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
18/05/2026, 04:24
Behavioral task
behavioral1
Sample
2026-05-18_7a4427024d820d9f63461636b84d08c3_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe
Resource
win10v2004-20260513-en
windows10-2004-x64
12 signatures
150 seconds
General
- Target 2026-05-18_7a4427024d820d9f63461636b84d08c3_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe
- Size 768KB
- Sample260518-e1rpgafy8v
- SHA256 aa3db55934f207586b5bac94fece5b50746ec2190e31074f27cdecd59c2bccac
- MD5 7a4427024d820d9f63461636b84d08c3
- SHA1 ead62f93ed786beb5c1ce4f708a91145ea25d68d
- SHA512 e3c99eb14c434bea3240757a5ff62625d02d15e9dc3381d4a81a852f60800dfff7fa86fa6a3aa582a9d64f4a21c38824a4f99fc0d6e02d466480b3f6eb529af2
- SSDEEP 12288:wqXUHkUXe39sOkx2LIan5FAQjU/LikGU5rCOTeidT:wjHPOSOkx2LFscU6UQOJdT
- TLSH T19DF47D31E241C036D6A74572C6FA4BBBA5247D25431161CBA7C4BA262FB76D2FA3130F
- MD5 SHA1 SHA512 SSDEEP TLSH
Malware Config
Signatures
- Detection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral2/files/0x002a00000002b306-2.dat CryptoLocker_rule2 - Detection of Cryptolocker Samples 1 IoCs
resource yara_rule behavioral2/files/0x002a00000002b306-2.dat CryptoLocker_set1 - UPX dump on OEP (original entry point) 8 IoCs
resource yara_rule behavioral2/memory/1704-0-0x00000000001F0000-0x0000000000279000-memory.dmp UPX behavioral2/files/0x002a00000002b306-2.dat UPX behavioral2/memory/3216-3-0x00000000008D0000-0x0000000000959000-memory.dmp UPX behavioral2/memory/1704-12-0x00000000001F0000-0x0000000000279000-memory.dmp UPX behavioral2/memory/3216-14-0x00000000008D0000-0x0000000000959000-memory.dmp UPX behavioral2/memory/1704-23-0x00000000001F0000-0x0000000000279000-memory.dmp UPX behavioral2/memory/3216-24-0x00000000008D0000-0x0000000000959000-memory.dmp UPX behavioral2/memory/3216-29-0x00000000008D0000-0x0000000000959000-memory.dmp UPX - Executes dropped EXE 1 IoCs
pid Process 3216 f993a9d0 - 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 10 223.5.5.5 1704 2026-05-18_7a4427024d820d9f63461636b84d08c3_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe Destination IP 1 114.114.114.114 1704 2026-05-18_7a4427024d820d9f63461636b84d08c3_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe Destination IP 2 223.5.5.5 1704 2026-05-18_7a4427024d820d9f63461636b84d08c3_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe Destination IP 9 114.114.114.114 1704 2026-05-18_7a4427024d820d9f63461636b84d08c3_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe - Drops file in System32 directory 13 IoCs
description ioc Process File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache f993a9d0 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData f993a9d0 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content f993a9d0 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\3EC845F33427F1C99AF855BE8930371C f993a9d0 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\3EC845F33427F1C99AF855BE8930371C f993a9d0 File created C:\Windows\SysWOW64\f993a9d0 2026-05-18_7a4427024d820d9f63461636b84d08c3_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\Content.IE5 f993a9d0 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\IE f993a9d0 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft f993a9d0 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\57C8EDB95DF3F0AD4EE2DC2B8CFD4157 f993a9d0 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\57C8EDB95DF3F0AD4EE2DC2B8CFD4157 f993a9d0 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies f993a9d0 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\History\History.IE5 f993a9d0 -
resource yara_rule behavioral2/memory/1704-0-0x00000000001F0000-0x0000000000279000-memory.dmp upx behavioral2/files/0x002a00000002b306-2.dat upx behavioral2/memory/3216-3-0x00000000008D0000-0x0000000000959000-memory.dmp upx behavioral2/memory/1704-12-0x00000000001F0000-0x0000000000279000-memory.dmp upx behavioral2/memory/3216-14-0x00000000008D0000-0x0000000000959000-memory.dmp upx behavioral2/memory/1704-23-0x00000000001F0000-0x0000000000279000-memory.dmp upx behavioral2/memory/3216-24-0x00000000008D0000-0x0000000000959000-memory.dmp upx behavioral2/memory/3216-29-0x00000000008D0000-0x0000000000959000-memory.dmp upx - Drops file in Windows directory 2 IoCs
description ioc Process File opened for modification C:\Windows\370f20 f993a9d0 File opened for modification C:\Windows\1d2c50 2026-05-18_7a4427024d820d9f63461636b84d08c3_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 2026-05-18_7a4427024d820d9f63461636b84d08c3_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language f993a9d0 - 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 f993a9d0 Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:" f993a9d0 Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ f993a9d0 Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1" f993a9d0 Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1" f993a9d0 Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\WinTrust\Trust Providers\Software Publishing f993a9d0 Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:" f993a9d0 Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1" f993a9d0 Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0" f993a9d0 - Suspicious behavior: EnumeratesProcesses 14 IoCs
pid Process 3216 f993a9d0 3216 f993a9d0 3216 f993a9d0 3216 f993a9d0 3216 f993a9d0 3216 f993a9d0 3216 f993a9d0 3216 f993a9d0 1704 2026-05-18_7a4427024d820d9f63461636b84d08c3_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe 1704 2026-05-18_7a4427024d820d9f63461636b84d08c3_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe 1704 2026-05-18_7a4427024d820d9f63461636b84d08c3_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe 1704 2026-05-18_7a4427024d820d9f63461636b84d08c3_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe 1704 2026-05-18_7a4427024d820d9f63461636b84d08c3_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe 1704 2026-05-18_7a4427024d820d9f63461636b84d08c3_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe - Suspicious use of AdjustPrivilegeToken 4 IoCs
description pid Process Token: SeDebugPrivilege 1704 2026-05-18_7a4427024d820d9f63461636b84d08c3_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe Token: SeTcbPrivilege 1704 2026-05-18_7a4427024d820d9f63461636b84d08c3_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe Token: SeDebugPrivilege 3216 f993a9d0 Token: SeTcbPrivilege 3216 f993a9d0
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-05-18_7a4427024d820d9f63461636b84d08c3_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe"C:\Users\Admin\AppData\Local\Temp\2026-05-18_7a4427024d820d9f63461636b84d08c3_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:1704
-
C:\Windows\Syswow64\f993a9d0C:\Windows\Syswow64\f993a9d01⤵
- 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:3216
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Windows\SysWOW64\f993a9d0
- Size 768KB
- SHA256 f29a7f27373f527890fb30fe839c6333f6bccb2d18b37fe042db15438a357269
- MD5 3251e3cb85e27a50edb12f08052ffea8
- SHA1 9550b0c897713396439e57eeb3ea44593254faa2
- SHA512 41879823eda6dcb6229927854b779ed856474b4195a403c865f7e7021c2004cff270750719730c3ba722385ff884a65db60b1f12d300f8d20e1b3492f42e979e
- SSDEEP 12288:qqXUHkUXe39sOkx2LIan5FAQjU/LikGU5rCOTeidT:qjHPOSOkx2LFscU6UQOJdT
- TLSH T1DEF47D31E241C036D6A74572C6FA4BBBA5247D25431161CBA7C4BA262FB76D2FA3130F
- MD5 SHA1 SHA512 SSDEEP TLSH