Analysis
- max time kernel
149s - max time network
150s - platform
windows11-21h2_x64 - resource
win11-20260130-en - resource tags
arch:x64arch:x86image:win11-20260130-enlocale:en-usos:windows11-21h2-x64systemwindows - submitted
19/04/2026, 07:08
Behavioral task
behavioral1
Sample
2026-04-19_c923ad889a6e0c17d9b8a88a3a2d3594_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe
Resource
win10v2004-20260130-en
windows10-2004-x64
13 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-04-19_c923ad889a6e0c17d9b8a88a3a2d3594_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe
Resource
win11-20260130-en
windows11-21h2-x64
13 signatures
150 seconds
General
- Target 2026-04-19_c923ad889a6e0c17d9b8a88a3a2d3594_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe
- Size 1.4MB
- Sample260419-hycdjsd13n
- SHA256 9ee5e09e02f19c086e16f007eaa3336d514c957a5ca5ea64678b51a9e143549c
- MD5 c923ad889a6e0c17d9b8a88a3a2d3594
- SHA1 c766c89ed746d5fd5f150ba0b13a2e06514b40b0
- SHA512 864c59cfd87c4012ca81cb5f63a7d1cf788e51734b67954565b89a8f25ba200f147a555cd466c6e5c9cf3af4656fe0584a22917fe5dfcb7e0ec4b79d56d57ea8
- SSDEEP 24576:wjHPOSOkx2LFscU6UQOJdBqsCPhH9Do2sOfNZMjHfUr:wTGkQy56/OJdJCXDrsOFZMjHfUr
- TLSH T15C658E31AAC14132E2B3867186FA56F6A5257C222711E5CF62C97B291E737D3ED3070E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral2/files/0x001800000002710f-3.dat CryptoLocker_rule2 - Detection of Cryptolocker Samples 1 IoCs
resource yara_rule behavioral2/files/0x001800000002710f-3.dat CryptoLocker_set1 - UPX dump on OEP (original entry point) 10 IoCs
resource yara_rule behavioral2/memory/5776-0-0x0000000000300000-0x0000000000389000-memory.dmp UPX behavioral2/files/0x001800000002710f-3.dat UPX behavioral2/memory/3700-4-0x0000000000890000-0x0000000000919000-memory.dmp UPX behavioral2/memory/5776-12-0x0000000000300000-0x0000000000389000-memory.dmp UPX behavioral2/memory/3700-14-0x0000000000890000-0x0000000000919000-memory.dmp UPX behavioral2/memory/5776-31-0x0000000000300000-0x0000000000389000-memory.dmp UPX behavioral2/memory/3700-32-0x0000000000890000-0x0000000000919000-memory.dmp UPX behavioral2/memory/3700-34-0x0000000000890000-0x0000000000919000-memory.dmp UPX behavioral2/memory/5776-45-0x0000000000300000-0x0000000000389000-memory.dmp UPX behavioral2/memory/5776-49-0x0000000000300000-0x0000000000389000-memory.dmp UPX - Executes dropped EXE 1 IoCs
pid Process 3700 1b629bfe - Unexpected DNS network traffic destination 4 IoCs
Network traffic to other servers than the configured DNS servers was detected on the DNS port.
description flow ioc pid Process Destination IP 17 114.114.114.114 5776 2026-04-19_c923ad889a6e0c17d9b8a88a3a2d3594_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe Destination IP 18 223.5.5.5 5776 2026-04-19_c923ad889a6e0c17d9b8a88a3a2d3594_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe Destination IP 1 114.114.114.114 5776 2026-04-19_c923ad889a6e0c17d9b8a88a3a2d3594_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe Destination IP 2 223.5.5.5 5776 2026-04-19_c923ad889a6e0c17d9b8a88a3a2d3594_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe - Drops file in System32 directory 17 IoCs
description ioc Process File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\57C8EDB95DF3F0AD4EE2DC2B8CFD4157 1b629bfe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\81B9B36F9ABC4DA631A4713EE66FAEC6_D78A39BE9A7C3823659C09F61E8BD3E8 1b629bfe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\IE 1b629bfe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\History\History.IE5 1b629bfe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\AAD646CB44373074ADE741C38400E7E1 1b629bfe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\81B9B36F9ABC4DA631A4713EE66FAEC6_D78A39BE9A7C3823659C09F61E8BD3E8 1b629bfe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\Content.IE5 1b629bfe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content 1b629bfe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\57C8EDB95DF3F0AD4EE2DC2B8CFD4157 1b629bfe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\AAD646CB44373074ADE741C38400E7E1 1b629bfe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\66F835E41EC6A985EB9271E4A70169D7_CF44E3C99F7F4AC558EEB35244F7E046 1b629bfe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\66F835E41EC6A985EB9271E4A70169D7_CF44E3C99F7F4AC558EEB35244F7E046 1b629bfe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies 1b629bfe File created C:\Windows\SysWOW64\1b629bfe 2026-04-19_c923ad889a6e0c17d9b8a88a3a2d3594_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft 1b629bfe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache 1b629bfe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData 1b629bfe -
