quasar | c196286c4abe88a9242b9f619c261571a658244e4e77272e33dd2527606087a0

General

Target

c196286c4abe88a9242b9f619c261571a658244e4e77272e33dd2527606087a0.exe
Size

551B
MD5

2ffd76a01df2c01b424688a63c8f769e
SHA1

2cabb8e5854db69ae9d836deea7c554df6404d10
SHA256

c196286c4abe88a9242b9f619c261571a658244e4e77272e33dd2527606087a0
SHA512

6ce5c376b98960ce6c318c7f958f5b042b15282f12f53e899449330354273d49368c32fa672e2199d4eeb8e13bfb7dcdf0d90c314a8c9559534f4c1fb500883e

Score

10^/10

quasar 2026 discovery spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

2026

C2

win32updatess.DUCKDNS.ORG:2

Mutex

b70adc1c-122d-4b90-9f59-304d0ab81cd5

Attributes

encryption_key
CE02DB1ED3D345B2461CC2276CDEEDF58EF19723
install_name
Client.exe
log_directory
Logs
reconnect_delay
3000
startup_key
Quasar Client Startup
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/3584-25-0x0000000000400000-0x0000000000724000-memory.dmp	family_quasar

Downloads MZ/PE file

Checks computer location settings 2 TTPs 2 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\Control Panel\International\Geo\Nation	c196286c4abe88a9242b9f619c261571a658244e4e77272e33dd2527606087a0.exe
Key value queried	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\Control Panel\International\Geo\Nation	RegAsm.exe

Executes dropped EXE 1 IoCs

pid	Process
3120	c.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3120 set thread context of 3584	3120	c.exe	97

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 7 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	c196286c4abe88a9242b9f619c261571a658244e4e77272e33dd2527606087a0.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	c.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegAsm.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	chcp.com
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PING.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegAsm.exe

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 1 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
4216	PING.EXE

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
4216	PING.EXE

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3584	RegAsm.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3584	RegAsm.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 1312 wrote to memory of 3120	1312	c196286c4abe88a9242b9f619c261571a658244e4e77272e33dd2527606087a0.exe	84
PID 1312 wrote to memory of 3120	1312	c196286c4abe88a9242b9f619c261571a658244e4e77272e33dd2527606087a0.exe	84
PID 1312 wrote to memory of 3120	1312	c196286c4abe88a9242b9f619c261571a658244e4e77272e33dd2527606087a0.exe	84
PID 3120 wrote to memory of 3584	3120	c.exe	97
PID 3120 wrote to memory of 3584	3120	c.exe	97
PID 3120 wrote to memory of 3584	3120	c.exe	97
PID 3120 wrote to memory of 3584	3120	c.exe	97
PID 3120 wrote to memory of 3584	3120	c.exe	97
PID 3120 wrote to memory of 3584	3120	c.exe	97
PID 3120 wrote to memory of 3584	3120	c.exe	97
PID 3120 wrote to memory of 3584	3120	c.exe	97
PID 3584 wrote to memory of 1112	3584	RegAsm.exe	102
PID 3584 wrote to memory of 1112	3584	RegAsm.exe	102
PID 3584 wrote to memory of 1112	3584	RegAsm.exe	102
PID 1112 wrote to memory of 1012	1112	cmd.exe	104
PID 1112 wrote to memory of 1012	1112	cmd.exe	104
PID 1112 wrote to memory of 1012	1112	cmd.exe	104
PID 1112 wrote to memory of 4216	1112	cmd.exe	105
PID 1112 wrote to memory of 4216	1112	cmd.exe	105
PID 1112 wrote to memory of 4216	1112	cmd.exe	105
PID 1112 wrote to memory of 4352	1112	cmd.exe	107
PID 1112 wrote to memory of 4352	1112	cmd.exe	107
PID 1112 wrote to memory of 4352	1112	cmd.exe	107

C:\Users\Admin\AppData\Local\Temp\c196286c4abe88a9242b9f619c261571a658244e4e77272e33dd2527606087a0.exe
"C:\Users\Admin\AppData\Local\Temp\c196286c4abe88a9242b9f619c261571a658244e4e77272e33dd2527606087a0.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1312
- C:\Users\Admin\AppData\Local\Temp\c.exe
  "C:\Users\Admin\AppData\Local\Temp\c.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3120
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
    3⤵
    - Checks computer location settings
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:3584
  - - C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\Kxxc673E3RI2.bat" "
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious use of WriteProcessMemory
      PID:1112
    - - C:\Windows\SysWOW64\chcp.com
        
        chcp 65001
        5⤵
        System Location Discovery: System Language Discovery
        
        PID:1012
    - - C:\Windows\SysWOW64\PING.EXE
        
        ping -n 10 localhost
        5⤵
        System Location Discovery: System Language Discovery
        System Network Configuration Discovery: Internet Connection Discovery
        Runs ping.exe
        
