stealc | b7828dd79ba9edc79def290472e98857282a314ecd3dc30f5a050749a6a47227

General

Target

b7828dd79ba9edc79def290472e98857282a314ecd3dc30f5a050749a6a47227.exe
Size

2.7MB
MD5

32002d72d0769b00500155759da96aae
SHA1

9e00292c00b1551a6d4120005c2e09065fd58b08
SHA256

b7828dd79ba9edc79def290472e98857282a314ecd3dc30f5a050749a6a47227
SHA512

56b25fa079232a59937e81fc9767db953122da2025d9f856c4c7f38a7a78a5ff27215d047e7bbf87c97f645a4153abd53f4c8375f0d7c36e8c0e1ae2f975fed6
SSDEEP

24576:Pyqj5+Wi9RTts97v12lTgYMqaHh/L6kQoNBkyPRQASVYLNrmktkj/AmTG7A3Vc4B:Py25+rT8hznyYCAfAeanR/Nh4NsjNc

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__	b7828dd79ba9edc79def290472e98857282a314ecd3dc30f5a050749a6a47227.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	b7828dd79ba9edc79def290472e98857282a314ecd3dc30f5a050749a6a47227.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	b7828dd79ba9edc79def290472e98857282a314ecd3dc30f5a050749a6a47227.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-1-5-21-3692679935-4019334568-335155002-1000\Software\Wine	b7828dd79ba9edc79def290472e98857282a314ecd3dc30f5a050749a6a47227.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
2172	b7828dd79ba9edc79def290472e98857282a314ecd3dc30f5a050749a6a47227.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
432	2172	WerFault.exe	28

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	b7828dd79ba9edc79def290472e98857282a314ecd3dc30f5a050749a6a47227.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	b7828dd79ba9edc79def290472e98857282a314ecd3dc30f5a050749a6a47227.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	b7828dd79ba9edc79def290472e98857282a314ecd3dc30f5a050749a6a47227.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2172	b7828dd79ba9edc79def290472e98857282a314ecd3dc30f5a050749a6a47227.exe
2172	b7828dd79ba9edc79def290472e98857282a314ecd3dc30f5a050749a6a47227.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2172 wrote to memory of 432	2172	b7828dd79ba9edc79def290472e98857282a314ecd3dc30f5a050749a6a47227.exe	30
PID 2172 wrote to memory of 432	2172	b7828dd79ba9edc79def290472e98857282a314ecd3dc30f5a050749a6a47227.exe	30
PID 2172 wrote to memory of 432	2172	b7828dd79ba9edc79def290472e98857282a314ecd3dc30f5a050749a6a47227.exe	30
PID 2172 wrote to memory of 432	2172	b7828dd79ba9edc79def290472e98857282a314ecd3dc30f5a050749a6a47227.exe	30

C:\Users\Admin\AppData\Local\Temp\b7828dd79ba9edc79def290472e98857282a314ecd3dc30f5a050749a6a47227.exe
"C:\Users\Admin\AppData\Local\Temp\b7828dd79ba9edc79def290472e98857282a314ecd3dc30f5a050749a6a47227.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:2172
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2172 -s 432
  2⤵
  - Program crash
  PID:432

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/2172-0-0x0000000000E00000-0x00000000012F2000-memory.dmp

Filesize
4.9MB

Download
memory/2172-1-0x0000000077500000-0x0000000077502000-memory.dmp

Filesize
8KB

Download
memory/2172-2-0x0000000000E01000-0x0000000000E18000-memory.dmp

Filesize
92KB

Download
memory/2172-3-0x0000000000E00000-0x00000000012F2000-memory.dmp

Filesize
4.9MB

Download
memory/2172-4-0x0000000000E00000-0x00000000012F2000-memory.dmp

Filesize
4.9MB

Download
memory/2172-5-0x0000000000E00000-0x00000000012F2000-memory.dmp

Filesize
4.9MB

Download
memory/2172-6-0x0000000000E00000-0x00000000012F2000-memory.dmp

Filesize
4.9MB

Download
memory/2172-7-0x0000000000E00000-0x00000000012F2000-memory.dmp

Filesize
4.9MB

Download
memory/2172-8-0x0000000000E00000-0x00000000012F2000-memory.dmp

Filesize
4.9MB

Download
memory/2172-9-0x0000000000E00000-0x00000000012F2000-memory.dmp

Filesize
4.9MB

Download
memory/2172-10-0x0000000000E00000-0x00000000012F2000-memory.dmp

Filesize
4.9MB

Download
memory/2172-11-0x0000000000E00000-0x00000000012F2000-memory.dmp

Filesize
4.9MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads