quasar | 310aa0b2e7d5cda89657fea41c2a840f0a2344b5d42a7461f36e76dbb1ddb75d

General

Target

310aa0b2e7d5cda89657fea41c2a840f0a2344b5d42a7461f36e76dbb1ddb75d.exe
Size

3.1MB
MD5

0369e1ea77e6b56db5cf74aaa45db136
SHA1

c0e2a36b33159e479b5e63e02aee9b5709d4237d
SHA256

310aa0b2e7d5cda89657fea41c2a840f0a2344b5d42a7461f36e76dbb1ddb75d
SHA512

0143137573bcc0c3ac8bcd3877bcb61cbb51b484a3be06ae5361e4940048e99f5f9e416b6e0bff93cc78764d1f0ae1091781d49c294e41a0a2f926aad6f3bf7e
SSDEEP

49152:Ovtt62XlaSFNWPjljiFa2RoUYIcmRJ6DbR3LoGd8DTHHB72eh2NTR:OvP62XlaSFNWPjljiFXRoUYIcmRJ61r

Score

10^/10

quasar office06 spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office06

C2

154.216.19.77:7000

Mutex

1e8aec43-b30a-4c63-9211-c18c9decd0e0

Attributes

encryption_key
2A64449428B4580ED5FC6EE66024E26C725626BE
install_name
s.exe
log_directory
Logs
reconnect_delay
3000
startup_key
ssssss
subdirectory
dir

Signatures

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

Quasar payload 3 IoCs

resource	yara_rule
behavioral1/memory/2396-1-0x0000000000C60000-0x0000000000F84000-memory.dmp	family_quasar
behavioral1/files/0x00070000000186f1-5.dat	family_quasar
behavioral1/memory/1640-7-0x0000000000AE0000-0x0000000000E04000-memory.dmp	family_quasar

Executes dropped EXE 1 IoCs

pid	Process
1640	s.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
3064	schtasks.exe
2580	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2396	310aa0b2e7d5cda89657fea41c2a840f0a2344b5d42a7461f36e76dbb1ddb75d.exe
Token: SeDebugPrivilege	1640	s.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1640	s.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 2396 wrote to memory of 2580	2396	310aa0b2e7d5cda89657fea41c2a840f0a2344b5d42a7461f36e76dbb1ddb75d.exe	30
PID 2396 wrote to memory of 2580	2396	310aa0b2e7d5cda89657fea41c2a840f0a2344b5d42a7461f36e76dbb1ddb75d.exe	30
PID 2396 wrote to memory of 2580	2396	310aa0b2e7d5cda89657fea41c2a840f0a2344b5d42a7461f36e76dbb1ddb75d.exe	30
PID 2396 wrote to memory of 1640	2396	310aa0b2e7d5cda89657fea41c2a840f0a2344b5d42a7461f36e76dbb1ddb75d.exe	32
PID 2396 wrote to memory of 1640	2396	310aa0b2e7d5cda89657fea41c2a840f0a2344b5d42a7461f36e76dbb1ddb75d.exe	32
PID 2396 wrote to memory of 1640	2396	310aa0b2e7d5cda89657fea41c2a840f0a2344b5d42a7461f36e76dbb1ddb75d.exe	32
PID 1640 wrote to memory of 3064	1640	s.exe	33
PID 1640 wrote to memory of 3064	1640	s.exe	33
PID 1640 wrote to memory of 3064	1640	s.exe	33

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\310aa0b2e7d5cda89657fea41c2a840f0a2344b5d42a7461f36e76dbb1ddb75d.exe
"C:\Users\Admin\AppData\Local\Temp\310aa0b2e7d5cda89657fea41c2a840f0a2344b5d42a7461f36e76dbb1ddb75d.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2396
- C:\Windows\system32\schtasks.exe
  "schtasks" /create /tn "ssssss" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\dir\s.exe" /rl HIGHEST /f
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:2580
- C:\Users\Admin\AppData\Roaming\dir\s.exe
  "C:\Users\Admin\AppData\Roaming\dir\s.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1640
- - C:\Windows\system32\schtasks.exe
    "schtasks" /create /tn "ssssss" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\dir\s.exe" /rl HIGHEST /f
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:3064

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\dir\s.exe

Filesize
3.1MB

MD5
0369e1ea77e6b56db5cf74aaa45db136

SHA1
c0e2a36b33159e479b5e63e02aee9b5709d4237d

SHA256
310aa0b2e7d5cda89657fea41c2a840f0a2344b5d42a7461f36e76dbb1ddb75d

SHA512
0143137573bcc0c3ac8bcd3877bcb61cbb51b484a3be06ae5361e4940048e99f5f9e416b6e0bff93cc78764d1f0ae1091781d49c294e41a0a2f926aad6f3bf7e

Download Submit
memory/1640-7-0x0000000000AE0000-0x0000000000E04000-memory.dmp

Filesize
3.1MB

Download
memory/1640-10-0x000007FEF5E70000-0x000007FEF685C000-memory.dmp

Filesize
9.9MB

Download
memory/1640-9-0x000007FEF5E70000-0x000007FEF685C000-memory.dmp

Filesize
9.9MB

Download
memory/1640-11-0x000007FEF5E70000-0x000007FEF685C000-memory.dmp

Filesize
9.9MB

Download
memory/1640-12-0x000007FEF5E70000-0x000007FEF685C000-memory.dmp

Filesize
9.9MB

Download
memory/2396-0-0x000007FEF5E73000-0x000007FEF5E74000-memory.dmp

Filesize
4KB

Download
memory/2396-1-0x0000000000C60000-0x0000000000F84000-memory.dmp

Filesize
3.1MB

Download
memory/2396-2-0x000007FEF5E70000-0x000007FEF685C000-memory.dmp

Filesize
9.9MB

Download
memory/2396-8-0x000007FEF5E70000-0x000007FEF685C000-memory.dmp

Filesize
9.9MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads