quasar | 4ca77febd10fb2e3a0ebd202ffd7efb798912d80c76ebdbc76b68b7b59de115a

General

Target

Client-built.exe
Size

348KB
MD5

1b3caea7f3034ec10eecb722a369c652
SHA1

7bf564e5695c879a823068f19b9c5b25d9c3ed53
SHA256

4ca77febd10fb2e3a0ebd202ffd7efb798912d80c76ebdbc76b68b7b59de115a
SHA512

96d59d9a0bca26121ea0643840a3c568fb5ee5fa21cb4e6278cb229ad9b34c9445c22f406daa3c8c11f84f30995064612a1e24eff3211878eae2fd5c5b81a646
SSDEEP

6144:9MNHXf500ME3EaGbbJ23fR34sZh85r+UxRXNO:ud50LNqR3nh8l+UxRXNO

Score

10^/10

quasar meedo discovery spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.3.0.0

Botnet

Meedo

C2

2.tcp.eu.ngrok.io:8080

2.tcp.eu.ngrok.io:13677

Mutex

QSR_MUTEX_F7GTMqsQBGCZlMGQ5p

Attributes

encryption_key
U2vyTIQERz1Bf5527M3K
install_name
win.exe
log_directory
Logs
reconnect_delay
3000
startup_key
Windows Runtime
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/60-1-0x0000000000940000-0x000000000099E000-memory.dmp	family_quasar
behavioral2/files/0x000a000000023b9c-11.dat	family_quasar

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\Control Panel\International\Geo\Nation	win.exe

Executes dropped EXE 1 IoCs

pid	Process
404	win.exe

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

Web Service

T1102

flow	ioc
18	2.tcp.eu.ngrok.io

Looks up external IP address via web service 1 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
12	ip-api.com

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 8 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	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	win.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	chcp.com
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PING.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Client-built.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
4484	PING.EXE

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
4484	PING.EXE

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
3124	schtasks.exe
5092	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	60	Client-built.exe
Token: SeDebugPrivilege	404	win.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
404	win.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 60 wrote to memory of 3124	60	Client-built.exe	84
PID 60 wrote to memory of 3124	60	Client-built.exe	84
PID 60 wrote to memory of 3124	60	Client-built.exe	84
PID 60 wrote to memory of 404	60	Client-built.exe	86
PID 60 wrote to memory of 404	60	Client-built.exe	86
PID 60 wrote to memory of 404	60	Client-built.exe	86
PID 404 wrote to memory of 5092	404	win.exe	87
PID 404 wrote to memory of 5092	404	win.exe	87
PID 404 wrote to memory of 5092	404	win.exe	87
PID 404 wrote to memory of 1632	404	win.exe	104
PID 404 wrote to memory of 1632	404	win.exe	104
PID 404 wrote to memory of 1632	404	win.exe	104
PID 404 wrote to memory of 3872	404	win.exe	106
PID 404 wrote to memory of 3872	404	win.exe	106
PID 404 wrote to memory of 3872	404	win.exe	106
PID 3872 wrote to memory of 1296	3872	cmd.exe	108
PID 3872 wrote to memory of 1296	3872	cmd.exe	108
PID 3872 wrote to memory of 1296	3872	cmd.exe	108
PID 3872 wrote to memory of 4484	3872	cmd.exe	109
PID 3872 wrote to memory of 4484	3872	cmd.exe	109
PID 3872 wrote to memory of 4484	3872	cmd.exe	109

C:\Users\Admin\AppData\Local\Temp\Client-built.exe
"C:\Users\Admin\AppData\Local\Temp\Client-built.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:60
- C:\Windows\SysWOW64\schtasks.exe
  "schtasks" /create /tn "Windows Runtime" /sc ONLOGON /tr "C:\Users\Admin\AppData\Local\Temp\Client-built.exe" /rl HIGHEST /f
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:3124
- C:\Users\Admin\AppData\Roaming\Subdir\win.exe
  "C:\Users\Admin\AppData\Roaming\Subdir\win.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:404
- - C:\Windows\SysWOW64\schtasks.exe
    "schtasks" /create /tn "Windows Runtime" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\Subdir\win.exe" /rl HIGHEST /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:5092
- - C:\Windows\SysWOW64\schtasks.exe
    "schtasks" /delete /tn "Windows Runtime" /f
    3⤵
    - System Location Discovery: System Language Discovery
    PID:1632
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\TwVgEpNB4wSP.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:3872
  - - C:\Windows\SysWOW64\chcp.com
      chcp 65001
      4⤵
      System Location Discovery: System Language Discovery
      PID:1296
  - - C:\Windows\SysWOW64\PING.EXE
      ping -n 10 localhost
      4⤵
      System Location Discovery: System Language Discovery
      System Network Configuration Discovery: Internet Connection Discovery
      Runs ping.exe
      PID:4484

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

Remote System Discovery

1

T1018

System Information Discovery

2

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

Web Service

1

T1102

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\TwVgEpNB4wSP.bat

Filesize
259B

MD5
a75bac7124fc8af20e9cbcab50b86403

SHA1
f223697b24e6757194a47eee34e3f78dbf637aa7

SHA256
b3d831e14d1fd9edc5f6843344b2e2142a5fd8b3c50548ec32fa9f99da20942d

SHA512
a44cc179ff8bdd7cecb1e4fbd9632945481c718a71d74ea6ad6f153f44cf714de9ad20eb837a9439dc5b9efae1eb77ccb56287556c4e6575618fadfbd9fba720

Download Submit
C:\Users\Admin\AppData\Roaming\Logs\12-16-~1

Filesize
224B

MD5
378b364500e7f54cbb8c1d1803b9c2e1

SHA1
c2022cf85f2fba8993eb79a83e2a21c9e0cb9ccf

SHA256
fd0072fc9f6b61abc8a319a22608baed7356d86379874a8f9112fd2dbdba1d07

SHA512
829df5adbae2d6b0ebeed560555bd6e74cafca74907d470bbc808242a86f21a5761152544d210d607a64d470a8918a989b2dd4a490d65770ac6ecb99a045b942

Download Submit
C:\Users\Admin\AppData\Roaming\Subdir\win.exe

Filesize
348KB

MD5
1b3caea7f3034ec10eecb722a369c652

SHA1
7bf564e5695c879a823068f19b9c5b25d9c3ed53

SHA256
4ca77febd10fb2e3a0ebd202ffd7efb798912d80c76ebdbc76b68b7b59de115a

SHA512
96d59d9a0bca26121ea0643840a3c568fb5ee5fa21cb4e6278cb229ad9b34c9445c22f406daa3c8c11f84f30995064612a1e24eff3211878eae2fd5c5b81a646

Download Submit
memory/60-4-0x0000000074AA0000-0x0000000075250000-memory.dmp

Filesize
7.7MB

Download
memory/60-2-0x0000000005870000-0x0000000005E14000-memory.dmp

Filesize
5.6MB

Download
memory/60-5-0x0000000005470000-0x00000000054D6000-memory.dmp

Filesize
408KB

Download
memory/60-6-0x00000000060C0000-0x00000000060D2000-memory.dmp

Filesize
72KB

Download
memory/60-7-0x0000000006600000-0x000000000663C000-memory.dmp

Filesize
240KB

Download
memory/60-3-0x00000000053D0000-0x0000000005462000-memory.dmp

Filesize
584KB

Download
memory/60-1-0x0000000000940000-0x000000000099E000-memory.dmp

Filesize
376KB

Download
memory/60-0-0x0000000074AAE000-0x0000000074AAF000-memory.dmp

Filesize
4KB

Download
memory/60-14-0x0000000074AA0000-0x0000000075250000-memory.dmp

Filesize
7.7MB

Download
memory/404-16-0x0000000074AA0000-0x0000000075250000-memory.dmp

Filesize
7.7MB

Download
memory/404-19-0x0000000074AA0000-0x0000000075250000-memory.dmp

Filesize
7.7MB

Download
memory/404-18-0x0000000006840000-0x000000000684A000-memory.dmp

Filesize
40KB

Download
memory/404-25-0x0000000074AA0000-0x0000000075250000-memory.dmp

Filesize
7.7MB

Download
memory/404-15-0x0000000074AA0000-0x0000000075250000-memory.dmp

Filesize
7.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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