quasar | 78f9c811e589ff1f25d363080ce8d338fa68f6d2a220b1dd0360e799bbc17a12

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
17-12-2024 03:25

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General

Target

78f9c811e589ff1f25d363080ce8d338fa68f6d2a220b1dd0360e799bbc17a12.exe
Size

502KB
MD5

e3cfe28100238a1001c8cca4af39c574
SHA1

9b80ea180a8f4cec6f787b6b57e51dc10e740f75
SHA256

78f9c811e589ff1f25d363080ce8d338fa68f6d2a220b1dd0360e799bbc17a12
SHA512

511e8a150d6539f555470367933e5f35b00d129d3ed3e97954da57f402d18711dfc86c93acc26f5c2b1b18bd554b8ea4af1ad541cd2564b793acc65251757324
SSDEEP

6144:xTEgdc0YtX7IxUpGREWutr/mrBcgP+cbbWTtySdcE8Ob8F7mvAXi8exPLcTR3y:xTEgdfY2xUT/FxqWTtnMpSvADmcdy

Score

10^/10

quasar svhost spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.0

Botnet

svhost

151.177.61.79:4782

Mutex

a148a6d8-1253-4e62-bc5f-c0242dd62e69

Attributes

encryption_key
5BEC1A8BC6F8F695D1337C51454E0B7F3A4FE968
install_name
svhost.exe
log_directory
Logs
reconnect_delay
3000
startup_key
svhost
subdirectory
svhost

Signatures

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

Quasar payload 2 IoCs

resource	yara_rule
behavioral2/memory/636-1-0x0000000000EA0000-0x0000000000F24000-memory.dmp	family_quasar
behavioral2/files/0x0007000000023cb5-5.dat	family_quasar

Executes dropped EXE 1 IoCs

pid	Process
2784	svhost.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
1904	schtasks.exe
3596	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	636	78f9c811e589ff1f25d363080ce8d338fa68f6d2a220b1dd0360e799bbc17a12.exe
Token: SeDebugPrivilege	2784	svhost.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 636 wrote to memory of 1904	636	78f9c811e589ff1f25d363080ce8d338fa68f6d2a220b1dd0360e799bbc17a12.exe	82
PID 636 wrote to memory of 1904	636	78f9c811e589ff1f25d363080ce8d338fa68f6d2a220b1dd0360e799bbc17a12.exe	82
PID 636 wrote to memory of 2784	636	78f9c811e589ff1f25d363080ce8d338fa68f6d2a220b1dd0360e799bbc17a12.exe	84
PID 636 wrote to memory of 2784	636	78f9c811e589ff1f25d363080ce8d338fa68f6d2a220b1dd0360e799bbc17a12.exe	84
PID 2784 wrote to memory of 3596	2784	svhost.exe	85
PID 2784 wrote to memory of 3596	2784	svhost.exe	85

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Users\Admin\AppData\Local\Temp\78f9c811e589ff1f25d363080ce8d338fa68f6d2a220b1dd0360e799bbc17a12.exe
"C:\Users\Admin\AppData\Local\Temp\78f9c811e589ff1f25d363080ce8d338fa68f6d2a220b1dd0360e799bbc17a12.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:636
- C:\Windows\SYSTEM32\schtasks.exe
  "schtasks" /create /tn "svhost" /sc ONLOGON /tr "C:\Users\Admin\AppData\Local\Temp\78f9c811e589ff1f25d363080ce8d338fa68f6d2a220b1dd0360e799bbc17a12.exe" /rl HIGHEST /f
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:1904
- C:\Users\Admin\AppData\Roaming\svhost\svhost.exe
  "C:\Users\Admin\AppData\Roaming\svhost\svhost.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2784
- - C:\Windows\SYSTEM32\schtasks.exe
    "schtasks" /create /tn "svhost" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\svhost\svhost.exe" /rl HIGHEST /f
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:3596

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\svhost\svhost.exe

Filesize
502KB

MD5
e3cfe28100238a1001c8cca4af39c574

SHA1
9b80ea180a8f4cec6f787b6b57e51dc10e740f75

SHA256
78f9c811e589ff1f25d363080ce8d338fa68f6d2a220b1dd0360e799bbc17a12

SHA512
511e8a150d6539f555470367933e5f35b00d129d3ed3e97954da57f402d18711dfc86c93acc26f5c2b1b18bd554b8ea4af1ad541cd2564b793acc65251757324

Download Submit
memory/636-0-0x00007FFD37FB3000-0x00007FFD37FB5000-memory.dmp

Filesize
8KB

Download
memory/636-1-0x0000000000EA0000-0x0000000000F24000-memory.dmp

Filesize
528KB

Download
memory/636-2-0x00007FFD37FB0000-0x00007FFD38A71000-memory.dmp

Filesize
10.8MB

Download
memory/636-10-0x00007FFD37FB0000-0x00007FFD38A71000-memory.dmp

Filesize
10.8MB

Download
memory/2784-7-0x00007FFD37FB0000-0x00007FFD38A71000-memory.dmp

Filesize
10.8MB

Download
memory/2784-9-0x00007FFD37FB0000-0x00007FFD38A71000-memory.dmp

Filesize
10.8MB

Download
memory/2784-11-0x000000001BAD0000-0x000000001BB20000-memory.dmp

Filesize
320KB

Download
memory/2784-12-0x000000001BBE0000-0x000000001BC92000-memory.dmp

Filesize
712KB

Download
memory/2784-13-0x00007FFD37FB0000-0x00007FFD38A71000-memory.dmp

Filesize
10.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads