umbral | c4943ea4fbfe0cb85961446f99020cd60789b1557f73adb5b5f66b25e936ce69

Analysis

max time kernel
104s
max time network
122s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
11-09-2024 23:53

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General

Target

Eval.gg.exe
Size

231KB
MD5

28aa75839a6f5f64e82139f18dd6331b
SHA1

511fd8d498f9c4e333aa7397ed0f8e26ac7ba159
SHA256

c4943ea4fbfe0cb85961446f99020cd60789b1557f73adb5b5f66b25e936ce69
SHA512

2259e8c91ef2e1a5cd56c77ebe9f8fa6a2071671d9c5447a45e1381abb8498745a63b781510cba1d5de258404a601b5a2742bb4cb6cf3cc69a3c5453cb470564
SSDEEP

6144:hloZM+rIkd8g+EtXHkv/iD4tx/GEKtFuxr20VJgBlb8e1m/3i:ToZtL+EP8tx/GEKtFuxr20VJgzYS

Score

10^/10

umbral credential_access discovery execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral2/memory/4148-1-0x000002D1C9590000-0x000002D1C95D0000-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
780	powershell.exe
1120	powershell.exe
2852	powershell.exe
4116	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	Eval.gg.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
21	discord.com
22	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
11	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
4796	cmd.exe
8	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
1332	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
8	PING.EXE

Suspicious behavior: EnumeratesProcesses 11 IoCs

pid	Process
4148	Eval.gg.exe
4116	powershell.exe
4116	powershell.exe
780	powershell.exe
780	powershell.exe
1120	powershell.exe
1120	powershell.exe
3652	powershell.exe
3652	powershell.exe
2852	powershell.exe
2852	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	4148	Eval.gg.exe
Token: SeIncreaseQuotaPrivilege	1596	wmic.exe
Token: SeSecurityPrivilege	1596	wmic.exe
Token: SeTakeOwnershipPrivilege	1596	wmic.exe
Token: SeLoadDriverPrivilege	1596	wmic.exe
Token: SeSystemProfilePrivilege	1596	wmic.exe
Token: SeSystemtimePrivilege	1596	wmic.exe
Token: SeProfSingleProcessPrivilege	1596	wmic.exe
Token: SeIncBasePriorityPrivilege	1596	wmic.exe
Token: SeCreatePagefilePrivilege	1596	wmic.exe
Token: SeBackupPrivilege	1596	wmic.exe
Token: SeRestorePrivilege	1596	wmic.exe
Token: SeShutdownPrivilege	1596	wmic.exe
Token: SeDebugPrivilege	1596	wmic.exe
Token: SeSystemEnvironmentPrivilege	1596	wmic.exe
Token: SeRemoteShutdownPrivilege	1596	wmic.exe
Token: SeUndockPrivilege	1596	wmic.exe
Token: SeManageVolumePrivilege	1596	wmic.exe
Token: 33	1596	wmic.exe
Token: 34	1596	wmic.exe
Token: 35	1596	wmic.exe
Token: 36	1596	wmic.exe
Token: SeIncreaseQuotaPrivilege	1596	wmic.exe
Token: SeSecurityPrivilege	1596	wmic.exe
Token: SeTakeOwnershipPrivilege	1596	wmic.exe
Token: SeLoadDriverPrivilege	1596	wmic.exe
Token: SeSystemProfilePrivilege	1596	wmic.exe
Token: SeSystemtimePrivilege	1596	wmic.exe
Token: SeProfSingleProcessPrivilege	1596	wmic.exe
Token: SeIncBasePriorityPrivilege	1596	wmic.exe
Token: SeCreatePagefilePrivilege	1596	wmic.exe
Token: SeBackupPrivilege	1596	wmic.exe
Token: SeRestorePrivilege	1596	wmic.exe
Token: SeShutdownPrivilege	1596	wmic.exe
Token: SeDebugPrivilege	1596	wmic.exe
Token: SeSystemEnvironmentPrivilege	1596	wmic.exe
Token: SeRemoteShutdownPrivilege	1596	wmic.exe
Token: SeUndockPrivilege	1596	wmic.exe
Token: SeManageVolumePrivilege	1596	wmic.exe
Token: 33	1596	wmic.exe
Token: 34	1596	wmic.exe
Token: 35	1596	wmic.exe
Token: 36	1596	wmic.exe
Token: SeDebugPrivilege	4116	powershell.exe
Token: SeDebugPrivilege	780	powershell.exe
Token: SeDebugPrivilege	1120	powershell.exe
Token: SeDebugPrivilege	3652	powershell.exe
Token: SeIncreaseQuotaPrivilege	4304	wmic.exe
Token: SeSecurityPrivilege	4304	wmic.exe
Token: SeTakeOwnershipPrivilege	4304	wmic.exe
Token: SeLoadDriverPrivilege	4304	wmic.exe
Token: SeSystemProfilePrivilege	4304	wmic.exe
Token: SeSystemtimePrivilege	4304	wmic.exe
Token: SeProfSingleProcessPrivilege	4304	wmic.exe
Token: SeIncBasePriorityPrivilege	4304	wmic.exe
Token: SeCreatePagefilePrivilege	4304	wmic.exe
Token: SeBackupPrivilege	4304	wmic.exe
Token: SeRestorePrivilege	4304	wmic.exe
Token: SeShutdownPrivilege	4304	wmic.exe
Token: SeDebugPrivilege	4304	wmic.exe
Token: SeSystemEnvironmentPrivilege	4304	wmic.exe
Token: SeRemoteShutdownPrivilege	4304	wmic.exe
Token: SeUndockPrivilege	4304	wmic.exe
Token: SeManageVolumePrivilege	4304	wmic.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 4148 wrote to memory of 1596	4148	Eval.gg.exe	86
PID 4148 wrote to memory of 1596	4148	Eval.gg.exe	86
PID 4148 wrote to memory of 3236	4148	Eval.gg.exe	90
PID 4148 wrote to memory of 3236	4148	Eval.gg.exe	90
PID 4148 wrote to memory of 4116	4148	Eval.gg.exe	92
PID 4148 wrote to memory of 4116	4148	Eval.gg.exe	92
PID 4148 wrote to memory of 780	4148	Eval.gg.exe	94
PID 4148 wrote to memory of 780	4148	Eval.gg.exe	94
PID 4148 wrote to memory of 1120	4148	Eval.gg.exe	96
PID 4148 wrote to memory of 1120	4148	Eval.gg.exe	96
PID 4148 wrote to memory of 3652	4148	Eval.gg.exe	98
PID 4148 wrote to memory of 3652	4148	Eval.gg.exe	98
PID 4148 wrote to memory of 4304	4148	Eval.gg.exe	103
PID 4148 wrote to memory of 4304	4148	Eval.gg.exe	103
PID 4148 wrote to memory of 3140	4148	Eval.gg.exe	105
PID 4148 wrote to memory of 3140	4148	Eval.gg.exe	105
PID 4148 wrote to memory of 3112	4148	Eval.gg.exe	107
PID 4148 wrote to memory of 3112	4148	Eval.gg.exe	107
PID 4148 wrote to memory of 2852	4148	Eval.gg.exe	109
PID 4148 wrote to memory of 2852	4148	Eval.gg.exe	109
PID 4148 wrote to memory of 1332	4148	Eval.gg.exe	111
PID 4148 wrote to memory of 1332	4148	Eval.gg.exe	111
PID 4148 wrote to memory of 4796	4148	Eval.gg.exe	114
PID 4148 wrote to memory of 4796	4148	Eval.gg.exe	114
PID 4796 wrote to memory of 8	4796	cmd.exe	116
PID 4796 wrote to memory of 8	4796	cmd.exe	116

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
3236	attrib.exe

C:\Users\Admin\AppData\Local\Temp\Eval.gg.exe
"C:\Users\Admin\AppData\Local\Temp\Eval.gg.exe"
1⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4148
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1596
- C:\Windows\SYSTEM32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\Eval.gg.exe"
  2⤵
  - Views/modifies file attributes
  PID:3236
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\Eval.gg.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4116
- 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:780
- 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:1120
- 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:3652
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:4304
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:3140
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:3112
- 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:2852
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:1332
- C:\Windows\SYSTEM32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\Eval.gg.exe" && pause
  2⤵
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:4796
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:8

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
6d42b6da621e8df5674e26b799c8e2aa

SHA1
ab3ce1327ea1eeedb987ec823d5e0cb146bafa48

SHA256
5ab6a1726f425c6d0158f55eb8d81754ddedd51e651aa0a899a29b7a58619c4c

SHA512
53faffbda8a835bc1143e894c118c15901a5fd09cfc2224dd2f754c06dc794897315049a579b9a8382d4564f071576045aaaf824019b7139d939152dca38ce29

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

Filesize
948B

MD5
6653cc427c257c987c3554f681835b2f

SHA1
b9b60d0433100d6486c71f14524bbece4172eb09

SHA256
da7ba7a2e337cb0a31c726500c66fce12e237a0fe341cd53481dc4a222dcd554

SHA512
bc7a4a22115db55fb9afd433dc41cc0f887e406b31965379436f1d08bdbbc2dd31129296ecc0ceb27c51e213f3b413736a022bd4e602ba65c051a967361870e2

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
c43ff6f1cbbc9c6f55fe8fcf90988c9d

SHA1
8645c645f38803c13fca99c4be7ec22c054382d2

SHA256
be9652b49e5d995e96ab84c5c118ba1699288009cc8d2fde156407382f7f694b

SHA512
37ba3d25f2d342511174e73e3506b6111f069f27374a4ba9a7c360ab720895630c07c598d5a686ebde4f2cd03ad77b2ed0a0a27fd4cd544a6a850935eb8f2242

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_5enkojhz.1th.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/4116-13-0x000001F221630000-0x000001F221652000-memory.dmp

Filesize
136KB

Download
memory/4116-14-0x00007FFE91E50000-0x00007FFE92911000-memory.dmp

Filesize
10.8MB

Download
memory/4116-15-0x00007FFE91E50000-0x00007FFE92911000-memory.dmp

Filesize
10.8MB

Download
memory/4116-18-0x00007FFE91E50000-0x00007FFE92911000-memory.dmp

Filesize
10.8MB

Download
memory/4116-3-0x00007FFE91E50000-0x00007FFE92911000-memory.dmp

Filesize
10.8MB

Download
memory/4148-34-0x000002D1E3D80000-0x000002D1E3DD0000-memory.dmp

Filesize
320KB

Download
memory/4148-33-0x000002D1E3A80000-0x000002D1E3AF6000-memory.dmp

Filesize
472KB

Download
memory/4148-35-0x000002D1CB320000-0x000002D1CB33E000-memory.dmp

Filesize
120KB

Download
memory/4148-1-0x000002D1C9590000-0x000002D1C95D0000-memory.dmp

Filesize
256KB

Download
memory/4148-0-0x00007FFE91E53000-0x00007FFE91E55000-memory.dmp

Filesize
8KB

Download
memory/4148-71-0x000002D1CB360000-0x000002D1CB36A000-memory.dmp

Filesize
40KB

Download
memory/4148-72-0x000002D1CB390000-0x000002D1CB3A2000-memory.dmp

Filesize
72KB

Download
memory/4148-75-0x00007FFE91E53000-0x00007FFE91E55000-memory.dmp

Filesize
8KB

Download
memory/4148-76-0x00007FFE91E50000-0x00007FFE92911000-memory.dmp

Filesize
10.8MB

Download
memory/4148-2-0x00007FFE91E50000-0x00007FFE92911000-memory.dmp

Filesize
10.8MB

Download
memory/4148-92-0x00007FFE91E50000-0x00007FFE92911000-memory.dmp

Filesize
10.8MB

Download