cb43fff6739186bdf2af5d4f34624c020196616cdae86fb755bf3d250bbe9b12

Analysis

max time kernel
118s
max time network
119s
platform
windows7_x64
resource
win7-20241023-en
resource tags

arch:x64arch:x86image:win7-20241023-enlocale:en-usos:windows7-x64system
submitted
25-12-2024 16:52

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General

Target

LB3.exe
Size

147KB
MD5

67008d6538e43ec4ef57359f7ca4f15f
SHA1

65078b6e640146bde300af0a6d70b91f45244343
SHA256

cb43fff6739186bdf2af5d4f34624c020196616cdae86fb755bf3d250bbe9b12
SHA512

9a9e281dcf6a783cb69f6ab9703af716dd304883ad1a92a17bf4498745b563b2560e4624d839cc7577776d31e22f596d821a183c4c4ec350d7fa7a8f0e44db54
SSDEEP

3072:V6glyuxE4GsUPnliByocWepTN5GqoLVB5FHONF:V6gDBGpvEByocWeX/oZB7u/

Score

10^/10

defense_evasion discovery ransomware spyware stealer

Malware Config

Extracted

Path

C:\IoBMyuygl.README.txt

Ransom Note

~~~ RdpLocker Recode the world's fastest ransomware~~~ >>>> Your data are stolen and encrypted >>>> Info Our encryption is undetectable and we can encrypt terabytes of data in minutes. A unique public and private key is generated exclusively for you. No one else can decrypt the files we have encrypted. Our services are cheap and reliable. >>>> What guarantees that we will not deceive you? We are not a politically motivated group and we do not need anything other than your money. If you pay, we will provide you the programs for decryption and we will delete your data. If we do not give you decrypters, or we do not delete your data after payment, then nobody will pay us in the future. Therefore to us our reputation is very important. We attack the companies worldwide and there is no dissatisfied victim after payment. You can contact us using Tox messenger without registration and SMS to negotiate the price. https://tox.chat/download.html Using Tox messenger, we will never know your real name, it means your privacy is guaranteed. RdpLocker Tox ID: CE93C52BFAFA16570B9821C7D0EE7999C78475AD964ACEEF80767B653210D27E3CE6C88F61A5

URLs

https://tox.chat/download.html

Signatures

Renames multiple (341) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
ransomware

Deletes itself 1 IoCs

pid	Process
800	535E.tmp

Executes dropped EXE 1 IoCs

pid	Process
800	535E.tmp

Loads dropped DLL 1 IoCs

pid	Process
2804	LB3.exe

Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Credentials from Web Browsers
T1555.003

Drops desktop.ini file(s) 2 IoCs

description	ioc	Process
File opened for modification	C:\$Recycle.Bin\S-1-5-21-1163522206-1469769407-485553996-1000\desktop.ini	LB3.exe
File opened for modification	F:\$RECYCLE.BIN\S-1-5-21-1163522206-1469769407-485553996-1000\desktop.ini	LB3.exe

Indicator Removal: File Deletion 1 TTPs
Adversaries may delete files left behind by the actions of their intrusion activity.
defense_evasion

File Deletion
T1070.004

Sets desktop wallpaper using registry 2 TTPs 2 IoCs

ransomware

Defacement

T1491

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1163522206-1469769407-485553996-1000\Control Panel\Desktop\WallPaper = "C:\\ProgramData\\IoBMyuygl.bmp"	LB3.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1163522206-1469769407-485553996-1000\Control Panel\Desktop\Wallpaper = "C:\\ProgramData\\IoBMyuygl.bmp"	LB3.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 5 IoCs

pid	Process
2804	LB3.exe
2804	LB3.exe
2804	LB3.exe
2804	LB3.exe
800	535E.tmp

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	LB3.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	535E.tmp
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Modifies Control Panel 2 IoCs

evasion

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-1163522206-1469769407-485553996-1000\Control Panel\Desktop	LB3.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1163522206-1469769407-485553996-1000\Control Panel\Desktop\WallpaperStyle = "10"	LB3.exe

Modifies registry class 5 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\IoBMyuygl	LB3.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\IoBMyuygl\DefaultIcon\ = "C:\\ProgramData\\IoBMyuygl.ico"	LB3.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.IoBMyuygl	LB3.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.IoBMyuygl\ = "IoBMyuygl"	LB3.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\IoBMyuygl\DefaultIcon	LB3.exe

Suspicious behavior: EnumeratesProcesses 14 IoCs

pid	Process
2804	LB3.exe
2804	LB3.exe
2804	LB3.exe
2804	LB3.exe
2804	LB3.exe
2804	LB3.exe
2804	LB3.exe
2804	LB3.exe
2804	LB3.exe
2804	LB3.exe
2804	LB3.exe
2804	LB3.exe
2804	LB3.exe
2804	LB3.exe

Suspicious behavior: RenamesItself 26 IoCs

pid	Process
800	535E.tmp
800	535E.tmp
800	535E.tmp
800	535E.tmp
800	535E.tmp
800	535E.tmp
800	535E.tmp
800	535E.tmp
800	535E.tmp
800	535E.tmp
800	535E.tmp
800	535E.tmp
800	535E.tmp
800	535E.tmp
800	535E.tmp
800	535E.tmp
800	535E.tmp
800	535E.tmp
800	535E.tmp
800	535E.tmp
800	535E.tmp
800	535E.tmp
800	535E.tmp
800	535E.tmp
800	535E.tmp
800	535E.tmp

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeAssignPrimaryTokenPrivilege	2804	LB3.exe
Token: SeBackupPrivilege	2804	LB3.exe
Token: SeDebugPrivilege	2804	LB3.exe
Token: 36	2804	LB3.exe
Token: SeImpersonatePrivilege	2804	LB3.exe
Token: SeIncBasePriorityPrivilege	2804	LB3.exe
Token: SeIncreaseQuotaPrivilege	2804	LB3.exe
Token: 33	2804	LB3.exe
Token: SeManageVolumePrivilege	2804	LB3.exe
Token: SeProfSingleProcessPrivilege	2804	LB3.exe
Token: SeRestorePrivilege	2804	LB3.exe
Token: SeSecurityPrivilege	2804	LB3.exe
Token: SeSystemProfilePrivilege	2804	LB3.exe
Token: SeTakeOwnershipPrivilege	2804	LB3.exe
Token: SeShutdownPrivilege	2804	LB3.exe
Token: SeDebugPrivilege	2804	LB3.exe
Token: SeBackupPrivilege	2804	LB3.exe
Token: SeBackupPrivilege	2804	LB3.exe
Token: SeSecurityPrivilege	2804	LB3.exe
Token: SeSecurityPrivilege	2804	LB3.exe
Token: SeBackupPrivilege	2804	LB3.exe
Token: SeBackupPrivilege	2804	LB3.exe
Token: SeSecurityPrivilege	2804	LB3.exe
Token: SeSecurityPrivilege	2804	LB3.exe
Token: SeBackupPrivilege	2804	LB3.exe
Token: SeBackupPrivilege	2804	LB3.exe
Token: SeSecurityPrivilege	2804	LB3.exe
Token: SeSecurityPrivilege	2804	LB3.exe
Token: SeBackupPrivilege	2804	LB3.exe
Token: SeBackupPrivilege	2804	LB3.exe
Token: SeSecurityPrivilege	2804	LB3.exe
Token: SeSecurityPrivilege	2804	LB3.exe
Token: SeBackupPrivilege	2804	LB3.exe
Token: SeBackupPrivilege	2804	LB3.exe
Token: SeSecurityPrivilege	2804	LB3.exe
Token: SeSecurityPrivilege	2804	LB3.exe
Token: SeBackupPrivilege	2804	LB3.exe
Token: SeBackupPrivilege	2804	LB3.exe
Token: SeSecurityPrivilege	2804	LB3.exe
Token: SeSecurityPrivilege	2804	LB3.exe
Token: SeBackupPrivilege	2804	LB3.exe
Token: SeBackupPrivilege	2804	LB3.exe
Token: SeSecurityPrivilege	2804	LB3.exe
Token: SeSecurityPrivilege	2804	LB3.exe
Token: SeBackupPrivilege	2804	LB3.exe
Token: SeBackupPrivilege	2804	LB3.exe
Token: SeSecurityPrivilege	2804	LB3.exe
Token: SeSecurityPrivilege	2804	LB3.exe
Token: SeBackupPrivilege	2804	LB3.exe
Token: SeBackupPrivilege	2804	LB3.exe
Token: SeSecurityPrivilege	2804	LB3.exe
Token: SeSecurityPrivilege	2804	LB3.exe
Token: SeBackupPrivilege	2804	LB3.exe
Token: SeBackupPrivilege	2804	LB3.exe
Token: SeSecurityPrivilege	2804	LB3.exe
Token: SeSecurityPrivilege	2804	LB3.exe
Token: SeBackupPrivilege	2804	LB3.exe
Token: SeBackupPrivilege	2804	LB3.exe
Token: SeSecurityPrivilege	2804	LB3.exe
Token: SeSecurityPrivilege	2804	LB3.exe
Token: SeBackupPrivilege	2804	LB3.exe
Token: SeBackupPrivilege	2804	LB3.exe
Token: SeSecurityPrivilege	2804	LB3.exe
Token: SeSecurityPrivilege	2804	LB3.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 2804 wrote to memory of 800	2804	LB3.exe	32
PID 2804 wrote to memory of 800	2804	LB3.exe	32
PID 2804 wrote to memory of 800	2804	LB3.exe	32
PID 2804 wrote to memory of 800	2804	LB3.exe	32
PID 2804 wrote to memory of 800	2804	LB3.exe	32
PID 800 wrote to memory of 2132	800	535E.tmp	33
PID 800 wrote to memory of 2132	800	535E.tmp	33
PID 800 wrote to memory of 2132	800	535E.tmp	33
PID 800 wrote to memory of 2132	800	535E.tmp	33

C:\Users\Admin\AppData\Local\Temp\LB3.exe
"C:\Users\Admin\AppData\Local\Temp\LB3.exe"
1⤵
- Loads dropped DLL
- Drops desktop.ini file(s)
- Sets desktop wallpaper using registry
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Modifies Control Panel
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2804
- C:\ProgramData\535E.tmp
  "C:\ProgramData\535E.tmp"
  2⤵
  - Deletes itself
  - Executes dropped EXE
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: RenamesItself
  - Suspicious use of WriteProcessMemory
  PID:800
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /C DEL /F /Q C:\PROGRA~3\535E.tmp >> NUL
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2132

C:\Windows\system32\AUDIODG.EXE
C:\Windows\system32\AUDIODG.EXE 0x14c
1⤵
PID:2936

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Indicator Removal

T1070

File Deletion

T1070.004

Modify Registry

T1112

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Defacement

T1491

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Downloads

C:\$Recycle.Bin\S-1-5-21-1163522206-1469769407-485553996-1000\desktop.ini

Filesize
129B

MD5
1d66eff6f5b767a4c6dcc2f622c08fba

SHA1
abf8a4716be190b94cf5401dc7035e54eaf5e1c5

SHA256
e64d7f3fa01175e6a2f39a6f6ca98541cf1aee955d3faa3ab84629557fdf25d5

SHA512
a3edec3df9ae353b40af90aa0c98878ff0483c463da1574260f65d295bbd0932ac16f6030eac943486f38f6f009728de65eb83ae262904a9ebd136e20906b017

Download Submit
C:\IoBMyuygl.README.txt

Filesize
1KB

MD5
0fc102c3422c21c1aadfaa1a656dc970

SHA1
49cc540c7a5eaa4f12cacdb21e788335d535ccc0

SHA256
fe49a063ebe0b4154321062c1110876bab03710ab367d8a5e3dee6e75fc79029

SHA512
8cf822ec2d69b4f4bfdc3303b142ff21315d6e5483a98efa834d039f68a6f57e249d374d3c127a65f524123464532afa5700b4dd4808236b082f7a420a260ab0

Download Submit
C:\Users\Admin\AppData\Local\Temp\DDDDDDD

Filesize
147KB

MD5
a5537e2fe1565bdab473e6173bc56955

SHA1
49a1eb7be60448a0f97e80f156d621cd87bc2da9

SHA256
1196f88a624741c4bd8596ceeb61f3a8d73efa5d42fe794b004e3d8f858e3a6f

SHA512
bb6dd5f420b9ac400b95b7a953613204b0a629f9cd47a9463ee7d6447d365067aeadfe7af3145b2d35284a5d9ee05ae3940b6826ec3f956358b872fc067d8041

Download Submit
F:\$RECYCLE.BIN\S-1-5-21-1163522206-1469769407-485553996-1000\DDDDDDDDDDD

Filesize
129B

MD5
382e22df4c0ce755bb475ef5baa6fa6a

SHA1
a9bf4526c54b459f47a4fa8343cf46a6be4acf6c

SHA256
7443c8e0639639a0e5304a74f9798c648150fd93ee38edb77848514c91dc44c9

SHA512
d0719c49a6b049a79ee4caf566238c0beaba56de5462c008a10caac2669e4a9738b61cbbd09d5b891b46224da7c55a62fda8feb123cdbad955a1eacb42ef94cc

Download Submit
\ProgramData\535E.tmp

Filesize
14KB

MD5
294e9f64cb1642dd89229fff0592856b

SHA1
97b148c27f3da29ba7b18d6aee8a0db9102f47c9

SHA256
917e115cc403e29b4388e0d175cbfac3e7e40ca1742299fbdb353847db2de7c2

SHA512
b87d531890bf1577b9b4af41dddb2cdbbfa164cf197bd5987df3a3075983645a3acba443e289b7bfd338422978a104f55298fbfe346872de0895bde44adc89cf

Download Submit
memory/800-875-0x000000007EF20000-0x000000007EF21000-memory.dmp

Filesize
4KB

Download
memory/800-873-0x00000000009B0000-0x00000000009F0000-memory.dmp

Filesize
256KB

Download
memory/800-872-0x00000000009B0000-0x00000000009F0000-memory.dmp

Filesize
256KB

Download
memory/800-871-0x000000007EFA0000-0x000000007EFA1000-memory.dmp

Filesize
4KB

Download
memory/800-874-0x000000007EF80000-0x000000007EF81000-memory.dmp

Filesize
4KB

Download
memory/800-905-0x000000007EF60000-0x000000007EF61000-memory.dmp

Filesize
4KB

Download
memory/800-904-0x000000007EF40000-0x000000007EF41000-memory.dmp

Filesize
4KB

Download
memory/2804-0-0x00000000022A0000-0x00000000022E0000-memory.dmp

Filesize
256KB

Download