quasar | 4237fb240d317a51416d08ffc076308fe1043c5bbddba50289fa6fbf965e144a

General

Target

VapeV4.exe
Size

3.1MB
MD5

8a1eef0f51ecf22f782e9386b336f0b8
SHA1

f30b1e79466a5f50be6ba17954bb8dc67fce5940
SHA256

4237fb240d317a51416d08ffc076308fe1043c5bbddba50289fa6fbf965e144a
SHA512

307a3e0338b402d16973f3f5971898ceb7a5870db0a8641b73962819f66368c396900e95351d9ee8150de6f33ad431fed65aa74ab36cd0fba15d0c111df77fd6
SSDEEP

49152:mvyI22SsaNYfdPBldt698dBcjH5n8GmzlRoGdm/nTHHB72eh2NT:mvf22SsaNYfdPBldt6+dBcjH5n8/

Score

10^/10

quasar office04 spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

C2

192.168.0.19:65535

Mutex

4f1091c6-9310-46dc-8b99-4128f790dfdd

Attributes

encryption_key
BF250ADA82C0B44923851CC7C0A325B2D748FF1D
install_name
Client.exe
log_directory
Logs
reconnect_delay
3000
startup_key
windows 32 process
subdirectory
SubDir

Signatures

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

Quasar payload 2 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1604-1-0x00000000000E0000-0x0000000000404000-memory.dmp	family_quasar
C:\Users\Admin\AppData\Roaming\SubDir\Client.exe	family_quasar

Executes dropped EXE 1 IoCs

Processes:

Client.exe

pid process

2032 Client.exe
Creates scheduled task(s) 1 TTPs 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task/Job
T1053

Processes:

schtasks.exeschtasks.exe

pid process

716 schtasks.exe
4180 schtasks.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

VapeV4.exeClient.exe

description pid process

Token: SeDebugPrivilege 1604 VapeV4.exe
Token: SeDebugPrivilege 2032 Client.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

Client.exe

pid process

2032 Client.exe

pid	process
2032	Client.exe

pid	process
716	schtasks.exe
4180	schtasks.exe

description	pid	process
Token: SeDebugPrivilege	1604	VapeV4.exe
Token: SeDebugPrivilege	2032	Client.exe

pid	process
2032	Client.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

VapeV4.exeClient.exe

description	pid	process	target process
PID 1604 wrote to memory of 716	1604	VapeV4.exe	schtasks.exe
PID 1604 wrote to memory of 716	1604	VapeV4.exe	schtasks.exe
PID 1604 wrote to memory of 2032	1604	VapeV4.exe	Client.exe
PID 1604 wrote to memory of 2032	1604	VapeV4.exe	Client.exe
PID 2032 wrote to memory of 4180	2032	Client.exe	schtasks.exe
PID 2032 wrote to memory of 4180	2032	Client.exe	schtasks.exe

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\VapeV4.exe
"C:\Users\Admin\AppData\Local\Temp\VapeV4.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1604

C:\Windows\SYSTEM32\schtasks.exe
"schtasks" /create /tn "windows 32 process" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f
2⤵
- Creates scheduled task(s)
PID:716

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 SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2032

C:\Windows\SYSTEM32\schtasks.exe
"schtasks" /create /tn "windows 32 process" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f
3⤵
- Creates scheduled task(s)
PID:4180

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=3636 --field-trial-handle=2248,i,10247514684337323751,15511974759131734137,262144 --variations-seed-version /prefetch:8
1⤵
PID:4020

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=1256 --field-trial-handle=2248,i,10247514684337323751,15511974759131734137,262144 --variations-seed-version /prefetch:8
1⤵
PID:3280

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Persistence

Scheduled Task/Job

1

T1053

Privilege Escalation

Scheduled Task/Job

1

T1053

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
3.1MB

MD5
8a1eef0f51ecf22f782e9386b336f0b8

SHA1
f30b1e79466a5f50be6ba17954bb8dc67fce5940

SHA256
4237fb240d317a51416d08ffc076308fe1043c5bbddba50289fa6fbf965e144a

SHA512
307a3e0338b402d16973f3f5971898ceb7a5870db0a8641b73962819f66368c396900e95351d9ee8150de6f33ad431fed65aa74ab36cd0fba15d0c111df77fd6

Download Submit
memory/1604-0-0x00007FF9D5CB3000-0x00007FF9D5CB5000-memory.dmp

Filesize
8KB

Download
memory/1604-1-0x00000000000E0000-0x0000000000404000-memory.dmp

Filesize
3.1MB

Download
memory/1604-2-0x00007FF9D5CB0000-0x00007FF9D6771000-memory.dmp

Filesize
10.8MB

Download
memory/1604-10-0x00007FF9D5CB0000-0x00007FF9D6771000-memory.dmp

Filesize
10.8MB

Download
memory/2032-9-0x00007FF9D5CB0000-0x00007FF9D6771000-memory.dmp

Filesize
10.8MB

Download
memory/2032-11-0x00007FF9D5CB0000-0x00007FF9D6771000-memory.dmp

Filesize
10.8MB

Download
memory/2032-12-0x0000000001BA0000-0x0000000001BF0000-memory.dmp

Filesize
320KB

Download
memory/2032-13-0x000000001BEB0000-0x000000001BF62000-memory.dmp

Filesize
712KB

Download
memory/2032-14-0x00007FF9D5CB0000-0x00007FF9D6771000-memory.dmp

Filesize
10.8MB

Download
memory/2032-15-0x00007FF9D5CB0000-0x00007FF9D6771000-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