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 2 IoCs

resource	yara_rule
behavioral2/memory/3044-1-0x0000000000190000-0x00000000004B4000-memory.dmp	family_quasar
behavioral2/files/0x000b000000023b98-6.dat	family_quasar

Executes dropped EXE 1 IoCs

pid	Process
3064	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
1448	schtasks.exe
2952	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3044	Client-built.exe
Token: SeDebugPrivilege	3064	Warp.exe

Suspicious use of FindShellTrayWindow 3 IoCs

pid	Process
3064	Warp.exe
3064	Warp.exe
3064	Warp.exe

Suspicious use of SendNotifyMessage 3 IoCs

pid	Process
3064	Warp.exe
3064	Warp.exe
3064	Warp.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3064	Warp.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3044 wrote to memory of 1448	3044	Client-built.exe	86
PID 3044 wrote to memory of 1448	3044	Client-built.exe	86
PID 3044 wrote to memory of 3064	3044	Client-built.exe	88
PID 3044 wrote to memory of 3064	3044	Client-built.exe	88
PID 3064 wrote to memory of 2952	3064	Warp.exe	89
PID 3064 wrote to memory of 2952	3064	Warp.exe	89

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:3044
- 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:1448
- 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:3064
- - 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:2952

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/3044-10-0x00007FFFC2030000-0x00007FFFC2AF1000-memory.dmp

Filesize
10.8MB

Download
memory/3044-1-0x0000000000190000-0x00000000004B4000-memory.dmp

Filesize
3.1MB

Download
memory/3044-2-0x00007FFFC2030000-0x00007FFFC2AF1000-memory.dmp

Filesize
10.8MB

Download
memory/3044-0-0x00007FFFC2033000-0x00007FFFC2035000-memory.dmp

Filesize
8KB

Download
memory/3064-11-0x00007FFFC2030000-0x00007FFFC2AF1000-memory.dmp

Filesize
10.8MB

Download
memory/3064-9-0x00007FFFC2030000-0x00007FFFC2AF1000-memory.dmp

Filesize
10.8MB

Download
memory/3064-12-0x000000001CA50000-0x000000001CAA0000-memory.dmp

Filesize
320KB

Download
memory/3064-13-0x000000001CB60000-0x000000001CC12000-memory.dmp

Filesize
712KB

Download
memory/3064-14-0x000000001CAC0000-0x000000001CAD2000-memory.dmp

Filesize
72KB

Download
memory/3064-15-0x000000001CB20000-0x000000001CB5C000-memory.dmp

Filesize
240KB

Download
memory/3064-16-0x00007FFFC2030000-0x00007FFFC2AF1000-memory.dmp

Filesize
10.8MB

Download
memory/3064-17-0x000000001D760000-0x000000001D909000-memory.dmp

Filesize
1.7MB

Download
memory/3064-18-0x000000001D760000-0x000000001D909000-memory.dmp

Filesize
1.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads