quasar | cdbc749cebbe862012e78f57d1d391db776a397db2d42f871dd25edeb7055f4e

General

Target

4310aad51c7722f9136cbb0156e16718_JaffaCakes118.exe
Size

348KB
MD5

4310aad51c7722f9136cbb0156e16718
SHA1

fa73a3bbd71a2ba1358a899b1dc0e4fc956bc872
SHA256

cdbc749cebbe862012e78f57d1d391db776a397db2d42f871dd25edeb7055f4e
SHA512

243f71fdfceffd2d437f08df7fd1b37fee42b0a5840187b2785699a4e4aabf87797bde0358c187507b01d6ee632d92ffad8f2f05c6e1df43cc1126c2acbdeb85
SSDEEP

6144:3TNHXf500MdFe4jngKBSb2tDjgL67ugOoLd51ZG:jd50VvndZJ8L6vRLd57G

Score

10^/10

quasar main spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.3.0.0

Botnet

Main

C2

96.8.121.101:1738

Mutex

QSR_MUTEX_y9rJxgpEmlopTsZPRb

Attributes

encryption_key
bVA0J9HzEeCVsbzCPgiY
install_name
svchost.exe
log_directory
Logs
reconnect_delay
3000
startup_key
Quasar Client Startup
subdirectory
windows

Signatures

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

Quasar payload 2 IoCs

Processes:

resource	yara_rule
behavioral2/memory/1788-1-0x0000000000CF0000-0x0000000000D4E000-memory.dmp	family_quasar
C:\Users\Admin\AppData\Roaming\windows\svchost.exe	family_quasar

Executes dropped EXE 1 IoCs

Processes:

svchost.exe

pid process

3052 svchost.exe
Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.

Processes:

flow ioc

9 ip-api.com
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

876 schtasks.exe
748 schtasks.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

4310aad51c7722f9136cbb0156e16718_JaffaCakes118.exesvchost.exe

description pid process

Token: SeDebugPrivilege 1788 4310aad51c7722f9136cbb0156e16718_JaffaCakes118.exe
Token: SeDebugPrivilege 3052 svchost.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

svchost.exe

pid process

3052 svchost.exe

pid	process
3052	svchost.exe

flow	ioc
9	ip-api.com

pid	process
876	schtasks.exe
748	schtasks.exe

description	pid	process
Token: SeDebugPrivilege	1788	4310aad51c7722f9136cbb0156e16718_JaffaCakes118.exe
Token: SeDebugPrivilege	3052	svchost.exe

pid	process
3052	svchost.exe

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

4310aad51c7722f9136cbb0156e16718_JaffaCakes118.exesvchost.exe

description	pid	process	target process
PID 1788 wrote to memory of 876	1788	4310aad51c7722f9136cbb0156e16718_JaffaCakes118.exe	schtasks.exe
PID 1788 wrote to memory of 876	1788	4310aad51c7722f9136cbb0156e16718_JaffaCakes118.exe	schtasks.exe
PID 1788 wrote to memory of 876	1788	4310aad51c7722f9136cbb0156e16718_JaffaCakes118.exe	schtasks.exe
PID 1788 wrote to memory of 3052	1788	4310aad51c7722f9136cbb0156e16718_JaffaCakes118.exe	svchost.exe
PID 1788 wrote to memory of 3052	1788	4310aad51c7722f9136cbb0156e16718_JaffaCakes118.exe	svchost.exe
PID 1788 wrote to memory of 3052	1788	4310aad51c7722f9136cbb0156e16718_JaffaCakes118.exe	svchost.exe
PID 3052 wrote to memory of 748	3052	svchost.exe	schtasks.exe
PID 3052 wrote to memory of 748	3052	svchost.exe	schtasks.exe
PID 3052 wrote to memory of 748	3052	svchost.exe	schtasks.exe

C:\Users\Admin\AppData\Local\Temp\4310aad51c7722f9136cbb0156e16718_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\4310aad51c7722f9136cbb0156e16718_JaffaCakes118.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1788

C:\Windows\SysWOW64\schtasks.exe
"schtasks" /create /tn "Quasar Client Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Local\Temp\4310aad51c7722f9136cbb0156e16718_JaffaCakes118.exe" /rl HIGHEST /f
2⤵
- Creates scheduled task(s)
PID:876

C:\Users\Admin\AppData\Roaming\windows\svchost.exe
"C:\Users\Admin\AppData\Roaming\windows\svchost.exe"
2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3052

C:\Windows\SysWOW64\schtasks.exe
"schtasks" /create /tn "Quasar Client Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\windows\svchost.exe" /rl HIGHEST /f
3⤵
- Creates scheduled task(s)
PID:748

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\windows\svchost.exe

Filesize
348KB

MD5
4310aad51c7722f9136cbb0156e16718

SHA1
fa73a3bbd71a2ba1358a899b1dc0e4fc956bc872

SHA256
cdbc749cebbe862012e78f57d1d391db776a397db2d42f871dd25edeb7055f4e

SHA512
243f71fdfceffd2d437f08df7fd1b37fee42b0a5840187b2785699a4e4aabf87797bde0358c187507b01d6ee632d92ffad8f2f05c6e1df43cc1126c2acbdeb85

Download Submit
memory/1788-6-0x0000000005C80000-0x0000000005C92000-memory.dmp

Filesize
72KB

Download
memory/1788-2-0x0000000005D00000-0x00000000062A4000-memory.dmp

Filesize
5.6MB

Download
memory/1788-3-0x0000000005750000-0x00000000057E2000-memory.dmp

Filesize
584KB

Download
memory/1788-4-0x00000000751F0000-0x00000000759A0000-memory.dmp

Filesize
7.7MB

Download
memory/1788-5-0x00000000057F0000-0x0000000005856000-memory.dmp

Filesize
408KB

Download
memory/1788-0-0x00000000751FE000-0x00000000751FF000-memory.dmp

Filesize
4KB

Download
memory/1788-7-0x0000000006970000-0x00000000069AC000-memory.dmp

Filesize
240KB

Download
memory/1788-1-0x0000000000CF0000-0x0000000000D4E000-memory.dmp

Filesize
376KB

Download
memory/1788-15-0x00000000751F0000-0x00000000759A0000-memory.dmp

Filesize
7.7MB

Download
memory/3052-14-0x00000000751F0000-0x00000000759A0000-memory.dmp

Filesize
7.7MB

Download
memory/3052-17-0x0000000006A00000-0x0000000006A0A000-memory.dmp

Filesize
40KB

Download
memory/3052-18-0x00000000751F0000-0x00000000759A0000-memory.dmp

Filesize
7.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads