umbral | 7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c

Analysis

max time kernel
131s
max time network
123s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
20-05-2024 01:15

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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/4940-0-0x0000015B099D0000-0x0000015B09A10000-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
3660	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
24	discord.com
25	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
8	ip-api.com

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
3196	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2456	PING.EXE

Suspicious behavior: EnumeratesProcesses 11 IoCs

pid	Process
4940	7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe
3660	powershell.exe
3660	powershell.exe
3048	powershell.exe
3048	powershell.exe
3192	powershell.exe
3192	powershell.exe
1664	powershell.exe
1664	powershell.exe
4068	powershell.exe
4068	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	4940	7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe
Token: SeIncreaseQuotaPrivilege	5036	wmic.exe
Token: SeSecurityPrivilege	5036	wmic.exe
Token: SeTakeOwnershipPrivilege	5036	wmic.exe
Token: SeLoadDriverPrivilege	5036	wmic.exe
Token: SeSystemProfilePrivilege	5036	wmic.exe
Token: SeSystemtimePrivilege	5036	wmic.exe
Token: SeProfSingleProcessPrivilege	5036	wmic.exe
Token: SeIncBasePriorityPrivilege	5036	wmic.exe
Token: SeCreatePagefilePrivilege	5036	wmic.exe
Token: SeBackupPrivilege	5036	wmic.exe
Token: SeRestorePrivilege	5036	wmic.exe
Token: SeShutdownPrivilege	5036	wmic.exe
Token: SeDebugPrivilege	5036	wmic.exe
Token: SeSystemEnvironmentPrivilege	5036	wmic.exe
Token: SeRemoteShutdownPrivilege	5036	wmic.exe
Token: SeUndockPrivilege	5036	wmic.exe
Token: SeManageVolumePrivilege	5036	wmic.exe
Token: 33	5036	wmic.exe
Token: 34	5036	wmic.exe
Token: 35	5036	wmic.exe
Token: 36	5036	wmic.exe
Token: SeIncreaseQuotaPrivilege	5036	wmic.exe
Token: SeSecurityPrivilege	5036	wmic.exe
Token: SeTakeOwnershipPrivilege	5036	wmic.exe
Token: SeLoadDriverPrivilege	5036	wmic.exe
Token: SeSystemProfilePrivilege	5036	wmic.exe
Token: SeSystemtimePrivilege	5036	wmic.exe
Token: SeProfSingleProcessPrivilege	5036	wmic.exe
Token: SeIncBasePriorityPrivilege	5036	wmic.exe
Token: SeCreatePagefilePrivilege	5036	wmic.exe
Token: SeBackupPrivilege	5036	wmic.exe
Token: SeRestorePrivilege	5036	wmic.exe
Token: SeShutdownPrivilege	5036	wmic.exe
Token: SeDebugPrivilege	5036	wmic.exe
Token: SeSystemEnvironmentPrivilege	5036	wmic.exe
Token: SeRemoteShutdownPrivilege	5036	wmic.exe
Token: SeUndockPrivilege	5036	wmic.exe
Token: SeManageVolumePrivilege	5036	wmic.exe
Token: 33	5036	wmic.exe
Token: 34	5036	wmic.exe
Token: 35	5036	wmic.exe
Token: 36	5036	wmic.exe
Token: SeDebugPrivilege	3660	powershell.exe
Token: SeDebugPrivilege	3048	powershell.exe
Token: SeDebugPrivilege	3192	powershell.exe
Token: SeDebugPrivilege	1664	powershell.exe
Token: SeIncreaseQuotaPrivilege	4420	wmic.exe
Token: SeSecurityPrivilege	4420	wmic.exe
Token: SeTakeOwnershipPrivilege	4420	wmic.exe
Token: SeLoadDriverPrivilege	4420	wmic.exe
Token: SeSystemProfilePrivilege	4420	wmic.exe
Token: SeSystemtimePrivilege	4420	wmic.exe
Token: SeProfSingleProcessPrivilege	4420	wmic.exe
Token: SeIncBasePriorityPrivilege	4420	wmic.exe
Token: SeCreatePagefilePrivilege	4420	wmic.exe
Token: SeBackupPrivilege	4420	wmic.exe
Token: SeRestorePrivilege	4420	wmic.exe
Token: SeShutdownPrivilege	4420	wmic.exe
Token: SeDebugPrivilege	4420	wmic.exe
Token: SeSystemEnvironmentPrivilege	4420	wmic.exe
Token: SeRemoteShutdownPrivilege	4420	wmic.exe
Token: SeUndockPrivilege	4420	wmic.exe
Token: SeManageVolumePrivilege	4420	wmic.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 4940 wrote to memory of 5036	4940	7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe	83
PID 4940 wrote to memory of 5036	4940	7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe	83
PID 4940 wrote to memory of 1356	4940	7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe	87
PID 4940 wrote to memory of 1356	4940	7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe	87
PID 4940 wrote to memory of 3660	4940	7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe	89
PID 4940 wrote to memory of 3660	4940	7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe	89
PID 4940 wrote to memory of 3048	4940	7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe	91
PID 4940 wrote to memory of 3048	4940	7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe	91
PID 4940 wrote to memory of 3192	4940	7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe	94
PID 4940 wrote to memory of 3192	4940	7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe	94
PID 4940 wrote to memory of 1664	4940	7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe	96
PID 4940 wrote to memory of 1664	4940	7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe	96
PID 4940 wrote to memory of 4420	4940	7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe	98
PID 4940 wrote to memory of 4420	4940	7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe	98
PID 4940 wrote to memory of 1668	4940	7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe	100
PID 4940 wrote to memory of 1668	4940	7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe	100
PID 4940 wrote to memory of 3736	4940	7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe	102
PID 4940 wrote to memory of 3736	4940	7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe	102
PID 4940 wrote to memory of 4068	4940	7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe	104
PID 4940 wrote to memory of 4068	4940	7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe	104
PID 4940 wrote to memory of 3196	4940	7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe	108
PID 4940 wrote to memory of 3196	4940	7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe	108
PID 4940 wrote to memory of 5072	4940	7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe	111
PID 4940 wrote to memory of 5072	4940	7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe	111
PID 5072 wrote to memory of 2456	5072	cmd.exe	113
PID 5072 wrote to memory of 2456	5072	cmd.exe	113

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
1356	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:4940
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:5036
- C:\Windows\SYSTEM32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe"
  2⤵
  - Views/modifies file attributes
  PID:1356
- 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:3660
- 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:3048
- 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:3192
- 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:1664
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:4420
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:1668
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:3736
- 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:4068
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:3196
- 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:5072
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - Runs ping.exe
    PID:2456

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
77d622bb1a5b250869a3238b9bc1402b

SHA1
d47f4003c2554b9dfc4c16f22460b331886b191b

SHA256
f97ff12a8abf4bf88bb6497bd2ac2da12628c8847a8ba5a9026bdbb76507cdfb

SHA512
d6789b5499f23c9035375a102271e17a8a82e57d6f5312fa24242e08a83efdeb8becb7622f55c4cf1b89c7d864b445df11f4d994cf7e2f87a900535bcca12fd9

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

Filesize
948B

MD5
17d8127be94d3c1b6fcc9a4ed585003e

SHA1
789874fcc7c778c723f3e89822d8cc8750c6c4c8

SHA256
ea357ad1f95863b3618d31e5b0f90495331f64de2b784d9e185b48668c937a7b

SHA512
bb18b6d07d82227f5cfbe3eb460df79ec892c560ad2964dcd4782aa26336ae15059843bf46a739bdd4a4daa58057f99102531a756a1cf434ce6449b3cd35a98e

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
7511c81925750deb7ad1b9b80eea8a8d

SHA1
6ea759b3cbd243ae11435c6d6c5ced185eb01f49

SHA256
5b49723a7773f2fe1f6093236e7b9b2c546f0873635d02346cb39535811234fa

SHA512
5f7e69316d39525d137a7a833f8c746ceef8f1b2295348393fb3244cca8b962fbaad0f7da49da453fe97e2c49b1f41f06138111ac5ff97fdc33c300350ec3a1b

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_mmp3tfga.jm3.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/3660-4-0x00007FF9483E0000-0x00007FF948EA1000-memory.dmp

Filesize
10.8MB

Download
memory/3660-10-0x000002681EC80000-0x000002681ECA2000-memory.dmp

Filesize
136KB

Download
memory/3660-15-0x00007FF9483E0000-0x00007FF948EA1000-memory.dmp

Filesize
10.8MB

Download
memory/3660-18-0x00007FF9483E0000-0x00007FF948EA1000-memory.dmp

Filesize
10.8MB

Download
memory/3660-3-0x00007FF9483E0000-0x00007FF948EA1000-memory.dmp

Filesize
10.8MB

Download
memory/4940-34-0x0000015B0B7D0000-0x0000015B0B820000-memory.dmp

Filesize
320KB

Download
memory/4940-33-0x0000015B24050000-0x0000015B240C6000-memory.dmp

Filesize
472KB

Download
memory/4940-35-0x0000015B0B780000-0x0000015B0B79E000-memory.dmp

Filesize
120KB

Download
memory/4940-1-0x00007FF9483E3000-0x00007FF9483E5000-memory.dmp

Filesize
8KB

Download
memory/4940-0-0x0000015B099D0000-0x0000015B09A10000-memory.dmp

Filesize
256KB

Download
memory/4940-72-0x0000015B0B820000-0x0000015B0B832000-memory.dmp

Filesize
72KB

Download
memory/4940-71-0x0000015B0B7A0000-0x0000015B0B7AA000-memory.dmp

Filesize
40KB

Download
memory/4940-2-0x00007FF9483E0000-0x00007FF948EA1000-memory.dmp

Filesize
10.8MB

Download
memory/4940-90-0x00007FF9483E0000-0x00007FF948EA1000-memory.dmp

Filesize
10.8MB

Download