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 3 IoCs

resource	yara_rule
behavioral1/memory/2876-1-0x0000000000090000-0x00000000000EE000-memory.dmp	family_quasar
behavioral1/files/0x0036000000013a3a-5.dat	family_quasar
behavioral1/memory/2664-11-0x00000000009F0000-0x0000000000A4E000-memory.dmp	family_quasar

Executes dropped EXE 1 IoCs

pid	Process
2664	bgfd.exe

Loads dropped DLL 1 IoCs

pid	Process
2876	43738a30c4074ca0bef77f528fb75fb1_JaffaCakes118.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.

flow	ioc
2	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

pid	Process
2672	schtasks.exe
2512	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2876	43738a30c4074ca0bef77f528fb75fb1_JaffaCakes118.exe
Token: SeDebugPrivilege	2664	bgfd.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2664	bgfd.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2876 wrote to memory of 2672	2876	43738a30c4074ca0bef77f528fb75fb1_JaffaCakes118.exe	29
PID 2876 wrote to memory of 2672	2876	43738a30c4074ca0bef77f528fb75fb1_JaffaCakes118.exe	29
PID 2876 wrote to memory of 2672	2876	43738a30c4074ca0bef77f528fb75fb1_JaffaCakes118.exe	29
PID 2876 wrote to memory of 2672	2876	43738a30c4074ca0bef77f528fb75fb1_JaffaCakes118.exe	29
PID 2876 wrote to memory of 2664	2876	43738a30c4074ca0bef77f528fb75fb1_JaffaCakes118.exe	31
PID 2876 wrote to memory of 2664	2876	43738a30c4074ca0bef77f528fb75fb1_JaffaCakes118.exe	31
PID 2876 wrote to memory of 2664	2876	43738a30c4074ca0bef77f528fb75fb1_JaffaCakes118.exe	31
PID 2876 wrote to memory of 2664	2876	43738a30c4074ca0bef77f528fb75fb1_JaffaCakes118.exe	31
PID 2664 wrote to memory of 2512	2664	bgfd.exe	32
PID 2664 wrote to memory of 2512	2664	bgfd.exe	32
PID 2664 wrote to memory of 2512	2664	bgfd.exe	32
PID 2664 wrote to memory of 2512	2664	bgfd.exe	32

C:\Users\Admin\AppData\Local\Temp\43738a30c4074ca0bef77f528fb75fb1_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\43738a30c4074ca0bef77f528fb75fb1_JaffaCakes118.exe"
1⤵
- Loads dropped DLL
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2876
- 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:2672
- 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:2664
- - 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:2512

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

\Users\Admin\AppData\Roaming\9807t43nfidyg\bgfd.exe

Filesize
349KB

MD5
43738a30c4074ca0bef77f528fb75fb1

SHA1
4197ff900d723691b0b33a924b6b34ad4dc15f33

SHA256
212755a6fea93a698fcc12d08bdb6531c113377e8ddeef0c3185e54f3d2576ac

SHA512
86d38ae3a245c155dfaef3a0928923bbccb338daae365b896c672aa98634376bfb113bb45c1bca68f361fc9cce964e1c12ab9971319779ba6f88c84370c2b259

Download Submit
memory/2664-13-0x0000000074C30000-0x000000007531E000-memory.dmp

Filesize
6.9MB

Download
memory/2664-12-0x0000000074C30000-0x000000007531E000-memory.dmp

Filesize
6.9MB

Download
memory/2664-11-0x00000000009F0000-0x0000000000A4E000-memory.dmp

Filesize
376KB

Download
memory/2664-15-0x0000000074C30000-0x000000007531E000-memory.dmp

Filesize
6.9MB

Download
memory/2876-0-0x0000000074C3E000-0x0000000074C3F000-memory.dmp

Filesize
4KB

Download
memory/2876-1-0x0000000000090000-0x00000000000EE000-memory.dmp

Filesize
376KB

Download
memory/2876-2-0x0000000074C30000-0x000000007531E000-memory.dmp

Filesize
6.9MB

Download
memory/2876-10-0x0000000074C30000-0x000000007531E000-memory.dmp

Filesize
6.9MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads