stealc | f13895a9f499d1c2783747f6f5c96ac690ff2423b1496cc86b6912c67a7cafd9

General

Target

f13895a9f499d1c2783747f6f5c96ac690ff2423b1496cc86b6912c67a7cafd9.exe
Size

1.7MB
MD5

07f4024a9ce4fa36d2ee6907ec0e827c
SHA1

772203f6cbf91f48e318d2b398b61e88b81a75c0
SHA256

f13895a9f499d1c2783747f6f5c96ac690ff2423b1496cc86b6912c67a7cafd9
SHA512

82e863a69f59c94137a43c2584f6b800430e0264fd293a05ab43eca4cdabc5b8ad29464dd5ca93282ff25cd17c90ee6188c63f2e9f378b72426970713d5f97c4
SSDEEP

24576:ryEq0KD5TRjAY46tFYBmY8GrqA1095RbqNlf9PdnDy60AwVzRoSh5FmBzE1rr6lg:lKD5TKwtF9A1095RGl7zwPcBwWl0Uye

Score

10^/10

stealc brat defense_evasion discovery stealer

Malware Config

Extracted

Family

stealc

Botnet

brat

C2

http://185.215.113.206

Attributes

url_path
/c4becf79229cb002.php

Signatures

Stealc
Stealc is an infostealer written in C++.
stealer stealc
Stealc family
stealc

Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs

defense_evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	f13895a9f499d1c2783747f6f5c96ac690ff2423b1496cc86b6912c67a7cafd9.exe

Checks BIOS information in registry 2 TTPs 2 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	f13895a9f499d1c2783747f6f5c96ac690ff2423b1496cc86b6912c67a7cafd9.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	f13895a9f499d1c2783747f6f5c96ac690ff2423b1496cc86b6912c67a7cafd9.exe

Identifies Wine through registry keys 2 TTPs 1 IoCs

Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.

defense_evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000\Software\Wine	f13895a9f499d1c2783747f6f5c96ac690ff2423b1496cc86b6912c67a7cafd9.exe

Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
2840	f13895a9f499d1c2783747f6f5c96ac690ff2423b1496cc86b6912c67a7cafd9.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1496	2840	WerFault.exe	27

System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	f13895a9f499d1c2783747f6f5c96ac690ff2423b1496cc86b6912c67a7cafd9.exe

Checks processor information in registry 2 TTPs 2 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	f13895a9f499d1c2783747f6f5c96ac690ff2423b1496cc86b6912c67a7cafd9.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	f13895a9f499d1c2783747f6f5c96ac690ff2423b1496cc86b6912c67a7cafd9.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2840	f13895a9f499d1c2783747f6f5c96ac690ff2423b1496cc86b6912c67a7cafd9.exe
2840	f13895a9f499d1c2783747f6f5c96ac690ff2423b1496cc86b6912c67a7cafd9.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2840 wrote to memory of 1496	2840	f13895a9f499d1c2783747f6f5c96ac690ff2423b1496cc86b6912c67a7cafd9.exe	31
PID 2840 wrote to memory of 1496	2840	f13895a9f499d1c2783747f6f5c96ac690ff2423b1496cc86b6912c67a7cafd9.exe	31
PID 2840 wrote to memory of 1496	2840	f13895a9f499d1c2783747f6f5c96ac690ff2423b1496cc86b6912c67a7cafd9.exe	31
PID 2840 wrote to memory of 1496	2840	f13895a9f499d1c2783747f6f5c96ac690ff2423b1496cc86b6912c67a7cafd9.exe	31

C:\Users\Admin\AppData\Local\Temp\f13895a9f499d1c2783747f6f5c96ac690ff2423b1496cc86b6912c67a7cafd9.exe
"C:\Users\Admin\AppData\Local\Temp\f13895a9f499d1c2783747f6f5c96ac690ff2423b1496cc86b6912c67a7cafd9.exe"
1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Identifies Wine through registry keys
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2840
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2840 -s 932
  2⤵
  - Program crash
  PID:1496

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

2

T1497

Credential Access

Discovery

Query Registry

5

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Virtualization/Sandbox Evasion

2

T1497

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/2840-0-0x00000000011A0000-0x0000000001824000-memory.dmp

Filesize
6.5MB

Download
memory/2840-1-0x0000000077460000-0x0000000077462000-memory.dmp

Filesize
8KB

Download
memory/2840-2-0x00000000011A1000-0x00000000011B8000-memory.dmp

Filesize
92KB

Download
memory/2840-3-0x00000000011A0000-0x0000000001824000-memory.dmp

Filesize
6.5MB

Download
memory/2840-4-0x00000000011A0000-0x0000000001824000-memory.dmp

Filesize
6.5MB

Download
memory/2840-5-0x00000000011A0000-0x0000000001824000-memory.dmp

Filesize
6.5MB

Download
memory/2840-6-0x00000000011A0000-0x0000000001824000-memory.dmp

Filesize
6.5MB

Download
memory/2840-7-0x00000000011A0000-0x0000000001824000-memory.dmp

Filesize
6.5MB

Download
memory/2840-8-0x00000000011A0000-0x0000000001824000-memory.dmp

Filesize
6.5MB

Download
memory/2840-9-0x00000000011A0000-0x0000000001824000-memory.dmp

Filesize
6.5MB

Download
memory/2840-10-0x00000000011A0000-0x0000000001824000-memory.dmp

Filesize
6.5MB

Download
memory/2840-11-0x00000000011A0000-0x0000000001824000-memory.dmp

Filesize
6.5MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads