stealc | 12155b640cfbf5e91481bec6837cc532227488a45625dee25db74a2d8d4e33c8

General

Target

12155b640cfbf5e91481bec6837cc532227488a45625dee25db74a2d8d4e33c8.exe
Size

1.7MB
MD5

f27e8de2c223f4f3a65897edb02b418d
SHA1

fba65a32b91e645dd9ceec6de97e27de427c3e9d
SHA256

12155b640cfbf5e91481bec6837cc532227488a45625dee25db74a2d8d4e33c8
SHA512

48c899bc0eb401cabf669feb857d1f45862a9b66de9b7f55374d8f6dbf16eec85d069dd060ce3af3643a3d914fed577c5878037a9379f1a6e9573e0ef84366f8
SSDEEP

49152:mvizimrTm2jViFazo587i6d1J7oOL/IR:mvizDNZBoud11o6g

Score

10^/10

stealc kira defense_evasion discovery stealer

Malware Config

Extracted

Family

stealc

Botnet

kira

C2

http://185.215.113.115

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__	12155b640cfbf5e91481bec6837cc532227488a45625dee25db74a2d8d4e33c8.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	12155b640cfbf5e91481bec6837cc532227488a45625dee25db74a2d8d4e33c8.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	12155b640cfbf5e91481bec6837cc532227488a45625dee25db74a2d8d4e33c8.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	12155b640cfbf5e91481bec6837cc532227488a45625dee25db74a2d8d4e33c8.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
2752	12155b640cfbf5e91481bec6837cc532227488a45625dee25db74a2d8d4e33c8.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1876	2752	WerFault.exe	30

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	12155b640cfbf5e91481bec6837cc532227488a45625dee25db74a2d8d4e33c8.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	12155b640cfbf5e91481bec6837cc532227488a45625dee25db74a2d8d4e33c8.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	12155b640cfbf5e91481bec6837cc532227488a45625dee25db74a2d8d4e33c8.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2752	12155b640cfbf5e91481bec6837cc532227488a45625dee25db74a2d8d4e33c8.exe
2752	12155b640cfbf5e91481bec6837cc532227488a45625dee25db74a2d8d4e33c8.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2752 wrote to memory of 1876	2752	12155b640cfbf5e91481bec6837cc532227488a45625dee25db74a2d8d4e33c8.exe	32
PID 2752 wrote to memory of 1876	2752	12155b640cfbf5e91481bec6837cc532227488a45625dee25db74a2d8d4e33c8.exe	32
PID 2752 wrote to memory of 1876	2752	12155b640cfbf5e91481bec6837cc532227488a45625dee25db74a2d8d4e33c8.exe	32
PID 2752 wrote to memory of 1876	2752	12155b640cfbf5e91481bec6837cc532227488a45625dee25db74a2d8d4e33c8.exe	32

C:\Users\Admin\AppData\Local\Temp\12155b640cfbf5e91481bec6837cc532227488a45625dee25db74a2d8d4e33c8.exe
"C:\Users\Admin\AppData\Local\Temp\12155b640cfbf5e91481bec6837cc532227488a45625dee25db74a2d8d4e33c8.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:2752
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2752 -s 928
  2⤵
  - Program crash
  PID:1876

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/2752-0-0x00000000001D0000-0x0000000000867000-memory.dmp

Filesize
6.6MB

Download
memory/2752-1-0x0000000077D00000-0x0000000077D02000-memory.dmp

Filesize
8KB

Download
memory/2752-2-0x00000000001D1000-0x00000000001E8000-memory.dmp

Filesize
92KB

Download
memory/2752-3-0x00000000001D0000-0x0000000000867000-memory.dmp

Filesize
6.6MB

Download
memory/2752-4-0x00000000001D0000-0x0000000000867000-memory.dmp

Filesize
6.6MB

Download
memory/2752-5-0x00000000001D0000-0x0000000000867000-memory.dmp

Filesize
6.6MB

Download
memory/2752-6-0x00000000001D0000-0x0000000000867000-memory.dmp

Filesize
6.6MB

Download
memory/2752-7-0x00000000001D0000-0x0000000000867000-memory.dmp

Filesize
6.6MB

Download
memory/2752-8-0x00000000001D0000-0x0000000000867000-memory.dmp

Filesize
6.6MB

Download
memory/2752-9-0x00000000001D0000-0x0000000000867000-memory.dmp

Filesize
6.6MB

Download
memory/2752-10-0x00000000001D0000-0x0000000000867000-memory.dmp

Filesize
6.6MB

Download
memory/2752-11-0x00000000001D0000-0x0000000000867000-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