quasar | 149ef8e77fbe162157f8462892235211b9f926a3454d615ad4c59e854e48ec82

General

Target

Powershell.exe
Size

409KB
MD5

4286aedc2a233ab74deb2670fa484866
SHA1

860fdc6876a4948f5e352aa50910b9f13607c3fb
SHA256

149ef8e77fbe162157f8462892235211b9f926a3454d615ad4c59e854e48ec82
SHA512

fc3c7885a9f6af0a2d38375f1d256128a474a998c2359938955fff6e45d216dfa1942ccba2359b18f263219d95004b9e976524ef26c967c58cb29a7c6c93f097
SSDEEP

12288:UpsD64e1MDEArEiVTqkllSmxmeN1AKXiLNk2+XRnS:ksG4kMsaGkllvxvuKyZ1N

Score

10^/10

quasar seroxen | v3.1.5 |spyware trojan

Malware Config

Extracted

Family

quasar

Version

3.1.5

Botnet

SeroXen | v3.1.5 |

C2

runderscore00-25501.portmap.host:25501

Mutex

$Sxr-jy6vh8CtEJL5ceZuIb

Attributes

encryption_key
JCa22tR8WnO00adn2TuE
install_name
$sxr-powershell.exe
log_directory
$sxr-Logs
reconnect_delay
3000
startup_key
Powershell
subdirectory
$sxr-seroxen2

Signatures

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

Quasar payload 1 IoCs

Processes:

resource	yara_rule
behavioral3/memory/2120-1-0x0000000000E80000-0x0000000000EEC000-memory.dmp	family_quasar

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

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

System Information Discovery
T1082
Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task/Job
T1053

Processes:

SCHTASKS.exe

pid process

2384 SCHTASKS.exe
Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery
T1018

Processes:

PING.EXE

pid process

3872 PING.EXE
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

Powershell.exe

description pid process

Token: SeDebugPrivilege 2120 Powershell.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

Powershell.exe

pid process

2120 Powershell.exe

flow	ioc
1	ip-api.com

pid	process
2384	SCHTASKS.exe

pid	process
3872	PING.EXE

description	pid	process
Token: SeDebugPrivilege	2120	Powershell.exe

pid	process
2120	Powershell.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

Powershell.execmd.exe

description	pid	process	target process
PID 2120 wrote to memory of 948	2120	Powershell.exe	cmd.exe
PID 2120 wrote to memory of 948	2120	Powershell.exe	cmd.exe
PID 2120 wrote to memory of 948	2120	Powershell.exe	cmd.exe
PID 948 wrote to memory of 1224	948	cmd.exe	chcp.com
PID 948 wrote to memory of 1224	948	cmd.exe	chcp.com
PID 948 wrote to memory of 1224	948	cmd.exe	chcp.com
PID 948 wrote to memory of 3872	948	cmd.exe	PING.EXE
PID 948 wrote to memory of 3872	948	cmd.exe	PING.EXE
PID 948 wrote to memory of 3872	948	cmd.exe	PING.EXE
PID 2120 wrote to memory of 2384	2120	Powershell.exe	SCHTASKS.exe
PID 2120 wrote to memory of 2384	2120	Powershell.exe	SCHTASKS.exe
PID 2120 wrote to memory of 2384	2120	Powershell.exe	SCHTASKS.exe

C:\Users\Admin\AppData\Local\Temp\Powershell.exe
"C:\Users\Admin\AppData\Local\Temp\Powershell.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2120

C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\L1KUprPdALvB.bat" "
2⤵
- Suspicious use of WriteProcessMemory
PID:948

C:\Windows\SysWOW64\chcp.com
chcp 65001
3⤵
PID:1224

C:\Windows\SysWOW64\PING.EXE
ping -n 10 localhost
3⤵
- Runs ping.exe
PID:3872

C:\Windows\SysWOW64\SCHTASKS.exe
"SCHTASKS.exe" /create /tn "$77Powershell.exe" /tr "'C:\Users\Admin\AppData\Local\Temp\Powershell.exe'" /sc onlogon /rl HIGHEST
2⤵
- Creates scheduled task(s)
PID:2384

Network

MITRE ATT&CK Matrix ATT&CK v13

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

System Information Discovery

1

T1082

Remote System Discovery

1

T1018

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

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Downloads

C:\Users\Admin\AppData\Local\Temp\L1KUprPdALvB.bat
Filesize
267B

MD5
b3124f5b2d13f9d0fb0dca7b627a4886

SHA1
2362ef11bb5588ecc74abaf9e6c32428f5f7dfd1

SHA256
41a0af3d45dea4c152c599b650175692b591347a2e919d77b6d7e16cda7b617c

SHA512
824ae50b75f3b6d1b91cfaa92c10c6e6aede78f779d53c8e7282c4e9d9493b59392348d3bd3280017bfc14d4d47c93ee0f6b61097cf92b9c3ab07b383cd70d7b

Download Submit
C:\Users\Admin\AppData\Roaming\$sxr-Logs\05-29-~1
Filesize
224B

MD5
cb9dc9c86d8e9d93e66515042be690ba

SHA1
fc5df9d77f18633a5c76883392c7f2dafb40d496

SHA256
2607ce9021f0c7cfe4e8714430a1a9fe37108f8d957702332813ea444ed856d5

SHA512
a4d343e44adea98af4f7097011837a9d58d4adf6a364708567e9fcc311dac14fc99b6e9790bca92959337f8eafcd2351db4dc90a4a47317c123a7b543a2fc401

Download Submit
memory/2120-6-0x00000000066C0000-0x00000000066D2000-memory.dmp

Filesize
72KB

Download
memory/2120-3-0x0000000005A30000-0x0000000005AC2000-memory.dmp

Filesize
584KB

Download
memory/2120-4-0x0000000074EF0000-0x00000000756A1000-memory.dmp

Filesize
7.7MB

Download
memory/2120-5-0x00000000059A0000-0x0000000005A06000-memory.dmp

Filesize
408KB

Download
memory/2120-0-0x0000000074EFE000-0x0000000074EFF000-memory.dmp

Filesize
4KB

Download
memory/2120-7-0x0000000006C10000-0x0000000006C4C000-memory.dmp

Filesize
240KB

Download
memory/2120-9-0x00000000070D0000-0x00000000070DA000-memory.dmp

Filesize
40KB

Download
memory/2120-10-0x0000000074EFE000-0x0000000074EFF000-memory.dmp

Filesize
4KB

Download
memory/2120-11-0x0000000074EF0000-0x00000000756A1000-memory.dmp

Filesize
7.7MB

Download
memory/2120-2-0x0000000005FE0000-0x0000000006586000-memory.dmp

Filesize
5.6MB

Download
memory/2120-17-0x0000000074EF0000-0x00000000756A1000-memory.dmp

Filesize
7.7MB

Download
memory/2120-1-0x0000000000E80000-0x0000000000EEC000-memory.dmp

Filesize
432KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads