quasar | 8a60c64250d871c3dad6f5501a9cf864f390101dafd5d67b580ded24eba72c49

General

Target

6Pax trip details.xlsx.exe
Size

566KB
MD5

cb2d2a48d646ebb9c773171d92b5bc41
SHA1

5e075d1420f4a631175ae31ef5261e4a87026c66
SHA256

4f795fed198da9f27a68dd60cb478ef768764da2f9d141e94c5f2624c85d4b13
SHA512

fe7f0741d71ee678a1b71a9cd33afe42cbfcd5741209b5bf838e7ae17ba2e13f161ea7a55b4eb2f08c7f749409d4dda32a2e040a725e13c7ae5b5c8526a9fcb9
SSDEEP

6144:csLsuwSdHTYloqvGyHJxnDrkbpvSU+fLN/+1n48qkEBmjbu60LROa+En4:XUszYloqvGdlaNLs4Ru3u60RO

Score

10^/10

quasar acs hope discovery spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.3.0.0

Botnet

ACS hope

C2

crazydns.linkpc.net:26133

Mutex

QSR_MUTEX_6iGAmxpR39hpOQEFqk

Attributes

encryption_key
qiJ37BhO6EEtAoSo8ukb
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 5 IoCs

resource	yara_rule
behavioral1/memory/2892-9-0x0000000000400000-0x000000000045E000-memory.dmp	family_quasar
behavioral1/memory/2892-13-0x0000000000400000-0x000000000045E000-memory.dmp	family_quasar
behavioral1/memory/2892-11-0x0000000000400000-0x000000000045E000-memory.dmp	family_quasar
behavioral1/memory/2892-7-0x0000000000400000-0x000000000045E000-memory.dmp	family_quasar
behavioral1/memory/2892-6-0x0000000000400000-0x000000000045E000-memory.dmp	family_quasar

Looks up external IP address via web service 1 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
2	ip-api.com

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2136 set thread context of 2892	2136	6Pax trip details.xlsx.exe	31

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	Caspol.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2892	Caspol.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2892	Caspol.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 2136 wrote to memory of 2892	2136	6Pax trip details.xlsx.exe	31
PID 2136 wrote to memory of 2892	2136	6Pax trip details.xlsx.exe	31
PID 2136 wrote to memory of 2892	2136	6Pax trip details.xlsx.exe	31
PID 2136 wrote to memory of 2892	2136	6Pax trip details.xlsx.exe	31
PID 2136 wrote to memory of 2892	2136	6Pax trip details.xlsx.exe	31
PID 2136 wrote to memory of 2892	2136	6Pax trip details.xlsx.exe	31
PID 2136 wrote to memory of 2892	2136	6Pax trip details.xlsx.exe	31
PID 2136 wrote to memory of 2892	2136	6Pax trip details.xlsx.exe	31
PID 2136 wrote to memory of 2892	2136	6Pax trip details.xlsx.exe	31

C:\Users\Admin\AppData\Local\Temp\6Pax trip details.xlsx.exe
"C:\Users\Admin\AppData\Local\Temp\6Pax trip details.xlsx.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2136
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\Caspol.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\Caspol.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:2892

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/2136-0-0x000007FEF5F93000-0x000007FEF5F94000-memory.dmp

Filesize
4KB

Download
memory/2136-1-0x00000000011F0000-0x000000000127E000-memory.dmp

Filesize
568KB

Download
memory/2136-2-0x0000000000540000-0x0000000000550000-memory.dmp

Filesize
64KB

Download
memory/2136-3-0x000007FEF5F90000-0x000007FEF697C000-memory.dmp

Filesize
9.9MB

Download
memory/2136-15-0x000007FEF5F90000-0x000007FEF697C000-memory.dmp

Filesize
9.9MB

Download
memory/2892-8-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2892-13-0x0000000000400000-0x000000000045E000-memory.dmp

Filesize
376KB

Download
memory/2892-11-0x0000000000400000-0x000000000045E000-memory.dmp

Filesize
376KB

Download
memory/2892-9-0x0000000000400000-0x000000000045E000-memory.dmp

Filesize
376KB

Download
memory/2892-7-0x0000000000400000-0x000000000045E000-memory.dmp

Filesize
376KB

Download
memory/2892-6-0x0000000000400000-0x000000000045E000-memory.dmp

Filesize
376KB

Download
memory/2892-4-0x0000000000400000-0x000000000045E000-memory.dmp

Filesize
376KB

Download
memory/2892-14-0x000000007463E000-0x000000007463F000-memory.dmp

Filesize
4KB

Download
memory/2892-5-0x0000000000400000-0x000000000045E000-memory.dmp

Filesize
376KB

Download
memory/2892-16-0x0000000074630000-0x0000000074D1E000-memory.dmp

Filesize
6.9MB

Download
memory/2892-18-0x000000007463E000-0x000000007463F000-memory.dmp

Filesize
4KB

Download
memory/2892-19-0x0000000074630000-0x0000000074D1E000-memory.dmp

Filesize
6.9MB

Download

Analysis

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