quasar | 0ad767569575baeeba2c76169fe9389b805364dd3a71e5e8d818dea5a94acc50

Analysis

max time kernel
130s
max time network
146s
platform
windows10-2004_x64
resource
win10v2004-20240419-en
resource tags

arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
submitted
30/04/2024, 03:41

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General

Target
Pogingenc.exe
Size 6.0MB
Sample240430-d89pksbd46
SHA256 0ad767569575baeeba2c76169fe9389b805364dd3a71e5e8d818dea5a94acc50
MD5 4d05ea664b21ab95e888f456afa1a7a8
SHA1 b4ddeb5b9c83cd8ff02004f52751d1298212a37c
SHA512 05825d447257267ab9079f15f31565dc7bf88dc6293ccf9ca93bee67a63ef1a68ee29b5a54d33336a4864e326b90239fc34b13831e1243b1390a96f5214aad20
SSDEEP 98304:aBDvEtGdg2pgJTJSCYLCWcpc2tlbWvKUeR+T8u0:aBDt9gJTXYGWcRtlivOA
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

quasar office04 spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

93.123.85.108:4782

Mutex

e14b8f59-979b-4ebf-8602-dd3c4d6c301e

Attributes

encryption_key
534734397C0FA9A1D28F061AD75DF4100BFF5787
install_name
Msconfig.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/5052-6-0x0000000000790000-0x0000000000AB4000-memory.dmp	family_quasar

Executes dropped EXE 2 IoCs

pid	Process
1512	mstools.exe
392	mstools.exe

Uses the VBS compiler for execution 1 TTPs

Scripting
T1064

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 4640 set thread context of 5052	4640	Pogingenc.exe	91
PID 1512 set thread context of 1940	1512	mstools.exe	107

Creates scheduled task(s) 1 TTPs 2 IoCs

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

persistence

Scheduled Task/Job

T1053

pid	Process
3956	schtasks.exe
1840	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	5052	vbc.exe
Token: SeDebugPrivilege	1940	vbc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
5052	vbc.exe

Suspicious use of WriteProcessMemory 40 IoCs

description	pid	Process	procid_target
PID 4640 wrote to memory of 5052	4640	Pogingenc.exe	91
PID 4640 wrote to memory of 5052	4640	Pogingenc.exe	91
PID 4640 wrote to memory of 5052	4640	Pogingenc.exe	91
PID 4640 wrote to memory of 5052	4640	Pogingenc.exe	91
PID 4640 wrote to memory of 5052	4640	Pogingenc.exe	91
PID 4640 wrote to memory of 5052	4640	Pogingenc.exe	91
PID 4640 wrote to memory of 5052	4640	Pogingenc.exe	91
PID 4640 wrote to memory of 5052	4640	Pogingenc.exe	91
PID 4640 wrote to memory of 2740	4640	Pogingenc.exe	92
PID 4640 wrote to memory of 2740	4640	Pogingenc.exe	92
PID 4640 wrote to memory of 2740	4640	Pogingenc.exe	92
PID 4640 wrote to memory of 3096	4640	Pogingenc.exe	94
PID 4640 wrote to memory of 3096	4640	Pogingenc.exe	94
PID 4640 wrote to memory of 3096	4640	Pogingenc.exe	94
PID 3096 wrote to memory of 3956	3096	cmd.exe	96
PID 3096 wrote to memory of 3956	3096	cmd.exe	96
PID 3096 wrote to memory of 3956	3096	cmd.exe	96
PID 4640 wrote to memory of 2348	4640	Pogingenc.exe	97
PID 4640 wrote to memory of 2348	4640	Pogingenc.exe	97
PID 4640 wrote to memory of 2348	4640	Pogingenc.exe	97
PID 1512 wrote to memory of 1940	1512	mstools.exe	107
PID 1512 wrote to memory of 1940	1512	mstools.exe	107
PID 1512 wrote to memory of 1940	1512	mstools.exe	107
PID 1512 wrote to memory of 1940	1512	mstools.exe	107
PID 1512 wrote to memory of 1940	1512	mstools.exe	107
PID 1512 wrote to memory of 1940	1512	mstools.exe	107
PID 1512 wrote to memory of 1940	1512	mstools.exe	107
PID 1512 wrote to memory of 1940	1512	mstools.exe	107
PID 1512 wrote to memory of 872	1512	mstools.exe	108
PID 1512 wrote to memory of 872	1512	mstools.exe	108
PID 1512 wrote to memory of 872	1512	mstools.exe	108
PID 1512 wrote to memory of 2784	1512	mstools.exe	110
PID 1512 wrote to memory of 2784	1512	mstools.exe	110
PID 1512 wrote to memory of 2784	1512	mstools.exe	110
PID 2784 wrote to memory of 1840	2784	cmd.exe	112
PID 2784 wrote to memory of 1840	2784	cmd.exe	112
PID 2784 wrote to memory of 1840	2784	cmd.exe	112
PID 1512 wrote to memory of 1616	1512	mstools.exe	113
PID 1512 wrote to memory of 1616	1512	mstools.exe	113
PID 1512 wrote to memory of 1616	1512	mstools.exe	113

C:\Users\Admin\AppData\Local\Temp\Pogingenc.exe
"C:\Users\Admin\AppData\Local\Temp\Pogingenc.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4640
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:5052
- C:\Windows\SysWOW64\cmd.exe
  "cmd.exe" /C mkdir "C:\Users\Admin\AppData\Local\Temp\mstools"
  2⤵
  PID:2740
- C:\Windows\SysWOW64\cmd.exe
  "cmd.exe" /C schtasks /create /sc minute /mo 1 /tn "Nafifas" /tr "'C:\Users\Admin\AppData\Local\Temp\mstools\mstools.exe'" /f
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3096
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /sc minute /mo 1 /tn "Nafifas" /tr "'C:\Users\Admin\AppData\Local\Temp\mstools\mstools.exe'" /f
    3⤵
    - Creates scheduled task(s)
    PID:3956
- C:\Windows\SysWOW64\cmd.exe
  "cmd.exe" /C copy "C:\Users\Admin\AppData\Local\Temp\Pogingenc.exe" "C:\Users\Admin\AppData\Local\Temp\mstools\mstools.exe"
  2⤵
  PID:2348

C:\Users\Admin\AppData\Local\Temp\mstools\mstools.exe
C:\Users\Admin\AppData\Local\Temp\mstools\mstools.exe
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1512
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1940
- C:\Windows\SysWOW64\cmd.exe
  "cmd.exe" /C mkdir "C:\Users\Admin\AppData\Local\Temp\mstools"
  2⤵
  PID:872
- C:\Windows\SysWOW64\cmd.exe
  "cmd.exe" /C schtasks /create /sc minute /mo 1 /tn "Nafifas" /tr "'C:\Users\Admin\AppData\Local\Temp\mstools\mstools.exe'" /f
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2784
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /sc minute /mo 1 /tn "Nafifas" /tr "'C:\Users\Admin\AppData\Local\Temp\mstools\mstools.exe'" /f
    3⤵
    - Creates scheduled task(s)
    PID:1840
- C:\Windows\SysWOW64\cmd.exe
  "cmd.exe" /C copy "C:\Users\Admin\AppData\Local\Temp\mstools\mstools.exe" "C:\Users\Admin\AppData\Local\Temp\mstools\mstools.exe"
  2⤵
  PID:1616

C:\Users\Admin\AppData\Local\Temp\mstools\mstools.exe
C:\Users\Admin\AppData\Local\Temp\mstools\mstools.exe
1⤵
- Executes dropped EXE
PID:392

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Scripting

T1064

Persistence

Scheduled Task/Job

T1053

Privilege Escalation

Scheduled Task/Job

T1053

Defense Evasion

Scripting

T1064

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

mstools.exe.log

Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\mstools.exe.log
Size 520B
SHA256 5164770a37b199a79ccd23b399bb3309228973d9f74c589bc2623dc613b37ac4
MD5 03febbff58da1d3318c31657d89c8542
SHA1 c9e017bd9d0a4fe533795b227c855935d86c2092
SHA512 3750c372bbca1892e9c1b34681d592c693e725a8b149c3d6938079cd467628cec42c4293b0d886b57a786abf45f5e7229247b3445001774e3e793ff5a3accfa3
MD5 SHA1 SHA512

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mstools.exe

Path C:\Users\Admin\AppData\Local\Temp\mstools\mstools.exe
Size 6.0MB
SHA256 0ad767569575baeeba2c76169fe9389b805364dd3a71e5e8d818dea5a94acc50
MD5 4d05ea664b21ab95e888f456afa1a7a8
SHA1 b4ddeb5b9c83cd8ff02004f52751d1298212a37c
SHA512 05825d447257267ab9079f15f31565dc7bf88dc6293ccf9ca93bee67a63ef1a68ee29b5a54d33336a4864e326b90239fc34b13831e1243b1390a96f5214aad20
SSDEEP 98304:aBDvEtGdg2pgJTJSCYLCWcpc2tlbWvKUeR+T8u0:aBDt9gJTXYGWcRtlivOA
MD5 SHA1 SHA512 SSDEEP

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memory/4640-0-0x0000000000670000-0x000000000099C000-memory.dmp

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memory/4640-1-0x00000000749A0000-0x0000000075150000-memory.dmp

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memory/4640-2-0x0000000005400000-0x0000000005410000-memory.dmp

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memory/4640-3-0x00000000059C0000-0x0000000005F64000-memory.dmp

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memory/4640-4-0x00000000749A0000-0x0000000075150000-memory.dmp

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memory/4640-14-0x00000000749A0000-0x0000000075150000-memory.dmp

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memory/5052-9-0x0000000005350000-0x0000000005360000-memory.dmp

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memory/5052-8-0x0000000005280000-0x0000000005312000-memory.dmp

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memory/5052-13-0x0000000005330000-0x000000000533A000-memory.dmp

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memory/5052-15-0x0000000006300000-0x0000000006918000-memory.dmp

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memory/5052-16-0x0000000005E60000-0x0000000005EB0000-memory.dmp

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memory/5052-17-0x00000000060D0000-0x0000000006182000-memory.dmp

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memory/5052-18-0x00000000749A0000-0x0000000075150000-memory.dmp

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memory/5052-19-0x0000000005350000-0x0000000005360000-memory.dmp

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memory/5052-7-0x00000000749A0000-0x0000000075150000-memory.dmp

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memory/5052-6-0x0000000000790000-0x0000000000AB4000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads