quasar | d0c4045c70a0822806a4e56d7883821cd2c19362f1cfed3bcbdb1e1b8eb15234

Analysis

max time kernel
212s
max time network
300s
platform
windows11-21h2_x64
resource
win11-20240426-en
resource tags

arch:x64arch:x86image:win11-20240426-enlocale:en-usos:windows11-21h2-x64system
submitted
27/05/2024, 23:25

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General

Target
New.exe
Size 409KB
Sample240527-3ememafa86
SHA256 d0c4045c70a0822806a4e56d7883821cd2c19362f1cfed3bcbdb1e1b8eb15234
MD5 cf570b21f42f0ce411b7c9961068931e
SHA1 f92aa688a1dbd64a4585ecfe80a9c2d7f408c57d
SHA512 de9dce8300656cd8531569011d043373193cbda125b738e66a5bf107178b48781d6dc88eea696b2074c352a1bf56a4693cfae62e668993ac24ce18aebfdcd684
SSDEEP 12288:jpyJcC+PgUUboV2hShYoyTyrIh9eqh6bIK+Pz9:9wd+Y2IweyA9eqkMZ
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

quasar video spyware trojan

Malware Config

Extracted

Family

quasar

Version

3.1.5

Botnet

Video

runderscore00-25501.portmap.host:25501

Mutex

$Sxr-oWTh3ZS9htfe80iIl5

Attributes

encryption_key
zK8u0rpHf4TJzGf65Flt
install_name
Win11.exe
log_directory
$sxr-Logs
reconnect_delay
3000
startup_key
Windows 11 Boot
subdirectory
Win11

Signatures

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

Quasar payload 1 IoCs

resource	yara_rule
behavioral2/memory/2740-1-0x0000000000C50000-0x0000000000CBC000-memory.dmp	family_quasar

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
1	ip-api.com

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Creates scheduled task(s) 1 TTPs 1 IoCs

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

persistence

Scheduled Task/Job

T1053

pid	Process
4648	SCHTASKS.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
3992	PING.EXE

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2740	New.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2740	New.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2740 wrote to memory of 3556	2740	New.exe	78
PID 2740 wrote to memory of 3556	2740	New.exe	78
PID 2740 wrote to memory of 3556	2740	New.exe	78
PID 3556 wrote to memory of 4720	3556	cmd.exe	80
PID 3556 wrote to memory of 4720	3556	cmd.exe	80
PID 3556 wrote to memory of 4720	3556	cmd.exe	80
PID 3556 wrote to memory of 3992	3556	cmd.exe	81
PID 3556 wrote to memory of 3992	3556	cmd.exe	81
PID 3556 wrote to memory of 3992	3556	cmd.exe	81
PID 2740 wrote to memory of 4648	2740	New.exe	82
PID 2740 wrote to memory of 4648	2740	New.exe	82
PID 2740 wrote to memory of 4648	2740	New.exe	82

C:\Users\Admin\AppData\Local\Temp\New.exe
"C:\Users\Admin\AppData\Local\Temp\New.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2740
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\1Pu4kK0nZ1GL.bat" "
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3556
- - C:\Windows\SysWOW64\chcp.com
    chcp 65001
    3⤵
    PID:4720
- - C:\Windows\SysWOW64\PING.EXE
    ping -n 10 localhost
    3⤵
    - Runs ping.exe
    PID:3992
- C:\Windows\SysWOW64\SCHTASKS.exe
  "SCHTASKS.exe" /create /tn "$77New.exe" /tr "'C:\Users\Admin\AppData\Local\Temp\New.exe'" /sc onlogon /rl HIGHEST
  2⤵
  - Creates scheduled task(s)
  PID:4648

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

Remote System Discovery

T1018

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

1Pu4kK0nZ1GL.bat

Path C:\Users\Admin\AppData\Local\Temp\1Pu4kK0nZ1GL.bat
Size 260B
SHA256 df2b5669f1f564df5f4929c415c5ee5d9eb4c09a474b44230a8bd3ce5b712445
MD5 2dedd42362a90a721d4700553de023ed
SHA1 e3974c125cdbe411a0110207b40723854bbd0c90
SHA512 cb46389bf7a7faa19a362f62fe99e670118a4898a303f3eb8ee8f3602e7a73e41ffc22476a9f979fcf3ce55ef6594a95d0e059902f597f23482d6225765ff948
MD5 SHA1 SHA512

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05-27-~1

Path C:\Users\Admin\AppData\Roaming\$sxr-Logs\05-27-~1
Size 224B
SHA256 d83e7c884a32ef8cdc29692d253f196201a430caaa3407b4a296c02bc5a9a66e
MD5 c906612cf0067cbc9d22ea083cac6bae
SHA1 44df01af9e4b23396c6c7a224f24834a34bcf69a
SHA512 266e2c5aa2b041c45d91cd91f2bcc008059275a39949c5dbb15c4142a7153ae84e548d6cf988818252fb5d5e7fd374b4e57fc1a0c5e5b94d765360b2867b99c0
MD5 SHA1 SHA512

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memory/2740-6-0x0000000006350000-0x0000000006362000-memory.dmp

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memory/2740-3-0x00000000056B0000-0x0000000005742000-memory.dmp

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memory/2740-4-0x00000000744B0000-0x0000000074C61000-memory.dmp

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memory/2740-5-0x0000000005750000-0x00000000057B6000-memory.dmp

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memory/2740-0-0x00000000744BE000-0x00000000744BF000-memory.dmp

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memory/2740-7-0x00000000068A0000-0x00000000068DC000-memory.dmp

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memory/2740-9-0x0000000006D60000-0x0000000006D6A000-memory.dmp

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memory/2740-10-0x00000000744BE000-0x00000000744BF000-memory.dmp

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memory/2740-11-0x00000000744B0000-0x0000000074C61000-memory.dmp

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memory/2740-2-0x0000000005C60000-0x0000000006206000-memory.dmp

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memory/2740-17-0x00000000744B0000-0x0000000074C61000-memory.dmp

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memory/2740-1-0x0000000000C50000-0x0000000000CBC000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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