Analysis
- max time kernel
149s - max time network
150s - platform
windows10-2004_x64 - resource
win10v2004-20260513-en - resource tags
arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows - submitted
04/08/2026, 12:39
Behavioral task
behavioral1
Sample
2026-08-03_2b8d8be7132eb665dc1ea68fb277a149_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe
Resource
win10v2004-20260513-en
windows10-2004-x64
12 signatures
150 seconds
General
- Target 2026-08-03_2b8d8be7132eb665dc1ea68fb277a149_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe
- Size 1.4MB
- Sample260804-pvmtfawzb1
- SHA256 81fa9f2a44bca35d2d023dd41cfe5f4d5e68b09c1a6ee5b5e343a41dc81f85f7
- MD5 2b8d8be7132eb665dc1ea68fb277a149
- SHA1 d42c80019bcc8aad2406f82ede88f02622018843
- SHA512 59e6ecb552d1ba8e2646d9b738bbacbdd35be0a69528558ffd32da0f504322a2e89525ba39ae7f8f68d3ccc9425e9e02c829afb18e8de96df9ed50075de4a5ea
- SSDEEP 24576:8jHPOSOkx2LFscU6UQOJdBqsCPhH9Do2sOfNZMjHfUr:8TGkQy56/OJdJCXDrsOFZMjHfUr
- TLSH T159658E31AAC14132E2B3867186FA56F6A5257C222711E5CF62C97B291E737D3ED3070E
- MD5 SHA1 SHA512 SSDEEP TLSH
Malware Config
Signatures
- Detection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral1/files/0x000f0000000231f3-4.dat CryptoLocker_rule2 - Detection of Cryptolocker Samples 1 IoCs
resource yara_rule behavioral1/files/0x000f0000000231f3-4.dat CryptoLocker_set1 - UPX dump on OEP (original entry point) 10 IoCs
resource yara_rule behavioral1/memory/4748-0-0x00000000002D0000-0x0000000000359000-memory.dmp UPX behavioral1/files/0x000f0000000231f3-4.dat UPX behavioral1/memory/4688-3-0x00000000001F0000-0x0000000000279000-memory.dmp UPX behavioral1/memory/4748-13-0x00000000002D0000-0x0000000000359000-memory.dmp UPX behavioral1/memory/4688-15-0x00000000001F0000-0x0000000000279000-memory.dmp UPX behavioral1/memory/4748-27-0x00000000002D0000-0x0000000000359000-memory.dmp UPX behavioral1/memory/4688-28-0x00000000001F0000-0x0000000000279000-memory.dmp UPX behavioral1/memory/4748-32-0x00000000002D0000-0x0000000000359000-memory.dmp UPX behavioral1/memory/4688-37-0x00000000001F0000-0x0000000000279000-memory.dmp UPX behavioral1/memory/4748-46-0x00000000002D0000-0x0000000000359000-memory.dmp UPX - Executes dropped EXE 1 IoCs
pid Process 4688 859d5d9c - 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 3 114.114.114.114 4748 2026-08-03_2b8d8be7132eb665dc1ea68fb277a149_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe Destination IP 8 223.5.5.5 4748 2026-08-03_2b8d8be7132eb665dc1ea68fb277a149_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe Destination IP 44 114.114.114.114 4748 2026-08-03_2b8d8be7132eb665dc1ea68fb277a149_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe Destination IP 45 223.5.5.5 4748 2026-08-03_2b8d8be7132eb665dc1ea68fb277a149_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe - Drops file in System32 directory 11 IoCs
description ioc Process File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\Content.IE5 859d5d9c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\History\History.IE5 859d5d9c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache 859d5d9c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData 859d5d9c File created C:\Windows\SysWOW64\859d5d9c 2026-08-03_2b8d8be7132eb665dc1ea68fb277a149_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\IE 859d5d9c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies 859d5d9c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft 859d5d9c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\66F835E41EC6A985EB9271E4A70169D7_CF44E3C99F7F4AC558EEB35244F7E046 859d5d9c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content 859d5d9c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\66F835E41EC6A985EB9271E4A70169D7_CF44E3C99F7F4AC558EEB35244F7E046 859d5d9c -
resource yara_rule behavioral1/memory/4748-0-0x00000000002D0000-0x0000000000359000-memory.dmp upx behavioral1/files/0x000f0000000231f3-4.dat upx behavioral1/memory/4688-3-0x00000000001F0000-0x0000000000279000-memory.dmp upx behavioral1/memory/4748-13-0x00000000002D0000-0x0000000000359000-memory.dmp upx behavioral1/memory/4688-15-0x00000000001F0000-0x0000000000279000-memory.dmp upx behavioral1/memory/4748-27-0x00000000002D0000-0x0000000000359000-memory.dmp upx behavioral1/memory/4688-28-0x00000000001F0000-0x0000000000279000-memory.dmp upx behavioral1/memory/4748-32-0x00000000002D0000-0x0000000000359000-memory.dmp upx behavioral1/memory/4688-37-0x00000000001F0000-0x0000000000279000-memory.dmp upx behavioral1/memory/4748-46-0x00000000002D0000-0x0000000000359000-memory.dmp upx - Drops file in Windows directory 2 IoCs
description ioc Process File opened for modification C:\Windows\514998 2026-08-03_2b8d8be7132eb665dc1ea68fb277a149_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe File opened for modification C:\Windows\5042a0 859d5d9c - 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 2026-08-03_2b8d8be7132eb665dc1ea68fb277a149_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 859d5d9c - 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:" 859d5d9c Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:" 859d5d9c Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ 859d5d9c Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1" 859d5d9c Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0" 859d5d9c Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix 859d5d9c Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1" 859d5d9c Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1" 859d5d9c Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\WinTrust\Trust Providers\Software Publishing 859d5d9c - Suspicious behavior: EnumeratesProcesses 14 IoCs
pid Process 4688 859d5d9c 4688 859d5d9c 4688 859d5d9c 4688 859d5d9c 4688 859d5d9c 4688 859d5d9c 4688 859d5d9c 4688 859d5d9c 4748 2026-08-03_2b8d8be7132eb665dc1ea68fb277a149_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe 4748 2026-08-03_2b8d8be7132eb665dc1ea68fb277a149_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe 4748 2026-08-03_2b8d8be7132eb665dc1ea68fb277a149_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe 4748 2026-08-03_2b8d8be7132eb665dc1ea68fb277a149_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe 4748 2026-08-03_2b8d8be7132eb665dc1ea68fb277a149_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe 4748 2026-08-03_2b8d8be7132eb665dc1ea68fb277a149_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe - Suspicious use of AdjustPrivilegeToken 4 IoCs
description pid Process Token: SeDebugPrivilege 4748 2026-08-03_2b8d8be7132eb665dc1ea68fb277a149_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe Token: SeTcbPrivilege 4748 2026-08-03_2b8d8be7132eb665dc1ea68fb277a149_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe Token: SeDebugPrivilege 4688 859d5d9c Token: SeTcbPrivilege 4688 859d5d9c
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-08-03_2b8d8be7132eb665dc1ea68fb277a149_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe"C:\Users\Admin\AppData\Local\Temp\2026-08-03_2b8d8be7132eb665dc1ea68fb277a149_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:4748
-
C:\Windows\Syswow64\859d5d9cC:\Windows\Syswow64\859d5d9c1⤵
- 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:4688
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Windows\SysWOW64\859d5d9c
- Size 1.4MB
- SHA256 5c438d10731d6b723a910fee86e639f65fce3ab39449ee831279930d3575f6e0
- MD5 1dc8088a420d8331ba31fc86e95d2852
- SHA1 a54f9a1a91f925afa0615a3a5d858c083febe622
- SHA512 61d7c6b4a2d581e710d29fa162eba845b94d038d8f569e03663b027d398e315a0362309108592539ca2bc34aa4de9ecc186fba66028cb498d689dacbfa05b26d
- SSDEEP 24576:IjHPOSOkx2LFscU6UQOJdBqsCPhH9Do2sOfNZMjHfUr:ITGkQy56/OJdJCXDrsOFZMjHfUr
- TLSH T162658E31AAC14132E2B3867186FA56F6A5257C222711E5CF62C97B291E737D3ED3070E
- MD5 SHA1 SHA512 SSDEEP TLSH