stealc | 06bc44cb1405fab902f43279466dbffe9eb81811275c8d2ef3f63c040af3023b

General

Target

06bc44cb1405fab902f43279466dbffe9eb81811275c8d2ef3f63c040af3023b.exe
Size

1.7MB
MD5

14bd485b67de25b88de07f322aa5869a
SHA1

ae9e3f238f6cb865ef8f2e1002cf6e7972e49395
SHA256

06bc44cb1405fab902f43279466dbffe9eb81811275c8d2ef3f63c040af3023b
SHA512

1687b6a0ffdb77ea8ee3a291d56d911744dc236f50711258c52a69961fecbf87b91d5f9102d25fe6ad4b0c0b23e4e4718845e847d8720fb1e06a83313ab081c5
SSDEEP

24576:UBqWKKYMPEVxYzMPkYHXANYksiZArxliP4OTomFu5Xxth9:UyM8Vx8W5aYRi2lpYu5XxZ

Score

10^/10

stealc vidar discovery spyware stealer

Malware Config

Extracted

Family

vidar

C2

https://t.me/bu77un

https://steamcommunity.com/profiles/76561199730044335

Attributes

user_agent
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:128.1) Gecko/20100101 Firefox/128.1

Signatures

Detect Vidar Stealer 9 IoCs

stealer

resource	yara_rule
behavioral1/memory/3904-1-0x0000000004060000-0x00000000041A3000-memory.dmp	family_vidar_v7
behavioral1/memory/5048-4-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/5048-8-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/5048-10-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/5048-11-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/5048-12-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/5048-13-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/5048-14-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/5048-15-0x0000000000400000-0x0000000000648000-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

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation	kat5340.tmp

Executes dropped EXE 1 IoCs

pid	Process
5048	kat5340.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 3904 set thread context of 5048	3904	06bc44cb1405fab902f43279466dbffe9eb81811275c8d2ef3f63c040af3023b.exe	80

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 2 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	kat5340.tmp
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	kat5340.tmp

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
4276	timeout.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
5048	kat5340.tmp
5048	kat5340.tmp
5048	kat5340.tmp
5048	kat5340.tmp
5048	kat5340.tmp
5048	kat5340.tmp

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 3904 wrote to memory of 5048	3904	06bc44cb1405fab902f43279466dbffe9eb81811275c8d2ef3f63c040af3023b.exe	80
PID 3904 wrote to memory of 5048	3904	06bc44cb1405fab902f43279466dbffe9eb81811275c8d2ef3f63c040af3023b.exe	80
PID 3904 wrote to memory of 5048	3904	06bc44cb1405fab902f43279466dbffe9eb81811275c8d2ef3f63c040af3023b.exe	80
PID 3904 wrote to memory of 5048	3904	06bc44cb1405fab902f43279466dbffe9eb81811275c8d2ef3f63c040af3023b.exe	80
PID 3904 wrote to memory of 5048	3904	06bc44cb1405fab902f43279466dbffe9eb81811275c8d2ef3f63c040af3023b.exe	80
PID 3904 wrote to memory of 5048	3904	06bc44cb1405fab902f43279466dbffe9eb81811275c8d2ef3f63c040af3023b.exe	80
PID 3904 wrote to memory of 5048	3904	06bc44cb1405fab902f43279466dbffe9eb81811275c8d2ef3f63c040af3023b.exe	80
PID 3904 wrote to memory of 5048	3904	06bc44cb1405fab902f43279466dbffe9eb81811275c8d2ef3f63c040af3023b.exe	80
PID 5048 wrote to memory of 432	5048	kat5340.tmp	83
PID 5048 wrote to memory of 432	5048	kat5340.tmp	83
PID 5048 wrote to memory of 432	5048	kat5340.tmp	83
PID 432 wrote to memory of 4276	432	cmd.exe	85
PID 432 wrote to memory of 4276	432	cmd.exe	85
PID 432 wrote to memory of 4276	432	cmd.exe	85

C:\Users\Admin\AppData\Local\Temp\06bc44cb1405fab902f43279466dbffe9eb81811275c8d2ef3f63c040af3023b.exe
"C:\Users\Admin\AppData\Local\Temp\06bc44cb1405fab902f43279466dbffe9eb81811275c8d2ef3f63c040af3023b.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3904
- C:\Users\Admin\AppData\Local\Temp\kat5340.tmp
  C:\Users\Admin\AppData\Local\Temp\kat5340.tmp
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:5048
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\system32\cmd.exe" /c timeout /t 10 & del /f /q "C:\Users\Admin\AppData\Local\Temp\kat5340.tmp" & rd /s /q "C:\ProgramData\KFCAFIIDHIDG" & exit
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:432
  - - C:\Windows\SysWOW64\timeout.exe
      timeout /t 10
      4⤵
      Delays execution with timeout.exe
      PID:4276

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

3

T1012

System Information Discovery

3

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\kat5340.tmp

Filesize
861KB

MD5
66064dbdb70a5eb15ebf3bf65aba254b

SHA1
0284fd320f99f62aca800fb1251eff4c31ec4ed7

SHA256
6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795

SHA512
b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

Download Submit
memory/3904-0-0x0000000000780000-0x0000000000781000-memory.dmp

Filesize
4KB

Download
memory/3904-1-0x0000000004060000-0x00000000041A3000-memory.dmp

Filesize
1.3MB

Download
memory/3904-9-0x0000000000400000-0x00000000005C5000-memory.dmp

Filesize
1.8MB

Download
memory/5048-4-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/5048-8-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/5048-10-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/5048-11-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/5048-12-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/5048-13-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/5048-14-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/5048-15-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads