quasar | 78c3578aa894e56a27efeaa4daa26b2effd9e90a3ffaa32abea06f78e19ba735

Resubmissions

26-01-2025 17:48

250126-wdl9xayjfw 10

26-01-2025 17:45

250126-wbvs9syjax 10

Analysis

max time kernel
250s
max time network
204s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
26-01-2025 17:48

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General

Target

eclipse executor/eclipse executor.exe
Size

3.1MB
MD5

1512ffa41753d2f49de5b5296f5c174e
SHA1

596412e03c09c60c822f6e0d12072e4cb861fa72
SHA256

1df2e7dd996b5cfc2aea6b38548ef0375664ef618743bbcb623df319f9e48f3e
SHA512

b07550d650a0960b0ffda941e0a71c4ce4630964cd74c58e2ae21225cceb1666c6d1de234a0f1802578f4a9afeca653cd1f295bd4d5a97d4afbd1ff0f5f582f5
SSDEEP

49152:rv3I22SsaNYfdPBldt698dBcjHaFenk3xg2oGdaBTHHB72eh2NT:rv422SsaNYfdPBldt6+dBcjHasno

Score

10^/10

quasar made spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

made

2001:569:7e70:6a00:c8f3:749c:278f:2c17:4782

Mutex

9d96368e-1352-46e3-8281-8f5eaf945edb

Attributes

encryption_key
AF603C3CFA231D1BD841E315C27377C7E4A49333
install_name
client.exe
log_directory
Logs
reconnect_delay
3000
startup_key
Java startup
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/4792-1-0x00000000005C0000-0x00000000008E4000-memory.dmp	family_quasar
behavioral2/files/0x0007000000023c9c-4.dat	family_quasar

Executes dropped EXE 1 IoCs

pid	Process
4644	client.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
3404	schtasks.exe
3080	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4792	eclipse executor.exe
Token: SeDebugPrivilege	4644	client.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4644	client.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4792 wrote to memory of 3404	4792	eclipse executor.exe	82
PID 4792 wrote to memory of 3404	4792	eclipse executor.exe	82
PID 4792 wrote to memory of 4644	4792	eclipse executor.exe	84
PID 4792 wrote to memory of 4644	4792	eclipse executor.exe	84
PID 4644 wrote to memory of 3080	4644	client.exe	85
PID 4644 wrote to memory of 3080	4644	client.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\eclipse executor\eclipse executor.exe
"C:\Users\Admin\AppData\Local\Temp\eclipse executor\eclipse executor.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4792
- C:\Windows\SYSTEM32\schtasks.exe
  "schtasks" /create /tn "Java startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\client.exe" /rl HIGHEST /f
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:3404
- 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
  - Suspicious use of WriteProcessMemory
  PID:4644
- - C:\Windows\SYSTEM32\schtasks.exe
    "schtasks" /create /tn "Java startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\client.exe" /rl HIGHEST /f
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:3080

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:\Users\Admin\AppData\Roaming\SubDir\client.exe

Filesize
3.1MB

MD5
1512ffa41753d2f49de5b5296f5c174e

SHA1
596412e03c09c60c822f6e0d12072e4cb861fa72

SHA256
1df2e7dd996b5cfc2aea6b38548ef0375664ef618743bbcb623df319f9e48f3e

SHA512
b07550d650a0960b0ffda941e0a71c4ce4630964cd74c58e2ae21225cceb1666c6d1de234a0f1802578f4a9afeca653cd1f295bd4d5a97d4afbd1ff0f5f582f5

Download Submit
memory/4644-8-0x00007FF989860000-0x00007FF98A321000-memory.dmp

Filesize
10.8MB

Download
memory/4644-9-0x00007FF989860000-0x00007FF98A321000-memory.dmp

Filesize
10.8MB

Download
memory/4644-10-0x000000001DB20000-0x000000001DB70000-memory.dmp

Filesize
320KB

Download
memory/4644-11-0x000000001DC30000-0x000000001DCE2000-memory.dmp

Filesize
712KB

Download
memory/4644-13-0x00007FF989860000-0x00007FF98A321000-memory.dmp

Filesize
10.8MB

Download
memory/4792-0-0x00007FF989863000-0x00007FF989865000-memory.dmp

Filesize
8KB

Download
memory/4792-1-0x00000000005C0000-0x00000000008E4000-memory.dmp

Filesize
3.1MB

Download
memory/4792-2-0x00007FF989860000-0x00007FF98A321000-memory.dmp

Filesize
10.8MB

Download
memory/4792-12-0x00007FF989860000-0x00007FF98A321000-memory.dmp

Filesize
10.8MB

Download

Resubmissions

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads