quasar | fbe69d8e1fa5390e1627f2c7713c456c69e0be031e2df0faace32d439a412fe9

Analysis

max time kernel
148s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
20/04/2024, 04:12

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General

Target
fbe69d8e1fa5390e1627f2c7713c456c69e0be031e2df0faace32d439a412fe9_JaffaCakes118.exe
Size 3.1MB
Sample240420-esls9agh9t
SHA256 fbe69d8e1fa5390e1627f2c7713c456c69e0be031e2df0faace32d439a412fe9
MD5 9e282c69a25055463e8481edbbaf3d14
SHA1 2c867ddfe529f664bc6234fd9c1244bd4d6c7a6c
SHA512 fa1d96774579db7aeef3cc5ae7c94f6a3358b3209dc10e3d43b068bd0b6ad2ba6a457f89e0eda7fe7533e2bf4656acffbe1fab491fcf7a475c88bde63c19fcbe
SSDEEP 49152:cwBDoDZjiLWI2DEJd0XiUcyGPOJndAmh6aI6XP11dmnJ1BG0HyuEao/7XO:NBcDRiL4ETNUcBmJndQZwt1KjBG0Hyz
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

quasar update spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

update

127.0.0.1:4782

Mutex

ddb0d81d-667e-44c3-a1b7-00fcb82dd1ef

Attributes

encryption_key
00DF680B0E09235E9256570DFF972BC701444E37
install_name
Client.exe
log_directory
Logs
reconnect_delay
3000
startup_key
putty
subdirectory
SubDir

Signatures

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

Quasar payload 1 IoCs

resource	yara_rule
behavioral2/memory/1708-11-0x0000000000400000-0x0000000000724000-memory.dmp	family_quasar

Executes dropped EXE 1 IoCs

pid	Process
3520	Client.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3148 set thread context of 1708	3148	fbe69d8e1fa5390e1627f2c7713c456c69e0be031e2df0faace32d439a412fe9_JaffaCakes118.exe	99

Creates scheduled task(s) 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence

Scheduled Task/Job

T1053

pid	Process
5044	schtasks.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1708	RegAsm.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 3148 wrote to memory of 1708	3148	fbe69d8e1fa5390e1627f2c7713c456c69e0be031e2df0faace32d439a412fe9_JaffaCakes118.exe	99
PID 3148 wrote to memory of 1708	3148	fbe69d8e1fa5390e1627f2c7713c456c69e0be031e2df0faace32d439a412fe9_JaffaCakes118.exe	99
PID 3148 wrote to memory of 1708	3148	fbe69d8e1fa5390e1627f2c7713c456c69e0be031e2df0faace32d439a412fe9_JaffaCakes118.exe	99
PID 3148 wrote to memory of 1708	3148	fbe69d8e1fa5390e1627f2c7713c456c69e0be031e2df0faace32d439a412fe9_JaffaCakes118.exe	99
PID 3148 wrote to memory of 1708	3148	fbe69d8e1fa5390e1627f2c7713c456c69e0be031e2df0faace32d439a412fe9_JaffaCakes118.exe	99
PID 3148 wrote to memory of 1708	3148	fbe69d8e1fa5390e1627f2c7713c456c69e0be031e2df0faace32d439a412fe9_JaffaCakes118.exe	99
PID 3148 wrote to memory of 1708	3148	fbe69d8e1fa5390e1627f2c7713c456c69e0be031e2df0faace32d439a412fe9_JaffaCakes118.exe	99
PID 3148 wrote to memory of 1708	3148	fbe69d8e1fa5390e1627f2c7713c456c69e0be031e2df0faace32d439a412fe9_JaffaCakes118.exe	99
PID 1708 wrote to memory of 5044	1708	RegAsm.exe	100
PID 1708 wrote to memory of 5044	1708	RegAsm.exe	100
PID 1708 wrote to memory of 5044	1708	RegAsm.exe	100
PID 1708 wrote to memory of 3520	1708	RegAsm.exe	102
PID 1708 wrote to memory of 3520	1708	RegAsm.exe	102
PID 1708 wrote to memory of 3520	1708	RegAsm.exe	102

C:\Users\Admin\AppData\Local\Temp\fbe69d8e1fa5390e1627f2c7713c456c69e0be031e2df0faace32d439a412fe9_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\fbe69d8e1fa5390e1627f2c7713c456c69e0be031e2df0faace32d439a412fe9_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3148
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1708
- - C:\Windows\SysWOW64\schtasks.exe
    "schtasks" /create /tn "putty" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f
    3⤵
    - Creates scheduled task(s)
    PID:5044
- - C:\Users\Admin\AppData\Roaming\SubDir\Client.exe
    "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe"
    3⤵
    - Executes dropped EXE
    PID:3520

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Persistence

Scheduled Task/Job

T1053

Privilege Escalation

Scheduled Task/Job

T1053

Defense Evasion

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

Client.exe

Path C:\Users\Admin\AppData\Roaming\SubDir\Client.exe
Size 63KB
SHA256 c066aee7aa3aa83f763ebc5541daa266ed6c648fbffcde0d836a13b221bb2adc
MD5 0d5df43af2916f47d00c1573797c1a13
SHA1 230ab5559e806574d26b4c20847c368ed55483b0
SHA512 f96cf9e1890746b12daf839a6d0f16f062b72c1b8a40439f96583f242980f10f867720232a6fa0f7d4d7ac0a7a6143981a5a130d6417ea98b181447134c7cfe2
SSDEEP 768:X8XcJiMjm2ieHlPyCsSuJbn8dBhFwlSMF6Iq8KSYDKbQ22qWqO8w1R:rYMaNylPYSAb8dBnsHsPDKbQBqTY
MD5 SHA1 SHA512 SSDEEP

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memory/1708-11-0x0000000000400000-0x0000000000724000-memory.dmp

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memory/1708-24-0x0000000074920000-0x00000000750D0000-memory.dmp

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memory/1708-15-0x0000000005190000-0x00000000051A0000-memory.dmp

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memory/1708-14-0x0000000074920000-0x00000000750D0000-memory.dmp

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memory/3148-5-0x0000000005240000-0x000000000524A000-memory.dmp

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memory/3148-13-0x0000000074920000-0x00000000750D0000-memory.dmp

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memory/3148-7-0x0000000074920000-0x00000000750D0000-memory.dmp

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memory/3148-8-0x0000000005010000-0x0000000005020000-memory.dmp

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memory/3148-9-0x0000000005B20000-0x0000000005E46000-memory.dmp

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memory/3148-10-0x0000000005380000-0x000000000539E000-memory.dmp

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memory/3148-1-0x0000000074920000-0x00000000750D0000-memory.dmp

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memory/3148-6-0x00000000052D0000-0x0000000005346000-memory.dmp

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memory/3148-4-0x0000000005010000-0x0000000005020000-memory.dmp

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memory/3148-3-0x0000000005070000-0x0000000005102000-memory.dmp

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memory/3148-2-0x0000000005570000-0x0000000005B14000-memory.dmp

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memory/3148-0-0x00000000004A0000-0x00000000007C8000-memory.dmp

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memory/3520-23-0x0000000074920000-0x00000000750D0000-memory.dmp

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memory/3520-22-0x0000000000F10000-0x0000000000F22000-memory.dmp

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memory/3520-26-0x0000000074920000-0x00000000750D0000-memory.dmp

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Analysis

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General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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