stealc | c015d37754dab44ada580faf04f4fc21980f387c0f8b81dbd71b5493d6c6a796

Analysis

max time kernel
142s
max time network
122s
platform
windows7_x64
resource
win7-20240508-en
resource tags

arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
submitted
16/06/2024, 01:01

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General

Target
#!~#0Pen_9898_P@$SW0rd~!!$/Setup.exe
Size 5.4MB
Sample240616-bdmkfswfmm
SHA256 4e775b5fafb4e6d89a4694f8694d2b8b540534bd4a52ff42f70095f1c929160e
MD5 ad2735f096925010a53450cb4178c89e
SHA1 c6d65163c6315a642664f4eaec0fae9528549bfe
SHA512 1868b22a7c5cba89545b06f010c09c5418b3d86039099d681eee9567c47208fdba3b89c6251cf03c964c58c805280d45ba9c3533125f6bd3e0bc067477e03ab9
SSDEEP 98304:o/zx+riUDpJowboU+XEsumY2XW6jBYeZ1ER:2x+riUDwUj12X1tY5
MD5 SHA1 SHA512 SSDEEP

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/2900-30-0x00000000005D0000-0x0000000000D1B000-memory.dmp	family_vidar_v7
behavioral5/memory/2900-37-0x00000000005D0000-0x0000000000D1B000-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
796	netsh.exe
2900	coml.au3
2652	WerFault.exe
2652	WerFault.exe
2652	WerFault.exe
2652	WerFault.exe
2652	WerFault.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2216 set thread context of 796	2216	Setup.exe	28

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2652	2900	WerFault.exe	30

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2216	Setup.exe
2216	Setup.exe
796	netsh.exe
796	netsh.exe

Suspicious behavior: MapViewOfSection 2 IoCs

pid	Process
2216	Setup.exe
796	netsh.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 2216 wrote to memory of 796	2216	Setup.exe	28
PID 2216 wrote to memory of 796	2216	Setup.exe	28
PID 2216 wrote to memory of 796	2216	Setup.exe	28
PID 2216 wrote to memory of 796	2216	Setup.exe	28
PID 2216 wrote to memory of 796	2216	Setup.exe	28
PID 796 wrote to memory of 2900	796	netsh.exe	30
PID 796 wrote to memory of 2900	796	netsh.exe	30
PID 796 wrote to memory of 2900	796	netsh.exe	30
PID 796 wrote to memory of 2900	796	netsh.exe	30
PID 796 wrote to memory of 2900	796	netsh.exe	30
PID 796 wrote to memory of 2900	796	netsh.exe	30
PID 2900 wrote to memory of 2652	2900	coml.au3	31
PID 2900 wrote to memory of 2652	2900	coml.au3	31
PID 2900 wrote to memory of 2652	2900	coml.au3	31
PID 2900 wrote to memory of 2652	2900	coml.au3	31

C:\Users\Admin\AppData\Local\Temp\#!~#0Pen_9898_P@$SW0rd~!!$\Setup.exe
"C:\Users\Admin\AppData\Local\Temp\#!~#0Pen_9898_P@$SW0rd~!!$\Setup.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:2216
- 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:796
- - 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:2900
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2900 -s 148
      4⤵
      Loads dropped DLL
      Program crash
      PID:2652

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

acd5801f

Path C:\Users\Admin\AppData\Local\Temp\acd5801f
Size 6.8MB
SHA256 77eb68a0637f91823801819a38ba0524a27b643a6d1ceeae191487d6805d59f9
MD5 e1f8f4303a201a170240ab7967db4002
SHA1 04e88958f9ff79f59543e2901e4eae780e3725c5
SHA512 e94b371fffc3addda80b9a14f284f4554cacdc05685bac41761e2db2f15f2ffd5518e67277528b02b1895c8e89793dbcb8fa5a814be211066f081ec3379507a8
SSDEEP 196608:NnSom9yEBBa1LWL6hZN75KoQRVTA7oxsatrJjIIRXPZS:K9TBYWY8dALatdfXBS
MD5 SHA1 SHA512 SSDEEP

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coml.au3

Path \Users\Admin\AppData\Local\Temp\coml.au3
Size 872KB
SHA256 237d1bca6e056df5bb16a1216a434634109478f882d3b1d58344c801d184f95d
MD5 c56b5f0201a3b3de53e561fe76912bfd
SHA1 2a4062e10a5de813f5688221dbeb3f3ff33eb417
SHA512 195b98245bb820085ae9203cdb6d470b749d1f228908093e8606453b027b7d7681ccd7952e30c2f5dd40f8f0b999ccfc60ebb03419b574c08de6816e75710d2c
SSDEEP 12288:6pVWeOV7GtINsegA/hMyyzlcqikvAfcN9b2MyZa31twoPTdFxgawV2M01:6T3E53Myyzl0hMf1tr7Caw8M01
MD5 SHA1 SHA512 SSDEEP

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memory/796-19-0x0000000073AD0000-0x0000000073C44000-memory.dmp

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memory/796-17-0x00000000777E0000-0x0000000077989000-memory.dmp

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memory/796-24-0x0000000073AD0000-0x0000000073C44000-memory.dmp

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memory/796-22-0x0000000073ADE000-0x0000000073AE0000-memory.dmp

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memory/796-28-0x0000000073AD0000-0x0000000073C44000-memory.dmp

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memory/2216-14-0x000007FEF5F40000-0x000007FEF6098000-memory.dmp

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memory/2216-13-0x000007FEF5F40000-0x000007FEF6098000-memory.dmp

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memory/2216-0-0x000007FEF5F40000-0x000007FEF6098000-memory.dmp

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memory/2216-12-0x000007FEF5F58000-0x000007FEF5F59000-memory.dmp

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memory/2900-27-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

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memory/2900-26-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

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memory/2900-30-0x00000000005D0000-0x0000000000D1B000-memory.dmp

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memory/2900-37-0x00000000005D0000-0x0000000000D1B000-memory.dmp

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