Analysis
- max time kernel
149s - max time network
150s - platform
windows10-2004_x64 - resource
win10v2004-20260130-en - resource tags
arch:x64arch:x86image:win10v2004-20260130-enlocale:en-usos:windows10-2004-x64systemwindows - submitted
28/04/2026, 18:45
Behavioral task
behavioral1
Sample
21bc851cfe31db1575a083c369c89ccd1c6abb10f006783da80784f26caead64.exe
Resource
win10v2004-20260130-en
windows10-2004-x64
9 signatures
150 seconds
General
- Target 21bc851cfe31db1575a083c369c89ccd1c6abb10f006783da80784f26caead64.exe
- Size 271KB
- Sample260428-xd5xpadt7y
- SHA256 21bc851cfe31db1575a083c369c89ccd1c6abb10f006783da80784f26caead64
- MD5 b0ff86db6957c717220bcce4d506d1a7
- SHA1 1a30be8c6e0690db7e64c66ca53d7fe865d163b0
- SHA512 81f1673800fd008b99fc5ba3eb14f5eeca712f6f45439f747babf868509d722aedef38063c0119ae92d5eb9ba83bd5b8d7afd7d7c0ba9484877ffeb22410b52c
- SSDEEP 6144:Sl51orRJXlDixHkUXe35rGcEOkCybEaQRXr9HNdvOa:qqXUHkUXe39sOkx2LIa
- TLSH T1E544CF5BF27440B6C49AD678C9935A5AFBF1B815872143CF1320C25A1F737E2AE3A325
- MD5 SHA1 SHA512 SSDEEP TLSH
Malware Config
Signatures
- Executes dropped EXE 1 IoCs
pid Process 2384 be408d5c - 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 1980 21bc851cfe31db1575a083c369c89ccd1c6abb10f006783da80784f26caead64.exe Destination IP 4 223.5.5.5 1980 21bc851cfe31db1575a083c369c89ccd1c6abb10f006783da80784f26caead64.exe Destination IP 38 114.114.114.114 1980 21bc851cfe31db1575a083c369c89ccd1c6abb10f006783da80784f26caead64.exe Destination IP 39 223.5.5.5 1980 21bc851cfe31db1575a083c369c89ccd1c6abb10f006783da80784f26caead64.exe - Drops file in System32 directory 15 IoCs
description ioc Process File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\66F835E41EC6A985EB9271E4A70169D7_CF44E3C99F7F4AC558EEB35244F7E046 be408d5c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\66F835E41EC6A985EB9271E4A70169D7_CF44E3C99F7F4AC558EEB35244F7E046 be408d5c File created C:\Windows\SysWOW64\be408d5c 21bc851cfe31db1575a083c369c89ccd1c6abb10f006783da80784f26caead64.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\Content.IE5 be408d5c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\History\History.IE5 be408d5c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\3EC845F33427F1C99AF855BE8930371C be408d5c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\81B9B36F9ABC4DA631A4713EE66FAEC6_D78A39BE9A7C3823659C09F61E8BD3E8 be408d5c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\81B9B36F9ABC4DA631A4713EE66FAEC6_D78A39BE9A7C3823659C09F61E8BD3E8 be408d5c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\IE be408d5c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content be408d5c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft be408d5c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData be408d5c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\3EC845F33427F1C99AF855BE8930371C be408d5c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies be408d5c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache be408d5c -
resource yara_rule behavioral1/memory/1980-0-0x0000000000A00000-0x0000000000A89000-memory.dmp upx behavioral1/files/0x0019000000024134-2.dat upx behavioral1/memory/2384-4-0x0000000000580000-0x0000000000609000-memory.dmp upx behavioral1/memory/1980-13-0x0000000000A00000-0x0000000000A89000-memory.dmp upx behavioral1/memory/2384-15-0x0000000000580000-0x0000000000609000-memory.dmp upx behavioral1/memory/2384-20-0x0000000000580000-0x0000000000609000-memory.dmp upx behavioral1/memory/1980-35-0x0000000000A00000-0x0000000000A89000-memory.dmp upx behavioral1/memory/2384-36-0x0000000000580000-0x0000000000609000-memory.dmp upx behavioral1/memory/2384-38-0x0000000000580000-0x0000000000609000-memory.dmp upx behavioral1/memory/1980-44-0x0000000000A00000-0x0000000000A89000-memory.dmp upx - Drops file in Windows directory 2 IoCs
description ioc Process File opened for modification C:\Windows\28d0a0 be408d5c File opened for modification C:\Windows\21e5f8 21bc851cfe31db1575a083c369c89ccd1c6abb10f006783da80784f26caead64.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 21bc851cfe31db1575a083c369c89ccd1c6abb10f006783da80784f26caead64.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language be408d5c - Modifies data under HKEY_USERS 9 IoCs
description ioc Process Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0" be408d5c Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\WinTrust\Trust Providers\Software Publishing be408d5c Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:" be408d5c Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:" be408d5c Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ be408d5c Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1" be408d5c Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1" be408d5c Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix be408d5c Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1" be408d5c - Suspicious behavior: EnumeratesProcesses 14 IoCs
pid Process 2384 be408d5c 2384 be408d5c 2384 be408d5c 2384 be408d5c 2384 be408d5c 2384 be408d5c 2384 be408d5c 2384 be408d5c 1980 21bc851cfe31db1575a083c369c89ccd1c6abb10f006783da80784f26caead64.exe 1980 21bc851cfe31db1575a083c369c89ccd1c6abb10f006783da80784f26caead64.exe 1980 21bc851cfe31db1575a083c369c89ccd1c6abb10f006783da80784f26caead64.exe 1980 21bc851cfe31db1575a083c369c89ccd1c6abb10f006783da80784f26caead64.exe 1980 21bc851cfe31db1575a083c369c89ccd1c6abb10f006783da80784f26caead64.exe 1980 21bc851cfe31db1575a083c369c89ccd1c6abb10f006783da80784f26caead64.exe - Suspicious use of AdjustPrivilegeToken 4 IoCs
description pid Process Token: SeDebugPrivilege 1980 21bc851cfe31db1575a083c369c89ccd1c6abb10f006783da80784f26caead64.exe Token: SeTcbPrivilege 1980 21bc851cfe31db1575a083c369c89ccd1c6abb10f006783da80784f26caead64.exe Token: SeDebugPrivilege 2384 be408d5c Token: SeTcbPrivilege 2384 be408d5c
Processes
-
C:\Users\Admin\AppData\Local\Temp\21bc851cfe31db1575a083c369c89ccd1c6abb10f006783da80784f26caead64.exe"C:\Users\Admin\AppData\Local\Temp\21bc851cfe31db1575a083c369c89ccd1c6abb10f006783da80784f26caead64.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:1980
-
C:\Windows\Syswow64\be408d5cC:\Windows\Syswow64\be408d5c1⤵
- 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:2384
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Windows\SysWOW64\be408d5c
- Size 271KB
- SHA256 a491f5a9429cbd3b1d875bd2b729e989b05c1f25374299fb4e5f6cb02091c19f
- MD5 05e6eb5a42e42cd73ae7cbe4dea55e93
- SHA1 eabf11e2865f877397bcc8fab425aaf60aa691b1
- SHA512 bff5cf753b99407c21b16924879dcdff14afbf04f01d5afa1dee911288fd1b1fdb228aade22ddbdde2fbf882b0cf0328b0e86efe47ac4864b14ee1c780217808
- SSDEEP 6144:2l51orRJXlDixHkUXe35rGcEOkCybEaQRXr9HNdvOa:+qXUHkUXe39sOkx2LIa
- TLSH T11E44CF5BF27440B6C49AD678C9935A5AFBF1B815872143CF1320C25A1F737E2AE3A325
- MD5 SHA1 SHA512 SSDEEP TLSH