Analysis
- max time kernel
149s - max time network
152s - platform
windows11-21h2_x64 - resource
win11-20260513-en - resource tags
arch:x64arch:x86image:win11-20260513-enlocale:en-usos:windows11-21h2-x64systemwindows - submitted
16/05/2026, 12:26
Behavioral task
behavioral1
Sample
2026-05-16_1d6a08a1a0bc2e3898baf36c7876461f_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe
Resource
win10v2004-20260513-en
windows10-2004-x64
13 signatures
150 seconds
General
- Target 2026-05-16_1d6a08a1a0bc2e3898baf36c7876461f_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe
- Size 768KB
- Sample260516-pmkdcadv9w
- SHA256 b35a51a05d9cb71a7d754df65958cbe6d0094ab7de5896385f2d75cadc8c6eb7
- MD5 1d6a08a1a0bc2e3898baf36c7876461f
- SHA1 c82ee0eeb2a4df99879977a5c443876d44e453eb
- SHA512 fe2548e740f864c1900c88a91a2bcc8971f165465784b25c54d7b1edb4b04fa66439b8644535fbdfcc9e325eb5aedad45828b9f94fefb0f80cf330242492d08d
- SSDEEP 12288:yqXUHkUXe39sOkx2LIan5FAQjU/LikGU5rCOTeidT:yjHPOSOkx2LFscU6UQOJdT
- TLSH T1B9F47D31E241C036D6A74572C6FA4BBBA5247D25431161CBA7C4BA262FB76D2FA3130F
- MD5 SHA1 SHA512 SSDEEP TLSH
Malware Config
Signatures
- Custom signatureDetection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral2/files/0x0009000000025ad7-2.dat CryptoLocker_rule2 - Custom signatureDetection of Cryptolocker Samples 1 IoCs
resource yara_rule behavioral2/files/0x0009000000025ad7-2.dat CryptoLocker_set1 - Custom signatureUPX dump on OEP (original entry point) 10 IoCs
resource yara_rule behavioral2/memory/6124-0-0x0000000000DA0000-0x0000000000E29000-memory.dmp UPX behavioral2/files/0x0009000000025ad7-2.dat UPX behavioral2/memory/4484-3-0x00000000003D0000-0x0000000000459000-memory.dmp UPX behavioral2/memory/6124-15-0x0000000000DA0000-0x0000000000E29000-memory.dmp UPX behavioral2/memory/4484-17-0x00000000003D0000-0x0000000000459000-memory.dmp UPX behavioral2/memory/4484-22-0x00000000003D0000-0x0000000000459000-memory.dmp UPX behavioral2/memory/6124-31-0x0000000000DA0000-0x0000000000E29000-memory.dmp UPX behavioral2/memory/4484-32-0x00000000003D0000-0x0000000000459000-memory.dmp UPX behavioral2/memory/4484-34-0x00000000003D0000-0x0000000000459000-memory.dmp UPX behavioral2/memory/6124-53-0x0000000000DA0000-0x0000000000E29000-memory.dmp UPX - Executes dropped EXE 1 IoCs
pid Process 4484 d88effaa - 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 1 114.114.114.114 6124 2026-05-16_1d6a08a1a0bc2e3898baf36c7876461f_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe Destination IP 2 223.5.5.5 6124 2026-05-16_1d6a08a1a0bc2e3898baf36c7876461f_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe Destination IP 12 114.114.114.114 6124 2026-05-16_1d6a08a1a0bc2e3898baf36c7876461f_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe Destination IP 13 223.5.5.5 6124 2026-05-16_1d6a08a1a0bc2e3898baf36c7876461f_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\Local\Microsoft\Windows\INetCache\Content.IE5 d88effaa File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache d88effaa File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\66F835E41EC6A985EB9271E4A70169D7_CF44E3C99F7F4AC558EEB35244F7E046 d88effaa File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\3EC845F33427F1C99AF855BE8930371C d88effaa File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies d88effaa File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\History\History.IE5 d88effaa File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData d88effaa File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\57C8EDB95DF3F0AD4EE2DC2B8CFD4157 d88effaa File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content d88effaa File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\81B9B36F9ABC4DA631A4713EE66FAEC6_D78A39BE9A7C3823659C09F61E8BD3E8 d88effaa File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\IE d88effaa File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\66F835E41EC6A985EB9271E4A70169D7_CF44E3C99F7F4AC558EEB35244F7E046 d88effaa File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\3EC845F33427F1C99AF855BE8930371C d88effaa File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\81B9B36F9ABC4DA631A4713EE66FAEC6_D78A39BE9A7C3823659C09F61E8BD3E8 d88effaa File created C:\Windows\SysWOW64\d88effaa 2026-05-16_1d6a08a1a0bc2e3898baf36c7876461f_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft d88effaa File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\57C8EDB95DF3F0AD4EE2DC2B8CFD4157 d88effaa -
resource yara_rule behavioral2/memory/6124-0-0x0000000000DA0000-0x0000000000E29000-memory.dmp upx behavioral2/files/0x0009000000025ad7-2.dat upx behavioral2/memory/4484-3-0x00000000003D0000-0x0000000000459000-memory.dmp upx behavioral2/memory/6124-15-0x0000000000DA0000-0x0000000000E29000-memory.dmp upx behavioral2/memory/4484-17-0x00000000003D0000-0x0000000000459000-memory.dmp upx behavioral2/memory/4484-22-0x00000000003D0000-0x0000000000459000-memory.dmp upx behavioral2/memory/6124-31-0x0000000000DA0000-0x0000000000E29000-memory.dmp upx behavioral2/memory/4484-32-0x00000000003D0000-0x0000000000459000-memory.dmp upx behavioral2/memory/4484-34-0x00000000003D0000-0x0000000000459000-memory.dmp upx behavioral2/memory/6124-53-0x0000000000DA0000-0x0000000000E29000-memory.dmp upx - Drops file in Windows directory 2 IoCs
description ioc Process File opened for modification C:\Windows\4cc488 d88effaa File opened for modification C:\Windows\68d858 2026-05-16_1d6a08a1a0bc2e3898baf36c7876461f_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe - 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 2026-05-16_1d6a08a1a0bc2e3898baf36c7876461f_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language d88effaa - Modifies data under HKEY_USERS 9 IoCs
description ioc Process Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix d88effaa Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:" d88effaa Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:" d88effaa Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1" d88effaa Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1" d88effaa Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0" d88effaa Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\WinTrust\Trust Providers\Software Publishing d88effaa Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ d88effaa Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1" d88effaa - Suspicious behavior: EnumeratesProcesses 14 IoCs
pid Process 4484 d88effaa 4484 d88effaa 4484 d88effaa 4484 d88effaa 4484 d88effaa 4484 d88effaa 4484 d88effaa 4484 d88effaa 6124 2026-05-16_1d6a08a1a0bc2e3898baf36c7876461f_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe 6124 2026-05-16_1d6a08a1a0bc2e3898baf36c7876461f_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe 6124 2026-05-16_1d6a08a1a0bc2e3898baf36c7876461f_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe 6124 2026-05-16_1d6a08a1a0bc2e3898baf36c7876461f_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe 6124 2026-05-16_1d6a08a1a0bc2e3898baf36c7876461f_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe 6124 2026-05-16_1d6a08a1a0bc2e3898baf36c7876461f_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe - Suspicious use of AdjustPrivilegeToken 4 IoCs
description pid Process Token: SeDebugPrivilege 6124 2026-05-16_1d6a08a1a0bc2e3898baf36c7876461f_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe Token: SeTcbPrivilege 6124 2026-05-16_1d6a08a1a0bc2e3898baf36c7876461f_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe Token: SeDebugPrivilege 4484 d88effaa Token: SeTcbPrivilege 4484 d88effaa
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-05-16_1d6a08a1a0bc2e3898baf36c7876461f_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe"C:\Users\Admin\AppData\Local\Temp\2026-05-16_1d6a08a1a0bc2e3898baf36c7876461f_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:6124
-
C:\Windows\Syswow64\d88effaaC:\Windows\Syswow64\d88effaa1⤵
- Executes dropped EXE
- Drops file in System32 directory
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4484
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Windows\SysWOW64\d88effaa
- Size 768KB
- SHA256 10cdadd66701dc1e1d0218724731e3b7f0e3a27d88796eb439345dba0da721c7
- MD5 21892c4d193700b9b5fc62de47e34a97
- SHA1 785deac79d962e13cc921ce7098f6c7aa373d7e3
- SHA512 69d5f2e6965abddb1fa17d9ac467ef541067f1ad15d771b50d4b26f6f5e339a92baf14f9af37a3eb1fd2001986885c2308441895057900acc363904d95d8e9a2
- SSDEEP 12288:fqXUHkUXe39sOkx2LIan5FAQjU/LikGU5rCOTeidT:fjHPOSOkx2LFscU6UQOJdT
- TLSH T1E8F47D31E241C036D6A74572C6FA4BBBA5247D25431161CBA7C4BA262FB76D2FA3130F
- MD5 SHA1 SHA512 SSDEEP TLSH