stealc | 6c0dd2906f4b00bd1d7be882e9d59d355b1a16ae04342ac7f6885f7380df152b

General

Target

6c0dd2906f4b00bd1d7be882e9d59d355b1a16ae04342ac7f6885f7380df152b.exe
Size

1.7MB
MD5

b2d1d3e4feb31d5519f4cf1ba66b338b
SHA1

74edbce6e2b04e2d4ee9cdb452d8d0d62d503a82
SHA256

6c0dd2906f4b00bd1d7be882e9d59d355b1a16ae04342ac7f6885f7380df152b
SHA512

21e0d7657decfad1696997462b393cda55b4164a80c2896edaa9b46866c32f1081e1e81fd81481d54ca71a78dcff2a092bef2aed46513e1032928554bfb1ee9a
SSDEEP

24576:JoZYQkmdrf+kUfMxVVtes12FxwojKr98YGeGG9iH:JPYx5UkxVVChjHZQsH

Score

10^/10

stealc vidar discovery spyware stealer

Malware Config

Extracted

Family

stealc

rc4.plain

Extracted

Family

vidar

C2

https://t.me/r8z0l

https://steamcommunity.com/profiles/76561199698764354

Attributes

user_agent
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:128.0) Gecko/20100101 Firefox/128.0

Signatures

Detect Vidar Stealer 9 IoCs

stealer

resource	yara_rule
behavioral2/memory/3360-2-0x0000000004100000-0x0000000004210000-memory.dmp	family_vidar_v7
behavioral2/memory/3064-8-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/3064-10-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/3064-4-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/3064-11-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/3064-12-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/3064-13-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/3064-14-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/3064-17-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7

Stealc
Stealc is an infostealer written in C++.
stealer stealc
Vidar
Vidar is an infostealer based on Arkei stealer.
stealer vidar

Executes dropped EXE 1 IoCs

pid	Process
3064	kat4508.tmp

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
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 SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3360 set thread context of 3064	3360	6c0dd2906f4b00bd1d7be882e9d59d355b1a16ae04342ac7f6885f7380df152b.exe	78

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	kat4508.tmp

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
1360	timeout.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3064	kat4508.tmp
3064	kat4508.tmp

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 3360 wrote to memory of 3064	3360	6c0dd2906f4b00bd1d7be882e9d59d355b1a16ae04342ac7f6885f7380df152b.exe	78
PID 3360 wrote to memory of 3064	3360	6c0dd2906f4b00bd1d7be882e9d59d355b1a16ae04342ac7f6885f7380df152b.exe	78
PID 3360 wrote to memory of 3064	3360	6c0dd2906f4b00bd1d7be882e9d59d355b1a16ae04342ac7f6885f7380df152b.exe	78
PID 3360 wrote to memory of 3064	3360	6c0dd2906f4b00bd1d7be882e9d59d355b1a16ae04342ac7f6885f7380df152b.exe	78
PID 3360 wrote to memory of 3064	3360	6c0dd2906f4b00bd1d7be882e9d59d355b1a16ae04342ac7f6885f7380df152b.exe	78
PID 3360 wrote to memory of 3064	3360	6c0dd2906f4b00bd1d7be882e9d59d355b1a16ae04342ac7f6885f7380df152b.exe	78
PID 3360 wrote to memory of 3064	3360	6c0dd2906f4b00bd1d7be882e9d59d355b1a16ae04342ac7f6885f7380df152b.exe	78
PID 3360 wrote to memory of 3064	3360	6c0dd2906f4b00bd1d7be882e9d59d355b1a16ae04342ac7f6885f7380df152b.exe	78
PID 3064 wrote to memory of 380	3064	kat4508.tmp	80
PID 3064 wrote to memory of 380	3064	kat4508.tmp	80
PID 3064 wrote to memory of 380	3064	kat4508.tmp	80
PID 380 wrote to memory of 1360	380	cmd.exe	82
PID 380 wrote to memory of 1360	380	cmd.exe	82
PID 380 wrote to memory of 1360	380	cmd.exe	82

C:\Users\Admin\AppData\Local\Temp\6c0dd2906f4b00bd1d7be882e9d59d355b1a16ae04342ac7f6885f7380df152b.exe
"C:\Users\Admin\AppData\Local\Temp\6c0dd2906f4b00bd1d7be882e9d59d355b1a16ae04342ac7f6885f7380df152b.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3360
- C:\Users\Admin\AppData\Local\Temp\kat4508.tmp
  C:\Users\Admin\AppData\Local\Temp\kat4508.tmp
  2⤵
  - Executes dropped EXE
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:3064
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /c timeout /t 10 & del /f /q "C:\Users\Admin\AppData\Local\Temp\kat4508.tmp" & rd /s /q "C:\ProgramData\KFBGDBFBKKJE" & exit
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:380
  - - C:\Windows\SysWOW64\timeout.exe
      timeout /t 10
      4⤵
      Delays execution with timeout.exe
      PID:1360

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\kat4508.tmp

Filesize
861KB

MD5
66064dbdb70a5eb15ebf3bf65aba254b

SHA1
0284fd320f99f62aca800fb1251eff4c31ec4ed7

SHA256
6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795

SHA512
b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

Download Submit
memory/3064-8-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/3064-10-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/3064-4-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/3064-11-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/3064-12-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/3064-13-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/3064-14-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/3064-17-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/3360-0-0x0000000002550000-0x0000000002551000-memory.dmp

Filesize
4KB

Download
memory/3360-2-0x0000000004100000-0x0000000004210000-memory.dmp

Filesize
1.1MB

Download
memory/3360-9-0x0000000000400000-0x00000000005B8000-memory.dmp

Filesize
1.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads