Malware Analysis Report

2025-01-18 04:26

Sample ID 231214-j5kh6scder
Target f0207a4a17b47cba7d87142363b12477.exe
SHA256 d2835aa9243d529d8d44846d383f97f1bb7b976bc4c378d29d2387d1ba6c1d09
Tags
quasar office04 spyware trojan
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

d2835aa9243d529d8d44846d383f97f1bb7b976bc4c378d29d2387d1ba6c1d09

Threat Level: Known bad

The file f0207a4a17b47cba7d87142363b12477.exe was found to be: Known bad.

Malicious Activity Summary

quasar office04 spyware trojan

Quasar payload

Quasar family

Quasar RAT

Executes dropped EXE

Unsigned PE

Suspicious use of AdjustPrivilegeToken

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

MITRE ATT&CK

N/A

Analysis: static1

Detonation Overview

Reported

2023-12-14 08:15

Signatures

Quasar family

quasar

Quasar payload

Description Indicator Process Target
N/A N/A N/A N/A

Unsigned PE

Description Indicator Process Target
N/A N/A N/A N/A

Analysis: behavioral2

Detonation Overview

Submitted

2023-12-14 08:15

Reported

2023-12-14 08:17

Platform

win10v2004-20231127-en

Max time kernel

150s

Max time network

142s

Command Line

"C:\Users\Admin\AppData\Local\Temp\f0207a4a17b47cba7d87142363b12477.exe"

Signatures

Quasar RAT

trojan spyware quasar

Quasar payload

Description Indicator Process Target
N/A N/A N/A N/A
N/A N/A N/A N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Roaming\SubDir\Synecs.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\f0207a4a17b47cba7d87142363b12477.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Roaming\SubDir\Synecs.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Roaming\SubDir\Synecs.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\f0207a4a17b47cba7d87142363b12477.exe

"C:\Users\Admin\AppData\Local\Temp\f0207a4a17b47cba7d87142363b12477.exe"

C:\Users\Admin\AppData\Roaming\SubDir\Synecs.exe

"C:\Users\Admin\AppData\Roaming\SubDir\Synecs.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 85.177.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 9.228.82.20.in-addr.arpa udp
US 8.8.8.8:53 2.136.104.51.in-addr.arpa udp
US 8.8.8.8:53 41.110.16.96.in-addr.arpa udp
US 8.8.8.8:53 241.154.82.20.in-addr.arpa udp
US 8.8.8.8:53 158.240.127.40.in-addr.arpa udp
N/A 127.0.0.1:4782 tcp
US 8.8.8.8:53 g.bing.com udp
US 204.79.197.200:443 g.bing.com tcp
US 8.8.8.8:53 200.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 205.47.74.20.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
N/A 127.0.0.1:4782 tcp
US 8.8.8.8:53 146.78.124.51.in-addr.arpa udp
N/A 127.0.0.1:4782 tcp
N/A 127.0.0.1:4782 tcp
US 8.8.8.8:53 157.123.68.40.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 217.135.221.88.in-addr.arpa udp
N/A 127.0.0.1:4782 tcp
N/A 127.0.0.1:4782 tcp
N/A 127.0.0.1:4782 tcp
US 8.8.8.8:53 26.35.223.20.in-addr.arpa udp
N/A 127.0.0.1:4782 tcp
N/A 127.0.0.1:4782 tcp
N/A 127.0.0.1:4782 tcp
US 8.8.8.8:53 209.178.17.96.in-addr.arpa udp
N/A 127.0.0.1:4782 tcp
N/A 127.0.0.1:4782 tcp
N/A 127.0.0.1:4782 tcp
US 8.8.8.8:53 43.229.111.52.in-addr.arpa udp
N/A 127.0.0.1:4782 tcp
N/A 127.0.0.1:4782 tcp
N/A 127.0.0.1:4782 tcp
N/A 127.0.0.1:4782 tcp
N/A 127.0.0.1:4782 tcp
N/A 127.0.0.1:4782 tcp
N/A 127.0.0.1:4782 tcp
N/A 127.0.0.1:4782 tcp
N/A 127.0.0.1:4782 tcp
N/A 127.0.0.1:4782 tcp
US 8.8.8.8:53 5.173.189.20.in-addr.arpa udp
N/A 127.0.0.1:4782 tcp
N/A 127.0.0.1:4782 tcp
N/A 127.0.0.1:4782 tcp

Files

memory/4908-0-0x00000000009E0000-0x0000000000D06000-memory.dmp

memory/4908-1-0x00007FFCCD0C0000-0x00007FFCCDB81000-memory.dmp

memory/4908-2-0x000000001B940000-0x000000001B950000-memory.dmp

C:\Users\Admin\AppData\Roaming\SubDir\Synecs.exe

MD5 f0207a4a17b47cba7d87142363b12477
SHA1 c2203e69e92e6ba6394e6f711429fadf8b65845e
SHA256 d2835aa9243d529d8d44846d383f97f1bb7b976bc4c378d29d2387d1ba6c1d09
SHA512 35f37bb38a070220dbe9f6511ab5bf8bca07fae46b5edefa5356a9294fc98b97735719410887b40776a7232711620f5c92f6bb45a7a54d597faef675196da810

memory/2752-8-0x00007FFCCD0C0000-0x00007FFCCDB81000-memory.dmp

memory/4908-9-0x00007FFCCD0C0000-0x00007FFCCDB81000-memory.dmp

memory/2752-10-0x000000001B1D0000-0x000000001B1E0000-memory.dmp

memory/2752-11-0x000000001BAD0000-0x000000001BB20000-memory.dmp

memory/2752-12-0x000000001BBE0000-0x000000001BC92000-memory.dmp

memory/2752-13-0x00007FFCCD0C0000-0x00007FFCCDB81000-memory.dmp

memory/2752-14-0x000000001B1D0000-0x000000001B1E0000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2023-12-14 08:15

Reported

2023-12-14 08:17

Platform

win7-20231023-en

Max time kernel

147s

Max time network

123s

Command Line

"C:\Users\Admin\AppData\Local\Temp\f0207a4a17b47cba7d87142363b12477.exe"

Signatures

Quasar RAT

trojan spyware quasar

Quasar payload

Description Indicator Process Target
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Roaming\SubDir\Synecs.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\f0207a4a17b47cba7d87142363b12477.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Roaming\SubDir\Synecs.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Roaming\SubDir\Synecs.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\f0207a4a17b47cba7d87142363b12477.exe

"C:\Users\Admin\AppData\Local\Temp\f0207a4a17b47cba7d87142363b12477.exe"

C:\Users\Admin\AppData\Roaming\SubDir\Synecs.exe

"C:\Users\Admin\AppData\Roaming\SubDir\Synecs.exe"

Network

Country Destination Domain Proto
N/A 127.0.0.1:4782 tcp
N/A 127.0.0.1:4782 tcp
N/A 127.0.0.1:4782 tcp
N/A 127.0.0.1:4782 tcp
N/A 127.0.0.1:4782 tcp
N/A 127.0.0.1:4782 tcp
N/A 127.0.0.1:4782 tcp
N/A 127.0.0.1:4782 tcp
N/A 127.0.0.1:4782 tcp
N/A 127.0.0.1:4782 tcp
N/A 127.0.0.1:4782 tcp
N/A 127.0.0.1:4782 tcp
N/A 127.0.0.1:4782 tcp
N/A 127.0.0.1:4782 tcp
N/A 127.0.0.1:4782 tcp
N/A 127.0.0.1:4782 tcp
N/A 127.0.0.1:4782 tcp
N/A 127.0.0.1:4782 tcp
N/A 127.0.0.1:4782 tcp
N/A 127.0.0.1:4782 tcp
N/A 127.0.0.1:4782 tcp
N/A 127.0.0.1:4782 tcp
N/A 127.0.0.1:4782 tcp
N/A 127.0.0.1:4782 tcp
N/A 127.0.0.1:4782 tcp
N/A 127.0.0.1:4782 tcp
N/A 127.0.0.1:4782 tcp
N/A 127.0.0.1:4782 tcp
N/A 127.0.0.1:4782 tcp
N/A 127.0.0.1:4782 tcp
N/A 127.0.0.1:4782 tcp
N/A 127.0.0.1:4782 tcp

Files

memory/2852-0-0x00000000011B0000-0x00000000014D6000-memory.dmp

memory/2852-1-0x000007FEF5E90000-0x000007FEF687C000-memory.dmp

memory/2852-2-0x000000001B550000-0x000000001B5D0000-memory.dmp

C:\Users\Admin\AppData\Roaming\SubDir\Synecs.exe

MD5 429de06914d1e1a5cf09dd755484477b
SHA1 145a12277186734a6ef5c797be7b8c8a88e39741
SHA256 38a5b3dd3704940537ab05d6e620a4b3c043552810cfc396b918da9915b77152
SHA512 8ef1808c5aa2846ca9b98ec8876d23d8000b578e57a9e5b2a6e1364a5636d18ee1968a0a2f672b69ff7c8a8704498dbc9db7c3d1c575594cddafe48b9f8aed6a

C:\Users\Admin\AppData\Roaming\SubDir\Synecs.exe

MD5 df53c8bb353c99a68b7a08e825eb9f69
SHA1 ca55da52c540241dfa36a8a916323374f3c4a0ce
SHA256 c6fa1f2359fe0441ca266220d4e0696e0e713c5bde4dc40e3e5ab7c4bca16515
SHA512 fd80f62c5b309252f6678c003dbb38943baed7efaf2da7a36e081c13023eb3785daa6a89941bd4021937126390a715a5be705ad47513d3a8b87f203d97b97ed0

memory/2904-7-0x0000000000DA0000-0x00000000010C6000-memory.dmp

memory/2852-9-0x000007FEF5E90000-0x000007FEF687C000-memory.dmp

memory/2904-8-0x000007FEF5E90000-0x000007FEF687C000-memory.dmp

memory/2904-10-0x000007FEF5E90000-0x000007FEF687C000-memory.dmp

memory/2904-11-0x000000001B150000-0x000000001B1D0000-memory.dmp