quasar | 33efdce1ad9206cefc3eed1f704984bfcc4e694152a742e3bdc279db33707c03

Analysis

max time kernel
140s
max time network
127s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
21-05-2024 16:52

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General

Target

640971be320826e9f0f230723a3ace95_JaffaCakes118.exe
Size

536KB
MD5

640971be320826e9f0f230723a3ace95
SHA1

6569c3bea39a640c8e515ab74fb6e79b8a5eebbb
SHA256

33efdce1ad9206cefc3eed1f704984bfcc4e694152a742e3bdc279db33707c03
SHA512

15fadc701fac9d358ee12865ac97d57407f1d6cdaeb171c6bd53f7964b8b0266498cdabfcaefdda7c9a4ac3cf6eb6c961c299628ee5fe267d6eee791d6bd6d6c
SSDEEP

6144:9ziuVvVdvluM8aMJJMxqBdYUNwu0c7P+HLb7Iv23eck/DZop:Mu1b8HZBaUNKc7PU7Iv23eckrZ

Score

10^/10

quasar spyware trojan

Malware Config

Signatures

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

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

Processes:

dw20.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	dw20.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	dw20.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	dw20.exe

Enumerates system info in registry 2 TTPs 2 IoCs

Query Registry

T1012

System Information Discovery

T1082

Processes:

dw20.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	dw20.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	dw20.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

640971be320826e9f0f230723a3ace95_JaffaCakes118.exedw20.exe

description	pid	process
Token: SeDebugPrivilege	4844	640971be320826e9f0f230723a3ace95_JaffaCakes118.exe
Token: SeBackupPrivilege	3480	dw20.exe
Token: SeBackupPrivilege	3480	dw20.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

640971be320826e9f0f230723a3ace95_JaffaCakes118.exe

pid process

4844 640971be320826e9f0f230723a3ace95_JaffaCakes118.exe

pid	process
4844	640971be320826e9f0f230723a3ace95_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 2 IoCs

Processes:

640971be320826e9f0f230723a3ace95_JaffaCakes118.exe

description	pid	process	target process
PID 4844 wrote to memory of 3480	4844	640971be320826e9f0f230723a3ace95_JaffaCakes118.exe	dw20.exe
PID 4844 wrote to memory of 3480	4844	640971be320826e9f0f230723a3ace95_JaffaCakes118.exe	dw20.exe

C:\Users\Admin\AppData\Local\Temp\640971be320826e9f0f230723a3ace95_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\640971be320826e9f0f230723a3ace95_JaffaCakes118.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4844

C:\Windows\Microsoft.NET\Framework64\v2.0.50727\dw20.exe
dw20.exe -x -s 2064
2⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious use of AdjustPrivilegeToken
PID:3480

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 --no-appcompat-clear --field-trial-handle=4624,i,1999448010053300448,1112699187621658374,262144 --variations-seed-version --mojo-platform-channel-handle=4196 /prefetch:8
1⤵
PID:2392

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/4844-0-0x00007FFFE6615000-0x00007FFFE6616000-memory.dmp

Filesize
4KB

Download
memory/4844-2-0x000000001BF10000-0x000000001C3DE000-memory.dmp

Filesize
4.8MB

Download
memory/4844-1-0x00007FFFE6360000-0x00007FFFE6D01000-memory.dmp

Filesize
9.6MB

Download
memory/4844-3-0x00007FFFE6360000-0x00007FFFE6D01000-memory.dmp

Filesize
9.6MB

Download
memory/4844-4-0x000000001B950000-0x000000001B9B2000-memory.dmp

Filesize
392KB

Download
memory/4844-5-0x00007FFFE6360000-0x00007FFFE6D01000-memory.dmp

Filesize
9.6MB

Download
memory/4844-6-0x000000001DC10000-0x000000001DCAC000-memory.dmp

Filesize
624KB

Download
memory/4844-14-0x00007FFFE6360000-0x00007FFFE6D01000-memory.dmp

Filesize
9.6MB

Download