stealc | f3544211710d293dfe623411feb7e121f5a8b2ea8b9e5e545d1f51b1aa9aabe3

Analysis

max time kernel
121s
max time network
129s
platform
windows7_x64
resource
win7-20240705-en
resource tags

arch:x64arch:x86image:win7-20240705-enlocale:en-usos:windows7-x64system
submitted
06/07/2024, 00:56

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General

Target
software.exe
Size 5.5MB
Sample240706-bajdma1bpm
SHA256 83b2f6c63dc3ec6cea64755ce2042ff747d52571daaef8a47934e00378f0afd3
MD5 1ed6f9d578e14edad0bf47edf1f6269f
SHA1 0e6546d7a7f237a4c094e24810fd4ab29ab6a970
SHA512 7481e391bc9fd0b0a30ca7464847e6ab0bbaa4febb8bfb33407742fd2e90f7fb0d88fd2ab0dc49fa499864e16a234d6f910926944c2a3ce337d614351dccfd60
SSDEEP 98304:zeL9fRCBL/JS6w1PMcf5blPwJp003KOIupEAjlgJHc6:zeL9ROL/Eh/PQbaObEACl
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

stealc vidar spyware stealer

Malware Config

Extracted

Family

vidar

https://t.me/bu77un
https://steamcommunity.com/profiles/76561199730044335

Attributes

user_agent
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:128.1) Gecko/20100101 Firefox/128.1

Signatures

Detect Vidar Stealer 2 IoCs

stealer

resource	yara_rule
behavioral5/memory/2984-80-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral5/memory/2984-560-0x0000000000400000-0x0000000000648000-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
Downloads MZ/PE file

Executes dropped EXE 1 IoCs

pid	Process
1688	GDGIJECGDG.exe

Loads dropped DLL 6 IoCs

pid	Process
2984	MSBuild.exe
2984	MSBuild.exe
2984	MSBuild.exe
1008	WerFault.exe
1008	WerFault.exe
1008	WerFault.exe

Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
spyware

Data from Local System
T1005

Credentials In Files
T1552.001

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3048 set thread context of 2984	3048	software.exe	30

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1008	1688	WerFault.exe	34

Checks processor information in registry 2 TTPs 2 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	MSBuild.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	MSBuild.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
1348	timeout.exe

Suspicious behavior: EnumeratesProcesses 22 IoCs

pid	Process
2984	MSBuild.exe
2984	MSBuild.exe
2984	MSBuild.exe
2984	MSBuild.exe
2984	MSBuild.exe
2984	MSBuild.exe
2984	MSBuild.exe
2984	MSBuild.exe
2984	MSBuild.exe
2984	MSBuild.exe
2984	MSBuild.exe
2984	MSBuild.exe
2984	MSBuild.exe
2984	MSBuild.exe
2984	MSBuild.exe
2984	MSBuild.exe
2984	MSBuild.exe
2984	MSBuild.exe
2984	MSBuild.exe
2984	MSBuild.exe
2984	MSBuild.exe
2984	MSBuild.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3048	software.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 3048 wrote to memory of 2984	3048	software.exe	30
PID 3048 wrote to memory of 2984	3048	software.exe	30
PID 3048 wrote to memory of 2984	3048	software.exe	30
PID 3048 wrote to memory of 2984	3048	software.exe	30
PID 3048 wrote to memory of 2984	3048	software.exe	30
PID 3048 wrote to memory of 2984	3048	software.exe	30
PID 3048 wrote to memory of 2984	3048	software.exe	30
PID 3048 wrote to memory of 2984	3048	software.exe	30
PID 3048 wrote to memory of 2984	3048	software.exe	30
PID 3048 wrote to memory of 2984	3048	software.exe	30
PID 2984 wrote to memory of 1688	2984	MSBuild.exe	34
PID 2984 wrote to memory of 1688	2984	MSBuild.exe	34
PID 2984 wrote to memory of 1688	2984	MSBuild.exe	34
PID 2984 wrote to memory of 1688	2984	MSBuild.exe	34
PID 1688 wrote to memory of 1008	1688	GDGIJECGDG.exe	35
PID 1688 wrote to memory of 1008	1688	GDGIJECGDG.exe	35
PID 1688 wrote to memory of 1008	1688	GDGIJECGDG.exe	35
PID 1688 wrote to memory of 1008	1688	GDGIJECGDG.exe	35
PID 2984 wrote to memory of 572	2984	MSBuild.exe	36
PID 2984 wrote to memory of 572	2984	MSBuild.exe	36
PID 2984 wrote to memory of 572	2984	MSBuild.exe	36
PID 2984 wrote to memory of 572	2984	MSBuild.exe	36
PID 572 wrote to memory of 1348	572	cmd.exe	38
PID 572 wrote to memory of 1348	572	cmd.exe	38
PID 572 wrote to memory of 1348	572	cmd.exe	38
PID 572 wrote to memory of 1348	572	cmd.exe	38

C:\Users\Admin\AppData\Local\Temp\software.exe
"C:\Users\Admin\AppData\Local\Temp\software.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3048
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"
  2⤵
  - Loads dropped DLL
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:2984
- - C:\ProgramData\GDGIJECGDG.exe
    "C:\ProgramData\GDGIJECGDG.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of WriteProcessMemory
    PID:1688
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1688 -s 96
      4⤵
      Loads dropped DLL
      Program crash
      PID:1008
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\system32\cmd.exe" /c timeout /t 10 & rd /s /q "C:\ProgramData\EGIDAAFIEHIE" & exit
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:572
  - - C:\Windows\SysWOW64\timeout.exe
      timeout /t 10
      4⤵
      Delays execution with timeout.exe
      PID:1348

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

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

Command and Control

Exfiltration

Impact

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Downloads

GDGIJECGDG.exe

Path C:\ProgramData\GDGIJECGDG.exe
Size 937KB
SHA256 2fd72d0d0fbc053a53adee5d9ec6cffde3fb5a3c6ba0c0490e24552b264d5449
MD5 168c5908924803d268d26965c32a5620
SHA1 9e0e2dc9c7e931c4ee860c32d83711c433f7b1a3
SHA512 749f0e4da8d6fde35b53e769b0b594c2e63835f970eedc54c8c15889863811b5fb296650ae9f5e255bafdd4b942ad3434a60c48e05f1283820c378d30645f1c1
SSDEEP 24576:YlrD4dQCg30l8cwMKAWgXkALsi3XoiHbL1/2E47kRh2gPilPfy:6RE6cwMKAHO6XoGR/Slhi
MD5 SHA1 SHA512 SSDEEP

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CabDDA4.tmp

Path C:\Users\Admin\AppData\Local\Temp\CabDDA4.tmp
Size 70KB
SHA256 b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f
MD5 49aebf8cbd62d92ac215b2923fb1b9f5
SHA1 1723be06719828dda65ad804298d0431f6aff976
SHA512 bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b
SSDEEP 1536:gc257bHnClJ3v5mnAQEBP+bfnW8Ctl8G1G4eu76NWDdB34w18R5cBWcJAm68+Q:gp2ld5jPqW8LgeulxB3fgcEfDQ
MD5 SHA1 SHA512 SSDEEP

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TarDE15.tmp

Path C:\Users\Admin\AppData\Local\Temp\TarDE15.tmp
Size 181KB
SHA256 8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8
MD5 4ea6026cf93ec6338144661bf1202cd1
SHA1 a1dec9044f750ad887935a01430bf49322fbdcb7
SHA512 6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b
SSDEEP 1536:aAZw/J+lCUsTRvsqgCyqWlUDNWdm1wpSru2A0XwjY/z02DTr3rmt6mZ:as2J+qTR0XCy/dmASru2AijbdG
MD5 SHA1 SHA512 SSDEEP

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memory/2984-66-0x0000000000400000-0x0000000000648000-memory.dmp

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memory/2984-560-0x0000000000400000-0x0000000000648000-memory.dmp

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memory/2984-80-0x0000000000400000-0x0000000000648000-memory.dmp

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memory/2984-68-0x0000000000400000-0x0000000000648000-memory.dmp

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memory/3048-54-0x0000000000F20000-0x0000000000F35000-memory.dmp

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memory/3048-62-0x0000000000F20000-0x0000000000F35000-memory.dmp

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memory/3048-32-0x0000000000F20000-0x0000000000F35000-memory.dmp

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memory/3048-30-0x0000000000F20000-0x0000000000F35000-memory.dmp

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memory/3048-28-0x0000000000F20000-0x0000000000F35000-memory.dmp

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memory/3048-24-0x0000000000F20000-0x0000000000F35000-memory.dmp

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memory/3048-40-0x0000000000F20000-0x0000000000F35000-memory.dmp

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memory/3048-38-0x0000000000F20000-0x0000000000F35000-memory.dmp

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memory/3048-22-0x0000000000F20000-0x0000000000F35000-memory.dmp

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memory/3048-20-0x0000000000F20000-0x0000000000F35000-memory.dmp

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memory/3048-50-0x0000000000F20000-0x0000000000F35000-memory.dmp

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memory/3048-48-0x0000000000F20000-0x0000000000F35000-memory.dmp

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memory/3048-52-0x0000000000F20000-0x0000000000F35000-memory.dmp

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memory/3048-46-0x0000000000F20000-0x0000000000F35000-memory.dmp

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memory/3048-44-0x0000000000F20000-0x0000000000F35000-memory.dmp

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memory/3048-0-0x0000000074DEE000-0x0000000074DEF000-memory.dmp

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memory/3048-42-0x0000000000F20000-0x0000000000F35000-memory.dmp

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memory/3048-18-0x0000000000F20000-0x0000000000F35000-memory.dmp

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memory/3048-64-0x0000000000F20000-0x0000000000F35000-memory.dmp

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memory/3048-34-0x0000000000F20000-0x0000000000F35000-memory.dmp

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memory/3048-60-0x0000000000F20000-0x0000000000F35000-memory.dmp

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memory/3048-58-0x0000000000F20000-0x0000000000F35000-memory.dmp

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memory/3048-56-0x0000000000F20000-0x0000000000F35000-memory.dmp

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memory/3048-16-0x0000000000F20000-0x0000000000F35000-memory.dmp

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memory/3048-14-0x0000000000F20000-0x0000000000F35000-memory.dmp

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memory/3048-12-0x0000000000F20000-0x0000000000F35000-memory.dmp

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memory/3048-8-0x0000000000F20000-0x0000000000F35000-memory.dmp

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memory/3048-6-0x0000000000F20000-0x0000000000F35000-memory.dmp

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memory/3048-5-0x0000000000F20000-0x0000000000F35000-memory.dmp

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memory/3048-65-0x0000000074DE0000-0x00000000754CE000-memory.dmp

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memory/3048-36-0x0000000000F20000-0x0000000000F35000-memory.dmp

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memory/3048-26-0x0000000000F20000-0x0000000000F35000-memory.dmp

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memory/3048-10-0x0000000000F20000-0x0000000000F35000-memory.dmp

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memory/3048-81-0x0000000074DE0000-0x00000000754CE000-memory.dmp

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memory/3048-4-0x0000000000F20000-0x0000000000F3C000-memory.dmp

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memory/3048-3-0x0000000004CB0000-0x0000000004D94000-memory.dmp

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memory/3048-2-0x0000000074DE0000-0x00000000754CE000-memory.dmp

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memory/3048-1-0x0000000000100000-0x000000000067A000-memory.dmp

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