stealc | 9fd04eb7256cd879dc38ea0765ffc538b89e708ba30250f23d947c3713f97885

General

Target

9fd04eb7256cd879dc38ea0765ffc538b89e708ba30250f23d947c3713f97885.exe
Size

368KB
MD5

bf808afcc221165140ff57a5e31bdef2
SHA1

64f4ddd4a0f8cde10c990e6167fefb95a311ccec
SHA256

9fd04eb7256cd879dc38ea0765ffc538b89e708ba30250f23d947c3713f97885
SHA512

d1521cd2ca9e064a08f4252bd82c0b6c97c464c49cd327a201d085107201e9cac02a9b311e042e79ee1eddee482975afea1ef0682e2c8bbd74e1415f23cbe1cf
SSDEEP

3072:VUrql9LC/xRNNWY+/BFsiLMcOQlBDQiOKehsPsPn0ScNMvlL+l0A+5NnpINCfh1:VUraLC/xRPO/BmjJQlNKhskHcwL+W/b

Score

10^/10

stealc systembc vidar discovery persistence spyware stealer trojan

Malware Config

Extracted

Family

stealc

rc4.plain

Extracted

Family

vidar

C2

https://t.me/memve4erin

https://steamcommunity.com/profiles/76561199699680841

Attributes

user_agent
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:129.0) Gecko/20100101 Firefox/129.0

Extracted

Family

systembc

C2

173.211.46.4:4299

127.0.0.1:4299

Signatures

Detect Vidar Stealer 6 IoCs

stealer

resource	yara_rule
behavioral2/memory/2612-2-0x0000000003F60000-0x0000000003F95000-memory.dmp	family_vidar_v7
behavioral2/memory/2612-3-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/2612-57-0x0000000000400000-0x0000000002378000-memory.dmp	family_vidar_v7
behavioral2/memory/2612-106-0x0000000003F60000-0x0000000003F95000-memory.dmp	family_vidar_v7
behavioral2/memory/2612-107-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/2612-105-0x0000000000400000-0x0000000002378000-memory.dmp	family_vidar_v7

Stealc
Stealc is an infostealer written in C++.
stealer stealc
SystemBC
SystemBC is a proxy and remote administration tool first seen in 2019.
trojan systembc
Vidar
Vidar is an infostealer based on Arkei stealer.
stealer vidar
Downloads MZ/PE file

Executes dropped EXE 1 IoCs

pid	Process
1484	KJDAECAEBK.exe

Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001
Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001
Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
spyware

Data from Local System
T1005

Credentials In Files
T1552.001

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-873560699-1074803302-2326074425-1000\Software\Microsoft\Windows\CurrentVersion\Run\socks5 = "powershell.exe -windowstyle hidden -Command \"& 'C:\\ProgramData\\KJDAECAEBK.exe'\""	KJDAECAEBK.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
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Checks processor information in registry 2 TTPs 1 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	9fd04eb7256cd879dc38ea0765ffc538b89e708ba30250f23d947c3713f97885.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
5088	timeout.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2612	9fd04eb7256cd879dc38ea0765ffc538b89e708ba30250f23d947c3713f97885.exe
2612	9fd04eb7256cd879dc38ea0765ffc538b89e708ba30250f23d947c3713f97885.exe
2612	9fd04eb7256cd879dc38ea0765ffc538b89e708ba30250f23d947c3713f97885.exe
2612	9fd04eb7256cd879dc38ea0765ffc538b89e708ba30250f23d947c3713f97885.exe
2612	9fd04eb7256cd879dc38ea0765ffc538b89e708ba30250f23d947c3713f97885.exe
2612	9fd04eb7256cd879dc38ea0765ffc538b89e708ba30250f23d947c3713f97885.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 2612 wrote to memory of 1484	2612	9fd04eb7256cd879dc38ea0765ffc538b89e708ba30250f23d947c3713f97885.exe	76
PID 2612 wrote to memory of 1484	2612	9fd04eb7256cd879dc38ea0765ffc538b89e708ba30250f23d947c3713f97885.exe	76
PID 2612 wrote to memory of 1484	2612	9fd04eb7256cd879dc38ea0765ffc538b89e708ba30250f23d947c3713f97885.exe	76
PID 2612 wrote to memory of 428	2612	9fd04eb7256cd879dc38ea0765ffc538b89e708ba30250f23d947c3713f97885.exe	78
PID 2612 wrote to memory of 428	2612	9fd04eb7256cd879dc38ea0765ffc538b89e708ba30250f23d947c3713f97885.exe	78
PID 2612 wrote to memory of 428	2612	9fd04eb7256cd879dc38ea0765ffc538b89e708ba30250f23d947c3713f97885.exe	78
PID 428 wrote to memory of 5088	428	cmd.exe	80
PID 428 wrote to memory of 5088	428	cmd.exe	80
PID 428 wrote to memory of 5088	428	cmd.exe	80

C:\Users\Admin\AppData\Local\Temp\9fd04eb7256cd879dc38ea0765ffc538b89e708ba30250f23d947c3713f97885.exe
"C:\Users\Admin\AppData\Local\Temp\9fd04eb7256cd879dc38ea0765ffc538b89e708ba30250f23d947c3713f97885.exe"
1⤵
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2612
- C:\ProgramData\KJDAECAEBK.exe
  "C:\ProgramData\KJDAECAEBK.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  PID:1484
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c timeout /t 10 & del /f /q "C:\Users\Admin\AppData\Local\Temp\9fd04eb7256cd879dc38ea0765ffc538b89e708ba30250f23d947c3713f97885.exe" & rd /s /q "C:\ProgramData\KJDAECAEBKJJ" & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:428
- - C:\Windows\SysWOW64\timeout.exe
    timeout /t 10
    3⤵
    - Delays execution with timeout.exe
    PID:5088

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Unsecured Credentials

4

T1552

Credentials In Files

4

T1552.001

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Data from Local System

4

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\ProgramData\KJDAECAEBK.exe

Filesize
7KB

MD5
557331587055f884e301b299883620ec

SHA1
cff40f1845dc2749fe352a280808d08c468b9a0e

SHA256
cd83bbe57e977043d1ec53f43cc9f879c5b37944a8586cfad729e10e6d596d0d

SHA512
2e5fdec1b587b4745da169177b47c20b9ab91e45637b227998f907f3a303a00eaf4bfb71165e898b3d2de603739cc46c226cefacbef208416acff67f1d3f9b08

Download Submit
memory/2612-1-0x00000000026A0000-0x00000000027A0000-memory.dmp

Filesize
1024KB

Download
memory/2612-2-0x0000000003F60000-0x0000000003F95000-memory.dmp

Filesize
212KB

Download
memory/2612-3-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/2612-10-0x00000000102D0000-0x000000001052F000-memory.dmp

Filesize
2.4MB

Download
memory/2612-57-0x0000000000400000-0x0000000002378000-memory.dmp

Filesize
31.5MB

Download
memory/2612-93-0x00000000026A0000-0x00000000027A0000-memory.dmp

Filesize
1024KB

Download
memory/2612-106-0x0000000003F60000-0x0000000003F95000-memory.dmp

Filesize
212KB

Download
memory/2612-107-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/2612-105-0x0000000000400000-0x0000000002378000-memory.dmp

Filesize
31.5MB

Download

Resubmissions

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads