quasar | 7c9b4c774fbf907cf1858ea31454992e16d6b6521f880fcd8a12433ce25b6b35

Analysis

max time kernel
95s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
19/11/2024, 04:52

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General

Target

7c9b4c774fbf907cf1858ea31454992e16d6b6521f880fcd8a12433ce25b6b35.exe
Size

1.4MB
MD5

9c23449ea828b1d7d4473aa70f86caa8
SHA1

474136c0e6d3d7c00a2e4f1b1e41f831fbb6dcba
SHA256

7c9b4c774fbf907cf1858ea31454992e16d6b6521f880fcd8a12433ce25b6b35
SHA512

843a03c44436410ae67a56ca00e4f3c19461979f4211b848eadf0ca02641ec3ee13a38f38e03bc316e028aceaa7571e41d1163e7d0933fe0e12d28ea1fae0925
SSDEEP

12288:Er0K/EsBQT93xj6mZw7Y/zLZefq5U6t1uxSxwOz7MIAvKcz9eoJEtww2LOB:ES3V1w8kzSGOzwFV93O

Score

10^/10

quasar man discovery spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

man

nwamama.ydns.eu:3791

Mutex

3302836a-f2f9-4646-981e-42b54ed610dd

Attributes

encryption_key
C058A6A166AF85C9027394334AA2BDC41A9B7D9C
install_name
windows update.exe
log_directory
Logs
reconnect_delay
3000
startup_key
Svchost
subdirectory
SubDir

Signatures

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

Quasar payload 1 IoCs

resource	yara_rule
behavioral2/memory/468-1095-0x0000000000400000-0x0000000000724000-memory.dmp	family_quasar

Suspicious use of NtCreateUserProcessOtherParentProcess 1 IoCs

description	pid	Process	procid_target
PID 2356 created 3456	2356	7c9b4c774fbf907cf1858ea31454992e16d6b6521f880fcd8a12433ce25b6b35.exe	56

Executes dropped EXE 1 IoCs

pid	Process
1588	windows update.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2356 set thread context of 468	2356	7c9b4c774fbf907cf1858ea31454992e16d6b6521f880fcd8a12433ce25b6b35.exe	91

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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	windows update.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	7c9b4c774fbf907cf1858ea31454992e16d6b6521f880fcd8a12433ce25b6b35.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	InstallUtil.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

pid	Process
1728	schtasks.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2356	7c9b4c774fbf907cf1858ea31454992e16d6b6521f880fcd8a12433ce25b6b35.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2356	7c9b4c774fbf907cf1858ea31454992e16d6b6521f880fcd8a12433ce25b6b35.exe
Token: SeDebugPrivilege	2356	7c9b4c774fbf907cf1858ea31454992e16d6b6521f880fcd8a12433ce25b6b35.exe
Token: SeDebugPrivilege	468	InstallUtil.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 2356 wrote to memory of 468	2356	7c9b4c774fbf907cf1858ea31454992e16d6b6521f880fcd8a12433ce25b6b35.exe	91
PID 2356 wrote to memory of 468	2356	7c9b4c774fbf907cf1858ea31454992e16d6b6521f880fcd8a12433ce25b6b35.exe	91
PID 2356 wrote to memory of 468	2356	7c9b4c774fbf907cf1858ea31454992e16d6b6521f880fcd8a12433ce25b6b35.exe	91
PID 2356 wrote to memory of 468	2356	7c9b4c774fbf907cf1858ea31454992e16d6b6521f880fcd8a12433ce25b6b35.exe	91
PID 2356 wrote to memory of 468	2356	7c9b4c774fbf907cf1858ea31454992e16d6b6521f880fcd8a12433ce25b6b35.exe	91
PID 2356 wrote to memory of 468	2356	7c9b4c774fbf907cf1858ea31454992e16d6b6521f880fcd8a12433ce25b6b35.exe	91
PID 2356 wrote to memory of 468	2356	7c9b4c774fbf907cf1858ea31454992e16d6b6521f880fcd8a12433ce25b6b35.exe	91
PID 2356 wrote to memory of 468	2356	7c9b4c774fbf907cf1858ea31454992e16d6b6521f880fcd8a12433ce25b6b35.exe	91
PID 468 wrote to memory of 1728	468	InstallUtil.exe	93
PID 468 wrote to memory of 1728	468	InstallUtil.exe	93
PID 468 wrote to memory of 1728	468	InstallUtil.exe	93
PID 468 wrote to memory of 1588	468	InstallUtil.exe	95
PID 468 wrote to memory of 1588	468	InstallUtil.exe	95
PID 468 wrote to memory of 1588	468	InstallUtil.exe	95

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:3456
- C:\Users\Admin\AppData\Local\Temp\7c9b4c774fbf907cf1858ea31454992e16d6b6521f880fcd8a12433ce25b6b35.exe
  "C:\Users\Admin\AppData\Local\Temp\7c9b4c774fbf907cf1858ea31454992e16d6b6521f880fcd8a12433ce25b6b35.exe"
  2⤵
  - Suspicious use of NtCreateUserProcessOtherParentProcess
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2356
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:468
- - C:\Windows\SysWOW64\schtasks.exe
    "schtasks" /create /tn "Svchost" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\windows update.exe" /rl HIGHEST /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:1728
- - C:\Users\Admin\AppData\Roaming\SubDir\windows update.exe
    "C:\Users\Admin\AppData\Roaming\SubDir\windows update.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:1588

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

C:\Users\Admin\AppData\Roaming\SubDir\windows update.exe

Filesize
41KB

MD5
5d4073b2eb6d217c19f2b22f21bf8d57

SHA1
f0209900fbf08d004b886a0b3ba33ea2b0bf9da8

SHA256
ac1a3f21fcc88f9cee7bf51581eafba24cc76c924f0821deb2afdf1080ddf3d3

SHA512
9ac94880684933ba3407cdc135abc3047543436567af14cd9269c4adc5a6535db7b867d6de0d6238a21b94e69f9890dbb5739155871a624520623a7e56872159

Download Submit
memory/468-1094-0x0000000074F50000-0x0000000075700000-memory.dmp

Filesize
7.7MB

Download
memory/468-1095-0x0000000000400000-0x0000000000724000-memory.dmp

Filesize
3.1MB

Download
memory/468-1096-0x0000000005530000-0x000000000553A000-memory.dmp

Filesize
40KB

Download
memory/468-1097-0x0000000074F50000-0x0000000075700000-memory.dmp

Filesize
7.7MB

Download
memory/468-1106-0x0000000074F50000-0x0000000075700000-memory.dmp

Filesize
7.7MB

Download
memory/1588-1110-0x0000000074F50000-0x0000000075700000-memory.dmp

Filesize
7.7MB

Download
memory/1588-1109-0x0000000074F50000-0x0000000075700000-memory.dmp

Filesize
7.7MB

Download
memory/1588-1104-0x0000000000300000-0x000000000030C000-memory.dmp

Filesize
48KB

Download
memory/1588-1107-0x0000000074F50000-0x0000000075700000-memory.dmp

Filesize
7.7MB

Download
memory/1588-1105-0x0000000004990000-0x00000000049AA000-memory.dmp

Filesize
104KB

Download
memory/2356-50-0x0000000006CD0000-0x0000000006ED7000-memory.dmp

Filesize
2.0MB

Download
memory/2356-28-0x0000000006CD0000-0x0000000006ED7000-memory.dmp

Filesize
2.0MB

Download
memory/2356-7-0x0000000006CD0000-0x0000000006ED7000-memory.dmp

Filesize
2.0MB

Download
memory/2356-18-0x0000000006CD0000-0x0000000006ED7000-memory.dmp

Filesize
2.0MB

Download
memory/2356-30-0x0000000006CD0000-0x0000000006ED7000-memory.dmp

Filesize
2.0MB

Download
memory/2356-36-0x0000000006CD0000-0x0000000006ED7000-memory.dmp

Filesize
2.0MB

Download
memory/2356-42-0x0000000006CD0000-0x0000000006ED7000-memory.dmp

Filesize
2.0MB

Download
memory/2356-46-0x0000000006CD0000-0x0000000006ED7000-memory.dmp

Filesize
2.0MB

Download
memory/2356-64-0x0000000006CD0000-0x0000000006ED7000-memory.dmp

Filesize
2.0MB

Download
memory/2356-62-0x0000000006CD0000-0x0000000006ED7000-memory.dmp

Filesize
2.0MB

Download
memory/2356-70-0x0000000006CD0000-0x0000000006ED7000-memory.dmp

Filesize
2.0MB

Download
memory/2356-68-0x0000000006CD0000-0x0000000006ED7000-memory.dmp

Filesize
2.0MB

Download
memory/2356-66-0x0000000006CD0000-0x0000000006ED7000-memory.dmp

Filesize
2.0MB

Download
memory/2356-60-0x0000000006CD0000-0x0000000006ED7000-memory.dmp

Filesize
2.0MB

Download
memory/2356-56-0x0000000006CD0000-0x0000000006ED7000-memory.dmp

Filesize
2.0MB

Download
memory/2356-54-0x0000000006CD0000-0x0000000006ED7000-memory.dmp

Filesize
2.0MB

Download
memory/2356-58-0x0000000006CD0000-0x0000000006ED7000-memory.dmp

Filesize
2.0MB

Download
memory/2356-52-0x0000000006CD0000-0x0000000006ED7000-memory.dmp

Filesize
2.0MB

Download
memory/2356-44-0x0000000006CD0000-0x0000000006ED7000-memory.dmp

Filesize
2.0MB

Download
memory/2356-6-0x0000000007000000-0x0000000007092000-memory.dmp

Filesize
584KB

Download
memory/2356-48-0x0000000006CD0000-0x0000000006ED7000-memory.dmp

Filesize
2.0MB

Download
memory/2356-40-0x0000000006CD0000-0x0000000006ED7000-memory.dmp

Filesize
2.0MB

Download
memory/2356-38-0x0000000006CD0000-0x0000000006ED7000-memory.dmp

Filesize
2.0MB

Download
memory/2356-34-0x0000000006CD0000-0x0000000006ED7000-memory.dmp

Filesize
2.0MB

Download
memory/2356-32-0x0000000006CD0000-0x0000000006ED7000-memory.dmp

Filesize
2.0MB

Download
memory/2356-14-0x0000000006CD0000-0x0000000006ED7000-memory.dmp

Filesize
2.0MB

Download
memory/2356-26-0x0000000006CD0000-0x0000000006ED7000-memory.dmp

Filesize
2.0MB

Download
memory/2356-24-0x0000000006CD0000-0x0000000006ED7000-memory.dmp

Filesize
2.0MB

Download
memory/2356-22-0x0000000006CD0000-0x0000000006ED7000-memory.dmp

Filesize
2.0MB

Download
memory/2356-20-0x0000000006CD0000-0x0000000006ED7000-memory.dmp

Filesize
2.0MB

Download
memory/2356-16-0x0000000006CD0000-0x0000000006ED7000-memory.dmp

Filesize
2.0MB

Download
memory/2356-12-0x0000000006CD0000-0x0000000006ED7000-memory.dmp

Filesize
2.0MB

Download
memory/2356-10-0x0000000006CD0000-0x0000000006ED7000-memory.dmp

Filesize
2.0MB

Download
memory/2356-8-0x0000000006CD0000-0x0000000006ED7000-memory.dmp

Filesize
2.0MB

Download
memory/2356-1081-0x0000000074F5E000-0x0000000074F5F000-memory.dmp

Filesize
4KB

Download
memory/2356-1082-0x0000000074F50000-0x0000000075700000-memory.dmp

Filesize
7.7MB

Download
memory/2356-1083-0x0000000007110000-0x000000000728E000-memory.dmp

Filesize
1.5MB

Download
memory/2356-1084-0x00000000072D0000-0x000000000731C000-memory.dmp

Filesize
304KB

Download
memory/2356-1089-0x0000000074F50000-0x0000000075700000-memory.dmp

Filesize
7.7MB

Download
memory/2356-5-0x00000000074B0000-0x0000000007A54000-memory.dmp

Filesize
5.6MB

Download
memory/2356-4-0x0000000006CD0000-0x0000000006EDE000-memory.dmp

Filesize
2.1MB

Download
memory/2356-3-0x00000000032D0000-0x00000000032E0000-memory.dmp

Filesize
64KB

Download
memory/2356-2-0x0000000074F50000-0x0000000075700000-memory.dmp

Filesize
7.7MB

Download
memory/2356-1-0x0000000000DC0000-0x0000000000F30000-memory.dmp

Filesize
1.4MB

Download
memory/2356-0-0x0000000074F5E000-0x0000000074F5F000-memory.dmp

Filesize
4KB

Download
memory/2356-1090-0x0000000008A90000-0x0000000008AE4000-memory.dmp

Filesize
336KB

Download
memory/2356-1091-0x0000000074F50000-0x0000000075700000-memory.dmp

Filesize
7.7MB

Download
memory/2356-1088-0x0000000074F50000-0x0000000075700000-memory.dmp

Filesize
7.7MB

Download
memory/2356-1093-0x0000000074F50000-0x0000000075700000-memory.dmp

Filesize
7.7MB

Download