quasar | 6299e3156cc953585df57ec5f47b8674bee9598c479cd6096871126e2d4632cf

General

Target

0x000600000001b030-21.exe
Size

3.1MB
MD5

e59e289b47fee7506e2cc216378f3955
SHA1

0dc7ab970aac7e9348928415ee5bdae424415489
SHA256

6299e3156cc953585df57ec5f47b8674bee9598c479cd6096871126e2d4632cf
SHA512

0c0c815d387ee0edf5a2ac1323377b4f93a2d76a5061bbaa04cf3f41e4bb053440561608da9ace7387c3433b0ae1888fdbe724fc0840b38733a3dba462cb1cef
SSDEEP

49152:Dv+I22SsaNYfdPBldt698dBcjHnMOBqsarFUoGdkATHHB72eh2NT:Dvz22SsaNYfdPBldt6+dBcjHMoqc0

Score

10^/10

quasar slave spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Slave

C2

fgudhiiugiufgifufgihdhuidfxgd.duckdns.org:4782

Mutex

c01ef685-50b2-41b1-af94-aee5bc04e6fd

Attributes

encryption_key
6550C5FD133683B3330870C778B7DB73E923F472
install_name
svchost.exe
log_directory
Logs
reconnect_delay
3000
startup_key
svchost
subdirectory
SubDir

Signatures

Quasar RAT
Quasar is an open source Remote Access Tool.
trojan spyware quasar

Quasar payload 3 IoCs

Processes:

resource	yara_rule
behavioral2/memory/4700-0-0x00000000005E0000-0x0000000000904000-memory.dmp	family_quasar
C:\Windows\System32\SubDir\svchost.exe	family_quasar
C:\Windows\system32\SubDir\svchost.exe	family_quasar

Executes dropped EXE 1 IoCs

Processes:

svchost.exe

pid process

3280 svchost.exe
Looks up external IP address via web service 2 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.

Processes:

flow ioc

41 api.ipify.org
42 api.ipify.org

pid	process
3280	svchost.exe

flow	ioc
41	api.ipify.org
42	api.ipify.org

Drops file in System32 directory 5 IoCs

Processes:

0x000600000001b030-21.exesvchost.exe

description	ioc	process
File opened for modification	C:\Windows\system32\SubDir\svchost.exe	0x000600000001b030-21.exe
File opened for modification	C:\Windows\system32\SubDir	0x000600000001b030-21.exe
File opened for modification	C:\Windows\system32\SubDir\svchost.exe	svchost.exe
File opened for modification	C:\Windows\system32\SubDir	svchost.exe
File created	C:\Windows\system32\SubDir\svchost.exe	0x000600000001b030-21.exe

Creates scheduled task(s) 1 TTPs 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task/Job
T1053

Processes:

schtasks.exeschtasks.exe

pid process

1116 schtasks.exe
4056 schtasks.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

0x000600000001b030-21.exesvchost.exe

description pid process

Token: SeDebugPrivilege 4700 0x000600000001b030-21.exe
Token: SeDebugPrivilege 3280 svchost.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

svchost.exe

pid process

3280 svchost.exe

pid	process
1116	schtasks.exe
4056	schtasks.exe

description	pid	process
Token: SeDebugPrivilege	4700	0x000600000001b030-21.exe
Token: SeDebugPrivilege	3280	svchost.exe

pid	process
3280	svchost.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

0x000600000001b030-21.exesvchost.exe

description	pid	process	target process
PID 4700 wrote to memory of 1116	4700	0x000600000001b030-21.exe	schtasks.exe
PID 4700 wrote to memory of 1116	4700	0x000600000001b030-21.exe	schtasks.exe
PID 4700 wrote to memory of 3280	4700	0x000600000001b030-21.exe	svchost.exe
PID 4700 wrote to memory of 3280	4700	0x000600000001b030-21.exe	svchost.exe
PID 3280 wrote to memory of 4056	3280	svchost.exe	schtasks.exe
PID 3280 wrote to memory of 4056	3280	svchost.exe	schtasks.exe

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\0x000600000001b030-21.exe
"C:\Users\Admin\AppData\Local\Temp\0x000600000001b030-21.exe"
1⤵
- Drops file in System32 directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4700

C:\Windows\SYSTEM32\schtasks.exe
"schtasks" /create /tn "svchost" /sc ONLOGON /tr "C:\Windows\system32\SubDir\svchost.exe" /rl HIGHEST /f
2⤵
- Creates scheduled task(s)
PID:1116

C:\Windows\system32\SubDir\svchost.exe
"C:\Windows\system32\SubDir\svchost.exe"
2⤵
- Executes dropped EXE
- Drops file in System32 directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3280

C:\Windows\SYSTEM32\schtasks.exe
"schtasks" /create /tn "svchost" /sc ONLOGON /tr "C:\Windows\system32\SubDir\svchost.exe" /rl HIGHEST /f
3⤵
- Creates scheduled task(s)
PID:4056

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Persistence

Scheduled Task/Job

1

T1053

Privilege Escalation

Scheduled Task/Job

1

T1053

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Windows\System32\SubDir\svchost.exe
Filesize
3.1MB

MD5
e59e289b47fee7506e2cc216378f3955

SHA1
0dc7ab970aac7e9348928415ee5bdae424415489

SHA256
6299e3156cc953585df57ec5f47b8674bee9598c479cd6096871126e2d4632cf

SHA512
0c0c815d387ee0edf5a2ac1323377b4f93a2d76a5061bbaa04cf3f41e4bb053440561608da9ace7387c3433b0ae1888fdbe724fc0840b38733a3dba462cb1cef

Download Submit
C:\Windows\system32\SubDir\svchost.exe
Filesize
3.1MB

MD5
e59e289b47fee7506e2cc216378f3955

SHA1
0dc7ab970aac7e9348928415ee5bdae424415489

SHA256
6299e3156cc953585df57ec5f47b8674bee9598c479cd6096871126e2d4632cf

SHA512
0c0c815d387ee0edf5a2ac1323377b4f93a2d76a5061bbaa04cf3f41e4bb053440561608da9ace7387c3433b0ae1888fdbe724fc0840b38733a3dba462cb1cef

Download Submit
memory/3280-9-0x00007FFBFDA30000-0x00007FFBFE4F1000-memory.dmp

Filesize
10.8MB

Download
memory/3280-11-0x000000001D750000-0x000000001D7A0000-memory.dmp

Filesize
320KB

Download
memory/3280-12-0x000000001D860000-0x000000001D912000-memory.dmp

Filesize
712KB

Download
memory/3280-15-0x000000001D7C0000-0x000000001D7D2000-memory.dmp

Filesize
72KB

Download
memory/3280-16-0x000000001D820000-0x000000001D85C000-memory.dmp

Filesize
240KB

Download
memory/3280-17-0x00007FFBFDA30000-0x00007FFBFE4F1000-memory.dmp

Filesize
10.8MB

Download
memory/4700-0-0x00000000005E0000-0x0000000000904000-memory.dmp

Filesize
3.1MB

Download
memory/4700-1-0x00007FFBFDA30000-0x00007FFBFE4F1000-memory.dmp

Filesize
10.8MB

Download
memory/4700-2-0x0000000002970000-0x0000000002980000-memory.dmp

Filesize
64KB

Download
memory/4700-10-0x00007FFBFDA30000-0x00007FFBFE4F1000-memory.dmp

Filesize
10.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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