stealc | a782058a0f3fe32eddc56aa22a302f5c1d7f718e434cf2c547336ace69a680e2

General

Target

a782058a0f3fe32eddc56aa22a302f5c1d7f718e434cf2c547336ace69a680e2.exe
Size

1.7MB
MD5

3b43c7942554833f316cf7108b571f8b
SHA1

f6f15b0a739eac16980144cbc1b7e2579fe9141a
SHA256

a782058a0f3fe32eddc56aa22a302f5c1d7f718e434cf2c547336ace69a680e2
SHA512

f12e5b6a73c6c75a1641b31446aac4111d1326b6186f9b3a70b4527256f6f4a9325382daedd89524afc2f4137536a8e6350849a18a9da769ddb834e85c7b0226
SSDEEP

49152:CCRt5JhpnWwiPQ1+xLwj6oNWuJ/syBrFXVz:dRvJh1tiPs+xEJF5Brb

Score

10^/10

stealc mars discovery evasion stealer

Malware Config

Extracted

Family

stealc

Botnet

mars

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

Processes:

a782058a0f3fe32eddc56aa22a302f5c1d7f718e434cf2c547336ace69a680e2.exe

description ioc process

Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ a782058a0f3fe32eddc56aa22a302f5c1d7f718e434cf2c547336ace69a680e2.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	a782058a0f3fe32eddc56aa22a302f5c1d7f718e434cf2c547336ace69a680e2.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

Processes:

a782058a0f3fe32eddc56aa22a302f5c1d7f718e434cf2c547336ace69a680e2.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	a782058a0f3fe32eddc56aa22a302f5c1d7f718e434cf2c547336ace69a680e2.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	a782058a0f3fe32eddc56aa22a302f5c1d7f718e434cf2c547336ace69a680e2.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

Processes:

a782058a0f3fe32eddc56aa22a302f5c1d7f718e434cf2c547336ace69a680e2.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1163522206-1469769407-485553996-1000\Software\Wine	a782058a0f3fe32eddc56aa22a302f5c1d7f718e434cf2c547336ace69a680e2.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

Processes:

a782058a0f3fe32eddc56aa22a302f5c1d7f718e434cf2c547336ace69a680e2.exe

pid process

2172 a782058a0f3fe32eddc56aa22a302f5c1d7f718e434cf2c547336ace69a680e2.exe
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

2800 2172 WerFault.exe a782058a0f3fe32eddc56aa22a302f5c1d7f718e434cf2c547336ace69a680e2.exe

pid	pid_target	process	target process
2800	2172	WerFault.exe	a782058a0f3fe32eddc56aa22a302f5c1d7f718e434cf2c547336ace69a680e2.exe

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

Processes:

a782058a0f3fe32eddc56aa22a302f5c1d7f718e434cf2c547336ace69a680e2.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	a782058a0f3fe32eddc56aa22a302f5c1d7f718e434cf2c547336ace69a680e2.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

Processes:

a782058a0f3fe32eddc56aa22a302f5c1d7f718e434cf2c547336ace69a680e2.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	a782058a0f3fe32eddc56aa22a302f5c1d7f718e434cf2c547336ace69a680e2.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	a782058a0f3fe32eddc56aa22a302f5c1d7f718e434cf2c547336ace69a680e2.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

a782058a0f3fe32eddc56aa22a302f5c1d7f718e434cf2c547336ace69a680e2.exe

pid	process
2172	a782058a0f3fe32eddc56aa22a302f5c1d7f718e434cf2c547336ace69a680e2.exe
2172	a782058a0f3fe32eddc56aa22a302f5c1d7f718e434cf2c547336ace69a680e2.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

a782058a0f3fe32eddc56aa22a302f5c1d7f718e434cf2c547336ace69a680e2.exe

description	pid	process	target process
PID 2172 wrote to memory of 2800	2172	a782058a0f3fe32eddc56aa22a302f5c1d7f718e434cf2c547336ace69a680e2.exe	WerFault.exe
PID 2172 wrote to memory of 2800	2172	a782058a0f3fe32eddc56aa22a302f5c1d7f718e434cf2c547336ace69a680e2.exe	WerFault.exe
PID 2172 wrote to memory of 2800	2172	a782058a0f3fe32eddc56aa22a302f5c1d7f718e434cf2c547336ace69a680e2.exe	WerFault.exe
PID 2172 wrote to memory of 2800	2172	a782058a0f3fe32eddc56aa22a302f5c1d7f718e434cf2c547336ace69a680e2.exe	WerFault.exe

C:\Users\Admin\AppData\Local\Temp\a782058a0f3fe32eddc56aa22a302f5c1d7f718e434cf2c547336ace69a680e2.exe
"C:\Users\Admin\AppData\Local\Temp\a782058a0f3fe32eddc56aa22a302f5c1d7f718e434cf2c547336ace69a680e2.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 928
  2⤵
  - Program crash
  PID:2800

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/2172-0-0x00000000001E0000-0x0000000000885000-memory.dmp

Filesize
6.6MB

Download
memory/2172-1-0x0000000077D40000-0x0000000077D42000-memory.dmp

Filesize
8KB

Download
memory/2172-2-0x00000000001E1000-0x00000000001F8000-memory.dmp

Filesize
92KB

Download
memory/2172-3-0x00000000001E0000-0x0000000000885000-memory.dmp

Filesize
6.6MB

Download
memory/2172-4-0x00000000001E0000-0x0000000000885000-memory.dmp

Filesize
6.6MB

Download
memory/2172-5-0x00000000001E0000-0x0000000000885000-memory.dmp

Filesize
6.6MB

Download
memory/2172-6-0x00000000001E0000-0x0000000000885000-memory.dmp

Filesize
6.6MB

Download
memory/2172-7-0x00000000001E0000-0x0000000000885000-memory.dmp

Filesize
6.6MB

Download
memory/2172-8-0x00000000001E0000-0x0000000000885000-memory.dmp

Filesize
6.6MB

Download
memory/2172-9-0x00000000001E0000-0x0000000000885000-memory.dmp

Filesize
6.6MB

Download
memory/2172-10-0x00000000001E0000-0x0000000000885000-memory.dmp

Filesize
6.6MB

Download
memory/2172-11-0x00000000001E0000-0x0000000000885000-memory.dmp

Filesize
6.6MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads