umbral | 14f51104e5d051531a6595a252534efc706dc77269d1f1cec686863f9d3ca115

Analysis

max time kernel
299s
max time network
127s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260911-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
07/10/2026, 19:26

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General

Target
Grabber.exe
Size 233KB
Sample261007-x5srfady21
SHA256 14f51104e5d051531a6595a252534efc706dc77269d1f1cec686863f9d3ca115
MD5 267bdbb28941ce1c474049964d43dcdc
SHA1 4ee9a8042188754da665a0a3035c73c26f91ccf1
SHA512 0c9a09701a4e78df7d5a429a035d591eb5462633aadd12ee2335aa4ef6e05d2c6a68f278790f3352f4917da707baa2eb0cdb14c9b5396c7791f32f3bdabf63e8
SSDEEP 6144:6DpjcgHgo3CSGwXDyoDhyiDcNdQGIxFYX+x6IE8e3OpH8:ajcgHSSfX2JbOq
TLSH
T177347D2523B8CB23F25F9FBE95B0055FCB71A207E90BF78E1C88A5E92416741E809D57
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

discovery umbral stealer

Malware Config

Signatures

Family: Umbral
Umbral stealer is an open-source modular stealer written in C#.
stealer umbral

Detects Umbral payload 1 IoCs

resource	yara_rule
behavioral2/memory/944-1-0x000001E67F7C0000-0x000001E67F800000-memory.dmp	family_umbral_obfuscated

Looks up external IP address via web service 1 TTPs 1 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

discovery

Internet Connection Discovery

T1016.001

flow	ioc
1	ip-api.com

Queries system WMI classes for hardware identifiers 2 TTPs 1 IoCs

Uses WMI to read hardware serial numbers or the system UUID, commonly used to fingerprint the victim machine.

discovery

System Information Discovery

T1082

Windows Management Instrumentation

T1047

pid	Process
4716	wmic.exe

Reads the TCP/IP host and domain name from the registry 1 TTPs 4 IoCs

The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.

discovery

System Network Configuration Discovery

T1016

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Domain	Grabber.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Hostname	Grabber.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Hostname	wmic.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Domain	wmic.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
4716	wmic.exe
4716	wmic.exe
4716	wmic.exe
4716	wmic.exe

Suspicious use of AdjustPrivilegeToken 43 IoCs

description	pid	Process
Token: SeDebugPrivilege	944	Grabber.exe
Token: SeIncreaseQuotaPrivilege	4716	wmic.exe
Token: SeSecurityPrivilege	4716	wmic.exe
Token: SeTakeOwnershipPrivilege	4716	wmic.exe
Token: SeLoadDriverPrivilege	4716	wmic.exe
Token: SeSystemProfilePrivilege	4716	wmic.exe
Token: SeSystemtimePrivilege	4716	wmic.exe
Token: SeProfSingleProcessPrivilege	4716	wmic.exe
Token: SeIncBasePriorityPrivilege	4716	wmic.exe
Token: SeCreatePagefilePrivilege	4716	wmic.exe
Token: SeBackupPrivilege	4716	wmic.exe
Token: SeRestorePrivilege	4716	wmic.exe
Token: SeShutdownPrivilege	4716	wmic.exe
Token: SeDebugPrivilege	4716	wmic.exe
Token: SeSystemEnvironmentPrivilege	4716	wmic.exe
Token: SeRemoteShutdownPrivilege	4716	wmic.exe
Token: SeUndockPrivilege	4716	wmic.exe
Token: SeManageVolumePrivilege	4716	wmic.exe
Token: 33	4716	wmic.exe
Token: 34	4716	wmic.exe
Token: 35	4716	wmic.exe
Token: 36	4716	wmic.exe
Token: SeIncreaseQuotaPrivilege	4716	wmic.exe
Token: SeSecurityPrivilege	4716	wmic.exe
Token: SeTakeOwnershipPrivilege	4716	wmic.exe
Token: SeLoadDriverPrivilege	4716	wmic.exe
Token: SeSystemProfilePrivilege	4716	wmic.exe
Token: SeSystemtimePrivilege	4716	wmic.exe
Token: SeProfSingleProcessPrivilege	4716	wmic.exe
Token: SeIncBasePriorityPrivilege	4716	wmic.exe
Token: SeCreatePagefilePrivilege	4716	wmic.exe
Token: SeBackupPrivilege	4716	wmic.exe
Token: SeRestorePrivilege	4716	wmic.exe
Token: SeShutdownPrivilege	4716	wmic.exe
Token: SeDebugPrivilege	4716	wmic.exe
Token: SeSystemEnvironmentPrivilege	4716	wmic.exe
Token: SeRemoteShutdownPrivilege	4716	wmic.exe
Token: SeUndockPrivilege	4716	wmic.exe
Token: SeManageVolumePrivilege	4716	wmic.exe
Token: 33	4716	wmic.exe
Token: 34	4716	wmic.exe
Token: 35	4716	wmic.exe
Token: 36	4716	wmic.exe

Suspicious use of WriteProcessMemory 1 IoCs

description	pid	Process	procid_target
PID 944 wrote to memory of 4716	944	Grabber.exe	89

C:\Users\Admin\AppData\Local\Temp\Grabber.exe
"C:\Users\Admin\AppData\Local\Temp\Grabber.exe"
1⤵
- Reads the TCP/IP host and domain name from the registry
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:944
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Queries system WMI classes for hardware identifiers
  - Reads the TCP/IP host and domain name from the registry
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4716

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Windows Management Instrumentation

T1047

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

System Network Configuration Discovery

T1016

Internet Connection Discovery

T1016.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/944-0-0x00007FFF9265F000-0x00007FFF92660000-memory.dmp

Download

memory/944-1-0x000001E67F7C0000-0x000001E67F800000-memory.dmp

Download

memory/944-2-0x00007FFF924D0000-0x00007FFF92E74000-memory.dmp

Download

memory/944-3-0x00007FFF924D0000-0x00007FFF92E74000-memory.dmp

Download

memory/944-4-0x00007FFF924D0000-0x00007FFF92E74000-memory.dmp

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memory/944-5-0x00007FFF924D0000-0x00007FFF92E74000-memory.dmp

Download

memory/944-6-0x00007FFF924D0000-0x00007FFF92E74000-memory.dmp

Download

memory/944-7-0x00007FFF924D0000-0x00007FFF92E74000-memory.dmp

Download