quasar | b065237f7ad313c1457095763cc84b4148d09738701e8cfb1a9d0cebd0005587

Analysis

max time kernel
149s
max time network
159s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
18/11/2024, 01:01

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General

Target

ccb2c986ff616e7cef66ed4d54c5845c9af511bd3b796e1d7ca5d5a41b60367b.exe
Size

3.1MB
MD5

112052df0155dc61ccd59a085552acc2
SHA1

0da0103f733680888948585e1e1cbb50711c0a3f
SHA256

ccb2c986ff616e7cef66ed4d54c5845c9af511bd3b796e1d7ca5d5a41b60367b
SHA512

78f7bfc985fbae2f030ea1268d087b7b68e532bd3f44181fe0c28dd906ebbb858687209b60fbf7d1f8cdc84ee09374a9d55cfb0834ae9fd51e98b5effcb60645
SSDEEP

49152:zvkI22SsaNYfdPBldt698dBcjHetxNESEUk/iSboGdzTHHB72eh2NT:zvJ22SsaNYfdPBldt6+dBcjH4xjU

Score

10^/10

quasar office04 spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

154.83.15.5:4782

Mutex

f471b896-c945-43dc-9217-eb1657caa328

Attributes

encryption_key
2B2223EBAC01E73CC719C15E7C1A885C0BBF24EC
install_name
ww.exe
log_directory
Logs
reconnect_delay
3000
startup_key
Quasar Client Startup
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/2916-1-0x0000000000E80000-0x00000000011A4000-memory.dmp	family_quasar
behavioral1/files/0x0008000000018710-5.dat	family_quasar
behavioral1/memory/2416-8-0x0000000000DD0000-0x00000000010F4000-memory.dmp	family_quasar

Executes dropped EXE 1 IoCs

pid	Process
2416	ww.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2916	ccb2c986ff616e7cef66ed4d54c5845c9af511bd3b796e1d7ca5d5a41b60367b.exe
Token: SeDebugPrivilege	2416	ww.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2416	ww.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2916 wrote to memory of 2416	2916	ccb2c986ff616e7cef66ed4d54c5845c9af511bd3b796e1d7ca5d5a41b60367b.exe	30
PID 2916 wrote to memory of 2416	2916	ccb2c986ff616e7cef66ed4d54c5845c9af511bd3b796e1d7ca5d5a41b60367b.exe	30
PID 2916 wrote to memory of 2416	2916	ccb2c986ff616e7cef66ed4d54c5845c9af511bd3b796e1d7ca5d5a41b60367b.exe	30

C:\Users\Admin\AppData\Local\Temp\ccb2c986ff616e7cef66ed4d54c5845c9af511bd3b796e1d7ca5d5a41b60367b.exe
"C:\Users\Admin\AppData\Local\Temp\ccb2c986ff616e7cef66ed4d54c5845c9af511bd3b796e1d7ca5d5a41b60367b.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2916
- C:\Users\Admin\AppData\Roaming\SubDir\ww.exe
  "C:\Users\Admin\AppData\Roaming\SubDir\ww.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:2416

Network

MITRE ATT&CK Matrix

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Downloads

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

Filesize
3.1MB

MD5
112052df0155dc61ccd59a085552acc2

SHA1
0da0103f733680888948585e1e1cbb50711c0a3f

SHA256
ccb2c986ff616e7cef66ed4d54c5845c9af511bd3b796e1d7ca5d5a41b60367b

SHA512
78f7bfc985fbae2f030ea1268d087b7b68e532bd3f44181fe0c28dd906ebbb858687209b60fbf7d1f8cdc84ee09374a9d55cfb0834ae9fd51e98b5effcb60645

Download Submit
memory/2416-7-0x000007FEF67C0000-0x000007FEF71AC000-memory.dmp

Filesize
9.9MB

Download
memory/2416-8-0x0000000000DD0000-0x00000000010F4000-memory.dmp

Filesize
3.1MB

Download
memory/2416-10-0x000007FEF67C0000-0x000007FEF71AC000-memory.dmp

Filesize
9.9MB

Download
memory/2416-11-0x000007FEF67C0000-0x000007FEF71AC000-memory.dmp

Filesize
9.9MB

Download
memory/2916-0-0x000007FEF67C3000-0x000007FEF67C4000-memory.dmp

Filesize
4KB

Download
memory/2916-1-0x0000000000E80000-0x00000000011A4000-memory.dmp

Filesize
3.1MB

Download
memory/2916-2-0x000007FEF67C0000-0x000007FEF71AC000-memory.dmp

Filesize
9.9MB

Download
memory/2916-9-0x000007FEF67C0000-0x000007FEF71AC000-memory.dmp

Filesize
9.9MB

Download