umbral | a9e16fdb1ad53a73784a03803410b238e2de590eb1f7a1d6e4dfa0354ef99ca0

Analysis

max time kernel
117s
max time network
121s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
29-02-2024 13:38

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General

Target

injector.exe
Size

231KB
MD5

0a40e097ff34f2786e6a1b1c2695db2d
SHA1

7701f374e627f5624ee7b792c777d2b59b41ac20
SHA256

a9e16fdb1ad53a73784a03803410b238e2de590eb1f7a1d6e4dfa0354ef99ca0
SHA512

3ed97fbbd49460b582c51059b7e96535a951820179e89492f16668d176c8bb33ebaf8f4e056e5e909fcda74167dfa71cd8f83db840b10fb084019ae675982c47
SSDEEP

6144:xloZMArIkd8g+EtXHkv/iD44gTVBPUonRWvRsY94Fb8e1mFrQi:DoZHL+EP84gTVBPUonRWvRsY9sOJ

Score

10^/10

umbral spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/2120-0-0x0000000000C60000-0x0000000000CA0000-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	injector.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
6	discord.com
7	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
4	ip-api.com

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
2304	wmic.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
2624	powershell.exe
2448	powershell.exe
2968	powershell.exe
672	powershell.exe
2784	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2120	injector.exe
Token: SeDebugPrivilege	2624	powershell.exe
Token: SeDebugPrivilege	2448	powershell.exe
Token: SeDebugPrivilege	2968	powershell.exe
Token: SeDebugPrivilege	672	powershell.exe
Token: SeIncreaseQuotaPrivilege	2508	wmic.exe
Token: SeSecurityPrivilege	2508	wmic.exe
Token: SeTakeOwnershipPrivilege	2508	wmic.exe
Token: SeLoadDriverPrivilege	2508	wmic.exe
Token: SeSystemProfilePrivilege	2508	wmic.exe
Token: SeSystemtimePrivilege	2508	wmic.exe
Token: SeProfSingleProcessPrivilege	2508	wmic.exe
Token: SeIncBasePriorityPrivilege	2508	wmic.exe
Token: SeCreatePagefilePrivilege	2508	wmic.exe
Token: SeBackupPrivilege	2508	wmic.exe
Token: SeRestorePrivilege	2508	wmic.exe
Token: SeShutdownPrivilege	2508	wmic.exe
Token: SeDebugPrivilege	2508	wmic.exe
Token: SeSystemEnvironmentPrivilege	2508	wmic.exe
Token: SeRemoteShutdownPrivilege	2508	wmic.exe
Token: SeUndockPrivilege	2508	wmic.exe
Token: SeManageVolumePrivilege	2508	wmic.exe
Token: 33	2508	wmic.exe
Token: 34	2508	wmic.exe
Token: 35	2508	wmic.exe
Token: SeIncreaseQuotaPrivilege	2508	wmic.exe
Token: SeSecurityPrivilege	2508	wmic.exe
Token: SeTakeOwnershipPrivilege	2508	wmic.exe
Token: SeLoadDriverPrivilege	2508	wmic.exe
Token: SeSystemProfilePrivilege	2508	wmic.exe
Token: SeSystemtimePrivilege	2508	wmic.exe
Token: SeProfSingleProcessPrivilege	2508	wmic.exe
Token: SeIncBasePriorityPrivilege	2508	wmic.exe
Token: SeCreatePagefilePrivilege	2508	wmic.exe
Token: SeBackupPrivilege	2508	wmic.exe
Token: SeRestorePrivilege	2508	wmic.exe
Token: SeShutdownPrivilege	2508	wmic.exe
Token: SeDebugPrivilege	2508	wmic.exe
Token: SeSystemEnvironmentPrivilege	2508	wmic.exe
Token: SeRemoteShutdownPrivilege	2508	wmic.exe
Token: SeUndockPrivilege	2508	wmic.exe
Token: SeManageVolumePrivilege	2508	wmic.exe
Token: 33	2508	wmic.exe
Token: 34	2508	wmic.exe
Token: 35	2508	wmic.exe
Token: SeIncreaseQuotaPrivilege	1408	wmic.exe
Token: SeSecurityPrivilege	1408	wmic.exe
Token: SeTakeOwnershipPrivilege	1408	wmic.exe
Token: SeLoadDriverPrivilege	1408	wmic.exe
Token: SeSystemProfilePrivilege	1408	wmic.exe
Token: SeSystemtimePrivilege	1408	wmic.exe
Token: SeProfSingleProcessPrivilege	1408	wmic.exe
Token: SeIncBasePriorityPrivilege	1408	wmic.exe
Token: SeCreatePagefilePrivilege	1408	wmic.exe
Token: SeBackupPrivilege	1408	wmic.exe
Token: SeRestorePrivilege	1408	wmic.exe
Token: SeShutdownPrivilege	1408	wmic.exe
Token: SeDebugPrivilege	1408	wmic.exe
Token: SeSystemEnvironmentPrivilege	1408	wmic.exe
Token: SeRemoteShutdownPrivilege	1408	wmic.exe
Token: SeUndockPrivilege	1408	wmic.exe
Token: SeManageVolumePrivilege	1408	wmic.exe
Token: 33	1408	wmic.exe
Token: 34	1408	wmic.exe

Suspicious use of WriteProcessMemory 27 IoCs

description	pid	Process	procid_target
PID 2120 wrote to memory of 2624	2120	injector.exe	28
PID 2120 wrote to memory of 2624	2120	injector.exe	28
PID 2120 wrote to memory of 2624	2120	injector.exe	28
PID 2120 wrote to memory of 2448	2120	injector.exe	31
PID 2120 wrote to memory of 2448	2120	injector.exe	31
PID 2120 wrote to memory of 2448	2120	injector.exe	31
PID 2120 wrote to memory of 2968	2120	injector.exe	32
PID 2120 wrote to memory of 2968	2120	injector.exe	32
PID 2120 wrote to memory of 2968	2120	injector.exe	32
PID 2120 wrote to memory of 672	2120	injector.exe	35
PID 2120 wrote to memory of 672	2120	injector.exe	35
PID 2120 wrote to memory of 672	2120	injector.exe	35
PID 2120 wrote to memory of 2508	2120	injector.exe	36
PID 2120 wrote to memory of 2508	2120	injector.exe	36
PID 2120 wrote to memory of 2508	2120	injector.exe	36
PID 2120 wrote to memory of 1408	2120	injector.exe	40
PID 2120 wrote to memory of 1408	2120	injector.exe	40
PID 2120 wrote to memory of 1408	2120	injector.exe	40
PID 2120 wrote to memory of 972	2120	injector.exe	42
PID 2120 wrote to memory of 972	2120	injector.exe	42
PID 2120 wrote to memory of 972	2120	injector.exe	42
PID 2120 wrote to memory of 2784	2120	injector.exe	44
PID 2120 wrote to memory of 2784	2120	injector.exe	44
PID 2120 wrote to memory of 2784	2120	injector.exe	44
PID 2120 wrote to memory of 2304	2120	injector.exe	46
PID 2120 wrote to memory of 2304	2120	injector.exe	46
PID 2120 wrote to memory of 2304	2120	injector.exe	46

C:\Users\Admin\AppData\Local\Temp\injector.exe
"C:\Users\Admin\AppData\Local\Temp\injector.exe"
1⤵
- Drops file in Drivers directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2120
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\injector.exe'
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2624
- 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:2448
- 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:2968
- 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:672
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2508
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1408
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:972
- 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:2784
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:2304

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

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\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms

Filesize
7KB

MD5
efbb307ba6a1ea1dc5d88134c91ad8aa

SHA1
a67e4e08b1c50fc2c9607e82ef6d565d3c1447fa

SHA256
0a6721b9ba92af4dc896e27cf55977643b5597eeafc47c4098c3e3fb1afc3415

SHA512
1793b4c855c5a204c8e98bee8af1a38607dd629053ea3659f60565c3d26a191db603807b5f792d9c1e1afb5c5c931fd1c9bac17519c0ab8ab27860272960d100

Download Submit
memory/672-62-0x00000000027C0000-0x0000000002840000-memory.dmp

Filesize
512KB

Download
memory/672-60-0x00000000027C0000-0x0000000002840000-memory.dmp

Filesize
512KB

Download
memory/672-56-0x000007FEED510000-0x000007FEEDEAD000-memory.dmp

Filesize
9.6MB

Download
memory/672-64-0x000007FEED510000-0x000007FEEDEAD000-memory.dmp

Filesize
9.6MB

Download
memory/672-63-0x00000000027C0000-0x0000000002840000-memory.dmp

Filesize
512KB

Download
memory/672-57-0x00000000027C0000-0x0000000002840000-memory.dmp

Filesize
512KB

Download
memory/672-58-0x000007FEED510000-0x000007FEEDEAD000-memory.dmp

Filesize
9.6MB

Download
memory/672-59-0x000007FEED510000-0x000007FEEDEAD000-memory.dmp

Filesize
9.6MB

Download
memory/2120-50-0x000007FEF5DA0000-0x000007FEF678C000-memory.dmp

Filesize
9.9MB

Download
memory/2120-61-0x000000001B2A0000-0x000000001B320000-memory.dmp

Filesize
512KB

Download
memory/2120-0-0x0000000000C60000-0x0000000000CA0000-memory.dmp

Filesize
256KB

Download
memory/2120-1-0x000007FEF5DA0000-0x000007FEF678C000-memory.dmp

Filesize
9.9MB

Download
memory/2120-2-0x000000001B2A0000-0x000000001B320000-memory.dmp

Filesize
512KB

Download
memory/2120-84-0x000007FEF5DA0000-0x000007FEF678C000-memory.dmp

Filesize
9.9MB

Download
memory/2448-21-0x000000001B330000-0x000000001B612000-memory.dmp

Filesize
2.9MB

Download
memory/2448-24-0x0000000002BE0000-0x0000000002C60000-memory.dmp

Filesize
512KB

Download
memory/2448-25-0x000007FEED510000-0x000007FEEDEAD000-memory.dmp

Filesize
9.6MB

Download
memory/2448-26-0x0000000002BE0000-0x0000000002C60000-memory.dmp

Filesize
512KB

Download
memory/2448-27-0x0000000002BE0000-0x0000000002C60000-memory.dmp

Filesize
512KB

Download
memory/2448-28-0x0000000002BE0000-0x0000000002C60000-memory.dmp

Filesize
512KB

Download
memory/2448-29-0x000007FEED510000-0x000007FEEDEAD000-memory.dmp

Filesize
9.6MB

Download
memory/2448-22-0x0000000001E60000-0x0000000001E68000-memory.dmp

Filesize
32KB

Download
memory/2448-23-0x000007FEED510000-0x000007FEEDEAD000-memory.dmp

Filesize
9.6MB

Download
memory/2624-13-0x00000000025B0000-0x0000000002630000-memory.dmp

Filesize
512KB

Download
memory/2624-9-0x000007FEEDEB0000-0x000007FEEE84D000-memory.dmp

Filesize
9.6MB

Download
memory/2624-10-0x00000000025B0000-0x0000000002630000-memory.dmp

Filesize
512KB

Download
memory/2624-11-0x00000000025B0000-0x0000000002630000-memory.dmp

Filesize
512KB

Download
memory/2624-12-0x000007FEEDEB0000-0x000007FEEE84D000-memory.dmp

Filesize
9.6MB

Download
memory/2624-8-0x0000000001D80000-0x0000000001D88000-memory.dmp

Filesize
32KB

Download
memory/2624-7-0x000000001B380000-0x000000001B662000-memory.dmp

Filesize
2.9MB

Download
memory/2624-15-0x000007FEEDEB0000-0x000007FEEE84D000-memory.dmp

Filesize
9.6MB

Download
memory/2624-14-0x00000000025B0000-0x0000000002630000-memory.dmp

Filesize
512KB

Download
memory/2784-76-0x000007FEEDEB0000-0x000007FEEE84D000-memory.dmp

Filesize
9.6MB

Download
memory/2784-77-0x0000000002650000-0x00000000026D0000-memory.dmp

Filesize
512KB

Download
memory/2784-79-0x0000000002650000-0x00000000026D0000-memory.dmp

Filesize
512KB

Download
memory/2784-78-0x0000000002650000-0x00000000026D0000-memory.dmp

Filesize
512KB

Download
memory/2784-75-0x0000000002650000-0x00000000026D0000-memory.dmp

Filesize
512KB

Download
memory/2784-80-0x000007FEEDEB0000-0x000007FEEE84D000-memory.dmp

Filesize
9.6MB

Download
memory/2784-73-0x0000000001F30000-0x0000000001F38000-memory.dmp

Filesize
32KB

Download
memory/2784-74-0x000007FEEDEB0000-0x000007FEEE84D000-memory.dmp

Filesize
9.6MB

Download
memory/2968-49-0x000007FEEDEB0000-0x000007FEEE84D000-memory.dmp

Filesize
9.6MB

Download
memory/2968-45-0x000007FEEDEB0000-0x000007FEEE84D000-memory.dmp

Filesize
9.6MB

Download
memory/2968-47-0x00000000025F0000-0x0000000002670000-memory.dmp

Filesize
512KB

Download
memory/2968-48-0x00000000025F0000-0x0000000002670000-memory.dmp

Filesize
512KB

Download
memory/2968-46-0x00000000025F0000-0x0000000002670000-memory.dmp

Filesize
512KB

Download
memory/2968-44-0x00000000025F0000-0x0000000002670000-memory.dmp

Filesize
512KB

Download
memory/2968-43-0x000007FEEDEB0000-0x000007FEEE84D000-memory.dmp

Filesize
9.6MB

Download