quasar | 801d4bbd5bdd9780c9cfb969b61adb16fe20709798a01880fa8cdaf61a56f6d4

General

Target

ModFixer.exe
Size

3.1MB
MD5

dbe30fa7971e0fa7ac8dc6e99af93f1b
SHA1

d92f550a0286af3b7485d0e21d0974c7c59fe5e9
SHA256

801d4bbd5bdd9780c9cfb969b61adb16fe20709798a01880fa8cdaf61a56f6d4
SHA512

739e9429dc5c4f1ad118495600697778d5246965de9200666bd6c3d947fd34a77f5e3fd669033e370e82dd83d821e9ae9ee8d8d3d93ab28780c21fdbb97efb25
SSDEEP

49152:/vKz92YpaQI6oPZlhP3ReybewoLGRJ6jbR3LoGdF8THHB72eh2NT:/v492YpaQI6oPZlhP3YybewoLGRJ6V1

Score

10^/10

quasar slave spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Slave

C2

uk2.localto.net:37735

192.168.1.54:443

192.168.1.54:80

82.47.98.176:80

82.47.98.176:443

Mutex

70129915-f2b5-40ef-aa85-96dbc3efa5c9

Attributes

encryption_key
76B28C3E753D8BB017093D2AA2C736559D00B442
install_name
GorillaTag.exe
log_directory
Steam Error Logs
reconnect_delay
3000
startup_key
Steam WebHelper
subdirectory
SubDir

Signatures

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

Quasar payload 3 IoCs

Processes:

resource	yara_rule
behavioral1/memory/3008-0-0x00000000003C0000-0x00000000006E4000-memory.dmp	family_quasar
C:\Users\Admin\AppData\Roaming\SubDir\GorillaTag.exe	family_quasar
behavioral1/memory/2036-8-0x0000000000170000-0x0000000000494000-memory.dmp	family_quasar

Executes dropped EXE 1 IoCs

Processes:

GorillaTag.exe

pid process

2036 GorillaTag.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082
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

2636 schtasks.exe
2184 schtasks.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

ModFixer.exeGorillaTag.exe

description pid process

Token: SeDebugPrivilege 3008 ModFixer.exe
Token: SeDebugPrivilege 2036 GorillaTag.exe
Suspicious use of FindShellTrayWindow 1 IoCs

Processes:

GorillaTag.exe

pid process

2036 GorillaTag.exe
Suspicious use of SendNotifyMessage 1 IoCs

Processes:

GorillaTag.exe

pid process

2036 GorillaTag.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

GorillaTag.exe

pid process

2036 GorillaTag.exe

pid	process
2036	GorillaTag.exe

pid	process
2636	schtasks.exe
2184	schtasks.exe

description	pid	process
Token: SeDebugPrivilege	3008	ModFixer.exe
Token: SeDebugPrivilege	2036	GorillaTag.exe

pid	process
2036	GorillaTag.exe

pid	process
2036	GorillaTag.exe

pid	process
2036	GorillaTag.exe

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

ModFixer.exeGorillaTag.exe

description	pid	process	target process
PID 3008 wrote to memory of 2184	3008	ModFixer.exe	schtasks.exe
PID 3008 wrote to memory of 2184	3008	ModFixer.exe	schtasks.exe
PID 3008 wrote to memory of 2184	3008	ModFixer.exe	schtasks.exe
PID 3008 wrote to memory of 2036	3008	ModFixer.exe	GorillaTag.exe
PID 3008 wrote to memory of 2036	3008	ModFixer.exe	GorillaTag.exe
PID 3008 wrote to memory of 2036	3008	ModFixer.exe	GorillaTag.exe
PID 2036 wrote to memory of 2636	2036	GorillaTag.exe	schtasks.exe
PID 2036 wrote to memory of 2636	2036	GorillaTag.exe	schtasks.exe
PID 2036 wrote to memory of 2636	2036	GorillaTag.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\ModFixer.exe
"C:\Users\Admin\AppData\Local\Temp\ModFixer.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3008

C:\Windows\system32\schtasks.exe
"schtasks" /create /tn "Steam WebHelper" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\GorillaTag.exe" /rl HIGHEST /f
2⤵
- Creates scheduled task(s)
PID:2184

C:\Users\Admin\AppData\Roaming\SubDir\GorillaTag.exe
"C:\Users\Admin\AppData\Roaming\SubDir\GorillaTag.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:2036

C:\Windows\system32\schtasks.exe
"schtasks" /create /tn "Steam WebHelper" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\GorillaTag.exe" /rl HIGHEST /f
3⤵
- Creates scheduled task(s)
PID:2636

Network

MITRE ATT&CK Matrix ATT&CK v13

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

System Information Discovery

1

T1082

Query Registry

1

T1012

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Roaming\SubDir\GorillaTag.exe
Filesize
3.1MB

MD5
dbe30fa7971e0fa7ac8dc6e99af93f1b

SHA1
d92f550a0286af3b7485d0e21d0974c7c59fe5e9

SHA256
801d4bbd5bdd9780c9cfb969b61adb16fe20709798a01880fa8cdaf61a56f6d4

SHA512
739e9429dc5c4f1ad118495600697778d5246965de9200666bd6c3d947fd34a77f5e3fd669033e370e82dd83d821e9ae9ee8d8d3d93ab28780c21fdbb97efb25

Download Submit
memory/2036-10-0x000007FEF56F0000-0x000007FEF60DC000-memory.dmp

Filesize
9.9MB

Download
memory/2036-8-0x0000000000170000-0x0000000000494000-memory.dmp

Filesize
3.1MB

Download
memory/2036-11-0x000000001B190000-0x000000001B210000-memory.dmp

Filesize
512KB

Download
memory/2036-12-0x000007FEF56F0000-0x000007FEF60DC000-memory.dmp

Filesize
9.9MB

Download
memory/2036-13-0x000000001B190000-0x000000001B210000-memory.dmp

Filesize
512KB

Download
memory/3008-0-0x00000000003C0000-0x00000000006E4000-memory.dmp

Filesize
3.1MB

Download
memory/3008-1-0x000007FEF56F0000-0x000007FEF60DC000-memory.dmp

Filesize
9.9MB

Download
memory/3008-2-0x000000001B2A0000-0x000000001B320000-memory.dmp

Filesize
512KB

Download
memory/3008-9-0x000007FEF56F0000-0x000007FEF60DC000-memory.dmp

Filesize
9.9MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

Replay Monitor

Loading Replay Monitor...

Downloads