stealc | 861d3b4691309a6e24138665a6c960e1fcba5229e049b10012064f3e450ce9ce

General

Target

861d3b4691309a6e24138665a6c960e1fcba5229e049b10012064f3e450ce9ce.exe
Size

2.0MB
MD5

14231efb0c56ea43b9f2ef328540f07a
SHA1

0f358db9469597b5424385b30b52c9680d971fb4
SHA256

861d3b4691309a6e24138665a6c960e1fcba5229e049b10012064f3e450ce9ce
SHA512

c680bc5514fabe66cf9a916a787cfe7ac28299d98b8ffa9d046ee77919ae1068b12c2c82d48fed5752c951ccc43ca5ed90726b2aed7fa8706dc5eba685c77de8
SSDEEP

49152:7QzHt472DwJtTF+TxMoxc1TU+j+dAzGwlrh:7QzHtatIuoITsdZ

Score

10^/10

stealc vidar discovery spyware stealer

Malware Config

Extracted

Family

stealc

rc4.plain

Signatures

Detect Vidar Stealer 14 IoCs

stealer

Processes:

resource	yara_rule
behavioral2/memory/2684-2-0x0000000004080000-0x00000000041C9000-memory.dmp	family_vidar_v7
behavioral2/memory/4268-4-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral2/memory/4268-9-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral2/memory/4268-8-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral2/memory/4268-16-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral2/memory/4268-17-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral2/memory/4268-34-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral2/memory/4268-35-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral2/memory/4268-51-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral2/memory/4268-52-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral2/memory/4268-59-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral2/memory/4268-64-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral2/memory/4268-65-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral2/memory/4268-66-0x0000000000400000-0x0000000000646000-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
Downloads MZ/PE file
Executes dropped EXE 1 IoCs

Processes:

kat80A9.tmp

pid process

4268 kat80A9.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
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
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

pid	process
4268	kat80A9.tmp

Suspicious use of SetThreadContext 1 IoCs

Processes:

861d3b4691309a6e24138665a6c960e1fcba5229e049b10012064f3e450ce9ce.exe

description	pid	process	target process
PID 2684 set thread context of 4268	2684	861d3b4691309a6e24138665a6c960e1fcba5229e049b10012064f3e450ce9ce.exe	kat80A9.tmp

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

Processes:

kat80A9.tmp

description ioc process

Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString kat80A9.tmp
Delays execution with timeout.exe 1 IoCs
evasion

Processes:

timeout.exe

pid process

4904 timeout.exe
Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

kat80A9.tmp

pid process

4268 kat80A9.tmp
4268 kat80A9.tmp
4268 kat80A9.tmp
4268 kat80A9.tmp

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	kat80A9.tmp

pid	process
4904	timeout.exe

pid	process
4268	kat80A9.tmp
4268	kat80A9.tmp
4268	kat80A9.tmp
4268	kat80A9.tmp

Suspicious use of WriteProcessMemory 14 IoCs

Processes:

861d3b4691309a6e24138665a6c960e1fcba5229e049b10012064f3e450ce9ce.exekat80A9.tmpcmd.exe

description	pid	process	target process
PID 2684 wrote to memory of 4268	2684	861d3b4691309a6e24138665a6c960e1fcba5229e049b10012064f3e450ce9ce.exe	kat80A9.tmp
PID 2684 wrote to memory of 4268	2684	861d3b4691309a6e24138665a6c960e1fcba5229e049b10012064f3e450ce9ce.exe	kat80A9.tmp
PID 2684 wrote to memory of 4268	2684	861d3b4691309a6e24138665a6c960e1fcba5229e049b10012064f3e450ce9ce.exe	kat80A9.tmp
PID 2684 wrote to memory of 4268	2684	861d3b4691309a6e24138665a6c960e1fcba5229e049b10012064f3e450ce9ce.exe	kat80A9.tmp
PID 2684 wrote to memory of 4268	2684	861d3b4691309a6e24138665a6c960e1fcba5229e049b10012064f3e450ce9ce.exe	kat80A9.tmp
PID 2684 wrote to memory of 4268	2684	861d3b4691309a6e24138665a6c960e1fcba5229e049b10012064f3e450ce9ce.exe	kat80A9.tmp
PID 2684 wrote to memory of 4268	2684	861d3b4691309a6e24138665a6c960e1fcba5229e049b10012064f3e450ce9ce.exe	kat80A9.tmp
PID 2684 wrote to memory of 4268	2684	861d3b4691309a6e24138665a6c960e1fcba5229e049b10012064f3e450ce9ce.exe	kat80A9.tmp
PID 4268 wrote to memory of 4020	4268	kat80A9.tmp	cmd.exe
PID 4268 wrote to memory of 4020	4268	kat80A9.tmp	cmd.exe
PID 4268 wrote to memory of 4020	4268	kat80A9.tmp	cmd.exe
PID 4020 wrote to memory of 4904	4020	cmd.exe	timeout.exe
PID 4020 wrote to memory of 4904	4020	cmd.exe	timeout.exe
PID 4020 wrote to memory of 4904	4020	cmd.exe	timeout.exe

C:\Users\Admin\AppData\Local\Temp\861d3b4691309a6e24138665a6c960e1fcba5229e049b10012064f3e450ce9ce.exe
"C:\Users\Admin\AppData\Local\Temp\861d3b4691309a6e24138665a6c960e1fcba5229e049b10012064f3e450ce9ce.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2684
- C:\Users\Admin\AppData\Local\Temp\kat80A9.tmp
  C:\Users\Admin\AppData\Local\Temp\kat80A9.tmp
  2⤵
  - Executes dropped EXE
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:4268
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /c timeout /t 10 & del /f /q "C:\Users\Admin\AppData\Local\Temp\kat80A9.tmp" & rd /s /q "C:\ProgramData\EHJJKFCBGIDG" & exit
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:4020
  - - C:\Windows\SysWOW64\timeout.exe
      timeout /t 10
      4⤵
      Delays execution with timeout.exe
      PID:4904

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\kat80A9.tmp

Filesize
861KB

MD5
66064dbdb70a5eb15ebf3bf65aba254b

SHA1
0284fd320f99f62aca800fb1251eff4c31ec4ed7

SHA256
6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795

SHA512
b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

Download Submit
memory/2684-2-0x0000000004080000-0x00000000041C9000-memory.dmp

Filesize
1.3MB

Download
memory/2684-0-0x0000000002370000-0x0000000002371000-memory.dmp

Filesize
4KB

Download
memory/2684-10-0x0000000000400000-0x0000000000601000-memory.dmp

Filesize
2.0MB

Download
memory/4268-17-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/4268-35-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/4268-9-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/4268-16-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/4268-4-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/4268-19-0x0000000019370000-0x00000000195CF000-memory.dmp

Filesize
2.4MB

Download
memory/4268-34-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/4268-8-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/4268-51-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/4268-52-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/4268-59-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/4268-64-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/4268-65-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/4268-66-0x0000000000400000-0x0000000000646000-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