quasar | 677b56921e0ac313d88a476865bcdfbc59ae7b941a4f31ee98cff34b5b47c67a

General

Target

loli.exe
Size

3.1MB
MD5

fc04e19e18532ba031bd6e05fad571b1
SHA1

d124d44ac3afc724c4cfa84af182af347b430cfa
SHA256

677b56921e0ac313d88a476865bcdfbc59ae7b941a4f31ee98cff34b5b47c67a
SHA512

f0c11c3c79dbfaae2a7cd18335dfc2b55477b7b5cc7750f31f7817cbb71f405bb8a7a6b09d246e29e2b21f5568467241fb9fc7661ed207a914c0ed77c887e9dc
SSDEEP

49152:XvkG42pda6D+/PjlLOlg6yQipVlZyg+vEPTHHB72eh2NT:XvP42pda6D+/PjlLOlZyQipVlZR

Score

10^/10

quasar slave discovery spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Slave

C2

manufacturer-iran.gl.at.ply.gg:46957

manufacturer-iran.gl.at.ply.gg:5047

Mutex

261b229e-a9e0-46eb-b59b-76313ea213fe

Attributes

encryption_key
F7ACA224CAA318E1652BB3825C87CAD85F986692
install_name
Client.exe
log_directory
Logs
reconnect_delay
3000
startup_key
Update
subdirectory
SubDir

Signatures

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

Quasar payload 2 IoCs

resource	yara_rule
behavioral2/memory/4984-1-0x0000000000360000-0x000000000067A000-memory.dmp	family_quasar
behavioral2/files/0x0007000000023638-6.dat	family_quasar

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2170637797-568393320-3232933035-1000\Control Panel\International\Geo\Nation	Client.exe

Executes dropped EXE 1 IoCs

pid	Process
2312	Client.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 1 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
2844	PING.EXE

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2844	PING.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
1196	schtasks.exe
884	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4984	loli.exe
Token: SeDebugPrivilege	2312	Client.exe

Suspicious use of FindShellTrayWindow 4 IoCs

pid	Process
2312	Client.exe
2312	Client.exe
2312	Client.exe
2312	Client.exe

Suspicious use of SendNotifyMessage 4 IoCs

pid	Process
2312	Client.exe
2312	Client.exe
2312	Client.exe
2312	Client.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2312	Client.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 4984 wrote to memory of 1196	4984	loli.exe	93
PID 4984 wrote to memory of 1196	4984	loli.exe	93
PID 4984 wrote to memory of 2312	4984	loli.exe	95
PID 4984 wrote to memory of 2312	4984	loli.exe	95
PID 2312 wrote to memory of 884	2312	Client.exe	98
PID 2312 wrote to memory of 884	2312	Client.exe	98
PID 2312 wrote to memory of 1148	2312	Client.exe	109
PID 2312 wrote to memory of 1148	2312	Client.exe	109
PID 2312 wrote to memory of 1680	2312	Client.exe	111
PID 2312 wrote to memory of 1680	2312	Client.exe	111
PID 1680 wrote to memory of 4984	1680	cmd.exe	113
PID 1680 wrote to memory of 4984	1680	cmd.exe	113
PID 1680 wrote to memory of 2844	1680	cmd.exe	114
PID 1680 wrote to memory of 2844	1680	cmd.exe	114

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Users\Admin\AppData\Local\Temp\loli.exe
"C:\Users\Admin\AppData\Local\Temp\loli.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4984
- C:\Windows\SYSTEM32\schtasks.exe
  "schtasks" /create /tn "Update" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:1196
- C:\Users\Admin\AppData\Roaming\SubDir\Client.exe
  "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2312
- - C:\Windows\SYSTEM32\schtasks.exe
    "schtasks" /create /tn "Update" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:884
- - C:\Windows\SYSTEM32\schtasks.exe
    "schtasks" /delete /tn "Update" /f
    3⤵
    PID:1148
- - C:\Windows\system32\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\GmF1GqKkpLMP.bat" "
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1680
  - - C:\Windows\system32\chcp.com
      chcp 65001
      4⤵
      PID:4984
  - - C:\Windows\system32\PING.EXE
      ping -n 10 localhost
      4⤵
      System Network Configuration Discovery: Internet Connection Discovery
      Runs ping.exe
      PID:2844

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=4396,i,6510295916244954942,10164894160290787457,262144 --variations-seed-version --mojo-platform-channel-handle=4400 /prefetch:8
1⤵
PID:2116

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

Query Registry

2

T1012

Remote System Discovery

1

T1018

System Information Discovery

2

T1082

System Network Configuration Discovery

1

T1016

Internet Connection Discovery

1

T1016.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\GmF1GqKkpLMP.bat

Filesize
211B

MD5
315896fdbb1591fa5471e89ed8a61e0e

SHA1
2c96e0ac8812c49c4234196d9b993065d4974ddc

SHA256
96a8adf6897b07d3fe3da01edde814111e363ab9352fe9526cbdd81fb0d7d9f1

SHA512
006b5e7760e167eb4afbd75780058a3a6499b02f8dda8d343ccc227c4f97bf0679403e4fa50a80f42b1ebd03d8663d6e3e0e2d9da868ceb8654bcf58b467606b

Download Submit
C:\Users\Admin\AppData\Roaming\SubDir\Client.exe

Filesize
3.1MB

MD5
fc04e19e18532ba031bd6e05fad571b1

SHA1
d124d44ac3afc724c4cfa84af182af347b430cfa

SHA256
677b56921e0ac313d88a476865bcdfbc59ae7b941a4f31ee98cff34b5b47c67a

SHA512
f0c11c3c79dbfaae2a7cd18335dfc2b55477b7b5cc7750f31f7817cbb71f405bb8a7a6b09d246e29e2b21f5568467241fb9fc7661ed207a914c0ed77c887e9dc

Download Submit
memory/2312-11-0x00007FF9CDF80000-0x00007FF9CEA41000-memory.dmp

Filesize
10.8MB

Download
memory/2312-10-0x00007FF9CDF80000-0x00007FF9CEA41000-memory.dmp

Filesize
10.8MB

Download
memory/2312-12-0x000000001BD20000-0x000000001BD70000-memory.dmp

Filesize
320KB

Download
memory/2312-13-0x000000001BE30000-0x000000001BEE2000-memory.dmp

Filesize
712KB

Download
memory/2312-16-0x000000001BDB0000-0x000000001BDC2000-memory.dmp

Filesize
72KB

Download
memory/2312-17-0x000000001CA30000-0x000000001CA6C000-memory.dmp

Filesize
240KB

Download
memory/2312-18-0x00007FF9CDF80000-0x00007FF9CEA41000-memory.dmp

Filesize
10.8MB

Download
memory/2312-19-0x00007FF9CDF80000-0x00007FF9CEA41000-memory.dmp

Filesize
10.8MB

Download
memory/2312-24-0x00007FF9CDF80000-0x00007FF9CEA41000-memory.dmp

Filesize
10.8MB

Download
memory/4984-2-0x00007FF9CDF80000-0x00007FF9CEA41000-memory.dmp

Filesize
10.8MB

Download
memory/4984-9-0x00007FF9CDF80000-0x00007FF9CEA41000-memory.dmp

Filesize
10.8MB

Download
memory/4984-0-0x00007FF9CDF83000-0x00007FF9CDF85000-memory.dmp

Filesize
8KB

Download
memory/4984-1-0x0000000000360000-0x000000000067A000-memory.dmp

Filesize
3.1MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads