quasar | a86c7bf4b03420d6ae80c4ab78f7dd761d53e1b0eabe2a827f295267a03cb32e

Resubmissions

13-12-2024 13:56

241213-q82eeszqgw 10

13-12-2024 13:53

241213-q7e5sszqdt 10

Analysis

max time kernel
117s
max time network
124s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
13-12-2024 13:53

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General

Target

rat2.0.exe
Size

3.1MB
MD5

0ec9d66f466763887c3d957ef04a601a
SHA1

4f3bd499508c12c1d15142db4ccb3633d4a563f9
SHA256

ca6205581da131085d4fd448d7a6cb47627ebf0eeeb7e42d7c1047d18631c9b0
SHA512

ffcaf78789c63171473cd0d173875bf83860be15505181f431ef8557e6509af78130a1aee8a067e076238028fba229bb442bb738cff9401bdb8d204bc24bd13d
SSDEEP

49152:LvTlL26AaNeWgPhlmVqvMQ7XSKZF/jBxgLoGdFHTHHB72eh2NT:LvJL26AaNeWgPhlmVqkQ7XSKz/u

Score

10^/10

quasar office04 discovery spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

192.168.56.1:4782

192.168.42.36:4782

Mutex

a2375055-d323-4f14-953b-13f74ff9f85a

Attributes

encryption_key
36B9F39EDDE38B2DC6E38AA9208FBAD7687FDB50
install_name
Pygame.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 family
quasar

Quasar payload 2 IoCs

resource	yara_rule
behavioral2/memory/3520-1-0x00000000003F0000-0x0000000000714000-memory.dmp	family_quasar
behavioral2/files/0x000a000000023b8b-6.dat	family_quasar

Executes dropped EXE 1 IoCs

pid	Process
3576	Pygame.exe

Drops file in Program Files directory 3 IoCs

description	ioc	Process
File created	C:\Program Files\SubDir\Pygame.exe	rat2.0.exe
File opened for modification	C:\Program Files\SubDir\Pygame.exe	rat2.0.exe
File opened for modification	C:\Program Files\SubDir\Pygame.exe	Pygame.exe

Browser Information Discovery 1 TTPs
Enumerate browser information.
discovery

Browser Information Discovery
T1217

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	msedge.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemManufacturer	msedge.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemProductName	msedge.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2336	msedge.exe
2336	msedge.exe
4456	msedge.exe
4456	msedge.exe
2876	identity_helper.exe
2876	identity_helper.exe

Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary 4 IoCs

pid	Process
4456	msedge.exe
4456	msedge.exe
4456	msedge.exe
4456	msedge.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3520	rat2.0.exe
Token: SeDebugPrivilege	3576	Pygame.exe

Suspicious use of FindShellTrayWindow 25 IoCs

pid	Process
4456	msedge.exe
4456	msedge.exe
4456	msedge.exe
4456	msedge.exe
4456	msedge.exe
4456	msedge.exe
4456	msedge.exe
4456	msedge.exe
4456	msedge.exe
4456	msedge.exe
4456	msedge.exe
4456	msedge.exe
4456	msedge.exe
4456	msedge.exe
4456	msedge.exe
4456	msedge.exe
4456	msedge.exe
4456	msedge.exe
4456	msedge.exe
4456	msedge.exe
4456	msedge.exe
4456	msedge.exe
4456	msedge.exe
4456	msedge.exe
4456	msedge.exe

