quasar | 3b541b5dfba231ccc9a971f24469b8764360061643ac7510481ff9fea2b2f751

General

Target

Fifa17InstallerComplement.exe
Size

3.1MB
MD5

cc698361e8911889d46280f7f467cbe7
SHA1

125dd983ba5ef4b661ec6348d0fb746f6543bde9
SHA256

3b541b5dfba231ccc9a971f24469b8764360061643ac7510481ff9fea2b2f751
SHA512

3b3fdc15fcf8912da8a3b0512b20ec618108fd5208fe9de333f9c2dee54a4ee14ac19bfbe8ca68309872ec86ae7515c8d8f0dd7f6a56e8e8f0a72656b228d8bc
SSDEEP

49152:mvSI22SsaNYfdPBldt698dBcjH38d4jhrLoGdZaTHHB72eh2NT:mv/22SsaNYfdPBldt6+dBcjH38de

Score

10^/10

quasar office04 spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

C2

azxq0ap.localto.net:3425

Mutex

e51e2b65-e963-4051-9736-67d57ed46798

Attributes

encryption_key
AEA258EF65BF1786F0F767C0BE2497ECC304C46F
install_name
WindowsUpdate.exe
log_directory
Logs
reconnect_delay
3000
startup_key
WindowsUpdate
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/2184-1-0x0000000001190000-0x00000000014B6000-memory.dmp	family_quasar
behavioral1/files/0x0009000000016ca5-6.dat	family_quasar
behavioral1/memory/3068-8-0x00000000010F0000-0x0000000001416000-memory.dmp	family_quasar

Executes dropped EXE 1 IoCs

pid	Process
3068	WindowsUpdate.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
2740	schtasks.exe
2528	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2184	Fifa17InstallerComplement.exe
Token: SeDebugPrivilege	3068	WindowsUpdate.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3068	WindowsUpdate.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 2184 wrote to memory of 2528	2184	Fifa17InstallerComplement.exe	30
PID 2184 wrote to memory of 2528	2184	Fifa17InstallerComplement.exe	30
PID 2184 wrote to memory of 2528	2184	Fifa17InstallerComplement.exe	30
PID 2184 wrote to memory of 3068	2184	Fifa17InstallerComplement.exe	32
PID 2184 wrote to memory of 3068	2184	Fifa17InstallerComplement.exe	32
PID 2184 wrote to memory of 3068	2184	Fifa17InstallerComplement.exe	32
PID 3068 wrote to memory of 2740	3068	WindowsUpdate.exe	33
PID 3068 wrote to memory of 2740	3068	WindowsUpdate.exe	33
PID 3068 wrote to memory of 2740	3068	WindowsUpdate.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\Fifa17InstallerComplement.exe
"C:\Users\Admin\AppData\Local\Temp\Fifa17InstallerComplement.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2184
- C:\Windows\system32\schtasks.exe
  "schtasks" /create /tn "WindowsUpdate" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\WindowsUpdate.exe" /rl HIGHEST /f
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:2528
- C:\Users\Admin\AppData\Roaming\SubDir\WindowsUpdate.exe
  "C:\Users\Admin\AppData\Roaming\SubDir\WindowsUpdate.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3068
- - C:\Windows\system32\schtasks.exe
    "schtasks" /create /tn "WindowsUpdate" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\WindowsUpdate.exe" /rl HIGHEST /f
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:2740

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\SubDir\WindowsUpdate.exe

Filesize
3.1MB

MD5
cc698361e8911889d46280f7f467cbe7

SHA1
125dd983ba5ef4b661ec6348d0fb746f6543bde9

SHA256
3b541b5dfba231ccc9a971f24469b8764360061643ac7510481ff9fea2b2f751

SHA512
3b3fdc15fcf8912da8a3b0512b20ec618108fd5208fe9de333f9c2dee54a4ee14ac19bfbe8ca68309872ec86ae7515c8d8f0dd7f6a56e8e8f0a72656b228d8bc

Download Submit
memory/2184-0-0x000007FEF5163000-0x000007FEF5164000-memory.dmp

Filesize
4KB

Download
memory/2184-1-0x0000000001190000-0x00000000014B6000-memory.dmp

Filesize
3.1MB

Download
memory/2184-2-0x000007FEF5160000-0x000007FEF5B4C000-memory.dmp

Filesize
9.9MB

Download
memory/2184-9-0x000007FEF5160000-0x000007FEF5B4C000-memory.dmp

Filesize
9.9MB

Download
memory/3068-8-0x00000000010F0000-0x0000000001416000-memory.dmp

Filesize
3.1MB

Download
memory/3068-10-0x000007FEF5160000-0x000007FEF5B4C000-memory.dmp

Filesize
9.9MB

Download
memory/3068-11-0x000007FEF5160000-0x000007FEF5B4C000-memory.dmp

Filesize
9.9MB

Download
memory/3068-12-0x000007FEF5160000-0x000007FEF5B4C000-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