2882cbed0fb11c95d01b487a85338f4ec25fd44fc3f0936d68af4832d1be9a54

Analysis

max time kernel
72s
max time network
19s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
25-11-2024 01:10

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

ransom/Build/LB3_ReflectiveDll_DllMain.dll
Size

98KB
MD5

31d3ab7a5a7a2d7b197c741fe0f374d5
SHA1

7e925b5a2b7283986128d45527fe1ac70d4a606d
SHA256

6efbd82980c404bcc767108da00e4239b9dc779c4a90c9961619dc1ef4bc527e
SHA512

82f186c91beb14ca135b70bc3e43dcbdf0387c862ed3d16f138bb573b244d1cb1a4930d87351dc3a4a36fc36db390b574b4fa7580cf2dd0af09dc1469453b61b
SSDEEP

1536:NzICS4A30TY1kUS/U2ztdS1I6DdL9Ta1HX1P9tWTSyF6ARsg89:eJ0TYyUS/U2RgGWL9+xh9cTSY6AR4

Score

9^/10

defense_evasion discovery ransomware spyware stealer

Malware Config

Signatures

Renames multiple (278) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
ransomware

Deletes itself 1 IoCs

Processes:

BE21.tmp

pid	Process
1752	BE21.tmp

Executes dropped EXE 1 IoCs

Processes:

BE21.tmp

pid	Process
1752	BE21.tmp

Loads dropped DLL 1 IoCs

Processes:

rundll32.exe

pid	Process
2044	rundll32.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
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

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

Processes:

BE21.tmp

pid	Process
1752	BE21.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:

rundll32.exeBE21.tmpcmd.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	BE21.tmp
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Modifies registry class 5 IoCs

Processes:

rundll32.exe

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.BNzPckH0e	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.BNzPckH0e\ = "BNzPckH0e"	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\BNzPckH0e\DefaultIcon	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\BNzPckH0e	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\BNzPckH0e\DefaultIcon\ = "C:\\ProgramData\\BNzPckH0e.ico"	rundll32.exe

Suspicious behavior: EnumeratesProcesses 14 IoCs

Processes:

rundll32.exe

pid	Process
2044	rundll32.exe
2044	rundll32.exe
2044	rundll32.exe
2044	rundll32.exe
2044	rundll32.exe
2044	rundll32.exe
2044	rundll32.exe
2044	rundll32.exe
2044	rundll32.exe
2044	rundll32.exe
2044	rundll32.exe
2044	rundll32.exe
2044	rundll32.exe
2044	rundll32.exe

Suspicious behavior: RenamesItself 26 IoCs

Processes:

BE21.tmp

pid	Process
1752	BE21.tmp
1752	BE21.tmp
1752	BE21.tmp
1752	BE21.tmp
1752	BE21.tmp
1752	BE21.tmp
1752	BE21.tmp
1752	BE21.tmp
1752	BE21.tmp
1752	BE21.tmp
1752	BE21.tmp
1752	BE21.tmp
1752	BE21.tmp
1752	BE21.tmp
1752	BE21.tmp
1752	BE21.tmp
1752	BE21.tmp
1752	BE21.tmp
1752	BE21.tmp
1752	BE21.tmp
1752	BE21.tmp
1752	BE21.tmp
1752	BE21.tmp
1752	BE21.tmp
1752	BE21.tmp
1752	BE21.tmp

Suspicious use of AdjustPrivilegeToken 64 IoCs

Processes:

rundll32.exe

description	pid	Process
Token: SeAssignPrimaryTokenPrivilege	2044	rundll32.exe
Token: SeBackupPrivilege	2044	rundll32.exe
Token: SeDebugPrivilege	2044	rundll32.exe
Token: 36	2044	rundll32.exe
Token: SeImpersonatePrivilege	2044	rundll32.exe
Token: SeIncBasePriorityPrivilege	2044	rundll32.exe
Token: SeIncreaseQuotaPrivilege	2044	rundll32.exe
Token: 33	2044	rundll32.exe
Token: SeManageVolumePrivilege	2044	rundll32.exe
Token: SeProfSingleProcessPrivilege	2044	rundll32.exe
Token: SeRestorePrivilege	2044	rundll32.exe
Token: SeSecurityPrivilege	2044	rundll32.exe
Token: SeSystemProfilePrivilege	2044	rundll32.exe
Token: SeTakeOwnershipPrivilege	2044	rundll32.exe
Token: SeShutdownPrivilege	2044	rundll32.exe
Token: SeDebugPrivilege	2044	rundll32.exe
Token: SeBackupPrivilege	2044	rundll32.exe
Token: SeBackupPrivilege	2044	rundll32.exe
Token: SeSecurityPrivilege	2044	rundll32.exe
Token: SeSecurityPrivilege	2044	rundll32.exe
Token: SeBackupPrivilege	2044	rundll32.exe
Token: SeBackupPrivilege	2044	rundll32.exe
Token: SeSecurityPrivilege	2044	rundll32.exe
Token: SeSecurityPrivilege	2044	rundll32.exe
Token: SeBackupPrivilege	2044	rundll32.exe
Token: SeBackupPrivilege	2044	rundll32.exe
Token: SeSecurityPrivilege	2044	rundll32.exe
Token: SeSecurityPrivilege	2044	rundll32.exe
Token: SeBackupPrivilege	2044	rundll32.exe
Token: SeBackupPrivilege	2044	rundll32.exe
Token: SeSecurityPrivilege	2044	rundll32.exe
Token: SeSecurityPrivilege	2044	rundll32.exe
Token: SeBackupPrivilege	2044	rundll32.exe
Token: SeBackupPrivilege	2044	rundll32.exe
Token: SeSecurityPrivilege	2044	rundll32.exe
Token: SeSecurityPrivilege	2044	rundll32.exe
Token: SeBackupPrivilege	2044	rundll32.exe
Token: SeBackupPrivilege	2044	rundll32.exe
Token: SeSecurityPrivilege	2044	rundll32.exe
Token: SeSecurityPrivilege	2044	rundll32.exe
Token: SeBackupPrivilege	2044	rundll32.exe
Token: SeBackupPrivilege	2044	rundll32.exe
Token: SeSecurityPrivilege	2044	rundll32.exe
Token: SeSecurityPrivilege	2044	rundll32.exe
Token: SeBackupPrivilege	2044	rundll32.exe
Token: SeBackupPrivilege	2044	rundll32.exe
Token: SeSecurityPrivilege	2044	rundll32.exe
Token: SeSecurityPrivilege	2044	rundll32.exe
Token: SeBackupPrivilege	2044	rundll32.exe
Token: SeBackupPrivilege	2044	rundll32.exe
Token: SeSecurityPrivilege	2044	rundll32.exe
Token: SeSecurityPrivilege	2044	rundll32.exe
Token: SeBackupPrivilege	2044	rundll32.exe
Token: SeBackupPrivilege	2044	rundll32.exe
Token: SeSecurityPrivilege	2044	rundll32.exe
Token: SeSecurityPrivilege	2044	rundll32.exe
Token: SeBackupPrivilege	2044	rundll32.exe
Token: SeBackupPrivilege	2044	rundll32.exe
Token: SeSecurityPrivilege	2044	rundll32.exe
Token: SeSecurityPrivilege	2044	rundll32.exe
Token: SeBackupPrivilege	2044	rundll32.exe
Token: SeBackupPrivilege	2044	rundll32.exe
Token: SeSecurityPrivilege	2044	rundll32.exe
Token: SeSecurityPrivilege	2044	rundll32.exe

Suspicious use of WriteProcessMemory 16 IoCs

Processes:

rundll32.exerundll32.exeBE21.tmp

description	pid	Process	procid_target
PID 2116 wrote to memory of 2044	2116	rundll32.exe	30
PID 2116 wrote to memory of 2044	2116	rundll32.exe	30
PID 2116 wrote to memory of 2044	2116	rundll32.exe	30
PID 2116 wrote to memory of 2044	2116	rundll32.exe	30
PID 2116 wrote to memory of 2044	2116	rundll32.exe	30
PID 2116 wrote to memory of 2044	2116	rundll32.exe	30
PID 2116 wrote to memory of 2044	2116	rundll32.exe	30
PID 2044 wrote to memory of 1752	2044	rundll32.exe	34
PID 2044 wrote to memory of 1752	2044	rundll32.exe	34
PID 2044 wrote to memory of 1752	2044	rundll32.exe	34
PID 2044 wrote to memory of 1752	2044	rundll32.exe	34
PID 2044 wrote to memory of 1752	2044	rundll32.exe	34
PID 1752 wrote to memory of 2016	1752	BE21.tmp	35
PID 1752 wrote to memory of 2016	1752	BE21.tmp	35
PID 1752 wrote to memory of 2016	1752	BE21.tmp	35
PID 1752 wrote to memory of 2016	1752	BE21.tmp	35

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\ransom\Build\LB3_ReflectiveDll_DllMain.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2116
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\ransom\Build\LB3_ReflectiveDll_DllMain.dll,#1
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Modifies registry class
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2044
- - C:\ProgramData\BE21.tmp
    "C:\ProgramData\BE21.tmp"
    3⤵
    - Deletes itself
    - Executes dropped EXE
    - Suspicious use of NtSetInformationThreadHideFromDebugger
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: RenamesItself
    - Suspicious use of WriteProcessMemory
    PID:1752
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C DEL /F /Q C:\PROGRA~3\BE21.tmp >> NUL
      4⤵
      System Location Discovery: System Language Discovery
      PID:2016

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Indicator Removal

T1070

File Deletion

T1070.004

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

Replay Monitor

Loading Replay Monitor...

Downloads

C:\BNzPckH0e.README.txt

Filesize
93B

MD5
eaebdbc14b3c2ecdcec757fc361f5589

SHA1
02ec5589c9f3c671c464671faaf1b8343d849490

SHA256
0f037f3ac40aa8e999e3394d3741594b3410581f89eb467863e0ff30fa2417da

SHA512
14f5876fd27dbff0784e851e1c2fe4c68f70dc3b0cc2e95f10ab28bc872f90e82bb590f441379b73579c54680132a6961d216b9c18cd9648f9a45d4a72db660f

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

Filesize
98KB

MD5
a0a732e25c64a2826bec452b47fd6544

SHA1
820ba8431a81824ae28551c105767ee20fafb50c

SHA256
42d0bc63b6055bb6e33bfbe1cbee512548be17309923202793bc33d550c5b46d

SHA512
53abd6c9377eeb505ead6b6a062889beb45f0d12940c791f6efc9ae2cdf58a320cc66aa29d0c59ef44cdb0f1c9e6756785bb19cf9b4766d5ee5f562139b37df8

Download Submit
\ProgramData\BE21.tmp

Filesize
14KB

MD5
294e9f64cb1642dd89229fff0592856b

SHA1
97b148c27f3da29ba7b18d6aee8a0db9102f47c9

SHA256
917e115cc403e29b4388e0d175cbfac3e7e40ca1742299fbdb353847db2de7c2

SHA512
b87d531890bf1577b9b4af41dddb2cdbbfa164cf197bd5987df3a3075983645a3acba443e289b7bfd338422978a104f55298fbfe346872de0895bde44adc89cf

Download Submit
memory/1752-613-0x0000000000230000-0x0000000000270000-memory.dmp

Filesize
256KB

Download
memory/1752-615-0x000000007EF20000-0x000000007EF21000-memory.dmp

Filesize
4KB

Download
memory/1752-614-0x000000007EF80000-0x000000007EF81000-memory.dmp

Filesize
4KB

Download
memory/1752-612-0x0000000000230000-0x0000000000270000-memory.dmp

Filesize
256KB

Download
memory/1752-611-0x000000007EFA0000-0x000000007EFA1000-memory.dmp

Filesize
4KB

Download
memory/1752-647-0x000000007EF60000-0x000000007EF61000-memory.dmp

Filesize
4KB

Download
memory/1752-646-0x000000007EF40000-0x000000007EF41000-memory.dmp

Filesize
4KB

Download
memory/2044-0-0x0000000001DF0000-0x0000000001E30000-memory.dmp

Filesize
256KB

Download
memory/2044-616-0x0000000001DF0000-0x0000000001E30000-memory.dmp

Filesize
256KB

Download
memory/2044-617-0x0000000003D50000-0x0000000003D90000-memory.dmp

Filesize
256KB

Download
memory/2044-588-0x0000000003D50000-0x0000000003D90000-memory.dmp

Filesize
256KB

Download