Analysis
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max time kernel
146s -
max time network
151s -
platform
windows10-2004_x64 -
resource
win10v2004-20230220-en -
resource tags
arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system -
submitted
21-03-2023 14:54
Static task
static1
Behavioral task
behavioral1
Sample
b8f2cf76783ff5c0a37c9634bc7d467a4e4fd6a0a0863855189facb12169758a.exe
Resource
win10v2004-20230220-en
General
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Target
b8f2cf76783ff5c0a37c9634bc7d467a4e4fd6a0a0863855189facb12169758a.exe
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Size
1.9MB
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MD5
15c6aba7e0ed4f17fb306502255213b6
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SHA1
1ef72d0e935ceb5a7eb44757ce554c0f229030b6
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SHA256
b8f2cf76783ff5c0a37c9634bc7d467a4e4fd6a0a0863855189facb12169758a
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SHA512
743d8902fa293ddd45f9f3231d491a0388ce0b9fd248638ab9ba64d296d04550cc53560ca2c45eb81eac5bf81f2319433afca59ca85bfffafed51697537b1dba
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SSDEEP
49152:mbFd7fbK/pXSm1OAacQOZOAsM/fcjozJcCwAu78BOu2ibtQ:mpljK/pdOAjQJM/ffz2v0giRQ
Malware Config
Extracted
laplas
http://45.87.154.105
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api_key
1c630872d348a77d04368d542fde4663bc2bcb96f1b909554db3472c08df2767
Signatures
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Executes dropped EXE 1 IoCs
pid Process 5080 ntlhost.exe -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-1675742406-747946869-1029867430-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\NTSystem = "C:\\Users\\Admin\\AppData\\Roaming\\NTSystem\\ntlhost.exe" b8f2cf76783ff5c0a37c9634bc7d467a4e4fd6a0a0863855189facb12169758a.exe -
GoLang User-Agent 1 IoCs
Uses default user-agent string defined by GoLang HTTP packages.
description flow ioc HTTP User-Agent header 67 Go-http-client/1.1 -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 1288 wrote to memory of 5080 1288 b8f2cf76783ff5c0a37c9634bc7d467a4e4fd6a0a0863855189facb12169758a.exe 88 PID 1288 wrote to memory of 5080 1288 b8f2cf76783ff5c0a37c9634bc7d467a4e4fd6a0a0863855189facb12169758a.exe 88 PID 1288 wrote to memory of 5080 1288 b8f2cf76783ff5c0a37c9634bc7d467a4e4fd6a0a0863855189facb12169758a.exe 88
Processes
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C:\Users\Admin\AppData\Local\Temp\b8f2cf76783ff5c0a37c9634bc7d467a4e4fd6a0a0863855189facb12169758a.exe"C:\Users\Admin\AppData\Local\Temp\b8f2cf76783ff5c0a37c9634bc7d467a4e4fd6a0a0863855189facb12169758a.exe"1⤵
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:1288 -
C:\Users\Admin\AppData\Roaming\NTSystem\ntlhost.exeC:\Users\Admin\AppData\Roaming\NTSystem\ntlhost.exe2⤵
- Executes dropped EXE
PID:5080
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
785.9MB
MD5d2d7e318c583592c4d02555439541e1e
SHA142cb7a0874a32895e2b4ea284b22299876728fa0
SHA256742c252216a939ffc0261086657deccce64383ac6d12896517667af7c6849211
SHA5122f6b41443cbcc76e23a727805a80a3a105bd562e8b299dd7b404ea98262d457b3ae2d3c83b4fd8338584ebc0b20347063e4c3e5db90245dace6888a4927c93b7
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Filesize
785.9MB
MD5d2d7e318c583592c4d02555439541e1e
SHA142cb7a0874a32895e2b4ea284b22299876728fa0
SHA256742c252216a939ffc0261086657deccce64383ac6d12896517667af7c6849211
SHA5122f6b41443cbcc76e23a727805a80a3a105bd562e8b299dd7b404ea98262d457b3ae2d3c83b4fd8338584ebc0b20347063e4c3e5db90245dace6888a4927c93b7