Analysis
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max time kernel
148s -
max time network
146s -
platform
windows10-2004_x64 -
resource
win10v2004-20230220-en -
resource tags
arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system -
submitted
17/03/2023, 20:31
Static task
static1
Behavioral task
behavioral1
Sample
feb5a0556e226e438f4ca419f476e611df2ff7112a0668303b2da9ef1d2b89b1.exe
Resource
win10v2004-20230220-en
General
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Target
feb5a0556e226e438f4ca419f476e611df2ff7112a0668303b2da9ef1d2b89b1.exe
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Size
1.9MB
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MD5
4c89113e9ec9f66382893b6e3b206667
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SHA1
d4391bcc02d5589c6c4efc3936048825a2ccbd21
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SHA256
feb5a0556e226e438f4ca419f476e611df2ff7112a0668303b2da9ef1d2b89b1
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SHA512
349efe882aba9a626a461c02c4e431e16114a59eb916d805f7a1d3fbc2194b6c41b29757c1aa1765eac9f2b276b02ed9e66535476a9b4be7106832ce964f2b5e
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SSDEEP
49152:AThnaHxhnOJKQDTrrIw6miz+yQ3GsfYZJ:AoHxheDTrfiyyRsfYP
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 1200 ntlhost.exe -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\NTSystem = "C:\\Users\\Admin\\AppData\\Roaming\\NTSystem\\ntlhost.exe" feb5a0556e226e438f4ca419f476e611df2ff7112a0668303b2da9ef1d2b89b1.exe -
Program crash 1 IoCs
pid pid_target Process procid_target 4084 3168 WerFault.exe 82 -
GoLang User-Agent 1 IoCs
Uses default user-agent string defined by GoLang HTTP packages.
description flow ioc HTTP User-Agent header 32 Go-http-client/1.1 -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 3168 wrote to memory of 1200 3168 feb5a0556e226e438f4ca419f476e611df2ff7112a0668303b2da9ef1d2b89b1.exe 83 PID 3168 wrote to memory of 1200 3168 feb5a0556e226e438f4ca419f476e611df2ff7112a0668303b2da9ef1d2b89b1.exe 83 PID 3168 wrote to memory of 1200 3168 feb5a0556e226e438f4ca419f476e611df2ff7112a0668303b2da9ef1d2b89b1.exe 83
Processes
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C:\Users\Admin\AppData\Local\Temp\feb5a0556e226e438f4ca419f476e611df2ff7112a0668303b2da9ef1d2b89b1.exe"C:\Users\Admin\AppData\Local\Temp\feb5a0556e226e438f4ca419f476e611df2ff7112a0668303b2da9ef1d2b89b1.exe"1⤵
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:3168 -
C:\Users\Admin\AppData\Roaming\NTSystem\ntlhost.exeC:\Users\Admin\AppData\Roaming\NTSystem\ntlhost.exe2⤵
- Executes dropped EXE
PID:1200
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 3168 -s 4842⤵
- Program crash
PID:4084
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 3168 -ip 31681⤵PID:2184
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
742.1MB
MD5951b29c3a7cbb0f95981076b4e70425a
SHA1855a7987af162a01972b91089a807dc9d634c800
SHA256b809cf746815882304eeb5e713e395abc7a95f5b2ca7e82bfd8a11b25ce40a56
SHA51242cf6fc5fb8d79d63e67e15efba3967b12c91b8b935bb9df0e026b556dee15d52b1d04fc308ee89953ed52327ca109ac00c1ff4b5fc1f91dc9ffcd20f47e6f1e
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Filesize
846.0MB
MD5c644f0d0431c72a81c82399befbfd523
SHA1038fe35633abfdeb17ef8bdca17458dcaeaae796
SHA256f5823204a8287cb17880da972eb10f52366d9c4be85620797806741ca4b40299
SHA512c609579fc2cb54558dcfe6dc320417fade3540d8124e85674daee1b1ccd443e61567e563a7407c6cb62909f8136a5842f2bfc8bef5e1ee293c1e96b719ab4828