stealc | 5aa99418b597f6c27c343e8031e25bd73116bb3cc888cc0cd25d62c88126c974

General

Target

5aa99418b597f6c27c343e8031e25bd73116bb3cc888cc0cd25d62c88126c974.exe
Size

1.8MB
MD5

12a126af335a3bc2453be8a0849728a9
SHA1

da47f06653a3bc1ac6a87b321bfec96ea0046c99
SHA256

5aa99418b597f6c27c343e8031e25bd73116bb3cc888cc0cd25d62c88126c974
SHA512

cb6683a0667961390742e6ae4cc218450ad5d546c75a59d69f6396f7d2f025e62108c810880206a392d47d1e99dc19361cb4ba1b086971a8da7a27fe7e1c8f65
SSDEEP

49152:UT/E1oUINCxvAuIeUQVxB0jZZZHVpOgdF8/vw:uc1dINCwejJ0jZZtVJdy

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__	5aa99418b597f6c27c343e8031e25bd73116bb3cc888cc0cd25d62c88126c974.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	5aa99418b597f6c27c343e8031e25bd73116bb3cc888cc0cd25d62c88126c974.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	5aa99418b597f6c27c343e8031e25bd73116bb3cc888cc0cd25d62c88126c974.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-1-5-21-70482961-775596374-3727440602-1000\Software\Wine	5aa99418b597f6c27c343e8031e25bd73116bb3cc888cc0cd25d62c88126c974.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
4720	5aa99418b597f6c27c343e8031e25bd73116bb3cc888cc0cd25d62c88126c974.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
5092	4720	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	5aa99418b597f6c27c343e8031e25bd73116bb3cc888cc0cd25d62c88126c974.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	5aa99418b597f6c27c343e8031e25bd73116bb3cc888cc0cd25d62c88126c974.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	5aa99418b597f6c27c343e8031e25bd73116bb3cc888cc0cd25d62c88126c974.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
4720	5aa99418b597f6c27c343e8031e25bd73116bb3cc888cc0cd25d62c88126c974.exe
4720	5aa99418b597f6c27c343e8031e25bd73116bb3cc888cc0cd25d62c88126c974.exe
4720	5aa99418b597f6c27c343e8031e25bd73116bb3cc888cc0cd25d62c88126c974.exe
4720	5aa99418b597f6c27c343e8031e25bd73116bb3cc888cc0cd25d62c88126c974.exe

C:\Users\Admin\AppData\Local\Temp\5aa99418b597f6c27c343e8031e25bd73116bb3cc888cc0cd25d62c88126c974.exe
"C:\Users\Admin\AppData\Local\Temp\5aa99418b597f6c27c343e8031e25bd73116bb3cc888cc0cd25d62c88126c974.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:4720
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4720 -s 1484
  2⤵
  - Program crash
  PID:5092

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4720 -ip 4720
1⤵
PID:1368

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/4720-0-0x0000000000920000-0x0000000000FD9000-memory.dmp

Filesize
6.7MB

Download
memory/4720-1-0x0000000077B44000-0x0000000077B46000-memory.dmp

Filesize
8KB

Download
memory/4720-2-0x0000000000921000-0x0000000000938000-memory.dmp

Filesize
92KB

Download
memory/4720-3-0x0000000000920000-0x0000000000FD9000-memory.dmp

Filesize
6.7MB

Download
memory/4720-4-0x0000000000920000-0x0000000000FD9000-memory.dmp

Filesize
6.7MB

Download
memory/4720-5-0x0000000000920000-0x0000000000FD9000-memory.dmp

Filesize
6.7MB

Download
memory/4720-6-0x0000000000920000-0x0000000000FD9000-memory.dmp

Filesize
6.7MB

Download
memory/4720-7-0x0000000000920000-0x0000000000FD9000-memory.dmp

Filesize
6.7MB

Download
memory/4720-8-0x0000000000920000-0x0000000000FD9000-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