quasar | 1731919d2dc81ad27833aaaf162c923c8c0e9ec12f0517c7db0409b74e9550c6

Analysis

max time kernel
149s
max time network
158s
platform
windows10-2004_x64
resource
win10v2004-20240611-en
resource tags

arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system
submitted
01-07-2024 18:28

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

zvgfd-main/Empyrean Removal Tool .exe
Size

495KB
MD5

0858df720da731fb05cfa980134fa639
SHA1

0e5e7bf34494892b20e2ed62cea218ada919361d
SHA256

4af251cefa5fbdfb07cff0be7ba01cd6f525099949dac28b5780876a4942d810
SHA512

c2f06ec22f57876b4ed168536bba76b7121962bb752d2a244eea3a37b68044837bf4263b5e3812a4ec1cf5b235653b3f389bbeefef89f609ae5af0eb1e847eb9
SSDEEP

12288:r6iLGC/KU7T+q1/t5moY4MHJgOvK2xqTCzqkfuxHn:rDVyWT+Y/t0oY4MKiK20T8fux

Score

10^/10

quasar xworm slave execution rat spyware trojan

Malware Config

Extracted

Family

xworm

super-nearest.gl.at.ply.gg:17835

Extracted

Family

quasar

Version

3.1.5

Botnet

Slave

stop-largely.gl.at.ply.gg:27116

Mutex

$Sxr-kl1r656AGsPQksTmi8

Attributes

encryption_key
JAfppY5sR1LcDCf00ZQ4
install_name
$sxr~Client.exe
log_directory
Logs
reconnect_delay
3000
startup_key
SeroXen Client Startup
subdirectory
$sxr~SubDir

Signatures

Detect Xworm Payload 2 IoCs

Processes:

resource yara_rule

C:\Users\Admin\AppData\Local\Temp\zvgfd-main\Fanta.Live.exe family_xworm
behavioral10/memory/2620-23-0x0000000000530000-0x0000000000548000-memory.dmp family_xworm
Quasar RAT
Quasar is an open source Remote Access Tool.
trojan spyware quasar
Quasar payload 2 IoCs

Processes:

resource yara_rule

C:\Users\Admin\AppData\Local\Temp\zvgfd-main\Uni.exe family_quasar
behavioral10/memory/1140-27-0x0000000000A70000-0x0000000000ADC000-memory.dmp family_quasar
Xworm
Xworm is a remote access trojan written in C#.
trojan rat xworm
Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs
Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.
execution

PowerShell
T1059.001

Processes:

powershell.exepowershell.exe

pid process

2244 powershell.exe
2564 powershell.exe

resource	yara_rule
C:\Users\Admin\AppData\Local\Temp\zvgfd-main\Fanta.Live.exe	family_xworm
behavioral10/memory/2620-23-0x0000000000530000-0x0000000000548000-memory.dmp	family_xworm

resource	yara_rule
C:\Users\Admin\AppData\Local\Temp\zvgfd-main\Uni.exe	family_quasar
behavioral10/memory/1140-27-0x0000000000A70000-0x0000000000ADC000-memory.dmp	family_quasar

pid	process
2244	powershell.exe
2564	powershell.exe

Checks computer location settings 2 TTPs 2 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

Processes:

Empyrean Removal Tool .exeFanta.Live.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2447855248-390457009-3660902674-1000\Control Panel\International\Geo\Nation	Empyrean Removal Tool .exe
Key value queried	\REGISTRY\USER\S-1-5-21-2447855248-390457009-3660902674-1000\Control Panel\International\Geo\Nation	Fanta.Live.exe

Executes dropped EXE 2 IoCs

Processes:

Fanta.Live.exeUni.exe

pid process

2620 Fanta.Live.exe
1140 Uni.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

16 ip-api.com
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082
Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence execution

Scheduled Task
T1053.005

Processes:

schtasks.exe

pid process

1748 schtasks.exe
Suspicious behavior: EnumeratesProcesses 5 IoCs

Processes:

powershell.exepowershell.exeFanta.Live.exe

pid process

2244 powershell.exe
2244 powershell.exe
2564 powershell.exe
2564 powershell.exe
2620 Fanta.Live.exe

pid	process
2620	Fanta.Live.exe
1140	Uni.exe

flow	ioc
16	ip-api.com

pid	process
1748	schtasks.exe

pid	process
2244	powershell.exe
2244	powershell.exe
2564	powershell.exe
2564	powershell.exe
2620	Fanta.Live.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

Processes:

Uni.exeFanta.Live.exepowershell.exepowershell.exe

description	pid	process
Token: SeDebugPrivilege	1140	Uni.exe
Token: SeDebugPrivilege	2620	Fanta.Live.exe
Token: SeDebugPrivilege	2244	powershell.exe
Token: SeDebugPrivilege	2564	powershell.exe
Token: SeDebugPrivilege	2620	Fanta.Live.exe

Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

Uni.exeFanta.Live.exe

pid process

1140 Uni.exe
2620 Fanta.Live.exe

pid	process
1140	Uni.exe
2620	Fanta.Live.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

Empyrean Removal Tool .exeUni.exeFanta.Live.exe

description	pid	process	target process
PID 3636 wrote to memory of 2620	3636	Empyrean Removal Tool .exe	Fanta.Live.exe
PID 3636 wrote to memory of 2620	3636	Empyrean Removal Tool .exe	Fanta.Live.exe
PID 3636 wrote to memory of 1140	3636	Empyrean Removal Tool .exe	Uni.exe
PID 3636 wrote to memory of 1140	3636	Empyrean Removal Tool .exe	Uni.exe
PID 3636 wrote to memory of 1140	3636	Empyrean Removal Tool .exe	Uni.exe
PID 1140 wrote to memory of 1748	1140	Uni.exe	schtasks.exe
PID 1140 wrote to memory of 1748	1140	Uni.exe	schtasks.exe
PID 1140 wrote to memory of 1748	1140	Uni.exe	schtasks.exe
PID 2620 wrote to memory of 2244	2620	Fanta.Live.exe	powershell.exe
PID 2620 wrote to memory of 2244	2620	Fanta.Live.exe	powershell.exe
PID 2620 wrote to memory of 2564	2620	Fanta.Live.exe	powershell.exe
PID 2620 wrote to memory of 2564	2620	Fanta.Live.exe	powershell.exe

C:\Users\Admin\AppData\Local\Temp\zvgfd-main\Empyrean Removal Tool .exe
"C:\Users\Admin\AppData\Local\Temp\zvgfd-main\Empyrean Removal Tool .exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3636

C:\Users\Admin\AppData\Local\Temp\zvgfd-main\Fanta.Live.exe
"C:\Users\Admin\AppData\Local\Temp\zvgfd-main\Fanta.Live.exe"
2⤵
- Checks computer location settings
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2620

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\zvgfd-main\Fanta.Live.exe'
3⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2244

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Fanta.Live.exe'
3⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2564

C:\Users\Admin\AppData\Local\Temp\zvgfd-main\Uni.exe
"C:\Users\Admin\AppData\Local\Temp\zvgfd-main\Uni.exe"
2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1140

C:\Windows\SysWOW64\schtasks.exe
"schtasks" /create /tn "SeroXen Client Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Local\Temp\zvgfd-main\Uni.exe" /rl HIGHEST /f
3⤵
- Scheduled Task/Job: Scheduled Task
PID:1748

Network

MITRE ATT&CK Matrix ATT&CK v13

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log
Filesize
2KB

MD5
440cb38dbee06645cc8b74d51f6e5f71

SHA1
d7e61da91dc4502e9ae83281b88c1e48584edb7c

SHA256
8ef7a682dfd99ff5b7e9de0e1be43f0016d68695a43c33c028af2635cc15ecfe

SHA512
3aab19578535e6ba0f6beb5690c87d970292100704209d2dcebddcdd46c6bead27588ef5d98729bfd50606a54cc1edf608b3d15bef42c13b9982aaaf15de7fd6

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Filesize
944B

MD5
380007fbdf9fef355db2afd71fce9cd1

SHA1
e98802ef10fac8ef96a3210930784c317ca76fa0

SHA256
6353a11014d2c1495ac7a5efef195d06d8e8b30a163c437263361deb5a28de03

SHA512
9790c6b4c16ed4f4e6cddf492d01a6b4963e20bde6ddf40017db20ffc672b0cfaea2ad6aebcb51e8e459682974be0d024b35546aad840051a1e9fe2d3e565bd5

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_2ppxzgrj.x0u.ps1
Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\zvgfd-main\Fanta.Live.exe
Filesize
73KB

MD5
60d0b57571b43d98f5993066eb083637

SHA1
b84391c08557b919e385939b9acdd8df768a3e6a

SHA256
6947c0946505af848a175127bc08d77a2ed846c7b94a79d3c27881725cebf2ef

SHA512
32d3f9c226e9951399381317441c8768b02556082488ec5be18e2e08daf33144e4cee8536eddbb9ea0a0dcd75495d1cb4cc047e49195fe2092852e9d20d64796

Download Submit
C:\Users\Admin\AppData\Local\Temp\zvgfd-main\Uni.exe
Filesize
409KB

MD5
a761927744e8ef30e04beefb644cd272

SHA1
8450c00f1141399d75c87de08f6b29837c148232

SHA256
08d3de9382225ce31ada8470f003dfa68789a6bb857bf3adc67d80d7a93018f9

SHA512
98775f9e55bfb66944ef315feadbdb60a7be80e2d00bf4f1f944b341515bae2f4f0b115145b78c6a6026550a8646933c9ec49d7e4161810ef69dc4d2875ea4e5

Download Submit
memory/1140-27-0x0000000000A70000-0x0000000000ADC000-memory.dmp

Filesize
432KB

Download
memory/1140-36-0x0000000006D40000-0x0000000006D4A000-memory.dmp

Filesize
40KB

Download
memory/1140-28-0x0000000074F2E000-0x0000000074F2F000-memory.dmp

Filesize
4KB

Download
memory/1140-29-0x00000000059A0000-0x0000000005F44000-memory.dmp

Filesize
5.6MB

Download
memory/1140-30-0x00000000054F0000-0x0000000005582000-memory.dmp

Filesize
584KB

Download
memory/1140-31-0x0000000074F20000-0x00000000756D0000-memory.dmp

Filesize
7.7MB

Download
memory/1140-32-0x0000000005590000-0x00000000055F6000-memory.dmp

Filesize
408KB

Download
memory/1140-33-0x0000000005950000-0x0000000005962000-memory.dmp

Filesize
72KB

Download
memory/1140-34-0x0000000006750000-0x000000000678C000-memory.dmp

Filesize
240KB

Download
memory/1140-66-0x0000000074F20000-0x00000000756D0000-memory.dmp

Filesize
7.7MB

Download
memory/1140-65-0x0000000074F2E000-0x0000000074F2F000-memory.dmp

Filesize
4KB

Download
memory/2244-47-0x000001637D0C0000-0x000001637D0E2000-memory.dmp

Filesize
136KB

Download
memory/2620-26-0x00007FFEC0B10000-0x00007FFEC15D1000-memory.dmp

Filesize
10.8MB

Download
memory/2620-23-0x0000000000530000-0x0000000000548000-memory.dmp

Filesize
96KB

Download
memory/2620-62-0x000000001B680000-0x000000001B782000-memory.dmp

Filesize
1.0MB

Download
memory/2620-63-0x00007FFEC0B10000-0x00007FFEC15D1000-memory.dmp

Filesize
10.8MB

Download
memory/2620-37-0x0000000002880000-0x0000000002890000-memory.dmp

Filesize
64KB

Download
memory/2620-67-0x0000000002880000-0x0000000002890000-memory.dmp

Filesize
64KB

Download
memory/3636-1-0x0000000000900000-0x0000000000982000-memory.dmp

Filesize
520KB

Download
memory/3636-0-0x00007FFEC0B13000-0x00007FFEC0B15000-memory.dmp

Filesize
8KB

Download