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
17/05/2026, 03:34
Behavioral task
behavioral1
Sample
2026-05-17_f7fb9e329160b552c91fc04ab7d7531a_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe
Resource
win10v2004-20260513-en
windows10-2004-x64
12 signatures
150 seconds
General
- Target 2026-05-17_f7fb9e329160b552c91fc04ab7d7531a_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe
- Size 1.4MB
- Sample260517-d47dnab13s
- SHA256 195ee18e4421b1f6418fb358cf979e31e615fde2e400d7754135255cc69bfa98
- MD5 f7fb9e329160b552c91fc04ab7d7531a
- SHA1 53454ace50d975dcc3a1a15419c5d6404ac75bf9
- SHA512 1ee072aa641a28fb0dcd28db0c4cd8aa5dfe5ed83441addab51737d331cfd345b16111525296ab77bba96ce70cd36b434e0aa23aa5e09097971800f14f71aee5
- SSDEEP 24576:0jHPOSOkx2LFscU6UQOJdBqsCPhH9Do2sOfNZMjHfUr:0TGkQy56/OJdJCXDrsOFZMjHfUr
- TLSH T15D658E31AAC14132E2B3867186FA56F6A5257C222711E5CF62C97B291E737D3ED3070E
- MD5 SHA1 SHA512 SSDEEP TLSH
Malware Config
Signatures
- Detection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral2/files/0x002800000002b20c-2.dat CryptoLocker_rule2 - Detection of Cryptolocker Samples 1 IoCs
resource yara_rule behavioral2/files/0x002800000002b20c-2.dat CryptoLocker_set1 - UPX dump on OEP (original entry point) 9 IoCs
resource yara_rule behavioral2/memory/4500-0-0x0000000000FD0000-0x0000000001059000-memory.dmp UPX behavioral2/files/0x002800000002b20c-2.dat UPX behavioral2/memory/968-4-0x0000000000070000-0x00000000000F9000-memory.dmp UPX behavioral2/memory/4500-10-0x0000000000FD0000-0x0000000001059000-memory.dmp UPX behavioral2/memory/968-12-0x0000000000070000-0x00000000000F9000-memory.dmp UPX behavioral2/memory/4500-21-0x0000000000FD0000-0x0000000001059000-memory.dmp UPX behavioral2/memory/968-22-0x0000000000070000-0x00000000000F9000-memory.dmp UPX behavioral2/memory/4500-35-0x0000000000FD0000-0x0000000001059000-memory.dmp UPX behavioral2/memory/4500-38-0x0000000000FD0000-0x0000000001059000-memory.dmp UPX - Executes dropped EXE 1 IoCs
pid Process 968 4210485b - 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 7 114.114.114.114 4500 2026-05-17_f7fb9e329160b552c91fc04ab7d7531a_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe Destination IP 8 223.5.5.5 4500 2026-05-17_f7fb9e329160b552c91fc04ab7d7531a_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe Destination IP 1 114.114.114.114 4500 2026-05-17_f7fb9e329160b552c91fc04ab7d7531a_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe Destination IP 2 223.5.5.5 4500 2026-05-17_f7fb9e329160b552c91fc04ab7d7531a_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe - Drops file in System32 directory 13 IoCs
description ioc Process File created C:\Windows\SysWOW64\4210485b 2026-05-17_f7fb9e329160b552c91fc04ab7d7531a_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\Content.IE5 4210485b File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft 4210485b File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache 4210485b File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData 4210485b File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\66F835E41EC6A985EB9271E4A70169D7_CF44E3C99F7F4AC558EEB35244F7E046 4210485b File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\81B9B36F9ABC4DA631A4713EE66FAEC6_D78A39BE9A7C3823659C09F61E8BD3E8 4210485b File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\81B9B36F9ABC4DA631A4713EE66FAEC6_D78A39BE9A7C3823659C09F61E8BD3E8 4210485b File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\IE 4210485b File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies 4210485b File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\History\History.IE5 4210485b File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\66F835E41EC6A985EB9271E4A70169D7_CF44E3C99F7F4AC558EEB35244F7E046 4210485b File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content 4210485b -
resource yara_rule behavioral2/memory/4500-0-0x0000000000FD0000-0x0000000001059000-memory.dmp upx behavioral2/files/0x002800000002b20c-2.dat upx behavioral2/memory/968-4-0x0000000000070000-0x00000000000F9000-memory.dmp upx behavioral2/memory/4500-10-0x0000000000FD0000-0x0000000001059000-memory.dmp upx behavioral2/memory/968-12-0x0000000000070000-0x00000000000F9000-memory.dmp upx behavioral2/memory/4500-21-0x0000000000FD0000-0x0000000001059000-memory.dmp upx behavioral2/memory/968-22-0x0000000000070000-0x00000000000F9000-memory.dmp upx behavioral2/memory/4500-35-0x0000000000FD0000-0x0000000001059000-memory.dmp upx behavioral2/memory/4500-38-0x0000000000FD0000-0x0000000001059000-memory.dmp upx - Drops file in Windows directory 2 IoCs
description ioc Process File opened for modification C:\Windows\109290 4210485b File opened for modification C:\Windows\4d0aa8 2026-05-17_f7fb9e329160b552c91fc04ab7d7531a_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 2026-05-17_f7fb9e329160b552c91fc04ab7d7531a_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 4210485b - 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 4210485b Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ 4210485b Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1" 4210485b Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1" 4210485b Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\WinTrust\Trust Providers\Software Publishing 4210485b Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:" 4210485b Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:" 4210485b Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1" 4210485b Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0" 4210485b - Suspicious behavior: EnumeratesProcesses 14 IoCs
pid Process 968 4210485b 968 4210485b 968 4210485b 968 4210485b 968 4210485b 968 4210485b 968 4210485b 968 4210485b 4500 2026-05-17_f7fb9e329160b552c91fc04ab7d7531a_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe 4500 2026-05-17_f7fb9e329160b552c91fc04ab7d7531a_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe 4500 2026-05-17_f7fb9e329160b552c91fc04ab7d7531a_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe 4500 2026-05-17_f7fb9e329160b552c91fc04ab7d7531a_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe 4500 2026-05-17_f7fb9e329160b552c91fc04ab7d7531a_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe 4500 2026-05-17_f7fb9e329160b552c91fc04ab7d7531a_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe - Suspicious use of AdjustPrivilegeToken 4 IoCs
description pid Process Token: SeDebugPrivilege 4500 2026-05-17_f7fb9e329160b552c91fc04ab7d7531a_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe Token: SeTcbPrivilege 4500 2026-05-17_f7fb9e329160b552c91fc04ab7d7531a_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe Token: SeDebugPrivilege 968 4210485b Token: SeTcbPrivilege 968 4210485b
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-05-17_f7fb9e329160b552c91fc04ab7d7531a_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe"C:\Users\Admin\AppData\Local\Temp\2026-05-17_f7fb9e329160b552c91fc04ab7d7531a_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:4500
-
C:\Windows\Syswow64\4210485bC:\Windows\Syswow64\4210485b1⤵
- 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:968
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Windows\SysWOW64\4210485b
- Size 1.4MB
- SHA256 931bee1787874d319c03e3b7ba27b665762213871be244ef3581e4088f80f731
- MD5 f539832ef90a11c7e42c9e53af8b5640
- SHA1 795a198e919ae562b2701a6e799080eb91ed5f7c
- SHA512 c05b04596d9b09769761bdf7f8e51f2f826cbb9901df2762ebcebe80df5017e4993b5f4957f7a1604b6c25e833b4dc14365df68ca29825b17f99b99efb9cab3a
- SSDEEP 24576:ajHPOSOkx2LFscU6UQOJdBqsCPhH9Do2sOfNZMjHfUr:aTGkQy56/OJdJCXDrsOFZMjHfUr
- TLSH T19D658E31AAC14132E2B3867186FA56F6A5257C222711E5CF62C97B291E737D3ED3070E
- MD5 SHA1 SHA512 SSDEEP TLSH