quasar | 38be048dda9dfebcea59c2cbf3cf2abb971b96636aefabc8cafa5359efb63bc2

General

Target

Solara V3/SolaraV3.exe
Size

3.1MB
MD5

3db0c6fb25d98ede3749c5c296227708
SHA1

5d7843d185e9d7f56490bd03094f49c1444fa92a
SHA256

604e26e36c395712913a141ef96bc461385eea54d2182d170196dfee458ea82f
SHA512

461df5b25d7d14d340729177a987f254425d0bf57ca6f00853278d7640c40b6e52966a6465c0add70193fce2fc7a66555f1338e6a3f9eb28e85f3f5bab64b452
SSDEEP

49152:xvrI22SsaNYfdPBldt698dBcjHE82wvBx5ZoGdD3THHB72eh2NT:xvU22SsaNYfdPBldt6+dBcjHiwr

Score

10^/10

quasar robot discovery spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

robot

C2

tcp://quasarrat12345-50279.portmap.host:50279

Mutex

5b3b6ef6-1f5c-4cf2-a902-f38fc18c6f74

Attributes

encryption_key
044C06AD5B6394C7D3CCD0919FA2C67D30EA87D4
install_name
SolaraV3.exe
log_directory
Logs
reconnect_delay
3000
startup_key
Windows Update
subdirectory
SubDir

Signatures

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

Quasar payload 3 IoCs

resource	yara_rule
behavioral1/memory/2500-1-0x0000000000FA0000-0x00000000012C8000-memory.dmp	family_quasar
behavioral1/files/0x00060000000194d7-6.dat	family_quasar
behavioral1/memory/2520-10-0x0000000000210000-0x0000000000538000-memory.dmp	family_quasar

Executes dropped EXE 1 IoCs

pid	Process
2520	SolaraV3.exe

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

System Information Discovery
T1082

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 1 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
2084	PING.EXE

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2084	PING.EXE

Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
2060	schtasks.exe
2424	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2500	SolaraV3.exe
Token: SeDebugPrivilege	2520	SolaraV3.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2520	SolaraV3.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 2500 wrote to memory of 2060	2500	SolaraV3.exe	30
PID 2500 wrote to memory of 2060	2500	SolaraV3.exe	30
PID 2500 wrote to memory of 2060	2500	SolaraV3.exe	30
PID 2500 wrote to memory of 2520	2500	SolaraV3.exe	32
PID 2500 wrote to memory of 2520	2500	SolaraV3.exe	32
PID 2500 wrote to memory of 2520	2500	SolaraV3.exe	32
PID 2520 wrote to memory of 2424	2520	SolaraV3.exe	33
PID 2520 wrote to memory of 2424	2520	SolaraV3.exe	33
PID 2520 wrote to memory of 2424	2520	SolaraV3.exe	33
PID 2520 wrote to memory of 2736	2520	SolaraV3.exe	35
PID 2520 wrote to memory of 2736	2520	SolaraV3.exe	35
PID 2520 wrote to memory of 2736	2520	SolaraV3.exe	35
PID 2736 wrote to memory of 2592	2736	cmd.exe	37
PID 2736 wrote to memory of 2592	2736	cmd.exe	37
PID 2736 wrote to memory of 2592	2736	cmd.exe	37
PID 2736 wrote to memory of 2084	2736	cmd.exe	38
PID 2736 wrote to memory of 2084	2736	cmd.exe	38
PID 2736 wrote to memory of 2084	2736	cmd.exe	38

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Users\Admin\AppData\Local\Temp\Solara V3\SolaraV3.exe
"C:\Users\Admin\AppData\Local\Temp\Solara V3\SolaraV3.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2500
- C:\Windows\system32\schtasks.exe
  "schtasks" /create /tn "Windows Update" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\SolaraV3.exe" /rl HIGHEST /f
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:2060
- C:\Users\Admin\AppData\Roaming\SubDir\SolaraV3.exe
  "C:\Users\Admin\AppData\Roaming\SubDir\SolaraV3.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2520
- - C:\Windows\system32\schtasks.exe
    "schtasks" /create /tn "Windows Update" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\SolaraV3.exe" /rl HIGHEST /f
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:2424
- - C:\Windows\system32\cmd.exe
    cmd /c ""C:\Users\Admin\AppData\Local\Temp\RivPvmBguLkV.bat" "
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2736
  - - C:\Windows\system32\chcp.com
      chcp 65001
      4⤵
      PID:2592
  - - C:\Windows\system32\PING.EXE
      ping -n 10 localhost
      4⤵
      System Network Configuration Discovery: Internet Connection Discovery
      Runs ping.exe
      PID:2084

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

Remote System Discovery

1

T1018

System Information Discovery

1

T1082

System Network Configuration Discovery

1

T1016

Internet Connection Discovery

1

T1016.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\RivPvmBguLkV.bat

Filesize
209B

MD5
5b44dab0cf884446d1cfcbcfbc64ef7e

SHA1
d2378e00ecc136955b9b0c96df2e18da574ae226

SHA256
974fb5649fdd388d024e72894124b75ae1786069195fabc35c42ba4c9c99e0c9

SHA512
d44ec7b7e441bb20b1e67ca55dcb6278817a50374618a8ec444e39cc34e7e4a76f51a95adda27183d5e581fc7e700f3f690b82641c4f4a05b1afeb37cf495d06

Download Submit
C:\Users\Admin\AppData\Roaming\SubDir\SolaraV3.exe

Filesize
3.1MB

MD5
3db0c6fb25d98ede3749c5c296227708

SHA1
5d7843d185e9d7f56490bd03094f49c1444fa92a

SHA256
604e26e36c395712913a141ef96bc461385eea54d2182d170196dfee458ea82f

SHA512
461df5b25d7d14d340729177a987f254425d0bf57ca6f00853278d7640c40b6e52966a6465c0add70193fce2fc7a66555f1338e6a3f9eb28e85f3f5bab64b452

Download Submit
memory/2500-0-0x000007FEF5DC3000-0x000007FEF5DC4000-memory.dmp

Filesize
4KB

Download
memory/2500-1-0x0000000000FA0000-0x00000000012C8000-memory.dmp

Filesize
3.2MB

Download
memory/2500-2-0x000007FEF5DC0000-0x000007FEF67AC000-memory.dmp

Filesize
9.9MB

Download
memory/2500-8-0x000007FEF5DC0000-0x000007FEF67AC000-memory.dmp

Filesize
9.9MB

Download
memory/2520-9-0x000007FEF5DC0000-0x000007FEF67AC000-memory.dmp

Filesize
9.9MB

Download
memory/2520-10-0x0000000000210000-0x0000000000538000-memory.dmp

Filesize
3.2MB

Download
memory/2520-11-0x000007FEF5DC0000-0x000007FEF67AC000-memory.dmp

Filesize
9.9MB

Download
memory/2520-20-0x000007FEF5DC0000-0x000007FEF67AC000-memory.dmp

Filesize
9.9MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads