quasar | af12a0fe7ac38dc5fe35e9bc07e2c4e94b52fb895fde35991f77477519991562

Analysis

max time kernel
146s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
19-12-2024 11:15

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General

Target

truepepe-qt.exe
Size

85.2MB
MD5

157a22896cc610d6310a2fa0f4a13005
SHA1

5e62076cad33e22d62413264113627114cbc8887
SHA256

af12a0fe7ac38dc5fe35e9bc07e2c4e94b52fb895fde35991f77477519991562
SHA512

1eba39a21c01950a12e78582e99253a48b3984564c4826890a577b849abfde20f3012eeea4a0c972f94faa153ba6aef90af57b8d0762b0920cf6a940ccd86b75
SSDEEP

393216:34TPZVLWruiFVks+9j54GXvitZQLCO5SXDqQu58EISEhoIaE2FShABZDv25PPa25:3KRVQxhu0P8Lq1LEvxOOx5Sv

Score

10^/10

quasar senshipepe defense_evasion execution spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

SenshiPepe

51.15.17.193:4782

Mutex

3cedc6f6-6ab5-4aba-8d7d-5cda1b7ffa72

Attributes

encryption_key
97599F6E5D14A784CC4DD36B18A277119042FDA8
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 family
quasar

Quasar payload 1 IoCs

resource	yara_rule
behavioral2/memory/5036-39-0x000001EC39830000-0x000001EC39B54000-memory.dmp	family_quasar

System Binary Proxy Execution: Regsvcs/Regasm 1 TTPs 2 IoCs

Abuse Regasm to proxy execution of malicious code.

defense_evasion

Regsvcs/Regasm

T1218.009

description	ioc	Process
File created	C:\Users\Admin\AppData\Local\Temp\RegAsm.exe	truepepe-qt.exe
Key opened	\Registry\Machine\Software\Microsoft\Windows NT\CurrentVersion\AppCompatFlags\Custom\RegAsm.exe	cmd.exe

Drops startup file 1 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\tempup.url	truepepe-qt.exe

Executes dropped EXE 1 IoCs

pid	Process
5036	RegAsm.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
1080	powershell.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1080	powershell.exe
1080	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1080	powershell.exe
Token: SeDebugPrivilege	5036	RegAsm.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 3932 wrote to memory of 220	3932	truepepe-qt.exe	83
PID 3932 wrote to memory of 220	3932	truepepe-qt.exe	83
PID 220 wrote to memory of 4652	220	cmd.exe	84
PID 220 wrote to memory of 4652	220	cmd.exe	84
PID 220 wrote to memory of 1080	220	cmd.exe	85
PID 220 wrote to memory of 1080	220	cmd.exe	85
PID 1080 wrote to memory of 1820	1080	powershell.exe	86
PID 1080 wrote to memory of 1820	1080	powershell.exe	86
PID 1820 wrote to memory of 2812	1820	csc.exe	87
PID 1820 wrote to memory of 2812	1820	csc.exe	87
PID 3932 wrote to memory of 2932	3932	truepepe-qt.exe	88
PID 3932 wrote to memory of 2932	3932	truepepe-qt.exe	88
PID 2932 wrote to memory of 5036	2932	cmd.exe	89
PID 2932 wrote to memory of 5036	2932	cmd.exe	89
PID 3932 wrote to memory of 2984	3932	truepepe-qt.exe	90
PID 3932 wrote to memory of 2984	3932	truepepe-qt.exe	90

C:\Users\Admin\AppData\Local\Temp\truepepe-qt.exe
"C:\Users\Admin\AppData\Local\Temp\truepepe-qt.exe"
1⤵
- System Binary Proxy Execution: Regsvcs/Regasm
- Drops startup file
- Suspicious use of WriteProcessMemory
PID:3932
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /d /s /c "type C:\Users\Admin\AppData\Local\Temp\temp.ps1 | powershell.exe -noprofile -"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:220
- - C:\Windows\system32\cmd.exe
    C:\Windows\system32\cmd.exe /S /D /c" type C:\Users\Admin\AppData\Local\Temp\temp.ps1 "
    3⤵
    PID:4652
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    powershell.exe -noprofile -
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:1080
  - - 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\0hmbn0lb\0hmbn0lb.cmdline"
      4⤵
      Suspicious use of WriteProcessMemory
      PID:1820
    - - 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\RESBBDE.tmp" "c:\Users\Admin\AppData\Local\Temp\0hmbn0lb\CSC3B82DDB6E4E4D7CB7B28E8E23CABF.TMP"
        5⤵
        
        PID:2812
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /d /s /c "C:\Users\Admin\AppData\Local\Temp\RegAsm.exe"
  2⤵
  - System Binary Proxy Execution: Regsvcs/Regasm
  - Suspicious use of WriteProcessMemory
  PID:2932
- - C:\Users\Admin\AppData\Local\Temp\RegAsm.exe
    C:\Users\Admin\AppData\Local\Temp\RegAsm.exe
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    PID:5036
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /d /s /c "C:\Users\Admin\AppData\Local\Temp\TruePepe.exe"
  2⤵
  PID:2984

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Persistence

Privilege Escalation

Defense Evasion

System Binary Proxy Execution

T1218

Regsvcs/Regasm

T1218.009

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\0hmbn0lb\0hmbn0lb.dll

Filesize
3KB

MD5
daf9f45d1e8e1f0fd406ffd288cbf3da

SHA1
ebea39b84f711bd3e7e18fdeeff807a3946c68a7

SHA256
2ad68978f93c6740f3c2a0706f9bcc2c5116420ef14c907196b6fdcc152b5daf

SHA512
c691f12f505cdef58b44f5ceb807f199ee02e328cb05c5c004543bfe87adec03f88bf558f7325d9e514ecd11506bd4091d05cf98a0203bda8b25a7a9083b76ae

Download Submit
C:\Users\Admin\AppData\Local\Temp\RESBBDE.tmp

Filesize
1KB

MD5
b91fc7a87608fcb9bf21e63244163138

SHA1
16ac4c985493cb0f9d4e6d6cf985431629090e87

SHA256
7b8eb3172cc5c65448fe133ec9bf08defae1aaa167074506efda4ffce5934556

SHA512
2e903322af2a5647d920ff9848936430445003c403419564751e7ec72693db7a0be53b0c0b58c2401d763dd437cb1c8594df0e95e5567fbb921eb38635455578

Download Submit
C:\Users\Admin\AppData\Local\Temp\RegAsm.exe

Filesize
5.5MB

MD5
68ca89f542a3e864fe99e2391b178e22

SHA1
0ee003ff3b991f0c18e6b3d00f5e7f146ad2b746

SHA256
8b2c157588514f8e5210a12c54e5e723cc3d92b0c5b7a30e8343aec6d33837d8

SHA512
c411060d308d6294687e8590f303e9b2401f881410ff6051cb5d38ade8522ec99975bd8f123705c441021c6932dc2e95a0393e15b44254a738ebfbad8882997a

Download Submit
C:\Users\Admin\AppData\Local\Temp\TruePepe.exe

Filesize
4KB

MD5
b649bb4bbcec6444434d2df7501effb6

SHA1
f8a04ac654e2234fa2644abf8e293d02bc01c8fd

SHA256
c2779250c7e25bb12281a890f3ec61c3585c5bbad82fbbb55a3068191004fc4a

SHA512
7265c870e9d51cd6f4936860ec4443ae21754634997be1294bd17c8cbe0c23dba56e730bcacecfa73f5b305fbefaf5b75e2747dfd3cd83cfe6b416ac8cc7ecf2

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_ghzascdu.orm.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\temp.ps1

Filesize
379B

MD5
18047e197c6820559730d01035b2955a

SHA1
277179be54bba04c0863aebd496f53b129d47464

SHA256
348342fd00e113a58641b2c35dd6a8f2c1fb2f1b16d8dff9f77b05f29e229ef3

SHA512
1942acd6353310623561efb33d644ba45ab62c1ddfabb1a1b3b1dd93f7d03df0884e2f2fc927676dc3cd3b563d159e3043d2eff81708c556431be9baf4ccb877

Download Submit
\??\c:\Users\Admin\AppData\Local\Temp\0hmbn0lb\0hmbn0lb.0.cs

Filesize
311B

MD5
7bc8de6ac8041186ed68c07205656943

SHA1
673f31957ab1b6ad3dc769e86aedc7ed4b4e0a75

SHA256
36865e3bca9857e07b1137ada07318b9caaef9608256a6a6a7fd426ee03e1697

SHA512
0495839c79597e81d447672f8e85b03d0401f81c7b2011a830874c33812c54dab25b0f89a202bbb71abb4ffc7cb2c07cc37c008b132d4d5d796aebdd12741dba

Download Submit
\??\c:\Users\Admin\AppData\Local\Temp\0hmbn0lb\0hmbn0lb.cmdline

Filesize
369B

MD5
684bd7cb5a45659c9309602ad551badf

SHA1
e643186dbb53e1770d107ec1094acfdfd36a5570

SHA256
4d83596ff69ab617516f39777d2bfa9a760d4fc441899ac5e499d76fbd2bd6fb

SHA512
32745d62f6f5cb296090976f6601b7fe5aaa07c8122138c4e3f1253907fa10e6e2d019107569eca37cd01f8c9b15fe21461d85bd8a2742fa5edf5c38576d6c74

Download Submit
\??\c:\Users\Admin\AppData\Local\Temp\0hmbn0lb\CSC3B82DDB6E4E4D7CB7B28E8E23CABF.TMP

Filesize
652B

MD5
c373b15939489915dd535741f37f182d

SHA1
4d6295b85f34dcebac2b1ac93207974c14d04c38

SHA256
5d0d430701176ebdf03a770ff0423ced1ac493cc10fb2e4375cfdacb4d1154e3

SHA512
8646a4d4c382ed19146db85453999319c77debc1c4eddd2dc1e28b4e2147a278104d20ca34e758478d9229bb6acb906f47fdefd341c4e77cb9491321d5cd48e7

Download Submit
memory/1080-27-0x0000021FAD310000-0x0000021FAD318000-memory.dmp

Filesize
32KB

Download
memory/1080-14-0x0000021FAD750000-0x0000021FAD7C6000-memory.dmp

Filesize
472KB

Download
memory/1080-3-0x0000021FAD190000-0x0000021FAD1B2000-memory.dmp

Filesize
136KB

Download
memory/1080-13-0x0000021FAD330000-0x0000021FAD374000-memory.dmp

Filesize
272KB

Download
memory/5036-39-0x000001EC39830000-0x000001EC39B54000-memory.dmp

Filesize
3.1MB

Download
memory/5036-40-0x000001EC20830000-0x000001EC20880000-memory.dmp

Filesize
320KB

Download
memory/5036-41-0x000001EC3A160000-0x000001EC3A212000-memory.dmp

Filesize
712KB

Download
memory/5036-44-0x000001EC208F0000-0x000001EC20902000-memory.dmp

Filesize
72KB

Download
memory/5036-45-0x000001EC39250000-0x000001EC3928C000-memory.dmp

Filesize
240KB

Download