stealc | 921a1eb60814bf8cf2d99870e3ecfae2c3129f4476267328f8012e77589374cb

General

Target

921a1eb60814bf8cf2d99870e3ecfae2c3129f4476267328f8012e77589374cb.exe
Size

1.8MB
MD5

06fdcfeb366a23ab4d635e269a0fc181
SHA1

9d14d9158781d8b7a98acbe1038454ed1c647905
SHA256

921a1eb60814bf8cf2d99870e3ecfae2c3129f4476267328f8012e77589374cb
SHA512

ff15749f508b00cec309dbdd7b4ea514f71c85853e013b8fff408ed198418d28b43e0188144610b14e32780d5fd097d5a0eb435e8576e1f5e23e99438e306eaf
SSDEEP

49152:gpmFGY3ravO5n/dtOJPFfKswi4J+cjYJyRV:gpmFGY7llkVQ8CYJ2V

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__	921a1eb60814bf8cf2d99870e3ecfae2c3129f4476267328f8012e77589374cb.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	921a1eb60814bf8cf2d99870e3ecfae2c3129f4476267328f8012e77589374cb.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	921a1eb60814bf8cf2d99870e3ecfae2c3129f4476267328f8012e77589374cb.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-1-5-21-1488793075-819845221-1497111674-1000\Software\Wine	921a1eb60814bf8cf2d99870e3ecfae2c3129f4476267328f8012e77589374cb.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
2492	921a1eb60814bf8cf2d99870e3ecfae2c3129f4476267328f8012e77589374cb.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2568	2492	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	921a1eb60814bf8cf2d99870e3ecfae2c3129f4476267328f8012e77589374cb.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 value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	921a1eb60814bf8cf2d99870e3ecfae2c3129f4476267328f8012e77589374cb.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	921a1eb60814bf8cf2d99870e3ecfae2c3129f4476267328f8012e77589374cb.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2492	921a1eb60814bf8cf2d99870e3ecfae2c3129f4476267328f8012e77589374cb.exe
2492	921a1eb60814bf8cf2d99870e3ecfae2c3129f4476267328f8012e77589374cb.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2492 wrote to memory of 2568	2492	921a1eb60814bf8cf2d99870e3ecfae2c3129f4476267328f8012e77589374cb.exe	32
PID 2492 wrote to memory of 2568	2492	921a1eb60814bf8cf2d99870e3ecfae2c3129f4476267328f8012e77589374cb.exe	32
PID 2492 wrote to memory of 2568	2492	921a1eb60814bf8cf2d99870e3ecfae2c3129f4476267328f8012e77589374cb.exe	32
PID 2492 wrote to memory of 2568	2492	921a1eb60814bf8cf2d99870e3ecfae2c3129f4476267328f8012e77589374cb.exe	32

C:\Users\Admin\AppData\Local\Temp\921a1eb60814bf8cf2d99870e3ecfae2c3129f4476267328f8012e77589374cb.exe
"C:\Users\Admin\AppData\Local\Temp\921a1eb60814bf8cf2d99870e3ecfae2c3129f4476267328f8012e77589374cb.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:2492
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2492 -s 928
  2⤵
  - Program crash
  PID:2568

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/2492-0-0x00000000013A0000-0x0000000001A4A000-memory.dmp

Filesize
6.7MB

Download
memory/2492-1-0x0000000077550000-0x0000000077552000-memory.dmp

Filesize
8KB

Download
memory/2492-2-0x00000000013A1000-0x00000000013B8000-memory.dmp

Filesize
92KB

Download
memory/2492-3-0x00000000013A0000-0x0000000001A4A000-memory.dmp

Filesize
6.7MB

Download
memory/2492-4-0x00000000013A0000-0x0000000001A4A000-memory.dmp

Filesize
6.7MB

Download
memory/2492-5-0x00000000013A0000-0x0000000001A4A000-memory.dmp

Filesize
6.7MB

Download
memory/2492-6-0x00000000013A0000-0x0000000001A4A000-memory.dmp

Filesize
6.7MB

Download
memory/2492-7-0x00000000013A0000-0x0000000001A4A000-memory.dmp

Filesize
6.7MB

Download
memory/2492-8-0x00000000013A0000-0x0000000001A4A000-memory.dmp

Filesize
6.7MB

Download
memory/2492-9-0x00000000013A0000-0x0000000001A4A000-memory.dmp

Filesize
6.7MB

Download
memory/2492-10-0x00000000013A0000-0x0000000001A4A000-memory.dmp

Filesize
6.7MB

Download
memory/2492-11-0x00000000013A0000-0x0000000001A4A000-memory.dmp

Filesize
6.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads