quasar | b8bb69625663a99c2400b84dbea5de7649961ee0684b08057dcdd55221fd758d

General

Target

Otago_IB_Conf.lnk
Size

1KB
MD5

4af014550fcfd0cb5a60d18d3e339654
SHA1

f7cd52bf3c622c2784dcb7dbb0e39d9bbbcb2fef
SHA256

43be8f7868bd8a976ca55757b5253b577012e02e75798225d76cf1111b401668
SHA512

3690164c4cb64328f73c15ccc5c43b5fed0196ca27f62af40cef608d29e619d1272fb0a31b58de13dde7d67be65f4b2166a55d3dc6e78ccf10665ff175d8e97a

Score

10^/10

quasar office04 spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

C2

94.156.69.32:4782

Mutex

50380dde-34ad-4717-969f-5435a90bc9c0

Attributes

encryption_key
34E5AD2D21D24289CCD1651CD4CE56F37B65DB13
install_name
Client.exe
log_directory
Logs
reconnect_delay
3000
startup_key
Quasar Client Startup
subdirectory
SubDir

Signatures

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

Quasar payload 2 IoCs

resource	yara_rule
behavioral6/memory/2964-64-0x0000024E1DD90000-0x0000024E1E0B6000-memory.dmp	family_quasar
behavioral6/memory/2964-65-0x0000024E38C00000-0x0000024E38F24000-memory.dmp	family_quasar

Checks computer location settings 2 TTPs 2 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-1-5-21-2170637797-568393320-3232933035-1000\Control Panel\International\Geo\Nation	cmd.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2170637797-568393320-3232933035-1000\Control Panel\International\Geo\Nation	cmd.exe

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

System Information Discovery
T1082

Checks processor information in registry 2 TTPs 3 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	POWERPNT.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	POWERPNT.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	POWERPNT.EXE

Enumerates system info in registry 2 TTPs 3 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	POWERPNT.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily	POWERPNT.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	POWERPNT.EXE

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2170637797-568393320-3232933035-1000_Classes\Local Settings	cmd.exe

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
4200	POWERPNT.EXE

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2964	RuntimeBroker.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
4200	POWERPNT.EXE
4200	POWERPNT.EXE
4200	POWERPNT.EXE
4200	POWERPNT.EXE

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 756 wrote to memory of 2008	756	cmd.exe	88
PID 756 wrote to memory of 2008	756	cmd.exe	88
PID 2008 wrote to memory of 1708	2008	cmd.exe	89
PID 2008 wrote to memory of 1708	2008	cmd.exe	89
PID 2008 wrote to memory of 4200	2008	cmd.exe	91
PID 2008 wrote to memory of 4200	2008	cmd.exe	91
PID 2008 wrote to memory of 4200	2008	cmd.exe	91
PID 1708 wrote to memory of 2964	1708	NordUpdateService.exe	104
PID 1708 wrote to memory of 2964	1708	NordUpdateService.exe	104
PID 1708 wrote to memory of 2964	1708	NordUpdateService.exe	104
PID 1708 wrote to memory of 2964	1708	NordUpdateService.exe	104
PID 1708 wrote to memory of 2964	1708	NordUpdateService.exe	104
PID 1708 wrote to memory of 2964	1708	NordUpdateService.exe	104

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\Otago_IB_Conf.lnk
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:756
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c start "" "Otago_IB.lnk" && start "" "Otago_IB_Conference.pptx"
  2⤵
  - Checks computer location settings
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2008
- - C:\Users\Admin\AppData\Local\Temp\NordUpdateService.exe
    "C:\Users\Admin\AppData\Local\Temp\NordUpdateService.exe"
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1708
  - - C:\Windows\SYSTEM32\RuntimeBroker.exe
      RuntimeBroker.exe
      4⤵
      Suspicious use of AdjustPrivilegeToken
      PID:2964
- - C:\Program Files\Microsoft Office\Root\Office16\POWERPNT.EXE
    "C:\Program Files\Microsoft Office\Root\Office16\POWERPNT.EXE" "C:\Users\Admin\AppData\Local\Temp\Otago_IB_Conference.pptx" /ou ""
    3⤵
    - Checks processor information in registry
    - Enumerates system info in registry
    - Suspicious behavior: AddClipboardFormatListener
    - Suspicious use of SetWindowsHookEx
    PID:4200

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 --field-trial-handle=3980,i,3239535018877284530,3457823197501312703,262144 --variations-seed-version --mojo-platform-channel-handle=4856 /prefetch:8
1⤵
PID:980

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

3

T1012

System Information Discovery

4

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/1708-59-0x000000006E900000-0x000000006E9E1000-memory.dmp

Filesize
900KB

Download
memory/1708-51-0x000000006E900000-0x000000006E9E1000-memory.dmp

Filesize
900KB

Download
memory/1708-52-0x000000006E900000-0x000000006E9E1000-memory.dmp

Filesize
900KB

Download
memory/1708-53-0x000000006E900000-0x000000006E9E1000-memory.dmp

Filesize
900KB

Download
memory/1708-63-0x000000006E900000-0x000000006E9E1000-memory.dmp

Filesize
900KB

Download
memory/1708-61-0x000000006E900000-0x000000006E9E1000-memory.dmp

Filesize
900KB

Download
memory/1708-60-0x000000006E900000-0x000000006E9E1000-memory.dmp

Filesize
900KB

Download
memory/1708-58-0x000000006E900000-0x000000006E9E1000-memory.dmp

Filesize
900KB

Download
memory/1708-57-0x000000006E900000-0x000000006E9E1000-memory.dmp

Filesize
900KB

Download
memory/1708-62-0x000000006E900000-0x000000006E9E1000-memory.dmp

Filesize
900KB

Download
memory/2964-67-0x0000024E3A2C0000-0x0000024E3A372000-memory.dmp

Filesize
712KB

Download
memory/2964-64-0x0000024E1DD90000-0x0000024E1E0B6000-memory.dmp

Filesize
3.1MB

Download
memory/2964-66-0x0000024E38FA0000-0x0000024E38FF0000-memory.dmp

Filesize
320KB

Download
memory/2964-65-0x0000024E38C00000-0x0000024E38F24000-memory.dmp

Filesize
3.1MB

Download
memory/2964-56-0x0000024E1E410000-0x0000024E1E411000-memory.dmp

Filesize
4KB

Download
memory/2964-55-0x0000024E1E400000-0x0000024E1E401000-memory.dmp

Filesize
4KB

Download
memory/4200-48-0x00007FF8678D0000-0x00007FF8678E0000-memory.dmp

Filesize
64KB

Download
memory/4200-49-0x00007FF8678D0000-0x00007FF8678E0000-memory.dmp

Filesize
64KB

Download
memory/4200-3-0x00007FF8678D0000-0x00007FF8678E0000-memory.dmp

Filesize
64KB

Download
memory/4200-10-0x00007FF8656B0000-0x00007FF8656C0000-memory.dmp

Filesize
64KB

Download
memory/4200-7-0x00007FF8656B0000-0x00007FF8656C0000-memory.dmp

Filesize
64KB

Download
memory/4200-47-0x00007FF8678D0000-0x00007FF8678E0000-memory.dmp

Filesize
64KB

Download
memory/4200-5-0x00007FF8678D0000-0x00007FF8678E0000-memory.dmp

Filesize
64KB

Download
memory/4200-50-0x00007FF8678D0000-0x00007FF8678E0000-memory.dmp

Filesize
64KB

Download
memory/4200-2-0x00007FF8678D0000-0x00007FF8678E0000-memory.dmp

Filesize
64KB

Download
memory/4200-4-0x00007FF8678D0000-0x00007FF8678E0000-memory.dmp

Filesize
64KB

Download
memory/4200-6-0x00007FF8678D0000-0x00007FF8678E0000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads