stealc | b77ecf0c04af336d29d15f9c3874283411405aa2929a5843d700b4ede4a8db05

Analysis

max time kernel
118s
max time network
119s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
10-10-2024 02:10

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General

Target

b77ecf0c04af336d29d15f9c3874283411405aa2929a5843d700b4ede4a8db05.exe
Size

1.7MB
MD5

c4f7ccbb1eaa9fa67631fdf25e3b5ff9
SHA1

a3d65384533372b5a5db58c298c529049d904e44
SHA256

b77ecf0c04af336d29d15f9c3874283411405aa2929a5843d700b4ede4a8db05
SHA512

f2638a76708104a7a61c9cc894d4b10dfbf73dc890ef5035942070e78a2743955fe1de3e209eafff44f4ccf3c44c98c93ab9d636f1b149d092ac9570bc72bc94
SSDEEP

49152:J4mNi50Wf+06Drq5qz07Nviho7+1aoH6:z0Grjz2vp7wH6

Score

10^/10

stealc doma discovery evasion stealer

Malware Config

Extracted

Family

stealc

Botnet

doma

http://185.215.113.37

Attributes

url_path
/e2b1563c6670f193.php

Signatures

Stealc
Stealc is an infostealer written in C++.
stealer 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__	b77ecf0c04af336d29d15f9c3874283411405aa2929a5843d700b4ede4a8db05.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	b77ecf0c04af336d29d15f9c3874283411405aa2929a5843d700b4ede4a8db05.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	b77ecf0c04af336d29d15f9c3874283411405aa2929a5843d700b4ede4a8db05.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-1-5-21-1506706701-1246725540-2219210854-1000\Software\Wine	b77ecf0c04af336d29d15f9c3874283411405aa2929a5843d700b4ede4a8db05.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
2884	b77ecf0c04af336d29d15f9c3874283411405aa2929a5843d700b4ede4a8db05.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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	b77ecf0c04af336d29d15f9c3874283411405aa2929a5843d700b4ede4a8db05.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2884	b77ecf0c04af336d29d15f9c3874283411405aa2929a5843d700b4ede4a8db05.exe

C:\Users\Admin\AppData\Local\Temp\b77ecf0c04af336d29d15f9c3874283411405aa2929a5843d700b4ede4a8db05.exe
"C:\Users\Admin\AppData\Local\Temp\b77ecf0c04af336d29d15f9c3874283411405aa2929a5843d700b4ede4a8db05.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
- Suspicious behavior: EnumeratesProcesses
PID:2884

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

T1497

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Virtualization/Sandbox Evasion

T1497

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/2884-0-0x00000000003B0000-0x0000000000A2C000-memory.dmp

Filesize
6.5MB

Download
memory/2884-1-0x0000000077C10000-0x0000000077C12000-memory.dmp

Filesize
8KB

Download
memory/2884-3-0x00000000003B0000-0x0000000000A2C000-memory.dmp

Filesize
6.5MB

Download
memory/2884-2-0x00000000003B1000-0x00000000003D4000-memory.dmp

Filesize
140KB

Download
memory/2884-4-0x00000000003B0000-0x0000000000A2C000-memory.dmp

Filesize
6.5MB

Download