quasar | c316b0b818125541a90d7110af8c0908a8d6c73d3b846a27aed647fab6b38e00

Analysis

max time kernel
94s
max time network
146s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
26-12-2024 04:06

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General

Target

OneDrive.exe
Size

3.2MB
MD5

7056e050ebbfca6ae325797d51eb2d0a
SHA1

055cd6e4bde3449d72f7061620647ecb73d6b9cd
SHA256

c316b0b818125541a90d7110af8c0908a8d6c73d3b846a27aed647fab6b38e00
SHA512

0c54802ad35f5a00c5db1195df2d566bc18a384f486cc3ca00dc63bb86e3fc5d105192cfe5efe9ed62bdedb441877486ec7aedbd7a6bf59fcda2f772308b150e
SSDEEP

49152:ivlI22SsaNYfdPBldt698dBcjH09L/RBxwcoGdb9THHB72eh2NT:ivu22SsaNYfdPBldt6+dBcjHq/lL

Score

10^/10

quasar test spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Test

147.185.221.22:54755

Mutex

9cabbafb-503b-49f1-ab22-adc756455c10

Attributes

encryption_key
8B93C77AC1C58EA80A3327E9FD26246A79EF3B8E
install_name
Onedrive.exe
log_directory
Logs
reconnect_delay
100
startup_key
Microsoft OneDrive
subdirectory
Onedrive

Signatures

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

Quasar payload 2 IoCs

resource	yara_rule
behavioral2/memory/2396-1-0x00000000007D0000-0x0000000000B0C000-memory.dmp	family_quasar
behavioral2/files/0x000a000000023b6d-5.dat	family_quasar

Executes dropped EXE 1 IoCs

pid	Process
2796	Onedrive.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
4264	schtasks.exe
4164	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2396	OneDrive.exe
Token: SeDebugPrivilege	2796	Onedrive.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2396 wrote to memory of 4264	2396	OneDrive.exe	82
PID 2396 wrote to memory of 4264	2396	OneDrive.exe	82
PID 2396 wrote to memory of 2796	2396	OneDrive.exe	84
PID 2396 wrote to memory of 2796	2396	OneDrive.exe	84
PID 2796 wrote to memory of 4164	2796	Onedrive.exe	85
PID 2796 wrote to memory of 4164	2796	Onedrive.exe	85

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\OneDrive.exe
"C:\Users\Admin\AppData\Local\Temp\OneDrive.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2396
- C:\Windows\SYSTEM32\schtasks.exe
  "schtasks" /create /tn "Microsoft OneDrive" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\Onedrive\Onedrive.exe" /rl HIGHEST /f
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:4264
- C:\Users\Admin\AppData\Roaming\Onedrive\Onedrive.exe
  "C:\Users\Admin\AppData\Roaming\Onedrive\Onedrive.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2796
- - C:\Windows\SYSTEM32\schtasks.exe
    "schtasks" /create /tn "Microsoft OneDrive" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\Onedrive\Onedrive.exe" /rl HIGHEST /f
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:4164

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\Local\Microsoft\CLR_v4.0\UsageLogs\Onedrive.exe.log

Filesize
1KB

MD5
baf55b95da4a601229647f25dad12878

SHA1
abc16954ebfd213733c4493fc1910164d825cac8

SHA256
ee954c5d8156fd8890e582c716e5758ed9b33721258f10e758bdc31ccbcb1924

SHA512
24f502fedb1a305d0d7b08857ffc1db9b2359ff34e06d5748ecc84e35c985f29a20d9f0a533bea32d234ab37097ec0481620c63b14ac89b280e75e14d19fd545

Download Submit
C:\Users\Admin\AppData\Roaming\Onedrive\Onedrive.exe

Filesize
3.2MB

MD5
7056e050ebbfca6ae325797d51eb2d0a

SHA1
055cd6e4bde3449d72f7061620647ecb73d6b9cd

SHA256
c316b0b818125541a90d7110af8c0908a8d6c73d3b846a27aed647fab6b38e00

SHA512
0c54802ad35f5a00c5db1195df2d566bc18a384f486cc3ca00dc63bb86e3fc5d105192cfe5efe9ed62bdedb441877486ec7aedbd7a6bf59fcda2f772308b150e

Download Submit
memory/2396-0-0x00007FFF66363000-0x00007FFF66365000-memory.dmp

Filesize
8KB

Download
memory/2396-1-0x00000000007D0000-0x0000000000B0C000-memory.dmp

Filesize
3.2MB

Download
memory/2396-2-0x00007FFF66360000-0x00007FFF66E21000-memory.dmp

Filesize
10.8MB

Download
memory/2396-10-0x00007FFF66360000-0x00007FFF66E21000-memory.dmp

Filesize
10.8MB

Download
memory/2796-9-0x00007FFF66360000-0x00007FFF66E21000-memory.dmp

Filesize
10.8MB

Download
memory/2796-11-0x00007FFF66360000-0x00007FFF66E21000-memory.dmp

Filesize
10.8MB

Download
memory/2796-12-0x000000001BFB0000-0x000000001C000000-memory.dmp

Filesize
320KB

Download
memory/2796-13-0x000000001C0C0000-0x000000001C172000-memory.dmp

Filesize
712KB

Download
memory/2796-16-0x000000001BF80000-0x000000001BF92000-memory.dmp

Filesize
72KB

Download
memory/2796-17-0x000000001C040000-0x000000001C07C000-memory.dmp

Filesize
240KB

Download
memory/2796-18-0x00007FFF66360000-0x00007FFF66E21000-memory.dmp

Filesize
10.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads