quasar | 7d1bf9f36689ff81f73bfe204c00bd74dfe42bac0be0920cb55e6fe64f2011fe

General

Target

vous pouvez tester.exe
Size

3.1MB
MD5

86c49761e0261b95630106355c89edaf
SHA1

867c18978287e8bc8b4404db6ed81941f1cf6924
SHA256

7d1bf9f36689ff81f73bfe204c00bd74dfe42bac0be0920cb55e6fe64f2011fe
SHA512

b757e2598545b1a1cca4b0197b0add749594541abff29d2028b95680dc1b3164fa9774b3cdbfcc03e010e26ef718f93eafe0651483fc00f1f9a5cca897e5e6b4
SSDEEP

49152:PvnI22SsaNYfdPBldt698dBcjHEJQgU1JBZoG9eTHHB72eh2NT:PvI22SsaNYfdPBldt6+dBcjH0Qgg

Score

10^/10

quasar office04 discovery spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

C2

192.168.1.213:4782

Mutex

a005cf30-c7bb-4e65-adde-16068da45e4c

Attributes

encryption_key
212E74E6C2BFEEA9C99F90E2F9B3DFE615E9D176
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 2 IoCs

resource	yara_rule
behavioral2/memory/716-1-0x0000000000D40000-0x0000000001064000-memory.dmp	family_quasar
behavioral2/files/0x000b000000023b61-5.dat	family_quasar

Downloads MZ/PE file 1 IoCs

flow	pid	Process
35	2996	Process not Found

Executes dropped EXE 1 IoCs

pid	Process
1940	Client.exe

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 1 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	MicrosoftEdgeUpdate.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
3552	MicrosoftEdgeUpdate.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	716	vous pouvez tester.exe
Token: SeDebugPrivilege	1940	Client.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
1940	Client.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
1940	Client.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1940	Client.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 716 wrote to memory of 1940	716	vous pouvez tester.exe	92
PID 716 wrote to memory of 1940	716	vous pouvez tester.exe	92

C:\Users\Admin\AppData\Local\Temp\vous pouvez tester.exe
"C:\Users\Admin\AppData\Local\Temp\vous pouvez tester.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:716
- C:\Users\Admin\AppData\Roaming\SubDir\Client.exe
  "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  - Suspicious use of SetWindowsHookEx
  PID:1940

C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe
"C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe" /ping 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-PGFwcCBhcHBpZD0iezhBNjlEMzQ1LUQ1NjQtNDYzYy1BRkYxLUE2OUQ5RTUzMEY5Nn0iIHZlcnNpb249IjEyMy4wLjYzMTIuMTIzIiBuZXh0dmVyc2lvbj0iIiBsYW5nPSJlbiIgYnJhbmQ9IkdHTFMiIGNsaWVudD0iIiBpbnN0YWxsYWdlPSIxIiBpbnN0YWxsZGF0ZXRpbWU9IjE3MzkyODMyMzYiIG9vYmVfaW5zdGFsbF90aW1lPSIxMzM4Mzc1NDI1MTE0ODAwMDAiPjxldmVudCBldmVudHR5cGU9IjMxIiBldmVudHJlc3VsdD0iMSIgZXJyb3Jjb2RlPSIwIiBleHRyYWNvZGUxPSIyMTc5ODYyIiBzeXN0ZW1fdXB0aW1lX3RpY2tzPSI0OTIwMjUwMzkzIi8-PC9hcHA-PC9yZXF1ZXN0Pg
1⤵
- System Location Discovery: System Language Discovery
- System Network Configuration Discovery: Internet Connection Discovery
PID:3552

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

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\Roaming\SubDir\Client.exe

Filesize
3.1MB

MD5
86c49761e0261b95630106355c89edaf

SHA1
867c18978287e8bc8b4404db6ed81941f1cf6924

SHA256
7d1bf9f36689ff81f73bfe204c00bd74dfe42bac0be0920cb55e6fe64f2011fe

SHA512
b757e2598545b1a1cca4b0197b0add749594541abff29d2028b95680dc1b3164fa9774b3cdbfcc03e010e26ef718f93eafe0651483fc00f1f9a5cca897e5e6b4

Download Submit
memory/716-0-0x00007FFE36B83000-0x00007FFE36B85000-memory.dmp

Filesize
8KB

Download
memory/716-1-0x0000000000D40000-0x0000000001064000-memory.dmp

Filesize
3.1MB

Download
memory/716-2-0x00007FFE36B80000-0x00007FFE37641000-memory.dmp

Filesize
10.8MB

Download
memory/716-8-0x00007FFE36B80000-0x00007FFE37641000-memory.dmp

Filesize
10.8MB

Download
memory/1940-9-0x00007FFE36B80000-0x00007FFE37641000-memory.dmp

Filesize
10.8MB

Download
memory/1940-10-0x00007FFE36B80000-0x00007FFE37641000-memory.dmp

Filesize
10.8MB

Download
memory/1940-11-0x000000001C910000-0x000000001C960000-memory.dmp

Filesize
320KB

Download
memory/1940-12-0x000000001CA20000-0x000000001CAD2000-memory.dmp

Filesize
712KB

Download
memory/1940-13-0x00007FFE36B80000-0x00007FFE37641000-memory.dmp

Filesize
10.8MB

Download

Analysis

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