deb20e786d385b88288

SHA512
76bdc793f8b38f603b5ad0957474660bb09e963a2496564b8ceac6591d532fc9498214b81c3908bafc13ff0b07028457c6c997998adfd2203304cb1c82899423

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_jnfa1sru.ufr.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/3544-12-0x00000236A42C0000-0x00000236A42E2000-memory.dmp

Filesize
136KB

Download
memory/3544-17-0x00007FFA76530000-0x00007FFA76FF1000-memory.dmp

Filesize
10.8MB

Download
memory/3544-14-0x00007FFA76530000-0x00007FFA76FF1000-memory.dmp

Filesize
10.8MB

Download
memory/3544-13-0x00007FFA76530000-0x00007FFA76FF1000-memory.dmp

Filesize
10.8MB

Download
memory/4932-31-0x0000023DFD620000-0x0000023DFD696000-memory.dmp

Filesize
472KB

Download
memory/4932-32-0x0000023DFD5A0000-0x0000023DFD5F0000-memory.dmp

Filesize
320KB

Download
memory/4932-33-0x0000023DE4A90000-0x0000023DE4AAE000-memory.dmp

Filesize
120KB

Download
memory/4932-0-0x0000023DE2E20000-0x0000023DE2E60000-memory.dmp

Filesize
256KB

Download
memory/4932-2-0x00007FFA76530000-0x00007FFA76FF1000-memory.dmp

Filesize
10.8MB

Download
memory/4932-69-0x0000023DE4AD0000-0x0000023DE4ADA000-memory.dmp

Filesize
40KB

Download
memory/4932-70-0x0000023DE4B10000-0x0000023DE4B22000-memory.dmp

Filesize
72KB

Download
memory/4932-1-0x00007FFA76533000-0x00007FFA76535000-memory.dmp

Filesize
8KB

Download
memory/4932-88-0x00007FFA76530000-0x00007FFA76FF1000-memory.dmp

Filesize
10.8MB

Download