stealc | 5b976920a8ac0a3b84b5ab38b00582b3a363fcfbef190ed972894dd0773ddc08

General

Target

5b976920a8ac0a3b84b5ab38b00582b3a363fcfbef190ed972894dd0773ddc08.exe
Size

2.0MB
MD5

7de9cc7acfb895495a3242c6b10629aa
SHA1

ea6f3b1ed1a4f583cb18f0f94b5f86814d3a4d81
SHA256

5b976920a8ac0a3b84b5ab38b00582b3a363fcfbef190ed972894dd0773ddc08
SHA512

d5e63fbdd21b81ac8548711d1aeedbf20031736c9fc99939b2e902832bb4ff8539a00f23ee57cfc9bcc0387c5964785dba8fd426164da629b06919ebb0a01c7d
SSDEEP

49152:IFno/jfcJtTF+TxMoxc1TU+j+dAzGkiT:IFno/j0tIuoITsdZT

Score

10^/10

stealc vidar discovery spyware stealer

Malware Config

Extracted

Family

stealc

rc4.plain

Signatures

Detect Vidar Stealer 10 IoCs

stealer

resource	yara_rule
behavioral1/memory/2928-1-0x0000000003310000-0x0000000003459000-memory.dmp	family_vidar_v7
behavioral1/memory/1680-18-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral1/memory/1680-22-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral1/memory/1680-23-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral1/memory/1680-17-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral1/memory/1680-15-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral1/memory/1680-96-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral1/memory/1680-99-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral1/memory/1680-100-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral1/memory/1680-114-0x0000000000400000-0x0000000000646000-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

Executes dropped EXE 1 IoCs

pid	Process
1680	kat14E8.tmp

Loads dropped DLL 2 IoCs

pid	Process
2928	5b976920a8ac0a3b84b5ab38b00582b3a363fcfbef190ed972894dd0773ddc08.exe
2928	5b976920a8ac0a3b84b5ab38b00582b3a363fcfbef190ed972894dd0773ddc08.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
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 2928 set thread context of 1680	2928	5b976920a8ac0a3b84b5ab38b00582b3a363fcfbef190ed972894dd0773ddc08.exe	28

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	kat14E8.tmp

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
2092	timeout.exe

Modifies system certificate store 2 TTPs 3 IoCs

evasion spyware trojan

Install Root Certificate

T1553.004

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\5FB7EE0633E259DBAD0C4C9AE6D38F1A61C7DC25	kat14E8.tmp
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\5FB7EE0633E259DBAD0C4C9AE6D38F1A61C7DC25\Blob = 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	kat14E8.tmp
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\5FB7EE0633E259DBAD0C4C9AE6D38F1A61C7DC25\Blob = 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	kat14E8.tmp

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
1680	kat14E8.tmp

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 2928 wrote to memory of 1680	2928	5b976920a8ac0a3b84b5ab38b00582b3a363fcfbef190ed972894dd0773ddc08.exe	28
PID 2928 wrote to memory of 1680	2928	5b976920a8ac0a3b84b5ab38b00582b3a363fcfbef190ed972894dd0773ddc08.exe	28
PID 2928 wrote to memory of 1680	2928	5b976920a8ac0a3b84b5ab38b00582b3a363fcfbef190ed972894dd0773ddc08.exe	28
PID 2928 wrote to memory of 1680	2928	5b976920a8ac0a3b84b5ab38b00582b3a363fcfbef190ed972894dd0773ddc08.exe	28
PID 2928 wrote to memory of 1680	2928	5b976920a8ac0a3b84b5ab38b00582b3a363fcfbef190ed972894dd0773ddc08.exe	28
PID 2928 wrote to memory of 1680	2928	5b976920a8ac0a3b84b5ab38b00582b3a363fcfbef190ed972894dd0773ddc08.exe	28
PID 2928 wrote to memory of 1680	2928	5b976920a8ac0a3b84b5ab38b00582b3a363fcfbef190ed972894dd0773ddc08.exe	28
PID 2928 wrote to memory of 1680	2928	5b976920a8ac0a3b84b5ab38b00582b3a363fcfbef190ed972894dd0773ddc08.exe	28
PID 2928 wrote to memory of 1680	2928	5b976920a8ac0a3b84b5ab38b00582b3a363fcfbef190ed972894dd0773ddc08.exe	28
PID 1680 wrote to memory of 1992	1680	kat14E8.tmp	31
PID 1680 wrote to memory of 1992	1680	kat14E8.tmp	31
PID 1680 wrote to memory of 1992	1680	kat14E8.tmp	31
PID 1680 wrote to memory of 1992	1680	kat14E8.tmp	31
PID 1680 wrote to memory of 2424	1680	kat14E8.tmp	33
PID 1680 wrote to memory of 2424	1680	kat14E8.tmp	33
PID 1680 wrote to memory of 2424	1680	kat14E8.tmp	33
PID 1680 wrote to memory of 2424	1680	kat14E8.tmp	33
PID 2424 wrote to memory of 2092	2424	cmd.exe	35
PID 2424 wrote to memory of 2092	2424	cmd.exe	35
PID 2424 wrote to memory of 2092	2424	cmd.exe	35
PID 2424 wrote to memory of 2092	2424	cmd.exe	35

C:\Users\Admin\AppData\Local\Temp\5b976920a8ac0a3b84b5ab38b00582b3a363fcfbef190ed972894dd0773ddc08.exe
"C:\Users\Admin\AppData\Local\Temp\5b976920a8ac0a3b84b5ab38b00582b3a363fcfbef190ed972894dd0773ddc08.exe"
1⤵
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2928
- C:\Users\Admin\AppData\Local\Temp\kat14E8.tmp
  C:\Users\Admin\AppData\Local\Temp\kat14E8.tmp
  2⤵
  - Executes dropped EXE
  - Checks processor information in registry
  - Modifies system certificate store
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:1680
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /c start "" "C:\ProgramData\DBFHDBGIEB.exe"
    3⤵
    PID:1992
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /c timeout /t 10 & del /f /q "C:\Users\Admin\AppData\Local\Temp\kat14E8.tmp" & rd /s /q "C:\ProgramData\AEBAKJDGHIIJ" & exit
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2424
  - - C:\Windows\SysWOW64\timeout.exe
      timeout /t 10
      4⤵
      Delays execution with timeout.exe
      PID:2092

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Subvert Trust Controls

1

T1553

Install Root Certificate

1

T1553.004

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

Replay Monitor

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Downloads

C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\94308059B57B3142E455B38A6EB92015

Filesize
68KB

MD5
29f65ba8e88c063813cc50a4ea544e93

SHA1
05a7040d5c127e68c25d81cc51271ffb8bef3568

SHA256
1ed81fa8dfb6999a9fedc6e779138ffd99568992e22d300acd181a6d2c8de184

SHA512
e29b2e92c496245bed3372578074407e8ef8882906ce10c35b3c8deebfefe01b5fd7f3030acaa693e175f4b7aca6cd7d8d10ae1c731b09c5fa19035e005de3aa

Download Submit
C:\Users\Admin\AppData\Local\Temp\Tar1A1D.tmp

Filesize
177KB

MD5
435a9ac180383f9fa094131b173a2f7b

SHA1
76944ea657a9db94f9a4bef38f88c46ed4166983

SHA256
67dc37ed50b8e63272b49a254a6039ee225974f1d767bb83eb1fd80e759a7c34

SHA512
1a6b277611959720a9c71114957620517ad94541302f164eb872bd322292a952409bafb8bc2ac793b16ad5f25d83f8594ccff2b7834e3c2b2b941e6fc84c009a

Download Submit
\Users\Admin\AppData\Local\Temp\kat14E8.tmp

Filesize
861KB

MD5
66064dbdb70a5eb15ebf3bf65aba254b

SHA1
0284fd320f99f62aca800fb1251eff4c31ec4ed7

SHA256
6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795

SHA512
b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

Download Submit
memory/1680-18-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/1680-99-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/1680-22-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/1680-23-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/1680-114-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/1680-17-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/1680-15-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/1680-13-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/1680-12-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/1680-9-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/1680-100-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/1680-96-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/2928-20-0x0000000000400000-0x0000000000602000-memory.dmp

Filesize
2.0MB

Download
memory/2928-1-0x0000000003310000-0x0000000003459000-memory.dmp

Filesize
1.3MB

Download
memory/2928-0-0x0000000000220000-0x0000000000221000-memory.dmp

Filesize
4KB

Download

Analysis

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