2882cbed0fb11c95d01b487a85338f4ec25fd44fc3f0936d68af4832d1be9a54

Resubmissions

05/02/2025, 11:06

250205-m7gf3svpcl 10

25/11/2024, 01:10

241125-bjt7gswjcj 10

Analysis

max time kernel
118s
max time network
122s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
05/02/2025, 11:06

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General

Target

ransom/Build/LB3.exe
Size

145KB
MD5

b2cb742a43762106fc03fa1e26fd4f68
SHA1

aef4e9199b06b835b6e677c0910d3ed6fdf96ef3
SHA256

f4dcf20fcdd95d241eadcd88ce30998189d0682132456e9254321a8d6d281611
SHA512

d0521e8a496e53a309acf7f9d388e684bfa068cc77d23ae6a7da75e6dea962b2a9e3dd5a27dc5e45c054aa025e3ff1a3c237a996aab2fbcfaa68483481ca4975
SSDEEP

3072:5qJogYkcSNm9V7D58PleQQuloQwssCnT:5q2kc4m9tDcQvuiQfD

Score

9^/10

defense_evasion discovery ransomware spyware stealer

Malware Config

Signatures

Renames multiple (356) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
ransomware

Deletes itself 1 IoCs

pid	Process
2376	FA66.tmp

Executes dropped EXE 1 IoCs

pid	Process
2376	FA66.tmp

Loads dropped DLL 1 IoCs

pid	Process
2436	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-1-5-21-3063565911-2056067323-3330884624-1000\desktop.ini	LB3.exe
File opened for modification	F:\$RECYCLE.BIN\S-1-5-21-3063565911-2056067323-3330884624-1000\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-1-5-21-3063565911-2056067323-3330884624-1000\Control Panel\Desktop\WallPaper = "C:\\ProgramData\\BNzPckH0e.bmp"	LB3.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3063565911-2056067323-3330884624-1000\Control Panel\Desktop\Wallpaper = "C:\\ProgramData\\BNzPckH0e.bmp"	LB3.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
2376	FA66.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	FA66.tmp
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Modifies Control Panel 2 IoCs

defense_evasion

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3063565911-2056067323-3330884624-1000\Control Panel\Desktop	LB3.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3063565911-2056067323-3330884624-1000\Control Panel\Desktop\WallpaperStyle = "10"	LB3.exe

Modifies registry class 5 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\BNzPckH0e	LB3.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\BNzPckH0e\DefaultIcon\ = "C:\\ProgramData\\BNzPckH0e.ico"	LB3.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.BNzPckH0e	LB3.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.BNzPckH0e\ = "BNzPckH0e"	LB3.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\BNzPckH0e\DefaultIcon	LB3.exe

Suspicious behavior: EnumeratesProcesses 14 IoCs

pid	Process
2436	LB3.exe
2436	LB3.exe
2436	LB3.exe
2436	LB3.exe
2436	LB3.exe
2436	LB3.exe
2436	LB3.exe
2436	LB3.exe
2436	LB3.exe
2436	LB3.exe
2436	LB3.exe
2436	LB3.exe
2436	LB3.exe
2436	LB3.exe

Suspicious behavior: RenamesItself 26 IoCs

pid	Process
2376	FA66.tmp
2376	FA66.tmp
2376	FA66.tmp
2376	FA66.tmp
2376	FA66.tmp
2376	FA66.tmp
2376	FA66.tmp
2376	FA66.tmp
2376	FA66.tmp
2376	FA66.tmp
2376	FA66.tmp
2376	FA66.tmp
2376	FA66.tmp
2376	FA66.tmp
2376	FA66.tmp
2376	FA66.tmp
2376	FA66.tmp
2376	FA66.tmp
2376	FA66.tmp
2376	FA66.tmp
2376	FA66.tmp
2376	FA66.tmp
2376	FA66.tmp
2376	FA66.tmp
2376	FA66.tmp
2376	FA66.tmp

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeAssignPrimaryTokenPrivilege	2436	LB3.exe
Token: SeBackupPrivilege	2436	LB3.exe
Token: SeDebugPrivilege	2436	LB3.exe
Token: 36	2436	LB3.exe
Token: SeImpersonatePrivilege	2436	LB3.exe
Token: SeIncBasePriorityPrivilege	2436	LB3.exe
Token: SeIncreaseQuotaPrivilege	2436	LB3.exe
Token: 33	2436	LB3.exe
Token: SeManageVolumePrivilege	2436	LB3.exe
Token: SeProfSingleProcessPrivilege	2436	LB3.exe
Token: SeRestorePrivilege	2436	LB3.exe
Token: SeSecurityPrivilege	2436	LB3.exe
Token: SeSystemProfilePrivilege	2436	LB3.exe
Token: SeTakeOwnershipPrivilege	2436	LB3.exe
Token: SeShutdownPrivilege	2436	LB3.exe
Token: SeDebugPrivilege	2436	LB3.exe
Token: SeBackupPrivilege	2436	LB3.exe
Token: SeBackupPrivilege	2436	LB3.exe
Token: SeSecurityPrivilege	2436	LB3.exe
Token: SeSecurityPrivilege	2436	LB3.exe
Token: SeBackupPrivilege	2436	LB3.exe
Token: SeBackupPrivilege	2436	LB3.exe
Token: SeSecurityPrivilege	2436	LB3.exe
Token: SeSecurityPrivilege	2436	LB3.exe
Token: SeBackupPrivilege	2436	LB3.exe
Token: SeBackupPrivilege	2436	LB3.exe
Token: SeSecurityPrivilege	2436	LB3.exe
Token: SeSecurityPrivilege	2436	LB3.exe
Token: SeBackupPrivilege	2436	LB3.exe
Token: SeBackupPrivilege	2436	LB3.exe
Token: SeSecurityPrivilege	2436	LB3.exe
Token: SeSecurityPrivilege	2436	LB3.exe
Token: SeBackupPrivilege	2436	LB3.exe
Token: SeBackupPrivilege	2436	LB3.exe
Token: SeSecurityPrivilege	2436	LB3.exe
Token: SeSecurityPrivilege	2436	LB3.exe
Token: SeBackupPrivilege	2436	LB3.exe
Token: SeBackupPrivilege	2436	LB3.exe
Token: SeSecurityPrivilege	2436	LB3.exe
Token: SeSecurityPrivilege	2436	LB3.exe
Token: SeBackupPrivilege	2436	LB3.exe
Token: SeBackupPrivilege	2436	LB3.exe
Token: SeSecurityPrivilege	2436	LB3.exe
Token: SeSecurityPrivilege	2436	LB3.exe
Token: SeBackupPrivilege	2436	LB3.exe
Token: SeBackupPrivilege	2436	LB3.exe
Token: SeSecurityPrivilege	2436	LB3.exe
Token: SeSecurityPrivilege	2436	LB3.exe
Token: SeBackupPrivilege	2436	LB3.exe
Token: SeBackupPrivilege	2436	LB3.exe
Token: SeSecurityPrivilege	2436	LB3.exe
Token: SeSecurityPrivilege	2436	LB3.exe
Token: SeBackupPrivilege	2436	LB3.exe
Token: SeBackupPrivilege	2436	LB3.exe
Token: SeSecurityPrivilege	2436	LB3.exe
Token: SeSecurityPrivilege	2436	LB3.exe
Token: SeBackupPrivilege	2436	LB3.exe
Token: SeBackupPrivilege	2436	LB3.exe
Token: SeSecurityPrivilege	2436	LB3.exe
Token: SeSecurityPrivilege	2436	LB3.exe
Token: SeBackupPrivilege	2436	LB3.exe
Token: SeBackupPrivilege	2436	LB3.exe
Token: SeSecurityPrivilege	2436	LB3.exe
Token: SeSecurityPrivilege	2436	LB3.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 2436 wrote to memory of 2376	2436	LB3.exe	33
PID 2436 wrote to memory of 2376	2436	LB3.exe	33
PID 2436 wrote to memory of 2376	2436	LB3.exe	33
PID 2436 wrote to memory of 2376	2436	LB3.exe	33
PID 2436 wrote to memory of 2376	2436	LB3.exe	33
PID 2376 wrote to memory of 1540	2376	FA66.tmp	34
PID 2376 wrote to memory of 1540	2376	FA66.tmp	34
PID 2376 wrote to memory of 1540	2376	FA66.tmp	34
PID 2376 wrote to memory of 1540	2376	FA66.tmp	34

C:\Users\Admin\AppData\Local\Temp\ransom\Build\LB3.exe
C:\Users\Admin\AppData\Local\Temp\ransom\Build\LB3.exe dsrm -subtree -noprompt -c user"http://+:443"
1⤵
- Loads dropped DLL
- Drops desktop.ini file(s)
- Sets desktop wallpaper using registry
- System Location Discovery: System Language Discovery
- Modifies Control Panel
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2436
- C:\ProgramData\FA66.tmp
  "C:\ProgramData\FA66.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:2376
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /C DEL /F /Q C:\PROGRA~3\FA66.tmp >> NUL
    3⤵
    - System Location Discovery: System Language Discovery
    PID:1540

C:\Windows\system32\AUDIODG.EXE
C:\Windows\system32\AUDIODG.EXE 0x148
1⤵
PID:2932

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

Replay Monitor

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Downloads

C:\$Recycle.Bin\S-1-5-21-3063565911-2056067323-3330884624-1000\desktop.ini

Filesize
129B

MD5
764105f82149f12fa97003fb1d7956d7

SHA1
d8f539e68926e7ebd9d883ee36369503dd4908b8

SHA256
f6ecbcbd109866bbeb40f08f8bccea9019b1b1d6f356eb90ec7dfa49553e51d8

SHA512
2e486ce1e22fbb4a62e7f6e1d18f8b329480a33313b9412ffa937366ca02225e0017b96ec43ddb275c7abef28b1ba86b14fb6ec5f2be17b3c4f70893f1fc4a2a

Download Submit
C:\BNzPckH0e.README.txt

Filesize
93B

MD5
eaebdbc14b3c2ecdcec757fc361f5589

SHA1
02ec5589c9f3c671c464671faaf1b8343d849490

SHA256
0f037f3ac40aa8e999e3394d3741594b3410581f89eb467863e0ff30fa2417da

SHA512
14f5876fd27dbff0784e851e1c2fe4c68f70dc3b0cc2e95f10ab28bc872f90e82bb590f441379b73579c54680132a6961d216b9c18cd9648f9a45d4a72db660f

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

Filesize
145KB

MD5
2273482adead36346442411e730a6b67

SHA1
8fe5689de7692f12073031275ba8b6251d97af95

SHA256
a8287d64295b8e3a0be665f1838421a0d9368b4ea319c02ea7a3761bb89c5f25

SHA512
887a2c57c0a44b54139cfa39add3bd753c4e21197ef942a5278bba4dc91d1ab3f03c934e2d22d4e75804b121907547103e88ef8481f6c40dbb3a37107f59528d

Download Submit
F:\$RECYCLE.BIN\S-1-5-21-3063565911-2056067323-3330884624-1000\FFFFFFFFFFF

Filesize
129B

MD5
1321dbbb5d831690aec76cfdbad12710

SHA1
b62c9d078e765cab4c1d6a846736d58674defb21

SHA256
815443b4abb5b18234d222e66b59918ca069f721a0c52ae2a7596021874e9085

SHA512
acfb1eee2b30d87801c9c846e6617f91a4c898c5892c29a8b061a6d20c5fa76b3a072244fa4a288acbf83eba579de2ed0d0ca7a7d1ed6344f25c045a4d52571b

Download Submit
\ProgramData\FA66.tmp

Filesize
14KB

MD5
294e9f64cb1642dd89229fff0592856b

SHA1
97b148c27f3da29ba7b18d6aee8a0db9102f47c9

SHA256
917e115cc403e29b4388e0d175cbfac3e7e40ca1742299fbdb353847db2de7c2

SHA512
b87d531890bf1577b9b4af41dddb2cdbbfa164cf197bd5987df3a3075983645a3acba443e289b7bfd338422978a104f55298fbfe346872de0895bde44adc89cf

Download Submit
memory/2376-893-0x000000007EFA0000-0x000000007EFA1000-memory.dmp

Filesize
4KB

Download
memory/2376-895-0x0000000000280000-0x00000000002C0000-memory.dmp

Filesize
256KB

Download
memory/2376-897-0x000000007EF20000-0x000000007EF21000-memory.dmp

Filesize
4KB

Download
memory/2376-896-0x000000007EF80000-0x000000007EF81000-memory.dmp

Filesize
4KB

Download
memory/2376-927-0x000000007EF60000-0x000000007EF61000-memory.dmp

Filesize
4KB

Download
memory/2376-926-0x000000007EF40000-0x000000007EF41000-memory.dmp

Filesize
4KB

Download
memory/2436-0-0x0000000000380000-0x00000000003C0000-memory.dmp

Filesize
256KB

Download