quasar | 0ad767569575baeeba2c76169fe9389b805364dd3a71e5e8d818dea5a94acc50

Analysis

max time kernel
132s
max time network
139s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
01/05/2024, 09:42

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General

Target
Pogingenc.exe
Size 6.0MB
Sample240501-lpen4aeb33
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/3672-6-0x0000000000400000-0x0000000000724000-memory.dmp	family_quasar

Executes dropped EXE 2 IoCs

pid	Process
1416	mstools.exe
4632	mstools.exe

Uses the VBS compiler for execution 1 TTPs

Scripting
T1064

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 3768 set thread context of 3672	3768	Pogingenc.exe	86
PID 1416 set thread context of 1184	1416	mstools.exe	96
PID 4632 set thread context of 312	4632	mstools.exe	105

Creates scheduled task(s) 1 TTPs 3 IoCs

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

persistence

Scheduled Task/Job

T1053

pid	Process
772	schtasks.exe
4072	schtasks.exe
1012	schtasks.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	3672	vbc.exe
Token: SeDebugPrivilege	1184	vbc.exe
Token: SeDebugPrivilege	312	vbc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3672	vbc.exe

Suspicious use of WriteProcessMemory 60 IoCs

description	pid	Process	procid_target
PID 3768 wrote to memory of 3672	3768	Pogingenc.exe	86
PID 3768 wrote to memory of 3672	3768	Pogingenc.exe	86
PID 3768 wrote to memory of 3672	3768	Pogingenc.exe	86
PID 3768 wrote to memory of 3672	3768	Pogingenc.exe	86
PID 3768 wrote to memory of 3672	3768	Pogingenc.exe	86
PID 3768 wrote to memory of 3672	3768	Pogingenc.exe	86
PID 3768 wrote to memory of 3672	3768	Pogingenc.exe	86
PID 3768 wrote to memory of 3672	3768	Pogingenc.exe	86
PID 3768 wrote to memory of 3064	3768	Pogingenc.exe	87
PID 3768 wrote to memory of 3064	3768	Pogingenc.exe	87
PID 3768 wrote to memory of 3064	3768	Pogingenc.exe	87
PID 3768 wrote to memory of 5012	3768	Pogingenc.exe	89
PID 3768 wrote to memory of 5012	3768	Pogingenc.exe	89
PID 3768 wrote to memory of 5012	3768	Pogingenc.exe	89
PID 5012 wrote to memory of 772	5012	cmd.exe	91
PID 5012 wrote to memory of 772	5012	cmd.exe	91
PID 5012 wrote to memory of 772	5012	cmd.exe	91
PID 3768 wrote to memory of 3324	3768	Pogingenc.exe	92
PID 3768 wrote to memory of 3324	3768	Pogingenc.exe	92
PID 3768 wrote to memory of 3324	3768	Pogingenc.exe	92
PID 1416 wrote to memory of 1184	1416	mstools.exe	96
PID 1416 wrote to memory of 1184	1416	mstools.exe	96
PID 1416 wrote to memory of 1184	1416	mstools.exe	96
PID 1416 wrote to memory of 1184	1416	mstools.exe	96
PID 1416 wrote to memory of 1184	1416	mstools.exe	96
PID 1416 wrote to memory of 1184	1416	mstools.exe	96
PID 1416 wrote to memory of 1184	1416	mstools.exe	96
PID 1416 wrote to memory of 1184	1416	mstools.exe	96
PID 1416 wrote to memory of 2640	1416	mstools.exe	97
PID 1416 wrote to memory of 2640	1416	mstools.exe	97
PID 1416 wrote to memory of 2640	1416	mstools.exe	97
PID 1416 wrote to memory of 4608	1416	mstools.exe	99
PID 1416 wrote to memory of 4608	1416	mstools.exe	99
PID 1416 wrote to memory of 4608	1416	mstools.exe	99
PID 4608 wrote to memory of 4072	4608	cmd.exe	101
PID 4608 wrote to memory of 4072	4608	cmd.exe	101
PID 4608 wrote to memory of 4072	4608	cmd.exe	101
PID 1416 wrote to memory of 4812	1416	mstools.exe	102
PID 1416 wrote to memory of 4812	1416	mstools.exe	102
PID 1416 wrote to memory of 4812	1416	mstools.exe	102
PID 4632 wrote to memory of 312	4632	mstools.exe	105
PID 4632 wrote to memory of 312	4632	mstools.exe	105
PID 4632 wrote to memory of 312	4632	mstools.exe	105
PID 4632 wrote to memory of 312	4632	mstools.exe	105
PID 4632 wrote to memory of 312	4632	mstools.exe	105
PID 4632 wrote to memory of 312	4632	mstools.exe	105
PID 4632 wrote to memory of 312	4632	mstools.exe	105
PID 4632 wrote to memory of 312	4632	mstools.exe	105
PID 4632 wrote to memory of 4960	4632	mstools.exe	106
PID 4632 wrote to memory of 4960	4632	mstools.exe	106
PID 4632 wrote to memory of 4960	4632	mstools.exe	106
PID 4632 wrote to memory of 3428	4632	mstools.exe	108
PID 4632 wrote to memory of 3428	4632	mstools.exe	108
PID 4632 wrote to memory of 3428	4632	mstools.exe	108
PID 3428 wrote to memory of 1012	3428	cmd.exe	110
PID 3428 wrote to memory of 1012	3428	cmd.exe	110
PID 3428 wrote to memory of 1012	3428	cmd.exe	110
PID 4632 wrote to memory of 3320	4632	mstools.exe	111
PID 4632 wrote to memory of 3320	4632	mstools.exe	111
PID 4632 wrote to memory of 3320	4632	mstools.exe	111

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:3768
- 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:3672
- C:\Windows\SysWOW64\cmd.exe
  "cmd.exe" /C mkdir "C:\Users\Admin\AppData\Local\Temp\mstools"
  2⤵
  PID:3064
- 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:5012
- - 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:772
- 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:3324

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:1416
- 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:1184
- C:\Windows\SysWOW64\cmd.exe
  "cmd.exe" /C mkdir "C:\Users\Admin\AppData\Local\Temp\mstools"
  2⤵
  PID:2640
- 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:4608
- - 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:4072
- 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:4812

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:4632
- 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:312
- C:\Windows\SysWOW64\cmd.exe
  "cmd.exe" /C mkdir "C:\Users\Admin\AppData\Local\Temp\mstools"
  2⤵
  PID:4960
- 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:3428
- - 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:1012
- 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:3320

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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vbc.exe.log

Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\vbc.exe.log
Size 1KB
SHA256 8940500d6f057583903fde1af0287e27197410415639fc69beb39475fa5240dc
MD5 df27a876383bd81dfbcb457a9fa9f09d
SHA1 1bbc4ab95c89d02ec1d217f0255205787999164e
SHA512 fe68271375002cfcf8585c92b948ae47cd1632919c43db4bc738e2bc85ceea6dd30880dba27df9c3317531f1017624d4bd8979e6c5fad58112c7aa1189f0b844
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/3672-8-0x0000000005830000-0x00000000058C2000-memory.dmp

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memory/3672-23-0x0000000074A10000-0x00000000751C0000-memory.dmp

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memory/3672-24-0x00000000058F0000-0x0000000005900000-memory.dmp

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memory/3672-6-0x0000000000400000-0x0000000000724000-memory.dmp

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memory/3672-7-0x0000000074A10000-0x00000000751C0000-memory.dmp

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memory/3672-19-0x0000000007A10000-0x0000000007A4C000-memory.dmp

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memory/3672-9-0x00000000058F0000-0x0000000005900000-memory.dmp

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memory/3672-20-0x0000000007AC0000-0x0000000007B26000-memory.dmp

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memory/3672-14-0x00000000058D0000-0x00000000058DA000-memory.dmp

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memory/3672-15-0x0000000006910000-0x0000000006F28000-memory.dmp

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memory/3672-16-0x0000000006400000-0x0000000006450000-memory.dmp

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memory/3672-17-0x0000000006670000-0x0000000006722000-memory.dmp

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memory/3672-18-0x00000000079B0000-0x00000000079C2000-memory.dmp

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memory/3768-5-0x0000000005AA0000-0x0000000005AB0000-memory.dmp

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memory/3768-13-0x0000000074A10000-0x00000000751C0000-memory.dmp

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memory/3768-1-0x0000000074A10000-0x00000000751C0000-memory.dmp

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memory/3768-4-0x0000000074A10000-0x00000000751C0000-memory.dmp

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memory/3768-3-0x0000000006060000-0x0000000006604000-memory.dmp

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memory/3768-2-0x0000000005AA0000-0x0000000005AB0000-memory.dmp

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memory/3768-0-0x0000000000D60000-0x000000000108C000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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