stealc | 98f78ba173d498f1e7c8bbcf19245116a56cfbe1006781e1338600eeaf703745

General

Target

98f78ba173d498f1e7c8bbcf19245116a56cfbe1006781e1338600eeaf703745.exe
Size

1.7MB
MD5

757a6c1330f4cf6d612fd8b7845e66ba
SHA1

8004de93c6870ccdf4b02e9428803143bf3cb75a
SHA256

98f78ba173d498f1e7c8bbcf19245116a56cfbe1006781e1338600eeaf703745
SHA512

8f5d39d6d6beca8378d85258acb3b2b93e33dbfc882aa21ba41ed9dc0cbe208c417177b9dc4a19b156c3c4c802624e879cd40bb4c02e31dd42c931db4796dde4
SSDEEP

49152:a2IWo7WUnkk35KxTK0nkFLgKu9R+l0gSHj:NIWlUH5K1t7bPNgS

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__	98f78ba173d498f1e7c8bbcf19245116a56cfbe1006781e1338600eeaf703745.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\VideoBiosVersion	98f78ba173d498f1e7c8bbcf19245116a56cfbe1006781e1338600eeaf703745.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	98f78ba173d498f1e7c8bbcf19245116a56cfbe1006781e1338600eeaf703745.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-1-5-21-3442511616-637977696-3186306149-1000\Software\Wine	98f78ba173d498f1e7c8bbcf19245116a56cfbe1006781e1338600eeaf703745.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
4892	98f78ba173d498f1e7c8bbcf19245116a56cfbe1006781e1338600eeaf703745.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2656	4892	WerFault.exe	81

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	98f78ba173d498f1e7c8bbcf19245116a56cfbe1006781e1338600eeaf703745.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 opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	98f78ba173d498f1e7c8bbcf19245116a56cfbe1006781e1338600eeaf703745.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	98f78ba173d498f1e7c8bbcf19245116a56cfbe1006781e1338600eeaf703745.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
4892	98f78ba173d498f1e7c8bbcf19245116a56cfbe1006781e1338600eeaf703745.exe
4892	98f78ba173d498f1e7c8bbcf19245116a56cfbe1006781e1338600eeaf703745.exe
4892	98f78ba173d498f1e7c8bbcf19245116a56cfbe1006781e1338600eeaf703745.exe
4892	98f78ba173d498f1e7c8bbcf19245116a56cfbe1006781e1338600eeaf703745.exe

C:\Users\Admin\AppData\Local\Temp\98f78ba173d498f1e7c8bbcf19245116a56cfbe1006781e1338600eeaf703745.exe
"C:\Users\Admin\AppData\Local\Temp\98f78ba173d498f1e7c8bbcf19245116a56cfbe1006781e1338600eeaf703745.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
PID:4892
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4892 -s 1480
  2⤵
  - Program crash
  PID:2656

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 376 -p 4892 -ip 4892
1⤵
PID:3548

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/4892-0-0x0000000000580000-0x0000000000C1A000-memory.dmp

Filesize
6.6MB

Download
memory/4892-1-0x0000000077194000-0x0000000077196000-memory.dmp

Filesize
8KB

Download
memory/4892-2-0x0000000000581000-0x0000000000598000-memory.dmp

Filesize
92KB

Download
memory/4892-3-0x0000000000580000-0x0000000000C1A000-memory.dmp

Filesize
6.6MB

Download
memory/4892-4-0x0000000000580000-0x0000000000C1A000-memory.dmp

Filesize
6.6MB

Download
memory/4892-5-0x0000000000580000-0x0000000000C1A000-memory.dmp

Filesize
6.6MB

Download
memory/4892-6-0x0000000000580000-0x0000000000C1A000-memory.dmp

Filesize
6.6MB

Download
memory/4892-7-0x0000000000580000-0x0000000000C1A000-memory.dmp

Filesize
6.6MB

Download
memory/4892-8-0x0000000000580000-0x0000000000C1A000-memory.dmp

Filesize
6.6MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads