quasar | 70bceb4e3e62015b87de30e1063f0dd64c2d43255211845d64ef508d05e17ff2

Analysis

max time kernel
148s
max time network
155s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
04-02-2025 17:22

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General

Target

minico.exe
Size

3.1MB
MD5

3c967ba67c97bd75f817c034d7c5180a
SHA1

03e417a484aedcf7694ec1d25d2b8fb4d15236e3
SHA256

70bceb4e3e62015b87de30e1063f0dd64c2d43255211845d64ef508d05e17ff2
SHA512

0734747ec59585892f17a113e1a296d4a5635d4e12485fd76d42aa8aa1737f713ac78ace901b952c3aa8091cb1bcec316f1de39d43f0473d3135c6b9628700e7
SSDEEP

49152:zvHlL26AaNeWgPhlmVqvMQ7XSKApRJ6GbR3LoGd+THHB72eh2NT:zvFL26AaNeWgPhlmVqkQ7XSKApRJ6A

Score

10^/10

quasar office04 spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

vewifow477-24147.portmap.host:24147

Mutex

c774d406-1616-403d-b459-8701fe187966

Attributes

encryption_key
437867A53E12884A81A466934A01D12C44465D37
install_name
Client.exe
log_directory
Logs
reconnect_delay
3000
startup_key
DisplayResolutionRuntimes
subdirectory
SubDir

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/2268-1-0x00000000009D0000-0x0000000000CF4000-memory.dmp	family_quasar
behavioral1/files/0x00090000000164c8-5.dat	family_quasar
behavioral1/memory/2964-7-0x0000000000E50000-0x0000000001174000-memory.dmp	family_quasar

Executes dropped EXE 1 IoCs

pid	Process
2964	Client.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2268	minico.exe
Token: SeDebugPrivilege	2964	Client.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2964	Client.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
2964	Client.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2964	Client.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2268 wrote to memory of 2964	2268	minico.exe	30
PID 2268 wrote to memory of 2964	2268	minico.exe	30
PID 2268 wrote to memory of 2964	2268	minico.exe	30

C:\Users\Admin\AppData\Local\Temp\minico.exe
"C:\Users\Admin\AppData\Local\Temp\minico.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2268
- 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 FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  - Suspicious use of SetWindowsHookEx
  PID:2964

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
3.1MB

MD5
3c967ba67c97bd75f817c034d7c5180a

SHA1
03e417a484aedcf7694ec1d25d2b8fb4d15236e3

SHA256
70bceb4e3e62015b87de30e1063f0dd64c2d43255211845d64ef508d05e17ff2

SHA512
0734747ec59585892f17a113e1a296d4a5635d4e12485fd76d42aa8aa1737f713ac78ace901b952c3aa8091cb1bcec316f1de39d43f0473d3135c6b9628700e7

Download Submit
memory/2268-0-0x000007FEF5CD3000-0x000007FEF5CD4000-memory.dmp

Filesize
4KB

Download
memory/2268-1-0x00000000009D0000-0x0000000000CF4000-memory.dmp

Filesize
3.1MB

Download
memory/2268-2-0x000007FEF5CD0000-0x000007FEF66BC000-memory.dmp

Filesize
9.9MB

Download
memory/2268-10-0x000007FEF5CD0000-0x000007FEF66BC000-memory.dmp

Filesize
9.9MB

Download
memory/2964-7-0x0000000000E50000-0x0000000001174000-memory.dmp

Filesize
3.1MB

Download
memory/2964-8-0x000007FEF5CD0000-0x000007FEF66BC000-memory.dmp

Filesize
9.9MB

Download
memory/2964-9-0x000007FEF5CD0000-0x000007FEF66BC000-memory.dmp

Filesize
9.9MB

Download
memory/2964-11-0x000007FEF5CD0000-0x000007FEF66BC000-memory.dmp

Filesize
9.9MB

Download