umbral | bf1ddaef01c54156875f83d24de19811476ad618bf126460a764c0cb13bcf3b7

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
22-08-2024 21:25

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General

Target

ExtremeInjectorV3.exe
Size

228KB
MD5

92fe53ca6c8f1a424db45bb3f7cdfe56
SHA1

a6d4e261875b162f18f2cbbcc6411cec7b59be37
SHA256

bf1ddaef01c54156875f83d24de19811476ad618bf126460a764c0cb13bcf3b7
SHA512

c4ce50e070a07626fd766212428b15df7d4f4fe680acdc9b0ba084156aea4e4443dd76ddba8ff9d9551a5c00b53d784a716caa95df1a78d80a65dd1bca2c4a16
SSDEEP

6144:OloZM+rIkd8g+EtXHkv/iD4QL6XYe5xy4XKYZd8PRb8e1mLpsi:YoZtL+EP8QL6XYe5xy4XKYZd8hil

Score

10^/10

umbral credential_access discovery execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral2/memory/2000-1-0x000001D8FA2F0000-0x000001D8FA330000-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
3408	powershell.exe
3208	powershell.exe
1348	powershell.exe
2368	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	ExtremeInjectorV3.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
31	discord.com
32	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
6	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
4388	cmd.exe
2404	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
2216	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2404	PING.EXE

Suspicious behavior: EnumeratesProcesses 11 IoCs

pid	Process
2000	ExtremeInjectorV3.exe
2368	powershell.exe
2368	powershell.exe
3208	powershell.exe
3208	powershell.exe
1348	powershell.exe
1348	powershell.exe
2412	powershell.exe
2412	powershell.exe
3408	powershell.exe
3408	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2000	ExtremeInjectorV3.exe
Token: SeIncreaseQuotaPrivilege	3964	wmic.exe
Token: SeSecurityPrivilege	3964	wmic.exe
Token: SeTakeOwnershipPrivilege	3964	wmic.exe
Token: SeLoadDriverPrivilege	3964	wmic.exe
Token: SeSystemProfilePrivilege	3964	wmic.exe
Token: SeSystemtimePrivilege	3964	wmic.exe
Token: SeProfSingleProcessPrivilege	3964	wmic.exe
Token: SeIncBasePriorityPrivilege	3964	wmic.exe
Token: SeCreatePagefilePrivilege	3964	wmic.exe
Token: SeBackupPrivilege	3964	wmic.exe
Token: SeRestorePrivilege	3964	wmic.exe
Token: SeShutdownPrivilege	3964	wmic.exe
Token: SeDebugPrivilege	3964	wmic.exe
Token: SeSystemEnvironmentPrivilege	3964	wmic.exe
Token: SeRemoteShutdownPrivilege	3964	wmic.exe
Token: SeUndockPrivilege	3964	wmic.exe
Token: SeManageVolumePrivilege	3964	wmic.exe
Token: 33	3964	wmic.exe
Token: 34	3964	wmic.exe
Token: 35	3964	wmic.exe
Token: 36	3964	wmic.exe
Token: SeIncreaseQuotaPrivilege	3964	wmic.exe
Token: SeSecurityPrivilege	3964	wmic.exe
Token: SeTakeOwnershipPrivilege	3964	wmic.exe
Token: SeLoadDriverPrivilege	3964	wmic.exe
Token: SeSystemProfilePrivilege	3964	wmic.exe
Token: SeSystemtimePrivilege	3964	wmic.exe
Token: SeProfSingleProcessPrivilege	3964	wmic.exe
Token: SeIncBasePriorityPrivilege	3964	wmic.exe
Token: SeCreatePagefilePrivilege	3964	wmic.exe
Token: SeBackupPrivilege	3964	wmic.exe
Token: SeRestorePrivilege	3964	wmic.exe
Token: SeShutdownPrivilege	3964	wmic.exe
Token: SeDebugPrivilege	3964	wmic.exe
Token: SeSystemEnvironmentPrivilege	3964	wmic.exe
Token: SeRemoteShutdownPrivilege	3964	wmic.exe
Token: SeUndockPrivilege	3964	wmic.exe
Token: SeManageVolumePrivilege	3964	wmic.exe
Token: 33	3964	wmic.exe
Token: 34	3964	wmic.exe
Token: 35	3964	wmic.exe
Token: 36	3964	wmic.exe
Token: SeDebugPrivilege	2368	powershell.exe
Token: SeDebugPrivilege	3208	powershell.exe
Token: SeDebugPrivilege	1348	powershell.exe
Token: SeDebugPrivilege	2412	powershell.exe
Token: SeIncreaseQuotaPrivilege	4932	wmic.exe
Token: SeSecurityPrivilege	4932	wmic.exe
Token: SeTakeOwnershipPrivilege	4932	wmic.exe
Token: SeLoadDriverPrivilege	4932	wmic.exe
Token: SeSystemProfilePrivilege	4932	wmic.exe
Token: SeSystemtimePrivilege	4932	wmic.exe
Token: SeProfSingleProcessPrivilege	4932	wmic.exe
Token: SeIncBasePriorityPrivilege	4932	wmic.exe
Token: SeCreatePagefilePrivilege	4932	wmic.exe
Token: SeBackupPrivilege	4932	wmic.exe
Token: SeRestorePrivilege	4932	wmic.exe
Token: SeShutdownPrivilege	4932	wmic.exe
Token: SeDebugPrivilege	4932	wmic.exe
Token: SeSystemEnvironmentPrivilege	4932	wmic.exe
Token: SeRemoteShutdownPrivilege	4932	wmic.exe
Token: SeUndockPrivilege	4932	wmic.exe
Token: SeManageVolumePrivilege	4932	wmic.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 2000 wrote to memory of 3964	2000	ExtremeInjectorV3.exe	87
PID 2000 wrote to memory of 3964	2000	ExtremeInjectorV3.exe	87
PID 2000 wrote to memory of 4960	2000	ExtremeInjectorV3.exe	90
PID 2000 wrote to memory of 4960	2000	ExtremeInjectorV3.exe	90
PID 2000 wrote to memory of 2368	2000	ExtremeInjectorV3.exe	92
PID 2000 wrote to memory of 2368	2000	ExtremeInjectorV3.exe	92
PID 2000 wrote to memory of 3208	2000	ExtremeInjectorV3.exe	95
PID 2000 wrote to memory of 3208	2000	ExtremeInjectorV3.exe	95
PID 2000 wrote to memory of 1348	2000	ExtremeInjectorV3.exe	97
PID 2000 wrote to memory of 1348	2000	ExtremeInjectorV3.exe	97
PID 2000 wrote to memory of 2412	2000	ExtremeInjectorV3.exe	99
PID 2000 wrote to memory of 2412	2000	ExtremeInjectorV3.exe	99
PID 2000 wrote to memory of 4932	2000	ExtremeInjectorV3.exe	103
PID 2000 wrote to memory of 4932	2000	ExtremeInjectorV3.exe	103
PID 2000 wrote to memory of 3932	2000	ExtremeInjectorV3.exe	105
PID 2000 wrote to memory of 3932	2000	ExtremeInjectorV3.exe	105
PID 2000 wrote to memory of 1440	2000	ExtremeInjectorV3.exe	107
PID 2000 wrote to memory of 1440	2000	ExtremeInjectorV3.exe	107
PID 2000 wrote to memory of 3408	2000	ExtremeInjectorV3.exe	109
PID 2000 wrote to memory of 3408	2000	ExtremeInjectorV3.exe	109
PID 2000 wrote to memory of 2216	2000	ExtremeInjectorV3.exe	112
PID 2000 wrote to memory of 2216	2000	ExtremeInjectorV3.exe	112
PID 2000 wrote to memory of 4388	2000	ExtremeInjectorV3.exe	114
PID 2000 wrote to memory of 4388	2000	ExtremeInjectorV3.exe	114
PID 4388 wrote to memory of 2404	4388	cmd.exe	116
PID 4388 wrote to memory of 2404	4388	cmd.exe	116

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
4960	attrib.exe

C:\Users\Admin\AppData\Local\Temp\ExtremeInjectorV3.exe
"C:\Users\Admin\AppData\Local\Temp\ExtremeInjectorV3.exe"
1⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2000
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:3964
- C:\Windows\SYSTEM32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\ExtremeInjectorV3.exe"
  2⤵
  - Views/modifies file attributes
  PID:4960
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\ExtremeInjectorV3.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2368
- 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:3208
- 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:1348
- 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:2412
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:4932
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:3932
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:1440
- 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:3408
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:2216
- C:\Windows\SYSTEM32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\ExtremeInjectorV3.exe" && pause
  2⤵
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:4388
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:2404

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
2af06a6b36db9473e4a7d9c7ab72b70b

SHA1
8ef34b9b961e51bdd1b8d7d9db2ec1b0a4764645

SHA256
18a2aa7e245c6732f95fb7749b2b4d29007f2c56a9c5bfbc5e3c127bdfe5f158

SHA512
3495567a5d5af94ae27be51313d9e2630c52017d808042fe0d56baa34fa1d246eb15c253d14c77c77a1d8f2f1c81680e623044ae95415b095696e7fa141ac7cf

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

Filesize
1KB

MD5
88be3bc8a7f90e3953298c0fdbec4d72

SHA1
f4969784ad421cc80ef45608727aacd0f6bf2e4b

SHA256
533c8470b41084e40c5660569ebbdb7496520d449629a235e8053e84025f348a

SHA512
4fce64e2dacddbc03314048fef1ce356ee2647c14733da121c23c65507eeb8d721d6b690ad5463319b364dc4fa95904ad6ab096907f32918e3406ef438a6ef7c

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

Filesize
1KB

MD5
9ee3b3ae43a8d58fbfbe2a285ba467bd

SHA1
8676ba09c7244f0e88b7005c4c91ff49f50d40e0

SHA256
89ea25143d576a5f682bafcd6df39a7f29bdce60100093742dcaeb0506f61a42

SHA512
9e38e98bcbd158e239a0ecd8e8cd4d2cf7620f890d6910c71da4a98fa146a78849ecaf10179b53d037bcfdd801bab49b184446642c02fa7c30c5bd34458679aa

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_ecb1fwgl.od0.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/2000-70-0x000001D8FC740000-0x000001D8FC74A000-memory.dmp

Filesize
40KB

Download
memory/2000-71-0x000001D8FCA10000-0x000001D8FCA22000-memory.dmp

Filesize
72KB

Download
memory/2000-90-0x00007FFC0A250000-0x00007FFC0AD11000-memory.dmp

Filesize
10.8MB

Download
memory/2000-89-0x000001D8FCC20000-0x000001D8FCDC9000-memory.dmp

Filesize
1.7MB

Download
memory/2000-32-0x000001D8FCA70000-0x000001D8FCAE6000-memory.dmp

Filesize
472KB

Download
memory/2000-33-0x000001D8FCAF0000-0x000001D8FCB40000-memory.dmp

Filesize
320KB

Download
memory/2000-34-0x000001D8FC710000-0x000001D8FC72E000-memory.dmp

Filesize
120KB

Download
memory/2000-1-0x000001D8FA2F0000-0x000001D8FA330000-memory.dmp

Filesize
256KB

Download
memory/2000-2-0x00007FFC0A250000-0x00007FFC0AD11000-memory.dmp

Filesize
10.8MB

Download
memory/2000-0-0x00007FFC0A253000-0x00007FFC0A255000-memory.dmp

Filesize
8KB

Download
memory/2368-17-0x00007FFC0A250000-0x00007FFC0AD11000-memory.dmp

Filesize
10.8MB

Download
memory/2368-3-0x00007FFC0A250000-0x00007FFC0AD11000-memory.dmp

Filesize
10.8MB

Download
memory/2368-4-0x00007FFC0A250000-0x00007FFC0AD11000-memory.dmp

Filesize
10.8MB

Download
memory/2368-10-0x0000016DAEB70000-0x0000016DAEB92000-memory.dmp

Filesize
136KB

Download