quasar | 98844e610a8d1e4800f8aee8d8464acc12d50f19c4025ffbf1759a899b5d66c4

Analysis

max time kernel
156s
max time network
179s
platform
windows10-2004_x64
resource
win10v2004-20231020-en
resource tags

arch:x64arch:x86image:win10v2004-20231020-enlocale:en-usos:windows10-2004-x64system
submitted
07/11/2023, 15:29

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target
qpmf76a7t6.ps1
Size 447KB
Sample231107-swwphsbb2y
SHA256 98844e610a8d1e4800f8aee8d8464acc12d50f19c4025ffbf1759a899b5d66c4
MD5 7700f9bf0e03d5be94bb8f40e136a3e8
SHA1 ed41d9d50c9e8bd4b8af304bb2b5ce6c64b9213b
SHA512 93a1f682d81e19a67c1859de69eac4ed04b24c25d4b9ef4f6693314b62b51d054adc3bad4f10acaeddfc36a4f71f09b91b47d5a00d0ad40f1bcf2da82e0b53f3
SSDEEP 6144:FKw5pDSIAk1n984AAEy+k7YL1e+S/Oi47ZzqJZp:FNp+IlnW4/tK1vS/Oi47ZmJZp
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

quasar dynu_ios spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.3.0.0

Botnet

Dynu_iOS

nathwood23.mysynology.net:6750

Mutex

QSR_MUTEX_OPHYkBqbgVa1hVncIL

Attributes

encryption_key
QzXTNaNU0qNKGByM57rH
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 payload 1 IoCs

resource	yara_rule
behavioral2/memory/1476-31-0x0000000000400000-0x000000000045E000-memory.dmp	family_quasar

Drops startup file 1 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\SystemAutoRunner.vbs	powershell.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
46	ip-api.com

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1808 set thread context of 1476	1808	powershell.exe	92

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
5008	PING.EXE

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1808	powershell.exe
1808	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1808	powershell.exe
Token: SeDebugPrivilege	1476	AppLaunch.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1476	AppLaunch.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 1808 wrote to memory of 3300	1808	powershell.exe	90
PID 1808 wrote to memory of 3300	1808	powershell.exe	90
PID 3300 wrote to memory of 3856	3300	csc.exe	91
PID 3300 wrote to memory of 3856	3300	csc.exe	91
PID 1808 wrote to memory of 1476	1808	powershell.exe	92
PID 1808 wrote to memory of 1476	1808	powershell.exe	92
PID 1808 wrote to memory of 1476	1808	powershell.exe	92
PID 1808 wrote to memory of 1476	1808	powershell.exe	92
PID 1808 wrote to memory of 1476	1808	powershell.exe	92
PID 1808 wrote to memory of 1476	1808	powershell.exe	92
PID 1808 wrote to memory of 1476	1808	powershell.exe	92
PID 1808 wrote to memory of 1476	1808	powershell.exe	92
PID 1476 wrote to memory of 3560	1476	AppLaunch.exe	106
PID 1476 wrote to memory of 3560	1476	AppLaunch.exe	106
PID 1476 wrote to memory of 3560	1476	AppLaunch.exe	106
PID 3560 wrote to memory of 864	3560	cmd.exe	108
PID 3560 wrote to memory of 864	3560	cmd.exe	108
PID 3560 wrote to memory of 864	3560	cmd.exe	108
PID 3560 wrote to memory of 5008	3560	cmd.exe	109
PID 3560 wrote to memory of 5008	3560	cmd.exe	109
PID 3560 wrote to memory of 5008	3560	cmd.exe	109

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
powershell.exe -ExecutionPolicy bypass -File C:\Users\Admin\AppData\Local\Temp\qpmf76a7t6.ps1
1⤵
- Drops startup file
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1808
- C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe
  "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe" /noconfig /fullpaths @"C:\Users\Admin\AppData\Local\Temp\sdu1odwa\sdu1odwa.cmdline"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3300
- - C:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exe
    C:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exe /NOLOGO /READONLY /MACHINE:IX86 "/OUT:C:\Users\Admin\AppData\Local\Temp\RES5501.tmp" "c:\Users\Admin\AppData\Local\Temp\sdu1odwa\CSCF02B90C9D1D047DA852DF2AF504FAA6C.TMP"
    3⤵
    PID:3856
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe"
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1476
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\kELpMmLiE3qF.bat" "
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:3560
  - - C:\Windows\SysWOW64\chcp.com
      chcp 65001
      4⤵
      PID:864
  - - C:\Windows\SysWOW64\PING.EXE
      ping -n 10 localhost
      4⤵
      Runs ping.exe
      PID:5008

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Remote System Discovery

T1018

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

RES5501.tmp

Path C:\Users\Admin\AppData\Local\Temp\RES5501.tmp
Size 1KB
SHA256 fb274cd72e743ca2b11a9e2d6a94f90ebe2ecd7e01944193a651d537fec0d93a
MD5 d2ef8c1941d61ce3eb8d4612887398e1
SHA1 b936bb38fc9129bb35ea9d31857ee70d98cf8c5b
SHA512 307408ffc46dacc8e2df8ba3fbefedad13ef31fac8f500d7cb5229f98dbb4e1470a0eba18e17002b1ee269be9829cd8a34a9e2580a0e95b7fb4f7e27b6304b64
MD5 SHA1 SHA512

Submit Download

__PSScriptPolicyTest_ai2zc30q.i24.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_ai2zc30q.i24.ps1
Size 60B
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
MD5 SHA1 SHA512

Submit Download

kELpMmLiE3qF.bat

Path C:\Users\Admin\AppData\Local\Temp\kELpMmLiE3qF.bat
Size 273B
SHA256 e9ed9f3e65e5799aa01b0b4baa1bc11e95c136c402f9765be705641539ac51eb
MD5 323454964a5c74b94f5adbb1576d290b
SHA1 04542a8f210f424977cfe1a116233645fdbcb223
SHA512 ccab01182e06be1798a7956daf96f0f744096e7dddf777d657ddf65ae88359b26a56f5600fdb662a90dad66f93e30c120805ef5105898a7c4bdef8a8ae1ee5b1
MD5 SHA1 SHA512

Submit Download

sdu1odwa.dll

Path C:\Users\Admin\AppData\Local\Temp\sdu1odwa\sdu1odwa.dll
Size 8KB
SHA256 bdf3d9ae27e0632a24e1fababfb4971e4df8d2775e41eebb54643eee9b7d819f
MD5 fc7b5746eb11c8cf716e4f726f54c164
SHA1 63d4d875c80d152d596c86b09264ce607b09bd25
SHA512 e7b372db3009138b11f5e2b675b5962eee27cc91ef9d7dfb7b6db891eae6c4a613942c7882b0d595121505ddf74dd0e79188a267a6b401933265fdc3bd6949cb
SSDEEP 96:OVEiCeHgJZota444uPHJPulDpSY3qdGsaOnXi5hSlzz5krcK:OSCgz444uPHJPu7SY3OGsa75hS9mZ
MD5 SHA1 SHA512 SSDEEP

Submit Download

11-07-~1

Path C:\Users\Admin\AppData\Roaming\Logs\11-07-~1
Size 224B
SHA256 b834f4fdf76e588d321ed49fa8a5b77a23feebc27d86f1d4517b9304fcde0071
MD5 5b09ccf412ace0822d0c5b89bd6627f9
SHA1 1fcc3ce27cb23327848b9421f2f8506ef48c35a1
SHA512 effe1400edf56043c7d931c90c7cde2dfd57f89cfa5c76a8d26211059ef8046b2151cf871255460a10839ba6d3f3b6cfd255f2b635903f1d02bd3fc41f47d3e1
MD5 SHA1 SHA512

Submit Download

CSCF02B90C9D1D047DA852DF2AF504FAA6C.TMP

Path \??\c:\Users\Admin\AppData\Local\Temp\sdu1odwa\CSCF02B90C9D1D047DA852DF2AF504FAA6C.TMP
Size 652B
SHA256 2c0fca8f408684c23e9cd111b2520f841c82500f8cd1f0c9ef2f13be8d531f35
MD5 c92cea771ac3ae1abb8a26d2db0a3918
SHA1 f5c5ce9cd05e4c266da12c11eeadb5d9d0bd2a21
SHA512 3cf36a7ac9d90fd0ad137a89b91ea2df0878091f8e2b92a774c2c830eed32ca30df7586b2a5fa25a8af8579733ad71aa594d77cbdfbd715deea6db980c70d792
MD5 SHA1 SHA512

Submit Download

sdu1odwa.0.cs

Path \??\c:\Users\Admin\AppData\Local\Temp\sdu1odwa\sdu1odwa.0.cs
Size 10KB
SHA256 27120c8ed3bd26c821ca413a54a6d5d536ada661eab1abe1c5255ae5a16a27ee
MD5 09035af4e642b0b7a269c87cfcac0ad9
SHA1 b7dc64c7523dcc3361ab7ae770460f8428a91e1a
SHA512 d1bb5ce5d7d74db101db7360c9b3ada3187c8d6d26456c959d68da45bf99130ac676a1b71eec4881cd045629ac371435ef9f4cac5430614b5f9b4067ef2604f7
SSDEEP 192:LJv3Czwwk0dENDD0jPslla/uFhdGhShNA/xxoeyt/B0dY3+cS:LJvKwcdENUMndMANewPJ0dYW
MD5 SHA1 SHA512 SSDEEP

Submit Download

sdu1odwa.cmdline

Path \??\c:\Users\Admin\AppData\Local\Temp\sdu1odwa\sdu1odwa.cmdline
Size 327B
SHA256 e750b68cd780f771de14fac408095d9ffd106fe5e634a069b798564d9a4aec38
MD5 ced7f9b024edbfbed017f16d6d4d038a
SHA1 5443ab78c5606880605f54dde1fd3f79a3290b1c
SHA512 ff275d8f3e28f262dce9c41e739137c7f4f19b7d894d137d7c13558f1d268ff1589fe50df1e64e321e5afeeae673465d441703830fe40f7c20f513283ff7617a
MD5 SHA1 SHA512

Submit Download

memory/1476-40-0x0000000005D10000-0x0000000005D22000-memory.dmp

Download

memory/1476-38-0x0000000004F00000-0x0000000004F10000-memory.dmp

Download

memory/1476-51-0x0000000074D70000-0x0000000075520000-memory.dmp

Download

memory/1476-45-0x0000000004F00000-0x0000000004F10000-memory.dmp

Download

memory/1476-44-0x00000000064E0000-0x00000000064EA000-memory.dmp

Download

memory/1476-42-0x0000000074D70000-0x0000000075520000-memory.dmp

Download

memory/1476-31-0x0000000000400000-0x000000000045E000-memory.dmp

Download

memory/1476-41-0x0000000006150000-0x000000000618C000-memory.dmp

Download

memory/1476-35-0x0000000074D70000-0x0000000075520000-memory.dmp

Download

memory/1476-36-0x0000000005370000-0x0000000005914000-memory.dmp

Download

memory/1476-37-0x0000000004F10000-0x0000000004FA2000-memory.dmp

Download

memory/1476-39-0x00000000050B0000-0x0000000005116000-memory.dmp

Download

memory/1808-15-0x00000291F7290000-0x00000291F72A0000-memory.dmp

Download

memory/1808-11-0x00007FF8DBCC0000-0x00007FF8DC781000-memory.dmp

Download

memory/1808-34-0x00007FF8DBCC0000-0x00007FF8DC781000-memory.dmp

Download

memory/1808-13-0x00000291F8650000-0x00000291F8B78000-memory.dmp

Download

memory/1808-29-0x00000291F6DA0000-0x00000291F6DA8000-memory.dmp

Download

memory/1808-14-0x00000291F7290000-0x00000291F72A0000-memory.dmp

Download

memory/1808-10-0x00000291F7F40000-0x00000291F7FB6000-memory.dmp

Download

memory/1808-12-0x00000291F7290000-0x00000291F72A0000-memory.dmp

Download

memory/1808-9-0x00000291F7C50000-0x00000291F7C72000-memory.dmp

Download