quasar | 035f44415228a4f73d1aab1a7f3ff75b8138f2b093586b49cf4faef32587863b

Analysis

max time kernel
94s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
19-11-2024 02:04

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General

Target

New Purchase Order-0304243220- SMART SOURCING INC.pdf____________________________________________________.exe
Size

1.4MB
MD5

c28ef8671a7f140f9385ab177e38844b
SHA1

4cc35c23f2ce252413249ecd2ea47967fc00d5a4
SHA256

ffa58ebc168e4a19c311097b97645a5d8801db2326f4e8784b634c3e2e2de991
SHA512

6ce012bf3c1024eef4a47f54c86e3819175816d6c39bfa2216d1d522fc9612637473d8c6be2f4f203f52fc38c2bf887ed6e748ff5c18ee960fb0d82014ade82a
SSDEEP

12288:2fcOokxZ4FK9VlPprK7w5NljuDvdLwLEcXq8dxSaDygxpy3nZOJcllvB:2P8FMhQiXhxkKcOUv

Score

10^/10

quasar chim discovery spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Chim

aboushagor.ydns.eu:6542

Mutex

0b30f45d-3c54-4926-a32f-8a1dc077eb21

Attributes

encryption_key
799E5C34BA6EC18D72E269D0C5CF1A5AC1AD9277
install_name
windows update.exe
log_directory
Logs
reconnect_delay
3000
startup_key
svchost
subdirectory
SubDir

Signatures

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

Quasar payload 1 IoCs

resource	yara_rule
behavioral2/memory/4012-1098-0x0000000000400000-0x0000000000724000-memory.dmp	family_quasar

Suspicious use of NtCreateUserProcessOtherParentProcess 1 IoCs

description	pid	Process	procid_target
PID 5028 created 3424	5028	New Purchase Order-0304243220- SMART SOURCING INC.pdf____________________________________________________.exe	55

Drops startup file 1 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\StackTrace.vbs	New Purchase Order-0304243220- SMART SOURCING INC.pdf____________________________________________________.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 5028 set thread context of 4012	5028	New Purchase Order-0304243220- SMART SOURCING INC.pdf____________________________________________________.exe	94

System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	InstallUtil.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	New Purchase Order-0304243220- SMART SOURCING INC.pdf____________________________________________________.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

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

persistence execution

Scheduled Task

T1053.005

pid	Process
1708	schtasks.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
5028	New Purchase Order-0304243220- SMART SOURCING INC.pdf____________________________________________________.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	5028	New Purchase Order-0304243220- SMART SOURCING INC.pdf____________________________________________________.exe
Token: SeDebugPrivilege	5028	New Purchase Order-0304243220- SMART SOURCING INC.pdf____________________________________________________.exe
Token: SeDebugPrivilege	4012	InstallUtil.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 5028 wrote to memory of 4012	5028	New Purchase Order-0304243220- SMART SOURCING INC.pdf____________________________________________________.exe	94
PID 5028 wrote to memory of 4012	5028	New Purchase Order-0304243220- SMART SOURCING INC.pdf____________________________________________________.exe	94
PID 5028 wrote to memory of 4012	5028	New Purchase Order-0304243220- SMART SOURCING INC.pdf____________________________________________________.exe	94
PID 5028 wrote to memory of 4012	5028	New Purchase Order-0304243220- SMART SOURCING INC.pdf____________________________________________________.exe	94
PID 5028 wrote to memory of 4012	5028	New Purchase Order-0304243220- SMART SOURCING INC.pdf____________________________________________________.exe	94
PID 5028 wrote to memory of 4012	5028	New Purchase Order-0304243220- SMART SOURCING INC.pdf____________________________________________________.exe	94
PID 5028 wrote to memory of 4012	5028	New Purchase Order-0304243220- SMART SOURCING INC.pdf____________________________________________________.exe	94
PID 5028 wrote to memory of 4012	5028	New Purchase Order-0304243220- SMART SOURCING INC.pdf____________________________________________________.exe	94
PID 4012 wrote to memory of 1708	4012	InstallUtil.exe	95
PID 4012 wrote to memory of 1708	4012	InstallUtil.exe	95
PID 4012 wrote to memory of 1708	4012	InstallUtil.exe	95

