quasar | 760900c54d8de9c15d683400c4c1969c386f22b2dbbecd4163b93dd0112af4a6

Analysis

max time kernel
126s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
13-12-2024 10:13

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General

Target

discord.exe
Size

3.1MB
MD5

46bb433e514cfe4b33341703a53f54cb
SHA1

54f697ea24a9da0dcd53fc6e3c5dfe5dc5a90170
SHA256

760900c54d8de9c15d683400c4c1969c386f22b2dbbecd4163b93dd0112af4a6
SHA512

30d07b31ab8697f4cab21f1adaa1e81a6cc93192fca844f3a7693befa4c6d385c248786091f7a579cf16b7faf316e29d14ebd7765697598f9ff1ef7fdcfb1267
SSDEEP

49152:bvXI22SsaNYfdPBldt698dBcjHIFRJ6bbR3LoGdPpTHHB72eh2NT:bvY22SsaNYfdPBldt6+dBcjHIFRJ6t

Score

10^/10

quasar main-pc spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

main-pc

192.168.100.2:4444

Mutex

979e9520-ec25-48f6-8cd4-516d1007358f

Attributes

encryption_key
6B74F0C858B7E90573D4E97997F2A082B9781250
install_name
main-pc.exe
log_directory
Logs
reconnect_delay
3000
startup_key
Microsoft Service
subdirectory
SubDir

Signatures

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

Quasar payload 2 IoCs

resource	yara_rule
behavioral2/memory/4216-1-0x0000000000740000-0x0000000000A64000-memory.dmp	family_quasar
behavioral2/files/0x0007000000023cc8-6.dat	family_quasar

Executes dropped EXE 1 IoCs

pid	Process
3928	main-pc.exe

Drops file in System32 directory 5 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system32\SubDir\main-pc.exe	discord.exe
File opened for modification	C:\Windows\system32\SubDir	discord.exe
File opened for modification	C:\Windows\system32\SubDir\main-pc.exe	main-pc.exe
File opened for modification	C:\Windows\system32\SubDir	main-pc.exe
File created	C:\Windows\system32\SubDir\main-pc.exe	discord.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
2984	schtasks.exe
2408	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4216	discord.exe
Token: SeDebugPrivilege	3928	main-pc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3928	main-pc.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4216 wrote to memory of 2984	4216	discord.exe	82
PID 4216 wrote to memory of 2984	4216	discord.exe	82
PID 4216 wrote to memory of 3928	4216	discord.exe	84
PID 4216 wrote to memory of 3928	4216	discord.exe	84
PID 3928 wrote to memory of 2408	3928	main-pc.exe	85
PID 3928 wrote to memory of 2408	3928	main-pc.exe	85

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Users\Admin\AppData\Local\Temp\discord.exe
"C:\Users\Admin\AppData\Local\Temp\discord.exe"
1⤵
- Drops file in System32 directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4216
- C:\Windows\SYSTEM32\schtasks.exe
  "schtasks" /create /tn "Microsoft Service" /sc ONLOGON /tr "C:\Windows\system32\SubDir\main-pc.exe" /rl HIGHEST /f
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:2984
- C:\Windows\system32\SubDir\main-pc.exe
  "C:\Windows\system32\SubDir\main-pc.exe"
  2⤵
  - Executes dropped EXE
  - Drops file in System32 directory
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3928
- - C:\Windows\SYSTEM32\schtasks.exe
    "schtasks" /create /tn "Microsoft Service" /sc ONLOGON /tr "C:\Windows\system32\SubDir\main-pc.exe" /rl HIGHEST /f
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:2408

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Windows\System32\SubDir\main-pc.exe

Filesize
3.1MB

MD5
46bb433e514cfe4b33341703a53f54cb

SHA1
54f697ea24a9da0dcd53fc6e3c5dfe5dc5a90170

SHA256
760900c54d8de9c15d683400c4c1969c386f22b2dbbecd4163b93dd0112af4a6

SHA512
30d07b31ab8697f4cab21f1adaa1e81a6cc93192fca844f3a7693befa4c6d385c248786091f7a579cf16b7faf316e29d14ebd7765697598f9ff1ef7fdcfb1267

Download Submit
memory/3928-10-0x00007FFC37520000-0x00007FFC37FE1000-memory.dmp

Filesize
10.8MB

Download
memory/3928-11-0x00007FFC37520000-0x00007FFC37FE1000-memory.dmp

Filesize
10.8MB

Download
memory/3928-12-0x0000000002B10000-0x0000000002B60000-memory.dmp

Filesize
320KB

Download
memory/3928-13-0x000000001D640000-0x000000001D6F2000-memory.dmp

Filesize
712KB

Download
memory/3928-14-0x00007FFC37520000-0x00007FFC37FE1000-memory.dmp

Filesize
10.8MB

Download
memory/4216-0-0x00007FFC37523000-0x00007FFC37525000-memory.dmp

Filesize
8KB

Download
memory/4216-1-0x0000000000740000-0x0000000000A64000-memory.dmp

Filesize
3.1MB

Download
memory/4216-2-0x00007FFC37520000-0x00007FFC37FE1000-memory.dmp

Filesize
10.8MB

Download
memory/4216-9-0x00007FFC37520000-0x00007FFC37FE1000-memory.dmp

Filesize
10.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads