Analysis
- max time kernel
149s - max time network
146s - platform
windows11-21h2_x64 - resource
win11-20260513-en - resource tags
arch:x64arch:x86image:win11-20260513-enlocale:en-usos:windows11-21h2-x64systemwindows - submitted
29/05/2026, 04:24
Behavioral task
behavioral1
Sample
274c4732fee72153f135fd0f889a279e0bd692d2285f16fc9d5e2bf3615247aa.exe
Resource
win10v2004-20260513-en
windows10-2004-x64
8 signatures
150 seconds
General
- Target 274c4732fee72153f135fd0f889a279e0bd692d2285f16fc9d5e2bf3615247aa.exe
- Size 3.0MB
- Sample260529-e1cwbacx4m
- SHA256 274c4732fee72153f135fd0f889a279e0bd692d2285f16fc9d5e2bf3615247aa
- MD5 e5d27ca217bd2c7e7e34172ebd39df19
- SHA1 154707cbc7f3dc2e96d176137153f8625ff7533e
- SHA512 9fcde23537cb941fd27d500880a29f142a951f0b8a9012d5d567115c6f72f77b7ea10dfc2885402d84fe497f99165410e81a3531331750ad0b05183d4c1a0551
- SSDEEP 49152:MA/JuTQKqVmgbQIzZMPXpB91rHpn/qKmNAOaG6IOY/:L/whnLrHp/qKm2/Sb/
- TLSH T1CAE55953EB914AE8E39D0536DF544150E72AF2256BEF13A27428420DDE83387BF61A3D
- MD5 SHA1 SHA512 SSDEEP TLSH
Malware Config
Signatures
- Executes dropped EXE 1 IoCs
pid Process 3496 1f87fd5b - 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 22 114.114.114.114 2224 274c4732fee72153f135fd0f889a279e0bd692d2285f16fc9d5e2bf3615247aa.exe Destination IP 23 223.5.5.5 2224 274c4732fee72153f135fd0f889a279e0bd692d2285f16fc9d5e2bf3615247aa.exe Destination IP 1 114.114.114.114 2224 274c4732fee72153f135fd0f889a279e0bd692d2285f16fc9d5e2bf3615247aa.exe Destination IP 2 223.5.5.5 2224 274c4732fee72153f135fd0f889a279e0bd692d2285f16fc9d5e2bf3615247aa.exe - Drops file in System32 directory 15 IoCs
description ioc Process File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\66F835E41EC6A985EB9271E4A70169D7_CF44E3C99F7F4AC558EEB35244F7E046 1f87fd5b File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData 1f87fd5b File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\81B9B36F9ABC4DA631A4713EE66FAEC6_D78A39BE9A7C3823659C09F61E8BD3E8 1f87fd5b File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\IE 1f87fd5b File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\History\History.IE5 1f87fd5b File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content 1f87fd5b File created C:\Windows\SysWOW64\1f87fd5b 274c4732fee72153f135fd0f889a279e0bd692d2285f16fc9d5e2bf3615247aa.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\Content.IE5 1f87fd5b File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies 1f87fd5b File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft 1f87fd5b File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\57C8EDB95DF3F0AD4EE2DC2B8CFD4157 1f87fd5b File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\57C8EDB95DF3F0AD4EE2DC2B8CFD4157 1f87fd5b File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\66F835E41EC6A985EB9271E4A70169D7_CF44E3C99F7F4AC558EEB35244F7E046 1f87fd5b File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache 1f87fd5b File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\81B9B36F9ABC4DA631A4713EE66FAEC6_D78A39BE9A7C3823659C09F61E8BD3E8 1f87fd5b -
resource yara_rule behavioral2/memory/2224-0-0x00000000005C0000-0x00000000008C5000-memory.dmp upx behavioral2/files/0x000f000000025a27-2.dat upx behavioral2/memory/3496-4-0x0000000000FD0000-0x00000000012D5000-memory.dmp upx behavioral2/memory/2224-13-0x00000000005C0000-0x00000000008C5000-memory.dmp upx behavioral2/memory/3496-14-0x0000000000FD0000-0x00000000012D5000-memory.dmp upx behavioral2/memory/3496-21-0x0000000000FD0000-0x00000000012D5000-memory.dmp upx - 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 274c4732fee72153f135fd0f889a279e0bd692d2285f16fc9d5e2bf3615247aa.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 1f87fd5b - 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 1f87fd5b Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:" 1f87fd5b Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1" 1f87fd5b Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1" 1f87fd5b Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\WinTrust\Trust Providers\Software Publishing 1f87fd5b Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:" 1f87fd5b Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ 1f87fd5b Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1" 1f87fd5b Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0" 1f87fd5b - Suspicious behavior: EnumeratesProcesses 14 IoCs
pid Process 3496 1f87fd5b 3496 1f87fd5b 3496 1f87fd5b 3496 1f87fd5b 3496 1f87fd5b 3496 1f87fd5b 3496 1f87fd5b 3496 1f87fd5b 2224 274c4732fee72153f135fd0f889a279e0bd692d2285f16fc9d5e2bf3615247aa.exe 2224 274c4732fee72153f135fd0f889a279e0bd692d2285f16fc9d5e2bf3615247aa.exe 2224 274c4732fee72153f135fd0f889a279e0bd692d2285f16fc9d5e2bf3615247aa.exe 2224 274c4732fee72153f135fd0f889a279e0bd692d2285f16fc9d5e2bf3615247aa.exe 2224 274c4732fee72153f135fd0f889a279e0bd692d2285f16fc9d5e2bf3615247aa.exe 2224 274c4732fee72153f135fd0f889a279e0bd692d2285f16fc9d5e2bf3615247aa.exe - Suspicious use of AdjustPrivilegeToken 4 IoCs
description pid Process Token: SeDebugPrivilege 2224 274c4732fee72153f135fd0f889a279e0bd692d2285f16fc9d5e2bf3615247aa.exe Token: SeTcbPrivilege 2224 274c4732fee72153f135fd0f889a279e0bd692d2285f16fc9d5e2bf3615247aa.exe Token: SeDebugPrivilege 3496 1f87fd5b Token: SeTcbPrivilege 3496 1f87fd5b
Processes
-
C:\Users\Admin\AppData\Local\Temp\274c4732fee72153f135fd0f889a279e0bd692d2285f16fc9d5e2bf3615247aa.exe"C:\Users\Admin\AppData\Local\Temp\274c4732fee72153f135fd0f889a279e0bd692d2285f16fc9d5e2bf3615247aa.exe"1⤵
- Unexpected DNS network traffic destination
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2224
-
C:\Windows\Syswow64\1f87fd5bC:\Windows\Syswow64\1f87fd5b1⤵
- Executes dropped EXE
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3496
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Windows\SysWOW64\1f87fd5b
- Size 3.0MB
- SHA256 df74deecdcced9fd21c1670c11b8e05fead271ce1548002708f1b4ba0f4bf456
- MD5 b5e298b89b594840dca77dfb8c455dcc
- SHA1 d04071d9e9eea8fecd6a07dd6e42a6aa93e0b309
- SHA512 427a1068fe84c3c9b6e151db485e3b25fa67f56b269150f1dd47b810e72cb9380d04a9282686a57344f417a76a51434a82f8940e753f94bc385202ae2b7197b7
- SSDEEP 49152:TA/JuTQKqVmgbQIzZMPXpB91rHpn/qKmNAOaG6IOY/:E/whnLrHp/qKm2/Sb/
- TLSH T187E55953EB914AE8E39D0536DF544150E72AF2256BEF13A27428420DDE83387BF61A3D
- MD5 SHA1 SHA512 SSDEEP TLSH