Suspicious use of SendNotifyMessage 24 IoCs

pid	Process
4456	msedge.exe
4456	msedge.exe
4456	msedge.exe
4456	msedge.exe
4456	msedge.exe
4456	msedge.exe
4456	msedge.exe
4456	msedge.exe
4456	msedge.exe
4456	msedge.exe
4456	msedge.exe
4456	msedge.exe
4456	msedge.exe
4456	msedge.exe
4456	msedge.exe
4456	msedge.exe
4456	msedge.exe
4456	msedge.exe
4456	msedge.exe
4456	msedge.exe
4456	msedge.exe
4456	msedge.exe
4456	msedge.exe
4456	msedge.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3576	Pygame.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 3520 wrote to memory of 3576	3520	rat2.0.exe	82
PID 3520 wrote to memory of 3576	3520	rat2.0.exe	82
PID 4456 wrote to memory of 3348	4456	msedge.exe	97
PID 4456 wrote to memory of 3348	4456	msedge.exe	97
PID 4456 wrote to memory of 3068	4456	msedge.exe	98
PID 4456 wrote to memory of 3068	4456	msedge.exe	98
PID 4456 wrote to memory of 3068	4456	msedge.exe	98
PID 4456 wrote to memory of 3068	4456	msedge.exe	98
PID 4456 wrote to memory of 3068	4456	msedge.exe	98
PID 4456 wrote to memory of 3068	4456	msedge.exe	98
PID 4456 wrote to memory of 3068	4456	msedge.exe	98
PID 4456 wrote to memory of 3068	4456	msedge.exe	98
PID 4456 wrote to memory of 3068	4456	msedge.exe	98
PID 4456 wrote to memory of 3068	4456	msedge.exe	98
PID 4456 wrote to memory of 3068	4456	msedge.exe	98
PID 4456 wrote to memory of 3068	4456	msedge.exe	98
PID 4456 wrote to memory of 3068	4456	msedge.exe	98
PID 4456 wrote to memory of 3068	4456	msedge.exe	98
PID 4456 wrote to memory of 3068	4456	msedge.exe	98
PID 4456 wrote to memory of 3068	4456	msedge.exe	98
PID 4456 wrote to memory of 3068	4456	msedge.exe	98
PID 4456 wrote to memory of 3068	4456	msedge.exe	98
PID 4456 wrote to memory of 3068	4456	msedge.exe	98
PID 4456 wrote to memory of 3068	4456	msedge.exe	98
PID 4456 wrote to memory of 3068	4456	msedge.exe	98
PID 4456 wrote to memory of 3068	4456	msedge.exe	98
PID 4456 wrote to memory of 3068	4456	msedge.exe	98
PID 4456 wrote to memory of 3068	4456	msedge.exe	98
PID 4456 wrote to memory of 3068	4456	msedge.exe	98
PID 4456 wrote to memory of 3068	4456	msedge.exe	98
PID 4456 wrote to memory of 3068	4456	msedge.exe	98
PID 4456 wrote to memory of 3068	4456	msedge.exe	98
PID 4456 wrote to memory of 3068	4456	msedge.exe	98
PID 4456 wrote to memory of 3068	4456	msedge.exe	98
PID 4456 wrote to memory of 3068	4456	msedge.exe	98
PID 4456 wrote to memory of 3068	4456	msedge.exe	98
PID 4456 wrote to memory of 3068	4456	msedge.exe	98
PID 4456 wrote to memory of 3068	4456	msedge.exe	98
PID 4456 wrote to memory of 3068	4456	msedge.exe	98
PID 4456 wrote to memory of 3068	4456	msedge.exe	98
PID 4456 wrote to memory of 3068	4456	msedge.exe	98
PID 4456 wrote to memory of 3068	4456	msedge.exe	98
PID 4456 wrote to memory of 3068	4456	msedge.exe	98
PID 4456 wrote to memory of 3068	4456	msedge.exe	98
PID 4456 wrote to memory of 2336	4456	msedge.exe	99
PID 4456 wrote to memory of 2336	4456	msedge.exe	99
PID 4456 wrote to memory of 2432	4456	msedge.exe	100
PID 4456 wrote to memory of 2432	4456	msedge.exe	100
PID 4456 wrote to memory of 2432	4456	msedge.exe	100
PID 4456 wrote to memory of 2432	4456	msedge.exe	100
PID 4456 wrote to memory of 2432	4456	msedge.exe	100
PID 4456 wrote to memory of 2432	4456	msedge.exe	100
PID 4456 wrote to memory of 2432	4456	msedge.exe	100
PID 4456 wrote to memory of 2432	4456	msedge.exe	100
PID 4456 wrote to memory of 2432	4456	msedge.exe	100
PID 4456 wrote to memory of 2432	4456	msedge.exe	100
PID 4456 wrote to memory of 2432	4456	msedge.exe	100
PID 4456 wrote to memory of 2432	4456	msedge.exe	100
PID 4456 wrote to memory of 2432	4456	msedge.exe	100
PID 4456 wrote to memory of 2432	4456	msedge.exe	100
PID 4456 wrote to memory of 2432	4456	msedge.exe	100
PID 4456 wrote to memory of 2432	4456	msedge.exe	100
PID 4456 wrote to memory of 2432	4456	msedge.exe	100
PID 4456 wrote to memory of 2432	4456	msedge.exe	100

C:\Users\Admin\AppData\Local\Temp\rat2.0.exe
"C:\Users\Admin\AppData\Local\Temp\rat2.0.exe"
1⤵
- Drops file in Program Files directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3520
- C:\Program Files\SubDir\Pygame.exe
  "C:\Program Files\SubDir\Pygame.exe"
  2⤵
  - Executes dropped EXE
  - Drops file in Program Files directory
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:3576

C:\Windows\System32\rundll32.exe
C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
1⤵
PID:4180

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --profile-directory=Default
1⤵
- Enumerates system info in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:4456
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=crashpad-handler "--user-data-dir=C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data" /prefetch:7 --monitor-self-annotation=ptype=crashpad-handler "--database=C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Crashpad" "--metrics-dir=C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data" --annotation=IsOfficialBuild=1 --annotation=channel= --annotation=chromium-version=92.0.4515.131 "--annotation=exe=C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --annotation=plat=Win64 "--annotation=prod=Microsoft Edge" --annotation=ver=92.0.902.67 --initial-client-data=0x11c,0x120,0x124,0xf8,0x128,0x7ff81f4746f8,0x7ff81f474708,0x7ff81f474718
  2⤵
  PID:3348
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=gpu-process --field-trial-handle=2056,3143340671877740120,1434997260948243962,131072 --gpu-preferences=UAAAAAAAAADgAAAQAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHgAAAAAAAAAeAAAAAAAAAAoAAAABAAAACAAAAAAAAAAKAAAAAAAAAAwAAAAAAAAADgAAAAAAAAAEAAAAAAAAAAAAAAADQAAABAAAAAAAAAAAQAAAA0AAAAQAAAAAAAAAAQAAAANAAAAEAAAAAAAAAAHAAAADQAAAAgAAAAAAAAACAAAAAAAAAA= --mojo-platform-channel-handle=2068 /prefetch:2
  2⤵
  PID:3068
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=network.mojom.NetworkService --field-trial-handle=2056,3143340671877740120,1434997260948243962,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=2152 /prefetch:3
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  PID:2336
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=storage.mojom.StorageService --field-trial-handle=2056,3143340671877740120,1434997260948243962,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=2716 /prefetch:8
  2⤵
  PID:2432
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2056,3143340671877740120,1434997260948243962,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=6 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=3412 /prefetch:1
  2⤵
  PID:2780
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2056,3143340671877740120,1434997260948243962,131072 --lang=en-US --disable-client-side-phishing-detection --instant-process --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=5 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=3420 /prefetch:1
  2⤵
  PID:468
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2056,3143340671877740120,1434997260948243962,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=7 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=4972 /prefetch:1
  2⤵
  PID:2976
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2056,3143340671877740120,1434997260948243962,131072 --lang=en-US --disable-client-side-phishing-detection --instant-process --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=8 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=4492 /prefetch:1
  2⤵
  PID:1296
- C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\identity_helper.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\identity_helper.exe" --type=utility --utility-sub-type=winrt_app_id.mojom.WinrtAppIdService --field-trial-handle=2056,3143340671877740120,1434997260948243962,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=3664 /prefetch:8
  2⤵
  PID:1948
- C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\identity_helper.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\identity_helper.exe" --type=utility --utility-sub-type=winrt_app_id.mojom.WinrtAppIdService --field-trial-handle=2056,3143340671877740120,1434997260948243962,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=3664 /prefetch:8
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  PID:2876

C:\Windows\System32\CompPkgSrv.exe
C:\Windows\System32\CompPkgSrv.exe -Embedding
1⤵
PID:624

C:\Windows\System32\CompPkgSrv.exe
C:\Windows\System32\CompPkgSrv.exe -Embedding
1⤵
PID:4576

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Browser Information Discovery

T1217

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Program Files\SubDir\Pygame.exe

Filesize
3.1MB

MD5
0ec9d66f466763887c3d957ef04a601a

SHA1
4f3bd499508c12c1d15142db4ccb3633d4a563f9

SHA256
ca6205581da131085d4fd448d7a6cb47627ebf0eeeb7e42d7c1047d18631c9b0

SHA512
ffcaf78789c63171473cd0d173875bf83860be15505181f431ef8557e6509af78130a1aee8a067e076238028fba229bb442bb738cff9401bdb8d204bc24bd13d

