quasar | 7697ebe5ea4766b1653f58aa24327679b35fa917877568238ac306a913289b40

Analysis

max time kernel
142s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20220901-en
resource tags

arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
submitted
22-11-2022 07:32

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General

Target

7697ebe5ea4766b1653f58aa24327679b35fa917877568238ac306a913289b40.exe
Size

502KB
MD5

16db55265ceb495867c35c68a1b672ab
SHA1

1b18cb285e91c3f9c78f4f3a18a8baf5df6b6fc4
SHA256

7697ebe5ea4766b1653f58aa24327679b35fa917877568238ac306a913289b40
SHA512

bc4dde6ef69c606753d05fd303b0385d5dec303ce2b399de37e29dd2c085c53e47309381f34b503f87d27a66420c1c21ba8c98c81490c3614f679b8bfc034a6d
SSDEEP

6144:MTEgdc0Y5ebGbXOsA6j1RdhQA3CpXJ9J6jFivvvcE6Ob8F9ogRXOc0UblHcTR36:MTEgdfYhA6bGqKKpNeYlHcd6

Score

10^/10

quasar office04 spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.0

Botnet

Office04

eggsbenedict.onthewifi.com:2448

Mutex

047fff9d-5ae7-4a17-a172-45ccd40ba62f

Attributes

encryption_key
28D26D97888ABDC848F4C65C4EE630CCEF1C1B67
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 payload 3 IoCs

resource	yara_rule
behavioral2/memory/4460-132-0x0000000000C30000-0x0000000000CB4000-memory.dmp	family_quasar
behavioral2/files/0x0003000000022dd4-135.dat	family_quasar
behavioral2/files/0x0003000000022dd4-136.dat	family_quasar

Executes dropped EXE 1 IoCs

pid	Process
3496	Client.exe

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

System Information Discovery
T1082

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4460	7697ebe5ea4766b1653f58aa24327679b35fa917877568238ac306a913289b40.exe
Token: SeDebugPrivilege	3496	Client.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
3496	Client.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
3496	Client.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 4460 wrote to memory of 3496	4460	7697ebe5ea4766b1653f58aa24327679b35fa917877568238ac306a913289b40.exe	82
PID 4460 wrote to memory of 3496	4460	7697ebe5ea4766b1653f58aa24327679b35fa917877568238ac306a913289b40.exe	82

C:\Users\Admin\AppData\Local\Temp\7697ebe5ea4766b1653f58aa24327679b35fa917877568238ac306a913289b40.exe
"C:\Users\Admin\AppData\Local\Temp\7697ebe5ea4766b1653f58aa24327679b35fa917877568238ac306a913289b40.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4460
- 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
  PID:3496

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\SubDir\Client.exe

Filesize
502KB

MD5
16db55265ceb495867c35c68a1b672ab

SHA1
1b18cb285e91c3f9c78f4f3a18a8baf5df6b6fc4

SHA256
7697ebe5ea4766b1653f58aa24327679b35fa917877568238ac306a913289b40

SHA512
bc4dde6ef69c606753d05fd303b0385d5dec303ce2b399de37e29dd2c085c53e47309381f34b503f87d27a66420c1c21ba8c98c81490c3614f679b8bfc034a6d

Download Submit
C:\Users\Admin\AppData\Roaming\SubDir\Client.exe

Filesize
502KB

MD5
16db55265ceb495867c35c68a1b672ab

SHA1
1b18cb285e91c3f9c78f4f3a18a8baf5df6b6fc4

SHA256
7697ebe5ea4766b1653f58aa24327679b35fa917877568238ac306a913289b40

SHA512
bc4dde6ef69c606753d05fd303b0385d5dec303ce2b399de37e29dd2c085c53e47309381f34b503f87d27a66420c1c21ba8c98c81490c3614f679b8bfc034a6d

Download Submit
memory/3496-138-0x00007FF948800000-0x00007FF9492C1000-memory.dmp

Filesize
10.8MB

Download
memory/3496-139-0x000000001D610000-0x000000001D660000-memory.dmp

Filesize
320KB

Download
memory/3496-140-0x000000001D720000-0x000000001D7D2000-memory.dmp

Filesize
712KB

Download
memory/3496-141-0x00007FF948800000-0x00007FF9492C1000-memory.dmp

Filesize
10.8MB

Download
memory/4460-132-0x0000000000C30000-0x0000000000CB4000-memory.dmp

Filesize
528KB

Download
memory/4460-133-0x00007FF948800000-0x00007FF9492C1000-memory.dmp

Filesize
10.8MB

Download
memory/4460-137-0x00007FF948800000-0x00007FF9492C1000-memory.dmp

Filesize
10.8MB

Download