stealc | 5aa99418b597f6c27c343e8031e25bd73116bb3cc888cc0cd25d62c88126c974

General

Target

random.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__	random.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	random.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	random.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-1-5-21-3533259084-2542256011-65585152-1000\Software\Wine	random.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
2376	random.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2232	2376	WerFault.exe	29

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

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2376	random.exe
2376	random.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2376 wrote to memory of 2232	2376	random.exe	32
PID 2376 wrote to memory of 2232	2376	random.exe	32
PID 2376 wrote to memory of 2232	2376	random.exe	32
PID 2376 wrote to memory of 2232	2376	random.exe	32

C:\Users\Admin\AppData\Local\Temp\random.exe
"C:\Users\Admin\AppData\Local\Temp\random.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:2376
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2376 -s 924
  2⤵
  - Program crash
  PID:2232

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/2376-0-0x00000000002D0000-0x0000000000989000-memory.dmp

Filesize
6.7MB

Download
memory/2376-1-0x0000000076EC0000-0x0000000076EC2000-memory.dmp

Filesize
8KB

Download
memory/2376-2-0x00000000002D1000-0x00000000002E8000-memory.dmp

Filesize
92KB

Download
memory/2376-3-0x00000000002D0000-0x0000000000989000-memory.dmp

Filesize
6.7MB

Download
memory/2376-4-0x00000000002D0000-0x0000000000989000-memory.dmp

Filesize
6.7MB

Download
memory/2376-5-0x00000000002D0000-0x0000000000989000-memory.dmp

Filesize
6.7MB

Download
memory/2376-6-0x00000000002D0000-0x0000000000989000-memory.dmp

Filesize
6.7MB

Download
memory/2376-7-0x00000000002D0000-0x0000000000989000-memory.dmp

Filesize
6.7MB

Download
memory/2376-8-0x00000000002D0000-0x0000000000989000-memory.dmp

Filesize
6.7MB

Download
memory/2376-9-0x00000000002D0000-0x0000000000989000-memory.dmp

Filesize
6.7MB

Download
memory/2376-10-0x00000000002D0000-0x0000000000989000-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