stealc | f954f818007b508badc400417584ae7726a71f4b697d8b1eb13184318ef1eda1

General

Target

Wefaceswap.exe
Size

36.1MB
MD5

ccacce8535f682dd67c701d9157ef218
SHA1

5f72f5e427590a0c5e184cb013d27cc3d1af265f
SHA256

f954f818007b508badc400417584ae7726a71f4b697d8b1eb13184318ef1eda1
SHA512

ea0816462acc433c02800f43f7d979db68d2ec78e075e2d9f0a776b9ba24b5e27ad36d9e1bab0f0276585de422b42553b2fc9c1e2571e50861bd2fd66a6ce576
SSDEEP

393216:B1Du8BtuBw2FEL3Z3aLUoQvo6LP/SgbSpYvKEh1EdKwlGQKPJuGsiTfREsrgCYf6:BMguj8Q4VfvfqFTrYx

Score

10^/10

stealc vidar discovery execution persistence spyware stealer

Malware Config

Extracted

Family

stealc

rc4.plain

Extracted

Family

vidar

C2

http://116.203.7.199:80

https://steamcommunity.com/profiles/76561199689717899

https://t.me/copterwin

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 12 IoCs

stealer

Processes:

resource	yara_rule
behavioral1/memory/4684-36-0x0000000000E40000-0x0000000001086000-memory.dmp	family_vidar_v7
behavioral1/memory/2464-37-0x0000000000400000-0x00000000006C3000-memory.dmp	family_vidar_v7
behavioral1/memory/4684-38-0x0000000000E40000-0x0000000001086000-memory.dmp	family_vidar_v7
behavioral1/memory/4684-39-0x0000000000E40000-0x0000000001086000-memory.dmp	family_vidar_v7
behavioral1/memory/4684-55-0x0000000000E40000-0x0000000001086000-memory.dmp	family_vidar_v7
behavioral1/memory/4684-56-0x0000000000E40000-0x0000000001086000-memory.dmp	family_vidar_v7
behavioral1/memory/4684-72-0x0000000000E40000-0x0000000001086000-memory.dmp	family_vidar_v7
behavioral1/memory/4684-73-0x0000000000E40000-0x0000000001086000-memory.dmp	family_vidar_v7
behavioral1/memory/4684-107-0x0000000000E40000-0x0000000001086000-memory.dmp	family_vidar_v7
behavioral1/memory/4684-108-0x0000000000E40000-0x0000000001086000-memory.dmp	family_vidar_v7
behavioral1/memory/4684-118-0x0000000000E40000-0x0000000001086000-memory.dmp	family_vidar_v7
behavioral1/memory/4684-119-0x0000000000E40000-0x0000000001086000-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
Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs
Run Powershell and hide display window.
execution

PowerShell
T1059.001

Processes:

powershell.exe

pid process

892 powershell.exe
Downloads MZ/PE file
Executes dropped EXE 2 IoCs

Processes:

payload_pump_Q7IR.exepayload_pump_Q7IR.exe

pid process

2464 payload_pump_Q7IR.exe
4684 payload_pump_Q7IR.exe
Loads dropped DLL 2 IoCs

Processes:

payload_pump_Q7IR.exe

pid process

4684 payload_pump_Q7IR.exe
4684 payload_pump_Q7IR.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
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

pid	process
892	powershell.exe

pid	process
2464	payload_pump_Q7IR.exe
4684	payload_pump_Q7IR.exe

pid	process
4684	payload_pump_Q7IR.exe
4684	payload_pump_Q7IR.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

payload_pump_Q7IR.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2551177587-3778486488-1329702901-1000\Software\Microsoft\Windows\CurrentVersion\Run\TopicLT = "C:\\Users\\Admin\\Documents\\OOOpLLC\\Tuniut.exe"	payload_pump_Q7IR.exe

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 NtCreateThreadExHideFromDebugger 1 IoCs

Processes:

payload_pump_Q7IR.exe

pid process

2464 payload_pump_Q7IR.exe
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:

payload_pump_Q7IR.exe

description ioc process

Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString payload_pump_Q7IR.exe
Delays execution with timeout.exe 1 IoCs
evasion

Processes:

timeout.exe

pid process

1892 timeout.exe
Suspicious behavior: EnumeratesProcesses 6 IoCs

Processes:

powershell.exepayload_pump_Q7IR.exe

pid process

892 powershell.exe
892 powershell.exe
4684 payload_pump_Q7IR.exe
4684 payload_pump_Q7IR.exe
4684 payload_pump_Q7IR.exe
4684 payload_pump_Q7IR.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

powershell.exe

description pid process

Token: SeDebugPrivilege 892 powershell.exe

pid	process
2464	payload_pump_Q7IR.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	payload_pump_Q7IR.exe

pid	process
1892	timeout.exe

pid	process
892	powershell.exe
892	powershell.exe
4684	payload_pump_Q7IR.exe
4684	payload_pump_Q7IR.exe
4684	payload_pump_Q7IR.exe
4684	payload_pump_Q7IR.exe

description	pid	process
Token: SeDebugPrivilege	892	powershell.exe

Suspicious use of WriteProcessMemory 19 IoCs

Processes:

Wefaceswap.execmd.exepowershell.exepayload_pump_Q7IR.exepayload_pump_Q7IR.execmd.exe

description	pid	process	target process
PID 2632 wrote to memory of 340	2632	Wefaceswap.exe	cmd.exe
PID 2632 wrote to memory of 340	2632	Wefaceswap.exe	cmd.exe
PID 340 wrote to memory of 892	340	cmd.exe	powershell.exe
PID 340 wrote to memory of 892	340	cmd.exe	powershell.exe
PID 892 wrote to memory of 2464	892	powershell.exe	payload_pump_Q7IR.exe
PID 892 wrote to memory of 2464	892	powershell.exe	payload_pump_Q7IR.exe
PID 892 wrote to memory of 2464	892	powershell.exe	payload_pump_Q7IR.exe
PID 2464 wrote to memory of 4684	2464	payload_pump_Q7IR.exe	payload_pump_Q7IR.exe
PID 2464 wrote to memory of 4684	2464	payload_pump_Q7IR.exe	payload_pump_Q7IR.exe
PID 2464 wrote to memory of 4684	2464	payload_pump_Q7IR.exe	payload_pump_Q7IR.exe
PID 2464 wrote to memory of 4684	2464	payload_pump_Q7IR.exe	payload_pump_Q7IR.exe
PID 2464 wrote to memory of 4684	2464	payload_pump_Q7IR.exe	payload_pump_Q7IR.exe
PID 2464 wrote to memory of 4684	2464	payload_pump_Q7IR.exe	payload_pump_Q7IR.exe
PID 4684 wrote to memory of 4484	4684	payload_pump_Q7IR.exe	cmd.exe
PID 4684 wrote to memory of 4484	4684	payload_pump_Q7IR.exe	cmd.exe
PID 4684 wrote to memory of 4484	4684	payload_pump_Q7IR.exe	cmd.exe
PID 4484 wrote to memory of 1892	4484	cmd.exe	timeout.exe
PID 4484 wrote to memory of 1892	4484	cmd.exe	timeout.exe
PID 4484 wrote to memory of 1892	4484	cmd.exe	timeout.exe

C:\Users\Admin\AppData\Local\Temp\Wefaceswap.exe
"C:\Users\Admin\AppData\Local\Temp\Wefaceswap.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2632

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /d /s /c "powershell.exe -ExecutionPolicy Bypass -Command "& { . 'C:\Users\Admin\AppData\Local\mEifUllJYx\LwVm.ps1'; StartWork -path "C:\Users\Admin\AppData\Local\JhkQgLkOZS\ujieR\payload_pump_Q7IR.exe" }" -WindowStyle Hidden"
2⤵
- Suspicious use of WriteProcessMemory
PID:340

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
powershell.exe -ExecutionPolicy Bypass -Command "& { . 'C:\Users\Admin\AppData\Local\mEifUllJYx\LwVm.ps1'; StartWork -path "C:\Users\Admin\AppData\Local\JhkQgLkOZS\ujieR\payload_pump_Q7IR.exe" }" -WindowStyle Hidden
3⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:892

C:\Users\Admin\AppData\Local\JhkQgLkOZS\ujieR\payload_pump_Q7IR.exe
"C:\Users\Admin\AppData\Local\JhkQgLkOZS\ujieR\payload_pump_Q7IR.exe"
4⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of NtCreateThreadExHideFromDebugger
- Suspicious use of WriteProcessMemory
PID:2464

C:\Users\Admin\AppData\Local\JhkQgLkOZS\ujieR\payload_pump_Q7IR.exe
"C:\Users\Admin\AppData\Local\JhkQgLkOZS\ujieR\payload_pump_Q7IR.exe"
5⤵
- Executes dropped EXE
- Loads dropped DLL
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4684

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c timeout /t 10 & rd /s /q "C:\ProgramData\IDHJEBGIEBFI" & exit
6⤵
- Suspicious use of WriteProcessMemory
PID:4484

C:\Windows\SysWOW64\timeout.exe
timeout /t 10
7⤵
- Delays execution with timeout.exe
PID:1892

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

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

Replay Monitor

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Downloads

C:\ProgramData\IDHJEBGIEBFI\VCRUNT~1.DLL
Filesize
78KB

MD5
a37ee36b536409056a86f50e67777dd7

SHA1
1cafa159292aa736fc595fc04e16325b27cd6750

SHA256
8934aaeb65b6e6d253dfe72dea5d65856bd871e989d5d3a2a35edfe867bb4825

SHA512
3a7c260646315cf8c01f44b2ec60974017496bd0d80dd055c7e43b707cadba2d63aab5e0efd435670aa77886ed86368390d42c4017fc433c3c4b9d1c47d0f356

Download Submit
C:\ProgramData\IDHJEBGIEBFI\mozglue.dll
Filesize
593KB

MD5
c8fd9be83bc728cc04beffafc2907fe9

SHA1
95ab9f701e0024cedfbd312bcfe4e726744c4f2e

SHA256
ba06a6ee0b15f5be5c4e67782eec8b521e36c107a329093ec400fe0404eb196a

SHA512
fbb446f4a27ef510e616caad52945d6c9cc1fd063812c41947e579ec2b54df57c6dc46237ded80fca5847f38cbe1747a6c66a13e2c8c19c664a72be35eb8b040

Download Submit
C:\ProgramData\IDHJEBGIEBFI\msvcp140.dll
Filesize
439KB

MD5
5ff1fca37c466d6723ec67be93b51442

SHA1
34cc4e158092083b13d67d6d2bc9e57b798a303b

SHA256
5136a49a682ac8d7f1ce71b211de8688fce42ed57210af087a8e2dbc8a934062

SHA512
4802ef62630c521d83a1d333969593fb00c9b38f82b4d07f70fbd21f495fea9b3f67676064573d2c71c42bc6f701992989742213501b16087bb6110e337c7546

Download Submit
C:\ProgramData\IDHJEBGIEBFI\nss3.dll
Filesize
2.0MB

MD5
1cc453cdf74f31e4d913ff9c10acdde2

SHA1
6e85eae544d6e965f15fa5c39700fa7202f3aafe

SHA256
ac5c92fe6c51cfa742e475215b83b3e11a4379820043263bf50d4068686c6fa5

SHA512
dd9ff4e06b00dc831439bab11c10e9b2ae864ea6e780d3835ea7468818f35439f352ef137da111efcdf2bb6465f6ca486719451bf6cf32c6a4420a56b1d64571

Download Submit
C:\ProgramData\IDHJEBGIEBFI\softokn3.dll
Filesize
251KB

MD5
4e52d739c324db8225bd9ab2695f262f

SHA1
71c3da43dc5a0d2a1941e874a6d015a071783889

SHA256
74ebbac956e519e16923abdc5ab8912098a4f64e38ddcb2eae23969f306afe5a

SHA512
2d4168a69082a9192b9248f7331bd806c260478ff817567df54f997d7c3c7d640776131355401e4bdb9744e246c36d658cb24b18de67d8f23f10066e5fe445f6

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_r0t0gd05.jht.ps1
Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\mEifUllJYx\LwVm.ps1
Filesize
219B

MD5
0c369a96d03b668daf4b82f42897762d

SHA1
a683048209043670fd41354b049f59492b63efd3

SHA256
ede7669162acab81c614020c588f11d7ad0d4da7f159efff72c9eeeff6c2f404

SHA512
ee2c3b4c062235e2d3ea3a1cbba76e174412e48fa2851192222c6dec86b84f50507f01689a2015eaa7d704816919d16271f6fe7c646d3126f3638c755431c745

Download Submit
memory/892-29-0x00007FFF0D8F0000-0x00007FFF0E3B2000-memory.dmp

Filesize
10.8MB

Download
memory/892-17-0x000001C1B3F70000-0x000001C1B3F92000-memory.dmp

Filesize
136KB

Download
memory/892-21-0x00007FFF0D8F0000-0x00007FFF0E3B2000-memory.dmp

Filesize
10.8MB

Download
memory/892-22-0x00007FFF0D8F0000-0x00007FFF0E3B2000-memory.dmp

Filesize
10.8MB

Download
memory/892-24-0x00007FFF0D8F0000-0x00007FFF0E3B2000-memory.dmp

Filesize
10.8MB

Download
memory/892-11-0x00007FFF0D8F3000-0x00007FFF0D8F5000-memory.dmp

Filesize
8KB

Download
memory/2464-30-0x0000000000400000-0x00000000006C3000-memory.dmp

Filesize
2.8MB

Download
memory/2464-32-0x0000000000400000-0x00000000006C3000-memory.dmp

Filesize
2.8MB

Download
memory/2464-31-0x0000000000400000-0x00000000006C3000-memory.dmp

Filesize
2.8MB

Download
memory/2464-37-0x0000000000400000-0x00000000006C3000-memory.dmp

Filesize
2.8MB

Download
memory/4684-56-0x0000000000E40000-0x0000000001086000-memory.dmp

Filesize
2.3MB

Download
memory/4684-55-0x0000000000E40000-0x0000000001086000-memory.dmp

Filesize
2.3MB

Download
memory/4684-72-0x0000000000E40000-0x0000000001086000-memory.dmp

Filesize
2.3MB

Download
memory/4684-73-0x0000000000E40000-0x0000000001086000-memory.dmp

Filesize
2.3MB

Download
memory/4684-41-0x0000000011340000-0x000000001159F000-memory.dmp

Filesize
2.4MB

Download
memory/4684-39-0x0000000000E40000-0x0000000001086000-memory.dmp

Filesize
2.3MB

Download
memory/4684-107-0x0000000000E40000-0x0000000001086000-memory.dmp

Filesize
2.3MB

Download
memory/4684-108-0x0000000000E40000-0x0000000001086000-memory.dmp

Filesize
2.3MB

Download
memory/4684-118-0x0000000000E40000-0x0000000001086000-memory.dmp

Filesize
2.3MB

Download
memory/4684-119-0x0000000000E40000-0x0000000001086000-memory.dmp

Filesize
2.3MB

Download
memory/4684-38-0x0000000000E40000-0x0000000001086000-memory.dmp

Filesize
2.3MB

Download
memory/4684-36-0x0000000000E40000-0x0000000001086000-memory.dmp

Filesize
2.3MB

Download
memory/4684-33-0x00000000000D0000-0x00000000000D1000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads