quasar | cc68b1903e22d22e6f0a29bcdf46825d5c57747d8eb3a75672a4d6930f60fe77

General

Target

cc68b1903e22d22e6f0a29bcdf46825d5c57747d8eb3a75672a4d6930f60fe77.exe
Size

3.1MB
MD5

4489c3282400ad9e96ea5ca7c28e6369
SHA1

91a2016778cce0e880636d236efca38cf0a7713d
SHA256

cc68b1903e22d22e6f0a29bcdf46825d5c57747d8eb3a75672a4d6930f60fe77
SHA512

adaeab8aa666057ff008e86f96ae6b9a36ff2f276fdd49f6663c300357f3dc10f59fac7700bb385aa35887918a830e18bddaa41b3305d913566f58aa428a72b0
SSDEEP

49152:fvmI22SsaNYfdPBldt698dBcjH+ixNESEtk/i/LoGdCUTHHB72eh2NT:fvr22SsaNYfdPBldt6+dBcjHTx0D

Score

10^/10

quasar office04 spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

C2

testinghigger-42471.portmap.host:42471

Mutex

7a5f2afa-38ce-4bed-8e42-d1108199a2b3

Attributes

encryption_key
0F8B61E5223AD57FA54A04631691138A0F76FAE4
install_name
Client.exe
log_directory
Logs
reconnect_delay
3000
startup_key
wod2
subdirectory
SubDir

Signatures

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

Quasar payload 2 IoCs

resource	yara_rule
behavioral2/memory/4692-1-0x00000000005B0000-0x00000000008D4000-memory.dmp	family_quasar
behavioral2/files/0x0007000000023ca6-8.dat	family_quasar

Executes dropped EXE 1 IoCs

pid	Process
4380	Client.exe

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

System Information Discovery
T1082

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
4204	schtasks.exe
2468	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4692	cc68b1903e22d22e6f0a29bcdf46825d5c57747d8eb3a75672a4d6930f60fe77.exe
Token: SeDebugPrivilege	4380	Client.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
4380	Client.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
4380	Client.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4380	Client.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4692 wrote to memory of 4204	4692	cc68b1903e22d22e6f0a29bcdf46825d5c57747d8eb3a75672a4d6930f60fe77.exe	82
PID 4692 wrote to memory of 4204	4692	cc68b1903e22d22e6f0a29bcdf46825d5c57747d8eb3a75672a4d6930f60fe77.exe	82
PID 4692 wrote to memory of 4380	4692	cc68b1903e22d22e6f0a29bcdf46825d5c57747d8eb3a75672a4d6930f60fe77.exe	84
PID 4692 wrote to memory of 4380	4692	cc68b1903e22d22e6f0a29bcdf46825d5c57747d8eb3a75672a4d6930f60fe77.exe	84
PID 4380 wrote to memory of 2468	4380	Client.exe	85
PID 4380 wrote to memory of 2468	4380	Client.exe	85

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\cc68b1903e22d22e6f0a29bcdf46825d5c57747d8eb3a75672a4d6930f60fe77.exe
"C:\Users\Admin\AppData\Local\Temp\cc68b1903e22d22e6f0a29bcdf46825d5c57747d8eb3a75672a4d6930f60fe77.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4692
- C:\Windows\SYSTEM32\schtasks.exe
  "schtasks" /create /tn "wod2" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:4204
- 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
  - Suspicious use of WriteProcessMemory
  PID:4380
- - C:\Windows\SYSTEM32\schtasks.exe
    "schtasks" /create /tn "wod2" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:2468

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

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
3.1MB

MD5
4489c3282400ad9e96ea5ca7c28e6369

SHA1
91a2016778cce0e880636d236efca38cf0a7713d

SHA256
cc68b1903e22d22e6f0a29bcdf46825d5c57747d8eb3a75672a4d6930f60fe77

SHA512
adaeab8aa666057ff008e86f96ae6b9a36ff2f276fdd49f6663c300357f3dc10f59fac7700bb385aa35887918a830e18bddaa41b3305d913566f58aa428a72b0

Download Submit
memory/4380-10-0x00007FFFAEA10000-0x00007FFFAF4D1000-memory.dmp

Filesize
10.8MB

Download
memory/4380-11-0x00007FFFAEA10000-0x00007FFFAF4D1000-memory.dmp

Filesize
10.8MB

Download
memory/4380-12-0x000000001D8D0000-0x000000001D920000-memory.dmp

Filesize
320KB

Download
memory/4380-13-0x000000001D9E0000-0x000000001DA92000-memory.dmp

Filesize
712KB

Download
memory/4380-14-0x00007FFFAEA10000-0x00007FFFAF4D1000-memory.dmp

Filesize
10.8MB

Download
memory/4692-0-0x00007FFFAEA13000-0x00007FFFAEA15000-memory.dmp

Filesize
8KB

Download
memory/4692-1-0x00000000005B0000-0x00000000008D4000-memory.dmp

Filesize
3.1MB

Download
memory/4692-2-0x00007FFFAEA10000-0x00007FFFAF4D1000-memory.dmp

Filesize
10.8MB

Download
memory/4692-9-0x00007FFFAEA10000-0x00007FFFAF4D1000-memory.dmp

Filesize
10.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads