stealc | b0ba827719a2481183cec325d9daca05c0c0f88f7dba1a9f5a0d5a8efa0259aa

General

Target

70PM4_random.exe
Size

1.7MB
MD5

9bbce4f97ec6ce722de9ad3619b7c4e9
SHA1

61672133522cab050ec53e3e7df875d4cf7634cc
SHA256

b0ba827719a2481183cec325d9daca05c0c0f88f7dba1a9f5a0d5a8efa0259aa
SHA512

1fe2654d02eee08008ecb0a7cf85180016f43cccd037d3418073a6ae1e24b1fa2c35d87da11d273da9f48a6daf48582037f3f2ebabfbea8c4011e741ff0fcdfb
SSDEEP

49152:zptz7C7imX+0eBv22pzB1kUuoFolUgDZHItXwC:zpcWf22p5u201ItXw

Score

10^/10

stealc brat defense_evasion discovery stealer

Malware Config

Extracted

Family

stealc

Botnet

brat

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

defense_evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	70PM4_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\VideoBiosVersion	70PM4_random.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	70PM4_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	70PM4_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
2384	70PM4_random.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2664	2384	WerFault.exe	27

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	70PM4_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	70PM4_random.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	70PM4_random.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2384	70PM4_random.exe
2384	70PM4_random.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2384 wrote to memory of 2664	2384	70PM4_random.exe	31
PID 2384 wrote to memory of 2664	2384	70PM4_random.exe	31
PID 2384 wrote to memory of 2664	2384	70PM4_random.exe	31
PID 2384 wrote to memory of 2664	2384	70PM4_random.exe	31

C:\Users\Admin\AppData\Local\Temp\70PM4_random.exe
"C:\Users\Admin\AppData\Local\Temp\70PM4_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:2384
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2384 -s 928
  2⤵
  - Program crash
  PID:2664

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/2384-0-0x0000000000C70000-0x00000000012F6000-memory.dmp

Filesize
6.5MB

Download
memory/2384-1-0x00000000773E0000-0x00000000773E2000-memory.dmp

Filesize
8KB

Download
memory/2384-2-0x0000000000C71000-0x0000000000C88000-memory.dmp

Filesize
92KB

Download
memory/2384-3-0x0000000000C70000-0x00000000012F6000-memory.dmp

Filesize
6.5MB

Download
memory/2384-4-0x0000000000C70000-0x00000000012F6000-memory.dmp

Filesize
6.5MB

Download
memory/2384-5-0x0000000000C70000-0x00000000012F6000-memory.dmp

Filesize
6.5MB

Download
memory/2384-6-0x0000000000C70000-0x00000000012F6000-memory.dmp

Filesize
6.5MB

Download
memory/2384-7-0x0000000000C70000-0x00000000012F6000-memory.dmp

Filesize
6.5MB

Download
memory/2384-8-0x0000000000C70000-0x00000000012F6000-memory.dmp

Filesize
6.5MB

Download
memory/2384-9-0x0000000000C70000-0x00000000012F6000-memory.dmp

Filesize
6.5MB

Download
memory/2384-10-0x0000000000C70000-0x00000000012F6000-memory.dmp

Filesize
6.5MB

Download
memory/2384-11-0x0000000000C70000-0x00000000012F6000-memory.dmp

Filesize
6.5MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads