quasar | c65b83606a089611551d7bf9bc8d4956d862fb37f6bec4e76b247bbbd98c4934

General

Target

c65b83606a089611551d7bf9bc8d4956d862fb37f6bec4e76b247bbbd98c4934.exe
Size

341KB
MD5

57ada6de9e6c1ca1ed2045a4644fde8e
SHA1

a4a67a013064965d7a926949a1db93fd8b9d9b44
SHA256

c65b83606a089611551d7bf9bc8d4956d862fb37f6bec4e76b247bbbd98c4934
SHA512

0e558ebbc07da774b42dbc5adab006cd65b2254e4dde4d1d9f721c043cc36799d1eacfb8c4e8a21173dc5418c3486b6b446d03d73b27f77981f56025cb1febb7
SSDEEP

6144:oLRmi19KZRIo4sY7d+nTzTzTFPsWo2bMmIo7+vfep09:m19KIonkditIoufI09

Score

10^/10

quasar chamutlda discovery spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.3.0.0

Botnet

CHAMUTLDA

C2

xowite7203-56864.portmap.host:56864

Mutex

QSR_MUTEX_b1MzVBeB2fgsMGAB8R

Attributes

encryption_key
A4r7dFvwva7oUnxJWxHI
install_name
Client.exe
log_directory
Logs
reconnect_delay
3000
startup_key
System
subdirectory
System32

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/2844-1-0x0000000000630000-0x000000000068C000-memory.dmp	family_quasar
behavioral2/files/0x0007000000023c86-10.dat	family_quasar

Executes dropped EXE 1 IoCs

pid	Process
2668	Client.exe

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
11	ip-api.com

System Location Discovery: System Language Discovery 1 TTPs 4 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	c65b83606a089611551d7bf9bc8d4956d862fb37f6bec4e76b247bbbd98c4934.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Client.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.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
3748	schtasks.exe
2664	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2844	c65b83606a089611551d7bf9bc8d4956d862fb37f6bec4e76b247bbbd98c4934.exe
Token: SeDebugPrivilege	2668	Client.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 2844 wrote to memory of 3748	2844	c65b83606a089611551d7bf9bc8d4956d862fb37f6bec4e76b247bbbd98c4934.exe	84
PID 2844 wrote to memory of 3748	2844	c65b83606a089611551d7bf9bc8d4956d862fb37f6bec4e76b247bbbd98c4934.exe	84
PID 2844 wrote to memory of 3748	2844	c65b83606a089611551d7bf9bc8d4956d862fb37f6bec4e76b247bbbd98c4934.exe	84
PID 2844 wrote to memory of 2668	2844	c65b83606a089611551d7bf9bc8d4956d862fb37f6bec4e76b247bbbd98c4934.exe	86
PID 2844 wrote to memory of 2668	2844	c65b83606a089611551d7bf9bc8d4956d862fb37f6bec4e76b247bbbd98c4934.exe	86
PID 2844 wrote to memory of 2668	2844	c65b83606a089611551d7bf9bc8d4956d862fb37f6bec4e76b247bbbd98c4934.exe	86
PID 2668 wrote to memory of 2664	2668	Client.exe	88
PID 2668 wrote to memory of 2664	2668	Client.exe	88
PID 2668 wrote to memory of 2664	2668	Client.exe	88

C:\Users\Admin\AppData\Local\Temp\c65b83606a089611551d7bf9bc8d4956d862fb37f6bec4e76b247bbbd98c4934.exe
"C:\Users\Admin\AppData\Local\Temp\c65b83606a089611551d7bf9bc8d4956d862fb37f6bec4e76b247bbbd98c4934.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2844
- C:\Windows\SysWOW64\schtasks.exe
  "schtasks" /create /tn "System" /sc ONLOGON /tr "C:\Users\Admin\AppData\Local\Temp\c65b83606a089611551d7bf9bc8d4956d862fb37f6bec4e76b247bbbd98c4934.exe" /rl HIGHEST /f
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:3748
- C:\Users\Admin\AppData\Roaming\System32\Client.exe
  "C:\Users\Admin\AppData\Roaming\System32\Client.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2668
- - C:\Windows\SysWOW64\schtasks.exe
    "schtasks" /create /tn "System" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\System32\Client.exe" /rl HIGHEST /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:2664

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Credential Access

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\System32\Client.exe

Filesize
341KB

MD5
57ada6de9e6c1ca1ed2045a4644fde8e

SHA1
a4a67a013064965d7a926949a1db93fd8b9d9b44

SHA256
c65b83606a089611551d7bf9bc8d4956d862fb37f6bec4e76b247bbbd98c4934

SHA512
0e558ebbc07da774b42dbc5adab006cd65b2254e4dde4d1d9f721c043cc36799d1eacfb8c4e8a21173dc5418c3486b6b446d03d73b27f77981f56025cb1febb7

Download Submit
memory/2668-17-0x0000000074730000-0x0000000074EE0000-memory.dmp

Filesize
7.7MB

Download
memory/2668-16-0x00000000066B0000-0x00000000066BA000-memory.dmp

Filesize
40KB

Download
memory/2668-15-0x0000000074730000-0x0000000074EE0000-memory.dmp

Filesize
7.7MB

Download
memory/2668-13-0x0000000074730000-0x0000000074EE0000-memory.dmp

Filesize
7.7MB

Download
memory/2844-3-0x0000000004FC0000-0x0000000005052000-memory.dmp

Filesize
584KB

Download
memory/2844-6-0x0000000005C60000-0x0000000005C72000-memory.dmp

Filesize
72KB

Download
memory/2844-7-0x00000000061A0000-0x00000000061DC000-memory.dmp

Filesize
240KB

Download
memory/2844-5-0x0000000005060000-0x00000000050C6000-memory.dmp

Filesize
408KB

Download
memory/2844-4-0x0000000074730000-0x0000000074EE0000-memory.dmp

Filesize
7.7MB

Download
memory/2844-14-0x0000000074730000-0x0000000074EE0000-memory.dmp

Filesize
7.7MB

Download
memory/2844-0-0x000000007473E000-0x000000007473F000-memory.dmp

Filesize
4KB

Download
memory/2844-2-0x0000000005490000-0x0000000005A34000-memory.dmp

Filesize
5.6MB

Download
memory/2844-1-0x0000000000630000-0x000000000068C000-memory.dmp

Filesize
368KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads