quasar | c4f4b783e9b152a00d5cac8b82d2ae0c74fa848aaa4a524dc5cb81b1576aaab5

General

Target

uni/Uni - Copy (3).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

C2

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

flow ioc

12 ip-api.com
37 api.ipify.org
1680 schtasks.exe

flow	ioc
12	ip-api.com
37	api.ipify.org
1680	schtasks.exe

Quasar payload 2 IoCs

Processes:

resource	yara_rule
behavioral4/memory/4372-1-0x00000000007D0000-0x000000000083C000-memory.dmp	family_quasar
C:\Users\Admin\AppData\Roaming\SubDir\Client.exe	family_quasar

Executes dropped EXE 2 IoCs

Processes:

Client.exeRVKL3Qjdy5Kd.exe

pid process

224 Client.exe
4892 RVKL3Qjdy5Kd.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

12 ip-api.com
37 api.ipify.org
Creates scheduled task(s) 1 TTPs 3 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task/Job
T1053

Processes:

schtasks.exeSCHTASKS.exeschtasks.exe

pid process

1680 schtasks.exe
2936 SCHTASKS.exe
2580 schtasks.exe

pid	process
224	Client.exe
4892	RVKL3Qjdy5Kd.exe

flow	ioc
12	ip-api.com
37	api.ipify.org

pid	process
1680	schtasks.exe
2936	SCHTASKS.exe
2580	schtasks.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

Processes:

Uni - Copy (3).exeClient.exeAUDIODG.EXE

description	pid	process
Token: SeDebugPrivilege	4372	Uni - Copy (3).exe
Token: SeDebugPrivilege	224	Client.exe
Token: 33	3612	AUDIODG.EXE
Token: SeIncBasePriorityPrivilege	3612	AUDIODG.EXE

Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

Client.exeRVKL3Qjdy5Kd.exe

pid process

224 Client.exe
4892 RVKL3Qjdy5Kd.exe

pid	process
224	Client.exe
4892	RVKL3Qjdy5Kd.exe

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

Uni - Copy (3).exeClient.exe

description	pid	process	target process
PID 4372 wrote to memory of 1680	4372	Uni - Copy (3).exe	schtasks.exe
PID 4372 wrote to memory of 1680	4372	Uni - Copy (3).exe	schtasks.exe
PID 4372 wrote to memory of 1680	4372	Uni - Copy (3).exe	schtasks.exe
PID 4372 wrote to memory of 224	4372	Uni - Copy (3).exe	Client.exe
PID 4372 wrote to memory of 224	4372	Uni - Copy (3).exe	Client.exe
PID 4372 wrote to memory of 224	4372	Uni - Copy (3).exe	Client.exe
PID 4372 wrote to memory of 2936	4372	Uni - Copy (3).exe	SCHTASKS.exe
PID 4372 wrote to memory of 2936	4372	Uni - Copy (3).exe	SCHTASKS.exe
PID 4372 wrote to memory of 2936	4372	Uni - Copy (3).exe	SCHTASKS.exe
PID 224 wrote to memory of 2580	224	Client.exe	schtasks.exe
PID 224 wrote to memory of 2580	224	Client.exe	schtasks.exe
PID 224 wrote to memory of 2580	224	Client.exe	schtasks.exe
PID 224 wrote to memory of 4892	224	Client.exe	RVKL3Qjdy5Kd.exe
PID 224 wrote to memory of 4892	224	Client.exe	RVKL3Qjdy5Kd.exe
PID 224 wrote to memory of 4892	224	Client.exe	RVKL3Qjdy5Kd.exe

C:\Users\Admin\AppData\Local\Temp\uni\Uni - Copy (3).exe
"C:\Users\Admin\AppData\Local\Temp\uni\Uni - Copy (3).exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4372

C:\Windows\SysWOW64\schtasks.exe
"schtasks" /create /tn "SeroXen" /sc ONLOGON /tr "C:\Users\Admin\AppData\Local\Temp\uni\Uni - Copy (3).exe" /rl HIGHEST /f
2⤵
- Quasar RAT
- Creates scheduled task(s)
PID:1680

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:224

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:2580

C:\Users\Admin\AppData\Local\Temp\RVKL3Qjdy5Kd.exe
"C:\Users\Admin\AppData\Local\Temp\RVKL3Qjdy5Kd.exe"
3⤵
- Executes dropped EXE
- Suspicious use of SetWindowsHookEx
PID:4892

C:\Windows\SysWOW64\SCHTASKS.exe
"SCHTASKS.exe" /create /tn "$77Uni - Copy (3).exe" /tr "'C:\Users\Admin\AppData\Local\Temp\uni\Uni - Copy (3).exe'" /sc onlogon /rl HIGHEST
2⤵
- Creates scheduled task(s)
PID:2936

C:\Windows\system32\AUDIODG.EXE
C:\Windows\system32\AUDIODG.EXE 0x470 0x24c
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:3612

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=create%20recovery%20drive%20windows%2010%20site:microsoft.com&form=B00032&ocid=SettingsHAQ-BingIA&mkt=en-US
1⤵
PID:4276

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,0x7ffbf71a46f8,0x7ffbf71a4708,0x7ffbf71a4718
2⤵
PID:4468

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=gpu-process --field-trial-handle=2088,6355157037342921273,16541610697077534238,131072 --gpu-preferences=UAAAAAAAAADgAAAQAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHgAAAAAAAAAeAAAAAAAAAAoAAAABAAAACAAAAAAAAAAKAAAAAAAAAAwAAAAAAAAADgAAAAAAAAAEAAAAAAAAAAAAAAADQAAABAAAAAAAAAAAQAAAA0AAAAQAAAAAAAAAAQAAAANAAAAEAAAAAAAAAAHAAAADQAAAAgAAAAAAAAACAAAAAAAAAA= --mojo-platform-channel-handle=2172 /prefetch:2
2⤵
PID:1500

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=2088,6355157037342921273,16541610697077534238,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=2124 /prefetch:3
2⤵
PID:3104

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=2088,6355157037342921273,16541610697077534238,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=2888 /prefetch:8
2⤵
PID:3544

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2088,6355157037342921273,16541610697077534238,131072 --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=3320 /prefetch:1
2⤵
PID:2008

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2088,6355157037342921273,16541610697077534238,131072 --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=3344 /prefetch:1
2⤵
PID:3980

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2088,6355157037342921273,16541610697077534238,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=7 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=4828 /prefetch:1
2⤵
PID:2644

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2088,6355157037342921273,16541610697077534238,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=8 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=5052 /prefetch:1
2⤵
PID:4244

C:\Windows\System32\CompPkgSrv.exe
C:\Windows\System32\CompPkgSrv.exe -Embedding
1⤵
PID:780

C:\Windows\System32\CompPkgSrv.exe
C:\Windows\System32\CompPkgSrv.exe -Embedding
1⤵
PID:1648

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Persistence

Scheduled Task/Job

1

T1053

Privilege Escalation

Scheduled Task/Job

1

T1053

Defense Evasion

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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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\Cache\f_000002
Filesize
40KB

MD5
5daa4ea518f05f1b174e7cfc5f4ce161

SHA1
87414a8565b2863c519c27ec5e8dc3ca37336545

SHA256
bf961bd22239c8db046cceb1be178353f481888c4f4cade9b464735758468269

SHA512
d5a8563f3c377cdcfa2218edd19d23ad3997b832573f92c0633e09d8d2aad1d8c625576f46a4a5bf6a63fe945472fb7f4264504f18545bdb75dc08d6a8a852cc

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

MD5
858dea1e5a271ad3c8f9740a276406c6

SHA1
165ca5d9b3dee775f9be5f81f02bd4e1f8a1a8b2

SHA256
2d2ed149d58b046a42d4f3d2ee5f3de350391c3e53c3e2d4559b2bf0ad62dd5f

SHA512
b2d088314dd049b46394257eee88eef686258d7bb57b67bf6a014f97e2fb0dc56c00a6fd7370453d212b5d4f983fc518008b06e6ef4128fb30ac658442968264

Download Submit
C:\Users\Admin\AppData\Local\Temp\RVKL3Qjdy5Kd.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_4276_ETNOYEQOVZFPAYNH
MD5
d41d8cd98f00b204e9800998ecf8427e

SHA1
da39a3ee5e6b4b0d3255bfef95601890afd80709

SHA256
e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

SHA512
cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

Download Submit
memory/224-18-0x0000000075150000-0x0000000075900000-memory.dmp

Filesize
7.7MB

Download
memory/224-12-0x0000000075150000-0x0000000075900000-memory.dmp

Filesize
7.7MB

Download
memory/224-13-0x0000000075150000-0x0000000075900000-memory.dmp

Filesize
7.7MB

Download
memory/224-19-0x0000000075150000-0x0000000075900000-memory.dmp

Filesize
7.7MB

Download
memory/224-17-0x0000000007160000-0x000000000716A000-memory.dmp

Filesize
40KB

Download
memory/4372-5-0x0000000005330000-0x0000000005396000-memory.dmp

Filesize
408KB

Download
memory/4372-15-0x0000000075150000-0x0000000075900000-memory.dmp

Filesize
7.7MB

Download
memory/4372-6-0x0000000005F50000-0x0000000005F62000-memory.dmp

Filesize
72KB

Download
memory/4372-0-0x000000007515E000-0x000000007515F000-memory.dmp

Filesize
4KB

Download
memory/4372-4-0x0000000075150000-0x0000000075900000-memory.dmp

Filesize
7.7MB

Download
memory/4372-3-0x0000000005290000-0x0000000005322000-memory.dmp

Filesize
584KB

Download
memory/4372-2-0x00000000057A0000-0x0000000005D44000-memory.dmp

Filesize
5.6MB

Download
memory/4372-1-0x00000000007D0000-0x000000000083C000-memory.dmp

Filesize
432KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads