quasar | daf48dfcff237bc1883b9b0005b0a3ea92880e0d561ad4127de2076542252aa5

Analysis

max time kernel
110s
max time network
136s
platform
windows10-2004_x64
resource
win10v2004-20250313-en
resource tags

arch:x64arch:x86image:win10v2004-20250313-enlocale:en-usos:windows10-2004-x64system
submitted
28/03/2025, 16:38

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General

Target

keysercheetos.exe
Size

3.1MB
MD5

b84554678c815444402cece204dff1cf
SHA1

d33aa8abde2e1d365db0dfdb3d0d2cdde1703b52
SHA256

0cca1529d1dc1550f12746113f6749ea5a943624b8e3f3e1116e53c65de9f6b5
SHA512

6cfd847c76c68dea1afbf61025594965f4a943547031ba3ff96d2698c5ba126fc47b103dbdc10b80b038cb6ad6dc8804c9dcb76977a52adb863080a6b0ce1a1b
SSDEEP

49152:QvVL82kyaNnwxPlllSWxc9LpQXz3spdpQLoGdiTHHB72eh2NT:Qvl82kyaNnwxPlllSWa9LpQXLsU

Score

10^/10

quasar daddyspooferv1.4 spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

daddyspooferv1.4

192.168.56.1:4782

192.168.56.1:4781

chris1212-43098.portmap.host:4782

chris1212-43098.portmap.host:43098

Mutex

66be076a-c9c1-4ea0-a5c1-d0257b4d87ee

Attributes

encryption_key
D0FBA107AD203B610615E444B23834F88CB58A1D
install_name
Client.exe
log_directory
Logs
reconnect_delay
3000
startup_key
Update
subdirectory
clienthost.exe

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/1560-1-0x0000000000210000-0x0000000000534000-memory.dmp	family_quasar
behavioral2/files/0x00070000000242a0-6.dat	family_quasar

Executes dropped EXE 1 IoCs

pid	Process
3212	Client.exe

Drops file in System32 directory 5 IoCs

description	ioc	Process
File created	C:\Windows\system32\clienthost.exe\Client.exe	keysercheetos.exe
File opened for modification	C:\Windows\system32\clienthost.exe\Client.exe	keysercheetos.exe
File opened for modification	C:\Windows\system32\clienthost.exe	keysercheetos.exe
File opened for modification	C:\Windows\system32\clienthost.exe\Client.exe	Client.exe
File opened for modification	C:\Windows\system32\clienthost.exe	Client.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
4172	schtasks.exe
3252	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1560	keysercheetos.exe
Token: SeDebugPrivilege	3212	Client.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3212	Client.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1560 wrote to memory of 4172	1560	keysercheetos.exe	88
PID 1560 wrote to memory of 4172	1560	keysercheetos.exe	88
PID 1560 wrote to memory of 3212	1560	keysercheetos.exe	91
PID 1560 wrote to memory of 3212	1560	keysercheetos.exe	91
PID 3212 wrote to memory of 3252	3212	Client.exe	95
PID 3212 wrote to memory of 3252	3212	Client.exe	95

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\keysercheetos.exe
"C:\Users\Admin\AppData\Local\Temp\keysercheetos.exe"
1⤵
- Drops file in System32 directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1560
- C:\Windows\SYSTEM32\schtasks.exe
  "schtasks" /create /tn "Update" /sc ONLOGON /tr "C:\Windows\system32\clienthost.exe\Client.exe" /rl HIGHEST /f
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:4172
- C:\Windows\system32\clienthost.exe\Client.exe
  "C:\Windows\system32\clienthost.exe\Client.exe"
  2⤵
  - Executes dropped EXE
  - Drops file in System32 directory
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3212
- - C:\Windows\SYSTEM32\schtasks.exe
    "schtasks" /create /tn "Update" /sc ONLOGON /tr "C:\Windows\system32\clienthost.exe\Client.exe" /rl HIGHEST /f
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:3252

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Windows\System32\clienthost.exe\Client.exe

Filesize
3.1MB

MD5
b84554678c815444402cece204dff1cf

SHA1
d33aa8abde2e1d365db0dfdb3d0d2cdde1703b52

SHA256
0cca1529d1dc1550f12746113f6749ea5a943624b8e3f3e1116e53c65de9f6b5

SHA512
6cfd847c76c68dea1afbf61025594965f4a943547031ba3ff96d2698c5ba126fc47b103dbdc10b80b038cb6ad6dc8804c9dcb76977a52adb863080a6b0ce1a1b

Download Submit
memory/1560-0-0x00007FF89B8F3000-0x00007FF89B8F5000-memory.dmp

Filesize
8KB

Download
memory/1560-1-0x0000000000210000-0x0000000000534000-memory.dmp

Filesize
3.1MB

Download
memory/1560-2-0x00007FF89B8F0000-0x00007FF89C3B1000-memory.dmp

Filesize
10.8MB

Download
memory/1560-9-0x00007FF89B8F0000-0x00007FF89C3B1000-memory.dmp

Filesize
10.8MB

Download
memory/3212-10-0x00007FF89B8F0000-0x00007FF89C3B1000-memory.dmp

Filesize
10.8MB

Download
memory/3212-11-0x00007FF89B8F0000-0x00007FF89C3B1000-memory.dmp

Filesize
10.8MB

Download
memory/3212-12-0x0000000002DE0000-0x0000000002E30000-memory.dmp

Filesize
320KB

Download
memory/3212-13-0x000000001C180000-0x000000001C232000-memory.dmp

Filesize
712KB

Download
memory/3212-14-0x00007FF89B8F0000-0x00007FF89C3B1000-memory.dmp

Filesize
10.8MB

Download
memory/3212-15-0x000000001B8A0000-0x000000001B8B2000-memory.dmp

Filesize
72KB

Download
memory/3212-16-0x000000001B930000-0x000000001B96C000-memory.dmp

Filesize
240KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads