quasar | fcd5b843d50ec2f973aaa27e54b6bf045931cc3cb8d9bea4edaade352fe0f7d5

Analysis

max time kernel
290s
max time network
290s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
02-06-2024 06:22

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General

Target

uni/Uni - Copy (17) - 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
Quasar is an open source Remote Access Tool.
trojan spyware quasar

Quasar payload 3 IoCs

Processes:

resource	yara_rule
behavioral15/memory/2240-1-0x00000000010B0000-0x000000000111C000-memory.dmp	family_quasar
\Users\Admin\AppData\Roaming\SubDir\Client.exe	family_quasar
behavioral15/memory/2592-10-0x0000000000890000-0x00000000008FC000-memory.dmp	family_quasar

Executes dropped EXE 2 IoCs

Processes:

Client.exeKe45SO72NdI9.exe

pid process

2592 Client.exe
1048 Ke45SO72NdI9.exe
Loads dropped DLL 2 IoCs

Processes:

Uni - Copy (17) - Copy.exeClient.exe

pid process

2240 Uni - Copy (17) - Copy.exe
2592 Client.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

2 ip-api.com
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

1436 schtasks.exe
2636 SCHTASKS.exe
2924 SCHTASKS.exe
2116 schtasks.exe

pid	process
2592	Client.exe
1048	Ke45SO72NdI9.exe

pid	process
2240	Uni - Copy (17) - Copy.exe
2592	Client.exe

flow	ioc
2	ip-api.com

pid	process
1436	schtasks.exe
2636	SCHTASKS.exe
2924	SCHTASKS.exe
2116	schtasks.exe

Modifies Internet Explorer settings 1 TTPs 9 IoCs

adware spyware

Modify Registry

T1112

Processes:

POWERPNT.EXE

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\ONBttnIE.dll/105"	POWERPNT.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\Contexts = "1"	POWERPNT.EXE
Key created	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000\Software\Microsoft\Internet Explorer\Toolbar	POWERPNT.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000\Software\Microsoft\Internet Explorer\Toolbar\ShowDiscussionButton = "Yes"	POWERPNT.EXE
Key created	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000\Software\Microsoft\Internet Explorer\MenuExt	POWERPNT.EXE
Key created	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote	POWERPNT.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\Contexts = "55"	POWERPNT.EXE
Key created	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel	POWERPNT.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\EXCEL.EXE/3000"	POWERPNT.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

POWERPNT.EXE

pid process

1876 POWERPNT.EXE
Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

POWERPNT.EXE

pid process

1876 POWERPNT.EXE

pid	process
1876	POWERPNT.EXE

pid	process
1876	POWERPNT.EXE

Suspicious use of AdjustPrivilegeToken 6 IoCs

Processes:

Uni - Copy (17) - Copy.exeClient.exeAUDIODG.EXE

description	pid	process
Token: SeDebugPrivilege	2240	Uni - Copy (17) - Copy.exe
Token: SeDebugPrivilege	2592	Client.exe
Token: 33	2680	AUDIODG.EXE
Token: SeIncBasePriorityPrivilege	2680	AUDIODG.EXE
Token: 33	2680	AUDIODG.EXE
Token: SeIncBasePriorityPrivilege	2680	AUDIODG.EXE

Suspicious use of SetWindowsHookEx 3 IoCs

Processes:

Client.exeKe45SO72NdI9.exePOWERPNT.EXE

pid process

2592 Client.exe
1048 Ke45SO72NdI9.exe
1876 POWERPNT.EXE

pid	process
2592	Client.exe
1048	Ke45SO72NdI9.exe
1876	POWERPNT.EXE

Suspicious use of WriteProcessMemory 38 IoCs

Processes:

Uni - Copy (17) - Copy.exeClient.exewmplayer.exePOWERPNT.EXE

description	pid	process	target process
PID 2240 wrote to memory of 2116	2240	Uni - Copy (17) - Copy.exe	schtasks.exe
PID 2240 wrote to memory of 2116	2240	Uni - Copy (17) - Copy.exe	schtasks.exe
PID 2240 wrote to memory of 2116	2240	Uni - Copy (17) - Copy.exe	schtasks.exe
PID 2240 wrote to memory of 2116	2240	Uni - Copy (17) - Copy.exe	schtasks.exe
PID 2240 wrote to memory of 2592	2240	Uni - Copy (17) - Copy.exe	Client.exe
PID 2240 wrote to memory of 2592	2240	Uni - Copy (17) - Copy.exe	Client.exe
PID 2240 wrote to memory of 2592	2240	Uni - Copy (17) - Copy.exe	Client.exe
PID 2240 wrote to memory of 2592	2240	Uni - Copy (17) - Copy.exe	Client.exe
PID 2240 wrote to memory of 2592	2240	Uni - Copy (17) - Copy.exe	Client.exe
PID 2240 wrote to memory of 2592	2240	Uni - Copy (17) - Copy.exe	Client.exe
PID 2240 wrote to memory of 2592	2240	Uni - Copy (17) - Copy.exe	Client.exe
PID 2592 wrote to memory of 1436	2592	Client.exe	schtasks.exe
PID 2592 wrote to memory of 1436	2592	Client.exe	schtasks.exe
PID 2592 wrote to memory of 1436	2592	Client.exe	schtasks.exe
PID 2592 wrote to memory of 1436	2592	Client.exe	schtasks.exe
PID 2240 wrote to memory of 2636	2240	Uni - Copy (17) - Copy.exe	SCHTASKS.exe
PID 2240 wrote to memory of 2636	2240	Uni - Copy (17) - Copy.exe	SCHTASKS.exe
PID 2240 wrote to memory of 2636	2240	Uni - Copy (17) - Copy.exe	SCHTASKS.exe
PID 2240 wrote to memory of 2636	2240	Uni - Copy (17) - Copy.exe	SCHTASKS.exe
PID 2592 wrote to memory of 1048	2592	Client.exe	Ke45SO72NdI9.exe
PID 2592 wrote to memory of 1048	2592	Client.exe	Ke45SO72NdI9.exe
PID 2592 wrote to memory of 1048	2592	Client.exe	Ke45SO72NdI9.exe
PID 2592 wrote to memory of 1048	2592	Client.exe	Ke45SO72NdI9.exe
PID 1636 wrote to memory of 2388	1636	wmplayer.exe	setup_wm.exe
PID 1636 wrote to memory of 2388	1636	wmplayer.exe	setup_wm.exe
PID 1636 wrote to memory of 2388	1636	wmplayer.exe	setup_wm.exe
PID 1636 wrote to memory of 2388	1636	wmplayer.exe	setup_wm.exe
PID 1636 wrote to memory of 2388	1636	wmplayer.exe	setup_wm.exe
PID 1636 wrote to memory of 2388	1636	wmplayer.exe	setup_wm.exe
PID 1636 wrote to memory of 2388	1636	wmplayer.exe	setup_wm.exe
PID 2592 wrote to memory of 2924	2592	Client.exe	SCHTASKS.exe
PID 2592 wrote to memory of 2924	2592	Client.exe	SCHTASKS.exe
PID 2592 wrote to memory of 2924	2592	Client.exe	SCHTASKS.exe
PID 2592 wrote to memory of 2924	2592	Client.exe	SCHTASKS.exe
PID 1876 wrote to memory of 2648	1876	POWERPNT.EXE	splwow64.exe
PID 1876 wrote to memory of 2648	1876	POWERPNT.EXE	splwow64.exe
PID 1876 wrote to memory of 2648	1876	POWERPNT.EXE	splwow64.exe
PID 1876 wrote to memory of 2648	1876	POWERPNT.EXE	splwow64.exe

C:\Users\Admin\AppData\Local\Temp\uni\Uni - Copy (17) - Copy.exe
"C:\Users\Admin\AppData\Local\Temp\uni\Uni - Copy (17) - Copy.exe"
1⤵
- Loads dropped DLL
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2240

C:\Windows\SysWOW64\schtasks.exe
"schtasks" /create /tn "SeroXen" /sc ONLOGON /tr "C:\Users\Admin\AppData\Local\Temp\uni\Uni - Copy (17) - Copy.exe" /rl HIGHEST /f
2⤵
- Creates scheduled task(s)
PID:2116

C:\Users\Admin\AppData\Roaming\SubDir\Client.exe
"C:\Users\Admin\AppData\Roaming\SubDir\Client.exe"
2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2592

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:1436

C:\Users\Admin\AppData\Local\Temp\Ke45SO72NdI9.exe
"C:\Users\Admin\AppData\Local\Temp\Ke45SO72NdI9.exe"
3⤵
- Executes dropped EXE
- Suspicious use of SetWindowsHookEx
PID:1048

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:2924

C:\Windows\SysWOW64\SCHTASKS.exe
"SCHTASKS.exe" /create /tn "$77Uni - Copy (17) - Copy.exe" /tr "'C:\Users\Admin\AppData\Local\Temp\uni\Uni - Copy (17) - Copy.exe'" /sc onlogon /rl HIGHEST
2⤵
- Creates scheduled task(s)
PID:2636

C:\Windows\system32\AUDIODG.EXE
C:\Windows\system32\AUDIODG.EXE 0x48c
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2680

C:\Program Files (x86)\Windows Media Player\wmplayer.exe
"C:\Program Files (x86)\Windows Media Player\wmplayer.exe" /Play -Embedding
1⤵
- Suspicious use of WriteProcessMemory
PID:1636

C:\Program Files (x86)\Windows Media Player\setup_wm.exe
"C:\Program Files (x86)\Windows Media Player\setup_wm.exe" /RunOnce:"C:\Program Files (x86)\Windows Media Player\wmplayer.exe" /Play -Embedding
2⤵
PID:2388

C:\Windows\SysWOW64\DllHost.exe
C:\Windows\SysWOW64\DllHost.exe /Processid:{06622D85-6856-4460-8DE1-A81921B41C4B}
1⤵
PID:1768

C:\Program Files (x86)\Microsoft Office\Office14\POWERPNT.EXE
"C:\Program Files (x86)\Microsoft Office\Office14\POWERPNT.EXE" "C:\Users\Admin\Desktop\DenyOut.odp"
1⤵
- Modifies Internet Explorer settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1876

C:\Windows\splwow64.exe
C:\Windows\splwow64.exe 12288
2⤵
PID:2648

C:\Program Files (x86)\Microsoft Office\Office14\POWERPNT.EXE
"C:\Program Files (x86)\Microsoft Office\Office14\POWERPNT.EXE" "C:\Users\Admin\Desktop\DenyOut.odp"
1⤵
PID:1240

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

Modify Registry

T1112

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\Temp\4D8CDDB.tmp
Filesize
65B

MD5
54307dc5eb42a7cc60f040e3ed14ca8b

SHA1
6e652f34d5fcd875b33a72ccde11346f20a02670

SHA256
7a5b94fa3076961e5755d33b799656a517a5c9373877ddec8a9f488a1e4b1202

SHA512
0fc792c12c0675c1b6f4f4e032d5ecd63629f4f4b9f711473ade654b794fb66fba6ac05b53414248263f61a73458ecc62def0042374cf208db412c8691d8ef8d

Download Submit
C:\Users\Admin\AppData\Local\Temp\Ke45SO72NdI9.exe
Filesize
277KB

MD5
dac0c5b2380cbdd93b46763427c9f8df

SHA1
038089e1a0ac8375be797fc3ce7ae719abc72834

SHA256
d02538788fb57f568ece292f5fc20e9775c86d504de67f57e22534f84adc73c6

SHA512
05cc1f6bf25a6545a06c735ae7a4a7fc25489bdb9fbc8d5797be623982662c4a93cba2d20bfe14313ef1548eaaa691e55fabdd8e3d3e45de9ab42dc62f9a7023

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp41109.WMC\allservices.xml
Filesize
546B

MD5
df03e65b8e082f24dab09c57bc9c6241

SHA1
6b0dacbf38744c9a381830e6a5dc4c71bd7cedbf

SHA256
155b9c588061c71832af329fafa5678835d9153b8fbb7592195ae953d0c455ba

SHA512
ef1cc8d27fbc5da5daab854c933d3914b84ee539d4d2f0126dc1a04a830c5599e39a923c80257653638b1b99b0073a7174cc164be5887181730883c752ba2f99

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp42342.WMC\serviceinfo.xml
Filesize
523B

MD5
d58da90d6dc51f97cb84dfbffe2b2300

SHA1
5f86b06b992a3146cb698a99932ead57a5ec4666

SHA256
93acdb79543d9248ca3fca661f3ac287e6004e4b3dafd79d4c4070794ffbf2ad

SHA512
7f1e95e5aa4c8a0e4c967135c78f22f4505f2a48bbc619924d0096bf4a94d469389b9e8488c12edacfba819517b8376546687d1145660ad1f49d8c20a744e636

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

MD5
b70fdac25a99501e3cae11f1b775249e

SHA1
3c59226479bfdcd1b2927bcfb1a7516d4cb8dd71

SHA256
51ff3eb450a786c1aaa75ff889f2fd256412a7b75d04277fdf9fcccc20e57246

SHA512
43f0d5d6e5f0d5febba537c109ffdbc250bbb6e9725e635a43ec975b0353048eaeee50b6e9274cd5e072ea6b0cea32439bd37408b2528832f467f2075f74ca44

Download Submit
memory/1876-37-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/2240-1-0x00000000010B0000-0x000000000111C000-memory.dmp

Filesize
432KB

Download
memory/2240-2-0x0000000074150000-0x000000007483E000-memory.dmp

Filesize
6.9MB

Download
memory/2240-0-0x000000007415E000-0x000000007415F000-memory.dmp

Filesize
4KB

Download
memory/2240-14-0x0000000074150000-0x000000007483E000-memory.dmp

Filesize
6.9MB

Download
memory/2592-10-0x0000000000890000-0x00000000008FC000-memory.dmp

Filesize
432KB

Download
memory/2592-16-0x0000000074150000-0x000000007483E000-memory.dmp

Filesize
6.9MB

Download
memory/2592-15-0x0000000074150000-0x000000007483E000-memory.dmp

Filesize
6.9MB

Download
memory/2592-36-0x0000000074150000-0x000000007483E000-memory.dmp

Filesize
6.9MB

Download
memory/2592-12-0x0000000074150000-0x000000007483E000-memory.dmp

Filesize
6.9MB

Download
memory/2592-11-0x0000000074150000-0x000000007483E000-memory.dmp

Filesize
6.9MB

Download