Analysis
- max time kernel
149s - max time network
146s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows - submitted
01/08/2026, 20:27
Behavioral task
behavioral1
Sample
b37c2353714fb73100e617e2296326222be946fd365feb1307a79abdb198afff.exe
Resource
win10v2004-20260513-en
windows10-2004-x64
10 signatures
150 seconds
General
- Target b37c2353714fb73100e617e2296326222be946fd365feb1307a79abdb198afff.exe
- Size 638KB
- Sample260801-y8dmcswdkf
- SHA256 b37c2353714fb73100e617e2296326222be946fd365feb1307a79abdb198afff
- MD5 c56be257db34b33d85929851dce6f680
- SHA1 a237400d3770d2e3cd2990d64170a77d1473276b
- SHA512 5d45581306c6d62fa3da8fb97fe7ff8f8236399c75bb275c2cf916e215ccb5eb742c9e2e4415c9cb648f06d324355802efbbd76a39e28959d5801f831be1e83c
- SSDEEP 6144:5cTgav1cdCTuoPbgwmOLJvKRhLSFXdFwirGcEOkCybEaQRXr9HNdvOaey8KK5R2:5SvO2x9mONvKRhLSFtsOkx2LIaeyk5g
- TLSH T14AD46B26B6908037C0B74675C5B64BAAFAB5BC21631186CFA380761A1F737D2BE3570D
- MD5 SHA1 SHA512 SSDEEP TLSH
Malware Config
Signatures
- Executes dropped EXE 1 IoCs
pid Process 5872 b938b2d - 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 2 114.114.114.114 3440 b37c2353714fb73100e617e2296326222be946fd365feb1307a79abdb198afff.exe Destination IP 4 223.5.5.5 3440 b37c2353714fb73100e617e2296326222be946fd365feb1307a79abdb198afff.exe Destination IP 14 114.114.114.114 3440 b37c2353714fb73100e617e2296326222be946fd365feb1307a79abdb198afff.exe Destination IP 15 223.5.5.5 3440 b37c2353714fb73100e617e2296326222be946fd365feb1307a79abdb198afff.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\IE b938b2d File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies b938b2d File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft b938b2d File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache b938b2d File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData b938b2d File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\66F835E41EC6A985EB9271E4A70169D7_CF44E3C99F7F4AC558EEB35244F7E046 b938b2d File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\66F835E41EC6A985EB9271E4A70169D7_CF44E3C99F7F4AC558EEB35244F7E046 b938b2d File created C:\Windows\SysWOW64\b938b2d b37c2353714fb73100e617e2296326222be946fd365feb1307a79abdb198afff.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\Content.IE5 b938b2d File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\History\History.IE5 b938b2d File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content b938b2d -
resource yara_rule behavioral2/memory/3440-0-0x00000000007A0000-0x000000000082C000-memory.dmp upx behavioral2/files/0x000600000001b714-2.dat upx behavioral2/memory/5872-3-0x0000000000930000-0x00000000009BC000-memory.dmp upx behavioral2/memory/3440-10-0x00000000007A0000-0x000000000082C000-memory.dmp upx behavioral2/memory/5872-11-0x0000000000930000-0x00000000009BC000-memory.dmp upx behavioral2/memory/5872-23-0x0000000000930000-0x00000000009BC000-memory.dmp upx - Drops file in Windows directory 2 IoCs
description ioc Process File opened for modification C:\Windows\6487e0 b938b2d File opened for modification C:\Windows\3ae4e0 b37c2353714fb73100e617e2296326222be946fd365feb1307a79abdb198afff.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 b37c2353714fb73100e617e2296326222be946fd365feb1307a79abdb198afff.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language b938b2d - 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 b938b2d Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:" b938b2d Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ b938b2d Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1" b938b2d Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0" b938b2d Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:" b938b2d Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1" b938b2d Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1" b938b2d Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\WinTrust\Trust Providers\Software Publishing b938b2d - Suspicious behavior: EnumeratesProcesses 22 IoCs
pid Process 5872 b938b2d 5872 b938b2d 5872 b938b2d 5872 b938b2d 5872 b938b2d 5872 b938b2d 5872 b938b2d 5872 b938b2d 3440 b37c2353714fb73100e617e2296326222be946fd365feb1307a79abdb198afff.exe 3440 b37c2353714fb73100e617e2296326222be946fd365feb1307a79abdb198afff.exe 3440 b37c2353714fb73100e617e2296326222be946fd365feb1307a79abdb198afff.exe 3440 b37c2353714fb73100e617e2296326222be946fd365feb1307a79abdb198afff.exe 3440 b37c2353714fb73100e617e2296326222be946fd365feb1307a79abdb198afff.exe 3440 b37c2353714fb73100e617e2296326222be946fd365feb1307a79abdb198afff.exe 3440 b37c2353714fb73100e617e2296326222be946fd365feb1307a79abdb198afff.exe 3440 b37c2353714fb73100e617e2296326222be946fd365feb1307a79abdb198afff.exe 3440 b37c2353714fb73100e617e2296326222be946fd365feb1307a79abdb198afff.exe 3440 b37c2353714fb73100e617e2296326222be946fd365feb1307a79abdb198afff.exe 3440 b37c2353714fb73100e617e2296326222be946fd365feb1307a79abdb198afff.exe 3440 b37c2353714fb73100e617e2296326222be946fd365feb1307a79abdb198afff.exe 3440 b37c2353714fb73100e617e2296326222be946fd365feb1307a79abdb198afff.exe 3440 b37c2353714fb73100e617e2296326222be946fd365feb1307a79abdb198afff.exe - Suspicious use of AdjustPrivilegeToken 4 IoCs
description pid Process Token: SeDebugPrivilege 3440 b37c2353714fb73100e617e2296326222be946fd365feb1307a79abdb198afff.exe Token: SeTcbPrivilege 3440 b37c2353714fb73100e617e2296326222be946fd365feb1307a79abdb198afff.exe Token: SeDebugPrivilege 5872 b938b2d Token: SeTcbPrivilege 5872 b938b2d
Processes
-
C:\Users\Admin\AppData\Local\Temp\b37c2353714fb73100e617e2296326222be946fd365feb1307a79abdb198afff.exe"C:\Users\Admin\AppData\Local\Temp\b37c2353714fb73100e617e2296326222be946fd365feb1307a79abdb198afff.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:3440
-
C:\Windows\Syswow64\b938b2dC:\Windows\Syswow64\b938b2d1⤵
- 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:5872
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Windows\SysWOW64\b938b2d
- Size 638KB
- SHA256 588b89e1795e472542a0bcd87dec9eae2c25556c47ca2264f111409363dffcc8
- MD5 b9eb23554c2b2e19b490ecdd26b848d4
- SHA1 7794bbcad4f2261c1195a33f56fa86eb1e92b316
- SHA512 e7d6405c059821cd891144252bf058df2e3ffcd5a22b4f62d137347c6317d70ff18289f532f9047d6ad85ed03025d89f78dbf452b679922c96781545a6170d43
- SSDEEP 6144:4cTgav1cdCTuoPbgwmOLJvKRhLSFXdFwirGcEOkCybEaQRXr9HNdvOaey8KK5R2:4SvO2x9mONvKRhLSFtsOkx2LIaeyk5g
- TLSH T101D46B26B6908037C0B74675C5B64BAAFAB5BC21631186CFA380761A1F737D2BE3570D
- MD5 SHA1 SHA512 SSDEEP TLSH