quasar | 9853295208c86e162ddd6a1d017ce7d137695ad396f9700306c4a9dad56632df

Analysis

max time kernel
138s
max time network
150s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
09-12-2024 00:15

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General

Target

Universal.exe
Size

9.0MB
MD5

42e33381c16d5e851da7389958cee425
SHA1

c0cce4829dbc075fb86a32dee72c55363168a30d
SHA256

9853295208c86e162ddd6a1d017ce7d137695ad396f9700306c4a9dad56632df
SHA512

b338aaf0c24c0ab5cee7018b72f6ec192c014cac9219effb048129d55a075091b1238f1bf4bd66d977b2900a2b0046aaddff90c652a104c6749644c8f8dc1768
SSDEEP

196608:HlDYB/HGe2s2em9572gugYlNVtrIb8bVKj8xe8dmgdM:HVYB/mU2euqn28Yj8xTk5

Score

10^/10

quasar universal discovery pyinstaller spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Universal

adgyhuaadw-64532.portmap.host:64532

Mutex

c4890c4c-6808-49a1-bb34-965e29420868

Attributes

encryption_key
2C237F672DAC6A3056F8BA2A735CF3147385D6C7
install_name
WindowsSecureBoot.exe
log_directory
Logs
reconnect_delay
3000
startup_key
Windows Clean Boot
subdirectory
WindowsSecurityInfo

Signatures

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

Quasar payload 3 IoCs

resource	yara_rule
behavioral1/files/0x0007000000015e48-5.dat	family_quasar
behavioral1/memory/2100-18-0x0000000001090000-0x00000000013B4000-memory.dmp	family_quasar
behavioral1/memory/2816-24-0x00000000003F0000-0x0000000000714000-memory.dmp	family_quasar

Executes dropped EXE 4 IoCs

pid	Process
2100	UniversalDLL.exe
2816	WindowsSecureBoot.exe
2736	universalfront.exe
272	universalfront.exe

Loads dropped DLL 14 IoCs

pid	Process
2532	Universal.exe
2532	Universal.exe
2532	Universal.exe
2532	Universal.exe
2532	Universal.exe
2720	Process not Found
2736	universalfront.exe
272	universalfront.exe
272	universalfront.exe
272	universalfront.exe
272	universalfront.exe
272	universalfront.exe
272	universalfront.exe
272	universalfront.exe

Detects Pyinstaller 1 IoCs

pyinstaller

resource	yara_rule
behavioral1/files/0x000b000000015d79-30.dat	pyinstaller

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 1 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	Universal.exe

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
1580	schtasks.exe
1304	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2100	UniversalDLL.exe
Token: SeDebugPrivilege	2816	WindowsSecureBoot.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2816	WindowsSecureBoot.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 2532 wrote to memory of 2100	2532	Universal.exe	30
PID 2532 wrote to memory of 2100	2532	Universal.exe	30
PID 2532 wrote to memory of 2100	2532	Universal.exe	30
PID 2532 wrote to memory of 2100	2532	Universal.exe	30
PID 2100 wrote to memory of 1304	2100	UniversalDLL.exe	31
PID 2100 wrote to memory of 1304	2100	UniversalDLL.exe	31
PID 2100 wrote to memory of 1304	2100	UniversalDLL.exe	31
PID 2100 wrote to memory of 2816	2100	UniversalDLL.exe	33
PID 2100 wrote to memory of 2816	2100	UniversalDLL.exe	33
PID 2100 wrote to memory of 2816	2100	UniversalDLL.exe	33
PID 2532 wrote to memory of 2736	2532	Universal.exe	34
PID 2532 wrote to memory of 2736	2532	Universal.exe	34
PID 2532 wrote to memory of 2736	2532	Universal.exe	34
PID 2532 wrote to memory of 2736	2532	Universal.exe	34
PID 2736 wrote to memory of 272	2736	universalfront.exe	36
PID 2736 wrote to memory of 272	2736	universalfront.exe	36
PID 2736 wrote to memory of 272	2736	universalfront.exe	36
PID 2816 wrote to memory of 1580	2816	WindowsSecureBoot.exe	37
PID 2816 wrote to memory of 1580	2816	WindowsSecureBoot.exe	37
PID 2816 wrote to memory of 1580	2816	WindowsSecureBoot.exe	37

