quasar | 7f3c5bf53129adfeb789c38f8dabda4b997545ad6a92d85cd1cb43a47e4417b2

General

Target

SeronObf.exe
Size

3.1MB
MD5

44177e3bdbc790c06a268a02dced77c4
SHA1

13578ac3ea2bb995f6f846a27ca82de1b3186db7
SHA256

7f3c5bf53129adfeb789c38f8dabda4b997545ad6a92d85cd1cb43a47e4417b2
SHA512

790e3ad20b45c6233453b9ca00e4939e6c6dcf966d276c66843ce5dbf60400cfb4df77933d77de97f2aab3d40c5a4c5a6fdc2af36ae2cac2af67789589021bc7
SSDEEP

98304:kIDq/kB9hLn7+YOBqJaQbmOsAdcpLrQVv3N:TDvZLn7+YOsMQbBQrm

Score

10^/10

quasar seron discovery spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Seron

C2

nigeboc465-58875.portmap.host:58875

Mutex

eb8602ec-8a0d-4322-b9a0-544571be5a2d

Attributes

encryption_key
8BD9150EEC3DA71ED82080D7AEB7C165A58C889F
install_name
f8mk7ZGwVUpulm.exe
log_directory
Logs
reconnect_delay
3000
startup_key
f8mk7ZGwVUpulm
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/3904-11-0x0000000000400000-0x0000000000724000-memory.dmp	family_quasar

Executes dropped EXE 1 IoCs

pid	Process
1052	f8mk7ZGwVUpulm.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3164 set thread context of 3904	3164	SeronObf.exe	99

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	f8mk7ZGwVUpulm.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	SeronObf.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegAsm.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
3244	schtasks.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3904	RegAsm.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 3164 wrote to memory of 3904	3164	SeronObf.exe	99
PID 3164 wrote to memory of 3904	3164	SeronObf.exe	99
PID 3164 wrote to memory of 3904	3164	SeronObf.exe	99
PID 3164 wrote to memory of 3904	3164	SeronObf.exe	99
PID 3164 wrote to memory of 3904	3164	SeronObf.exe	99
PID 3164 wrote to memory of 3904	3164	SeronObf.exe	99
PID 3164 wrote to memory of 3904	3164	SeronObf.exe	99
PID 3164 wrote to memory of 3904	3164	SeronObf.exe	99
PID 3904 wrote to memory of 3244	3904	RegAsm.exe	100
PID 3904 wrote to memory of 3244	3904	RegAsm.exe	100
PID 3904 wrote to memory of 3244	3904	RegAsm.exe	100
PID 3904 wrote to memory of 1052	3904	RegAsm.exe	102
PID 3904 wrote to memory of 1052	3904	RegAsm.exe	102
PID 3904 wrote to memory of 1052	3904	RegAsm.exe	102

C:\Users\Admin\AppData\Local\Temp\SeronObf.exe
"C:\Users\Admin\AppData\Local\Temp\SeronObf.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3164
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3904
- - C:\Windows\SysWOW64\schtasks.exe
    "schtasks" /create /tn "f8mk7ZGwVUpulm" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\f8mk7ZGwVUpulm.exe" /rl HIGHEST /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:3244
- - C:\Users\Admin\AppData\Roaming\SubDir\f8mk7ZGwVUpulm.exe
    "C:\Users\Admin\AppData\Roaming\SubDir\f8mk7ZGwVUpulm.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:1052

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\SubDir\f8mk7ZGwVUpulm.exe

Filesize
63KB

MD5
0d5df43af2916f47d00c1573797c1a13

SHA1
230ab5559e806574d26b4c20847c368ed55483b0

SHA256
c066aee7aa3aa83f763ebc5541daa266ed6c648fbffcde0d836a13b221bb2adc

SHA512
f96cf9e1890746b12daf839a6d0f16f062b72c1b8a40439f96583f242980f10f867720232a6fa0f7d4d7ac0a7a6143981a5a130d6417ea98b181447134c7cfe2

Download Submit
memory/1052-26-0x00000000750C0000-0x0000000075870000-memory.dmp

Filesize
7.7MB

Download
memory/1052-24-0x00000000750C0000-0x0000000075870000-memory.dmp

Filesize
7.7MB

Download
memory/1052-22-0x0000000000940000-0x0000000000952000-memory.dmp

Filesize
72KB

Download
memory/3164-6-0x00000000051B0000-0x0000000005226000-memory.dmp

Filesize
472KB

Download
memory/3164-3-0x0000000004F40000-0x0000000004FD2000-memory.dmp

Filesize
584KB

Download
memory/3164-5-0x00000000750C0000-0x0000000075870000-memory.dmp

Filesize
7.7MB

Download
memory/3164-7-0x00000000750CE000-0x00000000750CF000-memory.dmp

Filesize
4KB

Download
memory/3164-8-0x00000000750C0000-0x0000000075870000-memory.dmp

Filesize
7.7MB

Download
memory/3164-9-0x0000000005AA0000-0x0000000005DC8000-memory.dmp

Filesize
3.2MB

Download
memory/3164-10-0x0000000005070000-0x000000000508E000-memory.dmp

Filesize
120KB

Download
memory/3164-0-0x00000000750CE000-0x00000000750CF000-memory.dmp

Filesize
4KB

Download
memory/3164-1-0x0000000000320000-0x0000000000648000-memory.dmp

Filesize
3.2MB

Download
memory/3164-14-0x00000000750C0000-0x0000000075870000-memory.dmp

Filesize
7.7MB

Download
memory/3164-2-0x00000000054F0000-0x0000000005A94000-memory.dmp

Filesize
5.6MB

Download
memory/3164-4-0x0000000004F00000-0x0000000004F0A000-memory.dmp

Filesize
40KB

Download
memory/3904-11-0x0000000000400000-0x0000000000724000-memory.dmp

Filesize
3.1MB

Download
memory/3904-23-0x00000000750C0000-0x0000000075870000-memory.dmp

Filesize
7.7MB

Download
memory/3904-15-0x00000000750C0000-0x0000000075870000-memory.dmp

Filesize
7.7MB

Download
memory/3904-13-0x00000000750C0000-0x0000000075870000-memory.dmp

Filesize
7.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads