quasar | 47a15a0aac65d13a6584ef7fc87a0cddb29fdf65c8a91953d34ab246526d119c

Analysis

max time kernel
80s
max time network
19s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
25-11-2024 14:51

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General

Target

47a15a0aac65d13a6584ef7fc87a0cddb29fdf65c8a91953d34ab246526d119c.exe
Size

876KB
MD5

b86b4d4fd31a31c1f0928ceb0483021e
SHA1

05391d6db90e961e02d2b16166572e9061768282
SHA256

47a15a0aac65d13a6584ef7fc87a0cddb29fdf65c8a91953d34ab246526d119c
SHA512

ea9b80462539b41d786d1566b71c847afe33adac8971016406bee37efa64f8f460d0578a9374cf3adeb9862047705f756eafb39d2a57746f56b7ad907f1922f4
SSDEEP

12288:6COzWsvIDqNc4Gqu7x5BRd6CMWMpFY0wjTyE9OXcg6VpUoME4KN6eclg5QUC:BOzxiqgjx5TddMWM0/83UDMTKgwC

Score

10^/10

quasar aoy discovery spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.3.0.0

Botnet

AOY

87.120.120.27:61540

127.0.0.1:61540

87.121.86.205:61541

Mutex

QSR_MUTEX_NOCv4TURf46HbVbxyc

Attributes

encryption_key
fVsndNhImy9VosyZSQbQ
install_name
updates.exe
log_directory
Logs
reconnect_delay
4000
startup_key
Windows Update
subdirectory
Windows

Signatures

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

Quasar payload 3 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2200-6-0x0000000000400000-0x000000000045E000-memory.dmp	family_quasar
behavioral1/memory/2200-10-0x0000000000400000-0x000000000045E000-memory.dmp	family_quasar
behavioral1/memory/2200-8-0x0000000000400000-0x000000000045E000-memory.dmp	family_quasar

Executes dropped EXE 2 IoCs

Processes:

updates.exeupdates.exe

pid	Process
2108	updates.exe
2780	updates.exe

Loads dropped DLL 2 IoCs

Processes:

47a15a0aac65d13a6584ef7fc87a0cddb29fdf65c8a91953d34ab246526d119c.exeupdates.exe

pid	Process
2200	47a15a0aac65d13a6584ef7fc87a0cddb29fdf65c8a91953d34ab246526d119c.exe
2108	updates.exe

Looks up external IP address via web service 1 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

Processes:

flow	ioc
2	ip-api.com

Suspicious use of SetThreadContext 2 IoCs

Processes:

47a15a0aac65d13a6584ef7fc87a0cddb29fdf65c8a91953d34ab246526d119c.exeupdates.exe

description	pid	Process	procid_target
PID 3040 set thread context of 2200	3040	47a15a0aac65d13a6584ef7fc87a0cddb29fdf65c8a91953d34ab246526d119c.exe	30
PID 2108 set thread context of 2780	2108	updates.exe	35

System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

Processes:

47a15a0aac65d13a6584ef7fc87a0cddb29fdf65c8a91953d34ab246526d119c.exe47a15a0aac65d13a6584ef7fc87a0cddb29fdf65c8a91953d34ab246526d119c.exeschtasks.exeupdates.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	47a15a0aac65d13a6584ef7fc87a0cddb29fdf65c8a91953d34ab246526d119c.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	47a15a0aac65d13a6584ef7fc87a0cddb29fdf65c8a91953d34ab246526d119c.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	updates.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

Processes:

schtasks.exe

pid	Process
2876	schtasks.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

47a15a0aac65d13a6584ef7fc87a0cddb29fdf65c8a91953d34ab246526d119c.exe47a15a0aac65d13a6584ef7fc87a0cddb29fdf65c8a91953d34ab246526d119c.exeupdates.exe

description	pid	Process
Token: SeDebugPrivilege	3040	47a15a0aac65d13a6584ef7fc87a0cddb29fdf65c8a91953d34ab246526d119c.exe
Token: SeDebugPrivilege	2200	47a15a0aac65d13a6584ef7fc87a0cddb29fdf65c8a91953d34ab246526d119c.exe
Token: SeDebugPrivilege	2108	updates.exe

Suspicious use of WriteProcessMemory 32 IoCs

Processes:

47a15a0aac65d13a6584ef7fc87a0cddb29fdf65c8a91953d34ab246526d119c.exe47a15a0aac65d13a6584ef7fc87a0cddb29fdf65c8a91953d34ab246526d119c.exeupdates.exe

description	pid	Process	procid_target
PID 3040 wrote to memory of 2200	3040	47a15a0aac65d13a6584ef7fc87a0cddb29fdf65c8a91953d34ab246526d119c.exe	30
PID 3040 wrote to memory of 2200	3040	47a15a0aac65d13a6584ef7fc87a0cddb29fdf65c8a91953d34ab246526d119c.exe	30
PID 3040 wrote to memory of 2200	3040	47a15a0aac65d13a6584ef7fc87a0cddb29fdf65c8a91953d34ab246526d119c.exe	30
PID 3040 wrote to memory of 2200	3040	47a15a0aac65d13a6584ef7fc87a0cddb29fdf65c8a91953d34ab246526d119c.exe	30
PID 3040 wrote to memory of 2200	3040	47a15a0aac65d13a6584ef7fc87a0cddb29fdf65c8a91953d34ab246526d119c.exe	30
PID 3040 wrote to memory of 2200	3040	47a15a0aac65d13a6584ef7fc87a0cddb29fdf65c8a91953d34ab246526d119c.exe	30
PID 3040 wrote to memory of 2200	3040	47a15a0aac65d13a6584ef7fc87a0cddb29fdf65c8a91953d34ab246526d119c.exe	30
PID 3040 wrote to memory of 2200	3040	47a15a0aac65d13a6584ef7fc87a0cddb29fdf65c8a91953d34ab246526d119c.exe	30
PID 3040 wrote to memory of 2200	3040	47a15a0aac65d13a6584ef7fc87a0cddb29fdf65c8a91953d34ab246526d119c.exe	30
PID 2200 wrote to memory of 2876	2200	47a15a0aac65d13a6584ef7fc87a0cddb29fdf65c8a91953d34ab246526d119c.exe	32
PID 2200 wrote to memory of 2876	2200	47a15a0aac65d13a6584ef7fc87a0cddb29fdf65c8a91953d34ab246526d119c.exe	32
PID 2200 wrote to memory of 2876	2200	47a15a0aac65d13a6584ef7fc87a0cddb29fdf65c8a91953d34ab246526d119c.exe	32
PID 2200 wrote to memory of 2876	2200	47a15a0aac65d13a6584ef7fc87a0cddb29fdf65c8a91953d34ab246526d119c.exe	32
PID 2200 wrote to memory of 2108	2200	47a15a0aac65d13a6584ef7fc87a0cddb29fdf65c8a91953d34ab246526d119c.exe	34
PID 2200 wrote to memory of 2108	2200	47a15a0aac65d13a6584ef7fc87a0cddb29fdf65c8a91953d34ab246526d119c.exe	34
PID 2200 wrote to memory of 2108	2200	47a15a0aac65d13a6584ef7fc87a0cddb29fdf65c8a91953d34ab246526d119c.exe	34
PID 2200 wrote to memory of 2108	2200	47a15a0aac65d13a6584ef7fc87a0cddb29fdf65c8a91953d34ab246526d119c.exe	34
PID 2200 wrote to memory of 2108	2200	47a15a0aac65d13a6584ef7fc87a0cddb29fdf65c8a91953d34ab246526d119c.exe	34
PID 2200 wrote to memory of 2108	2200	47a15a0aac65d13a6584ef7fc87a0cddb29fdf65c8a91953d34ab246526d119c.exe	34
PID 2200 wrote to memory of 2108	2200	47a15a0aac65d13a6584ef7fc87a0cddb29fdf65c8a91953d34ab246526d119c.exe	34
PID 2108 wrote to memory of 2780	2108	updates.exe	35
PID 2108 wrote to memory of 2780	2108	updates.exe	35
PID 2108 wrote to memory of 2780	2108	updates.exe	35
PID 2108 wrote to memory of 2780	2108	updates.exe	35
PID 2108 wrote to memory of 2780	2108	updates.exe	35
PID 2108 wrote to memory of 2780	2108	updates.exe	35
PID 2108 wrote to memory of 2780	2108	updates.exe	35
PID 2108 wrote to memory of 2780	2108	updates.exe	35
PID 2108 wrote to memory of 2780	2108	updates.exe	35
PID 2108 wrote to memory of 2780	2108	updates.exe	35
PID 2108 wrote to memory of 2780	2108	updates.exe	35
PID 2108 wrote to memory of 2780	2108	updates.exe	35

C:\Users\Admin\AppData\Local\Temp\47a15a0aac65d13a6584ef7fc87a0cddb29fdf65c8a91953d34ab246526d119c.exe
"C:\Users\Admin\AppData\Local\Temp\47a15a0aac65d13a6584ef7fc87a0cddb29fdf65c8a91953d34ab246526d119c.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3040
- C:\Users\Admin\AppData\Local\Temp\47a15a0aac65d13a6584ef7fc87a0cddb29fdf65c8a91953d34ab246526d119c.exe
  C:\Users\Admin\AppData\Local\Temp\47a15a0aac65d13a6584ef7fc87a0cddb29fdf65c8a91953d34ab246526d119c.exe
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2200
- - C:\Windows\SysWOW64\schtasks.exe
    "schtasks" /create /tn "Windows Update" /sc ONLOGON /tr "C:\Users\Admin\AppData\Local\Temp\47a15a0aac65d13a6584ef7fc87a0cddb29fdf65c8a91953d34ab246526d119c.exe" /rl HIGHEST /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:2876
- - C:\Users\Admin\AppData\Roaming\Windows\updates.exe
    "C:\Users\Admin\AppData\Roaming\Windows\updates.exe"
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:2108
  - - C:\Users\Admin\AppData\Roaming\Windows\updates.exe
      C:\Users\Admin\AppData\Roaming\Windows\updates.exe
      4⤵
      Executes dropped EXE
      PID:2780

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

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

\Users\Admin\AppData\Roaming\Windows\updates.exe

Filesize
876KB

MD5
b86b4d4fd31a31c1f0928ceb0483021e

SHA1
05391d6db90e961e02d2b16166572e9061768282

SHA256
47a15a0aac65d13a6584ef7fc87a0cddb29fdf65c8a91953d34ab246526d119c

SHA512
ea9b80462539b41d786d1566b71c847afe33adac8971016406bee37efa64f8f460d0578a9374cf3adeb9862047705f756eafb39d2a57746f56b7ad907f1922f4

Download Submit
memory/2108-19-0x0000000000360000-0x0000000000440000-memory.dmp

Filesize
896KB

Download
memory/2200-11-0x0000000074AC0000-0x00000000751AE000-memory.dmp

Filesize
6.9MB

Download
memory/2200-6-0x0000000000400000-0x000000000045E000-memory.dmp

Filesize
376KB

Download
memory/2200-10-0x0000000000400000-0x000000000045E000-memory.dmp

Filesize
376KB

Download
memory/2200-8-0x0000000000400000-0x000000000045E000-memory.dmp

Filesize
376KB

Download
memory/2200-12-0x0000000074AC0000-0x00000000751AE000-memory.dmp

Filesize
6.9MB

Download
memory/2200-20-0x0000000074AC0000-0x00000000751AE000-memory.dmp

Filesize
6.9MB

Download
memory/3040-3-0x0000000074AC0000-0x00000000751AE000-memory.dmp

Filesize
6.9MB

Download
memory/3040-4-0x000000000A0A0000-0x000000000A1A6000-memory.dmp

Filesize
1.0MB

Download
memory/3040-5-0x0000000000410000-0x0000000000416000-memory.dmp

Filesize
24KB

Download
memory/3040-0-0x0000000074ACE000-0x0000000074ACF000-memory.dmp

Filesize
4KB

Download
memory/3040-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/3040-1-0x00000000001B0000-0x0000000000290000-memory.dmp

Filesize
896KB

Download
memory/3040-25-0x0000000074AC0000-0x00000000751AE000-memory.dmp

Filesize
6.9MB

Download