umbral | 750db35c728176edd361bee975326a5b1a270a835be7b272c68175f55d247029

Analysis

max time kernel
96s
max time network
102s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
06-08-2024 02:12

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General

Target

750db35c728176edd361bee975326a5b1a270a835be7b272c68175f55d247029.exe
Size

231KB
MD5

e5fe1871688f8786189ec49cc8124520
SHA1

e2de4a187d3cc99969e888819f6cf2bf5c78e90d
SHA256

750db35c728176edd361bee975326a5b1a270a835be7b272c68175f55d247029
SHA512

095f4398d1af600565bf8e29fc8bf0acbbff1a3729a3b4f531f597342afeed375f248ab5c4b3e589e41fb5305702fbc07b42df9b3320502c9abe3ba4d8a7f30c
SSDEEP

6144:xloZM+rIkd8g+EtXHkv/iD43upiLxCqVsQhTuOLPtb8e1m3Ai:DoZtL+EP83upiLxCqVsQhTuOL1mZ

Score

10^/10

umbral credential_access discovery execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral2/memory/4660-1-0x00000228D81C0000-0x00000228D8200000-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
2008	powershell.exe
716	powershell.exe
4460	powershell.exe
2292	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	750db35c728176edd361bee975326a5b1a270a835be7b272c68175f55d247029.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
20	discord.com
21	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
3	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
4900	cmd.exe
1976	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
4284	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
1976	PING.EXE

Suspicious behavior: EnumeratesProcesses 11 IoCs

pid	Process
4660	750db35c728176edd361bee975326a5b1a270a835be7b272c68175f55d247029.exe
2292	powershell.exe
2292	powershell.exe
2008	powershell.exe
2008	powershell.exe
716	powershell.exe
716	powershell.exe
4412	powershell.exe
4412	powershell.exe
4460	powershell.exe
4460	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	4660	750db35c728176edd361bee975326a5b1a270a835be7b272c68175f55d247029.exe
Token: SeIncreaseQuotaPrivilege	4168	wmic.exe
Token: SeSecurityPrivilege	4168	wmic.exe
Token: SeTakeOwnershipPrivilege	4168	wmic.exe
Token: SeLoadDriverPrivilege	4168	wmic.exe
Token: SeSystemProfilePrivilege	4168	wmic.exe
Token: SeSystemtimePrivilege	4168	wmic.exe
Token: SeProfSingleProcessPrivilege	4168	wmic.exe
Token: SeIncBasePriorityPrivilege	4168	wmic.exe
Token: SeCreatePagefilePrivilege	4168	wmic.exe
Token: SeBackupPrivilege	4168	wmic.exe
Token: SeRestorePrivilege	4168	wmic.exe
Token: SeShutdownPrivilege	4168	wmic.exe
Token: SeDebugPrivilege	4168	wmic.exe
Token: SeSystemEnvironmentPrivilege	4168	wmic.exe
Token: SeRemoteShutdownPrivilege	4168	wmic.exe
Token: SeUndockPrivilege	4168	wmic.exe
Token: SeManageVolumePrivilege	4168	wmic.exe
Token: 33	4168	wmic.exe
Token: 34	4168	wmic.exe
Token: 35	4168	wmic.exe
Token: 36	4168	wmic.exe
Token: SeIncreaseQuotaPrivilege	4168	wmic.exe
Token: SeSecurityPrivilege	4168	wmic.exe
Token: SeTakeOwnershipPrivilege	4168	wmic.exe
Token: SeLoadDriverPrivilege	4168	wmic.exe
Token: SeSystemProfilePrivilege	4168	wmic.exe
Token: SeSystemtimePrivilege	4168	wmic.exe
Token: SeProfSingleProcessPrivilege	4168	wmic.exe
Token: SeIncBasePriorityPrivilege	4168	wmic.exe
Token: SeCreatePagefilePrivilege	4168	wmic.exe
Token: SeBackupPrivilege	4168	wmic.exe
Token: SeRestorePrivilege	4168	wmic.exe
Token: SeShutdownPrivilege	4168	wmic.exe
Token: SeDebugPrivilege	4168	wmic.exe
Token: SeSystemEnvironmentPrivilege	4168	wmic.exe
Token: SeRemoteShutdownPrivilege	4168	wmic.exe
Token: SeUndockPrivilege	4168	wmic.exe
Token: SeManageVolumePrivilege	4168	wmic.exe
Token: 33	4168	wmic.exe
Token: 34	4168	wmic.exe
Token: 35	4168	wmic.exe
Token: 36	4168	wmic.exe
Token: SeDebugPrivilege	2292	powershell.exe
Token: SeDebugPrivilege	2008	powershell.exe
Token: SeDebugPrivilege	716	powershell.exe
Token: SeDebugPrivilege	4412	powershell.exe
Token: SeIncreaseQuotaPrivilege	4220	wmic.exe
Token: SeSecurityPrivilege	4220	wmic.exe
Token: SeTakeOwnershipPrivilege	4220	wmic.exe
Token: SeLoadDriverPrivilege	4220	wmic.exe
Token: SeSystemProfilePrivilege	4220	wmic.exe
Token: SeSystemtimePrivilege	4220	wmic.exe
Token: SeProfSingleProcessPrivilege	4220	wmic.exe
Token: SeIncBasePriorityPrivilege	4220	wmic.exe
Token: SeCreatePagefilePrivilege	4220	wmic.exe
Token: SeBackupPrivilege	4220	wmic.exe
Token: SeRestorePrivilege	4220	wmic.exe
Token: SeShutdownPrivilege	4220	wmic.exe
Token: SeDebugPrivilege	4220	wmic.exe
Token: SeSystemEnvironmentPrivilege	4220	wmic.exe
Token: SeRemoteShutdownPrivilege	4220	wmic.exe
Token: SeUndockPrivilege	4220	wmic.exe
Token: SeManageVolumePrivilege	4220	wmic.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 4660 wrote to memory of 4168	4660	750db35c728176edd361bee975326a5b1a270a835be7b272c68175f55d247029.exe	86
PID 4660 wrote to memory of 4168	4660	750db35c728176edd361bee975326a5b1a270a835be7b272c68175f55d247029.exe	86
PID 4660 wrote to memory of 3208	4660	750db35c728176edd361bee975326a5b1a270a835be7b272c68175f55d247029.exe	89
PID 4660 wrote to memory of 3208	4660	750db35c728176edd361bee975326a5b1a270a835be7b272c68175f55d247029.exe	89
PID 4660 wrote to memory of 2292	4660	750db35c728176edd361bee975326a5b1a270a835be7b272c68175f55d247029.exe	91
PID 4660 wrote to memory of 2292	4660	750db35c728176edd361bee975326a5b1a270a835be7b272c68175f55d247029.exe	91
PID 4660 wrote to memory of 2008	4660	750db35c728176edd361bee975326a5b1a270a835be7b272c68175f55d247029.exe	93
PID 4660 wrote to memory of 2008	4660	750db35c728176edd361bee975326a5b1a270a835be7b272c68175f55d247029.exe	93
PID 4660 wrote to memory of 716	4660	750db35c728176edd361bee975326a5b1a270a835be7b272c68175f55d247029.exe	95
PID 4660 wrote to memory of 716	4660	750db35c728176edd361bee975326a5b1a270a835be7b272c68175f55d247029.exe	95
PID 4660 wrote to memory of 4412	4660	750db35c728176edd361bee975326a5b1a270a835be7b272c68175f55d247029.exe	97
PID 4660 wrote to memory of 4412	4660	750db35c728176edd361bee975326a5b1a270a835be7b272c68175f55d247029.exe	97
PID 4660 wrote to memory of 4220	4660	750db35c728176edd361bee975326a5b1a270a835be7b272c68175f55d247029.exe	99
PID 4660 wrote to memory of 4220	4660	750db35c728176edd361bee975326a5b1a270a835be7b272c68175f55d247029.exe	99
PID 4660 wrote to memory of 4312	4660	750db35c728176edd361bee975326a5b1a270a835be7b272c68175f55d247029.exe	101
PID 4660 wrote to memory of 4312	4660	750db35c728176edd361bee975326a5b1a270a835be7b272c68175f55d247029.exe	101
PID 4660 wrote to memory of 2884	4660	750db35c728176edd361bee975326a5b1a270a835be7b272c68175f55d247029.exe	103
PID 4660 wrote to memory of 2884	4660	750db35c728176edd361bee975326a5b1a270a835be7b272c68175f55d247029.exe	103
PID 4660 wrote to memory of 4460	4660	750db35c728176edd361bee975326a5b1a270a835be7b272c68175f55d247029.exe	105
PID 4660 wrote to memory of 4460	4660	750db35c728176edd361bee975326a5b1a270a835be7b272c68175f55d247029.exe	105
PID 4660 wrote to memory of 4284	4660	750db35c728176edd361bee975326a5b1a270a835be7b272c68175f55d247029.exe	107
PID 4660 wrote to memory of 4284	4660	750db35c728176edd361bee975326a5b1a270a835be7b272c68175f55d247029.exe	107
PID 4660 wrote to memory of 4900	4660	750db35c728176edd361bee975326a5b1a270a835be7b272c68175f55d247029.exe	109
PID 4660 wrote to memory of 4900	4660	750db35c728176edd361bee975326a5b1a270a835be7b272c68175f55d247029.exe	109
PID 4900 wrote to memory of 1976	4900	cmd.exe	111
PID 4900 wrote to memory of 1976	4900	cmd.exe	111

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
3208	attrib.exe

C:\Users\Admin\AppData\Local\Temp\750db35c728176edd361bee975326a5b1a270a835be7b272c68175f55d247029.exe
"C:\Users\Admin\AppData\Local\Temp\750db35c728176edd361bee975326a5b1a270a835be7b272c68175f55d247029.exe"
1⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4660
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:4168
- C:\Windows\SYSTEM32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\750db35c728176edd361bee975326a5b1a270a835be7b272c68175f55d247029.exe"
  2⤵
  - Views/modifies file attributes
  PID:3208
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\750db35c728176edd361bee975326a5b1a270a835be7b272c68175f55d247029.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2292
- 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:2008
- 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:716
- 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:4412
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:4220
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:4312
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:2884
- 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:4460
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:4284
- C:\Windows\SYSTEM32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\750db35c728176edd361bee975326a5b1a270a835be7b272c68175f55d247029.exe" && pause
  2⤵
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:4900
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:1976

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

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
23272afe282560b0a5abad03e415e79b

SHA1
d24997643237343f0db0d9ab70e445450c70c795

SHA256
b3e29a57ee8c2da3dd7df14e6fd34632246e41950f3efd9ce9d35f1797ece1c9

SHA512
bc013bbd6083ef858570cdcdc89f761177f298cc394a0acfc553b2decc61e056459a539037ed67af13c2c4851e20d8df92a1c23d3d0b818a2e585506f28053c4

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_s2su1suw.exa.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/2292-3-0x000001B47FEC0000-0x000001B47FEE2000-memory.dmp

Filesize
136KB

Download
memory/2292-13-0x00007FFECB2B0000-0x00007FFECBD71000-memory.dmp

Filesize
10.8MB

Download
memory/2292-14-0x00007FFECB2B0000-0x00007FFECBD71000-memory.dmp

Filesize
10.8MB

Download
memory/2292-15-0x00007FFECB2B0000-0x00007FFECBD71000-memory.dmp

Filesize
10.8MB

Download
memory/2292-18-0x00007FFECB2B0000-0x00007FFECBD71000-memory.dmp

Filesize
10.8MB

Download
memory/4660-34-0x00000228F2870000-0x00000228F28C0000-memory.dmp

Filesize
320KB

Download
memory/4660-33-0x00000228F29D0000-0x00000228F2A46000-memory.dmp

Filesize
472KB

Download
memory/4660-35-0x00000228D9E30000-0x00000228D9E4E000-memory.dmp

Filesize
120KB

Download
memory/4660-1-0x00000228D81C0000-0x00000228D8200000-memory.dmp

Filesize
256KB

Download
memory/4660-0-0x00007FFECB2B3000-0x00007FFECB2B5000-memory.dmp

Filesize
8KB

Download
memory/4660-72-0x00000228D9EB0000-0x00000228D9EC2000-memory.dmp

Filesize
72KB

Download
memory/4660-71-0x00000228D9E70000-0x00000228D9E7A000-memory.dmp

Filesize
40KB

Download
memory/4660-2-0x00007FFECB2B0000-0x00007FFECBD71000-memory.dmp

Filesize
10.8MB

Download
memory/4660-90-0x00007FFECB2B0000-0x00007FFECBD71000-memory.dmp

Filesize
10.8MB

Download