stealc | a575539b1d321f7608c041ce115828d7d3615f8011e0f879e39bd83b8ef2bd8c

Analysis

max time kernel
79s
max time network
102s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
15-06-2024 01:57

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General

Target

SETAP_9090__Pa$$W0rdS~!!/pythonw.exe
Size

94KB
MD5

9a4cc0d8e7007f7ef20ca585324e0739
SHA1

f3e5a2e477cac4bab85940a2158eed78f2d74441
SHA256

040d121a3179f49cd3f33f4bc998bc8f78b7f560bfd93f279224d69e76a06e92
SHA512

54636a48141804112f5b4f2fc70cb7c959a041e5743aeedb5184091b51daa1d1a03f0016e8299c0d56d924c6c8ae585e4fc864021081ffdf1e6f3eab11dd43b3
SSDEEP

1536:9M/AhIxHHWMpdPa5wiE21M8kJIGFvb1Cwn/ZDs5yf:9M4SwMpdCq/IM8uIGfV/ZDso

Score

10^/10

stealc vidar discovery spyware stealer

Malware Config

Extracted

Family

stealc

rc4.plain

Signatures

Detect Vidar Stealer 2 IoCs

stealer

Processes:

resource	yara_rule
behavioral4/memory/2628-29-0x0000000000E30000-0x000000000157C000-memory.dmp	family_vidar_v7
behavioral4/memory/2628-44-0x0000000000E30000-0x000000000157C000-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

Detects Windows executables referencing non-Windows User-Agents 2 IoCs

Processes:

resource	yara_rule
behavioral4/memory/2628-29-0x0000000000E30000-0x000000000157C000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
behavioral4/memory/2628-44-0x0000000000E30000-0x000000000157C000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA

Detects binaries and memory artifacts referencing sandbox DLLs typically observed in sandbox evasion 2 IoCs

Processes:

resource	yara_rule
behavioral4/memory/2628-29-0x0000000000E30000-0x000000000157C000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_SandboxHookingDLL
behavioral4/memory/2628-44-0x0000000000E30000-0x000000000157C000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_SandboxHookingDLL

Detects executables containing potential Windows Defender anti-emulation checks 2 IoCs

Processes:

resource	yara_rule
behavioral4/memory/2628-29-0x0000000000E30000-0x000000000157C000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_WindDefender_AntiEmaulation
behavioral4/memory/2628-44-0x0000000000E30000-0x000000000157C000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_WindDefender_AntiEmaulation

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 computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.

Query Registry
T1012

System Information Discovery
T1082

Processes:

coml.au3

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation coml.au3
Suspicious use of SetThreadContext 1 IoCs

Processes:

pythonw.exe

description pid process target process

PID 4804 set thread context of 1824 4804 pythonw.exe netsh.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
Executes dropped EXE 1 IoCs

Processes:

pythonw.exe

pid process

4804 pythonw.exe
Loads dropped DLL 3 IoCs

Processes:

pythonw.execoml.au3

pid process

4804 pythonw.exe
4804 pythonw.exe
2628 coml.au3
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:

coml.au3

description ioc process

Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString coml.au3
Delays execution with timeout.exe 1 IoCs
evasion

Processes:

timeout.exe

pid process

4404 timeout.exe
Suspicious behavior: EnumeratesProcesses 7 IoCs

Processes:

pythonw.exepythonw.exenetsh.execoml.au3

pid process

2668 pythonw.exe
4804 pythonw.exe
4804 pythonw.exe
1824 netsh.exe
1824 netsh.exe
2628 coml.au3
2628 coml.au3
Suspicious behavior: MapViewOfSection 2 IoCs

Processes:

pythonw.exenetsh.exe

pid process

4804 pythonw.exe
1824 netsh.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation	coml.au3

description	pid	process	target process
PID 4804 set thread context of 1824	4804	pythonw.exe	netsh.exe

pid	process
4804	pythonw.exe

pid	process
4804	pythonw.exe
4804	pythonw.exe
2628	coml.au3

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	coml.au3

pid	process
4404	timeout.exe

pid	process
2668	pythonw.exe
4804	pythonw.exe
4804	pythonw.exe
1824	netsh.exe
1824	netsh.exe
2628	coml.au3
2628	coml.au3

pid	process
4804	pythonw.exe
1824	netsh.exe

Suspicious use of WriteProcessMemory 17 IoCs

Processes:

pythonw.exepythonw.exenetsh.execoml.au3cmd.exe

description	pid	process	target process
PID 2668 wrote to memory of 4804	2668	pythonw.exe	pythonw.exe
PID 2668 wrote to memory of 4804	2668	pythonw.exe	pythonw.exe
PID 4804 wrote to memory of 1824	4804	pythonw.exe	netsh.exe
PID 4804 wrote to memory of 1824	4804	pythonw.exe	netsh.exe
PID 4804 wrote to memory of 1824	4804	pythonw.exe	netsh.exe
PID 4804 wrote to memory of 1824	4804	pythonw.exe	netsh.exe
PID 1824 wrote to memory of 2628	1824	netsh.exe	coml.au3
PID 1824 wrote to memory of 2628	1824	netsh.exe	coml.au3
PID 1824 wrote to memory of 2628	1824	netsh.exe	coml.au3
PID 1824 wrote to memory of 2628	1824	netsh.exe	coml.au3
PID 1824 wrote to memory of 2628	1824	netsh.exe	coml.au3
PID 2628 wrote to memory of 5108	2628	coml.au3	cmd.exe
PID 2628 wrote to memory of 5108	2628	coml.au3	cmd.exe
PID 2628 wrote to memory of 5108	2628	coml.au3	cmd.exe
PID 5108 wrote to memory of 4404	5108	cmd.exe	timeout.exe
PID 5108 wrote to memory of 4404	5108	cmd.exe	timeout.exe
PID 5108 wrote to memory of 4404	5108	cmd.exe	timeout.exe

C:\Users\Admin\AppData\Local\Temp\SETAP_9090__Pa$$W0rdS~!!\pythonw.exe
"C:\Users\Admin\AppData\Local\Temp\SETAP_9090__Pa$$W0rdS~!!\pythonw.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2668

C:\Users\Admin\AppData\Roaming\Httva\pythonw.exe
C:\Users\Admin\AppData\Roaming\Httva\pythonw.exe
2⤵
- Suspicious use of SetThreadContext
- Executes dropped EXE
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:4804

C:\Windows\SysWOW64\netsh.exe
C:\Windows\SysWOW64\netsh.exe
3⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:1824

C:\Users\Admin\AppData\Local\Temp\coml.au3
C:\Users\Admin\AppData\Local\Temp\coml.au3
4⤵
- Checks computer location settings
- Loads dropped DLL
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2628

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c timeout /t 10 & del /f /q "C:\Users\Admin\AppData\Local\Temp\coml.au3" & rd /s /q "C:\ProgramData\BAECFHJEBAAF" & exit
5⤵
- Suspicious use of WriteProcessMemory
PID:5108

C:\Windows\SysWOW64\timeout.exe
timeout /t 10
6⤵
- Delays execution with timeout.exe
PID:4404

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

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Downloads

C:\Users\Admin\AppData\Local\Temp\9ed5ce50
Filesize
6.8MB

MD5
d81f39cdad84738e004757bc319c03b8

SHA1
23f374ee188879ef7f0e05177e38fcd9d04d4b82

SHA256
51b26d1f5b676ad1cb3b5a13a958ea0635c35ea44883ab3992d29c1af31b36b9

SHA512
c7a7fb4db6d0222f240812df2bb94aa15e2063fbb4da83d2aa09675b48f8aab9391efc814b85f881b9494dc1691bb0369c4f0d375594729db879ccbc9082d91d

Download Submit
C:\Users\Admin\AppData\Local\Temp\coml.au3
Filesize
872KB

MD5
c56b5f0201a3b3de53e561fe76912bfd

SHA1
2a4062e10a5de813f5688221dbeb3f3ff33eb417

SHA256
237d1bca6e056df5bb16a1216a434634109478f882d3b1d58344c801d184f95d

SHA512
195b98245bb820085ae9203cdb6d470b749d1f228908093e8606453b027b7d7681ccd7952e30c2f5dd40f8f0b999ccfc60ebb03419b574c08de6816e75710d2c

Download Submit
C:\Users\Admin\AppData\Roaming\Httva\VCRUNTIME140.dll
Filesize
106KB

MD5
49c96cecda5c6c660a107d378fdfc3d4

SHA1
00149b7a66723e3f0310f139489fe172f818ca8e

SHA256
69320f278d90efaaeb67e2a1b55e5b0543883125834c812c8d9c39676e0494fc

SHA512
e09e072f3095379b0c921d41d6e64f4f1cd78400594a2317cfb5e5dca03dedb5a8239ed89905c9e967d1acb376b0585a35addf6648422c7ddb472ce38b1ba60d

Download Submit
C:\Users\Admin\AppData\Roaming\Httva\ear.eml
Filesize
68KB

MD5
58b327325f4203803325c7901fb16ccd

SHA1
6fa0f727ebdaf965744ecf0c67cc6b3fcc745620

SHA256
83477ae6d1da7c9f4a88f067b9f15691c66c51c4c82078ab468cc0c04d0d426c

SHA512
a1c85c473490f4eb5008a45a8af9909cb1caf0dd84602ed7ea08c593091a979d0814cd3c7a2cf6681790162e13315f482a05f53477428b1c946e2d96740eb307

Download Submit
C:\Users\Admin\AppData\Roaming\Httva\python310.dll
Filesize
4.3MB

MD5
e31064ef0869d01beb4841879a87a391

SHA1
7c26d7c27215afa8304df18a7a6bc4a03eaf70c5

SHA256
2c9b70db08be7e17ee33130cc8ace2d02d381f7fd9a5cc3b52be9a2e4727c006

SHA512
50036e765f8c95f8511f6961888e42378225c98cf0f57423c3c91a6b154d2220be251e38f1ab04f59cace563c6a8701b08097762f71f875b371655dbdb560622

Download Submit
C:\Users\Admin\AppData\Roaming\Httva\pythonw.exe
Filesize
94KB

MD5
9a4cc0d8e7007f7ef20ca585324e0739

SHA1
f3e5a2e477cac4bab85940a2158eed78f2d74441

SHA256
040d121a3179f49cd3f33f4bc998bc8f78b7f560bfd93f279224d69e76a06e92

SHA512
54636a48141804112f5b4f2fc70cb7c959a041e5743aeedb5184091b51daa1d1a03f0016e8299c0d56d924c6c8ae585e4fc864021081ffdf1e6f3eab11dd43b3

Download Submit
C:\Users\Admin\AppData\Roaming\Httva\towel.vhd
Filesize
6.2MB

MD5
5b9a5e459770a6dd896c725ba08a1e95

SHA1
546e8af7d2c72661ff63e9f57ab3ff009b863041

SHA256
fff2204de2ce109fe1d8e014e9508368c38d40d9f863678bcf3129978f9db424

SHA512
cc4673cb0b411a26a89a9c22241b5fca0107a11ecf1c8dfad1ec65060e64894fc7b2668cfd8ba1f18236b67fb21985fb8cbf5c3c7213d5040ecbad59d9ef6c22

Download Submit
memory/1824-22-0x000000007450E000-0x0000000074510000-memory.dmp

Filesize
8KB

Download
memory/1824-27-0x0000000074501000-0x000000007450F000-memory.dmp

Filesize
56KB

Download
memory/1824-23-0x0000000074501000-0x000000007450F000-memory.dmp

Filesize
56KB

Download
memory/1824-20-0x00007FFFBC790000-0x00007FFFBC985000-memory.dmp

Filesize
2.0MB

Download
memory/2628-44-0x0000000000E30000-0x000000000157C000-memory.dmp

Filesize
7.3MB

Download
memory/2628-29-0x0000000000E30000-0x000000000157C000-memory.dmp

Filesize
7.3MB

Download
memory/2628-31-0x00007FFFBC790000-0x00007FFFBC985000-memory.dmp

Filesize
2.0MB

Download
memory/2628-32-0x0000000061E00000-0x0000000061EF3000-memory.dmp

Filesize
972KB

Download
memory/2668-0-0x00007FFF9E640000-0x00007FFF9E7B2000-memory.dmp

Filesize
1.4MB

Download
memory/4804-16-0x00007FFF9EA60000-0x00007FFF9EBD2000-memory.dmp

Filesize
1.4MB

Download
memory/4804-15-0x00007FFF9EA78000-0x00007FFF9EA79000-memory.dmp

Filesize
4KB

Download
memory/4804-14-0x00007FFF9EA60000-0x00007FFF9EBD2000-memory.dmp

Filesize
1.4MB

Download
memory/4804-17-0x00007FFF9EA60000-0x00007FFF9EBD2000-memory.dmp

Filesize
1.4MB

Download