quasar | dc2e73a62f8b7544a3c9597784c56e59f9e6f3ec15842b2be8b45ede3634cf94

Analysis

max time kernel
145s
max time network
148s
platform
windows10-2004_x64
resource
win10v2004-20230703-en
resource tags

arch:x64arch:x86image:win10v2004-20230703-enlocale:en-usos:windows10-2004-x64system
submitted
31-07-2023 01:01

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General

Target

asdasdsada.exe
Size

3.1MB
MD5

05a5ad59a263d577fbf7824da19f52c0
SHA1

f1e59d269eba32b689b955666ac2b7cb7f28eb71
SHA256

dc2e73a62f8b7544a3c9597784c56e59f9e6f3ec15842b2be8b45ede3634cf94
SHA512

28f630d95b47940f1a9259191931ee6c2548fdbe34af5064626f55f1c798b5c0cd91a5d46440298b95e57b7b532696b48b8bb5605fd3e80db6073a217424be49
SSDEEP

49152:fvWlL26AaNeWgPhlmVqvMQ7XSKzvRJ6wbR3LoGd0THHB72eh2NT:fvWL26AaNeWgPhlmVqkQ7XSKzvRJ6K

Score

10^/10

quasar infected spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Infected

192.168.1.1:4782

192.168.1.66:4782

Mutex

ff410ede-beff-4970-8e12-7d251057f1fd

Attributes

encryption_key
1B172706DED462B59F2A5056AB06A8DD1EE8491B
install_name
Client.exe
log_directory
Logs
reconnect_delay
3000
startup_key
Quasar Client Startup
subdirectory
SubDir

Signatures

Quasar RAT
Quasar is an open source Remote Access Tool.
trojan spyware quasar

Quasar payload 3 IoCs

Processes:

resource	yara_rule
behavioral2/memory/4440-133-0x0000000000700000-0x0000000000A24000-memory.dmp	family_quasar
C:\Users\Admin\AppData\Roaming\SubDir\Client.exe	family_quasar
C:\Users\Admin\AppData\Roaming\SubDir\Client.exe	family_quasar

Executes dropped EXE 1 IoCs

Processes:

Client.exe

pid process

4568 Client.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

asdasdsada.exeClient.exe

description pid process

Token: SeDebugPrivilege 4440 asdasdsada.exe
Token: SeDebugPrivilege 4568 Client.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

Client.exe

pid process

4568 Client.exe

pid	process
4568	Client.exe

description	pid	process
Token: SeDebugPrivilege	4440	asdasdsada.exe
Token: SeDebugPrivilege	4568	Client.exe

pid	process
4568	Client.exe

Suspicious use of WriteProcessMemory 2 IoCs

Processes:

asdasdsada.exe

description	pid	process	target process
PID 4440 wrote to memory of 4568	4440	asdasdsada.exe	Client.exe
PID 4440 wrote to memory of 4568	4440	asdasdsada.exe	Client.exe

C:\Users\Admin\AppData\Local\Temp\asdasdsada.exe
"C:\Users\Admin\AppData\Local\Temp\asdasdsada.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4440

C:\Users\Admin\AppData\Roaming\SubDir\Client.exe
"C:\Users\Admin\AppData\Roaming\SubDir\Client.exe"
2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:4568

Network

MITRE ATT&CK Matrix

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Downloads

C:\Users\Admin\AppData\Roaming\SubDir\Client.exe
Filesize
3.1MB

MD5
05a5ad59a263d577fbf7824da19f52c0

SHA1
f1e59d269eba32b689b955666ac2b7cb7f28eb71

SHA256
dc2e73a62f8b7544a3c9597784c56e59f9e6f3ec15842b2be8b45ede3634cf94

SHA512
28f630d95b47940f1a9259191931ee6c2548fdbe34af5064626f55f1c798b5c0cd91a5d46440298b95e57b7b532696b48b8bb5605fd3e80db6073a217424be49

Download Submit
C:\Users\Admin\AppData\Roaming\SubDir\Client.exe
Filesize
3.1MB

MD5
05a5ad59a263d577fbf7824da19f52c0

SHA1
f1e59d269eba32b689b955666ac2b7cb7f28eb71

SHA256
dc2e73a62f8b7544a3c9597784c56e59f9e6f3ec15842b2be8b45ede3634cf94

SHA512
28f630d95b47940f1a9259191931ee6c2548fdbe34af5064626f55f1c798b5c0cd91a5d46440298b95e57b7b532696b48b8bb5605fd3e80db6073a217424be49

Download Submit
memory/4440-133-0x0000000000700000-0x0000000000A24000-memory.dmp

Filesize
3.1MB

Download
memory/4440-134-0x00007FF940A10000-0x00007FF9414D1000-memory.dmp

Filesize
10.8MB

Download
memory/4440-135-0x000000001B820000-0x000000001B830000-memory.dmp

Filesize
64KB

Download
memory/4440-142-0x00007FF940A10000-0x00007FF9414D1000-memory.dmp

Filesize
10.8MB

Download
memory/4568-141-0x00007FF940A10000-0x00007FF9414D1000-memory.dmp

Filesize
10.8MB

Download
memory/4568-143-0x000000001BD60000-0x000000001BD70000-memory.dmp

Filesize
64KB

Download
memory/4568-144-0x000000001BCE0000-0x000000001BD30000-memory.dmp

Filesize
320KB

Download
memory/4568-145-0x000000001C3A0000-0x000000001C452000-memory.dmp

Filesize
712KB

Download
memory/4568-146-0x00007FF940A10000-0x00007FF9414D1000-memory.dmp

Filesize
10.8MB

Download
memory/4568-147-0x000000001BD60000-0x000000001BD70000-memory.dmp

Filesize
64KB

Download