stealc | 7d1aacb2de98d1e3e8fe87c782e896b92cf80b259f6a7d7246820b355ac0f943

General

Target

Setup.exe
Size

10.1MB
MD5

4f298e579a73803f788734a78cd1a067
SHA1

0e64e60763e65ce46c9a2ffaf1dcb7694e060575
SHA256

7d1aacb2de98d1e3e8fe87c782e896b92cf80b259f6a7d7246820b355ac0f943
SHA512

fd8fcbd9f0c2f9098371eb45463c9bf42b257b23ec8c9e8e79fd524786f29c61577414989b60334646b992a3f5116e03ed92b99ff51902e3657fa254b6fc06db
SSDEEP

196608:6cSu3XxiLS7jUJjRas3w+8wB6+d02F185c12dtkUoQ2kFl2ZnG46zsI7f1wGoO:/SuHxqS7Sdas3wHz+uM18i12dtkUTRl5

Score

10^/10

stealc vidar discovery spyware stealer

Malware Config

Extracted

Family

stealc

rc4.plain

Signatures

Detect Vidar Stealer 3 IoCs

stealer

resource	yara_rule
behavioral2/memory/976-55-0x0000000000FB0000-0x00000000016FA000-memory.dmp	family_vidar_v7
behavioral2/memory/976-99-0x0000000000FB0000-0x00000000016FA000-memory.dmp	family_vidar_v7
behavioral2/memory/976-109-0x0000000000FB0000-0x00000000016FA000-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 2 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-1-5-21-3558294865-3673844354-2255444939-1000\Control Panel\International\Geo\Nation	XDD.au3
Key value queried	\REGISTRY\USER\S-1-5-21-3558294865-3673844354-2255444939-1000\Control Panel\International\Geo\Nation	cmd.exe

Loads dropped DLL 3 IoCs

pid	Process
976	XDD.au3
976	XDD.au3
976	XDD.au3

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 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

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1560 set thread context of 4260	1560	Setup.exe	86

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	XDD.au3

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
3924	timeout.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
1560	Setup.exe
1560	Setup.exe
4260	comp.exe
4260	comp.exe
976	XDD.au3
976	XDD.au3
976	XDD.au3
976	XDD.au3

Suspicious behavior: MapViewOfSection 2 IoCs

pid	Process
1560	Setup.exe
4260	comp.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2308	cmd.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 1560 wrote to memory of 4260	1560	Setup.exe	86
PID 1560 wrote to memory of 4260	1560	Setup.exe	86
PID 1560 wrote to memory of 4260	1560	Setup.exe	86
PID 1560 wrote to memory of 4260	1560	Setup.exe	86
PID 4260 wrote to memory of 976	4260	comp.exe	97
PID 4260 wrote to memory of 976	4260	comp.exe	97
PID 4260 wrote to memory of 976	4260	comp.exe	97
PID 4260 wrote to memory of 976	4260	comp.exe	97
PID 4260 wrote to memory of 976	4260	comp.exe	97
PID 976 wrote to memory of 2308	976	XDD.au3	100
PID 976 wrote to memory of 2308	976	XDD.au3	100
PID 976 wrote to memory of 2308	976	XDD.au3	100
PID 976 wrote to memory of 4424	976	XDD.au3	102
PID 976 wrote to memory of 4424	976	XDD.au3	102
PID 976 wrote to memory of 4424	976	XDD.au3	102
PID 4424 wrote to memory of 3924	4424	cmd.exe	104
PID 4424 wrote to memory of 3924	4424	cmd.exe	104
PID 4424 wrote to memory of 3924	4424	cmd.exe	104

C:\Users\Admin\AppData\Local\Temp\Setup.exe
"C:\Users\Admin\AppData\Local\Temp\Setup.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:1560
- C:\Windows\SysWOW64\comp.exe
  C:\Windows\SysWOW64\comp.exe
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of WriteProcessMemory
  PID:4260
- - C:\Users\Admin\AppData\Local\Temp\XDD.au3
    C:\Users\Admin\AppData\Local\Temp\XDD.au3
    3⤵
    - Checks computer location settings
    - Loads dropped DLL
    - Checks processor information in registry
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:976
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c start "" "C:\ProgramData\CGDGHCBGDH.exe"
      4⤵
      Checks computer location settings
      Suspicious use of SetWindowsHookEx
      PID:2308
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c timeout /t 10 & rd /s /q "C:\ProgramData\JJJJKEHCAKFB" & exit
      4⤵
      Suspicious use of WriteProcessMemory
      PID:4424
    - - C:\Windows\SysWOW64\timeout.exe
        
        timeout /t 10
        5⤵
        Delays execution with timeout.exe
        
        PID:3924

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Unsecured Credentials

3

T1552

Credentials In Files

3

T1552.001

Discovery

Query Registry

3

T1012

System Information Discovery

3

T1082

Lateral Movement

Collection

Data from Local System

3

T1005

Command and Control

Exfiltration

Impact

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Downloads

C:\ProgramData\JJJJKEHCAKFB\VCRUNT~1.DLL

Filesize
78KB

MD5
a37ee36b536409056a86f50e67777dd7

SHA1
1cafa159292aa736fc595fc04e16325b27cd6750

SHA256
8934aaeb65b6e6d253dfe72dea5d65856bd871e989d5d3a2a35edfe867bb4825

SHA512
3a7c260646315cf8c01f44b2ec60974017496bd0d80dd055c7e43b707cadba2d63aab5e0efd435670aa77886ed86368390d42c4017fc433c3c4b9d1c47d0f356

Download Submit
C:\ProgramData\JJJJKEHCAKFB\mozglue.dll

Filesize
593KB

MD5
c8fd9be83bc728cc04beffafc2907fe9

SHA1
95ab9f701e0024cedfbd312bcfe4e726744c4f2e

SHA256
ba06a6ee0b15f5be5c4e67782eec8b521e36c107a329093ec400fe0404eb196a

SHA512
fbb446f4a27ef510e616caad52945d6c9cc1fd063812c41947e579ec2b54df57c6dc46237ded80fca5847f38cbe1747a6c66a13e2c8c19c664a72be35eb8b040

Download Submit
C:\ProgramData\JJJJKEHCAKFB\msvcp140.dll

Filesize
439KB

MD5
5ff1fca37c466d6723ec67be93b51442

SHA1
34cc4e158092083b13d67d6d2bc9e57b798a303b

SHA256
5136a49a682ac8d7f1ce71b211de8688fce42ed57210af087a8e2dbc8a934062

SHA512
4802ef62630c521d83a1d333969593fb00c9b38f82b4d07f70fbd21f495fea9b3f67676064573d2c71c42bc6f701992989742213501b16087bb6110e337c7546

Download Submit
C:\ProgramData\JJJJKEHCAKFB\nss3.dll

Filesize
2.0MB

MD5
1cc453cdf74f31e4d913ff9c10acdde2

SHA1
6e85eae544d6e965f15fa5c39700fa7202f3aafe

SHA256
ac5c92fe6c51cfa742e475215b83b3e11a4379820043263bf50d4068686c6fa5

SHA512
dd9ff4e06b00dc831439bab11c10e9b2ae864ea6e780d3835ea7468818f35439f352ef137da111efcdf2bb6465f6ca486719451bf6cf32c6a4420a56b1d64571

Download Submit
C:\ProgramData\JJJJKEHCAKFB\softokn3.dll

Filesize
251KB

MD5
4e52d739c324db8225bd9ab2695f262f

SHA1
71c3da43dc5a0d2a1941e874a6d015a071783889

SHA256
74ebbac956e519e16923abdc5ab8912098a4f64e38ddcb2eae23969f306afe5a

SHA512
2d4168a69082a9192b9248f7331bd806c260478ff817567df54f997d7c3c7d640776131355401e4bdb9744e246c36d658cb24b18de67d8f23f10066e5fe445f6

Download Submit
C:\Users\Admin\AppData\Local\Temp\XDD.au3

Filesize
872KB

MD5
c56b5f0201a3b3de53e561fe76912bfd

SHA1
2a4062e10a5de813f5688221dbeb3f3ff33eb417

SHA256
237d1bca6e056df5bb16a1216a434634109478f882d3b1d58344c801d184f95d

SHA512
195b98245bb820085ae9203cdb6d470b749d1f228908093e8606453b027b7d7681ccd7952e30c2f5dd40f8f0b999ccfc60ebb03419b574c08de6816e75710d2c

Download Submit
C:\Users\Admin\AppData\Local\Temp\c8268cf5

Filesize
6.7MB

MD5
79c84428129e577f90a46e1ca8c97197

SHA1
a4bff3a39ba004a65cfdc911d1c0f56ae248c647

SHA256
f99c106c9dac2077f8fbcb1fa55b4c6be4315ece789f0c03505b94817974a2c7

SHA512
96c37c758ab7c0836fc0f23d6876c5fd65226b3ebb670699b0b5bb325c36354d14dafa6f71961081930517b62cec4a5114e2feefc22f0555ad7647d9e848fcfa

Download Submit
C:\Users\Admin\AppData\Local\Temp\d59161c0

Filesize
6.7MB

MD5
ad846c4eb9d89de3ad400d157a6b48cc

SHA1
ad01b087c3ea2cfb08a897845fdf424b3e34e2b1

SHA256
88719edc45f8a390e8b861f227229b490a3b14d45ce8e69e424e6d9713dee6c2

SHA512
f0ffd9991b93fb3d090de78388b11479ffca2ceaf0dbd434ced7006ac3bca0b3c05105645951494edb962348a70b7995491b6ce2a1252c3982cc199018cc9b1a

Download Submit
memory/976-99-0x0000000000FB0000-0x00000000016FA000-memory.dmp

Filesize
7.3MB

Download
memory/976-109-0x0000000000FB0000-0x00000000016FA000-memory.dmp

Filesize
7.3MB

Download
memory/976-24-0x00007FFD1DCF0000-0x00007FFD1DEE5000-memory.dmp

Filesize
2.0MB

Download
memory/976-55-0x0000000000FB0000-0x00000000016FA000-memory.dmp

Filesize
7.3MB

Download
memory/976-31-0x0000000061E00000-0x0000000061EF3000-memory.dmp

Filesize
972KB

Download
memory/1560-10-0x0000000074B80000-0x0000000074CFB000-memory.dmp

Filesize
1.5MB

Download
memory/1560-9-0x0000000074B80000-0x0000000074CFB000-memory.dmp

Filesize
1.5MB

Download
memory/1560-8-0x0000000074B92000-0x0000000074B94000-memory.dmp

Filesize
8KB

Download
memory/1560-7-0x00007FFD1DCF0000-0x00007FFD1DEE5000-memory.dmp

Filesize
2.0MB

Download
memory/1560-6-0x0000000074B80000-0x0000000074CFB000-memory.dmp

Filesize
1.5MB

Download
memory/4260-22-0x0000000074B80000-0x0000000074CFB000-memory.dmp

Filesize
1.5MB

Download
memory/4260-18-0x0000000074B80000-0x0000000074CFB000-memory.dmp

Filesize
1.5MB

Download
memory/4260-16-0x0000000074B80000-0x0000000074CFB000-memory.dmp

Filesize
1.5MB

Download
memory/4260-14-0x00007FFD1DCF0000-0x00007FFD1DEE5000-memory.dmp

Filesize
2.0MB

Download
memory/4260-12-0x0000000074B80000-0x0000000074CFB000-memory.dmp

Filesize
1.5MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads