quasar | 0d4777cd136637a6a622af6891450a910bfb908743c1586b987ee75f0d923c9f

General

Target

0d4777cd136637a6a622af6891450a910bfb908743c1586b987ee75f0d923c9f.exe
Size

877KB
MD5

af2cca9e175c1e73fdc927423bf34063
SHA1

9fb1313901e0ac98a4c5aa3da0c0223b4bfca1f2
SHA256

0d4777cd136637a6a622af6891450a910bfb908743c1586b987ee75f0d923c9f
SHA512

8d57d681ad9bfb772fdf74b05a5012e0cac168db3265864de1b9898ac0126b8ac969a273060275309ab6e99087acfc7ea48a2c2b8d2bc70989ef546d98ab9b9f
SSDEEP

12288:7FY7UCaIsX+aC+fwRDV4gF03IFdfQeArznBKau8i1ozAq5uZCTN2E/Ep6A4W/89m:7FKraaaNwC3ktQeAwVGB5uaZ/of3

Score

10^/10

quasar aoy discovery spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.3.0.0

Botnet

AOY

C2

87.120.120.27:61540

127.0.0.1:61540

87.121.86.205:61541

Mutex

QSR_MUTEX_NOCv4TURf46HbVbxyc

Attributes

encryption_key
fVsndNhImy9VosyZSQbQ
install_name
updates.exe
log_directory
Logs
reconnect_delay
4000
startup_key
Windows Update
subdirectory
Windows

Signatures

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

Quasar payload 1 IoCs

resource	yara_rule
behavioral2/memory/2584-9-0x0000000000400000-0x000000000045E000-memory.dmp	family_quasar

Executes dropped EXE 2 IoCs

pid	Process
2508	updates.exe
3712	updates.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
7	ip-api.com

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1516 set thread context of 2584	1516	0d4777cd136637a6a622af6891450a910bfb908743c1586b987ee75f0d923c9f.exe	84
PID 2508 set thread context of 3712	2508	updates.exe	89

System Location Discovery: System Language Discovery 1 TTPs 6 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	updates.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	updates.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	0d4777cd136637a6a622af6891450a910bfb908743c1586b987ee75f0d923c9f.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	0d4777cd136637a6a622af6891450a910bfb908743c1586b987ee75f0d923c9f.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
4480	schtasks.exe
216	schtasks.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	1516	0d4777cd136637a6a622af6891450a910bfb908743c1586b987ee75f0d923c9f.exe
Token: SeDebugPrivilege	2584	0d4777cd136637a6a622af6891450a910bfb908743c1586b987ee75f0d923c9f.exe
Token: SeDebugPrivilege	2508	updates.exe
Token: SeDebugPrivilege	3712	updates.exe

Suspicious use of WriteProcessMemory 25 IoCs

description	pid	Process	procid_target
PID 1516 wrote to memory of 2584	1516	0d4777cd136637a6a622af6891450a910bfb908743c1586b987ee75f0d923c9f.exe	84
PID 1516 wrote to memory of 2584	1516	0d4777cd136637a6a622af6891450a910bfb908743c1586b987ee75f0d923c9f.exe	84
PID 1516 wrote to memory of 2584	1516	0d4777cd136637a6a622af6891450a910bfb908743c1586b987ee75f0d923c9f.exe	84
PID 1516 wrote to memory of 2584	1516	0d4777cd136637a6a622af6891450a910bfb908743c1586b987ee75f0d923c9f.exe	84
PID 1516 wrote to memory of 2584	1516	0d4777cd136637a6a622af6891450a910bfb908743c1586b987ee75f0d923c9f.exe	84
PID 1516 wrote to memory of 2584	1516	0d4777cd136637a6a622af6891450a910bfb908743c1586b987ee75f0d923c9f.exe	84
PID 1516 wrote to memory of 2584	1516	0d4777cd136637a6a622af6891450a910bfb908743c1586b987ee75f0d923c9f.exe	84
PID 1516 wrote to memory of 2584	1516	0d4777cd136637a6a622af6891450a910bfb908743c1586b987ee75f0d923c9f.exe	84
PID 2584 wrote to memory of 4480	2584	0d4777cd136637a6a622af6891450a910bfb908743c1586b987ee75f0d923c9f.exe	86
PID 2584 wrote to memory of 4480	2584	0d4777cd136637a6a622af6891450a910bfb908743c1586b987ee75f0d923c9f.exe	86
PID 2584 wrote to memory of 4480	2584	0d4777cd136637a6a622af6891450a910bfb908743c1586b987ee75f0d923c9f.exe	86
PID 2584 wrote to memory of 2508	2584	0d4777cd136637a6a622af6891450a910bfb908743c1586b987ee75f0d923c9f.exe	88
PID 2584 wrote to memory of 2508	2584	0d4777cd136637a6a622af6891450a910bfb908743c1586b987ee75f0d923c9f.exe	88
PID 2584 wrote to memory of 2508	2584	0d4777cd136637a6a622af6891450a910bfb908743c1586b987ee75f0d923c9f.exe	88
PID 2508 wrote to memory of 3712	2508	updates.exe	89
PID 2508 wrote to memory of 3712	2508	updates.exe	89
PID 2508 wrote to memory of 3712	2508	updates.exe	89
PID 2508 wrote to memory of 3712	2508	updates.exe	89
PID 2508 wrote to memory of 3712	2508	updates.exe	89
PID 2508 wrote to memory of 3712	2508	updates.exe	89
PID 2508 wrote to memory of 3712	2508	updates.exe	89
PID 2508 wrote to memory of 3712	2508	updates.exe	89
PID 3712 wrote to memory of 216	3712	updates.exe	90
PID 3712 wrote to memory of 216	3712	updates.exe	90
PID 3712 wrote to memory of 216	3712	updates.exe	90

C:\Users\Admin\AppData\Local\Temp\0d4777cd136637a6a622af6891450a910bfb908743c1586b987ee75f0d923c9f.exe
"C:\Users\Admin\AppData\Local\Temp\0d4777cd136637a6a622af6891450a910bfb908743c1586b987ee75f0d923c9f.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1516
- C:\Users\Admin\AppData\Local\Temp\0d4777cd136637a6a622af6891450a910bfb908743c1586b987ee75f0d923c9f.exe
  C:\Users\Admin\AppData\Local\Temp\0d4777cd136637a6a622af6891450a910bfb908743c1586b987ee75f0d923c9f.exe
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2584
- - C:\Windows\SysWOW64\schtasks.exe
    "schtasks" /create /tn "Windows Update" /sc ONLOGON /tr "C:\Users\Admin\AppData\Local\Temp\0d4777cd136637a6a622af6891450a910bfb908743c1586b987ee75f0d923c9f.exe" /rl HIGHEST /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:4480
- - C:\Users\Admin\AppData\Roaming\Windows\updates.exe
    "C:\Users\Admin\AppData\Roaming\Windows\updates.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:2508
  - - C:\Users\Admin\AppData\Roaming\Windows\updates.exe
      C:\Users\Admin\AppData\Roaming\Windows\updates.exe
      4⤵
      Executes dropped EXE
      System Location Discovery: System Language Discovery
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of WriteProcessMemory
      PID:3712
    - - C:\Windows\SysWOW64\schtasks.exe
        
        "schtasks" /create /tn "Windows Update" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\Windows\updates.exe" /rl HIGHEST /f
        5⤵
        System Location Discovery: System Language Discovery
        Scheduled Task/Job: Scheduled Task
        
        PID:216

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Credential Access

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\0d4777cd136637a6a622af6891450a910bfb908743c1586b987ee75f0d923c9f.exe.log

Filesize
706B

MD5
d95c58e609838928f0f49837cab7dfd2

SHA1
55e7139a1e3899195b92ed8771d1ca2c7d53c916

SHA256
0407c814aef0d62aec7fd39b7c2f614746f0d8ff41f8ef957736f520f14b0339

SHA512
405310b29a833604c6627063bfdcf055a197e01f633ef21da238f1a6415a02e21315d689b4a6669db23e82152bed6f3492afb60963e6b2a0e9bb2ac09a480b5d

Download Submit
C:\Users\Admin\AppData\Roaming\Windows\updates.exe

Filesize
877KB

MD5
af2cca9e175c1e73fdc927423bf34063

SHA1
9fb1313901e0ac98a4c5aa3da0c0223b4bfca1f2

SHA256
0d4777cd136637a6a622af6891450a910bfb908743c1586b987ee75f0d923c9f

SHA512
8d57d681ad9bfb772fdf74b05a5012e0cac168db3265864de1b9898ac0126b8ac969a273060275309ab6e99087acfc7ea48a2c2b8d2bc70989ef546d98ab9b9f

Download Submit
memory/1516-5-0x000000000A870000-0x000000000A90C000-memory.dmp

Filesize
624KB

Download
memory/1516-12-0x0000000074990000-0x0000000075140000-memory.dmp

Filesize
7.7MB

Download
memory/1516-4-0x000000000A770000-0x000000000A876000-memory.dmp

Filesize
1.0MB

Download
memory/1516-0-0x000000007499E000-0x000000007499F000-memory.dmp

Filesize
4KB

Download
memory/1516-6-0x000000000AEC0000-0x000000000B464000-memory.dmp

Filesize
5.6MB

Download
memory/1516-7-0x000000000A9B0000-0x000000000AA42000-memory.dmp

Filesize
584KB

Download
memory/1516-8-0x0000000005090000-0x0000000005096000-memory.dmp

Filesize
24KB

Download
memory/1516-3-0x0000000074990000-0x0000000075140000-memory.dmp

Filesize
7.7MB

Download
memory/1516-2-0x0000000004F60000-0x0000000004F66000-memory.dmp

Filesize
24KB

Download
memory/1516-1-0x0000000000550000-0x0000000000632000-memory.dmp

Filesize
904KB

Download
memory/2508-22-0x0000000074990000-0x0000000075140000-memory.dmp

Filesize
7.7MB

Download
memory/2508-24-0x0000000074990000-0x0000000075140000-memory.dmp

Filesize
7.7MB

Download
memory/2508-29-0x0000000074990000-0x0000000075140000-memory.dmp

Filesize
7.7MB

Download
memory/2584-14-0x0000000074990000-0x0000000075140000-memory.dmp

Filesize
7.7MB

Download
memory/2584-15-0x00000000050E0000-0x0000000005146000-memory.dmp

Filesize
408KB

Download
memory/2584-16-0x0000000005670000-0x0000000005682000-memory.dmp

Filesize
72KB

Download
memory/2584-17-0x00000000063A0000-0x00000000063DC000-memory.dmp

Filesize
240KB

Download
memory/2584-13-0x0000000074990000-0x0000000075140000-memory.dmp

Filesize
7.7MB

Download
memory/2584-9-0x0000000000400000-0x000000000045E000-memory.dmp

Filesize
376KB

Download
memory/2584-23-0x0000000074990000-0x0000000075140000-memory.dmp

Filesize
7.7MB

Download
memory/3712-30-0x0000000006410000-0x000000000641A000-memory.dmp

Filesize
40KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads