quasar | 864bec690da391f258de447606ac18baa79672b665ba321a4da67ed59d567cad | Triage

Analysis

max time kernel
30s
max time network
18s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
18/01/2025, 22:45 UTC

Sharing

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General

Target

Test2.exe
Size

3.1MB
MD5

7f888b6cbd5062a7558eea61eb9a9ca2
SHA1

2acfb5c3e7b8e569ea52397154b9b3ffb44e7d87
SHA256

864bec690da391f258de447606ac18baa79672b665ba321a4da67ed59d567cad
SHA512

7da70e844e0fce4b4bbc70db89503b95b6514cabf9ce9cf66fed643f6c11aafc5e7a8f385b5d16f7fa802cc47c9200bf486030834551d14c55078307ef7e93d8
SSDEEP

49152:/v2lL26AaNeWgPhlmVqvMQ7XSKKQSYmzwXoGdVTHHB72eh2NT:/v2L26AaNeWgPhlmVqkQ7XSKKQSq

Score

10^/10

quasar office04 discovery spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

C2

llordiWasHere-55715.portmap.host:55715

Mutex

124c5996-13c0-46a2-804a-191042a109db

Attributes

encryption_key
5F48258CBD7D9014A9443146E8A3D837D1715CAE
install_name
Client.exe
log_directory
Logs
reconnect_delay
3000
startup_key
Quasar Client Startup
subdirectory
SubDir

Signatures

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

Quasar payload 4 IoCs

resource	yara_rule
behavioral1/memory/2296-1-0x0000000001330000-0x0000000001654000-memory.dmp	family_quasar
behavioral1/files/0x0009000000016ccc-6.dat	family_quasar
behavioral1/memory/1408-8-0x0000000000FE0000-0x0000000001304000-memory.dmp	family_quasar
behavioral1/memory/2956-34-0x00000000013E0000-0x0000000001704000-memory.dmp	family_quasar

Executes dropped EXE 3 IoCs

pid	Process
1408	Client.exe
2760	Client.exe
2956	Client.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 2 IoCs

Adversaries may check for Internet connectivity on compromised systems.

Internet Connection Discovery

pid	Process
2188	PING.EXE
2712	PING.EXE

Runs ping.exe 1 TTPs 2 IoCs

Remote System Discovery

pid	Process
2188	PING.EXE
2712	PING.EXE

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	2296	Test2.exe
Token: SeDebugPrivilege	1408	Client.exe
Token: SeDebugPrivilege	2760	Client.exe
Token: SeDebugPrivilege	2956	Client.exe

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
1408	Client.exe
2760	Client.exe

Suspicious use of SendNotifyMessage 2 IoCs

pid	Process
1408	Client.exe
2760	Client.exe

Suspicious use of WriteProcessMemory 27 IoCs

description	pid	Process	procid_target
PID 2296 wrote to memory of 1408	2296	Test2.exe	31
PID 2296 wrote to memory of 1408	2296	Test2.exe	31
PID 2296 wrote to memory of 1408	2296	Test2.exe	31
PID 1408 wrote to memory of 1644	1408	Client.exe	32
PID 1408 wrote to memory of 1644	1408	Client.exe	32
PID 1408 wrote to memory of 1644	1408	Client.exe	32
PID 1644 wrote to memory of 1648	1644	cmd.exe	34
PID 1644 wrote to memory of 1648	1644	cmd.exe	34
PID 1644 wrote to memory of 1648	1644	cmd.exe	34
PID 1644 wrote to memory of 2712	1644	cmd.exe	35
PID 1644 wrote to memory of 2712	1644	cmd.exe	35
PID 1644 wrote to memory of 2712	1644	cmd.exe	35
PID 1644 wrote to memory of 2760	1644	cmd.exe	36
PID 1644 wrote to memory of 2760	1644	cmd.exe	36
PID 1644 wrote to memory of 2760	1644	cmd.exe	36
PID 2760 wrote to memory of 1688	2760	Client.exe	37
PID 2760 wrote to memory of 1688	2760	Client.exe	37
PID 2760 wrote to memory of 1688	2760	Client.exe	37
PID 1688 wrote to memory of 2372	1688	cmd.exe	39
PID 1688 wrote to memory of 2372	1688	cmd.exe	39
PID 1688 wrote to memory of 2372	1688	cmd.exe	39
PID 1688 wrote to memory of 2188	1688	cmd.exe	40
PID 1688 wrote to memory of 2188	1688	cmd.exe	40
PID 1688 wrote to memory of 2188	1688	cmd.exe	40
PID 1688 wrote to memory of 2956	1688	cmd.exe	41
PID 1688 wrote to memory of 2956	1688	cmd.exe	41
PID 1688 wrote to memory of 2956	1688	cmd.exe	41

C:\Users\Admin\AppData\Local\Temp\Test2.exe
"C:\Users\Admin\AppData\Local\Temp\Test2.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2296
- C:\Users\Admin\AppData\Roaming\SubDir\Client.exe
  "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  - Suspicious use of WriteProcessMemory
  PID:1408
- - C:\Windows\system32\cmd.exe
    cmd /c ""C:\Users\Admin\AppData\Local\Temp\lzY54pJcYq4K.bat" "
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1644
  - - C:\Windows\system32\chcp.com
      chcp 65001
      4⤵
      PID:1648
  - - C:\Windows\system32\PING.EXE
      ping -n 10 localhost
      4⤵
      System Network Configuration Discovery: Internet Connection Discovery
      Runs ping.exe
      PID:2712
  - - C:\Users\Admin\AppData\Roaming\SubDir\Client.exe
      "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe"
      4⤵
      Executes dropped EXE
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of FindShellTrayWindow
      Suspicious use of SendNotifyMessage
      Suspicious use of WriteProcessMemory
      PID:2760
    - - C:\Windows\system32\cmd.exe
        
        cmd /c ""C:\Users\Admin\AppData\Local\Temp\vbDfdpq6ywbl.bat" "
        5⤵
        Suspicious use of WriteProcessMemory
        
        PID:1688
      - C:\Windows\system32\chcp.com
        
        chcp 65001
        6⤵
        
        PID:2372
      - C:\Windows\system32\PING.EXE
        
        ping -n 10 localhost
        6⤵
        System Network Configuration Discovery: Internet Connection Discovery
        Runs ping.exe
        
        PID:2188
      - C:\Users\Admin\AppData\Roaming\SubDir\Client.exe
        
        "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe"
        6⤵
        Executes dropped EXE
        Suspicious use of AdjustPrivilegeToken
        
        PID:2956

Network

DNS

llordiWasHere-55715.portmap.host

Client.exe

Remote address:

8.8.8.8:53

Request

llordiWasHere-55715.portmap.host

IN A

Response

No results found

8.8.8.8:53

llordiWasHere-55715.portmap.host

dns

Client.exe

78 B
171 B
1
1

DNS Request

llordiWasHere-55715.portmap.host

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Remote System Discovery

System Information Discovery

System Network Configuration Discovery

Internet Connection Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\lzY54pJcYq4K.bat

Filesize
207B

MD5
7e423cf5c0ca7b2d2cf8bc2ab10dc407

SHA1
925138a10ddc2ca0ec7254a0be6548cb4e880d49

SHA256
51b9f21b9fed785b4ad209cac32adbec347f5ad1f6a4b07124795cbbd554e648

SHA512
64632ad40780f51df660ef4d1e32fe427d984d50a1f3c52b4334bcdbf2666bfef82d38f75887305f1a93bd3b99a255a1b0d2e20a20d71ca5120ea7e81f050bfc

Download Submit
C:\Users\Admin\AppData\Local\Temp\vbDfdpq6ywbl.bat

Filesize
207B

MD5
f15248c1d616a4e9ced65fd29b0eb296

SHA1
24fe55f193ad1956b7986983933aa876cb13aa94

SHA256
c4dd3e44dbd39bd091da3efd95111e2b09a712842548d2d7faed5896bd5e4bdf

SHA512
2fa95fd0ea9e29481d4dfeb3e5b160e014533296fe05dd9a3bc6bb93b234361ea6f5e1e5b022c67f81061c210e4f785b79bd28e797734634665139b35cb93fd4

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

Filesize
3.1MB

MD5
7f888b6cbd5062a7558eea61eb9a9ca2

SHA1
2acfb5c3e7b8e569ea52397154b9b3ffb44e7d87

SHA256
864bec690da391f258de447606ac18baa79672b665ba321a4da67ed59d567cad

SHA512
7da70e844e0fce4b4bbc70db89503b95b6514cabf9ce9cf66fed643f6c11aafc5e7a8f385b5d16f7fa802cc47c9200bf486030834551d14c55078307ef7e93d8

Download Submit
memory/1408-21-0x000007FEF5830000-0x000007FEF621C000-memory.dmp

Filesize
9.9MB

Download
memory/1408-11-0x000007FEF5830000-0x000007FEF621C000-memory.dmp

Filesize
9.9MB

Download
memory/1408-8-0x0000000000FE0000-0x0000000001304000-memory.dmp

Filesize
3.1MB

Download
memory/1408-9-0x000007FEF5830000-0x000007FEF621C000-memory.dmp

Filesize
9.9MB

Download
memory/2296-10-0x000007FEF5830000-0x000007FEF621C000-memory.dmp

Filesize
9.9MB

Download
memory/2296-0-0x000007FEF5833000-0x000007FEF5834000-memory.dmp

Filesize
4KB

Download
memory/2296-2-0x000007FEF5830000-0x000007FEF621C000-memory.dmp

Filesize
9.9MB

Download
memory/2296-1-0x0000000001330000-0x0000000001654000-memory.dmp

Filesize
3.1MB

Download
memory/2956-34-0x00000000013E0000-0x0000000001704000-memory.dmp

Filesize
3.1MB

Download