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Crashpad\settings.dat

Filesize
152B

MD5
36988ca14952e1848e81a959880ea217

SHA1
a0482ef725657760502c2d1a5abe0bb37aebaadb

SHA256
d7e96088b37cec1bde202ae8ec2d2f3c3aafc368b6ebd91b3e2985846facf2e6

SHA512
d04b2f5afec92eb3d9f9cdc148a3eddd1b615e0dfb270566a7969576f50881d1f8572bccb8b9fd7993724bdfe36fc7633a33381d43e0b96c4e9bbd53fc010173

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Crashpad\settings.dat

Filesize
152B

MD5
fab8d8d865e33fe195732aa7dcb91c30

SHA1
2637e832f38acc70af3e511f5eba80fbd7461f2c

SHA256
1b034ffe38e534e2b7a21be7c1f207ff84a1d5f3893207d0b4bb1a509b4185ea

SHA512
39a3d43ef7e28fea2cb247a5d09576a4904a43680db8c32139f22a03d80f6ede98708a2452f3f82232b868501340f79c0b3f810f597bcaf5267c3ccfb1704b43

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Preferences

Filesize
5KB

MD5
1800acb613608211f102d9a72c3e34e2

SHA1
56142fcf821dea1d56da1010c098d3b112215a83

SHA256
84bbad341c28bce4be2e9372f9521fdae7dc18aad2694cf86007c5ce3fa0c385

SHA512
6bd7baefffb5fcc6aaa910321fe7e7d32f04f1748d940372590ea6764768008810a5b37be20f2e9eabcd97adb7262329538d0d9e31bd2225696c50608b4203d6

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Preferences

Filesize
6KB

MD5
a81dfc72a2c2c073dc4523e58c9713e0

SHA1
b1641fd898cff5275d17164e7904f7b1e0585c9d

SHA256
7167c889588183e46af8bdb6b718962ac8e00512d225693784609cd3f6410bff

SHA512
279183d9ce9e286b46ac21e7ed0563fc1f47f62353a2fb1689fd4955db96da88f61f594ed3ed4986f5640ba3b2890081aa08daae8d705cf7396aca9f7c44abf0

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\data_reduction_proxy_leveldb\CURRENT

Filesize
16B

MD5
6752a1d65b201c13b62ea44016eb221f

SHA1
58ecf154d01a62233ed7fb494ace3c3d4ffce08b

SHA256
0861415cada612ea5834d56e2cf1055d3e63979b69eb71d32ae9ae394d8306cd

SHA512
9cfd838d3fb570b44fc3461623ab2296123404c6c8f576b0de0aabd9a6020840d4c9125eb679ed384170dbcaac2fa30dc7fa9ee5b77d6df7c344a0aa030e0389

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Local State

Filesize
10KB

MD5
4925b4383282e57e9ebb98b89f4971df

SHA1
9e825d146060bd19df7bf10986737131fab6debf

SHA256
8083fa5b13fbee9fe9daa19e1349300d5edb0ed281c950b4811300eacedbc172

SHA512
38a7f4cf3ebe46140d0032064dff7437fc006c935522c3889f7e688e9831f3e115acb243b911128fd35d44423d25f7a8c1ae224ace8cf214ceb1aed02f33866f

Download Submit
memory/3520-10-0x00007FF828240000-0x00007FF828D01000-memory.dmp

Filesize
10.8MB

Download
memory/3520-0-0x00007FF828243000-0x00007FF828245000-memory.dmp

Filesize
8KB

Download
memory/3520-2-0x00007FF828240000-0x00007FF828D01000-memory.dmp

Filesize
10.8MB

Download
memory/3520-1-0x00000000003F0000-0x0000000000714000-memory.dmp

Filesize
3.1MB

Download
memory/3576-14-0x00007FF828240000-0x00007FF828D01000-memory.dmp

Filesize
10.8MB

Download
memory/3576-13-0x000000001B6A0000-0x000000001B752000-memory.dmp

Filesize
712KB

Download
memory/3576-12-0x000000001B590000-0x000000001B5E0000-memory.dmp

Filesize
320KB

Download
memory/3576-11-0x00007FF828240000-0x00007FF828D01000-memory.dmp

Filesize
10.8MB

Download
memory/3576-9-0x00007FF828240000-0x00007FF828D01000-memory.dmp

Filesize
10.8MB

Download
memory/3576-45-0x000000001C1D0000-0x000000001C6F8000-memory.dmp

Filesize
5.2MB

Download