resource yara_rule behavioral2/memory/5776-0-0x0000000000300000-0x0000000000389000-memory.dmp upx behavioral2/files/0x001800000002710f-3.dat upx behavioral2/memory/3700-4-0x0000000000890000-0x0000000000919000-memory.dmp upx behavioral2/memory/5776-12-0x0000000000300000-0x0000000000389000-memory.dmp upx behavioral2/memory/3700-14-0x0000000000890000-0x0000000000919000-memory.dmp upx behavioral2/memory/5776-31-0x0000000000300000-0x0000000000389000-memory.dmp upx behavioral2/memory/3700-32-0x0000000000890000-0x0000000000919000-memory.dmp upx behavioral2/memory/3700-34-0x0000000000890000-0x0000000000919000-memory.dmp upx behavioral2/memory/5776-45-0x0000000000300000-0x0000000000389000-memory.dmp upx behavioral2/memory/5776-49-0x0000000000300000-0x0000000000389000-memory.dmp upx - Drops file in Windows directory 2 IoCs
description ioc Process File opened for modification C:\Windows\62e320 2026-04-19_c923ad889a6e0c17d9b8a88a3a2d3594_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe File opened for modification C:\Windows\3f5868 1b629bfe - System Location Discovery: System Language Discovery 1 TTPs 2 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 2026-04-19_c923ad889a6e0c17d9b8a88a3a2d3594_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 1b629bfe - Modifies data under HKEY_USERS 9 IoCs
description ioc Process Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ 1b629bfe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1" 1b629bfe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0" 1b629bfe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\WinTrust\Trust Providers\Software Publishing 1b629bfe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1" 1b629bfe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1" 1b629bfe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix 1b629bfe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:" 1b629bfe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:" 1b629bfe - Modifies system certificate store 2 TTPs 2 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\1F24C630CDA418EF2069FFAD4FDD5F463A1B69AA 1b629bfe Set value (data) \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\1F24C630CDA418EF2069FFAD4FDD5F463A1B69AA\Blob = 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 1b629bfe - Suspicious behavior: EnumeratesProcesses 14 IoCs
pid Process 3700 1b629bfe 3700 1b629bfe 3700 1b629bfe 3700 1b629bfe 3700 1b629bfe 3700 1b629bfe 3700 1b629bfe 3700 1b629bfe 5776 2026-04-19_c923ad889a6e0c17d9b8a88a3a2d3594_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe 5776 2026-04-19_c923ad889a6e0c17d9b8a88a3a2d3594_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe 5776 2026-04-19_c923ad889a6e0c17d9b8a88a3a2d3594_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe 5776 2026-04-19_c923ad889a6e0c17d9b8a88a3a2d3594_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe 5776 2026-04-19_c923ad889a6e0c17d9b8a88a3a2d3594_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe 5776 2026-04-19_c923ad889a6e0c17d9b8a88a3a2d3594_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe - Suspicious use of AdjustPrivilegeToken 4 IoCs
description pid Process Token: SeDebugPrivilege 5776 2026-04-19_c923ad889a6e0c17d9b8a88a3a2d3594_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe Token: SeTcbPrivilege 5776 2026-04-19_c923ad889a6e0c17d9b8a88a3a2d3594_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe Token: SeDebugPrivilege 3700 1b629bfe Token: SeTcbPrivilege 3700 1b629bfe
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-04-19_c923ad889a6e0c17d9b8a88a3a2d3594_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe"C:\Users\Admin\AppData\Local\Temp\2026-04-19_c923ad889a6e0c17d9b8a88a3a2d3594_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe"1⤵
- Unexpected DNS network traffic destination
- Drops file in System32 directory
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:5776
-
C:\Windows\Syswow64\1b629bfeC:\Windows\Syswow64\1b629bfe1⤵
- Executes dropped EXE
- Drops file in System32 directory
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Modifies data under HKEY_USERS
- Modifies system certificate store
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3700
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Windows\SysWOW64\1b629bfe
- Size 1.4MB
- SHA256 d22907d66b91c5aabf4f15af17c0e6cc4c978d98d0f9f3a7035076c775219ac5
- MD5 d29a811221eeeeb0f8dc8b621c29718b
- SHA1 fce47389f799725dfbfcf2b79e0707f137fa93ef
- SHA512 b882431cfed34192ab444109d8069cd0d58d7858cae26e13e40b1c8d478c9282ecdbba2bc51aac819fa54ccafa913530174775a8925e240e6a5370cb9f15018c
- SSDEEP 24576:NjHPOSOkx2LFscU6UQOJdBqsCPhH9Do2sOfNZMjHfUr:NTGkQy56/OJdJCXDrsOFZMjHfUr
- TLSH T164658E31AAC14132E2B3867186FA56F6A5257C222711E5CF62C97B291E737D3ED3070E
- MD5 SHA1 SHA512 SSDEEP TLSH