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\Universal.exe
"C:\Users\Admin\AppData\Local\Temp\Universal.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2532
- C:\Users\Admin\AppData\Local\Temp\RarSFX0\UniversalDLL.exe
  "C:\Users\Admin\AppData\Local\Temp\RarSFX0\UniversalDLL.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2100
- - C:\Windows\system32\schtasks.exe
    "schtasks" /create /tn "Windows Clean Boot" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\WindowsSecurityInfo\WindowsSecureBoot.exe" /rl HIGHEST /f
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:1304
- - C:\Users\Admin\AppData\Roaming\WindowsSecurityInfo\WindowsSecureBoot.exe
    "C:\Users\Admin\AppData\Roaming\WindowsSecurityInfo\WindowsSecureBoot.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:2816
  - - C:\Windows\system32\schtasks.exe
      "schtasks" /create /tn "Windows Clean Boot" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\WindowsSecurityInfo\WindowsSecureBoot.exe" /rl HIGHEST /f
      4⤵
      Scheduled Task/Job: Scheduled Task
      PID:1580
- C:\Users\Admin\AppData\Local\Temp\RarSFX0\universalfront.exe
  "C:\Users\Admin\AppData\Local\Temp\RarSFX0\universalfront.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious use of WriteProcessMemory
  PID:2736
- - C:\Users\Admin\AppData\Local\Temp\RarSFX0\universalfront.exe
    "C:\Users\Admin\AppData\Local\Temp\RarSFX0\universalfront.exe"
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    PID:272

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

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

C:\Users\Admin\AppData\Local\Temp\RarSFX0\universalfront.exe

Filesize
7.7MB

MD5
72c1c0720aae2bb186ba8779c6beed9d

SHA1
8b8d54c15ea45b2c257cb9b848a7a71a1b72cafd

SHA256
ff7bbe7096bdab48f77cab8b67a681fe4ae81de6adad9ee9b3d898fa37aa2b22

SHA512
97e6711ea57e26c2f2f577641a5dd105359bef77adb29cf0ab6386ca51975e151c99d15ef40d7bdd1b88f3f67db275c95ebffffa30685999093f976ddcb55356

Download Submit
C:\Users\Admin\AppData\Local\Temp\_MEI27362\api-ms-win-core-file-l2-1-0.dll

Filesize
18KB

MD5
bfffa7117fd9b1622c66d949bac3f1d7

SHA1
402b7b8f8dcfd321b1d12fc85a1ee5137a5569b2

SHA256
1ea267a2e6284f17dd548c6f2285e19f7edb15d6e737a55391140ce5cb95225e

SHA512
b319cc7b436b1be165cdf6ffcab8a87fe29de78f7e0b14c8f562be160481fb5483289bd5956fdc1d8660da7a3f86d8eede35c6cc2b7c3d4c852decf4b2dcdb7f

Download Submit
C:\Users\Admin\AppData\Local\Temp\_MEI27362\python312.dll

Filesize
6.6MB

MD5
166cc2f997cba5fc011820e6b46e8ea7

SHA1
d6179213afea084f02566ea190202c752286ca1f

SHA256
c045b57348c21f5f810bae60654ae39490846b487378e917595f1f95438f9546

SHA512
49d9d4df3d7ef5737e947a56e48505a2212e05fdbcd7b83d689639728639b7fd3be39506d7cfcb7563576ebee879fd305370fdb203909ed9b522b894dd87aacb

Download Submit
C:\Users\Admin\AppData\Local\Temp\_MEI27362\ucrtbase.dll

Filesize
992KB

MD5
0e0bac3d1dcc1833eae4e3e4cf83c4ef

SHA1
4189f4459c54e69c6d3155a82524bda7549a75a6

SHA256
8a91052ef261b5fbf3223ae9ce789af73dfe1e9b0ba5bdbc4d564870a24f2bae

SHA512
a45946e3971816f66dd7ea3788aacc384a9e95011500b458212dc104741315b85659e0d56a41570731d338bdf182141c093d3ced222c007038583ceb808e26fd

Download Submit
\Users\Admin\AppData\Local\Temp\RarSFX0\UniversalDLL.exe

Filesize
3.1MB

MD5
e01a30acaa24b07f8d80b5cab1db1c8d

SHA1
a34a783ed60a0251d1b63c2206a91a08a0cdb8f3

SHA256
23c5bd035b55416f3d3e7446cd87976c36f0df05744bdf994e7b26cfef319f8b

SHA512
12149a1000687c06d010d594dfa975341c4695b73172d52ce88778555742e814cb59bc1329b682d5e5d1711e817635a88508772a247ca22d2379538a1e371722

Download Submit
\Users\Admin\AppData\Local\Temp\_MEI27362\api-ms-win-core-file-l1-2-0.dll

Filesize
21KB

MD5
1c58526d681efe507deb8f1935c75487

SHA1
0e6d328faf3563f2aae029bc5f2272fb7a742672

SHA256
ef13dce8f71173315dfc64ab839b033ab19a968ee15230e9d4d2c9d558efeee2

SHA512
8edb9a0022f417648e2ece9e22c96e2727976332025c3e7d8f15bcf6d7d97e680d1bf008eb28e2e0bd57787dcbb71d38b2deb995b8edc35fa6852ab1d593f3d1

Download Submit
\Users\Admin\AppData\Local\Temp\_MEI27362\api-ms-win-core-localization-l1-2-0.dll

Filesize
21KB

MD5
724223109e49cb01d61d63a8be926b8f

SHA1
072a4d01e01dbbab7281d9bd3add76f9a3c8b23b

SHA256
4e975f618df01a492ae433dff0dd713774d47568e44c377ceef9e5b34aad1210

SHA512
19b0065b894dc66c30a602c9464f118e7f84d83010e74457d48e93aaca4422812b093b15247b24d5c398b42ef0319108700543d13f156067b169ccfb4d7b6b7c

Download Submit
\Users\Admin\AppData\Local\Temp\_MEI27362\api-ms-win-core-processthreads-l1-1-1.dll

Filesize
21KB

MD5
517eb9e2cb671ae49f99173d7f7ce43f

SHA1
4ccf38fed56166ddbf0b7efb4f5314c1f7d3b7ab

SHA256
57cc66bf0909c430364d35d92b64eb8b6a15dc201765403725fe323f39e8ac54

SHA512
492be2445b10f6bfe6c561c1fc6f5d1af6d1365b7449bc57a8f073b44ae49c88e66841f5c258b041547fcd33cbdcb4eb9dd3e24f0924db32720e51651e9286be

Download Submit
\Users\Admin\AppData\Local\Temp\_MEI27362\api-ms-win-core-timezone-l1-1-0.dll

Filesize
21KB

MD5
d12403ee11359259ba2b0706e5e5111c

SHA1
03cc7827a30fd1dee38665c0cc993b4b533ac138

SHA256
f60e1751a6ac41f08e46480bf8e6521b41e2e427803996b32bdc5e78e9560781

SHA512
9004f4e59835af57f02e8d9625814db56f0e4a98467041da6f1367ef32366ad96e0338d48fff7cc65839a24148e2d9989883bcddc329d9f4d27cae3f843117d0

Download Submit
memory/2100-25-0x000007FEF5310000-0x000007FEF5CFC000-memory.dmp

Filesize
9.9MB

Download
memory/2100-19-0x000007FEF5310000-0x000007FEF5CFC000-memory.dmp

Filesize
9.9MB

Download
memory/2100-18-0x0000000001090000-0x00000000013B4000-memory.dmp

Filesize
3.1MB

Download
memory/2100-17-0x000007FEF5313000-0x000007FEF5314000-memory.dmp

Filesize
4KB

Download
memory/2816-24-0x00000000003F0000-0x0000000000714000-memory.dmp

Filesize
3.1MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads