stealc | 95fcbefdb108b4d18062c436acdd24302da8ad64e48f1883972c892c9ac8b817

Analysis

max time kernel
95s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
25/01/2025, 19:55 UTC

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General

Target

95fcbefdb108b4d18062c436acdd24302da8ad64e48f1883972c892c9ac8b817.exe
Size

1.7MB
MD5

f41dfd98d7f8304859ecb4feb2af914b
SHA1

2e8e93a59956d0d357071328daef15b2f6685741
SHA256

95fcbefdb108b4d18062c436acdd24302da8ad64e48f1883972c892c9ac8b817
SHA512

f4ac099b42e5bcab7388f307b6407ee6718b749d7c62b979bd76826944f326f1d4f54f9cd8668800728791775ee75241e90b2ce461c2a4eff4494b1ad0c9c466
SSDEEP

49152:8uwuNGMBcriL8fV/kzpPl5nfKhUo5Vq1I/:gMB6c8fV/kpP3fjo34

Score

10^/10

stealc brat defense_evasion discovery stealer

Malware Config

Extracted

Family

stealc

Botnet

brat

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__	95fcbefdb108b4d18062c436acdd24302da8ad64e48f1883972c892c9ac8b817.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	95fcbefdb108b4d18062c436acdd24302da8ad64e48f1883972c892c9ac8b817.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	95fcbefdb108b4d18062c436acdd24302da8ad64e48f1883972c892c9ac8b817.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-1-5-21-493223053-2004649691-1575712786-1000\Software\Wine	95fcbefdb108b4d18062c436acdd24302da8ad64e48f1883972c892c9ac8b817.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
4576	95fcbefdb108b4d18062c436acdd24302da8ad64e48f1883972c892c9ac8b817.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1084	4576	WerFault.exe	82

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	95fcbefdb108b4d18062c436acdd24302da8ad64e48f1883972c892c9ac8b817.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	95fcbefdb108b4d18062c436acdd24302da8ad64e48f1883972c892c9ac8b817.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	95fcbefdb108b4d18062c436acdd24302da8ad64e48f1883972c892c9ac8b817.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
4576	95fcbefdb108b4d18062c436acdd24302da8ad64e48f1883972c892c9ac8b817.exe
4576	95fcbefdb108b4d18062c436acdd24302da8ad64e48f1883972c892c9ac8b817.exe
4576	95fcbefdb108b4d18062c436acdd24302da8ad64e48f1883972c892c9ac8b817.exe
4576	95fcbefdb108b4d18062c436acdd24302da8ad64e48f1883972c892c9ac8b817.exe

C:\Users\Admin\AppData\Local\Temp\95fcbefdb108b4d18062c436acdd24302da8ad64e48f1883972c892c9ac8b817.exe
"C:\Users\Admin\AppData\Local\Temp\95fcbefdb108b4d18062c436acdd24302da8ad64e48f1883972c892c9ac8b817.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
PID:4576
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4576 -s 1484
  2⤵
  - Program crash
  PID:1084

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 4576 -ip 4576
1⤵
PID:4996

Network

DNS

58.55.71.13.in-addr.arpa

Remote address:

8.8.8.8:53

Request

58.55.71.13.in-addr.arpa

IN PTR

Response
DNS

134.130.81.91.in-addr.arpa

Remote address:

8.8.8.8:53

Request

134.130.81.91.in-addr.arpa

IN PTR

Response
DNS

76.32.126.40.in-addr.arpa

Remote address:

8.8.8.8:53

Request

76.32.126.40.in-addr.arpa

IN PTR

Response
DNS

5.114.82.104.in-addr.arpa

Remote address:

8.8.8.8:53

Request

5.114.82.104.in-addr.arpa

IN PTR

Response

5.114.82.104.in-addr.arpa

IN PTR

a104-82-114-5deploystaticakamaitechnologiescom
DNS

217.106.137.52.in-addr.arpa

Remote address:

8.8.8.8:53

Request

217.106.137.52.in-addr.arpa

IN PTR

Response
DNS

209.205.72.20.in-addr.arpa

Remote address:

8.8.8.8:53

Request

209.205.72.20.in-addr.arpa

IN PTR

Response
DNS

197.87.175.4.in-addr.arpa

Remote address:

8.8.8.8:53

Request

197.87.175.4.in-addr.arpa

IN PTR

Response
DNS

197.87.175.4.in-addr.arpa

Remote address:

8.8.8.8:53

Request

197.87.175.4.in-addr.arpa

IN PTR
DNS

198.187.3.20.in-addr.arpa

Remote address:

8.8.8.8:53

Request

198.187.3.20.in-addr.arpa

IN PTR

Response
DNS

104.219.191.52.in-addr.arpa

Remote address:

8.8.8.8:53

Request

104.219.191.52.in-addr.arpa

IN PTR

Response
DNS

73.144.22.2.in-addr.arpa

Remote address:

8.8.8.8:53

Request

73.144.22.2.in-addr.arpa

IN PTR

Response

73.144.22.2.in-addr.arpa

IN PTR

a2-22-144-73deploystaticakamaitechnologiescom
DNS

13.227.111.52.in-addr.arpa

Remote address:

8.8.8.8:53

Request

13.227.111.52.in-addr.arpa

IN PTR

Response
DNS

81.144.22.2.in-addr.arpa

Remote address:

8.8.8.8:53

Request

81.144.22.2.in-addr.arpa

IN PTR

Response

81.144.22.2.in-addr.arpa

IN PTR

a2-22-144-81deploystaticakamaitechnologiescom

185.215.113.206:80

95fcbefdb108b4d18062c436acdd24302da8ad64e48f1883972c892c9ac8b817.exe

260 B
5

8.8.8.8:53

58.55.71.13.in-addr.arpa

dns

70 B
144 B
1
1

DNS Request

58.55.71.13.in-addr.arpa
8.8.8.8:53

134.130.81.91.in-addr.arpa

dns

72 B
147 B
1
1

DNS Request

134.130.81.91.in-addr.arpa
8.8.8.8:53

76.32.126.40.in-addr.arpa

dns

71 B
157 B
1
1

DNS Request

76.32.126.40.in-addr.arpa
8.8.8.8:53

5.114.82.104.in-addr.arpa

dns

71 B
135 B
1
1

DNS Request

5.114.82.104.in-addr.arpa
8.8.8.8:53

217.106.137.52.in-addr.arpa

dns

73 B
147 B
1
1

DNS Request

217.106.137.52.in-addr.arpa
8.8.8.8:53

209.205.72.20.in-addr.arpa

dns

72 B
158 B
1
1

DNS Request

209.205.72.20.in-addr.arpa
8.8.8.8:53

197.87.175.4.in-addr.arpa

dns

142 B
157 B
2
1

DNS Request

197.87.175.4.in-addr.arpa

DNS Request

197.87.175.4.in-addr.arpa
8.8.8.8:53

198.187.3.20.in-addr.arpa

dns

71 B
157 B
1
1

DNS Request

198.187.3.20.in-addr.arpa
8.8.8.8:53

104.219.191.52.in-addr.arpa

dns

73 B
147 B
1
1

DNS Request

104.219.191.52.in-addr.arpa
8.8.8.8:53

73.144.22.2.in-addr.arpa

dns

70 B
133 B
1
1

DNS Request

73.144.22.2.in-addr.arpa
8.8.8.8:53

13.227.111.52.in-addr.arpa

dns

72 B
158 B
1
1

DNS Request

13.227.111.52.in-addr.arpa
8.8.8.8:53

81.144.22.2.in-addr.arpa

dns

70 B
133 B
1
1

DNS Request

81.144.22.2.in-addr.arpa

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

Replay Monitor

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Downloads

memory/4576-0-0x00000000009A0000-0x0000000001026000-memory.dmp

Filesize
6.5MB

Download
memory/4576-1-0x0000000077904000-0x0000000077906000-memory.dmp

Filesize
8KB

Download
memory/4576-2-0x00000000009A1000-0x00000000009B8000-memory.dmp

Filesize
92KB

Download
memory/4576-3-0x00000000009A0000-0x0000000001026000-memory.dmp

Filesize
6.5MB

Download
memory/4576-4-0x00000000009A0000-0x0000000001026000-memory.dmp

Filesize
6.5MB

Download
memory/4576-6-0x00000000009A0000-0x0000000001026000-memory.dmp

Filesize
6.5MB

Download
memory/4576-5-0x00000000009A0000-0x0000000001026000-memory.dmp

Filesize
6.5MB

Download
memory/4576-7-0x00000000009A0000-0x0000000001026000-memory.dmp

Filesize
6.5MB

Download
memory/4576-8-0x00000000009A0000-0x0000000001026000-memory.dmp

Filesize
6.5MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

DNS Request

DNS Request

DNS Request

DNS Request

DNS Request

DNS Request

DNS Request

DNS Request

DNS Request

DNS Request

DNS Request

DNS Request

DNS Request

MITRE ATT&CK Enterprise v15

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Downloads

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