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Analysis
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max time kernel
151s -
max time network
156s -
platform
windows10-2004_x64 -
resource
win10v2004-20231215-en -
resource tags
arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system -
submitted
31/12/2023, 00:37
Static task
static1
Behavioral task
behavioral1
Sample
21f811f9863e63d2e1a7e9942eea40b8.exe
Resource
win7-20231215-en
General
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Target
21f811f9863e63d2e1a7e9942eea40b8.exe
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Size
2.3MB
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MD5
21f811f9863e63d2e1a7e9942eea40b8
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SHA1
983ba2140521e049615e72c3e7d9d8702f214d83
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SHA256
0c1ddda0f5819ac85497de5400bcfb34474e3d7cd028d043525171cefef256b3
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SHA512
1ee9789aad428998d2e8c49b69ddf4e94eb6705a555947077fab1cfd56653af47cc726ff920a84b3dfebf6c1641191438b79e1829b156f95e7993acdd48f335c
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SSDEEP
49152:UM7DPU7Ku2ocLnbdq6alDLcWLDg3/UnCcxQO8NUQWWxwct1yTnlQT:UVN2DLilMheL5QWWxwct1I2
Malware Config
Signatures
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Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-996941297-2279405024-2328152752-1000\Control Panel\International\Geo\Nation 21f811f9863e63d2e1a7e9942eea40b8.exe -
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Drops file in Program Files directory 1 IoCs
description ioc Process File opened for modification C:\Program Files\Google\Chrome\Application\106.0.5249.119\chrome.dll 21f811f9863e63d2e1a7e9942eea40b8.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Program crash 12 IoCs
pid pid_target Process procid_target 3388 1104 WerFault.exe 87 2880 1104 WerFault.exe 87 4512 1104 WerFault.exe 87 4788 1104 WerFault.exe 87 5092 1104 WerFault.exe 87 4256 1104 WerFault.exe 87 4408 1104 WerFault.exe 87 652 1104 WerFault.exe 87 4500 1104 WerFault.exe 87 1672 1104 WerFault.exe 87 3296 4124 WerFault.exe 132 3596 4124 WerFault.exe 132 -
Runs ping.exe 1 TTPs 2 IoCs
pid Process 1696 PING.EXE 4104 PING.EXE -
Suspicious behavior: EnumeratesProcesses 12 IoCs
pid Process 1104 21f811f9863e63d2e1a7e9942eea40b8.exe 1104 21f811f9863e63d2e1a7e9942eea40b8.exe 1104 21f811f9863e63d2e1a7e9942eea40b8.exe 1104 21f811f9863e63d2e1a7e9942eea40b8.exe 1104 21f811f9863e63d2e1a7e9942eea40b8.exe 1104 21f811f9863e63d2e1a7e9942eea40b8.exe 1104 21f811f9863e63d2e1a7e9942eea40b8.exe 1104 21f811f9863e63d2e1a7e9942eea40b8.exe 4124 21f811f9863e63d2e1a7e9942eea40b8.exe 4124 21f811f9863e63d2e1a7e9942eea40b8.exe 4124 21f811f9863e63d2e1a7e9942eea40b8.exe 4124 21f811f9863e63d2e1a7e9942eea40b8.exe -
Suspicious use of WriteProcessMemory 15 IoCs
description pid Process procid_target PID 1104 wrote to memory of 3300 1104 21f811f9863e63d2e1a7e9942eea40b8.exe 111 PID 1104 wrote to memory of 3300 1104 21f811f9863e63d2e1a7e9942eea40b8.exe 111 PID 1104 wrote to memory of 3300 1104 21f811f9863e63d2e1a7e9942eea40b8.exe 111 PID 3300 wrote to memory of 1696 3300 cmd.exe 114 PID 3300 wrote to memory of 1696 3300 cmd.exe 114 PID 3300 wrote to memory of 1696 3300 cmd.exe 114 PID 1104 wrote to memory of 3600 1104 21f811f9863e63d2e1a7e9942eea40b8.exe 119 PID 1104 wrote to memory of 3600 1104 21f811f9863e63d2e1a7e9942eea40b8.exe 119 PID 1104 wrote to memory of 3600 1104 21f811f9863e63d2e1a7e9942eea40b8.exe 119 PID 3600 wrote to memory of 4104 3600 cmd.exe 123 PID 3600 wrote to memory of 4104 3600 cmd.exe 123 PID 3600 wrote to memory of 4104 3600 cmd.exe 123 PID 3600 wrote to memory of 4124 3600 cmd.exe 132 PID 3600 wrote to memory of 4124 3600 cmd.exe 132 PID 3600 wrote to memory of 4124 3600 cmd.exe 132
