quasar | 212755a6fea93a698fcc12d08bdb6531c113377e8ddeef0c3185e54f3d2576ac

General

Target

43738a30c4074ca0bef77f528fb75fb1_JaffaCakes118.exe
Size

349KB
MD5

43738a30c4074ca0bef77f528fb75fb1
SHA1

4197ff900d723691b0b33a924b6b34ad4dc15f33
SHA256

212755a6fea93a698fcc12d08bdb6531c113377e8ddeef0c3185e54f3d2576ac
SHA512

86d38ae3a245c155dfaef3a0928923bbccb338daae365b896c672aa98634376bfb113bb45c1bca68f361fc9cce964e1c12ab9971319779ba6f88c84370c2b259
SSDEEP

6144:9K2J10qdSlEc39HG0qwmaS23MF+zK5rqt5YOqhLbyfdAVo2Vdd0d:9KFjq7c3FzK5rqcOYyKVoWdd0d

Score

10^/10

quasar office04 spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.3.0.0

Botnet

Office04

C2

162.206.16.208:4782

Mutex

QSR_MUTEX_mnskLlemHhwg70HDrH

Attributes

encryption_key
mvXuP4zPWoLOIqtuspGa
install_name
bgfd.exe
log_directory
Logs
reconnect_delay
3000
startup_key
Windows Reg Start
subdirectory
9807t43nfidyg

Signatures

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

Quasar payload 2 IoCs

Processes:

resource	yara_rule
behavioral2/memory/3868-1-0x0000000000020000-0x000000000007E000-memory.dmp	family_quasar
C:\Users\Admin\AppData\Roaming\9807t43nfidyg\bgfd.exe	family_quasar

Executes dropped EXE 1 IoCs

Processes:

bgfd.exe

pid process

724 bgfd.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

50 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

3116 schtasks.exe
872 schtasks.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

43738a30c4074ca0bef77f528fb75fb1_JaffaCakes118.exebgfd.exe

description pid process

Token: SeDebugPrivilege 3868 43738a30c4074ca0bef77f528fb75fb1_JaffaCakes118.exe
Token: SeDebugPrivilege 724 bgfd.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

bgfd.exe

pid process

724 bgfd.exe

pid	process
724	bgfd.exe

flow	ioc
50	ip-api.com

pid	process
3116	schtasks.exe
872	schtasks.exe

description	pid	process
Token: SeDebugPrivilege	3868	43738a30c4074ca0bef77f528fb75fb1_JaffaCakes118.exe
Token: SeDebugPrivilege	724	bgfd.exe

pid	process
724	bgfd.exe

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

43738a30c4074ca0bef77f528fb75fb1_JaffaCakes118.exebgfd.exe

description	pid	process	target process
PID 3868 wrote to memory of 3116	3868	43738a30c4074ca0bef77f528fb75fb1_JaffaCakes118.exe	schtasks.exe
PID 3868 wrote to memory of 3116	3868	43738a30c4074ca0bef77f528fb75fb1_JaffaCakes118.exe	schtasks.exe
PID 3868 wrote to memory of 3116	3868	43738a30c4074ca0bef77f528fb75fb1_JaffaCakes118.exe	schtasks.exe
PID 3868 wrote to memory of 724	3868	43738a30c4074ca0bef77f528fb75fb1_JaffaCakes118.exe	bgfd.exe
PID 3868 wrote to memory of 724	3868	43738a30c4074ca0bef77f528fb75fb1_JaffaCakes118.exe	bgfd.exe
PID 3868 wrote to memory of 724	3868	43738a30c4074ca0bef77f528fb75fb1_JaffaCakes118.exe	bgfd.exe
PID 724 wrote to memory of 872	724	bgfd.exe	schtasks.exe
PID 724 wrote to memory of 872	724	bgfd.exe	schtasks.exe
PID 724 wrote to memory of 872	724	bgfd.exe	schtasks.exe

C:\Users\Admin\AppData\Local\Temp\43738a30c4074ca0bef77f528fb75fb1_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\43738a30c4074ca0bef77f528fb75fb1_JaffaCakes118.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3868

C:\Windows\SysWOW64\schtasks.exe
"schtasks" /create /tn "Windows Reg Start" /sc ONLOGON /tr "C:\Users\Admin\AppData\Local\Temp\43738a30c4074ca0bef77f528fb75fb1_JaffaCakes118.exe" /rl HIGHEST /f
2⤵
- Creates scheduled task(s)
PID:3116

C:\Users\Admin\AppData\Roaming\9807t43nfidyg\bgfd.exe
"C:\Users\Admin\AppData\Roaming\9807t43nfidyg\bgfd.exe"
2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:724

C:\Windows\SysWOW64\schtasks.exe
"schtasks" /create /tn "Windows Reg Start" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\9807t43nfidyg\bgfd.exe" /rl HIGHEST /f
3⤵
- Creates scheduled task(s)
PID:872

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=3808 --field-trial-handle=2264,i,15001568551143786084,90255922961447677,262144 --variations-seed-version /prefetch:8
1⤵
PID:2096

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\9807t43nfidyg\bgfd.exe

Filesize
349KB

MD5
43738a30c4074ca0bef77f528fb75fb1

SHA1
4197ff900d723691b0b33a924b6b34ad4dc15f33

SHA256
212755a6fea93a698fcc12d08bdb6531c113377e8ddeef0c3185e54f3d2576ac

SHA512
86d38ae3a245c155dfaef3a0928923bbccb338daae365b896c672aa98634376bfb113bb45c1bca68f361fc9cce964e1c12ab9971319779ba6f88c84370c2b259

Download Submit
memory/724-22-0x0000000075330000-0x0000000075AE0000-memory.dmp

Filesize
7.7MB

Download
memory/724-21-0x0000000075330000-0x0000000075AE0000-memory.dmp

Filesize
7.7MB

Download
memory/724-20-0x00000000069D0000-0x00000000069DA000-memory.dmp

Filesize
40KB

Download
memory/724-16-0x0000000075330000-0x0000000075AE0000-memory.dmp

Filesize
7.7MB

Download
memory/724-15-0x0000000075330000-0x0000000075AE0000-memory.dmp

Filesize
7.7MB

Download
memory/3868-4-0x0000000004A60000-0x0000000004AF2000-memory.dmp

Filesize
584KB

Download
memory/3868-7-0x0000000075330000-0x0000000075AE0000-memory.dmp

Filesize
7.7MB

Download
memory/3868-8-0x00000000050A0000-0x00000000050B2000-memory.dmp

Filesize
72KB

Download
memory/3868-9-0x0000000005C90000-0x0000000005CCC000-memory.dmp

Filesize
240KB

Download
memory/3868-6-0x0000000004EC0000-0x0000000004F26000-memory.dmp

Filesize
408KB

Download
memory/3868-5-0x0000000075330000-0x0000000075AE0000-memory.dmp

Filesize
7.7MB

Download
memory/3868-0-0x000000007533E000-0x000000007533F000-memory.dmp

Filesize
4KB

Download
memory/3868-18-0x0000000075330000-0x0000000075AE0000-memory.dmp

Filesize
7.7MB

Download
memory/3868-3-0x000000007533E000-0x000000007533F000-memory.dmp

Filesize
4KB

Download
memory/3868-2-0x0000000005100000-0x00000000056A4000-memory.dmp

Filesize
5.6MB

Download
memory/3868-1-0x0000000000020000-0x000000000007E000-memory.dmp

Filesize
376KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads