stealc | 25cbba8cb4b96c8b9e6c8490c2460eb8fecb3b6dd4eb8fc2a06392cb018dda5b

Analysis

max time kernel
147s
max time network
125s
platform
windows7_x64
resource
win7-20240611-en
resource tags

arch:x64arch:x86image:win7-20240611-enlocale:en-usos:windows7-x64system
submitted
15/06/2024, 12:20

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General

Target
##!!SetUp_5566_Pa$sW0rd$$!!/Setup.exe
Size 5.4MB
Sample240615-ph937stgrn
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/2632-31-0x0000000000BB0000-0x00000000012FC000-memory.dmp	family_vidar_v7
behavioral5/memory/2632-39-0x0000000000BB0000-0x00000000012FC000-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 9 IoCs

pid	Process
2816	netsh.exe
2632	coml.au3
3000	WerFault.exe
3000	WerFault.exe
3000	WerFault.exe
3000	WerFault.exe
3000	WerFault.exe
3000	WerFault.exe
3000	WerFault.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1932 set thread context of 2816	1932	Setup.exe	28

Program crash 1 IoCs

pid	pid_target	Process	procid_target
3000	2632	WerFault.exe	30

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1932	Setup.exe
1932	Setup.exe
2816	netsh.exe
2816	netsh.exe

Suspicious behavior: MapViewOfSection 2 IoCs

pid	Process
1932	Setup.exe
2816	netsh.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 1932 wrote to memory of 2816	1932	Setup.exe	28
PID 1932 wrote to memory of 2816	1932	Setup.exe	28
PID 1932 wrote to memory of 2816	1932	Setup.exe	28
PID 1932 wrote to memory of 2816	1932	Setup.exe	28
PID 1932 wrote to memory of 2816	1932	Setup.exe	28
PID 2816 wrote to memory of 2632	2816	netsh.exe	30
PID 2816 wrote to memory of 2632	2816	netsh.exe	30
PID 2816 wrote to memory of 2632	2816	netsh.exe	30
PID 2816 wrote to memory of 2632	2816	netsh.exe	30
PID 2816 wrote to memory of 2632	2816	netsh.exe	30
PID 2816 wrote to memory of 2632	2816	netsh.exe	30
PID 2632 wrote to memory of 3000	2632	coml.au3	33
PID 2632 wrote to memory of 3000	2632	coml.au3	33
PID 2632 wrote to memory of 3000	2632	coml.au3	33
PID 2632 wrote to memory of 3000	2632	coml.au3	33

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:1932
- 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:2816
- - 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:2632
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2632 -s 148
      4⤵
      Loads dropped DLL
      Program crash
      PID:3000

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

1c282035

Path C:\Users\Admin\AppData\Local\Temp\1c282035
Size 6.8MB
SHA256 0b41c68522d2dc2a0d7ac91efa233f985903357176d4dd07843b54754b3ace9a
MD5 8d600cbffc89e23322ab4c50dd7152a0
SHA1 03edf4546df4c004687bdf8914ae72c8e4865249
SHA512 b6cba4348a457ba27b1da9ed8e8d9645d4cd45d3c56ee975b823687fb187e2f2f1abc5720f4bea322cfff344c0283be1fa76bec9ea9b8526f423128355222b87
SSDEEP 98304:LK9czV5zFZ8Q87x8eQFys6ksexJ5C5rSN39wvwWTaFh0AeXBpNpmn6lAbXW7z2yK:LKvDJm85m1evQFh1+BMn6qw2yEDmC
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/1932-14-0x000007FEF5850000-0x000007FEF59A8000-memory.dmp

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memory/1932-0-0x000007FEF5850000-0x000007FEF59A8000-memory.dmp

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memory/1932-13-0x000007FEF5850000-0x000007FEF59A8000-memory.dmp

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memory/1932-12-0x000007FEF5868000-0x000007FEF5869000-memory.dmp

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memory/2632-27-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

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memory/2632-26-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

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memory/2632-31-0x0000000000BB0000-0x00000000012FC000-memory.dmp

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memory/2632-39-0x0000000000BB0000-0x00000000012FC000-memory.dmp

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memory/2816-17-0x0000000077050000-0x00000000771F9000-memory.dmp

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memory/2816-20-0x000000007335E000-0x0000000073360000-memory.dmp

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memory/2816-19-0x0000000073350000-0x00000000734C4000-memory.dmp

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memory/2816-24-0x0000000073350000-0x00000000734C4000-memory.dmp

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memory/2816-28-0x0000000073350000-0x00000000734C4000-memory.dmp

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