quasar | e7d8e1b13c833d49fcc46a03d34ff18b7c93bd86bd0764828fa68d3d9eed2bbe

General

Target

Unify.exe
Size

409KB
MD5

54db32b9d5cab2c1dea1907cf4712b1d
SHA1

812f28828735a92effd2187e155d9ed3f0e915b3
SHA256

e7d8e1b13c833d49fcc46a03d34ff18b7c93bd86bd0764828fa68d3d9eed2bbe
SHA512

6a13febe964f3f639e7d017f58c2f6631c18bea5a1ac716efa49a1c5306ecd2708cf92f133a9fcd8dc22850e661522a98f23c0fb7cb09752bb96a6d50bb69163
SSDEEP

6144:0MP9p1kREG60olVji9QzNg/IiSjFqBFK6WbMN6Y44vZqJBWAb7yMTj:fpiREGJ2ji9QyAhK/N6gBqJBj7yMTj

Score

10^/10

quasar slave spyware trojan

Malware Config

Extracted

Family

quasar

Version

3.1.5

Botnet

Slave

C2

192.168.1.20:4782

localhost:4782

Mutex

$Sxr-3vDee7FzoJnhqjuE3n

Attributes

encryption_key
hwZQsCIcvotNKosjYueb
install_name
$srr-powershell.exe
log_directory
Logs
reconnect_delay
1000
startup_key
$srr-mstha
subdirectory
Windows

Signatures

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

Quasar payload 3 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2664-1-0x0000000000C80000-0x0000000000CEC000-memory.dmp	family_quasar
\Users\Admin\AppData\Roaming\Windows\$srr-powershell.exe	family_quasar
behavioral1/memory/2460-10-0x00000000000C0000-0x000000000012C000-memory.dmp	family_quasar

Executes dropped EXE 1 IoCs

Processes:

$srr-powershell.exe

pid process

2460 $srr-powershell.exe
Loads dropped DLL 1 IoCs

Processes:

Unify.exe

pid process

2664 Unify.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 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

2448 schtasks.exe
2384 SCHTASKS.exe
2488 schtasks.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

Unify.exe$srr-powershell.exe

description pid process

Token: SeDebugPrivilege 2664 Unify.exe
Token: SeDebugPrivilege 2460 $srr-powershell.exe

pid	process
2460	$srr-powershell.exe

pid	process
2664	Unify.exe

flow	ioc
2	ip-api.com

pid	process
2448	schtasks.exe
2384	SCHTASKS.exe
2488	schtasks.exe

description	pid	process
Token: SeDebugPrivilege	2664	Unify.exe
Token: SeDebugPrivilege	2460	$srr-powershell.exe

Suspicious use of WriteProcessMemory 16 IoCs

Processes:

Unify.exe$srr-powershell.exe

description	pid	process	target process
PID 2664 wrote to memory of 2488	2664	Unify.exe	schtasks.exe
PID 2664 wrote to memory of 2488	2664	Unify.exe	schtasks.exe
PID 2664 wrote to memory of 2488	2664	Unify.exe	schtasks.exe
PID 2664 wrote to memory of 2488	2664	Unify.exe	schtasks.exe
PID 2664 wrote to memory of 2460	2664	Unify.exe	$srr-powershell.exe
PID 2664 wrote to memory of 2460	2664	Unify.exe	$srr-powershell.exe
PID 2664 wrote to memory of 2460	2664	Unify.exe	$srr-powershell.exe
PID 2664 wrote to memory of 2460	2664	Unify.exe	$srr-powershell.exe
PID 2460 wrote to memory of 2448	2460	$srr-powershell.exe	schtasks.exe
PID 2460 wrote to memory of 2448	2460	$srr-powershell.exe	schtasks.exe
PID 2460 wrote to memory of 2448	2460	$srr-powershell.exe	schtasks.exe
PID 2460 wrote to memory of 2448	2460	$srr-powershell.exe	schtasks.exe
PID 2664 wrote to memory of 2384	2664	Unify.exe	SCHTASKS.exe
PID 2664 wrote to memory of 2384	2664	Unify.exe	SCHTASKS.exe
PID 2664 wrote to memory of 2384	2664	Unify.exe	SCHTASKS.exe
PID 2664 wrote to memory of 2384	2664	Unify.exe	SCHTASKS.exe

C:\Users\Admin\AppData\Local\Temp\Unify.exe
"C:\Users\Admin\AppData\Local\Temp\Unify.exe"
1⤵
- Loads dropped DLL
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2664

C:\Windows\SysWOW64\schtasks.exe
"schtasks" /create /tn "$srr-mstha" /sc ONLOGON /tr "C:\Users\Admin\AppData\Local\Temp\Unify.exe" /rl HIGHEST /f
2⤵
- Creates scheduled task(s)
PID:2488

C:\Users\Admin\AppData\Roaming\Windows\$srr-powershell.exe
"C:\Users\Admin\AppData\Roaming\Windows\$srr-powershell.exe"
2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2460

C:\Windows\SysWOW64\schtasks.exe
"schtasks" /create /tn "$srr-mstha" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\Windows\$srr-powershell.exe" /rl HIGHEST /f
3⤵
- Creates scheduled task(s)
PID:2448

C:\Windows\SysWOW64\SCHTASKS.exe
"SCHTASKS.exe" /create /tn "$77Unify.exe" /tr "'C:\Users\Admin\AppData\Local\Temp\Unify.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

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

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Downloads

\Users\Admin\AppData\Roaming\Windows\$srr-powershell.exe
Filesize
409KB

MD5
54db32b9d5cab2c1dea1907cf4712b1d

SHA1
812f28828735a92effd2187e155d9ed3f0e915b3

SHA256
e7d8e1b13c833d49fcc46a03d34ff18b7c93bd86bd0764828fa68d3d9eed2bbe

SHA512
6a13febe964f3f639e7d017f58c2f6631c18bea5a1ac716efa49a1c5306ecd2708cf92f133a9fcd8dc22850e661522a98f23c0fb7cb09752bb96a6d50bb69163

Download Submit
memory/2460-10-0x00000000000C0000-0x000000000012C000-memory.dmp

Filesize
432KB

Download
memory/2460-11-0x0000000074DF0000-0x00000000754DE000-memory.dmp

Filesize
6.9MB

Download
memory/2460-12-0x0000000074DF0000-0x00000000754DE000-memory.dmp

Filesize
6.9MB

Download
memory/2460-14-0x0000000074DF0000-0x00000000754DE000-memory.dmp

Filesize
6.9MB

Download
memory/2664-0-0x0000000074DFE000-0x0000000074DFF000-memory.dmp

Filesize
4KB

Download
memory/2664-1-0x0000000000C80000-0x0000000000CEC000-memory.dmp

Filesize
432KB

Download
memory/2664-2-0x0000000074DF0000-0x00000000754DE000-memory.dmp

Filesize
6.9MB

Download
memory/2664-13-0x0000000074DF0000-0x00000000754DE000-memory.dmp

Filesize
6.9MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads