quasar | 8dfad053c59f61f99b65b3e48e81d29b392c1e7bd24dbd4a4799b8fa25111a46

General

Target

Client-built.exe
Size

3.1MB
MD5

215a9fa05bcc5e8058ba6059df5a31bd
SHA1

9687de7a8d9a54a5d3bcf3df961b4b54295652fc
SHA256

8dfad053c59f61f99b65b3e48e81d29b392c1e7bd24dbd4a4799b8fa25111a46
SHA512

19b7446dc6125e2f1b7e036b40bc0ac5a144340a8f9226a03782f5a15706a309c378092e023ddf4574fad9a20cd30e6d3eb44395b1a1f4fb05392b82cb88b616
SSDEEP

49152:rvmI22SsaNYfdPBldt698dBcjHJqX0NmZ5LoGyi8XTHHB72eh2NT:rvr22SsaNYfdPBldt6+dBcjH4X0e

Score

10^/10

quasar office04 spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

C2

dragonbornwashere-43022.portmap.host:43022

Mutex

d3a4bd6a-eb48-45c2-af96-7600c691081f

Attributes

encryption_key
874DAD54C1F8000E0795D3F80C381F8EF9ABF5D4
install_name
Warp.exe
log_directory
Logs
reconnect_delay
3000
startup_key
WindowsHealth
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/432-1-0x00000000008C0000-0x0000000000BE4000-memory.dmp	family_quasar
behavioral1/files/0x0009000000016cd8-5.dat	family_quasar
behavioral1/memory/2880-9-0x0000000001040000-0x0000000001364000-memory.dmp	family_quasar

Executes dropped EXE 1 IoCs

pid	Process
2880	Warp.exe

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

System Information Discovery
T1082

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
2532	schtasks.exe
2912	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	432	Client-built.exe
Token: SeDebugPrivilege	2880	Warp.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2880	Warp.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
2880	Warp.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2880	Warp.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 432 wrote to memory of 2532	432	Client-built.exe	29
PID 432 wrote to memory of 2532	432	Client-built.exe	29
PID 432 wrote to memory of 2532	432	Client-built.exe	29
PID 432 wrote to memory of 2880	432	Client-built.exe	31
PID 432 wrote to memory of 2880	432	Client-built.exe	31
PID 432 wrote to memory of 2880	432	Client-built.exe	31
PID 2880 wrote to memory of 2912	2880	Warp.exe	32
PID 2880 wrote to memory of 2912	2880	Warp.exe	32
PID 2880 wrote to memory of 2912	2880	Warp.exe	32

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Users\Admin\AppData\Local\Temp\Client-built.exe
"C:\Users\Admin\AppData\Local\Temp\Client-built.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:432
- C:\Windows\system32\schtasks.exe
  "schtasks" /create /tn "WindowsHealth" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Warp.exe" /rl HIGHEST /f
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:2532
- C:\Users\Admin\AppData\Roaming\SubDir\Warp.exe
  "C:\Users\Admin\AppData\Roaming\SubDir\Warp.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2880
- - C:\Windows\system32\schtasks.exe
    "schtasks" /create /tn "WindowsHealth" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Warp.exe" /rl HIGHEST /f
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:2912

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
3.1MB

MD5
215a9fa05bcc5e8058ba6059df5a31bd

SHA1
9687de7a8d9a54a5d3bcf3df961b4b54295652fc

SHA256
8dfad053c59f61f99b65b3e48e81d29b392c1e7bd24dbd4a4799b8fa25111a46

SHA512
19b7446dc6125e2f1b7e036b40bc0ac5a144340a8f9226a03782f5a15706a309c378092e023ddf4574fad9a20cd30e6d3eb44395b1a1f4fb05392b82cb88b616

Download Submit
memory/432-0-0x000007FEF65A3000-0x000007FEF65A4000-memory.dmp

Filesize
4KB

Download
memory/432-1-0x00000000008C0000-0x0000000000BE4000-memory.dmp

Filesize
3.1MB

Download
memory/432-2-0x000007FEF65A0000-0x000007FEF6F8C000-memory.dmp

Filesize
9.9MB

Download
memory/432-8-0x000007FEF65A0000-0x000007FEF6F8C000-memory.dmp

Filesize
9.9MB

Download
memory/2880-9-0x0000000001040000-0x0000000001364000-memory.dmp

Filesize
3.1MB

Download
memory/2880-11-0x000007FEF65A0000-0x000007FEF6F8C000-memory.dmp

Filesize
9.9MB

Download
memory/2880-10-0x000007FEF65A0000-0x000007FEF6F8C000-memory.dmp

Filesize
9.9MB

Download
memory/2880-12-0x000007FEF65A0000-0x000007FEF6F8C000-memory.dmp

Filesize
9.9MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads