quasar | 278f8ab35d9c561634e5a9ea51dbd1634abb2c5a6fdb58fd8aeb769de7500772

Analysis

max time kernel
149s
max time network
150s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
18-06-2024 19:40

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General

Target

278f8ab35d9c561634e5a9ea51dbd1634abb2c5a6fdb58fd8aeb769de7500772.exe
Size

3.1MB
MD5

d31d13edf1b0218c3abd9d2aa56d70ef
SHA1

bbd910ab3e07db504df3ac3e427e2fac66dd4133
SHA256

278f8ab35d9c561634e5a9ea51dbd1634abb2c5a6fdb58fd8aeb769de7500772
SHA512

6b8a41a51a4d6f5c9ce909567a0c85e6429be61113301057d4f54c6f8243d1d237c6afafc75430f98c3fdd7604363888dadfb452e3ff805a408b424c38d30677
SSDEEP

49152:WvbI22SsaNYfdPBldt698dBcjHksN6fBxQRoGdTTHHB72eh2NT:Wvk22SsaNYfdPBldt6+dBcjHB62

Score

10^/10

quasar office04 spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

192.168.1.112:4782

Mutex

0355605d-7aa8-4c93-be89-20f64f2705f9

Attributes

encryption_key
123371CC562DEA62C4475E1D6A3DEEAA00328E0D
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 payload 1 IoCs

Processes:

resource yara_rule

behavioral1/memory/624-1-0x0000000000C10000-0x0000000000F34000-memory.dmp family_quasar
Detects Windows executables referencing non-Windows User-Agents 1 IoCs

Processes:

resource yara_rule

behavioral1/memory/624-1-0x0000000000C10000-0x0000000000F34000-memory.dmp INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers. 1 IoCs

Processes:

resource yara_rule

behavioral1/memory/624-1-0x0000000000C10000-0x0000000000F34000-memory.dmp INDICATOR_SUSPICIOUS_Binary_References_Browsers
Detects executables containing common artifacts observed in infostealers 1 IoCs

Processes:

resource yara_rule

behavioral1/memory/624-1-0x0000000000C10000-0x0000000000F34000-memory.dmp INDICATOR_SUSPICIOUS_GENInfoStealer
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

278f8ab35d9c561634e5a9ea51dbd1634abb2c5a6fdb58fd8aeb769de7500772.exe

description pid process

Token: SeDebugPrivilege 624 278f8ab35d9c561634e5a9ea51dbd1634abb2c5a6fdb58fd8aeb769de7500772.exe
Suspicious use of FindShellTrayWindow 1 IoCs

Processes:

278f8ab35d9c561634e5a9ea51dbd1634abb2c5a6fdb58fd8aeb769de7500772.exe

pid process

624 278f8ab35d9c561634e5a9ea51dbd1634abb2c5a6fdb58fd8aeb769de7500772.exe
Suspicious use of SendNotifyMessage 1 IoCs

Processes:

278f8ab35d9c561634e5a9ea51dbd1634abb2c5a6fdb58fd8aeb769de7500772.exe

pid process

624 278f8ab35d9c561634e5a9ea51dbd1634abb2c5a6fdb58fd8aeb769de7500772.exe

resource	yara_rule
behavioral1/memory/624-1-0x0000000000C10000-0x0000000000F34000-memory.dmp	family_quasar

resource	yara_rule
behavioral1/memory/624-1-0x0000000000C10000-0x0000000000F34000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA

resource	yara_rule
behavioral1/memory/624-1-0x0000000000C10000-0x0000000000F34000-memory.dmp	INDICATOR_SUSPICIOUS_Binary_References_Browsers

resource	yara_rule
behavioral1/memory/624-1-0x0000000000C10000-0x0000000000F34000-memory.dmp	INDICATOR_SUSPICIOUS_GENInfoStealer

description	pid	process
Token: SeDebugPrivilege	624	278f8ab35d9c561634e5a9ea51dbd1634abb2c5a6fdb58fd8aeb769de7500772.exe

pid	process
624	278f8ab35d9c561634e5a9ea51dbd1634abb2c5a6fdb58fd8aeb769de7500772.exe

pid	process
624	278f8ab35d9c561634e5a9ea51dbd1634abb2c5a6fdb58fd8aeb769de7500772.exe

C:\Users\Admin\AppData\Local\Temp\278f8ab35d9c561634e5a9ea51dbd1634abb2c5a6fdb58fd8aeb769de7500772.exe
"C:\Users\Admin\AppData\Local\Temp\278f8ab35d9c561634e5a9ea51dbd1634abb2c5a6fdb58fd8aeb769de7500772.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
PID:624

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

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Downloads

memory/624-0-0x000007FEF5633000-0x000007FEF5634000-memory.dmp

Filesize
4KB

Download
memory/624-1-0x0000000000C10000-0x0000000000F34000-memory.dmp

Filesize
3.1MB

Download
memory/624-2-0x000007FEF5630000-0x000007FEF601C000-memory.dmp

Filesize
9.9MB

Download
memory/624-3-0x000007FEF5633000-0x000007FEF5634000-memory.dmp

Filesize
4KB

Download
memory/624-4-0x000007FEF5630000-0x000007FEF601C000-memory.dmp

Filesize
9.9MB

Download