Analysis
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max time kernel
150s -
max time network
136s -
platform
windows7_x64 -
resource
win7-20241023-en -
resource tags
arch:x64arch:x86image:win7-20241023-enlocale:en-usos:windows7-x64system -
submitted
17-12-2024 22:55
Behavioral task
behavioral1
Sample
Client-built.exe
Resource
win7-20241023-en
General
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Target
Client-built.exe
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Size
3.1MB
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MD5
0f36e81c4c276b154458f7d2a09f5b10
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SHA1
3093c8cf4822174621d6f84f6aa3f5a14de3ca7d
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SHA256
544152f92e0a8802c3b9239d713fdcfab852d86635a018a09c3f23a89850fdc8
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SHA512
f92dd2e1e90ab79eb7559d5ac5b07172d5a369047d17e505085463aeadb1b32a5a79d810c3e8c8baecc67cf53d2b9c74d2c78ce7ef27f556f3d4b3a04ec4c002
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SSDEEP
49152:fvXlL26AaNeWgPhlmVqvMQ7XSKMrARoGddYnTHHB72eh2NT:fvVL26AaNeWgPhlmVqkQ7XSKMrqW
Malware Config
Extracted
quasar
1.4.1
Office04
football-jumping.gl.at.ply.gg:10230
1ebb2be2-2e75-4e5f-a17a-94f1122ac527
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encryption_key
AD7F465AC5FC4664CDCEA5C89989197BE33BEF08
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install_name
talktuah.exe
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log_directory
Logs
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reconnect_delay
3000
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startup_key
Quasar Client Startup
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subdirectory
SubDir
Signatures
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Quasar family
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Quasar payload 3 IoCs
resource yara_rule behavioral1/memory/2912-1-0x0000000000820000-0x0000000000B44000-memory.dmp family_quasar behavioral1/files/0x0034000000015c8b-6.dat family_quasar behavioral1/memory/2792-9-0x00000000011A0000-0x00000000014C4000-memory.dmp family_quasar -
Executes dropped EXE 1 IoCs
pid Process 2792 talktuah.exe -
Drops file in System32 directory 5 IoCs
description ioc Process File created C:\Windows\system32\SubDir\talktuah.exe Client-built.exe File opened for modification C:\Windows\system32\SubDir\talktuah.exe Client-built.exe File opened for modification C:\Windows\system32\SubDir Client-built.exe File opened for modification C:\Windows\system32\SubDir\talktuah.exe talktuah.exe File opened for modification C:\Windows\system32\SubDir talktuah.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeDebugPrivilege 2912 Client-built.exe Token: SeDebugPrivilege 2792 talktuah.exe -
Suspicious use of FindShellTrayWindow 1 IoCs
pid Process 2792 talktuah.exe -
Suspicious use of SendNotifyMessage 1 IoCs
pid Process 2792 talktuah.exe -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 2912 wrote to memory of 2792 2912 Client-built.exe 30 PID 2912 wrote to memory of 2792 2912 Client-built.exe 30 PID 2912 wrote to memory of 2792 2912 Client-built.exe 30
Processes
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C:\Users\Admin\AppData\Local\Temp\Client-built.exe"C:\Users\Admin\AppData\Local\Temp\Client-built.exe"1⤵
- Drops file in System32 directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2912 -
C:\Windows\system32\SubDir\talktuah.exe"C:\Windows\system32\SubDir\talktuah.exe"2⤵
- Executes dropped EXE
- Drops file in System32 directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
PID:2792
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
3.1MB
MD50f36e81c4c276b154458f7d2a09f5b10
SHA13093c8cf4822174621d6f84f6aa3f5a14de3ca7d
SHA256544152f92e0a8802c3b9239d713fdcfab852d86635a018a09c3f23a89850fdc8
SHA512f92dd2e1e90ab79eb7559d5ac5b07172d5a369047d17e505085463aeadb1b32a5a79d810c3e8c8baecc67cf53d2b9c74d2c78ce7ef27f556f3d4b3a04ec4c002