quasar | 8e66d22baca31883f715287e49c4d505a026a78c45c213dc409e523a95aeed28

General

Target

8e66d22baca31883f715287e49c4d505a026a78c45c213dc409e523a95aeed28.exe
Size

3.1MB
MD5

1167ed297153d69816e2e8446ecc3507
SHA1

26258abcbb54f6b51b74516b9fedbbbf7c7ffbbf
SHA256

8e66d22baca31883f715287e49c4d505a026a78c45c213dc409e523a95aeed28
SHA512

1d1270ea6c217a27ac04b1a3dec63454f43a83f1ae86d0591868a68b1b762ac2592e71fe687751d1b8be6fbca9dd4138c1d48f16f251c0420001a44c5864ac27
SSDEEP

49152:CvvY52fyaSZOrPWluWBuGG5g5hVZ/qBxnLoGde9THHB72eh2NT:CvA52fyaSZOrPWluWBDG5g5h7/SO

Score

10^/10

quasar office04 spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

C2

127.0.0.1:80

Mutex

1c12234f-7765-40ab-aaf0-bb1cc31f293c

Attributes

encryption_key
D1A7DEB6F1ABF47AB3D04E42414608718783685B
install_name
000.exe
log_directory
Logs
reconnect_delay
3000
startup_key
000
subdirectory
000

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/2316-1-0x0000000000940000-0x0000000000C64000-memory.dmp	family_quasar
behavioral1/files/0x000900000001628b-5.dat	family_quasar
behavioral1/memory/2992-8-0x00000000001B0000-0x00000000004D4000-memory.dmp	family_quasar

Executes dropped EXE 1 IoCs

pid	Process
2992	000.exe

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files\000\000.exe	8e66d22baca31883f715287e49c4d505a026a78c45c213dc409e523a95aeed28.exe
File opened for modification	C:\Program Files\000\000.exe	8e66d22baca31883f715287e49c4d505a026a78c45c213dc409e523a95aeed28.exe

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

System Information Discovery
T1082

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
2792	schtasks.exe
2372	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2316	8e66d22baca31883f715287e49c4d505a026a78c45c213dc409e523a95aeed28.exe
Token: SeDebugPrivilege	2992	000.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2992	000.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
2992	000.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 2316 wrote to memory of 2792	2316	8e66d22baca31883f715287e49c4d505a026a78c45c213dc409e523a95aeed28.exe	31
PID 2316 wrote to memory of 2792	2316	8e66d22baca31883f715287e49c4d505a026a78c45c213dc409e523a95aeed28.exe	31
PID 2316 wrote to memory of 2792	2316	8e66d22baca31883f715287e49c4d505a026a78c45c213dc409e523a95aeed28.exe	31
PID 2316 wrote to memory of 2992	2316	8e66d22baca31883f715287e49c4d505a026a78c45c213dc409e523a95aeed28.exe	33
PID 2316 wrote to memory of 2992	2316	8e66d22baca31883f715287e49c4d505a026a78c45c213dc409e523a95aeed28.exe	33
PID 2316 wrote to memory of 2992	2316	8e66d22baca31883f715287e49c4d505a026a78c45c213dc409e523a95aeed28.exe	33
PID 2992 wrote to memory of 2372	2992	000.exe	34
PID 2992 wrote to memory of 2372	2992	000.exe	34
PID 2992 wrote to memory of 2372	2992	000.exe	34

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\8e66d22baca31883f715287e49c4d505a026a78c45c213dc409e523a95aeed28.exe
"C:\Users\Admin\AppData\Local\Temp\8e66d22baca31883f715287e49c4d505a026a78c45c213dc409e523a95aeed28.exe"
1⤵
- Drops file in Program Files directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2316
- C:\Windows\system32\schtasks.exe
  "schtasks" /create /tn "000" /sc ONLOGON /tr "C:\Program Files\000\000.exe" /rl HIGHEST /f
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:2792
- C:\Program Files\000\000.exe
  "C:\Program Files\000\000.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  - Suspicious use of WriteProcessMemory
  PID:2992
- - C:\Windows\system32\schtasks.exe
    "schtasks" /create /tn "000" /sc ONLOGON /tr "C:\Program Files\000\000.exe" /rl HIGHEST /f
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:2372

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

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Program Files\000\000.exe

Filesize
3.1MB

MD5
1167ed297153d69816e2e8446ecc3507

SHA1
26258abcbb54f6b51b74516b9fedbbbf7c7ffbbf

SHA256
8e66d22baca31883f715287e49c4d505a026a78c45c213dc409e523a95aeed28

SHA512
1d1270ea6c217a27ac04b1a3dec63454f43a83f1ae86d0591868a68b1b762ac2592e71fe687751d1b8be6fbca9dd4138c1d48f16f251c0420001a44c5864ac27

Download Submit
memory/2316-0-0x000007FEF60B3000-0x000007FEF60B4000-memory.dmp

Filesize
4KB

Download
memory/2316-1-0x0000000000940000-0x0000000000C64000-memory.dmp

Filesize
3.1MB

Download
memory/2316-2-0x000007FEF60B0000-0x000007FEF6A9C000-memory.dmp

Filesize
9.9MB

Download
memory/2316-9-0x000007FEF60B0000-0x000007FEF6A9C000-memory.dmp

Filesize
9.9MB

Download
memory/2992-7-0x000007FEF60B0000-0x000007FEF6A9C000-memory.dmp

Filesize
9.9MB

Download
memory/2992-8-0x00000000001B0000-0x00000000004D4000-memory.dmp

Filesize
3.1MB

Download
memory/2992-10-0x000007FEF60B0000-0x000007FEF6A9C000-memory.dmp

Filesize
9.9MB

Download
memory/2992-11-0x000007FEF60B0000-0x000007FEF6A9C000-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