quasar | bf07e9ac79ed258fa40f5c00e1b06e88a7648926f9351f4b860352a7d8a1f7ab

General

Target

bf07e9ac79ed258fa40f5c00e1b06e88a7648926f9351f4b860352a7d8a1f7abN.exe
Size

876KB
MD5

96ada2b7d27c62da2635104a0b1d71d0
SHA1

8730396d2c4adcb2b2531ca207d3338604622f15
SHA256

bf07e9ac79ed258fa40f5c00e1b06e88a7648926f9351f4b860352a7d8a1f7ab
SHA512

1084cd57f87c6610897711f2107705d9fdfacb402a9ca4cf8624c04d00d6c04cbeb239b6945484387f22e500d8afcda090379bc25f659b0f0b9fd111422b4215
SSDEEP

24576:weKxzRSGSL0v0mMO5PKDRwszHMC8hrAaRKG:BKxVpSL0AiyDysAC8hrZ

Score

10^/10

quasar aoy discovery spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.3.0.0

Botnet

AOY

C2

87.120.120.27:61540

127.0.0.1:61540

87.121.86.205:61541

Mutex

QSR_MUTEX_NOCv4TURf46HbVbxyc

Attributes

encryption_key
fVsndNhImy9VosyZSQbQ
install_name
updates.exe
log_directory
Logs
reconnect_delay
4000
startup_key
Windows Update
subdirectory
Windows

Signatures

Quasar RAT
Quasar is an open source Remote Access Tool.
trojan spyware quasar
Quasar family
quasar

Quasar payload 1 IoCs

Processes:

resource	yara_rule
behavioral2/memory/2200-9-0x0000000000400000-0x000000000045E000-memory.dmp	family_quasar

Executes dropped EXE 2 IoCs

Processes:

updates.exeupdates.exe

pid	Process
876	updates.exe
1292	updates.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.

Processes:

flow	ioc
14	ip-api.com

Suspicious use of SetThreadContext 2 IoCs

Processes:

bf07e9ac79ed258fa40f5c00e1b06e88a7648926f9351f4b860352a7d8a1f7abN.exeupdates.exe

description	pid	Process	procid_target
PID 4968 set thread context of 2200	4968	bf07e9ac79ed258fa40f5c00e1b06e88a7648926f9351f4b860352a7d8a1f7abN.exe	82
PID 876 set thread context of 1292	876	updates.exe	90

System Location Discovery: System Language Discovery 1 TTPs 6 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

Processes:

updates.exeschtasks.exebf07e9ac79ed258fa40f5c00e1b06e88a7648926f9351f4b860352a7d8a1f7abN.exebf07e9ac79ed258fa40f5c00e1b06e88a7648926f9351f4b860352a7d8a1f7abN.exeschtasks.exeupdates.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	updates.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	bf07e9ac79ed258fa40f5c00e1b06e88a7648926f9351f4b860352a7d8a1f7abN.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	bf07e9ac79ed258fa40f5c00e1b06e88a7648926f9351f4b860352a7d8a1f7abN.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	updates.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

Processes:

schtasks.exeschtasks.exe

pid	Process
4228	schtasks.exe
532	schtasks.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

Processes:

bf07e9ac79ed258fa40f5c00e1b06e88a7648926f9351f4b860352a7d8a1f7abN.exebf07e9ac79ed258fa40f5c00e1b06e88a7648926f9351f4b860352a7d8a1f7abN.exeupdates.exeupdates.exe

description	pid	Process
Token: SeDebugPrivilege	4968	bf07e9ac79ed258fa40f5c00e1b06e88a7648926f9351f4b860352a7d8a1f7abN.exe
Token: SeDebugPrivilege	2200	bf07e9ac79ed258fa40f5c00e1b06e88a7648926f9351f4b860352a7d8a1f7abN.exe
Token: SeDebugPrivilege	876	updates.exe
Token: SeDebugPrivilege	1292	updates.exe

Suspicious use of WriteProcessMemory 25 IoCs

Processes:

bf07e9ac79ed258fa40f5c00e1b06e88a7648926f9351f4b860352a7d8a1f7abN.exebf07e9ac79ed258fa40f5c00e1b06e88a7648926f9351f4b860352a7d8a1f7abN.exeupdates.exeupdates.exe

description	pid	Process	procid_target
PID 4968 wrote to memory of 2200	4968	bf07e9ac79ed258fa40f5c00e1b06e88a7648926f9351f4b860352a7d8a1f7abN.exe	82
PID 4968 wrote to memory of 2200	4968	bf07e9ac79ed258fa40f5c00e1b06e88a7648926f9351f4b860352a7d8a1f7abN.exe	82
PID 4968 wrote to memory of 2200	4968	bf07e9ac79ed258fa40f5c00e1b06e88a7648926f9351f4b860352a7d8a1f7abN.exe	82
PID 4968 wrote to memory of 2200	4968	bf07e9ac79ed258fa40f5c00e1b06e88a7648926f9351f4b860352a7d8a1f7abN.exe	82
PID 4968 wrote to memory of 2200	4968	bf07e9ac79ed258fa40f5c00e1b06e88a7648926f9351f4b860352a7d8a1f7abN.exe	82
PID 4968 wrote to memory of 2200	4968	bf07e9ac79ed258fa40f5c00e1b06e88a7648926f9351f4b860352a7d8a1f7abN.exe	82
PID 4968 wrote to memory of 2200	4968	bf07e9ac79ed258fa40f5c00e1b06e88a7648926f9351f4b860352a7d8a1f7abN.exe	82
PID 4968 wrote to memory of 2200	4968	bf07e9ac79ed258fa40f5c00e1b06e88a7648926f9351f4b860352a7d8a1f7abN.exe	82
PID 2200 wrote to memory of 532	2200	bf07e9ac79ed258fa40f5c00e1b06e88a7648926f9351f4b860352a7d8a1f7abN.exe	86
PID 2200 wrote to memory of 532	2200	bf07e9ac79ed258fa40f5c00e1b06e88a7648926f9351f4b860352a7d8a1f7abN.exe	86
PID 2200 wrote to memory of 532	2200	bf07e9ac79ed258fa40f5c00e1b06e88a7648926f9351f4b860352a7d8a1f7abN.exe	86
PID 2200 wrote to memory of 876	2200	bf07e9ac79ed258fa40f5c00e1b06e88a7648926f9351f4b860352a7d8a1f7abN.exe	89
PID 2200 wrote to memory of 876	2200	bf07e9ac79ed258fa40f5c00e1b06e88a7648926f9351f4b860352a7d8a1f7abN.exe	89
PID 2200 wrote to memory of 876	2200	bf07e9ac79ed258fa40f5c00e1b06e88a7648926f9351f4b860352a7d8a1f7abN.exe	89
PID 876 wrote to memory of 1292	876	updates.exe	90
PID 876 wrote to memory of 1292	876	updates.exe	90
PID 876 wrote to memory of 1292	876	updates.exe	90
PID 876 wrote to memory of 1292	876	updates.exe	90
PID 876 wrote to memory of 1292	876	updates.exe	90
PID 876 wrote to memory of 1292	876	updates.exe	90
PID 876 wrote to memory of 1292	876	updates.exe	90
PID 876 wrote to memory of 1292	876	updates.exe	90
PID 1292 wrote to memory of 4228	1292	updates.exe	92
PID 1292 wrote to memory of 4228	1292	updates.exe	92
PID 1292 wrote to memory of 4228	1292	updates.exe	92

C:\Users\Admin\AppData\Local\Temp\bf07e9ac79ed258fa40f5c00e1b06e88a7648926f9351f4b860352a7d8a1f7abN.exe
"C:\Users\Admin\AppData\Local\Temp\bf07e9ac79ed258fa40f5c00e1b06e88a7648926f9351f4b860352a7d8a1f7abN.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4968
- C:\Users\Admin\AppData\Local\Temp\bf07e9ac79ed258fa40f5c00e1b06e88a7648926f9351f4b860352a7d8a1f7abN.exe
  C:\Users\Admin\AppData\Local\Temp\bf07e9ac79ed258fa40f5c00e1b06e88a7648926f9351f4b860352a7d8a1f7abN.exe
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2200
- - C:\Windows\SysWOW64\schtasks.exe
    "schtasks" /create /tn "Windows Update" /sc ONLOGON /tr "C:\Users\Admin\AppData\Local\Temp\bf07e9ac79ed258fa40f5c00e1b06e88a7648926f9351f4b860352a7d8a1f7abN.exe" /rl HIGHEST /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:532
- - C:\Users\Admin\AppData\Roaming\Windows\updates.exe
    "C:\Users\Admin\AppData\Roaming\Windows\updates.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:876
  - - C:\Users\Admin\AppData\Roaming\Windows\updates.exe
      C:\Users\Admin\AppData\Roaming\Windows\updates.exe
      4⤵
      Executes dropped EXE
      System Location Discovery: System Language Discovery
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of WriteProcessMemory
      PID:1292
    - - C:\Windows\SysWOW64\schtasks.exe
        
        "schtasks" /create /tn "Windows Update" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\Windows\updates.exe" /rl HIGHEST /f
        5⤵
        System Location Discovery: System Language Discovery
        Scheduled Task/Job: Scheduled Task
        
        PID:4228

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\Local\Microsoft\CLR_v4.0_32\UsageLogs\bf07e9ac79ed258fa40f5c00e1b06e88a7648926f9351f4b860352a7d8a1f7abN.exe.log

Filesize
706B

MD5
d95c58e609838928f0f49837cab7dfd2

SHA1
55e7139a1e3899195b92ed8771d1ca2c7d53c916

SHA256
0407c814aef0d62aec7fd39b7c2f614746f0d8ff41f8ef957736f520f14b0339

SHA512
405310b29a833604c6627063bfdcf055a197e01f633ef21da238f1a6415a02e21315d689b4a6669db23e82152bed6f3492afb60963e6b2a0e9bb2ac09a480b5d

Download Submit
C:\Users\Admin\AppData\Roaming\Windows\updates.exe

Filesize
876KB

MD5
96ada2b7d27c62da2635104a0b1d71d0

SHA1
8730396d2c4adcb2b2531ca207d3338604622f15

SHA256
bf07e9ac79ed258fa40f5c00e1b06e88a7648926f9351f4b860352a7d8a1f7ab

SHA512
1084cd57f87c6610897711f2107705d9fdfacb402a9ca4cf8624c04d00d6c04cbeb239b6945484387f22e500d8afcda090379bc25f659b0f0b9fd111422b4215

Download Submit
memory/876-29-0x0000000075340000-0x0000000075AF0000-memory.dmp

Filesize
7.7MB

Download
memory/876-24-0x0000000075340000-0x0000000075AF0000-memory.dmp

Filesize
7.7MB

Download
memory/876-22-0x0000000075340000-0x0000000075AF0000-memory.dmp

Filesize
7.7MB

Download
memory/1292-30-0x0000000006C30000-0x0000000006C3A000-memory.dmp

Filesize
40KB

Download
memory/2200-16-0x0000000006B30000-0x0000000006B6C000-memory.dmp

Filesize
240KB

Download
memory/2200-14-0x0000000005890000-0x00000000058F6000-memory.dmp

Filesize
408KB

Download
memory/2200-23-0x0000000075340000-0x0000000075AF0000-memory.dmp

Filesize
7.7MB

Download
memory/2200-9-0x0000000000400000-0x000000000045E000-memory.dmp

Filesize
376KB

Download
memory/2200-11-0x0000000075340000-0x0000000075AF0000-memory.dmp

Filesize
7.7MB

Download
memory/2200-15-0x00000000064B0000-0x00000000064C2000-memory.dmp

Filesize
72KB

Download
memory/2200-13-0x0000000075340000-0x0000000075AF0000-memory.dmp

Filesize
7.7MB

Download
memory/4968-12-0x0000000075340000-0x0000000075AF0000-memory.dmp

Filesize
7.7MB

Download
memory/4968-7-0x000000000A560000-0x000000000A5F2000-memory.dmp

Filesize
584KB

Download
memory/4968-0-0x000000007534E000-0x000000007534F000-memory.dmp

Filesize
4KB

Download
memory/4968-6-0x000000000AA70000-0x000000000B014000-memory.dmp

Filesize
5.6MB

Download
memory/4968-5-0x000000000A420000-0x000000000A4BC000-memory.dmp

Filesize
624KB

Download
memory/4968-4-0x000000000A280000-0x000000000A386000-memory.dmp

Filesize
1.0MB

Download
memory/4968-8-0x000000000A4C0000-0x000000000A4C6000-memory.dmp

Filesize
24KB

Download
memory/4968-3-0x0000000075340000-0x0000000075AF0000-memory.dmp

Filesize
7.7MB

Download
memory/4968-2-0x0000000004B00000-0x0000000004B06000-memory.dmp

Filesize
24KB

Download
memory/4968-1-0x0000000000230000-0x0000000000310000-memory.dmp

Filesize
896KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads