stealc | 6f6fd4d2fc13cac3f98777556e3b67c6110c57b424fb2fba2adab3d02c310bff

General

Target

6f6fd4d2fc13cac3f98777556e3b67c6110c57b424fb2fba2adab3d02c310bff.exe
Size

4.9MB
MD5

e37e670d977ba920bc799ac6f7ce593c
SHA1

01bcfbcadbf5719a89e31f0ff19f706fdddc354d
SHA256

6f6fd4d2fc13cac3f98777556e3b67c6110c57b424fb2fba2adab3d02c310bff
SHA512

489fd761b4d2e223606a192ec3a9eebb19ca7b2fbe7504b9e41fc0ce2f409d50ac6d61608654b8c9e4fbdd4d26460b980d5ffda16c80f2c17d96b3c046f26bfd
SSDEEP

49152:cJ5VdusKdXxiTZqqJ0BSrXsR836ZLxjeWk9Q8YZA/:cJ57fMXxiTgq6BLO6Zxjxksq/

Score

10^/10

stealc stok discovery evasion stealer

Malware Config

Extracted

Family

stealc

Botnet

stok

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

evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	6f6fd4d2fc13cac3f98777556e3b67c6110c57b424fb2fba2adab3d02c310bff.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	6f6fd4d2fc13cac3f98777556e3b67c6110c57b424fb2fba2adab3d02c310bff.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	6f6fd4d2fc13cac3f98777556e3b67c6110c57b424fb2fba2adab3d02c310bff.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.

evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3063565911-2056067323-3330884624-1000\Software\Wine	6f6fd4d2fc13cac3f98777556e3b67c6110c57b424fb2fba2adab3d02c310bff.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
1580	6f6fd4d2fc13cac3f98777556e3b67c6110c57b424fb2fba2adab3d02c310bff.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1400	1580	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	6f6fd4d2fc13cac3f98777556e3b67c6110c57b424fb2fba2adab3d02c310bff.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	6f6fd4d2fc13cac3f98777556e3b67c6110c57b424fb2fba2adab3d02c310bff.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	6f6fd4d2fc13cac3f98777556e3b67c6110c57b424fb2fba2adab3d02c310bff.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1580	6f6fd4d2fc13cac3f98777556e3b67c6110c57b424fb2fba2adab3d02c310bff.exe
1580	6f6fd4d2fc13cac3f98777556e3b67c6110c57b424fb2fba2adab3d02c310bff.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1580 wrote to memory of 1400	1580	6f6fd4d2fc13cac3f98777556e3b67c6110c57b424fb2fba2adab3d02c310bff.exe	31
PID 1580 wrote to memory of 1400	1580	6f6fd4d2fc13cac3f98777556e3b67c6110c57b424fb2fba2adab3d02c310bff.exe	31
PID 1580 wrote to memory of 1400	1580	6f6fd4d2fc13cac3f98777556e3b67c6110c57b424fb2fba2adab3d02c310bff.exe	31
PID 1580 wrote to memory of 1400	1580	6f6fd4d2fc13cac3f98777556e3b67c6110c57b424fb2fba2adab3d02c310bff.exe	31

C:\Users\Admin\AppData\Local\Temp\6f6fd4d2fc13cac3f98777556e3b67c6110c57b424fb2fba2adab3d02c310bff.exe
"C:\Users\Admin\AppData\Local\Temp\6f6fd4d2fc13cac3f98777556e3b67c6110c57b424fb2fba2adab3d02c310bff.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:1580
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1580 -s 936
  2⤵
  - Program crash
  PID:1400

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

Replay Monitor

Loading Replay Monitor...

Downloads

memory/1580-0-0x00000000010D0000-0x00000000015BF000-memory.dmp

Filesize
4.9MB

Download
memory/1580-1-0x00000000771B0000-0x00000000771B2000-memory.dmp

Filesize
8KB

Download
memory/1580-2-0x00000000010D1000-0x000000000131A000-memory.dmp

Filesize
2.3MB

Download
memory/1580-3-0x00000000010D0000-0x00000000015BF000-memory.dmp

Filesize
4.9MB

Download
memory/1580-4-0x00000000010D0000-0x00000000015BF000-memory.dmp

Filesize
4.9MB

Download
memory/1580-5-0x00000000010D1000-0x000000000131A000-memory.dmp

Filesize
2.3MB

Download
memory/1580-6-0x00000000010D0000-0x00000000015BF000-memory.dmp

Filesize
4.9MB

Download
memory/1580-7-0x00000000010D0000-0x00000000015BF000-memory.dmp

Filesize
4.9MB

Download
memory/1580-8-0x00000000010D0000-0x00000000015BF000-memory.dmp

Filesize
4.9MB

Download
memory/1580-9-0x00000000010D0000-0x00000000015BF000-memory.dmp

Filesize
4.9MB

Download
memory/1580-10-0x00000000010D0000-0x00000000015BF000-memory.dmp

Filesize
4.9MB

Download
memory/1580-11-0x00000000010D0000-0x00000000015BF000-memory.dmp

Filesize
4.9MB

Download
memory/1580-12-0x00000000010D1000-0x000000000131A000-memory.dmp

Filesize
2.3MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads