quasar | 1eca7997b75df9fe1c05bc5f4160da5e3ce00e1ae69ad0ca46a15ab126e9c453

Analysis

max time kernel
146s
max time network
147s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
17-01-2025 03:19

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General

Target

Client-built.exe
Size

3.1MB
MD5

1c5623527c313f4579073dc072f66d29
SHA1

66b831c9e349c46ea4446e02db80f7e399b4e8dd
SHA256

1eca7997b75df9fe1c05bc5f4160da5e3ce00e1ae69ad0ca46a15ab126e9c453
SHA512

605a2326b86484c889e25caf69f157c454e9ba82598dd9e75238b6a45ae3f90a9a2934d241fe57f1f9ffd7e80d032dfe5d62b03b23e9643760e21fe0e4e0cb15
SSDEEP

49152:3vrI22SsaNYfdPBldt698dBcjHVxRJ6dbR3LoGdcTHHB72eh2NT:3vU22SsaNYfdPBldt6+dBcjHVxRJ6v

Score

10^/10

quasar offset spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Offset

feb-arrested.gl.at.ply.gg:17830

Mutex

6e42bdfc-2d57-4961-8fe9-d28735513d49

Attributes

encryption_key
CABE6FE0988CAB22AE614AA6065A89402DF1C513
install_name
svchost.exe
log_directory
Logs
reconnect_delay
3000
startup_key
conhost
subdirectory
Windows

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/2832-1-0x00000000010F0000-0x0000000001414000-memory.dmp	family_quasar
behavioral1/files/0x0008000000016d42-6.dat	family_quasar
behavioral1/memory/2864-8-0x0000000000020000-0x0000000000344000-memory.dmp	family_quasar

Executes dropped EXE 1 IoCs

pid	Process
2864	svchost.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
1132	schtasks.exe
2688	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2832	Client-built.exe
Token: SeDebugPrivilege	2864	svchost.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2864	svchost.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 2832 wrote to memory of 1132	2832	Client-built.exe	30
PID 2832 wrote to memory of 1132	2832	Client-built.exe	30
PID 2832 wrote to memory of 1132	2832	Client-built.exe	30
PID 2832 wrote to memory of 2864	2832	Client-built.exe	32
PID 2832 wrote to memory of 2864	2832	Client-built.exe	32
PID 2832 wrote to memory of 2864	2832	Client-built.exe	32
PID 2864 wrote to memory of 2688	2864	svchost.exe	33
PID 2864 wrote to memory of 2688	2864	svchost.exe	33
PID 2864 wrote to memory of 2688	2864	svchost.exe	33

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\Client-built.exe
"C:\Users\Admin\AppData\Local\Temp\Client-built.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2832
- C:\Windows\system32\schtasks.exe
  "schtasks" /create /tn "conhost" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\Windows\svchost.exe" /rl HIGHEST /f
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:1132
- C:\Users\Admin\AppData\Roaming\Windows\svchost.exe
  "C:\Users\Admin\AppData\Roaming\Windows\svchost.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2864
- - C:\Windows\system32\schtasks.exe
    "schtasks" /create /tn "conhost" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\Windows\svchost.exe" /rl HIGHEST /f
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:2688

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\Windows\svchost.exe

Filesize
3.1MB

MD5
1c5623527c313f4579073dc072f66d29

SHA1
66b831c9e349c46ea4446e02db80f7e399b4e8dd

SHA256
1eca7997b75df9fe1c05bc5f4160da5e3ce00e1ae69ad0ca46a15ab126e9c453

SHA512
605a2326b86484c889e25caf69f157c454e9ba82598dd9e75238b6a45ae3f90a9a2934d241fe57f1f9ffd7e80d032dfe5d62b03b23e9643760e21fe0e4e0cb15

Download Submit
memory/2832-0-0x000007FEF53F3000-0x000007FEF53F4000-memory.dmp

Filesize
4KB

Download
memory/2832-1-0x00000000010F0000-0x0000000001414000-memory.dmp

Filesize
3.1MB

Download
memory/2832-2-0x000007FEF53F0000-0x000007FEF5DDC000-memory.dmp

Filesize
9.9MB

Download
memory/2832-10-0x000007FEF53F0000-0x000007FEF5DDC000-memory.dmp

Filesize
9.9MB

Download
memory/2864-8-0x0000000000020000-0x0000000000344000-memory.dmp

Filesize
3.1MB

Download
memory/2864-11-0x000007FEF53F0000-0x000007FEF5DDC000-memory.dmp

Filesize
9.9MB

Download
memory/2864-9-0x000007FEF53F0000-0x000007FEF5DDC000-memory.dmp

Filesize
9.9MB

Download
memory/2864-12-0x000007FEF53F0000-0x000007FEF5DDC000-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