quasar | 680caf0e30b204544971d053b635ed0e3f1dee3332d9eab8a08b3f04cd7ecd75

General

Target

Heart Sender V5.0.exe
Size

439KB
MD5

8f808bb54b422500304dfc68b87198fc
SHA1

24ebeb615f0bdcaa3980722100d6fc42111b62ec
SHA256

680caf0e30b204544971d053b635ed0e3f1dee3332d9eab8a08b3f04cd7ecd75
SHA512

46ce4cde81607819e360b0efc424c4b5602c7515661a88e6a0d66cd9e88dcc68219f0a85200e6c40cc34bcac0e5ab652e6db4b4b1c1b913ad351061dae880e99
SSDEEP

6144:vwLRSjIXAnZQel5w7T4P5Kq+SMv0VGb7bDcllbkuVB8:v/4AZrg7g9zVGkllbko

Score

10^/10

quasar revengerat office04 spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.0.0

Botnet

Office04

C2

67.213.221.18:7812

Mutex

KFoYp486ql6lO6U0qI

Attributes

encryption_key
OtItMK9boIZNOQTejUzg
install_name
Windows Security.exe
log_directory
Logs
reconnect_delay
3000
startup_key
Windows Update
subdirectory
Windows Services

Signatures

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

Quasar payload 12 IoCs

Processes:

resource	yara_rule
\Users\Admin\AppData\Roaming\Windows Security.exe	family_quasar
C:\Users\Admin\AppData\Roaming\Windows Security.exe	family_quasar
C:\Users\Admin\AppData\Roaming\Windows Security.exe	family_quasar
behavioral1/memory/2000-61-0x0000000000E90000-0x0000000000EDE000-memory.dmp	family_quasar
behavioral1/memory/2000-62-0x0000000000C50000-0x0000000000C90000-memory.dmp	family_quasar
C:\Users\Admin\AppData\Roaming\Windows Services\Windows Security.exe	family_quasar
\Users\Admin\AppData\Roaming\Windows Services\Windows Security.exe	family_quasar
C:\Users\Admin\AppData\Roaming\Windows Services\Windows Security.exe	family_quasar
C:\Users\Admin\AppData\Roaming\Windows Services\Windows Security.exe	family_quasar
behavioral1/memory/328-70-0x0000000000C40000-0x0000000000C8E000-memory.dmp	family_quasar
behavioral1/memory/328-71-0x0000000004900000-0x0000000004940000-memory.dmp	family_quasar
behavioral1/memory/328-73-0x0000000004900000-0x0000000004940000-memory.dmp	family_quasar

RevengeRAT
Remote-access trojan with a wide range of capabilities.
trojan revengerat
Executes dropped EXE 2 IoCs

Processes:

Windows Security.exeWindows Security.exe

pid process

2000 Windows Security.exe
328 Windows Security.exe
Loads dropped DLL 2 IoCs

Processes:

Heart Sender V5.0.exeWindows Security.exe

pid process

1376 Heart Sender V5.0.exe
2000 Windows Security.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

1 ip-api.com
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

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
T1053

Processes:

schtasks.exeschtasks.exe

pid process

1880 schtasks.exe
688 schtasks.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

Windows Security.exeWindows Security.exe

description pid process

Token: SeDebugPrivilege 2000 Windows Security.exe
Token: SeDebugPrivilege 328 Windows Security.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

Windows Security.exe

pid process

328 Windows Security.exe

pid	process
2000	Windows Security.exe
328	Windows Security.exe

pid	process
1376	Heart Sender V5.0.exe
2000	Windows Security.exe

flow	ioc
1	ip-api.com

pid	process
1880	schtasks.exe
688	schtasks.exe

description	pid	process
Token: SeDebugPrivilege	2000	Windows Security.exe
Token: SeDebugPrivilege	328	Windows Security.exe

pid	process
328	Windows Security.exe

Suspicious use of WriteProcessMemory 16 IoCs

Processes:

Heart Sender V5.0.exeWindows Security.exeWindows Security.exe

description	pid	process	target process
PID 1376 wrote to memory of 2000	1376	Heart Sender V5.0.exe	Windows Security.exe
PID 1376 wrote to memory of 2000	1376	Heart Sender V5.0.exe	Windows Security.exe
PID 1376 wrote to memory of 2000	1376	Heart Sender V5.0.exe	Windows Security.exe
PID 1376 wrote to memory of 2000	1376	Heart Sender V5.0.exe	Windows Security.exe
PID 2000 wrote to memory of 1880	2000	Windows Security.exe	schtasks.exe
PID 2000 wrote to memory of 1880	2000	Windows Security.exe	schtasks.exe
PID 2000 wrote to memory of 1880	2000	Windows Security.exe	schtasks.exe
PID 2000 wrote to memory of 1880	2000	Windows Security.exe	schtasks.exe
PID 2000 wrote to memory of 328	2000	Windows Security.exe	Windows Security.exe
PID 2000 wrote to memory of 328	2000	Windows Security.exe	Windows Security.exe
PID 2000 wrote to memory of 328	2000	Windows Security.exe	Windows Security.exe
PID 2000 wrote to memory of 328	2000	Windows Security.exe	Windows Security.exe
PID 328 wrote to memory of 688	328	Windows Security.exe	schtasks.exe
PID 328 wrote to memory of 688	328	Windows Security.exe	schtasks.exe
PID 328 wrote to memory of 688	328	Windows Security.exe	schtasks.exe
PID 328 wrote to memory of 688	328	Windows Security.exe	schtasks.exe

C:\Users\Admin\AppData\Local\Temp\Heart Sender V5.0.exe
"C:\Users\Admin\AppData\Local\Temp\Heart Sender V5.0.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1376

C:\Users\Admin\AppData\Roaming\Windows Security.exe
"C:\Users\Admin\AppData\Roaming\Windows Security.exe"
2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2000

C:\Windows\SysWOW64\schtasks.exe
"schtasks" /create /tn "Windows Update" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\Windows Security.exe" /rl HIGHEST /f
3⤵
- Creates scheduled task(s)
PID:1880

C:\Users\Admin\AppData\Roaming\Windows Services\Windows Security.exe
"C:\Users\Admin\AppData\Roaming\Windows Services\Windows Security.exe"
3⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:328

C:\Windows\SysWOW64\schtasks.exe
"schtasks" /create /tn "Windows Update" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\Windows Services\Windows Security.exe" /rl HIGHEST /f
4⤵
- Creates scheduled task(s)
PID:688

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Roaming\Windows Security.exe
Filesize
289KB

MD5
9ed927a589ceb0eb1cd72036f72b65ac

SHA1
b48d9257d0c902736c897a4d0cdf430939ff47af

SHA256
ed1545bda10c94c007b0d75b7895d10548fa096ba1b984b519737dfc6f307f3a

SHA512
282871bd88691162e3aaa5f679049e991ecc3ea605fcb8a63eac284f93e2c499a7a36bae26f584675de5601fc72710eb464068f4d258bf7184cb1da2fe573675

Download Submit
C:\Users\Admin\AppData\Roaming\Windows Security.exe
Filesize
289KB

MD5
9ed927a589ceb0eb1cd72036f72b65ac

SHA1
b48d9257d0c902736c897a4d0cdf430939ff47af

SHA256
ed1545bda10c94c007b0d75b7895d10548fa096ba1b984b519737dfc6f307f3a

SHA512
282871bd88691162e3aaa5f679049e991ecc3ea605fcb8a63eac284f93e2c499a7a36bae26f584675de5601fc72710eb464068f4d258bf7184cb1da2fe573675

Download Submit
C:\Users\Admin\AppData\Roaming\Windows Services\Windows Security.exe
Filesize
289KB

MD5
9ed927a589ceb0eb1cd72036f72b65ac

SHA1
b48d9257d0c902736c897a4d0cdf430939ff47af

SHA256
ed1545bda10c94c007b0d75b7895d10548fa096ba1b984b519737dfc6f307f3a

SHA512
282871bd88691162e3aaa5f679049e991ecc3ea605fcb8a63eac284f93e2c499a7a36bae26f584675de5601fc72710eb464068f4d258bf7184cb1da2fe573675

Download Submit
C:\Users\Admin\AppData\Roaming\Windows Services\Windows Security.exe
Filesize
289KB

MD5
9ed927a589ceb0eb1cd72036f72b65ac

SHA1
b48d9257d0c902736c897a4d0cdf430939ff47af

SHA256
ed1545bda10c94c007b0d75b7895d10548fa096ba1b984b519737dfc6f307f3a

SHA512
282871bd88691162e3aaa5f679049e991ecc3ea605fcb8a63eac284f93e2c499a7a36bae26f584675de5601fc72710eb464068f4d258bf7184cb1da2fe573675

Download Submit
C:\Users\Admin\AppData\Roaming\Windows Services\Windows Security.exe
Filesize
289KB

MD5
9ed927a589ceb0eb1cd72036f72b65ac

SHA1
b48d9257d0c902736c897a4d0cdf430939ff47af

SHA256
ed1545bda10c94c007b0d75b7895d10548fa096ba1b984b519737dfc6f307f3a

SHA512
282871bd88691162e3aaa5f679049e991ecc3ea605fcb8a63eac284f93e2c499a7a36bae26f584675de5601fc72710eb464068f4d258bf7184cb1da2fe573675

Download Submit
\Users\Admin\AppData\Roaming\Windows Security.exe
Filesize
289KB

MD5
9ed927a589ceb0eb1cd72036f72b65ac

SHA1
b48d9257d0c902736c897a4d0cdf430939ff47af

SHA256
ed1545bda10c94c007b0d75b7895d10548fa096ba1b984b519737dfc6f307f3a

SHA512
282871bd88691162e3aaa5f679049e991ecc3ea605fcb8a63eac284f93e2c499a7a36bae26f584675de5601fc72710eb464068f4d258bf7184cb1da2fe573675

Download Submit
\Users\Admin\AppData\Roaming\Windows Services\Windows Security.exe
Filesize
289KB

MD5
9ed927a589ceb0eb1cd72036f72b65ac

SHA1
b48d9257d0c902736c897a4d0cdf430939ff47af

SHA256
ed1545bda10c94c007b0d75b7895d10548fa096ba1b984b519737dfc6f307f3a

SHA512
282871bd88691162e3aaa5f679049e991ecc3ea605fcb8a63eac284f93e2c499a7a36bae26f584675de5601fc72710eb464068f4d258bf7184cb1da2fe573675

Download Submit
memory/328-70-0x0000000000C40000-0x0000000000C8E000-memory.dmp

Filesize
312KB

Download
memory/328-71-0x0000000004900000-0x0000000004940000-memory.dmp

Filesize
256KB

Download
memory/328-73-0x0000000004900000-0x0000000004940000-memory.dmp

Filesize
256KB

Download
memory/2000-61-0x0000000000E90000-0x0000000000EDE000-memory.dmp

Filesize
312KB

Download
memory/2000-62-0x0000000000C50000-0x0000000000C90000-memory.dmp

Filesize
256KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

Loading Replay Monitor...

Downloads