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:3424
- C:\Users\Admin\AppData\Local\Temp\New Purchase Order-0304243220- SMART SOURCING INC.pdf____________________________________________________.exe
  "C:\Users\Admin\AppData\Local\Temp\New Purchase Order-0304243220- SMART SOURCING INC.pdf____________________________________________________.exe"
  2⤵
  - Suspicious use of NtCreateUserProcessOtherParentProcess
  - Drops startup file
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:5028
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4012
- - C:\Windows\SysWOW64\schtasks.exe
    "schtasks" /create /tn "svchost" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\windows update.exe" /rl HIGHEST /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:1708

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

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/4012-1096-0x0000000074AB0000-0x0000000075260000-memory.dmp

Filesize
7.7MB

Download
memory/4012-1098-0x0000000000400000-0x0000000000724000-memory.dmp

Filesize
3.1MB

Download
memory/4012-1099-0x0000000074AB0000-0x0000000075260000-memory.dmp

Filesize
7.7MB

Download
memory/4012-1100-0x00000000055B0000-0x00000000055BA000-memory.dmp

Filesize
40KB

Download
memory/4012-1101-0x00000000068F0000-0x0000000006F08000-memory.dmp

Filesize
6.1MB

Download
memory/4012-1109-0x0000000074AB0000-0x0000000075260000-memory.dmp

Filesize
7.7MB

Download
memory/4012-1108-0x0000000007800000-0x0000000007866000-memory.dmp

Filesize
408KB

Download
memory/4012-1107-0x0000000007750000-0x000000000778C000-memory.dmp

Filesize
240KB

Download
memory/4012-1106-0x00000000076F0000-0x0000000007702000-memory.dmp

Filesize
72KB

Download
memory/4012-1103-0x0000000006660000-0x0000000006712000-memory.dmp

Filesize
712KB

Download
memory/4012-1102-0x00000000063F0000-0x0000000006440000-memory.dmp

Filesize
320KB

Download
memory/5028-40-0x0000000006B80000-0x0000000006D86000-memory.dmp

Filesize
2.0MB

Download
memory/5028-26-0x0000000006B80000-0x0000000006D86000-memory.dmp

Filesize
2.0MB

Download
memory/5028-10-0x0000000006B80000-0x0000000006D86000-memory.dmp

Filesize
2.0MB

Download
memory/5028-13-0x0000000006B80000-0x0000000006D86000-memory.dmp

Filesize
2.0MB

Download
memory/5028-24-0x0000000006B80000-0x0000000006D86000-memory.dmp

Filesize
2.0MB

Download
memory/5028-42-0x0000000006B80000-0x0000000006D86000-memory.dmp

Filesize
2.0MB

Download
memory/5028-50-0x0000000006B80000-0x0000000006D86000-memory.dmp

Filesize
2.0MB

Download
memory/5028-68-0x0000000006B80000-0x0000000006D86000-memory.dmp

Filesize
2.0MB

Download
memory/5028-66-0x0000000006B80000-0x0000000006D86000-memory.dmp

Filesize
2.0MB

Download
memory/5028-64-0x0000000006B80000-0x0000000006D86000-memory.dmp

Filesize
2.0MB

Download
memory/5028-62-0x0000000006B80000-0x0000000006D86000-memory.dmp

Filesize
2.0MB

Download
memory/5028-60-0x0000000006B80000-0x0000000006D86000-memory.dmp

Filesize
2.0MB

Download
memory/5028-58-0x0000000006B80000-0x0000000006D86000-memory.dmp

Filesize
2.0MB

Download
memory/5028-56-0x0000000006B80000-0x0000000006D86000-memory.dmp

Filesize
2.0MB

Download
memory/5028-54-0x0000000006B80000-0x0000000006D86000-memory.dmp

Filesize
2.0MB

Download
memory/5028-52-0x0000000006B80000-0x0000000006D86000-memory.dmp

Filesize
2.0MB

Download
memory/5028-48-0x0000000006B80000-0x0000000006D86000-memory.dmp

Filesize
2.0MB

Download
memory/5028-46-0x0000000006B80000-0x0000000006D86000-memory.dmp

Filesize
2.0MB

Download
memory/5028-44-0x0000000006B80000-0x0000000006D86000-memory.dmp

Filesize
2.0MB

Download
memory/5028-6-0x0000000006ED0000-0x0000000006F62000-memory.dmp

Filesize
584KB

Download
memory/5028-38-0x0000000006B80000-0x0000000006D86000-memory.dmp

Filesize
2.0MB

Download
memory/5028-36-0x0000000006B80000-0x0000000006D86000-memory.dmp

Filesize
2.0MB

Download
memory/5028-34-0x0000000006B80000-0x0000000006D86000-memory.dmp

Filesize
2.0MB

Download
memory/5028-30-0x0000000006B80000-0x0000000006D86000-memory.dmp

Filesize
2.0MB

Download
memory/5028-28-0x0000000006B80000-0x0000000006D86000-memory.dmp

Filesize
2.0MB

Download
memory/5028-8-0x0000000006B80000-0x0000000006D86000-memory.dmp

Filesize
2.0MB

Download
memory/5028-22-0x0000000006B80000-0x0000000006D86000-memory.dmp

Filesize
2.0MB

Download
memory/5028-32-0x0000000006B80000-0x0000000006D86000-memory.dmp

Filesize
2.0MB

Download
memory/5028-20-0x0000000006B80000-0x0000000006D86000-memory.dmp

Filesize
2.0MB

Download
memory/5028-18-0x0000000006B80000-0x0000000006D86000-memory.dmp

Filesize
2.0MB

Download
memory/5028-16-0x0000000006B80000-0x0000000006D86000-memory.dmp

Filesize
2.0MB

Download
memory/5028-7-0x0000000006B80000-0x0000000006D86000-memory.dmp

Filesize
2.0MB

Download
memory/5028-14-0x0000000006B80000-0x0000000006D86000-memory.dmp

Filesize
2.0MB

Download
memory/5028-70-0x0000000006B80000-0x0000000006D86000-memory.dmp

Filesize
2.0MB

Download
memory/5028-1081-0x0000000074AB0000-0x0000000075260000-memory.dmp

Filesize
7.7MB

Download
memory/5028-1082-0x0000000007180000-0x00000000072FE000-memory.dmp

Filesize
1.5MB

Download
memory/5028-1083-0x0000000006FE0000-0x000000000702C000-memory.dmp

Filesize
304KB

Download
memory/5028-1088-0x0000000074AB0000-0x0000000075260000-memory.dmp

Filesize
7.7MB

Download
memory/5028-1089-0x0000000074AB0000-0x0000000075260000-memory.dmp

Filesize
7.7MB

Download
memory/5028-1085-0x0000000074ABE000-0x0000000074ABF000-memory.dmp

Filesize
4KB

Download
memory/5028-5-0x0000000007380000-0x0000000007924000-memory.dmp

Filesize
5.6MB

Download
memory/5028-4-0x0000000006B80000-0x0000000006D8C000-memory.dmp

Filesize
2.0MB

Download
memory/5028-3-0x00000000031A0000-0x00000000031B0000-memory.dmp

Filesize
64KB

Download
memory/5028-2-0x0000000074AB0000-0x0000000075260000-memory.dmp

Filesize
7.7MB

Download
memory/5028-1-0x0000000000B10000-0x0000000000C80000-memory.dmp

Filesize
1.4MB

Download
memory/5028-0-0x0000000074ABE000-0x0000000074ABF000-memory.dmp

Filesize
4KB

Download
memory/5028-1090-0x0000000074AB0000-0x0000000075260000-memory.dmp

Filesize
7.7MB

Download
memory/5028-1092-0x0000000074AB0000-0x0000000075260000-memory.dmp

Filesize
7.7MB

Download
memory/5028-1091-0x0000000007040000-0x0000000007094000-memory.dmp

Filesize
336KB

Download
memory/5028-1097-0x0000000074AB0000-0x0000000075260000-memory.dmp

Filesize
7.7MB

Download