stealc | 25cbba8cb4b96c8b9e6c8490c2460eb8fecb3b6dd4eb8fc2a06392cb018dda5b

Analysis

max time kernel
141s
max time network
120s
platform
windows7_x64
resource
win7-20240220-en
resource tags

arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
submitted
15/06/2024, 01:16

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

##!!SetUp_5566_Pa$sW0rd$$!!/Setup.exe
Size

5.4MB
MD5

ad2735f096925010a53450cb4178c89e
SHA1

c6d65163c6315a642664f4eaec0fae9528549bfe
SHA256

4e775b5fafb4e6d89a4694f8694d2b8b540534bd4a52ff42f70095f1c929160e
SHA512

1868b22a7c5cba89545b06f010c09c5418b3d86039099d681eee9567c47208fdba3b89c6251cf03c964c58c805280d45ba9c3533125f6bd3e0bc067477e03ab9
SSDEEP

98304:o/zx+riUDpJowboU+XEsumY2XW6jBYeZ1ER:2x+riUDwUj12X1tY5

Score

10^/10

stealc vidar stealer

Malware Config

Extracted

Family

stealc

rc4.plain

Signatures

Detect Vidar Stealer 2 IoCs

stealer

resource	yara_rule
behavioral5/memory/2424-30-0x0000000000B60000-0x00000000012AC000-memory.dmp	family_vidar_v7
behavioral5/memory/2424-39-0x0000000000B60000-0x00000000012AC000-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

resource	yara_rule
behavioral5/memory/2424-30-0x0000000000B60000-0x00000000012AC000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
behavioral5/memory/2424-39-0x0000000000B60000-0x00000000012AC000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA

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

resource	yara_rule
behavioral5/memory/2424-30-0x0000000000B60000-0x00000000012AC000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_SandboxHookingDLL
behavioral5/memory/2424-39-0x0000000000B60000-0x00000000012AC000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_SandboxHookingDLL

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

resource	yara_rule
behavioral5/memory/2424-30-0x0000000000B60000-0x00000000012AC000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_WindDefender_AntiEmaulation
behavioral5/memory/2424-39-0x0000000000B60000-0x00000000012AC000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_WindDefender_AntiEmaulation

Loads dropped DLL 9 IoCs

pid	Process
2156	netsh.exe
2424	coml.au3
2408	WerFault.exe
2408	WerFault.exe
2408	WerFault.exe
2408	WerFault.exe
2408	WerFault.exe
2408	WerFault.exe
2408	WerFault.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2172 set thread context of 2156	2172	Setup.exe	28

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2408	2424	WerFault.exe	30

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2172	Setup.exe
2172	Setup.exe
2156	netsh.exe
2156	netsh.exe

Suspicious behavior: MapViewOfSection 2 IoCs

pid	Process
2172	Setup.exe
2156	netsh.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 2172 wrote to memory of 2156	2172	Setup.exe	28
PID 2172 wrote to memory of 2156	2172	Setup.exe	28
PID 2172 wrote to memory of 2156	2172	Setup.exe	28
PID 2172 wrote to memory of 2156	2172	Setup.exe	28
PID 2172 wrote to memory of 2156	2172	Setup.exe	28
PID 2156 wrote to memory of 2424	2156	netsh.exe	30
PID 2156 wrote to memory of 2424	2156	netsh.exe	30
PID 2156 wrote to memory of 2424	2156	netsh.exe	30
PID 2156 wrote to memory of 2424	2156	netsh.exe	30
PID 2156 wrote to memory of 2424	2156	netsh.exe	30
PID 2156 wrote to memory of 2424	2156	netsh.exe	30
PID 2424 wrote to memory of 2408	2424	coml.au3	31
PID 2424 wrote to memory of 2408	2424	coml.au3	31
PID 2424 wrote to memory of 2408	2424	coml.au3	31
PID 2424 wrote to memory of 2408	2424	coml.au3	31

C:\Users\Admin\AppData\Local\Temp\##!!SetUp_5566_Pa$sW0rd$$!!\Setup.exe
"C:\Users\Admin\AppData\Local\Temp\##!!SetUp_5566_Pa$sW0rd$$!!\Setup.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:2172
- 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:2156
- - 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:2424
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2424 -s 148
      4⤵
      Loads dropped DLL
      Program crash
      PID:2408

Network

MITRE ATT&CK Matrix

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\a3c79cf3

Filesize
6.8MB

MD5
b66f9dad8c3785e36808e473e8344c4c

SHA1
3cfd2c49593814d539fbf0d2697a37b0eabac10f

SHA256
c8ea78c1ed06141697c20a039499b17d29a5f4bc4d852ab9030258012a79702a

SHA512
7db9146e37fd7e4738268adab811c6bbb6354b5c40971a28a048be37d13606870930aeacadc755ecbd0be46825f126ca0f75ab906fe031a965c13f2057bc2b70

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

Filesize
872KB

MD5
c56b5f0201a3b3de53e561fe76912bfd

SHA1
2a4062e10a5de813f5688221dbeb3f3ff33eb417

SHA256
237d1bca6e056df5bb16a1216a434634109478f882d3b1d58344c801d184f95d

SHA512
195b98245bb820085ae9203cdb6d470b749d1f228908093e8606453b027b7d7681ccd7952e30c2f5dd40f8f0b999ccfc60ebb03419b574c08de6816e75710d2c

Download Submit
memory/2156-20-0x000000007316E000-0x0000000073170000-memory.dmp

Filesize
8KB

Download
memory/2156-17-0x0000000076E60000-0x0000000077009000-memory.dmp

Filesize
1.7MB

Download
memory/2156-19-0x0000000073160000-0x00000000732D4000-memory.dmp

Filesize
1.5MB

Download
memory/2156-21-0x0000000073160000-0x00000000732D4000-memory.dmp

Filesize
1.5MB

Download
memory/2156-28-0x0000000073160000-0x00000000732D4000-memory.dmp

Filesize
1.5MB

Download
memory/2172-14-0x000007FEF5600000-0x000007FEF5758000-memory.dmp

Filesize
1.3MB

Download
memory/2172-13-0x000007FEF5600000-0x000007FEF5758000-memory.dmp

Filesize
1.3MB

Download
memory/2172-0-0x000007FEF5600000-0x000007FEF5758000-memory.dmp

Filesize
1.3MB

Download
memory/2172-12-0x000007FEF5618000-0x000007FEF5619000-memory.dmp

Filesize
4KB

Download
memory/2424-27-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

Filesize
4KB

Download
memory/2424-26-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

Filesize
4KB

Download
memory/2424-30-0x0000000000B60000-0x00000000012AC000-memory.dmp

Filesize
7.3MB

Download
memory/2424-39-0x0000000000B60000-0x00000000012AC000-memory.dmp

Filesize
7.3MB

Download