Analysis
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max time kernel
149s -
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 13:20
Behavioral task
behavioral1
Sample
37c4b3187a66fb062d2baffa89cc2e33.exe
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
37c4b3187a66fb062d2baffa89cc2e33.exe
Resource
win10v2004-20231215-en
General
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Target
37c4b3187a66fb062d2baffa89cc2e33.exe
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Size
1.3MB
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MD5
37c4b3187a66fb062d2baffa89cc2e33
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SHA1
9540728dc59b2738e77a0ac631776cead56a9cc4
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SHA256
df4adacafc2e2a13d1fbfcad58333d72516aef4a642c0edaa46c58393609bde2
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SHA512
ff579c8964ff6c675c8716ce2acd5e789723b01303987bf6ba316b653d7b88c852f61714298310c6de757b922c10674fa60223ec56e0bd33bab69e070eee7ded
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SSDEEP
24576:Cs8p1CLEKeJmwOj09hLzAvCBnVMOaxkobWsCFbnLiCNXJ8wiuyl2Oxr13y+KqtWx:Cs8pMLEKUtdhLnKko3ClnL1N58wiuyB4
Malware Config
Signatures
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Executes dropped EXE 2 IoCs
pid Process 4092 svchost.exe 3180 setup.exe -
resource yara_rule behavioral2/memory/4812-0-0x0000000000400000-0x000000000059F000-memory.dmp upx behavioral2/files/0x0006000000023230-7.dat upx behavioral2/files/0x0006000000023230-6.dat upx behavioral2/memory/4092-9-0x0000000000400000-0x000000000059F000-memory.dmp upx behavioral2/files/0x0006000000023232-14.dat upx behavioral2/memory/3180-15-0x0000000001000000-0x0000000001333000-memory.dmp upx behavioral2/files/0x0006000000023232-13.dat upx behavioral2/memory/4812-16-0x0000000000400000-0x000000000059F000-memory.dmp upx behavioral2/memory/4092-19-0x0000000000400000-0x000000000059F000-memory.dmp upx behavioral2/memory/3180-20-0x0000000001000000-0x0000000001333000-memory.dmp upx behavioral2/memory/3180-23-0x0000000001000000-0x0000000001333000-memory.dmp upx -
Adds Run key to start application 2 TTPs 2 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\svchost = "C:\\Users\\Admin\\Localdir\\svchost.exe" 37c4b3187a66fb062d2baffa89cc2e33.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\RunOnce\wextract_cleanup0 = "rundll32.exe C:\\Windows\\system32\\advpack.dll,DelNodeRunDLL32 \"C:\\Users\\Admin\\AppData\\Local\\Temp\\IXP000.TMP\\\"" setup.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 4812 37c4b3187a66fb062d2baffa89cc2e33.exe 4092 svchost.exe -
Suspicious use of WriteProcessMemory 6 IoCs
description pid Process procid_target PID 4812 wrote to memory of 4092 4812 37c4b3187a66fb062d2baffa89cc2e33.exe 22 PID 4812 wrote to memory of 4092 4812 37c4b3187a66fb062d2baffa89cc2e33.exe 22 PID 4812 wrote to memory of 4092 4812 37c4b3187a66fb062d2baffa89cc2e33.exe 22 PID 4092 wrote to memory of 3180 4092 svchost.exe 25 PID 4092 wrote to memory of 3180 4092 svchost.exe 25 PID 4092 wrote to memory of 3180 4092 svchost.exe 25
Processes
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C:\Users\Admin\AppData\Local\Temp\37c4b3187a66fb062d2baffa89cc2e33.exe"C:\Users\Admin\AppData\Local\Temp\37c4b3187a66fb062d2baffa89cc2e33.exe"1⤵
- Adds Run key to start application
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4812 -
C:\Users\Admin\Localdir\svchost.exeC:\Users\Admin\Localdir\svchost.exe2⤵
- Executes dropped EXE
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4092 -
C:\Users\Admin\Localdir\setup.exeC:\Users\Admin\Localdir\setup.exe3⤵
- Executes dropped EXE
- Adds Run key to start application
PID:3180
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
164KB
MD556d3ea5da34bfad5b1c753805e2a6379
SHA1c932ce446efb805aaa52ea3a5869570b52779362
SHA256e6a1e29ceacd629770eaa17350028f4826e8b53e71d9789ce6cbb08a2b479d36
SHA5127d0ce9735b1994fe1e12b224213b22be8ac043231eb845823fade03b6a9119eaedfd27622dfa0c0e7593f7bafb48f534e63a10bd3ded1f3b8ccb4787cacc8597
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Filesize
130KB
MD5d0dc52fe6a8ae80d7d9eed67e304403d
SHA17b2cd3b0b7a8f39856e80fa31b83223af6f81987
SHA256c391992949bb3b1b8dba2d8911b08d32ab27062576a12371c6cc86b2312204ca
SHA51261b07e58fe62b1d0858a696d438fcf34ba3b5b7d910f0b196f28f9e8fbb3118520e2c714ae8e340d37a8b02e51c66784140b62b7152f8f26bceff8548ee7613c
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Filesize
149KB
MD5d0dbc2778147371bb1a5eb838d1a2c7f
SHA143ecf071b93b826872811246f48630a1c40d3753
SHA256f2a0611c2882fa5b92d9d4cf8570ffc81bb69d8ddc7695328e21c7175e8796a8
SHA51238d736846909facff22c308ea5764e20798dc205e0fd79a4e4b9d592a4c3fb6d2b54175b746ab511bc8d34395838c63066164f67dcf6b890d6a9c30a1c94efba
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Filesize
167KB
MD55e31aabd82e6c1b0a0ceea57fad5950c
SHA1a5e061b7af68c3b7498f9ef800ae9a47681cf26b
SHA256568882a5614b4bf3ded4878aaf34099bfa9874cb063cabf29dc5a9c59bca3116
SHA512ce9e4181a3b4ac6e6915fff1bec584bb4df411f01c5c911611b9f3b0f652d0aea926782e8292cedf8169b787442769368b6cd2ad7ff403e30334581833f93b83