umbral | e9f53a85ccc391f38f8e61a652f9bc828ba30c5716cbb20a279997f47332739b

Analysis

max time kernel
32s
max time network
43s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
20-08-2024 03:42

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General

Target

rawr.exe
Size

227KB
MD5

a91205f6727f1c3b2f6383b90a364ed2
SHA1

f8ee36a1cffba6d008f3db793d73c661e798ab3b
SHA256

e9f53a85ccc391f38f8e61a652f9bc828ba30c5716cbb20a279997f47332739b
SHA512

feac77579bf151f91ec897a684929ad8b5897a575a45081b27d583c027343f96590a20ceae0662d11cb8ac2df36041ed2a7f9422662cfdcf4cf555649464c36c
SSDEEP

6144:eloZM+rIkd8g+EtXHkv/iD4x6ek8il92hDe8NhoNl+lj8e1m1i:IoZtL+EP8kek8il92hDe8Nhoapx

Score

10^/10

umbral credential_access discovery execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral2/memory/4840-1-0x0000028ED6450000-0x0000028ED6490000-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
3400	powershell.exe
4912	powershell.exe
4204	powershell.exe
4772	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	rawr.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
26	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
8	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
4008	cmd.exe
1464	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
4064	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
1464	PING.EXE

Suspicious behavior: EnumeratesProcesses 11 IoCs

pid	Process
4840	rawr.exe
3400	powershell.exe
3400	powershell.exe
4772	powershell.exe
4772	powershell.exe
4912	powershell.exe
4912	powershell.exe
3752	powershell.exe
3752	powershell.exe
4204	powershell.exe
4204	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	4840	rawr.exe
Token: SeIncreaseQuotaPrivilege	60	wmic.exe
Token: SeSecurityPrivilege	60	wmic.exe
Token: SeTakeOwnershipPrivilege	60	wmic.exe
Token: SeLoadDriverPrivilege	60	wmic.exe
Token: SeSystemProfilePrivilege	60	wmic.exe
Token: SeSystemtimePrivilege	60	wmic.exe
Token: SeProfSingleProcessPrivilege	60	wmic.exe
Token: SeIncBasePriorityPrivilege	60	wmic.exe
Token: SeCreatePagefilePrivilege	60	wmic.exe
Token: SeBackupPrivilege	60	wmic.exe
Token: SeRestorePrivilege	60	wmic.exe
Token: SeShutdownPrivilege	60	wmic.exe
Token: SeDebugPrivilege	60	wmic.exe
Token: SeSystemEnvironmentPrivilege	60	wmic.exe
Token: SeRemoteShutdownPrivilege	60	wmic.exe
Token: SeUndockPrivilege	60	wmic.exe
Token: SeManageVolumePrivilege	60	wmic.exe
Token: 33	60	wmic.exe
Token: 34	60	wmic.exe
Token: 35	60	wmic.exe
Token: 36	60	wmic.exe
Token: SeIncreaseQuotaPrivilege	60	wmic.exe
Token: SeSecurityPrivilege	60	wmic.exe
Token: SeTakeOwnershipPrivilege	60	wmic.exe
Token: SeLoadDriverPrivilege	60	wmic.exe
Token: SeSystemProfilePrivilege	60	wmic.exe
Token: SeSystemtimePrivilege	60	wmic.exe
Token: SeProfSingleProcessPrivilege	60	wmic.exe
Token: SeIncBasePriorityPrivilege	60	wmic.exe
Token: SeCreatePagefilePrivilege	60	wmic.exe
Token: SeBackupPrivilege	60	wmic.exe
Token: SeRestorePrivilege	60	wmic.exe
Token: SeShutdownPrivilege	60	wmic.exe
Token: SeDebugPrivilege	60	wmic.exe
Token: SeSystemEnvironmentPrivilege	60	wmic.exe
Token: SeRemoteShutdownPrivilege	60	wmic.exe
Token: SeUndockPrivilege	60	wmic.exe
Token: SeManageVolumePrivilege	60	wmic.exe
Token: 33	60	wmic.exe
Token: 34	60	wmic.exe
Token: 35	60	wmic.exe
Token: 36	60	wmic.exe
Token: SeDebugPrivilege	3400	powershell.exe
Token: SeDebugPrivilege	4772	powershell.exe
Token: SeDebugPrivilege	4912	powershell.exe
Token: SeDebugPrivilege	3752	powershell.exe
Token: SeIncreaseQuotaPrivilege	1540	wmic.exe
Token: SeSecurityPrivilege	1540	wmic.exe
Token: SeTakeOwnershipPrivilege	1540	wmic.exe
Token: SeLoadDriverPrivilege	1540	wmic.exe
Token: SeSystemProfilePrivilege	1540	wmic.exe
Token: SeSystemtimePrivilege	1540	wmic.exe
Token: SeProfSingleProcessPrivilege	1540	wmic.exe
Token: SeIncBasePriorityPrivilege	1540	wmic.exe
Token: SeCreatePagefilePrivilege	1540	wmic.exe
Token: SeBackupPrivilege	1540	wmic.exe
Token: SeRestorePrivilege	1540	wmic.exe
Token: SeShutdownPrivilege	1540	wmic.exe
Token: SeDebugPrivilege	1540	wmic.exe
Token: SeSystemEnvironmentPrivilege	1540	wmic.exe
Token: SeRemoteShutdownPrivilege	1540	wmic.exe
Token: SeUndockPrivilege	1540	wmic.exe
Token: SeManageVolumePrivilege	1540	wmic.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 4840 wrote to memory of 60	4840	rawr.exe	85
PID 4840 wrote to memory of 60	4840	rawr.exe	85
PID 4840 wrote to memory of 4276	4840	rawr.exe	88
PID 4840 wrote to memory of 4276	4840	rawr.exe	88
PID 4840 wrote to memory of 3400	4840	rawr.exe	90
PID 4840 wrote to memory of 3400	4840	rawr.exe	90
PID 4840 wrote to memory of 4772	4840	rawr.exe	94
PID 4840 wrote to memory of 4772	4840	rawr.exe	94
PID 4840 wrote to memory of 4912	4840	rawr.exe	96
PID 4840 wrote to memory of 4912	4840	rawr.exe	96
PID 4840 wrote to memory of 3752	4840	rawr.exe	98
PID 4840 wrote to memory of 3752	4840	rawr.exe	98
PID 4840 wrote to memory of 1540	4840	rawr.exe	102
PID 4840 wrote to memory of 1540	4840	rawr.exe	102
PID 4840 wrote to memory of 2488	4840	rawr.exe	104
PID 4840 wrote to memory of 2488	4840	rawr.exe	104
PID 4840 wrote to memory of 464	4840	rawr.exe	106
PID 4840 wrote to memory of 464	4840	rawr.exe	106
PID 4840 wrote to memory of 4204	4840	rawr.exe	108
PID 4840 wrote to memory of 4204	4840	rawr.exe	108
PID 4840 wrote to memory of 4064	4840	rawr.exe	111
PID 4840 wrote to memory of 4064	4840	rawr.exe	111
PID 4840 wrote to memory of 4008	4840	rawr.exe	113
PID 4840 wrote to memory of 4008	4840	rawr.exe	113
PID 4008 wrote to memory of 1464	4008	cmd.exe	115
PID 4008 wrote to memory of 1464	4008	cmd.exe	115

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
4276	attrib.exe

C:\Users\Admin\AppData\Local\Temp\rawr.exe
"C:\Users\Admin\AppData\Local\Temp\rawr.exe"
1⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4840
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:60
- C:\Windows\SYSTEM32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\rawr.exe"
  2⤵
  - Views/modifies file attributes
  PID:4276
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\rawr.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3400
- 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:4772
- 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:4912
- 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:3752
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1540
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:2488
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:464
- 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:4204
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:4064
- C:\Windows\SYSTEM32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\rawr.exe" && pause
  2⤵
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:4008
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:1464

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
c9b6705519e1eef08f86c4ba5f4286f3

SHA1
6c6b179e452ecee2673a1d4fe128f1c06f70577f

SHA256
0f9cad44a79126871580e19b01dc3f880c5173b1faaf8b9018d5d1f829714705

SHA512
6d8f85a7a8b0b124530f36a157cd0441b5c1eacdc35e274af9fbf0569d03d1d5e468651a5b2425f0215c282ecfa7b1ffeaeeaf18612822f00bd14306d30640c7

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
7511c81925750deb7ad1b9b80eea8a8d

SHA1
6ea759b3cbd243ae11435c6d6c5ced185eb01f49

SHA256
5b49723a7773f2fe1f6093236e7b9b2c546f0873635d02346cb39535811234fa

SHA512
5f7e69316d39525d137a7a833f8c746ceef8f1b2295348393fb3244cca8b962fbaad0f7da49da453fe97e2c49b1f41f06138111ac5ff97fdc33c300350ec3a1b

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_ccsiidsr.dyx.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/3400-3-0x00007FFAC1FD0000-0x00007FFAC21C5000-memory.dmp

Filesize
2.0MB

Download
memory/3400-5-0x00007FFAC1FD0000-0x00007FFAC21C5000-memory.dmp

Filesize
2.0MB

Download
memory/3400-15-0x0000026B4FD20000-0x0000026B4FD42000-memory.dmp

Filesize
136KB

Download
memory/3400-18-0x00007FFAC1FD0000-0x00007FFAC21C5000-memory.dmp

Filesize
2.0MB

Download
memory/3400-4-0x00007FFAC1FD0000-0x00007FFAC21C5000-memory.dmp

Filesize
2.0MB

Download
memory/4840-34-0x0000028EF0C80000-0x0000028EF0CD0000-memory.dmp

Filesize
320KB

Download
memory/4840-33-0x0000028EF0C00000-0x0000028EF0C76000-memory.dmp

Filesize
472KB

Download
memory/4840-35-0x0000028EF0BD0000-0x0000028EF0BEE000-memory.dmp

Filesize
120KB

Download
memory/4840-0-0x00007FFAC1FD0000-0x00007FFAC21C5000-memory.dmp

Filesize
2.0MB

Download
memory/4840-1-0x0000028ED6450000-0x0000028ED6490000-memory.dmp

Filesize
256KB

Download
memory/4840-72-0x0000028EF0B80000-0x0000028EF0B92000-memory.dmp

Filesize
72KB

Download
memory/4840-71-0x0000028ED6940000-0x0000028ED694A000-memory.dmp

Filesize
40KB

Download
memory/4840-2-0x00007FFAC1FD0000-0x00007FFAC21C5000-memory.dmp

Filesize
2.0MB

Download
memory/4840-90-0x00007FFAC1FD0000-0x00007FFAC21C5000-memory.dmp

Filesize
2.0MB

Download