quasar | 96eb67eaf4d600885d149701f7b720f004a1646775a179e77e8706762405e921

General

Target

python-3.12.3-amd64_protected.exe
Size

8.6MB
MD5

328626049b23e7d5fbe12f9503853d53
SHA1

402ca69107944196f421a16ce3be363a0f4e991c
SHA256

96eb67eaf4d600885d149701f7b720f004a1646775a179e77e8706762405e921
SHA512

5425ef358018a66977e711bfa2a794c725bd153df5989cae52419115c981ce94cc15b6ae826c42d786aa3363151d9c051ae53407ab5e07fcc7365ef054b03c91
SSDEEP

196608:VGjSZs4BJq1Ey1FJrMwM/RAWOY+3uWjNyWte7c:VXZsI0F5MYYjWjM7c

Score

10^/10

quasar python evasion spyware themida trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Python

C2

5.39.43.50:1488

Mutex

393fbc9d-531f-4025-b3f0-bed4d56f6ed3

Attributes

encryption_key
1E01F0D74E189002EDB2FABC8EC064751C9D7A63
install_name
Python.exe
log_directory
Logs
reconnect_delay
3000
startup_key
Python3
subdirectory
Python3

Signatures

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

Quasar payload 5 IoCs

Processes:

resource	yara_rule
behavioral2/memory/3032-11-0x0000000000400000-0x0000000001A14000-memory.dmp	family_quasar
behavioral2/memory/3032-12-0x0000000000400000-0x0000000001A14000-memory.dmp	family_quasar
behavioral2/memory/3032-24-0x0000000000400000-0x0000000001A14000-memory.dmp	family_quasar
behavioral2/memory/1324-27-0x0000000000400000-0x0000000001A14000-memory.dmp	family_quasar
behavioral2/memory/1324-28-0x0000000000400000-0x0000000001A14000-memory.dmp	family_quasar

Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 2 IoCs

evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

Processes:

python-3.12.3-amd64_protected.exePython.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	python-3.12.3-amd64_protected.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	Python.exe

Checks BIOS information in registry 2 TTPs 4 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

python-3.12.3-amd64_protected.exePython.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	python-3.12.3-amd64_protected.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	python-3.12.3-amd64_protected.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	Python.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	Python.exe

Executes dropped EXE 1 IoCs

Processes:

Python.exe

pid process

1324 Python.exe

pid	process
1324	Python.exe

Themida packer 6 IoCs

Detects Themida, an advanced Windows software protection system.

themida

Processes:

resource	yara_rule
behavioral2/memory/3032-11-0x0000000000400000-0x0000000001A14000-memory.dmp	themida
behavioral2/memory/3032-12-0x0000000000400000-0x0000000001A14000-memory.dmp	themida
C:\Users\Admin\AppData\Roaming\Python3\Python.exe	themida
behavioral2/memory/3032-24-0x0000000000400000-0x0000000001A14000-memory.dmp	themida
behavioral2/memory/1324-27-0x0000000000400000-0x0000000001A14000-memory.dmp	themida
behavioral2/memory/1324-28-0x0000000000400000-0x0000000001A14000-memory.dmp	themida

Checks whether UAC is enabled 1 TTPs 2 IoCs

evasion trojan

System Information Discovery

T1082

Processes:

Python.exepython-3.12.3-amd64_protected.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	Python.exe
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	python-3.12.3-amd64_protected.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

Processes:

python-3.12.3-amd64_protected.exePython.exe

pid process

3032 python-3.12.3-amd64_protected.exe
1324 Python.exe
Creates scheduled task(s) 1 TTPs 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task/Job
T1053

Processes:

schtasks.exeschtasks.exe

pid process

1968 schtasks.exe
1836 schtasks.exe
Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

python-3.12.3-amd64_protected.exePython.exe

pid process

3032 python-3.12.3-amd64_protected.exe
3032 python-3.12.3-amd64_protected.exe
1324 Python.exe
1324 Python.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

python-3.12.3-amd64_protected.exePython.exe

description pid process

Token: SeDebugPrivilege 3032 python-3.12.3-amd64_protected.exe
Token: SeDebugPrivilege 1324 Python.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

Python.exe

pid process

1324 Python.exe

pid	process
3032	python-3.12.3-amd64_protected.exe
1324	Python.exe

pid	process
1968	schtasks.exe
1836	schtasks.exe

pid	process
3032	python-3.12.3-amd64_protected.exe
3032	python-3.12.3-amd64_protected.exe
1324	Python.exe
1324	Python.exe

description	pid	process
Token: SeDebugPrivilege	3032	python-3.12.3-amd64_protected.exe
Token: SeDebugPrivilege	1324	Python.exe

pid	process
1324	Python.exe

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

python-3.12.3-amd64_protected.exePython.exe

description	pid	process	target process
PID 3032 wrote to memory of 1968	3032	python-3.12.3-amd64_protected.exe	schtasks.exe
PID 3032 wrote to memory of 1968	3032	python-3.12.3-amd64_protected.exe	schtasks.exe
PID 3032 wrote to memory of 1968	3032	python-3.12.3-amd64_protected.exe	schtasks.exe
PID 3032 wrote to memory of 1324	3032	python-3.12.3-amd64_protected.exe	Python.exe
PID 3032 wrote to memory of 1324	3032	python-3.12.3-amd64_protected.exe	Python.exe
PID 3032 wrote to memory of 1324	3032	python-3.12.3-amd64_protected.exe	Python.exe
PID 1324 wrote to memory of 1836	1324	Python.exe	schtasks.exe
PID 1324 wrote to memory of 1836	1324	Python.exe	schtasks.exe
PID 1324 wrote to memory of 1836	1324	Python.exe	schtasks.exe

C:\Users\Admin\AppData\Local\Temp\python-3.12.3-amd64_protected.exe
"C:\Users\Admin\AppData\Local\Temp\python-3.12.3-amd64_protected.exe"
1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Checks whether UAC is enabled
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3032

C:\Windows\SysWOW64\schtasks.exe
"schtasks" /create /tn "Python3" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\Python3\Python.exe" /rl HIGHEST /f
2⤵
- Creates scheduled task(s)
PID:1968

C:\Users\Admin\AppData\Roaming\Python3\Python.exe
"C:\Users\Admin\AppData\Roaming\Python3\Python.exe"
2⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Executes dropped EXE
- Checks whether UAC is enabled
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1324

C:\Windows\SysWOW64\schtasks.exe
"schtasks" /create /tn "Python3" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\Python3\Python.exe" /rl HIGHEST /f
3⤵
- Creates scheduled task(s)
PID:1836

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Scheduled Task/Job

1

T1053

Persistence

Scheduled Task/Job

1

T1053

Privilege Escalation

Scheduled Task/Job

1

T1053

Defense Evasion

Virtualization/Sandbox Evasion

1

T1497

Credential Access

Discovery

Query Registry

2

T1012

Virtualization/Sandbox Evasion

1

T1497

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

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Downloads

C:\Users\Admin\AppData\Roaming\Python3\Python.exe
Filesize
8.6MB

MD5
328626049b23e7d5fbe12f9503853d53

SHA1
402ca69107944196f421a16ce3be363a0f4e991c

SHA256
96eb67eaf4d600885d149701f7b720f004a1646775a179e77e8706762405e921

SHA512
5425ef358018a66977e711bfa2a794c725bd153df5989cae52419115c981ce94cc15b6ae826c42d786aa3363151d9c051ae53407ab5e07fcc7365ef054b03c91

Download Submit
memory/1324-39-0x0000000000400000-0x0000000001A14000-memory.dmp

Filesize
22.1MB

Download
memory/1324-36-0x0000000008390000-0x00000000083F6000-memory.dmp

Filesize
408KB

Download
memory/1324-35-0x0000000008330000-0x000000000836C000-memory.dmp

Filesize
240KB

Download
memory/1324-34-0x0000000008310000-0x0000000008322000-memory.dmp

Filesize
72KB

Download
memory/1324-31-0x00000000077A0000-0x0000000007852000-memory.dmp

Filesize
712KB

Download
memory/1324-30-0x00000000075A0000-0x00000000075F0000-memory.dmp

Filesize
320KB

Download
memory/1324-29-0x0000000006E10000-0x0000000007428000-memory.dmp

Filesize
6.1MB

Download
memory/1324-28-0x0000000000400000-0x0000000001A14000-memory.dmp

Filesize
22.1MB

Download
memory/1324-27-0x0000000000400000-0x0000000001A14000-memory.dmp

Filesize
22.1MB

Download
memory/1324-23-0x0000000000400000-0x0000000001A14000-memory.dmp

Filesize
22.1MB

Download
memory/3032-7-0x00000000757C0000-0x00000000758B0000-memory.dmp

Filesize
960KB

Download
memory/3032-8-0x00000000757C0000-0x00000000758B0000-memory.dmp

Filesize
960KB

Download
memory/3032-14-0x0000000006680000-0x0000000006712000-memory.dmp

Filesize
584KB

Download
memory/3032-15-0x0000000006770000-0x000000000677A000-memory.dmp

Filesize
40KB

Download
memory/3032-12-0x0000000000400000-0x0000000001A14000-memory.dmp

Filesize
22.1MB

Download
memory/3032-22-0x00000000757C0000-0x00000000758B0000-memory.dmp

Filesize
960KB

Download
memory/3032-11-0x0000000000400000-0x0000000001A14000-memory.dmp

Filesize
22.1MB

Download
memory/3032-24-0x0000000000400000-0x0000000001A14000-memory.dmp

Filesize
22.1MB

Download
memory/3032-9-0x00000000757C0000-0x00000000758B0000-memory.dmp

Filesize
960KB

Download
memory/3032-13-0x0000000006070000-0x0000000006614000-memory.dmp

Filesize
5.6MB

Download
memory/3032-0-0x0000000000400000-0x0000000001A14000-memory.dmp

Filesize
22.1MB

Download
memory/3032-6-0x00000000757C0000-0x00000000758B0000-memory.dmp

Filesize
960KB

Download
memory/3032-5-0x00000000757C0000-0x00000000758B0000-memory.dmp

Filesize
960KB

Download
memory/3032-2-0x00000000757C0000-0x00000000758B0000-memory.dmp

Filesize
960KB

Download
memory/3032-1-0x00000000757E0000-0x00000000757E1000-memory.dmp

Filesize
4KB

Download
memory/3032-4-0x00000000757C0000-0x00000000758B0000-memory.dmp

Filesize
960KB

Download
memory/3032-3-0x00000000757C0000-0x00000000758B0000-memory.dmp

Filesize
960KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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