umbral | 2e43e4a91eb9abad534cf69f3275f8cba580e2ebd070b439e49d4019998f9548

Analysis

max time kernel
91s
max time network
96s
platform
windows10-2004_x64
resource
win10v2004-20230703-en
resource tags

arch:x64arch:x86image:win10v2004-20230703-enlocale:en-usos:windows10-2004-x64system
submitted
14-08-2023 04:40

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General

Target

Hentai.exe
Size

259KB
MD5

e58228a41eb53fd35fed0c1facdbe3a0
SHA1

27647d6d6926fd370c1158e940a5f101bf88e186
SHA256

2e43e4a91eb9abad534cf69f3275f8cba580e2ebd070b439e49d4019998f9548
SHA512

f13dd0c04045cdff35da4c71998d04854fbde679aecffa3a264a1308edbf5591f9d0d9434480b7909f39d1093344fdf84dfdcaac4d24b22fcee774e434df0645
SSDEEP

6144:+loZM9rIkd8g+EtXHkv/iD4BpsY2U7X8ktoGnnGrqb8e1m+iKwM:ooZOL+EP8BpsY2U7X8ktoGnnGCIKw

Score

10^/10

umbral spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/4772-133-0x00000199C4C90000-0x00000199C4CD8000-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	Hentai.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

Web Service
T1102

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
19	ip-api.com

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
1480	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2532	PING.EXE

Suspicious behavior: EnumeratesProcesses 10 IoCs

pid	Process
4404	powershell.exe
4404	powershell.exe
1272	powershell.exe
1272	powershell.exe
4476	powershell.exe
4476	powershell.exe
1424	powershell.exe
1424	powershell.exe
532	powershell.exe
532	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	4772	Hentai.exe
Token: SeDebugPrivilege	4404	powershell.exe
Token: SeDebugPrivilege	1272	powershell.exe
Token: SeDebugPrivilege	4476	powershell.exe
Token: SeDebugPrivilege	1424	powershell.exe
Token: SeIncreaseQuotaPrivilege	4116	wmic.exe
Token: SeSecurityPrivilege	4116	wmic.exe
Token: SeTakeOwnershipPrivilege	4116	wmic.exe
Token: SeLoadDriverPrivilege	4116	wmic.exe
Token: SeSystemProfilePrivilege	4116	wmic.exe
Token: SeSystemtimePrivilege	4116	wmic.exe
Token: SeProfSingleProcessPrivilege	4116	wmic.exe
Token: SeIncBasePriorityPrivilege	4116	wmic.exe
Token: SeCreatePagefilePrivilege	4116	wmic.exe
Token: SeBackupPrivilege	4116	wmic.exe
Token: SeRestorePrivilege	4116	wmic.exe
Token: SeShutdownPrivilege	4116	wmic.exe
Token: SeDebugPrivilege	4116	wmic.exe
Token: SeSystemEnvironmentPrivilege	4116	wmic.exe
Token: SeRemoteShutdownPrivilege	4116	wmic.exe
Token: SeUndockPrivilege	4116	wmic.exe
Token: SeManageVolumePrivilege	4116	wmic.exe
Token: 33	4116	wmic.exe
Token: 34	4116	wmic.exe
Token: 35	4116	wmic.exe
Token: 36	4116	wmic.exe
Token: SeIncreaseQuotaPrivilege	4116	wmic.exe
Token: SeSecurityPrivilege	4116	wmic.exe
Token: SeTakeOwnershipPrivilege	4116	wmic.exe
Token: SeLoadDriverPrivilege	4116	wmic.exe
Token: SeSystemProfilePrivilege	4116	wmic.exe
Token: SeSystemtimePrivilege	4116	wmic.exe
Token: SeProfSingleProcessPrivilege	4116	wmic.exe
Token: SeIncBasePriorityPrivilege	4116	wmic.exe
Token: SeCreatePagefilePrivilege	4116	wmic.exe
Token: SeBackupPrivilege	4116	wmic.exe
Token: SeRestorePrivilege	4116	wmic.exe
Token: SeShutdownPrivilege	4116	wmic.exe
Token: SeDebugPrivilege	4116	wmic.exe
Token: SeSystemEnvironmentPrivilege	4116	wmic.exe
Token: SeRemoteShutdownPrivilege	4116	wmic.exe
Token: SeUndockPrivilege	4116	wmic.exe
Token: SeManageVolumePrivilege	4116	wmic.exe
Token: 33	4116	wmic.exe
Token: 34	4116	wmic.exe
Token: 35	4116	wmic.exe
Token: 36	4116	wmic.exe
Token: SeIncreaseQuotaPrivilege	1512	wmic.exe
Token: SeSecurityPrivilege	1512	wmic.exe
Token: SeTakeOwnershipPrivilege	1512	wmic.exe
Token: SeLoadDriverPrivilege	1512	wmic.exe
Token: SeSystemProfilePrivilege	1512	wmic.exe
Token: SeSystemtimePrivilege	1512	wmic.exe
Token: SeProfSingleProcessPrivilege	1512	wmic.exe
Token: SeIncBasePriorityPrivilege	1512	wmic.exe
Token: SeCreatePagefilePrivilege	1512	wmic.exe
Token: SeBackupPrivilege	1512	wmic.exe
Token: SeRestorePrivilege	1512	wmic.exe
Token: SeShutdownPrivilege	1512	wmic.exe
Token: SeDebugPrivilege	1512	wmic.exe
Token: SeSystemEnvironmentPrivilege	1512	wmic.exe
Token: SeRemoteShutdownPrivilege	1512	wmic.exe
Token: SeUndockPrivilege	1512	wmic.exe
Token: SeManageVolumePrivilege	1512	wmic.exe

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 4772 wrote to memory of 2692	4772	Hentai.exe	82
PID 4772 wrote to memory of 2692	4772	Hentai.exe	82
PID 4772 wrote to memory of 4404	4772	Hentai.exe	84
PID 4772 wrote to memory of 4404	4772	Hentai.exe	84
PID 4772 wrote to memory of 1272	4772	Hentai.exe	87
PID 4772 wrote to memory of 1272	4772	Hentai.exe	87
PID 4772 wrote to memory of 4476	4772	Hentai.exe	89
PID 4772 wrote to memory of 4476	4772	Hentai.exe	89
PID 4772 wrote to memory of 1424	4772	Hentai.exe	91
PID 4772 wrote to memory of 1424	4772	Hentai.exe	91
PID 4772 wrote to memory of 4116	4772	Hentai.exe	97
PID 4772 wrote to memory of 4116	4772	Hentai.exe	97
PID 4772 wrote to memory of 1512	4772	Hentai.exe	99
PID 4772 wrote to memory of 1512	4772	Hentai.exe	99
PID 4772 wrote to memory of 3024	4772	Hentai.exe	101
PID 4772 wrote to memory of 3024	4772	Hentai.exe	101
PID 4772 wrote to memory of 532	4772	Hentai.exe	104
PID 4772 wrote to memory of 532	4772	Hentai.exe	104
PID 4772 wrote to memory of 1480	4772	Hentai.exe	107
PID 4772 wrote to memory of 1480	4772	Hentai.exe	107
PID 4772 wrote to memory of 3080	4772	Hentai.exe	111
PID 4772 wrote to memory of 3080	4772	Hentai.exe	111
PID 3080 wrote to memory of 2532	3080	cmd.exe	113
PID 3080 wrote to memory of 2532	3080	cmd.exe	113

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
2692	attrib.exe

C:\Users\Admin\AppData\Local\Temp\Hentai.exe
"C:\Users\Admin\AppData\Local\Temp\Hentai.exe"
1⤵
- Drops file in Drivers directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4772
- C:\Windows\SYSTEM32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\Hentai.exe"
  2⤵
  - Views/modifies file attributes
  PID:2692
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\Hentai.exe'
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4404
- 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:1272
- 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:4476
- 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:1424
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:4116
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1512
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:3024
- 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:532
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:1480
- C:\Windows\SYSTEM32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\Hentai.exe" && pause
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3080
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - Runs ping.exe
    PID:2532

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

Replay Monitor

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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
cadef9abd087803c630df65264a6c81c

SHA1
babbf3636c347c8727c35f3eef2ee643dbcc4bd2

SHA256
cce65b73cdfe9304bcd5207913e8b60fb69faa20cd3b684f2b0343b755b99438

SHA512
7278aa87124abb382d9024a645e881e7b7cf1b84e8894943b36e018dbf0399e6858392f77980b599fa5488e2e21bf757a0702fe6419417edac93b68e0c2ec085

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
e0ec6bf376a6b15852bce768196c5ed0

SHA1
05fe4e592ebbb7e29f36b8d30a6a90ba29bd4f81

SHA256
2d4a39cbbd597a7cfff477817c3c7c541c14974c8d234b4c0de6d229e3a3ce97

SHA512
dc0c7d3d127c88affea9ae402d7358c079cfa7fc3ecb417085e31dc749da1406e72563bfbe42167fdad57e10aa0c6cca7a8ba06921b3a1212ad7ccee1a0f859b

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

Filesize
1KB

MD5
2e3da212e9a27bdf07405193d73e6c2a

SHA1
eb3c7d433743d877c8a4e214f460d764a842c939

SHA256
4b8db161f34f477962954113347ae0b081bea8031b5a616000c02509e427b3d1

SHA512
3ca7ff7c3bfa942447c4b187ec4e4f66bd14afabdf80934e5f5caf514b2f4ca4a55bf7f506873d1d251a53c16c4e50cdf00be1d37123a9fd05f0a41133938bb7

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_vb5faig0.x0q.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/532-228-0x00000184F0030000-0x00000184F0040000-memory.dmp

Filesize
64KB

Download
memory/532-226-0x00007FFD20C60000-0x00007FFD21721000-memory.dmp

Filesize
10.8MB

Download
memory/532-227-0x00000184F0030000-0x00000184F0040000-memory.dmp

Filesize
64KB

Download
memory/532-239-0x00000184F0030000-0x00000184F0040000-memory.dmp

Filesize
64KB

Download
memory/532-241-0x00007FFD20C60000-0x00007FFD21721000-memory.dmp

Filesize
10.8MB

Download
memory/1272-169-0x0000018BEACD0000-0x0000018BEACE0000-memory.dmp

Filesize
64KB

Download
memory/1272-154-0x00007FFD20C60000-0x00007FFD21721000-memory.dmp

Filesize
10.8MB

Download
memory/1272-165-0x0000018BEACD0000-0x0000018BEACE0000-memory.dmp

Filesize
64KB

Download
memory/1272-155-0x0000018BEACD0000-0x0000018BEACE0000-memory.dmp

Filesize
64KB

Download
memory/1272-167-0x0000018BEACD0000-0x0000018BEACE0000-memory.dmp

Filesize
64KB

Download
memory/1272-171-0x00007FFD20C60000-0x00007FFD21721000-memory.dmp

Filesize
10.8MB

Download
memory/1424-207-0x00000203961F0000-0x0000020396200000-memory.dmp

Filesize
64KB

Download
memory/1424-205-0x00007FFD20C60000-0x00007FFD21721000-memory.dmp

Filesize
10.8MB

Download
memory/1424-220-0x00007FFD20C60000-0x00007FFD21721000-memory.dmp

Filesize
10.8MB

Download
memory/1424-218-0x00000203961F0000-0x0000020396200000-memory.dmp

Filesize
64KB

Download
memory/1424-206-0x00000203961F0000-0x0000020396200000-memory.dmp

Filesize
64KB

Download
memory/4404-141-0x000001A691E80000-0x000001A691EA2000-memory.dmp

Filesize
136KB

Download
memory/4404-146-0x00007FFD20C60000-0x00007FFD21721000-memory.dmp

Filesize
10.8MB

Download
memory/4404-147-0x000001A691C20000-0x000001A691C30000-memory.dmp

Filesize
64KB

Download
memory/4404-148-0x000001A691C20000-0x000001A691C30000-memory.dmp

Filesize
64KB

Download
memory/4404-149-0x000001A691C20000-0x000001A691C30000-memory.dmp

Filesize
64KB

Download
memory/4404-152-0x00007FFD20C60000-0x00007FFD21721000-memory.dmp

Filesize
10.8MB

Download
memory/4476-179-0x0000025CD07A0000-0x0000025CD07B0000-memory.dmp

Filesize
64KB

Download
memory/4476-178-0x00007FFD20C60000-0x00007FFD21721000-memory.dmp

Filesize
10.8MB

Download
memory/4476-204-0x00007FFD20C60000-0x00007FFD21721000-memory.dmp

Filesize
10.8MB

Download
memory/4476-194-0x0000025CD07A0000-0x0000025CD07B0000-memory.dmp

Filesize
64KB

Download
memory/4772-223-0x00000199DF480000-0x00000199DF492000-memory.dmp

Filesize
72KB

Download
memory/4772-168-0x00007FFD20C60000-0x00007FFD21721000-memory.dmp

Filesize
10.8MB

Download
memory/4772-222-0x00000199DF260000-0x00000199DF26A000-memory.dmp

Filesize
40KB

Download
memory/4772-133-0x00000199C4C90000-0x00000199C4CD8000-memory.dmp

Filesize
288KB

Download
memory/4772-177-0x00000199DF270000-0x00000199DF280000-memory.dmp

Filesize
64KB

Download
memory/4772-176-0x00000199DF4F0000-0x00000199DF50E000-memory.dmp

Filesize
120KB

Download
memory/4772-175-0x00000199DF380000-0x00000199DF3D0000-memory.dmp

Filesize
320KB

Download
memory/4772-174-0x00000199DF400000-0x00000199DF476000-memory.dmp

Filesize
472KB

Download
memory/4772-135-0x00000199DF270000-0x00000199DF280000-memory.dmp

Filesize
64KB

Download
memory/4772-134-0x00007FFD20C60000-0x00007FFD21721000-memory.dmp

Filesize
10.8MB

Download
memory/4772-246-0x00007FFD20C60000-0x00007FFD21721000-memory.dmp

Filesize
10.8MB

Download