quasar | 2c13c16331719db777e6d391eb027e47a12c8e6a0cc36e15d7c4003e841997d1

Analysis

max time kernel
209s
max time network
210s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
29-11-2024 18:54

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General

Target

svchost.exe
Size

3.1MB
MD5

27fbdbdac166ee53df824d4e2a1807a0
SHA1

2df4cdbb8cc5861277fbaf1db7790fbd5112137b
SHA256

2c13c16331719db777e6d391eb027e47a12c8e6a0cc36e15d7c4003e841997d1
SHA512

50d5e8309e4a8f00838026b5917c3aed5c7191d9b464e798859251ac55bd5c6b7219811e9be3766a2166dee97cc845e16bfe9a2a7253c0466956b6e656551f14
SSDEEP

49152:vvHI22SsaNYfdPBldt698dBcjHQ2xE1v4LoG/kTHHB72eh2NT:vvo22SsaNYfdPBldt6+dBcjHQ2xH

Score

10^/10

quasar user01 discovery spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

User01

hello383-37009.portmap.host:37009

Mutex

108151be-6bee-4922-a809-562bf18e7d5c

Attributes

encryption_key
2CF5E13B7455B67B54A919C41B45066DC7333545
install_name
svchost.exe
log_directory
Logs
reconnect_delay
3000
startup_key
svchost
subdirectory
systemapps

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/1964-1-0x0000000000410000-0x0000000000734000-memory.dmp	family_quasar
behavioral2/files/0x000a000000023b6c-5.dat	family_quasar

Executes dropped EXE 1 IoCs

pid	Process
2272	svchost.exe

Drops file in System32 directory 5 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system32\systemapps\svchost.exe	svchost.exe
File opened for modification	C:\Windows\system32\systemapps	svchost.exe
File opened for modification	C:\Windows\system32\systemapps\svchost.exe	svchost.exe
File opened for modification	C:\Windows\system32\systemapps	svchost.exe
File created	C:\Windows\system32\systemapps\svchost.exe	svchost.exe

Browser Information Discovery 1 TTPs
Enumerate browser information.
discovery

Browser Information Discovery
T1217
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs

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

persistence execution

Scheduled Task

T1053.005

pid	Process
4360	schtasks.exe
2152	schtasks.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2400	msedge.exe
2400	msedge.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1964	svchost.exe
Token: SeDebugPrivilege	2272	svchost.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2272	svchost.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
2272	svchost.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 1964 wrote to memory of 4360	1964	svchost.exe	82
PID 1964 wrote to memory of 4360	1964	svchost.exe	82
PID 1964 wrote to memory of 2272	1964	svchost.exe	84
PID 1964 wrote to memory of 2272	1964	svchost.exe	84
PID 2272 wrote to memory of 2152	2272	svchost.exe	85
PID 2272 wrote to memory of 2152	2272	svchost.exe	85
PID 1928 wrote to memory of 2712	1928	msedge.exe	100
PID 1928 wrote to memory of 2712	1928	msedge.exe	100
PID 1928 wrote to memory of 956	1928	msedge.exe	101
PID 1928 wrote to memory of 956	1928	msedge.exe	101
PID 1928 wrote to memory of 956	1928	msedge.exe	101
PID 1928 wrote to memory of 956	1928	msedge.exe	101
PID 1928 wrote to memory of 956	1928	msedge.exe	101
PID 1928 wrote to memory of 956	1928	msedge.exe	101
PID 1928 wrote to memory of 956	1928	msedge.exe	101
PID 1928 wrote to memory of 956	1928	msedge.exe	101
PID 1928 wrote to memory of 956	1928	msedge.exe	101
PID 1928 wrote to memory of 956	1928	msedge.exe	101
PID 1928 wrote to memory of 956	1928	msedge.exe	101
PID 1928 wrote to memory of 956	1928	msedge.exe	101
PID 1928 wrote to memory of 956	1928	msedge.exe	101
PID 1928 wrote to memory of 956	1928	msedge.exe	101
PID 1928 wrote to memory of 956	1928	msedge.exe	101
PID 1928 wrote to memory of 956	1928	msedge.exe	101
PID 1928 wrote to memory of 956	1928	msedge.exe	101
PID 1928 wrote to memory of 956	1928	msedge.exe	101
PID 1928 wrote to memory of 956	1928	msedge.exe	101
PID 1928 wrote to memory of 956	1928	msedge.exe	101
PID 1928 wrote to memory of 956	1928	msedge.exe	101
PID 1928 wrote to memory of 956	1928	msedge.exe	101
PID 1928 wrote to memory of 956	1928	msedge.exe	101
PID 1928 wrote to memory of 956	1928	msedge.exe	101
PID 1928 wrote to memory of 956	1928	msedge.exe	101
PID 1928 wrote to memory of 956	1928	msedge.exe	101
PID 1928 wrote to memory of 956	1928	msedge.exe	101
PID 1928 wrote to memory of 956	1928	msedge.exe	101
PID 1928 wrote to memory of 956	1928	msedge.exe	101
PID 1928 wrote to memory of 956	1928	msedge.exe	101
PID 1928 wrote to memory of 956	1928	msedge.exe	101
PID 1928 wrote to memory of 956	1928	msedge.exe	101
PID 1928 wrote to memory of 956	1928	msedge.exe	101
PID 1928 wrote to memory of 956	1928	msedge.exe	101
PID 1928 wrote to memory of 956	1928	msedge.exe	101
PID 1928 wrote to memory of 956	1928	msedge.exe	101
PID 1928 wrote to memory of 956	1928	msedge.exe	101
PID 1928 wrote to memory of 956	1928	msedge.exe	101
PID 1928 wrote to memory of 956	1928	msedge.exe	101
PID 1928 wrote to memory of 956	1928	msedge.exe	101
PID 1928 wrote to memory of 2400	1928	msedge.exe	103
PID 1928 wrote to memory of 2400	1928	msedge.exe	103
PID 1928 wrote to memory of 3152	1928	msedge.exe	104
PID 1928 wrote to memory of 3152	1928	msedge.exe	104
PID 1928 wrote to memory of 3152	1928	msedge.exe	104
PID 1928 wrote to memory of 3152	1928	msedge.exe	104
PID 1928 wrote to memory of 3152	1928	msedge.exe	104
PID 1928 wrote to memory of 3152	1928	msedge.exe	104
PID 1928 wrote to memory of 3152	1928	msedge.exe	104
PID 1928 wrote to memory of 3152	1928	msedge.exe	104
PID 1928 wrote to memory of 3152	1928	msedge.exe	104
PID 1928 wrote to memory of 3152	1928	msedge.exe	104
PID 1928 wrote to memory of 3152	1928	msedge.exe	104
PID 1928 wrote to memory of 3152	1928	msedge.exe	104
PID 1928 wrote to memory of 3152	1928	msedge.exe	104
PID 1928 wrote to memory of 3152	1928	msedge.exe	104

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Users\Admin\AppData\Local\Temp\svchost.exe
"C:\Users\Admin\AppData\Local\Temp\svchost.exe"
1⤵
- Drops file in System32 directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1964
- C:\Windows\SYSTEM32\schtasks.exe
  "schtasks" /create /tn "svchost" /sc ONLOGON /tr "C:\Windows\system32\systemapps\svchost.exe" /rl HIGHEST /f
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:4360
- C:\Windows\system32\systemapps\svchost.exe
  "C:\Windows\system32\systemapps\svchost.exe"
  2⤵
  - Executes dropped EXE
  - Drops file in System32 directory
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  - Suspicious use of WriteProcessMemory
  PID:2272
- - C:\Windows\SYSTEM32\schtasks.exe
    "schtasks" /create /tn "svchost" /sc ONLOGON /tr "C:\Windows\system32\systemapps\svchost.exe" /rl HIGHEST /f
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:2152

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -p -s DisplayEnhancementService
1⤵
PID:4996

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --default-search-provider=? --out-pipe-name=MSEdgeDefault008b3219hac29h4f8dhbc49hcdf26c35df3f
1⤵
- Suspicious use of WriteProcessMemory
PID:1928
- 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=0x120,0x124,0x128,0xfc,0x12c,0x7ff90d4346f8,0x7ff90d434708,0x7ff90d434718
  2⤵
  PID:2712
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=gpu-process --field-trial-handle=2084,13906307111035253795,3428633033628966992,131072 --gpu-preferences=UAAAAAAAAADgAAAQAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHgAAAAAAAAAeAAAAAAAAAAoAAAABAAAACAAAAAAAAAAKAAAAAAAAAAwAAAAAAAAADgAAAAAAAAAEAAAAAAAAAAAAAAADQAAABAAAAAAAAAAAQAAAA0AAAAQAAAAAAAAAAQAAAANAAAAEAAAAAAAAAAHAAAADQAAAAgAAAAAAAAACAAAAAAAAAA= --mojo-platform-channel-handle=2096 /prefetch:2
  2⤵
  PID:956
- 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=2084,13906307111035253795,3428633033628966992,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=2208 /prefetch:3
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  PID:2400
- 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=2084,13906307111035253795,3428633033628966992,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=2868 /prefetch:8
  2⤵
  PID:3152

C:\Windows\System32\CompPkgSrv.exe
C:\Windows\System32\CompPkgSrv.exe -Embedding
1⤵
PID:800

C:\Windows\System32\CompPkgSrv.exe
C:\Windows\System32\CompPkgSrv.exe -Embedding
1⤵
PID:2396

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

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:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\svchost.exe.log

Filesize
1KB

MD5
baf55b95da4a601229647f25dad12878

SHA1
abc16954ebfd213733c4493fc1910164d825cac8

SHA256
ee954c5d8156fd8890e582c716e5758ed9b33721258f10e758bdc31ccbcb1924

SHA512
24f502fedb1a305d0d7b08857ffc1db9b2359ff34e06d5748ecc84e35c985f29a20d9f0a533bea32d234ab37097ec0481620c63b14ac89b280e75e14d19fd545

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\Default\6b10d893-5f54-4de1-9484-6dd60a67b8f5.tmp

Filesize
5KB

MD5
0a679adc2f70eb4f803f08cde07ac85c

SHA1
e5a48afa745a0502da2513cb71c72a7ed65b7a51

SHA256
3b14c149af78003a16f767226ca3b83c62ce539fad0e14af67998471a8c84583

SHA512
660505ed58e9086afe6fd0bb0db44ae62bb4de03911a04dceb6820c82debc3f24c2b07471a6c89f9f40d65dc582622c20d27ec0e9874f5a487a8b14c638374f5

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

Filesize
8KB

MD5
9b482a1c5470d1737837d0c70ca53fc2

SHA1
4ee81da4b3dfd1087a609b2725b33e2c5a2d30a3

SHA256
705ad9ece5a06b737a32792103d1ce23274968dc4597145c0114231eb8dbc48d

SHA512
73fb9107f5a845a631f7fb46702cb9216d54f724af0bd4c45a7a4110af956f495b3e74ec3f0f7c513b6db121ee725f0ba238a9f19dd144db733efb1111b78db6

Download Submit
C:\Windows\System32\systemapps\svchost.exe

Filesize
3.1MB

MD5
27fbdbdac166ee53df824d4e2a1807a0

SHA1
2df4cdbb8cc5861277fbaf1db7790fbd5112137b

SHA256
2c13c16331719db777e6d391eb027e47a12c8e6a0cc36e15d7c4003e841997d1

SHA512
50d5e8309e4a8f00838026b5917c3aed5c7191d9b464e798859251ac55bd5c6b7219811e9be3766a2166dee97cc845e16bfe9a2a7253c0466956b6e656551f14

Download Submit
memory/1964-0-0x00007FF916683000-0x00007FF916685000-memory.dmp

Filesize
8KB

Download
memory/1964-1-0x0000000000410000-0x0000000000734000-memory.dmp

Filesize
3.1MB

Download
memory/2272-9-0x00007FF916680000-0x00007FF917141000-memory.dmp

Filesize
10.8MB

Download
memory/2272-10-0x000000001D1B0000-0x000000001D200000-memory.dmp

Filesize
320KB

Download
memory/2272-11-0x000000001D2C0000-0x000000001D372000-memory.dmp

Filesize
712KB

Download
memory/2272-12-0x00007FF916680000-0x00007FF917141000-memory.dmp

Filesize
10.8MB

Download