stealc | 3aeea541c4fcdbf46b3e904522682e638b9ca7a981379864a72cf2274654419e

Analysis

max time kernel
141s
max time network
125s
platform
windows7_x64
resource
win7-20240508-en
resource tags

arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
submitted
15/06/2024, 12:05

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General

Target

setup.exe
Size

316KB
MD5

c637e5ecf625b72f4bef9d28cd81d612
SHA1

a2c1329d290e508ee9fd0eb81e7f25d57e450f8c
SHA256

111c56593668be63e1e0c79a2d33d9e2d49cdf0c5100663c72045bc6b76e9fe6
SHA512

727d78bab4fab3674eec92ca5f07df6a0095ab3b973dd227c599c70e8493592bb53bb9208cc6270713283ef0065acfad3203ddcf4dcb6d43f8727f09ceaaf2e4
SSDEEP

6144:VzsRSKkhKKXDD2mTLGxelHJ+SBae3VFpSX:6VkhZWEGxelH0SBtfpS

Score

10^/10

stealc vidar stealer

Malware Config

Extracted

Family

stealc

rc4.plain

Signatures

Detect Vidar Stealer 2 IoCs

stealer

resource	yara_rule
behavioral7/memory/2076-28-0x0000000000D30000-0x000000000147B000-memory.dmp	family_vidar_v7
behavioral7/memory/2076-35-0x0000000000D30000-0x000000000147B000-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

Loads dropped DLL 7 IoCs

pid	Process
2032	netsh.exe
2076	coml.au3
2472	WerFault.exe
2472	WerFault.exe
2472	WerFault.exe
2472	WerFault.exe
2472	WerFault.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1924 set thread context of 2032	1924	setup.exe	28

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2472	2076	WerFault.exe	30

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1924	setup.exe
1924	setup.exe
2032	netsh.exe
2032	netsh.exe

Suspicious behavior: MapViewOfSection 2 IoCs

pid	Process
1924	setup.exe
2032	netsh.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 1924 wrote to memory of 2032	1924	setup.exe	28
PID 1924 wrote to memory of 2032	1924	setup.exe	28
PID 1924 wrote to memory of 2032	1924	setup.exe	28
PID 1924 wrote to memory of 2032	1924	setup.exe	28
PID 1924 wrote to memory of 2032	1924	setup.exe	28
PID 2032 wrote to memory of 2076	2032	netsh.exe	30
PID 2032 wrote to memory of 2076	2032	netsh.exe	30
PID 2032 wrote to memory of 2076	2032	netsh.exe	30
PID 2032 wrote to memory of 2076	2032	netsh.exe	30
PID 2032 wrote to memory of 2076	2032	netsh.exe	30
PID 2032 wrote to memory of 2076	2032	netsh.exe	30
PID 2076 wrote to memory of 2472	2076	coml.au3	31
PID 2076 wrote to memory of 2472	2076	coml.au3	31
PID 2076 wrote to memory of 2472	2076	coml.au3	31
PID 2076 wrote to memory of 2472	2076	coml.au3	31

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:1924
- C:\Windows\SysWOW64\netsh.exe
  C:\Windows\SysWOW64\netsh.exe
  2⤵
  - Loads dropped DLL
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of WriteProcessMemory
  PID:2032
- - C:\Users\Admin\AppData\Local\Temp\coml.au3
    C:\Users\Admin\AppData\Local\Temp\coml.au3
    3⤵
    - Loads dropped DLL
    - Suspicious use of WriteProcessMemory
    PID:2076
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2076 -s 148
      4⤵
      Loads dropped DLL
      Program crash
      PID:2472

Network

MITRE ATT&CK Matrix

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Downloads

C:\Users\Admin\AppData\Local\Temp\a19c45a1

Filesize
6.8MB

MD5
4002545e835c468799e0f23fa9d72ee1

SHA1
f654bdb5a2f40bc9d11defdfded3432c6a4c1224

SHA256
d55c77f86653636c3bc449adcdc1aa6ff75158da1e4fef5331e40d09c99ffd2c

SHA512
dd304e36bb91d840e67b8b9a7ab28e6f77a420cf2fdc8864ae31065a5fefd64af9f317613e1211fe3ca2483e9c1bd50234957f8ab2ab2562e177f44d7be4da06

Download Submit
\Users\Admin\AppData\Local\Temp\coml.au3

Filesize
872KB

MD5
c56b5f0201a3b3de53e561fe76912bfd

SHA1
2a4062e10a5de813f5688221dbeb3f3ff33eb417

SHA256
237d1bca6e056df5bb16a1216a434634109478f882d3b1d58344c801d184f95d

SHA512
195b98245bb820085ae9203cdb6d470b749d1f228908093e8606453b027b7d7681ccd7952e30c2f5dd40f8f0b999ccfc60ebb03419b574c08de6816e75710d2c

Download Submit
memory/1924-10-0x000007FEF5438000-0x000007FEF5439000-memory.dmp

Filesize
4KB

Download
memory/1924-11-0x000007FEF5421000-0x000007FEF5439000-memory.dmp

Filesize
96KB

Download
memory/1924-13-0x000007FEF5421000-0x000007FEF5439000-memory.dmp

Filesize
96KB

Download
memory/2032-18-0x000000007317E000-0x0000000073180000-memory.dmp

Filesize
8KB

Download
memory/2032-17-0x0000000073170000-0x00000000732E4000-memory.dmp

Filesize
1.5MB

Download
memory/2032-21-0x0000000073170000-0x00000000732E4000-memory.dmp

Filesize
1.5MB

Download
memory/2032-15-0x0000000076E70000-0x0000000077019000-memory.dmp

Filesize
1.7MB

Download
memory/2032-26-0x0000000073170000-0x00000000732E4000-memory.dmp

Filesize
1.5MB

Download
memory/2076-25-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

Filesize
4KB

Download
memory/2076-24-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

Filesize
4KB

Download
memory/2076-28-0x0000000000D30000-0x000000000147B000-memory.dmp

Filesize
7.3MB

Download
memory/2076-35-0x0000000000D30000-0x000000000147B000-memory.dmp

Filesize
7.3MB

Download