Analysis
- max time kernel
149s - max time network
154s - platform
windows11-21h2_x64 - resource
win11-20260513-en - resource tags
arch:x64arch:x86image:win11-20260513-enlocale:en-usos:windows11-21h2-x64systemwindows - submitted
19/05/2026, 12:34
Behavioral task
behavioral1
Sample
2026-05-19_bd4c4a1f771fcab4079bce3e87aece3a_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe
Resource
win10v2004-20260513-en
windows10-2004-x64
12 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-05-19_bd4c4a1f771fcab4079bce3e87aece3a_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe
Resource
win11-20260513-en
windows11-21h2-x64
13 signatures
150 seconds
General
- Target 2026-05-19_bd4c4a1f771fcab4079bce3e87aece3a_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe
- Size 1.4MB
- Sample260519-pr49bab18v
- SHA256 fa70d3a097a496221ab0766256018cadde714a29e1467d5167312e37cd790299
- MD5 bd4c4a1f771fcab4079bce3e87aece3a
- SHA1 7c3e530038721ed8b85cdfec4de186e2b66671f6
- SHA512 9b7ab6182636e4d0c0d609210b00d0ebc5ae41eca67a74121b790af2299bcdbb31a96fb8b265e377ebfc429c441562bf39d808a76336a3d67ec4b48a64062db0
- SSDEEP 24576:OjHPOSOkx2LFscU6UQOJdBqsCPhH9Do2sOfNZMjHfUr:OTGkQy56/OJdJCXDrsOFZMjHfUr
- TLSH T1BC658E31AAC14132E2B3867186FA56F6A5257C222711E5CF62C97B291E737D3ED3070E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Custom signatureDetection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral2/files/0x002c00000002b285-3.dat CryptoLocker_rule2 - Custom signatureDetection of Cryptolocker Samples 1 IoCs
resource yara_rule behavioral2/files/0x002c00000002b285-3.dat CryptoLocker_set1 - Custom signatureUPX dump on OEP (original entry point) 10 IoCs
resource yara_rule behavioral2/memory/5016-0-0x0000000000D10000-0x0000000000D99000-memory.dmp UPX behavioral2/files/0x002c00000002b285-3.dat UPX behavioral2/memory/3956-4-0x0000000000DF0000-0x0000000000E79000-memory.dmp UPX behavioral2/memory/5016-10-0x0000000000D10000-0x0000000000D99000-memory.dmp UPX behavioral2/memory/3956-12-0x0000000000DF0000-0x0000000000E79000-memory.dmp UPX behavioral2/memory/3956-24-0x0000000000DF0000-0x0000000000E79000-memory.dmp UPX behavioral2/memory/3956-30-0x0000000000DF0000-0x0000000000E79000-memory.dmp UPX behavioral2/memory/5016-29-0x0000000000D10000-0x0000000000D99000-memory.dmp UPX behavioral2/memory/3956-32-0x0000000000DF0000-0x0000000000E79000-memory.dmp UPX behavioral2/memory/5016-43-0x0000000000D10000-0x0000000000D99000-memory.dmp UPX - Executes dropped EXE 1 IoCs
pid Process 3956 971cee44 - 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 5016 2026-05-19_bd4c4a1f771fcab4079bce3e87aece3a_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe Destination IP 2 223.5.5.5 5016 2026-05-19_bd4c4a1f771fcab4079bce3e87aece3a_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe Destination IP 10 114.114.114.114 5016 2026-05-19_bd4c4a1f771fcab4079bce3e87aece3a_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe Destination IP 11 223.5.5.5 5016 2026-05-19_bd4c4a1f771fcab4079bce3e87aece3a_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe - Drops file in System32 directory 15 IoCs
description ioc Process File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies 971cee44 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft 971cee44 File created C:\Windows\SysWOW64\971cee44 2026-05-19_bd4c4a1f771fcab4079bce3e87aece3a_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData 971cee44 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\81B9B36F9ABC4DA631A4713EE66FAEC6_D78A39BE9A7C3823659C09F61E8BD3E8 971cee44 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\66F835E41EC6A985EB9271E4A70169D7_CF44E3C99F7F4AC558EEB35244F7E046 971cee44 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\IE 971cee44 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\History\History.IE5 971cee44 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache 971cee44 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content 971cee44 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\57C8EDB95DF3F0AD4EE2DC2B8CFD4157 971cee44 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\57C8EDB95DF3F0AD4EE2DC2B8CFD4157 971cee44 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\66F835E41EC6A985EB9271E4A70169D7_CF44E3C99F7F4AC558EEB35244F7E046 971cee44 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\81B9B36F9ABC4DA631A4713EE66FAEC6_D78A39BE9A7C3823659C09F61E8BD3E8 971cee44 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\Content.IE5 971cee44 -
resource yara_rule behavioral2/memory/5016-0-0x0000000000D10000-0x0000000000D99000-memory.dmp upx behavioral2/files/0x002c00000002b285-3.dat upx behavioral2/memory/3956-4-0x0000000000DF0000-0x0000000000E79000-memory.dmp upx behavioral2/memory/5016-10-0x0000000000D10000-0x0000000000D99000-memory.dmp upx behavioral2/memory/3956-12-0x0000000000DF0000-0x0000000000E79000-memory.dmp upx behavioral2/memory/3956-24-0x0000000000DF0000-0x0000000000E79000-memory.dmp upx behavioral2/memory/3956-30-0x0000000000DF0000-0x0000000000E79000-memory.dmp upx behavioral2/memory/5016-29-0x0000000000D10000-0x0000000000D99000-memory.dmp upx behavioral2/memory/3956-32-0x0000000000DF0000-0x0000000000E79000-memory.dmp upx behavioral2/memory/5016-43-0x0000000000D10000-0x0000000000D99000-memory.dmp upx - Drops file in Windows directory 2 IoCs
description ioc Process File opened for modification C:\Windows\43ba68 971cee44 File opened for modification C:\Windows\55e030 2026-05-19_bd4c4a1f771fcab4079bce3e87aece3a_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 2026-05-19_bd4c4a1f771fcab4079bce3e87aece3a_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 971cee44 - Modifies data under HKEY_USERS 9 IoCs
description ioc Process Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1" 971cee44 Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0" 971cee44 Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix 971cee44 Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ 971cee44 Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1" 971cee44 Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1" 971cee44 Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\WinTrust\Trust Providers\Software Publishing 971cee44 Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:" 971cee44 Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:" 971cee44 - Modifies system certificate store 2 TTPs 2 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\1F24C630CDA418EF2069FFAD4FDD5F463A1B69AA 2026-05-19_bd4c4a1f771fcab4079bce3e87aece3a_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe Set value (data) \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\1F24C630CDA418EF2069FFAD4FDD5F463A1B69AA\Blob = 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 2026-05-19_bd4c4a1f771fcab4079bce3e87aece3a_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe - Suspicious behavior: EnumeratesProcesses 14 IoCs
pid Process 3956 971cee44 3956 971cee44 3956 971cee44 3956 971cee44 3956 971cee44 3956 971cee44 3956 971cee44 3956 971cee44 5016 2026-05-19_bd4c4a1f771fcab4079bce3e87aece3a_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe 5016 2026-05-19_bd4c4a1f771fcab4079bce3e87aece3a_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe 5016 2026-05-19_bd4c4a1f771fcab4079bce3e87aece3a_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe 5016 2026-05-19_bd4c4a1f771fcab4079bce3e87aece3a_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe 5016 2026-05-19_bd4c4a1f771fcab4079bce3e87aece3a_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe 5016 2026-05-19_bd4c4a1f771fcab4079bce3e87aece3a_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe - Suspicious use of AdjustPrivilegeToken 4 IoCs
description pid Process Token: SeDebugPrivilege 5016 2026-05-19_bd4c4a1f771fcab4079bce3e87aece3a_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe Token: SeTcbPrivilege 5016 2026-05-19_bd4c4a1f771fcab4079bce3e87aece3a_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe Token: SeDebugPrivilege 3956 971cee44 Token: SeTcbPrivilege 3956 971cee44
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-05-19_bd4c4a1f771fcab4079bce3e87aece3a_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe"C:\Users\Admin\AppData\Local\Temp\2026-05-19_bd4c4a1f771fcab4079bce3e87aece3a_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
- Modifies system certificate store
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:5016
-
C:\Windows\Syswow64\971cee44C:\Windows\Syswow64\971cee441⤵
- 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:3956
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Windows\SysWOW64\971cee44
- Size 1.4MB
- SHA256 f61aa102c4c6b1926270ff7ddbbe36b7677f5d9aecb7a73972d80bd2beb6533d
- MD5 cf207880edf682138e5056794cacdd83
- SHA1 412c3a36b84aa83501c83ae6ec4f294d7e938de4
- SHA512 3cc9798b1462eb3941d278705f1a36efe48bd083a0cd415a9913f35b462d37839d6a0e7cd32851c7e76ae13ea95d41797c4fd35cf6e91edfae7a45bf13b27e8c
- SSDEEP 24576:5jHPOSOkx2LFscU6UQOJdBqsCPhH9Do2sOfNZMjHfUr:5TGkQy56/OJdJCXDrsOFZMjHfUr
- TLSH T10D658E31AAC14132E2B3867186FA56F6A5257C222711E5CF62C97B291E737D3ED3070E
- MD5 SHA1 SHA512 SSDEEP TLSH