2882cbed0fb11c95d01b487a85338f4ec25fd44fc3f0936d68af4832d1be9a54

Analysis

max time kernel
117s
max time network
122s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
25-11-2024 01:10

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

Deletes itself 1 IoCs

Processes:

E678.tmp

pid	Process
2124	E678.tmp

Executes dropped EXE 1 IoCs

Processes:

E678.tmp

pid	Process
2124	E678.tmp

Loads dropped DLL 1 IoCs

Processes:

LB3.exe

pid	Process
304	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

Processes:

LB3.exe

description	ioc	Process
File opened for modification	C:\$Recycle.Bin\S-1-5-21-2703099537-420551529-3771253338-1000\desktop.ini	LB3.exe
File opened for modification	F:\$RECYCLE.BIN\S-1-5-21-2703099537-420551529-3771253338-1000\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

Processes:

LB3.exe

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Control Panel\Desktop\Wallpaper = "C:\\ProgramData\\BNzPckH0e.bmp"	LB3.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Control Panel\Desktop\WallPaper = "C:\\ProgramData\\BNzPckH0e.bmp"	LB3.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

Processes:

E678.tmp

pid	Process
2124	E678.tmp

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

Processes:

LB3.exeE678.tmpcmd.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	LB3.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	E678.tmp
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Modifies Control Panel 2 IoCs

evasion

Processes:

LB3.exe

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Control Panel\Desktop\WallpaperStyle = "10"	LB3.exe
Key created	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Control Panel\Desktop	LB3.exe

Modifies registry class 5 IoCs

Processes:

LB3.exe

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\BNzPckH0e\DefaultIcon	LB3.exe
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

Suspicious behavior: EnumeratesProcesses 14 IoCs

Processes:

LB3.exe

pid	Process
304	LB3.exe
304	LB3.exe
304	LB3.exe
304	LB3.exe
304	LB3.exe
304	LB3.exe
304	LB3.exe
304	LB3.exe
304	LB3.exe
304	LB3.exe
304	LB3.exe
304	LB3.exe
304	LB3.exe
304	LB3.exe

Suspicious behavior: RenamesItself 26 IoCs

Processes:

E678.tmp

pid	Process
2124	E678.tmp
2124	E678.tmp
2124	E678.tmp
2124	E678.tmp
2124	E678.tmp
2124	E678.tmp
2124	E678.tmp
2124	E678.tmp
2124	E678.tmp
2124	E678.tmp
2124	E678.tmp
2124	E678.tmp
2124	E678.tmp
2124	E678.tmp
2124	E678.tmp
2124	E678.tmp
2124	E678.tmp
2124	E678.tmp
2124	E678.tmp
2124	E678.tmp
2124	E678.tmp
2124	E678.tmp
2124	E678.tmp
2124	E678.tmp
2124	E678.tmp
2124	E678.tmp

Suspicious use of AdjustPrivilegeToken 64 IoCs

Processes:

LB3.exe

description	pid	Process
Token: SeAssignPrimaryTokenPrivilege	304	LB3.exe
Token: SeBackupPrivilege	304	LB3.exe
Token: SeDebugPrivilege	304	LB3.exe
Token: 36	304	LB3.exe
Token: SeImpersonatePrivilege	304	LB3.exe
Token: SeIncBasePriorityPrivilege	304	LB3.exe
Token: SeIncreaseQuotaPrivilege	304	LB3.exe
Token: 33	304	LB3.exe
Token: SeManageVolumePrivilege	304	LB3.exe
Token: SeProfSingleProcessPrivilege	304	LB3.exe
Token: SeRestorePrivilege	304	LB3.exe
Token: SeSecurityPrivilege	304	LB3.exe
Token: SeSystemProfilePrivilege	304	LB3.exe
Token: SeTakeOwnershipPrivilege	304	LB3.exe
Token: SeShutdownPrivilege	304	LB3.exe
Token: SeDebugPrivilege	304	LB3.exe
Token: SeBackupPrivilege	304	LB3.exe
Token: SeBackupPrivilege	304	LB3.exe
Token: SeSecurityPrivilege	304	LB3.exe
Token: SeSecurityPrivilege	304	LB3.exe
Token: SeBackupPrivilege	304	LB3.exe
Token: SeBackupPrivilege	304	LB3.exe
Token: SeSecurityPrivilege	304	LB3.exe
Token: SeSecurityPrivilege	304	LB3.exe
Token: SeBackupPrivilege	304	LB3.exe
Token: SeBackupPrivilege	304	LB3.exe
Token: SeSecurityPrivilege	304	LB3.exe
Token: SeSecurityPrivilege	304	LB3.exe
Token: SeBackupPrivilege	304	LB3.exe
Token: SeBackupPrivilege	304	LB3.exe
Token: SeSecurityPrivilege	304	LB3.exe
Token: SeSecurityPrivilege	304	LB3.exe
Token: SeBackupPrivilege	304	LB3.exe
Token: SeBackupPrivilege	304	LB3.exe
Token: SeSecurityPrivilege	304	LB3.exe
Token: SeSecurityPrivilege	304	LB3.exe
Token: SeBackupPrivilege	304	LB3.exe
Token: SeBackupPrivilege	304	LB3.exe
Token: SeSecurityPrivilege	304	LB3.exe
Token: SeSecurityPrivilege	304	LB3.exe
Token: SeBackupPrivilege	304	LB3.exe
Token: SeBackupPrivilege	304	LB3.exe
Token: SeSecurityPrivilege	304	LB3.exe
Token: SeSecurityPrivilege	304	LB3.exe
Token: SeBackupPrivilege	304	LB3.exe
Token: SeBackupPrivilege	304	LB3.exe
Token: SeSecurityPrivilege	304	LB3.exe
Token: SeSecurityPrivilege	304	LB3.exe
Token: SeBackupPrivilege	304	LB3.exe
Token: SeBackupPrivilege	304	LB3.exe
Token: SeSecurityPrivilege	304	LB3.exe
Token: SeSecurityPrivilege	304	LB3.exe
Token: SeBackupPrivilege	304	LB3.exe
Token: SeBackupPrivilege	304	LB3.exe
Token: SeSecurityPrivilege	304	LB3.exe
Token: SeSecurityPrivilege	304	LB3.exe
Token: SeBackupPrivilege	304	LB3.exe
Token: SeBackupPrivilege	304	LB3.exe
Token: SeSecurityPrivilege	304	LB3.exe
Token: SeSecurityPrivilege	304	LB3.exe
Token: SeBackupPrivilege	304	LB3.exe
Token: SeBackupPrivilege	304	LB3.exe
Token: SeSecurityPrivilege	304	LB3.exe
Token: SeSecurityPrivilege	304	LB3.exe

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

LB3.exeE678.tmp

description	pid	Process	procid_target
PID 304 wrote to memory of 2124	304	LB3.exe	33
PID 304 wrote to memory of 2124	304	LB3.exe	33
PID 304 wrote to memory of 2124	304	LB3.exe	33
PID 304 wrote to memory of 2124	304	LB3.exe	33
PID 304 wrote to memory of 2124	304	LB3.exe	33
PID 2124 wrote to memory of 2136	2124	E678.tmp	34
PID 2124 wrote to memory of 2136	2124	E678.tmp	34
PID 2124 wrote to memory of 2136	2124	E678.tmp	34
PID 2124 wrote to memory of 2136	2124	E678.tmp	34

C:\Users\Admin\AppData\Local\Temp\ransom\Build\LB3.exe
"C:\Users\Admin\AppData\Local\Temp\ransom\Build\LB3.exe"
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:304
- C:\ProgramData\E678.tmp
  "C:\ProgramData\E678.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:2124
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /C DEL /F /Q C:\PROGRA~3\E678.tmp >> NUL
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2136

C:\Windows\system32\AUDIODG.EXE
C:\Windows\system32\AUDIODG.EXE 0x14c
1⤵
PID:2760

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 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-1-5-21-2703099537-420551529-3771253338-1000\desktop.ini

Filesize
129B

MD5
fb049ce8b0ba1b0980ab771688d2b88e

SHA1
3bda751c709cf6ce3c650b347a24b4f6e3b0a226

SHA256
ea008df100f89e5638bd312038a039d28c3647a1791a8961fc0b4b7c299de637

SHA512
46c86a4cc06e1f6946edad4eebeca73e27e5380557098e04ac327586bead64a235d21f29965aa88841ce083ba20a324f11bfcbd052fe6aa0bf0c4eea8b2dfc1d

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
fb22a0f860407ecbd974c4482da71d24

SHA1
6f15450b5d506aeb513eda7aa291346d82186a76

SHA256
098a689b9c056f5e2d875d93988b9a38dee7d8f0c17b20a067570ada457b33fa

SHA512
fe62eb777f86dd9dc96f3972437904f6fd3b2d2620a97e2ba6334a43e9d3ff252100bcbb779135004e354e465c98abb76cd8f3a8bc49a21b8931845242026b07

Download Submit
F:\$RECYCLE.BIN\S-1-5-21-2703099537-420551529-3771253338-1000\DDDDDDDDDDD

Filesize
129B

MD5
49192a1339cfb45274f014c35683a130

SHA1
20e663ff9eafca460fd17ce4ebb6d057e7e8a4ed

SHA256
74f9bce0ced316c5d0db8f706f5eabff7d8e149b4e0662aa3e0c626923a92e27

SHA512
69275db05aa9bc781c2506bc0838914fb7c2775a529f47df46c8bf2883035a3131826aa8018fc9d52131150818016130c1c573c51871d9979c23120c16c2bdf2

Download Submit
\ProgramData\E678.tmp

Filesize
14KB

MD5
294e9f64cb1642dd89229fff0592856b

SHA1
97b148c27f3da29ba7b18d6aee8a0db9102f47c9

SHA256
917e115cc403e29b4388e0d175cbfac3e7e40ca1742299fbdb353847db2de7c2

SHA512
b87d531890bf1577b9b4af41dddb2cdbbfa164cf197bd5987df3a3075983645a3acba443e289b7bfd338422978a104f55298fbfe346872de0895bde44adc89cf

Download Submit
memory/304-0-0x0000000000D50000-0x0000000000D90000-memory.dmp

Filesize
256KB

Download
memory/2124-897-0x000000007EFA0000-0x000000007EFA1000-memory.dmp

Filesize
4KB

Download
memory/2124-901-0x000000007EF20000-0x000000007EF21000-memory.dmp

Filesize
4KB

Download
memory/2124-900-0x000000007EF80000-0x000000007EF81000-memory.dmp

Filesize
4KB

Download
memory/2124-899-0x00000000022B0000-0x00000000022F0000-memory.dmp

Filesize
256KB

Download
memory/2124-931-0x000000007EF60000-0x000000007EF61000-memory.dmp

Filesize
4KB

Download
memory/2124-930-0x000000007EF40000-0x000000007EF41000-memory.dmp

Filesize
4KB

Download