Processes
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C:\Users\Admin\AppData\Local\Temp\21f811f9863e63d2e1a7e9942eea40b8.exe"C:\Users\Admin\AppData\Local\Temp\21f811f9863e63d2e1a7e9942eea40b8.exe"1⤵
- Checks computer location settings
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1104 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 1104 -s 9122⤵
- Program crash
PID:3388
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 1104 -s 10522⤵
- Program crash
PID:2880
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 1104 -s 11962⤵
- Program crash
PID:4512
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 1104 -s 12522⤵
- Program crash
PID:4788
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 1104 -s 12682⤵
- Program crash
PID:5092
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 1104 -s 12722⤵
- Program crash
PID:4256
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 1104 -s 13322⤵
- Program crash
PID:4408
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\system32\cmd.exe" /C ping 127.0.0.1 /n 300 & "C:\Users\Admin\AppData\Local\Temp\21f811f9863e63d2e1a7e9942eea40b8.exe" 62⤵
- Suspicious use of WriteProcessMemory
PID:3300 -
C:\Windows\SysWOW64\PING.EXEping 127.0.0.1 /n 3003⤵
- Runs ping.exe
PID:1696
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 1104 -s 12882⤵
- Program crash
PID:652
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 1104 -s 10442⤵
- Program crash
PID:4500
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\system32\cmd.exe" /C ping 127.0.0.1 -n 100 & "C:\Users\Admin\AppData\Local\Temp\21f811f9863e63d2e1a7e9942eea40b8.exe" 52⤵
- Suspicious use of WriteProcessMemory
PID:3600 -
C:\Windows\SysWOW64\PING.EXEping 127.0.0.1 -n 1003⤵
- Runs ping.exe
PID:4104
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C:\Users\Admin\AppData\Local\Temp\21f811f9863e63d2e1a7e9942eea40b8.exe"C:\Users\Admin\AppData\Local\Temp\21f811f9863e63d2e1a7e9942eea40b8.exe" 53⤵
- Suspicious behavior: EnumeratesProcesses
PID:4124 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4124 -s 9124⤵
- Program crash
PID:3296
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4124 -s 1524⤵
- Program crash
PID:3596
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 1104 -s 12082⤵
- Program crash
PID:1672
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 1104 -ip 11041⤵PID:1696
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 476 -p 1104 -ip 11041⤵PID:456
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 540 -p 1104 -ip 11041⤵PID:3236
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 556 -p 1104 -ip 11041⤵PID:2920
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 552 -p 1104 -ip 11041⤵PID:1508
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 548 -p 1104 -ip 11041⤵PID:3376
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 1104 -ip 11041⤵PID:4336
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 548 -p 1104 -ip 11041⤵PID:4644
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 548 -p 1104 -ip 11041⤵PID:4348
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 496 -p 1104 -ip 11041⤵PID:3488
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 496 -p 4124 -ip 41241⤵PID:4712
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 4124 -ip 41241⤵PID:212
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
3.5MB
MD5a14b4e74c84560b88abc38f1a060aa23
SHA17b6066ad6e8e586350680e47f2dfaf720634ab4c
SHA25634e30725a8973794b3ae255106552972302cabc30f58ea7a833bcc4cc616a52f
SHA512e8a3ca50d6a9d0ea0411733aa27e7a5ee42bc993e8313076aa15e9df2d7d118a46627ecdd00579482c3a58e87d2ea85e003dd24c360655825721c71b5e881461