quasar | bf07e9ac79ed258fa40f5c00e1b06e88a7648926f9351f4b860352a7d8a1f7ab

Analysis

max time kernel
110s
max time network
118s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
26-11-2024 17:49

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

bf07e9ac79ed258fa40f5c00e1b06e88a7648926f9351f4b860352a7d8a1f7abN.exe
Size

876KB
MD5

96ada2b7d27c62da2635104a0b1d71d0
SHA1

8730396d2c4adcb2b2531ca207d3338604622f15
SHA256

bf07e9ac79ed258fa40f5c00e1b06e88a7648926f9351f4b860352a7d8a1f7ab
SHA512

1084cd57f87c6610897711f2107705d9fdfacb402a9ca4cf8624c04d00d6c04cbeb239b6945484387f22e500d8afcda090379bc25f659b0f0b9fd111422b4215
SSDEEP

24576:weKxzRSGSL0v0mMO5PKDRwszHMC8hrAaRKG:BKxVpSL0AiyDysAC8hrZ

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/2368-6-0x0000000000400000-0x000000000045E000-memory.dmp	family_quasar
behavioral1/memory/2368-8-0x0000000000400000-0x000000000045E000-memory.dmp	family_quasar
behavioral1/memory/2368-12-0x0000000000400000-0x000000000045E000-memory.dmp	family_quasar

Executes dropped EXE 2 IoCs

Processes:

updates.exeupdates.exe

pid	Process
2236	updates.exe
2696	updates.exe

Loads dropped DLL 2 IoCs

Processes:

bf07e9ac79ed258fa40f5c00e1b06e88a7648926f9351f4b860352a7d8a1f7abN.exeupdates.exe

pid	Process
2368	bf07e9ac79ed258fa40f5c00e1b06e88a7648926f9351f4b860352a7d8a1f7abN.exe
2236	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:

bf07e9ac79ed258fa40f5c00e1b06e88a7648926f9351f4b860352a7d8a1f7abN.exeupdates.exe

description	pid	Process	procid_target
PID 2868 set thread context of 2368	2868	bf07e9ac79ed258fa40f5c00e1b06e88a7648926f9351f4b860352a7d8a1f7abN.exe	28
PID 2236 set thread context of 2696	2236	updates.exe	33

System Location Discovery: System Language Discovery 1 TTPs 6 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:

schtasks.exeupdates.exeupdates.exeschtasks.exebf07e9ac79ed258fa40f5c00e1b06e88a7648926f9351f4b860352a7d8a1f7abN.exebf07e9ac79ed258fa40f5c00e1b06e88a7648926f9351f4b860352a7d8a1f7abN.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	updates.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	updates.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	bf07e9ac79ed258fa40f5c00e1b06e88a7648926f9351f4b860352a7d8a1f7abN.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	bf07e9ac79ed258fa40f5c00e1b06e88a7648926f9351f4b860352a7d8a1f7abN.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

Processes:

schtasks.exeschtasks.exe

pid	Process
2784	schtasks.exe
2456	schtasks.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

Processes:

bf07e9ac79ed258fa40f5c00e1b06e88a7648926f9351f4b860352a7d8a1f7abN.exebf07e9ac79ed258fa40f5c00e1b06e88a7648926f9351f4b860352a7d8a1f7abN.exeupdates.exeupdates.exe

description	pid	Process
Token: SeDebugPrivilege	2868	bf07e9ac79ed258fa40f5c00e1b06e88a7648926f9351f4b860352a7d8a1f7abN.exe
Token: SeDebugPrivilege	2368	bf07e9ac79ed258fa40f5c00e1b06e88a7648926f9351f4b860352a7d8a1f7abN.exe
Token: SeDebugPrivilege	2236	updates.exe
Token: SeDebugPrivilege	2696	updates.exe

Suspicious use of WriteProcessMemory 36 IoCs

Processes:

bf07e9ac79ed258fa40f5c00e1b06e88a7648926f9351f4b860352a7d8a1f7abN.exebf07e9ac79ed258fa40f5c00e1b06e88a7648926f9351f4b860352a7d8a1f7abN.exeupdates.exeupdates.exe

description	pid	Process	procid_target
PID 2868 wrote to memory of 2368	2868	bf07e9ac79ed258fa40f5c00e1b06e88a7648926f9351f4b860352a7d8a1f7abN.exe	28
PID 2868 wrote to memory of 2368	2868	bf07e9ac79ed258fa40f5c00e1b06e88a7648926f9351f4b860352a7d8a1f7abN.exe	28
PID 2868 wrote to memory of 2368	2868	bf07e9ac79ed258fa40f5c00e1b06e88a7648926f9351f4b860352a7d8a1f7abN.exe	28
PID 2868 wrote to memory of 2368	2868	bf07e9ac79ed258fa40f5c00e1b06e88a7648926f9351f4b860352a7d8a1f7abN.exe	28
PID 2868 wrote to memory of 2368	2868	bf07e9ac79ed258fa40f5c00e1b06e88a7648926f9351f4b860352a7d8a1f7abN.exe	28
PID 2868 wrote to memory of 2368	2868	bf07e9ac79ed258fa40f5c00e1b06e88a7648926f9351f4b860352a7d8a1f7abN.exe	28
PID 2868 wrote to memory of 2368	2868	bf07e9ac79ed258fa40f5c00e1b06e88a7648926f9351f4b860352a7d8a1f7abN.exe	28
PID 2868 wrote to memory of 2368	2868	bf07e9ac79ed258fa40f5c00e1b06e88a7648926f9351f4b860352a7d8a1f7abN.exe	28
PID 2868 wrote to memory of 2368	2868	bf07e9ac79ed258fa40f5c00e1b06e88a7648926f9351f4b860352a7d8a1f7abN.exe	28
PID 2368 wrote to memory of 2784	2368	bf07e9ac79ed258fa40f5c00e1b06e88a7648926f9351f4b860352a7d8a1f7abN.exe	30
PID 2368 wrote to memory of 2784	2368	bf07e9ac79ed258fa40f5c00e1b06e88a7648926f9351f4b860352a7d8a1f7abN.exe	30
PID 2368 wrote to memory of 2784	2368	bf07e9ac79ed258fa40f5c00e1b06e88a7648926f9351f4b860352a7d8a1f7abN.exe	30
PID 2368 wrote to memory of 2784	2368	bf07e9ac79ed258fa40f5c00e1b06e88a7648926f9351f4b860352a7d8a1f7abN.exe	30
PID 2368 wrote to memory of 2236	2368	bf07e9ac79ed258fa40f5c00e1b06e88a7648926f9351f4b860352a7d8a1f7abN.exe	32
PID 2368 wrote to memory of 2236	2368	bf07e9ac79ed258fa40f5c00e1b06e88a7648926f9351f4b860352a7d8a1f7abN.exe	32
PID 2368 wrote to memory of 2236	2368	bf07e9ac79ed258fa40f5c00e1b06e88a7648926f9351f4b860352a7d8a1f7abN.exe	32
PID 2368 wrote to memory of 2236	2368	bf07e9ac79ed258fa40f5c00e1b06e88a7648926f9351f4b860352a7d8a1f7abN.exe	32
PID 2368 wrote to memory of 2236	2368	bf07e9ac79ed258fa40f5c00e1b06e88a7648926f9351f4b860352a7d8a1f7abN.exe	32
PID 2368 wrote to memory of 2236	2368	bf07e9ac79ed258fa40f5c00e1b06e88a7648926f9351f4b860352a7d8a1f7abN.exe	32
PID 2368 wrote to memory of 2236	2368	bf07e9ac79ed258fa40f5c00e1b06e88a7648926f9351f4b860352a7d8a1f7abN.exe	32
PID 2236 wrote to memory of 2696	2236	updates.exe	33
PID 2236 wrote to memory of 2696	2236	updates.exe	33
PID 2236 wrote to memory of 2696	2236	updates.exe	33
PID 2236 wrote to memory of 2696	2236	updates.exe	33
PID 2236 wrote to memory of 2696	2236	updates.exe	33
PID 2236 wrote to memory of 2696	2236	updates.exe	33
PID 2236 wrote to memory of 2696	2236	updates.exe	33
PID 2236 wrote to memory of 2696	2236	updates.exe	33
PID 2236 wrote to memory of 2696	2236	updates.exe	33
PID 2236 wrote to memory of 2696	2236	updates.exe	33
PID 2236 wrote to memory of 2696	2236	updates.exe	33
PID 2236 wrote to memory of 2696	2236	updates.exe	33
PID 2696 wrote to memory of 2456	2696	updates.exe	34
PID 2696 wrote to memory of 2456	2696	updates.exe	34
PID 2696 wrote to memory of 2456	2696	updates.exe	34
PID 2696 wrote to memory of 2456	2696	updates.exe	34

C:\Users\Admin\AppData\Local\Temp\bf07e9ac79ed258fa40f5c00e1b06e88a7648926f9351f4b860352a7d8a1f7abN.exe
"C:\Users\Admin\AppData\Local\Temp\bf07e9ac79ed258fa40f5c00e1b06e88a7648926f9351f4b860352a7d8a1f7abN.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2868
- C:\Users\Admin\AppData\Local\Temp\bf07e9ac79ed258fa40f5c00e1b06e88a7648926f9351f4b860352a7d8a1f7abN.exe
  C:\Users\Admin\AppData\Local\Temp\bf07e9ac79ed258fa40f5c00e1b06e88a7648926f9351f4b860352a7d8a1f7abN.exe
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2368
- - C:\Windows\SysWOW64\schtasks.exe
    "schtasks" /create /tn "Windows Update" /sc ONLOGON /tr "C:\Users\Admin\AppData\Local\Temp\bf07e9ac79ed258fa40f5c00e1b06e88a7648926f9351f4b860352a7d8a1f7abN.exe" /rl HIGHEST /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:2784
- - 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:2236
  - - C:\Users\Admin\AppData\Roaming\Windows\updates.exe
      C:\Users\Admin\AppData\Roaming\Windows\updates.exe
      4⤵
      Executes dropped EXE
      System Location Discovery: System Language Discovery
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of WriteProcessMemory
      PID:2696
    - - C:\Windows\SysWOW64\schtasks.exe
        
        "schtasks" /create /tn "Windows Update" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\Windows\updates.exe" /rl HIGHEST /f
        5⤵
        System Location Discovery: System Language Discovery
        Scheduled Task/Job: Scheduled Task
        
        PID:2456

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

Replay Monitor

Loading Replay Monitor...

Downloads

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

Filesize
876KB

MD5
96ada2b7d27c62da2635104a0b1d71d0

SHA1
8730396d2c4adcb2b2531ca207d3338604622f15

SHA256
bf07e9ac79ed258fa40f5c00e1b06e88a7648926f9351f4b860352a7d8a1f7ab

SHA512
1084cd57f87c6610897711f2107705d9fdfacb402a9ca4cf8624c04d00d6c04cbeb239b6945484387f22e500d8afcda090379bc25f659b0f0b9fd111422b4215

Download Submit
memory/2236-21-0x0000000000D30000-0x0000000000E10000-memory.dmp

Filesize
896KB

Download
memory/2368-12-0x0000000000400000-0x000000000045E000-memory.dmp

Filesize
376KB

Download
memory/2368-22-0x00000000740D0000-0x00000000747BE000-memory.dmp

Filesize
6.9MB

Download
memory/2368-14-0x00000000740D0000-0x00000000747BE000-memory.dmp

Filesize
6.9MB

Download
memory/2368-13-0x00000000740D0000-0x00000000747BE000-memory.dmp

Filesize
6.9MB

Download
memory/2368-6-0x0000000000400000-0x000000000045E000-memory.dmp

Filesize
376KB

Download
memory/2368-8-0x0000000000400000-0x000000000045E000-memory.dmp

Filesize
376KB

Download
memory/2868-3-0x00000000740D0000-0x00000000747BE000-memory.dmp

Filesize
6.9MB

Download
memory/2868-11-0x00000000740D0000-0x00000000747BE000-memory.dmp

Filesize
6.9MB

Download
memory/2868-5-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2868-4-0x000000000A2C0000-0x000000000A3C6000-memory.dmp

Filesize
1.0MB

Download
memory/2868-0-0x00000000740DE000-0x00000000740DF000-memory.dmp

Filesize
4KB

Download
memory/2868-2-0x0000000000230000-0x0000000000236000-memory.dmp

Filesize
24KB

Download
memory/2868-1-0x00000000010A0000-0x0000000001180000-memory.dmp

Filesize
896KB

Download