        PID:4216
    - - C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
        
        "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
        5⤵
        System Location Discovery: System Language Discovery
        
        PID:4352

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

Remote System Discovery

1

T1018

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

System Network Configuration Discovery

1

T1016

Internet Connection Discovery

1

T1016.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\RegAsm.exe.log

Filesize
1KB

MD5
38b07cd5da5c740e9629fd801dc26e5a

SHA1
42816159ab9367165cf58603b09b134d488c1690

SHA256
20049cc7ade63a31f442dfd2b99740f0512fdcc764266b8b105292e30d2b7483

SHA512
1769ffefe181531476e10311295f38d11b85b5ec3710000b5cb081675e5f233792f96bb4178b75fd0e2cfc86965e7368173d22799a1e9fa3317ddd49047fab5a

Download Submit
C:\Users\Admin\AppData\Local\Temp\Kxxc673E3RI2.bat

Filesize
215B

MD5
9e95f56e9566ac8812f67057aec0435f

SHA1
1dbaa0220d1bf17e15e756cad8c0e4307306bef6

SHA256
57fe969735cd4b4831c57002a1876d4823b96e55cbc6e36259832fc140ec9d85

SHA512
0c36dd80c6798104638a4eb244e11db3a38fd99237558d8a4febcc51a349ef7ba0fb1baa1ec3d2ceb9bc553a9244bc7e45813f1d881aff3cb9e21f699d42764b

Download Submit
C:\Users\Admin\AppData\Local\Temp\c.exe

Filesize
3.3MB

MD5
85f734c7ff103995e9ffa75bf661ef4f

SHA1
577f8c3cf3c1c78c7f227508d764c6f9c41d4e5c

SHA256
12ec384e29c8c0f15c05583dd84dbe719c454d70cafca9ee3de8dd2fa51f05ee

SHA512
c273bfbd0ffda0625ba8c2b91af6a105cc734ccd544f20f7d43f75328c34585f643bb2c9158d4107ac3404ad3278107200c984a3694359230b55999a9de026ac

Download Submit
memory/3120-22-0x0000000074E10000-0x00000000755C0000-memory.dmp

Filesize
7.7MB

Download
memory/3120-24-0x0000000005400000-0x000000000541E000-memory.dmp

Filesize
120KB

Download
memory/3120-15-0x000000000CE80000-0x000000000D1B4000-memory.dmp

Filesize
3.2MB

Download
memory/3120-16-0x000000000D760000-0x000000000DD04000-memory.dmp

Filesize
5.6MB

Download
memory/3120-17-0x0000000006640000-0x00000000066D2000-memory.dmp

Filesize
584KB

Download
memory/3120-18-0x0000000002BF0000-0x0000000002BF6000-memory.dmp

Filesize
24KB

Download
memory/3120-19-0x00000000068F0000-0x00000000068FA000-memory.dmp

Filesize
40KB

Download
memory/3120-20-0x0000000006AE0000-0x0000000006B56000-memory.dmp

Filesize
472KB

Download
memory/3120-21-0x0000000074E1E000-0x0000000074E1F000-memory.dmp

Filesize
4KB

Download
memory/3120-13-0x0000000005260000-0x0000000005266000-memory.dmp

Filesize
24KB

Download
memory/3120-23-0x0000000006C60000-0x0000000006F86000-memory.dmp

Filesize
3.1MB

Download
memory/3120-14-0x0000000074E10000-0x00000000755C0000-memory.dmp

Filesize
7.7MB

Download
memory/3120-11-0x0000000074E1E000-0x0000000074E1F000-memory.dmp

Filesize
4KB

Download
memory/3120-27-0x0000000074E10000-0x00000000755C0000-memory.dmp

Filesize
7.7MB

Download
memory/3120-12-0x00000000005E0000-0x000000000093A000-memory.dmp

Filesize
3.4MB

Download
memory/3584-29-0x0000000074E10000-0x00000000755C0000-memory.dmp

Filesize
7.7MB

Download
memory/3584-30-0x0000000006350000-0x0000000006968000-memory.dmp

Filesize
6.1MB

Download
memory/3584-31-0x0000000005E60000-0x0000000005EB0000-memory.dmp

Filesize
320KB

Download
memory/3584-32-0x00000000060D0000-0x0000000006182000-memory.dmp

Filesize
712KB

Download
memory/3584-33-0x0000000074E10000-0x00000000755C0000-memory.dmp

Filesize
7.7MB

Download
memory/3584-38-0x0000000074E10000-0x00000000755C0000-memory.dmp

Filesize
7.7MB

Download
memory/3584-28-0x0000000074E10000-0x00000000755C0000-memory.dmp

Filesize
7.7MB

Download
memory/3584-25-0x0000000000400000-0x0000000000724000-memory.dmp

Filesize
3.1MB

Download
memory/4352-41-0x0000000000A90000-0x0000000000AA2000-memory.dmp

Filesize
72KB

Download

Analysis

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