stealc | 7ef6137bbfca134b6862db2ae7839ddd5b719e3c993128d62c583945d889cc18

General

Target

7ef6137bbfca134b6862db2ae7839ddd5b719e3c993128d62c583945d889cc18.exe
Size

4.9MB
MD5

0d3c68e3a36ec0ad7efa120a851b20b6
SHA1

fde9d96c268481e58146a8aac0003465c751bdf3
SHA256

7ef6137bbfca134b6862db2ae7839ddd5b719e3c993128d62c583945d889cc18
SHA512

7af5a4e2296224e670dbed1e2c3355da0830951b2cbdf5be41b9038888f8ad9d4d0f559f64aa3606f776a4ad46ead06ae6c93d971ecbd1996a203ed23dfdcff9
SSDEEP

49152:l9WkkKsI+h3cQmFRDL1F9waFQQCwjIqTN1TUSl:lAkkKsrcQm/n/WSQfwjIqjUU

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__	7ef6137bbfca134b6862db2ae7839ddd5b719e3c993128d62c583945d889cc18.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	7ef6137bbfca134b6862db2ae7839ddd5b719e3c993128d62c583945d889cc18.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	7ef6137bbfca134b6862db2ae7839ddd5b719e3c993128d62c583945d889cc18.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-1-5-21-3533259084-2542256011-65585152-1000\Software\Wine	7ef6137bbfca134b6862db2ae7839ddd5b719e3c993128d62c583945d889cc18.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
2496	7ef6137bbfca134b6862db2ae7839ddd5b719e3c993128d62c583945d889cc18.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2744	2496	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	7ef6137bbfca134b6862db2ae7839ddd5b719e3c993128d62c583945d889cc18.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	7ef6137bbfca134b6862db2ae7839ddd5b719e3c993128d62c583945d889cc18.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	7ef6137bbfca134b6862db2ae7839ddd5b719e3c993128d62c583945d889cc18.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2496	7ef6137bbfca134b6862db2ae7839ddd5b719e3c993128d62c583945d889cc18.exe
2496	7ef6137bbfca134b6862db2ae7839ddd5b719e3c993128d62c583945d889cc18.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2496 wrote to memory of 2744	2496	7ef6137bbfca134b6862db2ae7839ddd5b719e3c993128d62c583945d889cc18.exe	32
PID 2496 wrote to memory of 2744	2496	7ef6137bbfca134b6862db2ae7839ddd5b719e3c993128d62c583945d889cc18.exe	32
PID 2496 wrote to memory of 2744	2496	7ef6137bbfca134b6862db2ae7839ddd5b719e3c993128d62c583945d889cc18.exe	32
PID 2496 wrote to memory of 2744	2496	7ef6137bbfca134b6862db2ae7839ddd5b719e3c993128d62c583945d889cc18.exe	32

C:\Users\Admin\AppData\Local\Temp\7ef6137bbfca134b6862db2ae7839ddd5b719e3c993128d62c583945d889cc18.exe
"C:\Users\Admin\AppData\Local\Temp\7ef6137bbfca134b6862db2ae7839ddd5b719e3c993128d62c583945d889cc18.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:2496
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2496 -s 932
  2⤵
  - Program crash
  PID:2744

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/2496-0-0x0000000000F40000-0x0000000001431000-memory.dmp

Filesize
4.9MB

Download
memory/2496-1-0x00000000775B0000-0x00000000775B2000-memory.dmp

Filesize
8KB

Download
memory/2496-2-0x0000000000F41000-0x000000000118A000-memory.dmp

Filesize
2.3MB

Download
memory/2496-3-0x0000000000F40000-0x0000000001431000-memory.dmp

Filesize
4.9MB

Download
memory/2496-4-0x0000000000F40000-0x0000000001431000-memory.dmp

Filesize
4.9MB

Download
memory/2496-5-0x0000000000F41000-0x000000000118A000-memory.dmp

Filesize
2.3MB

Download
memory/2496-6-0x0000000000F40000-0x0000000001431000-memory.dmp

Filesize
4.9MB

Download
memory/2496-7-0x0000000000F40000-0x0000000001431000-memory.dmp

Filesize
4.9MB

Download
memory/2496-8-0x0000000000F40000-0x0000000001431000-memory.dmp

Filesize
4.9MB

Download
memory/2496-9-0x0000000000F40000-0x0000000001431000-memory.dmp

Filesize
4.9MB

Download
memory/2496-10-0x0000000000F40000-0x0000000001431000-memory.dmp

Filesize
4.9MB

Download
memory/2496-11-0x0000000000F40000-0x0000000001431000-memory.dmp

Filesize
4.9MB

Download
memory/2496-12-0x0000000000F40000-0x0000000001431000-memory.dmp

Filesize
4.9MB

Download
memory/2496-13-0x0000000000F41000-0x000000000118A000-memory.dmp

Filesize
2.3MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads