quasar | 632ebbd71c57497b70d5d0d270737706af23a00a789c7b53c13110252a35ba7d

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
21/08/2024, 10:24

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General

Target
632ebbd71c57497b70d5d0d270737706af23a00a789c7b53c13110252a35ba7d.exe
Size 1.0MB
Sample240821-mfe4yashpe
SHA256 632ebbd71c57497b70d5d0d270737706af23a00a789c7b53c13110252a35ba7d
MD5 dff805106f7e22c65887f4b40ae63af7
SHA1 9deda5715cfd27bce5d07e8c9da3888652239030
SHA512 43c1bacfb18a767ca9f7d8ca34ab964abde0cb026d34c29adcc2d70f52b9e4055cfaf8c2d4f2ee9079ba3cc11fa4d3dc62d2ece9a624c6cb19db5ffed0c563d3
SSDEEP 24576:uHMwUDPHMYHM62oEHMxszlt0que+gl02xJ/7UbPv5LvE9HM:yI7bwoYzv0B2lxJjuPWd
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

quasar image1 discovery spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.3.0.0

Botnet

Image1

onemilliondollars.duckdns.org:4781
185.165.153.138:4781
fivemilliondollars.duckdns.org:4781

Mutex

MUTEX_hcyE6Pmu2wtUGYAlgy

Attributes

encryption_key
5f9oz3a4d9d5TlQM1xmm
install_name
winlog.exe
log_directory
Logs
reconnect_delay
3000
startup_key
Intel Corpration
subdirectory
SubDir

Signatures

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

Quasar payload 1 IoCs

resource	yara_rule
behavioral2/memory/2668-13-0x0000000000400000-0x000000000045E000-memory.dmp	family_quasar

Executes dropped EXE 2 IoCs

pid	Process
1576	winlog.exe
980	winlog.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.

flow	ioc
43	ip-api.com

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2340 set thread context of 2668	2340	632ebbd71c57497b70d5d0d270737706af23a00a789c7b53c13110252a35ba7d.exe	98
PID 1576 set thread context of 980	1576	winlog.exe	111

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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	winlog.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	winlog.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	632ebbd71c57497b70d5d0d270737706af23a00a789c7b53c13110252a35ba7d.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	632ebbd71c57497b70d5d0d270737706af23a00a789c7b53c13110252a35ba7d.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
3888	schtasks.exe
1412	schtasks.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2340	632ebbd71c57497b70d5d0d270737706af23a00a789c7b53c13110252a35ba7d.exe
2340	632ebbd71c57497b70d5d0d270737706af23a00a789c7b53c13110252a35ba7d.exe
2340	632ebbd71c57497b70d5d0d270737706af23a00a789c7b53c13110252a35ba7d.exe
1576	winlog.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	2340	632ebbd71c57497b70d5d0d270737706af23a00a789c7b53c13110252a35ba7d.exe
Token: SeDebugPrivilege	2668	632ebbd71c57497b70d5d0d270737706af23a00a789c7b53c13110252a35ba7d.exe
Token: SeDebugPrivilege	1576	winlog.exe
Token: SeDebugPrivilege	980	winlog.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
980	winlog.exe

Suspicious use of WriteProcessMemory 28 IoCs

description	pid	Process	procid_target
PID 2340 wrote to memory of 1724	2340	632ebbd71c57497b70d5d0d270737706af23a00a789c7b53c13110252a35ba7d.exe	97
PID 2340 wrote to memory of 1724	2340	632ebbd71c57497b70d5d0d270737706af23a00a789c7b53c13110252a35ba7d.exe	97
PID 2340 wrote to memory of 1724	2340	632ebbd71c57497b70d5d0d270737706af23a00a789c7b53c13110252a35ba7d.exe	97
PID 2340 wrote to memory of 2668	2340	632ebbd71c57497b70d5d0d270737706af23a00a789c7b53c13110252a35ba7d.exe	98
PID 2340 wrote to memory of 2668	2340	632ebbd71c57497b70d5d0d270737706af23a00a789c7b53c13110252a35ba7d.exe	98
PID 2340 wrote to memory of 2668	2340	632ebbd71c57497b70d5d0d270737706af23a00a789c7b53c13110252a35ba7d.exe	98
PID 2340 wrote to memory of 2668	2340	632ebbd71c57497b70d5d0d270737706af23a00a789c7b53c13110252a35ba7d.exe	98
PID 2340 wrote to memory of 2668	2340	632ebbd71c57497b70d5d0d270737706af23a00a789c7b53c13110252a35ba7d.exe	98
PID 2340 wrote to memory of 2668	2340	632ebbd71c57497b70d5d0d270737706af23a00a789c7b53c13110252a35ba7d.exe	98
PID 2340 wrote to memory of 2668	2340	632ebbd71c57497b70d5d0d270737706af23a00a789c7b53c13110252a35ba7d.exe	98
PID 2340 wrote to memory of 2668	2340	632ebbd71c57497b70d5d0d270737706af23a00a789c7b53c13110252a35ba7d.exe	98
PID 2668 wrote to memory of 3888	2668	632ebbd71c57497b70d5d0d270737706af23a00a789c7b53c13110252a35ba7d.exe	99
PID 2668 wrote to memory of 3888	2668	632ebbd71c57497b70d5d0d270737706af23a00a789c7b53c13110252a35ba7d.exe	99
PID 2668 wrote to memory of 3888	2668	632ebbd71c57497b70d5d0d270737706af23a00a789c7b53c13110252a35ba7d.exe	99
PID 2668 wrote to memory of 1576	2668	632ebbd71c57497b70d5d0d270737706af23a00a789c7b53c13110252a35ba7d.exe	101
PID 2668 wrote to memory of 1576	2668	632ebbd71c57497b70d5d0d270737706af23a00a789c7b53c13110252a35ba7d.exe	101
PID 2668 wrote to memory of 1576	2668	632ebbd71c57497b70d5d0d270737706af23a00a789c7b53c13110252a35ba7d.exe	101
PID 1576 wrote to memory of 980	1576	winlog.exe	111
PID 1576 wrote to memory of 980	1576	winlog.exe	111
PID 1576 wrote to memory of 980	1576	winlog.exe	111
PID 1576 wrote to memory of 980	1576	winlog.exe	111
PID 1576 wrote to memory of 980	1576	winlog.exe	111
PID 1576 wrote to memory of 980	1576	winlog.exe	111
PID 1576 wrote to memory of 980	1576	winlog.exe	111
PID 1576 wrote to memory of 980	1576	winlog.exe	111
PID 980 wrote to memory of 1412	980	winlog.exe	112
PID 980 wrote to memory of 1412	980	winlog.exe	112
PID 980 wrote to memory of 1412	980	winlog.exe	112

C:\Users\Admin\AppData\Local\Temp\632ebbd71c57497b70d5d0d270737706af23a00a789c7b53c13110252a35ba7d.exe
"C:\Users\Admin\AppData\Local\Temp\632ebbd71c57497b70d5d0d270737706af23a00a789c7b53c13110252a35ba7d.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2340
- C:\Users\Admin\AppData\Local\Temp\632ebbd71c57497b70d5d0d270737706af23a00a789c7b53c13110252a35ba7d.exe
  "C:\Users\Admin\AppData\Local\Temp\632ebbd71c57497b70d5d0d270737706af23a00a789c7b53c13110252a35ba7d.exe"
  2⤵
  PID:1724
- C:\Users\Admin\AppData\Local\Temp\632ebbd71c57497b70d5d0d270737706af23a00a789c7b53c13110252a35ba7d.exe
  "C:\Users\Admin\AppData\Local\Temp\632ebbd71c57497b70d5d0d270737706af23a00a789c7b53c13110252a35ba7d.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2668
- - C:\Windows\SysWOW64\schtasks.exe
    "schtasks" /create /tn "Intel Corpration" /sc ONLOGON /tr "C:\Users\Admin\AppData\Local\Temp\632ebbd71c57497b70d5d0d270737706af23a00a789c7b53c13110252a35ba7d.exe" /rl HIGHEST /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:3888
- - C:\Users\Admin\AppData\Roaming\SubDir\winlog.exe
    "C:\Users\Admin\AppData\Roaming\SubDir\winlog.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:1576
  - - C:\Users\Admin\AppData\Roaming\SubDir\winlog.exe
      "C:\Users\Admin\AppData\Roaming\SubDir\winlog.exe"
      4⤵
      Executes dropped EXE
      System Location Discovery: System Language Discovery
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of SetWindowsHookEx
      Suspicious use of WriteProcessMemory
      PID:980
    - - C:\Windows\SysWOW64\schtasks.exe
        
        "schtasks" /create /tn "Intel Corpration" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\winlog.exe" /rl HIGHEST /f
        5⤵
        System Location Discovery: System Language Discovery
        Scheduled Task/Job: Scheduled Task
        
        PID:1412

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

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Downloads

632ebbd71c57497b70d5d0d270737706af23a00a789c7b53c13110252a35ba7d.exe.log

Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\632ebbd71c57497b70d5d0d270737706af23a00a789c7b53c13110252a35ba7d.exe.log
Size 1KB
SHA256 c18db6aecad2436da4a63ff26af4e3a337cca48f01c21b8db494fe5ccc60e553
MD5 17573558c4e714f606f997e5157afaac
SHA1 13e16e9415ceef429aaf124139671ebeca09ed23
SHA512 f4edf13f05a0d142e4dd42802098c8c44988ee8869621a62c2b565a77c9a95857f636583ff8d6d9baa366603d98b9bfbf1fc75bc6f9f8f83c80cb1215b2941cc
MD5 SHA1 SHA512

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winlog.exe

Path C:\Users\Admin\AppData\Roaming\SubDir\winlog.exe
Size 1.0MB
SHA256 632ebbd71c57497b70d5d0d270737706af23a00a789c7b53c13110252a35ba7d
MD5 dff805106f7e22c65887f4b40ae63af7
SHA1 9deda5715cfd27bce5d07e8c9da3888652239030
SHA512 43c1bacfb18a767ca9f7d8ca34ab964abde0cb026d34c29adcc2d70f52b9e4055cfaf8c2d4f2ee9079ba3cc11fa4d3dc62d2ece9a624c6cb19db5ffed0c563d3
SSDEEP 24576:uHMwUDPHMYHM62oEHMxszlt0que+gl02xJ/7UbPv5LvE9HM:yI7bwoYzv0B2lxJjuPWd
MD5 SHA1 SHA512 SSDEEP

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memory/1576-35-0x0000000074F30000-0x00000000756E0000-memory.dmp

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memory/1576-30-0x0000000074F30000-0x00000000756E0000-memory.dmp

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memory/1576-29-0x0000000074F30000-0x00000000756E0000-memory.dmp

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memory/1576-27-0x0000000074F30000-0x00000000756E0000-memory.dmp

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memory/2340-12-0x0000000006730000-0x000000000678E000-memory.dmp

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memory/2340-4-0x00000000057F0000-0x0000000005882000-memory.dmp

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memory/2340-8-0x0000000005980000-0x000000000599A000-memory.dmp

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memory/2340-9-0x0000000074F3E000-0x0000000074F3F000-memory.dmp

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memory/2340-10-0x0000000074F30000-0x00000000756E0000-memory.dmp

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memory/2340-11-0x00000000066A0000-0x0000000006730000-memory.dmp

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memory/2340-0-0x0000000074F3E000-0x0000000074F3F000-memory.dmp

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memory/2340-1-0x0000000000C10000-0x0000000000D18000-memory.dmp

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memory/2340-6-0x0000000005A30000-0x0000000005A86000-memory.dmp

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memory/2340-2-0x0000000005750000-0x00000000057EC000-memory.dmp

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memory/2340-17-0x0000000074F30000-0x00000000756E0000-memory.dmp

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memory/2340-3-0x0000000005DA0000-0x0000000006344000-memory.dmp

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memory/2340-7-0x0000000074F30000-0x00000000756E0000-memory.dmp

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memory/2340-5-0x0000000005700000-0x000000000570A000-memory.dmp

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memory/2668-21-0x0000000006D10000-0x0000000006D4C000-memory.dmp

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memory/2668-20-0x0000000006690000-0x00000000066A2000-memory.dmp

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memory/2668-19-0x0000000005A60000-0x0000000005AC6000-memory.dmp

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memory/2668-28-0x0000000074F30000-0x00000000756E0000-memory.dmp

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memory/2668-18-0x0000000074F30000-0x00000000756E0000-memory.dmp

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memory/2668-16-0x0000000074F30000-0x00000000756E0000-memory.dmp

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memory/2668-13-0x0000000000400000-0x000000000045E000-memory.dmp

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