umbral | 7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c

Analysis

max time kernel
117s
max time network
118s
platform
windows7_x64
resource
win7-20240419-en
resource tags

arch:x64arch:x86image:win7-20240419-enlocale:en-usos:windows7-x64system
submitted
19-05-2024 14:37

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General

Target

7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe
Size

227KB
MD5

4ca902918277ffd054ecac215e6b99bf
SHA1

d5d14bcd985e9780289d97478291e4c011417acc
SHA256

7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c
SHA512

90e316478a2e2db35a3c2528b4c4c7d366daef43b11de969fff824750238b5dc706fdad63335635bd590327db3c8683163a2c77345bafd26a6cb2cc0a58ebcd7
SSDEEP

6144:eloZM+rIkd8g+EtXHkv/iD41ckD2U7X85toGnnGdXb8e1mZi:IoZtL+EP81ckD2U7X85toGnnGpr

Score

10^/10

umbral execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/2052-1-0x0000000000AE0000-0x0000000000B20000-memory.dmp	family_umbral

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

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
2944	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe

Deletes itself 1 IoCs

pid	Process
2516	cmd.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
9	discord.com
10	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
6	ip-api.com

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
2068	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2120	PING.EXE

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2052	7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe
2944	powershell.exe
2700	powershell.exe
3040	powershell.exe
2892	powershell.exe
1824	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2052	7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe
Token: SeIncreaseQuotaPrivilege	2104	wmic.exe
Token: SeSecurityPrivilege	2104	wmic.exe
Token: SeTakeOwnershipPrivilege	2104	wmic.exe
Token: SeLoadDriverPrivilege	2104	wmic.exe
Token: SeSystemProfilePrivilege	2104	wmic.exe
Token: SeSystemtimePrivilege	2104	wmic.exe
Token: SeProfSingleProcessPrivilege	2104	wmic.exe
Token: SeIncBasePriorityPrivilege	2104	wmic.exe
Token: SeCreatePagefilePrivilege	2104	wmic.exe
Token: SeBackupPrivilege	2104	wmic.exe
Token: SeRestorePrivilege	2104	wmic.exe
Token: SeShutdownPrivilege	2104	wmic.exe
Token: SeDebugPrivilege	2104	wmic.exe
Token: SeSystemEnvironmentPrivilege	2104	wmic.exe
Token: SeRemoteShutdownPrivilege	2104	wmic.exe
Token: SeUndockPrivilege	2104	wmic.exe
Token: SeManageVolumePrivilege	2104	wmic.exe
Token: 33	2104	wmic.exe
Token: 34	2104	wmic.exe
Token: 35	2104	wmic.exe
Token: SeIncreaseQuotaPrivilege	2104	wmic.exe
Token: SeSecurityPrivilege	2104	wmic.exe
Token: SeTakeOwnershipPrivilege	2104	wmic.exe
Token: SeLoadDriverPrivilege	2104	wmic.exe
Token: SeSystemProfilePrivilege	2104	wmic.exe
Token: SeSystemtimePrivilege	2104	wmic.exe
Token: SeProfSingleProcessPrivilege	2104	wmic.exe
Token: SeIncBasePriorityPrivilege	2104	wmic.exe
Token: SeCreatePagefilePrivilege	2104	wmic.exe
Token: SeBackupPrivilege	2104	wmic.exe
Token: SeRestorePrivilege	2104	wmic.exe
Token: SeShutdownPrivilege	2104	wmic.exe
Token: SeDebugPrivilege	2104	wmic.exe
Token: SeSystemEnvironmentPrivilege	2104	wmic.exe
Token: SeRemoteShutdownPrivilege	2104	wmic.exe
Token: SeUndockPrivilege	2104	wmic.exe
Token: SeManageVolumePrivilege	2104	wmic.exe
Token: 33	2104	wmic.exe
Token: 34	2104	wmic.exe
Token: 35	2104	wmic.exe
Token: SeDebugPrivilege	2944	powershell.exe
Token: SeDebugPrivilege	2700	powershell.exe
Token: SeDebugPrivilege	3040	powershell.exe
Token: SeDebugPrivilege	2892	powershell.exe
Token: SeIncreaseQuotaPrivilege	1828	wmic.exe
Token: SeSecurityPrivilege	1828	wmic.exe
Token: SeTakeOwnershipPrivilege	1828	wmic.exe
Token: SeLoadDriverPrivilege	1828	wmic.exe
Token: SeSystemProfilePrivilege	1828	wmic.exe
Token: SeSystemtimePrivilege	1828	wmic.exe
Token: SeProfSingleProcessPrivilege	1828	wmic.exe
Token: SeIncBasePriorityPrivilege	1828	wmic.exe
Token: SeCreatePagefilePrivilege	1828	wmic.exe
Token: SeBackupPrivilege	1828	wmic.exe
Token: SeRestorePrivilege	1828	wmic.exe
Token: SeShutdownPrivilege	1828	wmic.exe
Token: SeDebugPrivilege	1828	wmic.exe
Token: SeSystemEnvironmentPrivilege	1828	wmic.exe
Token: SeRemoteShutdownPrivilege	1828	wmic.exe
Token: SeUndockPrivilege	1828	wmic.exe
Token: SeManageVolumePrivilege	1828	wmic.exe
Token: 33	1828	wmic.exe
Token: 34	1828	wmic.exe

Suspicious use of WriteProcessMemory 39 IoCs

description	pid	Process	procid_target
PID 2052 wrote to memory of 2104	2052	7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe	28
PID 2052 wrote to memory of 2104	2052	7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe	28
PID 2052 wrote to memory of 2104	2052	7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe	28
PID 2052 wrote to memory of 2948	2052	7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe	31
PID 2052 wrote to memory of 2948	2052	7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe	31
PID 2052 wrote to memory of 2948	2052	7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe	31
PID 2052 wrote to memory of 2944	2052	7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe	33
PID 2052 wrote to memory of 2944	2052	7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe	33
PID 2052 wrote to memory of 2944	2052	7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe	33
PID 2052 wrote to memory of 2700	2052	7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe	35
PID 2052 wrote to memory of 2700	2052	7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe	35
PID 2052 wrote to memory of 2700	2052	7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe	35
PID 2052 wrote to memory of 3040	2052	7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe	37
PID 2052 wrote to memory of 3040	2052	7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe	37
PID 2052 wrote to memory of 3040	2052	7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe	37
PID 2052 wrote to memory of 2892	2052	7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe	39
PID 2052 wrote to memory of 2892	2052	7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe	39
PID 2052 wrote to memory of 2892	2052	7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe	39
PID 2052 wrote to memory of 1828	2052	7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe	41
PID 2052 wrote to memory of 1828	2052	7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe	41
PID 2052 wrote to memory of 1828	2052	7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe	41
PID 2052 wrote to memory of 1576	2052	7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe	43
PID 2052 wrote to memory of 1576	2052	7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe	43
PID 2052 wrote to memory of 1576	2052	7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe	43
PID 2052 wrote to memory of 2812	2052	7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe	45
PID 2052 wrote to memory of 2812	2052	7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe	45
PID 2052 wrote to memory of 2812	2052	7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe	45
PID 2052 wrote to memory of 1824	2052	7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe	47
PID 2052 wrote to memory of 1824	2052	7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe	47
PID 2052 wrote to memory of 1824	2052	7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe	47
PID 2052 wrote to memory of 2068	2052	7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe	49
PID 2052 wrote to memory of 2068	2052	7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe	49
PID 2052 wrote to memory of 2068	2052	7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe	49
PID 2052 wrote to memory of 2516	2052	7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe	51
PID 2052 wrote to memory of 2516	2052	7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe	51
PID 2052 wrote to memory of 2516	2052	7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe	51
PID 2516 wrote to memory of 2120	2516	cmd.exe	53
PID 2516 wrote to memory of 2120	2516	cmd.exe	53
PID 2516 wrote to memory of 2120	2516	cmd.exe	53

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
2948	attrib.exe

C:\Users\Admin\AppData\Local\Temp\7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe
"C:\Users\Admin\AppData\Local\Temp\7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe"
1⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2052
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2104
- C:\Windows\system32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe"
  2⤵
  - Views/modifies file attributes
  PID:2948
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2944
- 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:2700
- 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:3040
- 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:2892
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1828
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:1576
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:2812
- 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:1824
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:2068
- C:\Windows\system32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe" && pause
  2⤵
  - Deletes itself
  - Suspicious use of WriteProcessMemory
  PID:2516
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - Runs ping.exe
    PID:2120

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

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

Filesize
7KB

MD5
26f16eedff2794ac4712029932d41d41

SHA1
51cc108ea8cf1b46fe14391f5efc307c78c164cf

SHA256
741772c0978be7968242cc7ed755f2e4c413aa23290a5568e1e4f607f38a0463

SHA512
1b08edb1394c8a182396fe0c9d26962b13965f442f6e2489173003aefd3e953d18cab376a3b11a1161275f9bfab3a92ae4d25cfcb95eb2468e76969c0d58ce0b

Download Submit
memory/1824-44-0x00000000029E0000-0x00000000029E8000-memory.dmp

Filesize
32KB

Download
memory/2052-0-0x000007FEF53C3000-0x000007FEF53C4000-memory.dmp

Filesize
4KB

Download
memory/2052-1-0x0000000000AE0000-0x0000000000B20000-memory.dmp

Filesize
256KB

Download
memory/2052-2-0x000007FEF53C0000-0x000007FEF5DAC000-memory.dmp

Filesize
9.9MB

Download
memory/2052-48-0x000007FEF53C0000-0x000007FEF5DAC000-memory.dmp

Filesize
9.9MB

Download
memory/2700-14-0x000000001B600000-0x000000001B8E2000-memory.dmp

Filesize
2.9MB

Download
memory/2700-15-0x00000000021D0000-0x00000000021D8000-memory.dmp

Filesize
32KB

Download
memory/2944-7-0x000000001B650000-0x000000001B932000-memory.dmp

Filesize
2.9MB

Download
memory/2944-8-0x0000000002290000-0x0000000002298000-memory.dmp

Filesize
32KB

Download