quasar | aad9903b9803b9a3e2d6c7677d8eb80f537a3543e26725c48dde5e4c53d518b7

Analysis

max time kernel
150s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
11/03/2024, 18:20

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General

Target

e51e1e4a21fef3fd98784683d80b5a02.exe
Size

1.0MB
MD5

e51e1e4a21fef3fd98784683d80b5a02
SHA1

309790387ec94c189ef94803a87fab335159657a
SHA256

aad9903b9803b9a3e2d6c7677d8eb80f537a3543e26725c48dde5e4c53d518b7
SHA512

329922a8229f6e07f549e8919b4f6e1d60bf7d153b30487c8dde0116d8b31745f88d3f7bf20616d2a88276e8d2c24859e73440a03d4d2ecc08cd207678d84265
SSDEEP

24576:A1QNv9uN9fFNd6AtvbGN/BCfKEPmxKVnRNWg:A1WluN9fZvbGyKFxg

Score

10^/10

quasar pvp2 spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.3.0.0

Botnet

PVP2

clausetestbits.chickenkiller.com:64598

snoetestbits.ignorelist.com:64598

Mutex

QSR_MUTEX_ttz0i8tcYpqYyKkP3l

Attributes

encryption_key
kxBjTYBAXsyGYsjsYZcL
install_name
mcr.exe
log_directory
Logs
reconnect_delay
3000
startup_key
mcs
subdirectory
mcr

Signatures

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

Quasar payload 1 IoCs

resource	yara_rule
behavioral2/memory/2252-9-0x0000000000400000-0x000000000045E000-memory.dmp	family_quasar

Executes dropped EXE 3 IoCs

pid	Process
5112	mcr.exe
3968	mcr.exe
452	mcr.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
27	ip-api.com

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 4004 set thread context of 2252	4004	e51e1e4a21fef3fd98784683d80b5a02.exe	91
PID 4004 set thread context of 4828	4004	e51e1e4a21fef3fd98784683d80b5a02.exe	92
PID 5112 set thread context of 3968	5112	mcr.exe	103
PID 5112 set thread context of 452	5112	mcr.exe	104

Program crash 2 IoCs

pid	pid_target	Process	procid_target
3792	4828	WerFault.exe	92
4732	452	WerFault.exe	104

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
4328	schtasks.exe
548	schtasks.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	4004	e51e1e4a21fef3fd98784683d80b5a02.exe
Token: SeDebugPrivilege	2252	e51e1e4a21fef3fd98784683d80b5a02.exe
Token: SeDebugPrivilege	5112	mcr.exe
Token: SeDebugPrivilege	3968	mcr.exe

Suspicious use of WriteProcessMemory 41 IoCs

description	pid	Process	procid_target
PID 4004 wrote to memory of 2252	4004	e51e1e4a21fef3fd98784683d80b5a02.exe	91
PID 4004 wrote to memory of 2252	4004	e51e1e4a21fef3fd98784683d80b5a02.exe	91
PID 4004 wrote to memory of 2252	4004	e51e1e4a21fef3fd98784683d80b5a02.exe	91
PID 4004 wrote to memory of 2252	4004	e51e1e4a21fef3fd98784683d80b5a02.exe	91
PID 4004 wrote to memory of 2252	4004	e51e1e4a21fef3fd98784683d80b5a02.exe	91
PID 4004 wrote to memory of 2252	4004	e51e1e4a21fef3fd98784683d80b5a02.exe	91
PID 4004 wrote to memory of 2252	4004	e51e1e4a21fef3fd98784683d80b5a02.exe	91
PID 4004 wrote to memory of 2252	4004	e51e1e4a21fef3fd98784683d80b5a02.exe	91
PID 4004 wrote to memory of 4828	4004	e51e1e4a21fef3fd98784683d80b5a02.exe	92
PID 4004 wrote to memory of 4828	4004	e51e1e4a21fef3fd98784683d80b5a02.exe	92
PID 4004 wrote to memory of 4828	4004	e51e1e4a21fef3fd98784683d80b5a02.exe	92
PID 4004 wrote to memory of 4828	4004	e51e1e4a21fef3fd98784683d80b5a02.exe	92
PID 4004 wrote to memory of 4828	4004	e51e1e4a21fef3fd98784683d80b5a02.exe	92
PID 4004 wrote to memory of 4828	4004	e51e1e4a21fef3fd98784683d80b5a02.exe	92
PID 4004 wrote to memory of 4828	4004	e51e1e4a21fef3fd98784683d80b5a02.exe	92
PID 4004 wrote to memory of 4828	4004	e51e1e4a21fef3fd98784683d80b5a02.exe	92
PID 2252 wrote to memory of 548	2252	e51e1e4a21fef3fd98784683d80b5a02.exe	97
PID 2252 wrote to memory of 548	2252	e51e1e4a21fef3fd98784683d80b5a02.exe	97
PID 2252 wrote to memory of 548	2252	e51e1e4a21fef3fd98784683d80b5a02.exe	97
PID 2252 wrote to memory of 5112	2252	e51e1e4a21fef3fd98784683d80b5a02.exe	101
PID 2252 wrote to memory of 5112	2252	e51e1e4a21fef3fd98784683d80b5a02.exe	101
PID 2252 wrote to memory of 5112	2252	e51e1e4a21fef3fd98784683d80b5a02.exe	101
PID 5112 wrote to memory of 3968	5112	mcr.exe	103
PID 5112 wrote to memory of 3968	5112	mcr.exe	103
PID 5112 wrote to memory of 3968	5112	mcr.exe	103
PID 5112 wrote to memory of 3968	5112	mcr.exe	103
PID 5112 wrote to memory of 3968	5112	mcr.exe	103
PID 5112 wrote to memory of 3968	5112	mcr.exe	103
PID 5112 wrote to memory of 3968	5112	mcr.exe	103
PID 5112 wrote to memory of 3968	5112	mcr.exe	103
PID 5112 wrote to memory of 452	5112	mcr.exe	104
PID 5112 wrote to memory of 452	5112	mcr.exe	104
PID 5112 wrote to memory of 452	5112	mcr.exe	104
PID 5112 wrote to memory of 452	5112	mcr.exe	104
PID 5112 wrote to memory of 452	5112	mcr.exe	104
PID 5112 wrote to memory of 452	5112	mcr.exe	104
PID 5112 wrote to memory of 452	5112	mcr.exe	104
PID 5112 wrote to memory of 452	5112	mcr.exe	104
PID 3968 wrote to memory of 4328	3968	mcr.exe	108
PID 3968 wrote to memory of 4328	3968	mcr.exe	108
PID 3968 wrote to memory of 4328	3968	mcr.exe	108

C:\Users\Admin\AppData\Local\Temp\e51e1e4a21fef3fd98784683d80b5a02.exe
"C:\Users\Admin\AppData\Local\Temp\e51e1e4a21fef3fd98784683d80b5a02.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4004
- C:\Users\Admin\AppData\Local\Temp\e51e1e4a21fef3fd98784683d80b5a02.exe
  C:\Users\Admin\AppData\Local\Temp\e51e1e4a21fef3fd98784683d80b5a02.exe
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2252
- - C:\Windows\SysWOW64\schtasks.exe
    "schtasks" /create /tn "mcs" /sc ONLOGON /tr "C:\Users\Admin\AppData\Local\Temp\e51e1e4a21fef3fd98784683d80b5a02.exe" /rl HIGHEST /f
    3⤵
    - Creates scheduled task(s)
    PID:548
- - C:\Users\Admin\AppData\Roaming\mcr\mcr.exe
    "C:\Users\Admin\AppData\Roaming\mcr\mcr.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:5112
  - - C:\Users\Admin\AppData\Roaming\mcr\mcr.exe
      C:\Users\Admin\AppData\Roaming\mcr\mcr.exe
      4⤵
      Executes dropped EXE
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of WriteProcessMemory
      PID:3968
    - - C:\Windows\SysWOW64\schtasks.exe
        
        "schtasks" /create /tn "mcs" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\mcr\mcr.exe" /rl HIGHEST /f
        5⤵
        Creates scheduled task(s)
        
        PID:4328
  - - C:\Users\Admin\AppData\Roaming\mcr\mcr.exe
      C:\Users\Admin\AppData\Roaming\mcr\mcr.exe
      4⤵
      Executes dropped EXE
      PID:452
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 452 -s 80
        5⤵
        Program crash
        
        PID:4732
- C:\Users\Admin\AppData\Local\Temp\e51e1e4a21fef3fd98784683d80b5a02.exe
  C:\Users\Admin\AppData\Local\Temp\e51e1e4a21fef3fd98784683d80b5a02.exe
  2⤵
  PID:4828
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4828 -s 80
    3⤵
    - Program crash
    PID:3792

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4828 -ip 4828
1⤵
PID:4760

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 452 -ip 452
1⤵
PID:3304

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Persistence

Scheduled Task/Job

T1053

Privilege Escalation

Scheduled Task/Job

T1053

Defense Evasion

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\e51e1e4a21fef3fd98784683d80b5a02.exe.log

Filesize
706B

MD5
d95c58e609838928f0f49837cab7dfd2

SHA1
55e7139a1e3899195b92ed8771d1ca2c7d53c916

SHA256
0407c814aef0d62aec7fd39b7c2f614746f0d8ff41f8ef957736f520f14b0339

SHA512
405310b29a833604c6627063bfdcf055a197e01f633ef21da238f1a6415a02e21315d689b4a6669db23e82152bed6f3492afb60963e6b2a0e9bb2ac09a480b5d

Download Submit
C:\Users\Admin\AppData\Roaming\mcr\mcr.exe

Filesize
448KB

MD5
389fadc4ec9a4a65c060a63417f11f80

SHA1
f5df45a010e8376de2122ad69b534afc8277bd9b

SHA256
82367d8cf6caca8e792fb13fd51bc4ee26137459ecaa655ed7e1aa464b3d9bf1

SHA512
e1dadbc2d382859b3f26124e5d8cb8d1dcd057bc0d7a46fd795b5e7efeafafbc72bd2a20ab3698d52e93845590d4b27b5bce291edb745e781d119d3313570d03

Download Submit
C:\Users\Admin\AppData\Roaming\mcr\mcr.exe

Filesize
1.0MB

MD5
e51e1e4a21fef3fd98784683d80b5a02

SHA1
309790387ec94c189ef94803a87fab335159657a

SHA256
aad9903b9803b9a3e2d6c7677d8eb80f537a3543e26725c48dde5e4c53d518b7

SHA512
329922a8229f6e07f549e8919b4f6e1d60bf7d153b30487c8dde0116d8b31745f88d3f7bf20616d2a88276e8d2c24859e73440a03d4d2ecc08cd207678d84265

Download Submit
memory/2252-9-0x0000000000400000-0x000000000045E000-memory.dmp

Filesize
376KB

Download
memory/2252-24-0x0000000074F60000-0x0000000075710000-memory.dmp

Filesize
7.7MB

Download
memory/2252-17-0x0000000006960000-0x000000000699C000-memory.dmp

Filesize
240KB

Download
memory/2252-12-0x0000000074F60000-0x0000000075710000-memory.dmp

Filesize
7.7MB

Download
memory/2252-14-0x0000000005430000-0x0000000005440000-memory.dmp

Filesize
64KB

Download
memory/2252-15-0x0000000005260000-0x00000000052C6000-memory.dmp

Filesize
408KB

Download
memory/2252-16-0x00000000063E0000-0x00000000063F2000-memory.dmp

Filesize
72KB

Download
memory/3968-34-0x0000000004EC0000-0x0000000004ED0000-memory.dmp

Filesize
64KB

Download
memory/3968-32-0x0000000074F60000-0x0000000075710000-memory.dmp

Filesize
7.7MB

Download
memory/3968-35-0x0000000006410000-0x000000000641A000-memory.dmp

Filesize
40KB

Download
memory/3968-36-0x0000000074F60000-0x0000000075710000-memory.dmp

Filesize
7.7MB

Download
memory/3968-37-0x0000000004EC0000-0x0000000004ED0000-memory.dmp

Filesize
64KB

Download
memory/4004-7-0x000000000DD50000-0x000000000DDE2000-memory.dmp

Filesize
584KB

Download
memory/4004-13-0x0000000074F60000-0x0000000075710000-memory.dmp

Filesize
7.7MB

Download
memory/4004-8-0x0000000004A00000-0x0000000004A06000-memory.dmp

Filesize
24KB

Download
memory/4004-0-0x0000000000480000-0x000000000058A000-memory.dmp

Filesize
1.0MB

Download
memory/4004-6-0x000000000E300000-0x000000000E8A4000-memory.dmp

Filesize
5.6MB

Download
memory/4004-5-0x000000000DCB0000-0x000000000DD4C000-memory.dmp

Filesize
624KB

Download
memory/4004-4-0x000000000DB00000-0x000000000DC18000-memory.dmp

Filesize
1.1MB

Download
memory/4004-3-0x0000000004F80000-0x0000000004F90000-memory.dmp

Filesize
64KB

Download
memory/4004-2-0x0000000001090000-0x0000000001096000-memory.dmp

Filesize
24KB

Download
memory/4004-1-0x0000000074F60000-0x0000000075710000-memory.dmp

Filesize
7.7MB

Download
memory/5112-25-0x0000000074F60000-0x0000000075710000-memory.dmp

Filesize
7.7MB

Download
memory/5112-26-0x0000000004E00000-0x0000000004E10000-memory.dmp

Filesize
64KB

Download
memory/5112-33-0x0000000074F60000-0x0000000075710000-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