stealc | 787c4df8819b4b4b4bfb0125c2eb646b53044d63767e7a559ccae0ff0c23ecbb

General

Target

787c4df8819b4b4b4bfb0125c2eb646b53044d63767e7a559ccae0ff0c23ecbb.exe
Size

1.7MB
MD5

f58c08aad076c7a8d3fa2a7d0a92c85e
SHA1

e72b702775e1d0ea6a3f6ce353e171ebb8cb7104
SHA256

787c4df8819b4b4b4bfb0125c2eb646b53044d63767e7a559ccae0ff0c23ecbb
SHA512

f9217d0c95e6c54c6d980181537a0ec823fe0d4cb30cf0a24f2bd11fd6de30822a3c6c1f9b1f64d558aa0511f6e5f8240848923eaf68fb42ae7110c41b3b32c7
SSDEEP

49152:sVcCPFlobRSOt5ERYXIEtopIud31/JPTIK:sVcCPodSVRYYEtoSc1/BN

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__	787c4df8819b4b4b4bfb0125c2eb646b53044d63767e7a559ccae0ff0c23ecbb.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	787c4df8819b4b4b4bfb0125c2eb646b53044d63767e7a559ccae0ff0c23ecbb.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	787c4df8819b4b4b4bfb0125c2eb646b53044d63767e7a559ccae0ff0c23ecbb.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-1-5-21-4089630652-1596403869-279772308-1000\Software\Wine	787c4df8819b4b4b4bfb0125c2eb646b53044d63767e7a559ccae0ff0c23ecbb.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
4612	787c4df8819b4b4b4bfb0125c2eb646b53044d63767e7a559ccae0ff0c23ecbb.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
3428	4612	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	787c4df8819b4b4b4bfb0125c2eb646b53044d63767e7a559ccae0ff0c23ecbb.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	787c4df8819b4b4b4bfb0125c2eb646b53044d63767e7a559ccae0ff0c23ecbb.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	787c4df8819b4b4b4bfb0125c2eb646b53044d63767e7a559ccae0ff0c23ecbb.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
4612	787c4df8819b4b4b4bfb0125c2eb646b53044d63767e7a559ccae0ff0c23ecbb.exe
4612	787c4df8819b4b4b4bfb0125c2eb646b53044d63767e7a559ccae0ff0c23ecbb.exe
4612	787c4df8819b4b4b4bfb0125c2eb646b53044d63767e7a559ccae0ff0c23ecbb.exe
4612	787c4df8819b4b4b4bfb0125c2eb646b53044d63767e7a559ccae0ff0c23ecbb.exe

C:\Users\Admin\AppData\Local\Temp\787c4df8819b4b4b4bfb0125c2eb646b53044d63767e7a559ccae0ff0c23ecbb.exe
"C:\Users\Admin\AppData\Local\Temp\787c4df8819b4b4b4bfb0125c2eb646b53044d63767e7a559ccae0ff0c23ecbb.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:4612
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4612 -s 1472
  2⤵
  - Program crash
  PID:3428

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 4612 -ip 4612
1⤵
PID:3236

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/4612-0-0x0000000000760000-0x0000000000DF2000-memory.dmp

Filesize
6.6MB

Download
memory/4612-1-0x0000000076FA4000-0x0000000076FA6000-memory.dmp

Filesize
8KB

Download
memory/4612-2-0x0000000000761000-0x0000000000778000-memory.dmp

Filesize
92KB

Download
memory/4612-3-0x0000000000760000-0x0000000000DF2000-memory.dmp

Filesize
6.6MB

Download
memory/4612-4-0x0000000000760000-0x0000000000DF2000-memory.dmp

Filesize
6.6MB

Download
memory/4612-5-0x0000000000760000-0x0000000000DF2000-memory.dmp

Filesize
6.6MB

Download
memory/4612-6-0x0000000000760000-0x0000000000DF2000-memory.dmp

Filesize
6.6MB

Download
memory/4612-7-0x0000000000760000-0x0000000000DF2000-memory.dmp

Filesize
6.6MB

Download
memory/4612-9-0x0000000000760000-0x0000000000DF2000-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