Analysis
- max time kernel
149s - max time network
151s - platform
windows10-2004_x64 - resource
win10v2004-20260130-en - resource tags
arch:x64arch:x86image:win10v2004-20260130-enlocale:en-usos:windows10-2004-x64systemwindows - submitted
17/04/2026, 04:34
Behavioral task
behavioral1
Sample
2026-04-17_3d3caa039e43d946d2e7d46c65dd103f_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe
Resource
win10v2004-20260130-en
windows10-2004-x64
12 signatures
150 seconds
General
- Target 2026-04-17_3d3caa039e43d946d2e7d46c65dd103f_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe
- Size 1.4MB
- Sample260417-e7gsvaaw4s
- SHA256 213cb4e1065944d06f2495ff8d96f157b88e68ca35596b5ccf1dc82012935620
- MD5 3d3caa039e43d946d2e7d46c65dd103f
- SHA1 aa97ac7f000e4c07c5ea7c7b82100e093cd9a92f
- SHA512 e9598926c42e8d9a7816cbe16d65a7fc7d032ef64315ef72062fe907efd1c16ff4dd3714ab3d7908ed13d94540d89155fc703a5bb12d09cfeb572ad347284d1c
- SSDEEP 24576:DjHPOSOkx2LFscU6UQOJdBqsCPhH9Do2sOfNZMjHfUr:DTGkQy56/OJdJCXDrsOFZMjHfUr
- TLSH T114658E31AAC14132E2B3867186FA56F6A5257C222711E5CF62C97B291E737D3ED3070E
- MD5 SHA1 SHA512 SSDEEP TLSH
Malware Config
Signatures
- Custom signatureDetection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral1/files/0x000b000000023759-2.dat CryptoLocker_rule2 - Custom signatureDetection of Cryptolocker Samples 1 IoCs
resource yara_rule behavioral1/files/0x000b000000023759-2.dat CryptoLocker_set1 - Custom signatureUPX dump on OEP (original entry point) 10 IoCs
resource yara_rule behavioral1/memory/3280-0-0x00000000008C0000-0x0000000000949000-memory.dmp UPX behavioral1/files/0x000b000000023759-2.dat UPX behavioral1/memory/4872-4-0x0000000000300000-0x0000000000389000-memory.dmp UPX behavioral1/memory/3280-20-0x00000000008C0000-0x0000000000949000-memory.dmp UPX behavioral1/memory/4872-22-0x0000000000300000-0x0000000000389000-memory.dmp UPX behavioral1/memory/3280-40-0x00000000008C0000-0x0000000000949000-memory.dmp UPX behavioral1/memory/4872-42-0x0000000000300000-0x0000000000389000-memory.dmp UPX behavioral1/memory/3280-50-0x00000000008C0000-0x0000000000949000-memory.dmp UPX behavioral1/memory/3280-58-0x00000000008C0000-0x0000000000949000-memory.dmp UPX behavioral1/memory/3280-72-0x00000000008C0000-0x0000000000949000-memory.dmp UPX - Executes dropped EXE 1 IoCs
pid Process 4872 d087c4a2 - Unexpected DNS network traffic destination 10 IoCs
Network traffic to other servers than the configured DNS servers was detected on the DNS port.
description flow ioc pid Process Destination IP 86 114.114.114.114 3280 2026-04-17_3d3caa039e43d946d2e7d46c65dd103f_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe Destination IP 87 223.5.5.5 3280 2026-04-17_3d3caa039e43d946d2e7d46c65dd103f_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe Destination IP 117 223.5.5.5 3280 2026-04-17_3d3caa039e43d946d2e7d46c65dd103f_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe Destination IP 184 114.114.114.114 3280 2026-04-17_3d3caa039e43d946d2e7d46c65dd103f_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe Destination IP 185 223.5.5.5 3280 2026-04-17_3d3caa039e43d946d2e7d46c65dd103f_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe Destination IP 45 114.114.114.114 3280 2026-04-17_3d3caa039e43d946d2e7d46c65dd103f_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe Destination IP 49 223.5.5.5 3280 2026-04-17_3d3caa039e43d946d2e7d46c65dd103f_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe Destination IP 116 114.114.114.114 3280 2026-04-17_3d3caa039e43d946d2e7d46c65dd103f_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe Destination IP 3 114.114.114.114 3280 2026-04-17_3d3caa039e43d946d2e7d46c65dd103f_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe Destination IP 6 223.5.5.5 3280 2026-04-17_3d3caa039e43d946d2e7d46c65dd103f_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\INetCache\Content.IE5 d087c4a2 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\IE d087c4a2 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies d087c4a2 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\History\History.IE5 d087c4a2 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft d087c4a2 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache d087c4a2 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\57C8EDB95DF3F0AD4EE2DC2B8CFD4157 d087c4a2 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\81B9B36F9ABC4DA631A4713EE66FAEC6_D78A39BE9A7C3823659C09F61E8BD3E8 d087c4a2 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData d087c4a2 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\57C8EDB95DF3F0AD4EE2DC2B8CFD4157 d087c4a2 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\81B9B36F9ABC4DA631A4713EE66FAEC6_D78A39BE9A7C3823659C09F61E8BD3E8 d087c4a2 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content d087c4a2 File created C:\Windows\SysWOW64\d087c4a2 2026-04-17_3d3caa039e43d946d2e7d46c65dd103f_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\66F835E41EC6A985EB9271E4A70169D7_CF44E3C99F7F4AC558EEB35244F7E046 d087c4a2 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\66F835E41EC6A985EB9271E4A70169D7_CF44E3C99F7F4AC558EEB35244F7E046 d087c4a2 -
resource yara_rule behavioral1/memory/3280-0-0x00000000008C0000-0x0000000000949000-memory.dmp upx behavioral1/files/0x000b000000023759-2.dat upx behavioral1/memory/4872-4-0x0000000000300000-0x0000000000389000-memory.dmp upx behavioral1/memory/3280-20-0x00000000008C0000-0x0000000000949000-memory.dmp upx behavioral1/memory/4872-22-0x0000000000300000-0x0000000000389000-memory.dmp upx behavioral1/memory/3280-40-0x00000000008C0000-0x0000000000949000-memory.dmp upx behavioral1/memory/4872-42-0x0000000000300000-0x0000000000389000-memory.dmp upx behavioral1/memory/3280-50-0x00000000008C0000-0x0000000000949000-memory.dmp upx behavioral1/memory/3280-58-0x00000000008C0000-0x0000000000949000-memory.dmp upx behavioral1/memory/3280-72-0x00000000008C0000-0x0000000000949000-memory.dmp upx - Drops file in Windows directory 2 IoCs
description ioc Process File opened for modification C:\Windows\536910 d087c4a2 File opened for modification C:\Windows\3827a0 2026-04-17_3d3caa039e43d946d2e7d46c65dd103f_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 2026-04-17_3d3caa039e43d946d2e7d46c65dd103f_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language d087c4a2 - 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\Cookies\CachePrefix = "Cookie:" d087c4a2 Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1" d087c4a2 Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1" d087c4a2 Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0" d087c4a2 Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\WinTrust\Trust Providers\Software Publishing d087c4a2 Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix d087c4a2 Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:" d087c4a2 Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ d087c4a2 Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1" d087c4a2 - Suspicious behavior: EnumeratesProcesses 18 IoCs
pid Process 4872 d087c4a2 4872 d087c4a2 4872 d087c4a2 4872 d087c4a2 4872 d087c4a2 4872 d087c4a2 4872 d087c4a2 4872 d087c4a2 4872 d087c4a2 4872 d087c4a2 4872 d087c4a2 4872 d087c4a2 3280 2026-04-17_3d3caa039e43d946d2e7d46c65dd103f_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe 3280 2026-04-17_3d3caa039e43d946d2e7d46c65dd103f_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe 3280 2026-04-17_3d3caa039e43d946d2e7d46c65dd103f_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe 3280 2026-04-17_3d3caa039e43d946d2e7d46c65dd103f_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe 3280 2026-04-17_3d3caa039e43d946d2e7d46c65dd103f_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe 3280 2026-04-17_3d3caa039e43d946d2e7d46c65dd103f_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe - Suspicious use of AdjustPrivilegeToken 4 IoCs
description pid Process Token: SeDebugPrivilege 3280 2026-04-17_3d3caa039e43d946d2e7d46c65dd103f_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe Token: SeTcbPrivilege 3280 2026-04-17_3d3caa039e43d946d2e7d46c65dd103f_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe Token: SeDebugPrivilege 4872 d087c4a2 Token: SeTcbPrivilege 4872 d087c4a2
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-04-17_3d3caa039e43d946d2e7d46c65dd103f_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe"C:\Users\Admin\AppData\Local\Temp\2026-04-17_3d3caa039e43d946d2e7d46c65dd103f_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:3280
-
C:\Windows\Syswow64\d087c4a2C:\Windows\Syswow64\d087c4a21⤵
- 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:4872
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Windows\SysWOW64\d087c4a2
- Size 1.4MB
- SHA256 3fe45ad7864c765491ecb7f19268ba6bda14d4d053e603052915c0b3c7031e94
- MD5 8870a3e3364e470396b8219d3970958b
- SHA1 439f7c80eaef1254d7589b8cc9b8884ee0fe7c66
- SHA512 92435cf5d738418dcdcc678acbee1263590bd089b82037a4bd3730ccc4444895b422ffe63ad6901ecf463274bfb23c434ddfdd5102ba99f1e809d07d077d70f7
- SSDEEP 24576:bjHPOSOkx2LFscU6UQOJdBqsCPhH9Do2sOfNZMjHfUr:bTGkQy56/OJdJCXDrsOFZMjHfUr
- TLSH T199658E31AAC14132E2B3867186FA56F6A5257C222711E5CF62C97B291E737D3ED3070E
- MD5 SHA1 SHA512 SSDEEP TLSH