quasar | fcd5b843d50ec2f973aaa27e54b6bf045931cc3cb8d9bea4edaade352fe0f7d5

Analysis

max time kernel
297s
max time network
312s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
02-06-2024 06:22

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General

Target

uni/Uni - Copy (18) - Copy.exe
Size

409KB
MD5

b70fdac25a99501e3cae11f1b775249e
SHA1

3c59226479bfdcd1b2927bcfb1a7516d4cb8dd71
SHA256

51ff3eb450a786c1aaa75ff889f2fd256412a7b75d04277fdf9fcccc20e57246
SHA512

43f0d5d6e5f0d5febba537c109ffdbc250bbb6e9725e635a43ec975b0353048eaeee50b6e9274cd5e072ea6b0cea32439bd37408b2528832f467f2075f74ca44
SSDEEP

12288:gpbJjGut6AoE3hVVdFaC/eZPTMTDlpgfJCKuMsVs:oVaurMLcDlpRKai

Score

10^/10

quasar seroxen spyware trojan

Malware Config

Extracted

Family

quasar

Version

3.1.5

Botnet

SeroXen

panel-slave.gl.at.ply.gg:57059

panel-slave.gl.at.ply.gg:27892

Mutex

$Sxr-rpL8EItHN3pqIQQVy2

Attributes

encryption_key
Lme7VBS3l58VwLM69PNM
install_name
Client.exe
log_directory
Logs
reconnect_delay
3000
startup_key
SeroXen
subdirectory
SubDir

Signatures

Quasar RAT 3 IoCs
Quasar is an open source Remote Access Tool.
trojan spyware quasar

Processes:

schtasks.exe

pid process

3632 schtasks.exe
14 ip-api.com
36 api.ipify.org

pid	process
3632	schtasks.exe
14	ip-api.com
36	api.ipify.org

Quasar payload 2 IoCs

Processes:

resource	yara_rule
behavioral18/memory/848-1-0x0000000000EB0000-0x0000000000F1C000-memory.dmp	family_quasar
C:\Users\Admin\AppData\Roaming\SubDir\Client.exe	family_quasar

Executes dropped EXE 2 IoCs

Processes:

Client.exekinUt0HgRQY1.exe

pid process

4492 Client.exe
3280 kinUt0HgRQY1.exe
Looks up external IP address via web service 2 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.

Processes:

flow ioc

14 ip-api.com
36 api.ipify.org
Creates scheduled task(s) 1 TTPs 4 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task/Job
T1053

Processes:

SCHTASKS.exeschtasks.exeSCHTASKS.exeschtasks.exe

pid process

4020 SCHTASKS.exe
3632 schtasks.exe
4848 SCHTASKS.exe
4860 schtasks.exe

pid	process
4492	Client.exe
3280	kinUt0HgRQY1.exe

flow	ioc
14	ip-api.com
36	api.ipify.org

pid	process
4020	SCHTASKS.exe
3632	schtasks.exe
4848	SCHTASKS.exe
4860	schtasks.exe

Modifies registry class 2 IoCs

Processes:

OpenWith.exeOpenWith.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000_Classes\Local Settings	OpenWith.exe
Key created	\REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000_Classes\Local Settings	OpenWith.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

Processes:

Uni - Copy (18) - Copy.exeClient.exeAUDIODG.EXE

description	pid	process
Token: SeDebugPrivilege	848	Uni - Copy (18) - Copy.exe
Token: SeDebugPrivilege	4492	Client.exe
Token: 33	3468	AUDIODG.EXE
Token: SeIncBasePriorityPrivilege	3468	AUDIODG.EXE

Suspicious use of SetWindowsHookEx 4 IoCs

Processes:

Client.exekinUt0HgRQY1.exeOpenWith.exeOpenWith.exe

pid process

4492 Client.exe
3280 kinUt0HgRQY1.exe
948 OpenWith.exe
1096 OpenWith.exe

pid	process
4492	Client.exe
3280	kinUt0HgRQY1.exe
948	OpenWith.exe
1096	OpenWith.exe

Suspicious use of WriteProcessMemory 20 IoCs

Processes:

Uni - Copy (18) - Copy.exeClient.exemsedge.exe

description	pid	process	target process
PID 848 wrote to memory of 3632	848	Uni - Copy (18) - Copy.exe	schtasks.exe
PID 848 wrote to memory of 3632	848	Uni - Copy (18) - Copy.exe	schtasks.exe
PID 848 wrote to memory of 3632	848	Uni - Copy (18) - Copy.exe	schtasks.exe
PID 848 wrote to memory of 4492	848	Uni - Copy (18) - Copy.exe	Client.exe
PID 848 wrote to memory of 4492	848	Uni - Copy (18) - Copy.exe	Client.exe
PID 848 wrote to memory of 4492	848	Uni - Copy (18) - Copy.exe	Client.exe
PID 848 wrote to memory of 4848	848	Uni - Copy (18) - Copy.exe	SCHTASKS.exe
PID 848 wrote to memory of 4848	848	Uni - Copy (18) - Copy.exe	SCHTASKS.exe
PID 848 wrote to memory of 4848	848	Uni - Copy (18) - Copy.exe	SCHTASKS.exe
PID 4492 wrote to memory of 4860	4492	Client.exe	schtasks.exe
PID 4492 wrote to memory of 4860	4492	Client.exe	schtasks.exe
PID 4492 wrote to memory of 4860	4492	Client.exe	schtasks.exe
PID 4492 wrote to memory of 3280	4492	Client.exe	kinUt0HgRQY1.exe
PID 4492 wrote to memory of 3280	4492	Client.exe	kinUt0HgRQY1.exe
PID 4492 wrote to memory of 3280	4492	Client.exe	kinUt0HgRQY1.exe
PID 4492 wrote to memory of 4020	4492	Client.exe	SCHTASKS.exe
PID 4492 wrote to memory of 4020	4492	Client.exe	SCHTASKS.exe
PID 4492 wrote to memory of 4020	4492	Client.exe	SCHTASKS.exe
PID 2944 wrote to memory of 3504	2944	msedge.exe	msedge.exe
PID 2944 wrote to memory of 3504	2944	msedge.exe	msedge.exe

C:\Users\Admin\AppData\Local\Temp\uni\Uni - Copy (18) - Copy.exe
"C:\Users\Admin\AppData\Local\Temp\uni\Uni - Copy (18) - Copy.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:848

C:\Windows\SysWOW64\schtasks.exe
"schtasks" /create /tn "SeroXen" /sc ONLOGON /tr "C:\Users\Admin\AppData\Local\Temp\uni\Uni - Copy (18) - Copy.exe" /rl HIGHEST /f
2⤵
- Quasar RAT
- Creates scheduled task(s)
PID:3632

C:\Users\Admin\AppData\Roaming\SubDir\Client.exe
"C:\Users\Admin\AppData\Roaming\SubDir\Client.exe"
2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4492

C:\Windows\SysWOW64\schtasks.exe
"schtasks" /create /tn "SeroXen" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f
3⤵
- Creates scheduled task(s)
PID:4860

C:\Users\Admin\AppData\Local\Temp\kinUt0HgRQY1.exe
"C:\Users\Admin\AppData\Local\Temp\kinUt0HgRQY1.exe"
3⤵
- Executes dropped EXE
- Suspicious use of SetWindowsHookEx
PID:3280

C:\Windows\SysWOW64\SCHTASKS.exe
"SCHTASKS.exe" /create /tn "$77Client.exe" /tr "'C:\Users\Admin\AppData\Roaming\SubDir\Client.exe'" /sc onlogon /rl HIGHEST
3⤵
- Creates scheduled task(s)
PID:4020

C:\Windows\SysWOW64\SCHTASKS.exe
"SCHTASKS.exe" /create /tn "$77Uni - Copy (18) - Copy.exe" /tr "'C:\Users\Admin\AppData\Local\Temp\uni\Uni - Copy (18) - Copy.exe'" /sc onlogon /rl HIGHEST
2⤵
- Creates scheduled task(s)
PID:4848

C:\Windows\system32\AUDIODG.EXE
C:\Windows\system32\AUDIODG.EXE 0x2f4 0x4f0
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:3468

C:\Windows\system32\OpenWith.exe
C:\Windows\system32\OpenWith.exe -Embedding
1⤵
- Modifies registry class
- Suspicious use of SetWindowsHookEx
PID:948

C:\Windows\system32\OpenWith.exe
C:\Windows\system32\OpenWith.exe -Embedding
1⤵
- Modifies registry class
- Suspicious use of SetWindowsHookEx
PID:1096

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --single-argument microsoft-edge:https://www.bing.com/search?q=show%20desktop%20icons%20windows%2010%20site:microsoft.com&form=B00032&ocid=SettingsHAQ-BingIA&mkt=en-US
1⤵
- Suspicious use of WriteProcessMemory
PID:2944

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=crashpad-handler "--user-data-dir=C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data" /prefetch:7 --monitor-self-annotation=ptype=crashpad-handler "--database=C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Crashpad" "--metrics-dir=C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data" --annotation=IsOfficialBuild=1 --annotation=channel= --annotation=chromium-version=92.0.4515.131 "--annotation=exe=C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --annotation=plat=Win64 "--annotation=prod=Microsoft Edge" --annotation=ver=92.0.902.67 --initial-client-data=0x120,0x124,0x128,0xfc,0x12c,0x7fff64f646f8,0x7fff64f64708,0x7fff64f64718
2⤵
PID:3504

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=gpu-process --field-trial-handle=2136,13819121581382018949,10697153588827390289,131072 --gpu-preferences=UAAAAAAAAADgAAAQAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHgAAAAAAAAAeAAAAAAAAAAoAAAABAAAACAAAAAAAAAAKAAAAAAAAAAwAAAAAAAAADgAAAAAAAAAEAAAAAAAAAAAAAAADQAAABAAAAAAAAAAAQAAAA0AAAAQAAAAAAAAAAQAAAANAAAAEAAAAAAAAAAHAAAADQAAAAgAAAAAAAAACAAAAAAAAAA= --mojo-platform-channel-handle=2168 /prefetch:2
2⤵
PID:1248

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=network.mojom.NetworkService --field-trial-handle=2136,13819121581382018949,10697153588827390289,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=2264 /prefetch:3
2⤵
PID:4784

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=storage.mojom.StorageService --field-trial-handle=2136,13819121581382018949,10697153588827390289,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=2892 /prefetch:8
2⤵
PID:2220

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2136,13819121581382018949,10697153588827390289,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=6 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=3372 /prefetch:1
2⤵
PID:4520

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2136,13819121581382018949,10697153588827390289,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=5 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=3404 /prefetch:1
2⤵
PID:4808

C:\Windows\System32\CompPkgSrv.exe
C:\Windows\System32\CompPkgSrv.exe -Embedding
1⤵
PID:4184

C:\Windows\System32\CompPkgSrv.exe
C:\Windows\System32\CompPkgSrv.exe -Embedding
1⤵
PID:4788

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Scheduled Task/Job

T1053

Persistence

Scheduled Task/Job

T1053

Privilege Escalation

Scheduled Task/Job

T1053

Defense Evasion

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Crashpad\settings.dat
Filesize
152B

MD5
439b5e04ca18c7fb02cf406e6eb24167

SHA1
e0c5bb6216903934726e3570b7d63295b9d28987

SHA256
247d0658695a1eb44924a32363906e37e9864ba742fe35362a71f3a520ad2654

SHA512
d0241e397060eebd4535197de4f1ae925aa88ae413a3a9ded6e856b356c4324dfd45dddfef9a536f04e4a258e8fe5dc1586d92d1d56b649f75ded8eddeb1f3e2

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Crashpad\settings.dat
Filesize
152B

MD5
a8e767fd33edd97d306efb6905f93252

SHA1
a6f80ace2b57599f64b0ae3c7381f34e9456f9d3

SHA256
c8077a9fc79e2691ef321d556c4ce9933ca0570f2bbaa32fa32999dfd5f908bb

SHA512
07b748582fe222795bce74919aa06e9a09025c14493edb6f3b1f112d9a97ac2225fe0904cac9adf2a62c98c42f7877076e409803014f0afd395f4cc8be207241

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Preferences
Filesize
5KB

MD5
428d7660eca09aa7128e773749a3cf1a

SHA1
e013f3e9882f04997cd8211121ab4747431f1216

SHA256
6bd0f45e21d312fc9d25f33a5e256e9d3d9b2d5bd81e24ab6857f7fb1815f3ce

SHA512
0dd3077763ff66e800422fb1fb6e9d460ce8045826a8df4b9e78af1ae2df4135192c8fbb427109ad6dd391767bb7726e511543c092497680b09fd12a55ed9651

Download Submit
C:\Users\Admin\AppData\Local\Temp\kinUt0HgRQY1.exe
Filesize
277KB

MD5
dac0c5b2380cbdd93b46763427c9f8df

SHA1
038089e1a0ac8375be797fc3ce7ae719abc72834

SHA256
d02538788fb57f568ece292f5fc20e9775c86d504de67f57e22534f84adc73c6

SHA512
05cc1f6bf25a6545a06c735ae7a4a7fc25489bdb9fbc8d5797be623982662c4a93cba2d20bfe14313ef1548eaaa691e55fabdd8e3d3e45de9ab42dc62f9a7023

Download Submit
C:\Users\Admin\AppData\Roaming\SubDir\Client.exe
Filesize
409KB

MD5
b70fdac25a99501e3cae11f1b775249e

SHA1
3c59226479bfdcd1b2927bcfb1a7516d4cb8dd71

SHA256
51ff3eb450a786c1aaa75ff889f2fd256412a7b75d04277fdf9fcccc20e57246

SHA512
43f0d5d6e5f0d5febba537c109ffdbc250bbb6e9725e635a43ec975b0353048eaeee50b6e9274cd5e072ea6b0cea32439bd37408b2528832f467f2075f74ca44

Download Submit
\??\pipe\LOCAL\crashpad_2944_GNLFCVQZVNTHMRQC
MD5
d41d8cd98f00b204e9800998ecf8427e

SHA1
da39a3ee5e6b4b0d3255bfef95601890afd80709

SHA256
e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

SHA512
cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

Download Submit
memory/848-5-0x00000000059A0000-0x0000000005A06000-memory.dmp

Filesize
408KB

Download
memory/848-0-0x0000000074F4E000-0x0000000074F4F000-memory.dmp

Filesize
4KB

Download
memory/848-1-0x0000000000EB0000-0x0000000000F1C000-memory.dmp

Filesize
432KB

Download
memory/848-2-0x0000000005EB0000-0x0000000006454000-memory.dmp

Filesize
5.6MB

Download
memory/848-15-0x0000000074F40000-0x00000000756F0000-memory.dmp

Filesize
7.7MB

Download
memory/848-3-0x0000000005900000-0x0000000005992000-memory.dmp

Filesize
584KB

Download
memory/848-4-0x0000000074F40000-0x00000000756F0000-memory.dmp

Filesize
7.7MB

Download
memory/848-6-0x00000000065F0000-0x0000000006602000-memory.dmp

Filesize
72KB

Download
memory/4492-19-0x0000000074F40000-0x00000000756F0000-memory.dmp

Filesize
7.7MB

Download
memory/4492-20-0x0000000074F40000-0x00000000756F0000-memory.dmp

Filesize
7.7MB

Download
memory/4492-30-0x0000000074F40000-0x00000000756F0000-memory.dmp

Filesize
7.7MB

Download
memory/4492-18-0x0000000006510000-0x000000000651A000-memory.dmp

Filesize
40KB

Download
memory/4492-16-0x0000000006060000-0x000000000609C000-memory.dmp

Filesize
240KB

Download
memory/4492-13-0x0000000074F40000-0x00000000756F0000-memory.dmp

Filesize
7.7MB

Download
memory/4492-12-0x0000000074F40000-0x00000000756F0000-memory.dmp

Filesize
7.7MB

Download