stealc | afc205fefcb583b92ad34a64c11a70f9217ee3fb0bccb86f46e11ff321b7d427

General

Target

afc205fefcb583b92ad34a64c11a70f9217ee3fb0bccb86f46e11ff321b7d427.exe
Size

1.7MB
MD5

e299ed671fef8b4f631edd45a3ad4d1b
SHA1

d7c7cf923dc0bc92d38abeefec2bae9add3c8fb9
SHA256

afc205fefcb583b92ad34a64c11a70f9217ee3fb0bccb86f46e11ff321b7d427
SHA512

a644024e8241f0af38ecf39f852e0844d5ccf6c29690fc484f531ce3a520c1aeacd329630c3ad39b45ee90750bb540ad2ab12e743f2f7483494b929f1706adb2
SSDEEP

49152:pBPfkWbJu3WH/9hPQn4FpXmm4Y1Kf9LP77kbwy:D9bJu4324FpRY9vkbZ

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__	afc205fefcb583b92ad34a64c11a70f9217ee3fb0bccb86f46e11ff321b7d427.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	afc205fefcb583b92ad34a64c11a70f9217ee3fb0bccb86f46e11ff321b7d427.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	afc205fefcb583b92ad34a64c11a70f9217ee3fb0bccb86f46e11ff321b7d427.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-1-5-21-493223053-2004649691-1575712786-1000\Software\Wine	afc205fefcb583b92ad34a64c11a70f9217ee3fb0bccb86f46e11ff321b7d427.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
3108	afc205fefcb583b92ad34a64c11a70f9217ee3fb0bccb86f46e11ff321b7d427.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1668	3108	WerFault.exe	82

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	afc205fefcb583b92ad34a64c11a70f9217ee3fb0bccb86f46e11ff321b7d427.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	afc205fefcb583b92ad34a64c11a70f9217ee3fb0bccb86f46e11ff321b7d427.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	afc205fefcb583b92ad34a64c11a70f9217ee3fb0bccb86f46e11ff321b7d427.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
3108	afc205fefcb583b92ad34a64c11a70f9217ee3fb0bccb86f46e11ff321b7d427.exe
3108	afc205fefcb583b92ad34a64c11a70f9217ee3fb0bccb86f46e11ff321b7d427.exe
3108	afc205fefcb583b92ad34a64c11a70f9217ee3fb0bccb86f46e11ff321b7d427.exe
3108	afc205fefcb583b92ad34a64c11a70f9217ee3fb0bccb86f46e11ff321b7d427.exe

C:\Users\Admin\AppData\Local\Temp\afc205fefcb583b92ad34a64c11a70f9217ee3fb0bccb86f46e11ff321b7d427.exe
"C:\Users\Admin\AppData\Local\Temp\afc205fefcb583b92ad34a64c11a70f9217ee3fb0bccb86f46e11ff321b7d427.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:3108
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3108 -s 1484
  2⤵
  - Program crash
  PID:1668

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 3108 -ip 3108
1⤵
PID:1524

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/3108-0-0x0000000000590000-0x0000000000C2A000-memory.dmp

Filesize
6.6MB

Download
memory/3108-1-0x0000000077074000-0x0000000077076000-memory.dmp

Filesize
8KB

Download
memory/3108-2-0x0000000000591000-0x00000000005A8000-memory.dmp

Filesize
92KB

Download
memory/3108-3-0x0000000000590000-0x0000000000C2A000-memory.dmp

Filesize
6.6MB

Download
memory/3108-4-0x0000000000590000-0x0000000000C2A000-memory.dmp

Filesize
6.6MB

Download
memory/3108-5-0x0000000000590000-0x0000000000C2A000-memory.dmp

Filesize
6.6MB

Download
memory/3108-6-0x0000000000590000-0x0000000000C2A000-memory.dmp

Filesize
6.6MB

Download
memory/3108-7-0x0000000000590000-0x0000000000C2A000-memory.dmp

Filesize
6.6MB

Download
memory/3108-8-0x0000000000590000-0x0000000000C2A000-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