quasar | 01349efa40959e8c4653c93da14f7b11c0a6fbe54894d998970abd46ca701d6e

General

Target

06201f911b2f736433fac73c68b2194a.exe
Size

4.8MB
MD5

06201f911b2f736433fac73c68b2194a
SHA1

4d7221f72b4b541bb7efb2a36cac419391d532ed
SHA256

01349efa40959e8c4653c93da14f7b11c0a6fbe54894d998970abd46ca701d6e
SHA512

461604e159a010cb97d39ad683aab654d4c56512c2d437f9adcaa7f51a032aec880f0c9641ede195eefb80333d0f4f329e77352856d37b0c34107965535a6b43
SSDEEP

49152:DTvC/MTQYxsWR7a522meghLwOqxEs08Y6m2ZyoblJP6fa:HjTQYxsWRimeghLwPx6GZyobHP

Score

10^/10

quasar 1606 discovery spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

1606

C2

pixels.game-server.cc:1606

Mutex

6d96d222-8b64-4e23-a33e-b2753466d47c

Attributes

encryption_key
0D9465E10679C48F6CD017D507EF5A31654D1928
install_name
Client.exe
log_directory
wLogs
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 3 IoCs

resource	yara_rule
behavioral1/memory/2624-33-0x0000000000370000-0x0000000000694000-memory.dmp	family_quasar
behavioral1/memory/2624-35-0x0000000000370000-0x0000000000694000-memory.dmp	family_quasar
behavioral1/memory/2624-31-0x0000000000370000-0x0000000000694000-memory.dmp	family_quasar

Checks BIOS information in registry 2 TTPs 1 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	06201f911b2f736433fac73c68b2194a.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service

T1102

flow	ioc
4	drive.google.com
5	drive.google.com

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2536 set thread context of 2624	2536	06201f911b2f736433fac73c68b2194a.exe	33

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 3 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	06201f911b2f736433fac73c68b2194a.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	csc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Cmd.exe

NTFS ADS 2 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\AppData\Local\Temp\winmgmts:\root\cimv2	06201f911b2f736433fac73c68b2194a.exe
File opened for modification	C:\Users\Admin\AppData\Local\Temp\winmgmts:\root\CIMV2	06201f911b2f736433fac73c68b2194a.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
2536	06201f911b2f736433fac73c68b2194a.exe
2536	06201f911b2f736433fac73c68b2194a.exe
2536	06201f911b2f736433fac73c68b2194a.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2536	06201f911b2f736433fac73c68b2194a.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2624	csc.exe

Suspicious use of FindShellTrayWindow 3 IoCs

pid	Process
2536	06201f911b2f736433fac73c68b2194a.exe
2536	06201f911b2f736433fac73c68b2194a.exe
2536	06201f911b2f736433fac73c68b2194a.exe

Suspicious use of SendNotifyMessage 3 IoCs

pid	Process
2536	06201f911b2f736433fac73c68b2194a.exe
2536	06201f911b2f736433fac73c68b2194a.exe
2536	06201f911b2f736433fac73c68b2194a.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2624	csc.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 2536 wrote to memory of 2624	2536	06201f911b2f736433fac73c68b2194a.exe	33
PID 2536 wrote to memory of 2624	2536	06201f911b2f736433fac73c68b2194a.exe	33
PID 2536 wrote to memory of 2624	2536	06201f911b2f736433fac73c68b2194a.exe	33
PID 2536 wrote to memory of 2624	2536	06201f911b2f736433fac73c68b2194a.exe	33
PID 2536 wrote to memory of 2624	2536	06201f911b2f736433fac73c68b2194a.exe	33
PID 2536 wrote to memory of 2624	2536	06201f911b2f736433fac73c68b2194a.exe	33
PID 2536 wrote to memory of 2900	2536	06201f911b2f736433fac73c68b2194a.exe	34
PID 2536 wrote to memory of 2900	2536	06201f911b2f736433fac73c68b2194a.exe	34
PID 2536 wrote to memory of 2900	2536	06201f911b2f736433fac73c68b2194a.exe	34
PID 2536 wrote to memory of 2900	2536	06201f911b2f736433fac73c68b2194a.exe	34

C:\Users\Admin\AppData\Local\Temp\06201f911b2f736433fac73c68b2194a.exe
"C:\Users\Admin\AppData\Local\Temp\06201f911b2f736433fac73c68b2194a.exe"
1⤵
- Checks BIOS information in registry
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- NTFS ADS
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:2536
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:2624
- C:\Windows\SysWOW64\Cmd.exe
  "C:\Windows\SysWOW64\Cmd.exe" 2624
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2900

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Web Service

1

T1102

Exfiltration

Impact

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Downloads

memory/2624-29-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

Filesize
4KB

Download
memory/2624-33-0x0000000000370000-0x0000000000694000-memory.dmp

Filesize
3.1MB

Download
memory/2624-35-0x0000000000370000-0x0000000000694000-memory.dmp

Filesize
3.1MB

Download
memory/2624-31-0x0000000000370000-0x0000000000694000-memory.dmp

Filesize
3.1MB

Download
memory/2624-28-0x0000000000370000-0x0000000000694000-memory.dmp

Filesize
3.1MB

Download

Analysis

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