quasar | 8a73c6cabf1abc6bc2dbbd19b6da87b72de28021104d11bc2978e3869b36c275

Analysis

max time kernel
1798s
max time network
1799s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
14-11-2024 23:19

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General

Target

sdaasd.exe
Size

3.1MB
MD5

5b33b455e4f7c1aaa73b3304399d5b00
SHA1

21a0ce3f7bb6c3fb4a9eb164a1d27f3bec4da3c5
SHA256

8a73c6cabf1abc6bc2dbbd19b6da87b72de28021104d11bc2978e3869b36c275
SHA512

76d6c5937c4745cad21edd2464d67ed8e2c93fb368980dfa070dc5e6950686ca7db9fae25ab1299f5ea1c6b003cc11ff794a8657d1fd73141135b19a0fd3bdbd
SSDEEP

49152:OvbY52fyaSZOrPWluWBuGG5g5hzEGXBeoxosdbTHHB72eh2NT:Ovc52fyaSZOrPWluWBDG5g5hAGb

Score

10^/10

quasar dsa spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

dsa

192.168.1.4:80

Mutex

c60d7f4c-403e-439b-9ef0-75681aa82598

Attributes

encryption_key
84EEFDB37698E582E7732B4568EC490426D1D6DF
install_name
123123.exe
log_directory
123
reconnect_delay
3000
startup_key
Broker
subdirectory
3

Signatures

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

Quasar payload 3 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1908-8-0x00000000013C0000-0x00000000016E4000-memory.dmp	family_quasar
C:\Users\Admin\AppData\Roaming\3\123123.exe	family_quasar
behavioral1/memory/2236-1-0x0000000000390000-0x00000000006B4000-memory.dmp	family_quasar

Executes dropped EXE 1 IoCs

Processes:

123123.exe

pid process

1908 123123.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

sdaasd.exe123123.exe

description pid process

Token: SeDebugPrivilege 2236 sdaasd.exe
Token: SeDebugPrivilege 1908 123123.exe
Suspicious use of FindShellTrayWindow 1 IoCs

Processes:

123123.exe

pid process

1908 123123.exe
Suspicious use of SendNotifyMessage 1 IoCs

Processes:

123123.exe

pid process

1908 123123.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

123123.exe

pid process

1908 123123.exe

pid	process
1908	123123.exe

description	pid	process
Token: SeDebugPrivilege	2236	sdaasd.exe
Token: SeDebugPrivilege	1908	123123.exe

pid	process
1908	123123.exe

pid	process
1908	123123.exe

pid	process
1908	123123.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

sdaasd.exe

description	pid	process	target process
PID 2236 wrote to memory of 1908	2236	sdaasd.exe	123123.exe
PID 2236 wrote to memory of 1908	2236	sdaasd.exe	123123.exe
PID 2236 wrote to memory of 1908	2236	sdaasd.exe	123123.exe

C:\Users\Admin\AppData\Local\Temp\sdaasd.exe
"C:\Users\Admin\AppData\Local\Temp\sdaasd.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2236
- C:\Users\Admin\AppData\Roaming\3\123123.exe
  "C:\Users\Admin\AppData\Roaming\3\123123.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  - Suspicious use of SetWindowsHookEx
  PID:1908

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\3\123123.exe

Filesize
3.1MB

MD5
5b33b455e4f7c1aaa73b3304399d5b00

SHA1
21a0ce3f7bb6c3fb4a9eb164a1d27f3bec4da3c5

SHA256
8a73c6cabf1abc6bc2dbbd19b6da87b72de28021104d11bc2978e3869b36c275

SHA512
76d6c5937c4745cad21edd2464d67ed8e2c93fb368980dfa070dc5e6950686ca7db9fae25ab1299f5ea1c6b003cc11ff794a8657d1fd73141135b19a0fd3bdbd

Download Submit
memory/1908-9-0x000007FEF57B0000-0x000007FEF619C000-memory.dmp

Filesize
9.9MB

Download
memory/1908-8-0x00000000013C0000-0x00000000016E4000-memory.dmp

Filesize
3.1MB

Download
memory/1908-7-0x000007FEF57B0000-0x000007FEF619C000-memory.dmp

Filesize
9.9MB

Download
memory/1908-11-0x000007FEF57B0000-0x000007FEF619C000-memory.dmp

Filesize
9.9MB

Download
memory/2236-10-0x000007FEF57B0000-0x000007FEF619C000-memory.dmp

Filesize
9.9MB

Download
memory/2236-2-0x000007FEF57B0000-0x000007FEF619C000-memory.dmp

Filesize
9.9MB

Download
memory/2236-1-0x0000000000390000-0x00000000006B4000-memory.dmp

Filesize
3.1MB

Download
memory/2236-0-0x000007FEF57B3000-0x000007FEF57B4000-memory.dmp

Filesize
4KB

Download