quasar | 77153049f33480d1b665c68aa0732e531f963f9acb04b9e016baafeca3b54dd8

General

Target

BPLogger-main/BPLogger.rar
Size

1.2MB
MD5

02f7e1af9b8e6814a2ef3ebdd35dd908
SHA1

2b34deb211e851aad0e4978e6311b01a79a7a9be
SHA256

03894b7e34b167b23dbde4b660087d3bc0aef490097c8fe8dda1e7e5903d70f8
SHA512

a2ac2d110a36c99d790c4b54d7282e62e51a799a059716972022b5f59efb0f461f3c6e0ff5b8cc48a4ffc238577020248a22a35460f7218bbc046e431440b93c
SSDEEP

24576:gkpv3JUiN1ruQuR2MzauUYTQniyqJ1AM5e4QXDDb0fblR/2OXEzPyfvc:NB37ZIWuUiQnAJ1AMiXDDb6blUQEzPyM

Score

10^/10

quasar office04 discovery spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

C2

wefdwef-34180.portmap.host:34180

Mutex

c4be1726-3f86-4f80-bc7c-0779b06ffeeb

Attributes

encryption_key
97BF1FDCF446A7218FA05296FD8D8F0C41A6B1E7
install_name
Bootstrapper.exe
log_directory
Logs
reconnect_delay
3000
startup_key
Spotify
subdirectory
system32

Signatures

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

Quasar payload 2 IoCs

resource	yara_rule
behavioral4/files/0x0008000000023bf6-4.dat	family_quasar
behavioral4/memory/632-13-0x00000000007C0000-0x0000000000AE4000-memory.dmp	family_quasar

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2436272344-4274332273-444425594-1000\Control Panel\International\Geo\Nation	Bootstrapper.exe

Executes dropped EXE 2 IoCs

pid	Process
632	BPLogger.exe
5028	Bootstrapper.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
4092	PING.EXE

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
4092	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
544	schtasks.exe
1944	schtasks.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2760	7zFM.exe
2760	7zFM.exe
2760	7zFM.exe
2760	7zFM.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

description	pid	Process
Token: SeRestorePrivilege	2760	7zFM.exe
Token: 35	2760	7zFM.exe
Token: SeSecurityPrivilege	2760	7zFM.exe
Token: SeDebugPrivilege	632	BPLogger.exe
Token: SeDebugPrivilege	5028	Bootstrapper.exe

Suspicious use of FindShellTrayWindow 3 IoCs

pid	Process
2760	7zFM.exe
2760	7zFM.exe
5028	Bootstrapper.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
5028	Bootstrapper.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 2760 wrote to memory of 632	2760	7zFM.exe	87
PID 2760 wrote to memory of 632	2760	7zFM.exe	87
PID 632 wrote to memory of 544	632	BPLogger.exe	89
PID 632 wrote to memory of 544	632	BPLogger.exe	89
PID 632 wrote to memory of 5028	632	BPLogger.exe	91
PID 632 wrote to memory of 5028	632	BPLogger.exe	91
PID 5028 wrote to memory of 1944	5028	Bootstrapper.exe	94
PID 5028 wrote to memory of 1944	5028	Bootstrapper.exe	94
PID 5028 wrote to memory of 3244	5028	Bootstrapper.exe	96
PID 5028 wrote to memory of 3244	5028	Bootstrapper.exe	96
PID 3244 wrote to memory of 3076	3244	cmd.exe	98
PID 3244 wrote to memory of 3076	3244	cmd.exe	98
PID 3244 wrote to memory of 4092	3244	cmd.exe	99
PID 3244 wrote to memory of 4092	3244	cmd.exe	99

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:\Program Files\7-Zip\7zFM.exe
"C:\Program Files\7-Zip\7zFM.exe" "C:\Users\Admin\AppData\Local\Temp\BPLogger-main\BPLogger.rar"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:2760
- C:\Users\Admin\AppData\Local\Temp\7zO8CA3C5B7\BPLogger.exe
  "C:\Users\Admin\AppData\Local\Temp\7zO8CA3C5B7\BPLogger.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:632
- - C:\Windows\SYSTEM32\schtasks.exe
    "schtasks" /create /tn "Spotify" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\system32\Bootstrapper.exe" /rl HIGHEST /f
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:544
- - C:\Users\Admin\AppData\Roaming\system32\Bootstrapper.exe
    "C:\Users\Admin\AppData\Roaming\system32\Bootstrapper.exe"
    3⤵
    - Checks computer location settings
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of FindShellTrayWindow
    - Suspicious use of SendNotifyMessage
    - Suspicious use of WriteProcessMemory
    PID:5028
  - - C:\Windows\SYSTEM32\schtasks.exe
      "schtasks" /create /tn "Spotify" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\system32\Bootstrapper.exe" /rl HIGHEST /f
      4⤵
      Scheduled Task/Job: Scheduled Task
      PID:1944
  - - C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\9UsveWZ9AVUg.bat" "
      4⤵
      Suspicious use of WriteProcessMemory
      PID:3244
    - - C:\Windows\system32\chcp.com
        
        chcp 65001
        5⤵
        
        PID:3076
    - - C:\Windows\system32\PING.EXE
        
        ping -n 10 localhost
        5⤵
        System Network Configuration Discovery: Internet Connection Discovery
        Runs ping.exe
        
        PID:4092

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

2

T1012

Remote System Discovery

1

T1018

System Information Discovery

2

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\7zO8CA3C5B7\BPLogger.exe

Filesize
3.1MB

MD5
14b871855a9046ef9aedeec80f9c2d86

SHA1
32c0ad34f524748b76c090fc881b75b928341e7e

SHA256
b14b916cd2f188ea09035489056e0bff9f8cb8e4a30eff50172f86319fabc940

SHA512
7ada8280b9a5a4dcb427da5f7634335c191645614148ed550dbbbacfaed72e1e99202caedddc02f48dc73d96bf0ecd4d35c2ed2d6206e9b25efba4f29dcc8e96

Download Submit
C:\Users\Admin\AppData\Local\Temp\9UsveWZ9AVUg.bat

Filesize
215B

MD5
a543824b95dff998a57497d53bad7a38

SHA1
b4ddcac05157907651228e24186bf7d3f28df474

SHA256
d55e50f6ea79a91dee64d110b4106b083a4e5123f720ca4c6fa64c146fa12913

SHA512
2cd570d9022c04b0a171120aa9287c0d4ae0932d9daf6c74bdeebd569e2aecb6dc8e11e64fdedb3ed60281a4c4eae804ef5bb2e0fb0842153f954ead327e23b1

Download Submit
memory/632-12-0x00007FFA5A553000-0x00007FFA5A555000-memory.dmp

Filesize
8KB

Download
memory/632-13-0x00000000007C0000-0x0000000000AE4000-memory.dmp

Filesize
3.1MB

Download
memory/632-14-0x00007FFA5A550000-0x00007FFA5B011000-memory.dmp

Filesize
10.8MB

Download
memory/632-20-0x00007FFA5A550000-0x00007FFA5B011000-memory.dmp

Filesize
10.8MB

Download
memory/5028-21-0x000000001C2C0000-0x000000001C310000-memory.dmp

Filesize
320KB

Download
memory/5028-22-0x000000001C3D0000-0x000000001C482000-memory.dmp

Filesize
712KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads