Analysis
- max time kernel
149s - max time network
149s - platform
windows11-21h2_x64 - resource
win11-20260130-en - resource tags
arch:x64arch:x86image:win11-20260130-enlocale:en-usos:windows11-21h2-x64systemwindows - submitted
15/04/2026, 04:48
Behavioral task
behavioral1
Sample
2026-04-15_a7e248986f322532c7f3f462f6508fc9_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe
Resource
win10v2004-20260130-en
windows10-2004-x64
12 signatures
150 seconds
General
- Target 2026-04-15_a7e248986f322532c7f3f462f6508fc9_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe
- Size 768KB
- Sample260415-ffe1lsat3t
- SHA256 7695ffeb97d90ac81065031c95ae766e1d9c64fb73e363eff08d97c08985efe5
- MD5 a7e248986f322532c7f3f462f6508fc9
- SHA1 99de27e66f5c132854ed3ff6fa4d67c34390a12b
- SHA512 52e1694e2dd81d4c47cca4b77cf9357507b9d9140093de6b685c4909d92e3fdbce35cb0fb59c60336d81eb773251ef36595dcc3b4ce345ff0817d6db43e6325d
- SSDEEP 12288:dqXUHkUXe39sOkx2LIan5FAQjU/LikGU5rCOTeidT:djHPOSOkx2LFscU6UQOJdT
- TLSH T138F47D31E241C036D6A74572C6FA4BBBA5247D25431161CBA7C4BA262FB76D2FA3130F
- MD5 SHA1 SHA512 SSDEEP TLSH
Malware Config
Signatures
- Detection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral2/files/0x001d00000002b0f5-2.dat CryptoLocker_rule2 - Detection of Cryptolocker Samples 1 IoCs
resource yara_rule behavioral2/files/0x001d00000002b0f5-2.dat CryptoLocker_set1 - UPX dump on OEP (original entry point) 9 IoCs
resource yara_rule behavioral2/memory/4340-0-0x0000000000F40000-0x0000000000FC9000-memory.dmp UPX behavioral2/files/0x001d00000002b0f5-2.dat UPX behavioral2/memory/1500-14-0x0000000000530000-0x00000000005B9000-memory.dmp UPX behavioral2/memory/4340-17-0x0000000000F40000-0x0000000000FC9000-memory.dmp UPX behavioral2/memory/1500-19-0x0000000000530000-0x00000000005B9000-memory.dmp UPX behavioral2/memory/4340-33-0x0000000000F40000-0x0000000000FC9000-memory.dmp UPX behavioral2/memory/1500-34-0x0000000000530000-0x00000000005B9000-memory.dmp UPX behavioral2/memory/4340-54-0x0000000000F40000-0x0000000000FC9000-memory.dmp UPX behavioral2/memory/4340-61-0x0000000000F40000-0x0000000000FC9000-memory.dmp UPX - Executes dropped EXE 1 IoCs
pid Process 1500 4eac986c - 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 4340 2026-04-15_a7e248986f322532c7f3f462f6508fc9_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe Destination IP 2 223.5.5.5 4340 2026-04-15_a7e248986f322532c7f3f462f6508fc9_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe Destination IP 9 114.114.114.114 4340 2026-04-15_a7e248986f322532c7f3f462f6508fc9_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe Destination IP 10 223.5.5.5 4340 2026-04-15_a7e248986f322532c7f3f462f6508fc9_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\History\History.IE5 4eac986c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache 4eac986c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData 4eac986c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content 4eac986c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\81B9B36F9ABC4DA631A4713EE66FAEC6_D78A39BE9A7C3823659C09F61E8BD3E8 4eac986c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\3EC845F33427F1C99AF855BE8930371C 4eac986c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\Content.IE5 4eac986c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\IE 4eac986c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\57C8EDB95DF3F0AD4EE2DC2B8CFD4157 4eac986c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\66F835E41EC6A985EB9271E4A70169D7_CF44E3C99F7F4AC558EEB35244F7E046 4eac986c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\81B9B36F9ABC4DA631A4713EE66FAEC6_D78A39BE9A7C3823659C09F61E8BD3E8 4eac986c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies 4eac986c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\57C8EDB95DF3F0AD4EE2DC2B8CFD4157 4eac986c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\66F835E41EC6A985EB9271E4A70169D7_CF44E3C99F7F4AC558EEB35244F7E046 4eac986c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\3EC845F33427F1C99AF855BE8930371C 4eac986c File created C:\Windows\SysWOW64\4eac986c 2026-04-15_a7e248986f322532c7f3f462f6508fc9_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft 4eac986c -
resource yara_rule behavioral2/memory/4340-0-0x0000000000F40000-0x0000000000FC9000-memory.dmp upx behavioral2/files/0x001d00000002b0f5-2.dat upx behavioral2/memory/1500-14-0x0000000000530000-0x00000000005B9000-memory.dmp upx behavioral2/memory/4340-17-0x0000000000F40000-0x0000000000FC9000-memory.dmp upx behavioral2/memory/1500-19-0x0000000000530000-0x00000000005B9000-memory.dmp upx behavioral2/memory/4340-33-0x0000000000F40000-0x0000000000FC9000-memory.dmp upx behavioral2/memory/1500-34-0x0000000000530000-0x00000000005B9000-memory.dmp upx behavioral2/memory/4340-54-0x0000000000F40000-0x0000000000FC9000-memory.dmp upx behavioral2/memory/4340-61-0x0000000000F40000-0x0000000000FC9000-memory.dmp upx - Drops file in Windows directory 2 IoCs
description ioc Process File opened for modification C:\Windows\19ae38 4eac986c File opened for modification C:\Windows\4a4d68 2026-04-15_a7e248986f322532c7f3f462f6508fc9_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 2026-04-15_a7e248986f322532c7f3f462f6508fc9_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 4eac986c - Modifies data under HKEY_USERS 9 IoCs
description ioc Process Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1" 4eac986c Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0" 4eac986c Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\WinTrust\Trust Providers\Software Publishing 4eac986c Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix 4eac986c Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:" 4eac986c Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1" 4eac986c Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1" 4eac986c Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:" 4eac986c Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ 4eac986c - Suspicious behavior: EnumeratesProcesses 26 IoCs
pid Process 1500 4eac986c 1500 4eac986c 1500 4eac986c 1500 4eac986c 1500 4eac986c 1500 4eac986c 1500 4eac986c 1500 4eac986c 1500 4eac986c 1500 4eac986c 1500 4eac986c 1500 4eac986c 1500 4eac986c 1500 4eac986c 1500 4eac986c 1500 4eac986c 1500 4eac986c 1500 4eac986c 1500 4eac986c 1500 4eac986c 4340 2026-04-15_a7e248986f322532c7f3f462f6508fc9_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe 4340 2026-04-15_a7e248986f322532c7f3f462f6508fc9_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe 4340 2026-04-15_a7e248986f322532c7f3f462f6508fc9_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe 4340 2026-04-15_a7e248986f322532c7f3f462f6508fc9_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe 4340 2026-04-15_a7e248986f322532c7f3f462f6508fc9_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe 4340 2026-04-15_a7e248986f322532c7f3f462f6508fc9_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe - Suspicious use of AdjustPrivilegeToken 4 IoCs
description pid Process Token: SeDebugPrivilege 4340 2026-04-15_a7e248986f322532c7f3f462f6508fc9_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe Token: SeTcbPrivilege 4340 2026-04-15_a7e248986f322532c7f3f462f6508fc9_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe Token: SeDebugPrivilege 1500 4eac986c Token: SeTcbPrivilege 1500 4eac986c
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-04-15_a7e248986f322532c7f3f462f6508fc9_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe"C:\Users\Admin\AppData\Local\Temp\2026-04-15_a7e248986f322532c7f3f462f6508fc9_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:4340
-
C:\Windows\Syswow64\4eac986cC:\Windows\Syswow64\4eac986c1⤵
- 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:1500
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Windows\19ae38
- Size 916B
- SHA256 d26f928d0eca1bb4a6fe062d62b0a2a06d1cbac63a263dd1e9c00bd72ae0dce1
- MD5 26dfcace0d92b17b779f8af7de125616
- SHA1 8ae6b7862eb627ef3c238d579871d9a884f5f125
- SHA512 5ceb6f4d10d0e643b21419167715db884aeee88ffedb6eb0c70929f0928563550609f2319b29da0a9ea92e6416e26af7f6b7fe7f37c301fb5dbc417eacb2d835
- TLSH T1E0115C72A0541DBA1DDDC50BC443A8C2F1608025444623A41AFB328557B3B6A4E4A63E
- MD5 SHA1 SHA512 TLSH
- Path C:\Windows\SysWOW64\4eac986c
- Size 768KB
- SHA256 4ced1c37ee775f1a33b3201ce33f24b0ad6f87d3fceb31af57fa2e91fb45052a
- MD5 0f506bcd43e0acb8e8b156a9c066ee71
- SHA1 383ea046de9d7f817730b400959af558b67d6828
- SHA512 85d279051ae679e93e7bd524e9c1003367dd68043689d760a1d4e36e0b82ac37ac91dbbcf8ff5930e6fb53df372b81e2527e03d953cc06ca2768ddafc9924f16
- SSDEEP 12288:ZqXUHkUXe39sOkx2LIan5FAQjU/LikGU5rCOTeidT:ZjHPOSOkx2LFscU6UQOJdT
- TLSH T161F47D31E241C036D6A74572C6FA4BBBA5247D25431161CBA7C4BA262FB76D2FA3130F
- MD5 SHA1 SHA512 SSDEEP TLSH