quasar | 20718a2749f22cb1fa604c78b4efe205355717e4ba57aa00323955971da8cfae

General

Target

app1.exe
Size

2.9MB
MD5

e59dd92db4f4ffcebf9234b9e7f6d5ef
SHA1

062d9b937f1aa328d9d47b5dcd906d627c9f1ab5
SHA256

20718a2749f22cb1fa604c78b4efe205355717e4ba57aa00323955971da8cfae
SHA512

23c5cfec42854c5fc2ccc3a326be871f781e851ec46015318c87ecde308bc17f8f8648023c557a6342c2a68deb13a133dfc8a03a433830dddc815f3db98313ec
SSDEEP

49152:fvWI22SsaNYfdPBldt698dBcjHHWoI8THHB72eh2NT:fv722SsaNYfdPBldt6+dBcjHHW

Score

10^/10

quasar kdotcrypt spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

KDOTCrypt

C2

fedx.ddns.net:7000

Mutex

05ed390b-a98b-426c-bddb-fc4eab59ee87

Attributes

encryption_key
92470F4731518ABFA77DC89068544FB7E7B7C459
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 family
quasar

Quasar payload 1 IoCs

resource	yara_rule
behavioral2/memory/1348-1-0x0000000000690000-0x000000000097E000-memory.dmp	family_quasar

Modifies system certificate store 2 TTPs 2 IoCs

evasion spyware trojan

Install Root Certificate

T1553.004

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D1EB23A46D17D68FD92564C2F1F1601764D8E349	app1.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D1EB23A46D17D68FD92564C2F1F1601764D8E349\Blob = 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	app1.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1348	app1.exe

C:\Users\Admin\AppData\Local\Temp\app1.exe
"C:\Users\Admin\AppData\Local\Temp\app1.exe"
1⤵
- Modifies system certificate store
- Suspicious use of AdjustPrivilegeToken
PID:1348

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Subvert Trust Controls

1

T1553

Install Root Certificate

1

T1553.004

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

memory/1348-0-0x00007FFB497F3000-0x00007FFB497F5000-memory.dmp

Filesize
8KB

Download
memory/1348-1-0x0000000000690000-0x000000000097E000-memory.dmp

Filesize
2.9MB

Download
memory/1348-2-0x00007FFB497F0000-0x00007FFB4A2B1000-memory.dmp

Filesize
10.8MB

Download
memory/1348-3-0x000000001B5F0000-0x000000001B640000-memory.dmp

Filesize
320KB

Download
memory/1348-4-0x000000001BA50000-0x000000001BB02000-memory.dmp

Filesize
712KB

Download
memory/1348-7-0x000000001B670000-0x000000001B682000-memory.dmp

Filesize
72KB

Download
memory/1348-8-0x000000001B9D0000-0x000000001BA0C000-memory.dmp

Filesize
240KB

Download
memory/1348-9-0x00007FFB497F3000-0x00007FFB497F5000-memory.dmp

Filesize
8KB

Download
memory/1348-10-0x000000001C250000-0x000000001C352000-memory.dmp

Filesize
1.0MB

Download
memory/1348-11-0x00007FFB497F0000-0x00007FFB4A2B1000-memory.dmp

Filesize
10.8MB

Download

Analysis

Sharing