umbral | 7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-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
behavioral2/memory/4120-0-0x000001B61EA30000-0x000001B61EA70000-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
4688	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.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
32	discord.com
33	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
5	ip-api.com

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
4256	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
4856	PING.EXE

Suspicious behavior: EnumeratesProcesses 11 IoCs

pid	Process
4120	7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe
4688	powershell.exe
4688	powershell.exe
952	powershell.exe
952	powershell.exe
4652	powershell.exe
4652	powershell.exe
4860	powershell.exe
4860	powershell.exe
3772	powershell.exe
3772	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	4120	7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe
Token: SeIncreaseQuotaPrivilege	3720	wmic.exe
Token: SeSecurityPrivilege	3720	wmic.exe
Token: SeTakeOwnershipPrivilege	3720	wmic.exe
Token: SeLoadDriverPrivilege	3720	wmic.exe
Token: SeSystemProfilePrivilege	3720	wmic.exe
Token: SeSystemtimePrivilege	3720	wmic.exe
Token: SeProfSingleProcessPrivilege	3720	wmic.exe
Token: SeIncBasePriorityPrivilege	3720	wmic.exe
Token: SeCreatePagefilePrivilege	3720	wmic.exe
Token: SeBackupPrivilege	3720	wmic.exe
Token: SeRestorePrivilege	3720	wmic.exe
Token: SeShutdownPrivilege	3720	wmic.exe
Token: SeDebugPrivilege	3720	wmic.exe
Token: SeSystemEnvironmentPrivilege	3720	wmic.exe
Token: SeRemoteShutdownPrivilege	3720	wmic.exe
Token: SeUndockPrivilege	3720	wmic.exe
Token: SeManageVolumePrivilege	3720	wmic.exe
Token: 33	3720	wmic.exe
Token: 34	3720	wmic.exe
Token: 35	3720	wmic.exe
Token: 36	3720	wmic.exe
Token: SeIncreaseQuotaPrivilege	3720	wmic.exe
Token: SeSecurityPrivilege	3720	wmic.exe
Token: SeTakeOwnershipPrivilege	3720	wmic.exe
Token: SeLoadDriverPrivilege	3720	wmic.exe
Token: SeSystemProfilePrivilege	3720	wmic.exe
Token: SeSystemtimePrivilege	3720	wmic.exe
Token: SeProfSingleProcessPrivilege	3720	wmic.exe
Token: SeIncBasePriorityPrivilege	3720	wmic.exe
Token: SeCreatePagefilePrivilege	3720	wmic.exe
Token: SeBackupPrivilege	3720	wmic.exe
Token: SeRestorePrivilege	3720	wmic.exe
Token: SeShutdownPrivilege	3720	wmic.exe
Token: SeDebugPrivilege	3720	wmic.exe
Token: SeSystemEnvironmentPrivilege	3720	wmic.exe
Token: SeRemoteShutdownPrivilege	3720	wmic.exe
Token: SeUndockPrivilege	3720	wmic.exe
Token: SeManageVolumePrivilege	3720	wmic.exe
Token: 33	3720	wmic.exe
Token: 34	3720	wmic.exe
Token: 35	3720	wmic.exe
Token: 36	3720	wmic.exe
Token: SeDebugPrivilege	4688	powershell.exe
Token: SeDebugPrivilege	952	powershell.exe
Token: SeDebugPrivilege	4652	powershell.exe
Token: SeDebugPrivilege	4860	powershell.exe
Token: SeIncreaseQuotaPrivilege	544	wmic.exe
Token: SeSecurityPrivilege	544	wmic.exe
Token: SeTakeOwnershipPrivilege	544	wmic.exe
Token: SeLoadDriverPrivilege	544	wmic.exe
Token: SeSystemProfilePrivilege	544	wmic.exe
Token: SeSystemtimePrivilege	544	wmic.exe
Token: SeProfSingleProcessPrivilege	544	wmic.exe
Token: SeIncBasePriorityPrivilege	544	wmic.exe
Token: SeCreatePagefilePrivilege	544	wmic.exe
Token: SeBackupPrivilege	544	wmic.exe
Token: SeRestorePrivilege	544	wmic.exe
Token: SeShutdownPrivilege	544	wmic.exe
Token: SeDebugPrivilege	544	wmic.exe
Token: SeSystemEnvironmentPrivilege	544	wmic.exe
Token: SeRemoteShutdownPrivilege	544	wmic.exe
Token: SeUndockPrivilege	544	wmic.exe
Token: SeManageVolumePrivilege	544	wmic.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 4120 wrote to memory of 3720	4120	7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe	83
PID 4120 wrote to memory of 3720	4120	7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe	83
PID 4120 wrote to memory of 3760	4120	7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe	89
PID 4120 wrote to memory of 3760	4120	7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe	89
PID 4120 wrote to memory of 4688	4120	7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe	91
PID 4120 wrote to memory of 4688	4120	7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe	91
PID 4120 wrote to memory of 952	4120	7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe	93
PID 4120 wrote to memory of 952	4120	7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe	93
PID 4120 wrote to memory of 4652	4120	7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe	97
PID 4120 wrote to memory of 4652	4120	7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe	97
PID 4120 wrote to memory of 4860	4120	7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe	99
PID 4120 wrote to memory of 4860	4120	7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe	99
PID 4120 wrote to memory of 544	4120	7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe	102
PID 4120 wrote to memory of 544	4120	7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe	102
PID 4120 wrote to memory of 4228	4120	7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe	104
PID 4120 wrote to memory of 4228	4120	7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe	104
PID 4120 wrote to memory of 2660	4120	7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe	106
PID 4120 wrote to memory of 2660	4120	7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe	106
PID 4120 wrote to memory of 3772	4120	7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe	108
PID 4120 wrote to memory of 3772	4120	7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe	108
PID 4120 wrote to memory of 4256	4120	7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe	110
PID 4120 wrote to memory of 4256	4120	7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe	110
PID 4120 wrote to memory of 3948	4120	7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe	117
PID 4120 wrote to memory of 3948	4120	7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe	117
PID 3948 wrote to memory of 4856	3948	cmd.exe	119
PID 3948 wrote to memory of 4856	3948	cmd.exe	119

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
3760	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:4120
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:3720
- C:\Windows\SYSTEM32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe"
  2⤵
  - Views/modifies file attributes
  PID:3760
- 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:4688
- 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:952
- 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:4652
- 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:4860
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:544
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:4228
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:2660
- 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:3772
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:4256
- C:\Windows\SYSTEM32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe" && pause
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3948
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - Runs ping.exe
    PID:4856

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\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
d28a889fd956d5cb3accfbaf1143eb6f

SHA1
157ba54b365341f8ff06707d996b3635da8446f7

SHA256
21e5d7ccf80a293e6ba30ed728846ca19c929c52b96e2c8d34e27cd2234f1d45

SHA512
0b6d88deb9be85722e6a78d5886d49f2caf407a59e128d2b4ed74c1356f9928c40048a62731959f2460e9ff9d9feee311043d2a37abe3bb92c2b76a44281478c

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

Filesize
948B

MD5
5824a6037c081fda5d46de274b6e2799

SHA1
526367a09300cbde430e8fb44e41cbe7a0937aac

SHA256
4d610d9cd32a20279c7133a726ff61820d6930e5aa18253ee1422f3a6f54953f

SHA512
a109b150f730cda78d5bee106bd232f9dca7500dfb7899c6919de2bd542e345ca271aa11809a24ea0a27dca158067ab3a2d5688ac0a2325185143245f1665582

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

Filesize
1KB

MD5
88be3bc8a7f90e3953298c0fdbec4d72

SHA1
f4969784ad421cc80ef45608727aacd0f6bf2e4b

SHA256
533c8470b41084e40c5660569ebbdb7496520d449629a235e8053e84025f348a

SHA512
4fce64e2dacddbc03314048fef1ce356ee2647c14733da121c23c65507eeb8d721d6b690ad5463319b364dc4fa95904ad6ab096907f32918e3406ef438a6ef7c

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

Filesize
1KB

MD5
feeec590469335adc2d69ba346852581

SHA1
628a1894ea560a293a79139707a1d4ec971be506

SHA256
36a91f3b70b651061c8898fad32f62e44e24f988b02216c67132f992262ae4fc

SHA512
a99781509a60ffc226d03b898b70ab6f87649ef9487afe5b058e5eb4601739d80854d1dbeee9ee894bbfba562ef3b4a5cb86871534de63e45180e79726c7073b

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_pcdjra3p.4qq.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/4120-71-0x000001B620800000-0x000001B62080A000-memory.dmp

Filesize
40KB

Download
memory/4120-35-0x000001B6207C0000-0x000001B6207DE000-memory.dmp

Filesize
120KB

Download
memory/4120-90-0x00007FFFEFE50000-0x00007FFFF0911000-memory.dmp

Filesize
10.8MB

Download
memory/4120-72-0x000001B638F90000-0x000001B638FA2000-memory.dmp

Filesize
72KB

Download
memory/4120-2-0x00007FFFEFE50000-0x00007FFFF0911000-memory.dmp

Filesize
10.8MB

Download
memory/4120-33-0x000001B638F10000-0x000001B638F86000-memory.dmp

Filesize
472KB

Download
memory/4120-34-0x000001B639220000-0x000001B639270000-memory.dmp

Filesize
320KB

Download
memory/4120-0-0x000001B61EA30000-0x000001B61EA70000-memory.dmp

Filesize
256KB

Download
memory/4120-1-0x00007FFFEFE53000-0x00007FFFEFE55000-memory.dmp

Filesize
8KB

Download
memory/4688-15-0x00007FFFEFE50000-0x00007FFFF0911000-memory.dmp

Filesize
10.8MB

Download
memory/4688-9-0x00000249F5F50000-0x00000249F5F72000-memory.dmp

Filesize
136KB

Download
memory/4688-3-0x00007FFFEFE50000-0x00007FFFF0911000-memory.dmp

Filesize
10.8MB

Download
memory/4688-14-0x00007FFFEFE50000-0x00007FFFF0911000-memory.dmp

Filesize
10.8MB

Download
memory/4688-18-0x00007FFFEFE50000-0x00007FFFF0911000-memory.dmp

Filesize
10.8MB

Download