Malware Analysis Report

2024-10-16 03:22

Sample ID 220921-nc84aagbf2
Target LockBit30.7z
SHA256 1d6561c4714fadf16bcfb244a5444a959a953424d8e2c6acca6ccb2e20117e74
Tags
blackmatter
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral6

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral3

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral4

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral5

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

1d6561c4714fadf16bcfb244a5444a959a953424d8e2c6acca6ccb2e20117e74

Threat Level: Known bad

The file LockBit30.7z was found to be: Known bad.

Malicious Activity Summary

blackmatter

Blackmatter family

Suspicious behavior: CmdExeWriteProcessMemorySpam

Suspicious use of WriteProcessMemory

MITRE ATT&CK

N/A

Analysis: static1

Detonation Overview

Reported

2022-09-21 11:21

Signatures

Blackmatter family

blackmatter

Analysis: behavioral6

Detonation Overview

Submitted

2022-09-21 11:16

Reported

2022-09-21 11:27

Platform

win10v2004-20220812-en

Max time kernel

91s

Max time network

126s

Command Line

"C:\Users\Admin\AppData\Local\Temp\keygen.exe"

Signatures

N/A

Processes

C:\Users\Admin\AppData\Local\Temp\keygen.exe

"C:\Users\Admin\AppData\Local\Temp\keygen.exe"

Network

Country Destination Domain Proto
US 93.184.220.29:80 tcp
NL 95.101.78.82:80 tcp
NL 104.80.225.205:443 tcp
US 93.184.221.240:80 tcp

Files

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2022-09-21 11:16

Reported

2022-09-21 11:27

Platform

win7-20220812-en

Max time kernel

43s

Max time network

46s

Command Line

cmd /c "C:\Users\Admin\AppData\Local\Temp\Build.bat"

Signatures

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 736 wrote to memory of 1880 N/A C:\Windows\system32\cmd.exe C:\Users\Admin\AppData\Local\Temp\keygen.exe
PID 736 wrote to memory of 1880 N/A C:\Windows\system32\cmd.exe C:\Users\Admin\AppData\Local\Temp\keygen.exe
PID 736 wrote to memory of 1880 N/A C:\Windows\system32\cmd.exe C:\Users\Admin\AppData\Local\Temp\keygen.exe
PID 736 wrote to memory of 1880 N/A C:\Windows\system32\cmd.exe C:\Users\Admin\AppData\Local\Temp\keygen.exe
PID 736 wrote to memory of 888 N/A C:\Windows\system32\cmd.exe C:\Users\Admin\AppData\Local\Temp\builder.exe
PID 736 wrote to memory of 888 N/A C:\Windows\system32\cmd.exe C:\Users\Admin\AppData\Local\Temp\builder.exe
PID 736 wrote to memory of 888 N/A C:\Windows\system32\cmd.exe C:\Users\Admin\AppData\Local\Temp\builder.exe
PID 736 wrote to memory of 888 N/A C:\Windows\system32\cmd.exe C:\Users\Admin\AppData\Local\Temp\builder.exe
PID 736 wrote to memory of 980 N/A C:\Windows\system32\cmd.exe C:\Users\Admin\AppData\Local\Temp\builder.exe
PID 736 wrote to memory of 980 N/A C:\Windows\system32\cmd.exe C:\Users\Admin\AppData\Local\Temp\builder.exe
PID 736 wrote to memory of 980 N/A C:\Windows\system32\cmd.exe C:\Users\Admin\AppData\Local\Temp\builder.exe
PID 736 wrote to memory of 980 N/A C:\Windows\system32\cmd.exe C:\Users\Admin\AppData\Local\Temp\builder.exe
PID 736 wrote to memory of 1752 N/A C:\Windows\system32\cmd.exe C:\Users\Admin\AppData\Local\Temp\builder.exe
PID 736 wrote to memory of 1752 N/A C:\Windows\system32\cmd.exe C:\Users\Admin\AppData\Local\Temp\builder.exe
PID 736 wrote to memory of 1752 N/A C:\Windows\system32\cmd.exe C:\Users\Admin\AppData\Local\Temp\builder.exe
PID 736 wrote to memory of 1752 N/A C:\Windows\system32\cmd.exe C:\Users\Admin\AppData\Local\Temp\builder.exe
PID 736 wrote to memory of 2040 N/A C:\Windows\system32\cmd.exe C:\Users\Admin\AppData\Local\Temp\builder.exe
PID 736 wrote to memory of 2040 N/A C:\Windows\system32\cmd.exe C:\Users\Admin\AppData\Local\Temp\builder.exe
PID 736 wrote to memory of 2040 N/A C:\Windows\system32\cmd.exe C:\Users\Admin\AppData\Local\Temp\builder.exe
PID 736 wrote to memory of 2040 N/A C:\Windows\system32\cmd.exe C:\Users\Admin\AppData\Local\Temp\builder.exe
PID 736 wrote to memory of 1484 N/A C:\Windows\system32\cmd.exe C:\Users\Admin\AppData\Local\Temp\builder.exe
PID 736 wrote to memory of 1484 N/A C:\Windows\system32\cmd.exe C:\Users\Admin\AppData\Local\Temp\builder.exe
PID 736 wrote to memory of 1484 N/A C:\Windows\system32\cmd.exe C:\Users\Admin\AppData\Local\Temp\builder.exe
PID 736 wrote to memory of 1484 N/A C:\Windows\system32\cmd.exe C:\Users\Admin\AppData\Local\Temp\builder.exe
PID 736 wrote to memory of 1992 N/A C:\Windows\system32\cmd.exe C:\Users\Admin\AppData\Local\Temp\builder.exe
PID 736 wrote to memory of 1992 N/A C:\Windows\system32\cmd.exe C:\Users\Admin\AppData\Local\Temp\builder.exe
PID 736 wrote to memory of 1992 N/A C:\Windows\system32\cmd.exe C:\Users\Admin\AppData\Local\Temp\builder.exe
PID 736 wrote to memory of 1992 N/A C:\Windows\system32\cmd.exe C:\Users\Admin\AppData\Local\Temp\builder.exe

Processes

C:\Windows\system32\cmd.exe

cmd /c "C:\Users\Admin\AppData\Local\Temp\Build.bat"

C:\Users\Admin\AppData\Local\Temp\keygen.exe

keygen -path C:\Users\Admin\AppData\Local\Temp\Build -pubkey pub.key -privkey priv.key

C:\Users\Admin\AppData\Local\Temp\builder.exe

builder -type dec -privkey C:\Users\Admin\AppData\Local\Temp\Build\priv.key -config config.json -ofile C:\Users\Admin\AppData\Local\Temp\Build\LB3Decryptor.exe

C:\Users\Admin\AppData\Local\Temp\builder.exe

builder -type enc -exe -pubkey C:\Users\Admin\AppData\Local\Temp\Build\pub.key -config config.json -ofile C:\Users\Admin\AppData\Local\Temp\Build\LB3.exe

C:\Users\Admin\AppData\Local\Temp\builder.exe

builder -type enc -exe -pass -pubkey C:\Users\Admin\AppData\Local\Temp\Build\pub.key -config config.json -ofile C:\Users\Admin\AppData\Local\Temp\Build\LB3_pass.exe

C:\Users\Admin\AppData\Local\Temp\builder.exe

builder -type enc -dll -pubkey C:\Users\Admin\AppData\Local\Temp\Build\pub.key -config config.json -ofile C:\Users\Admin\AppData\Local\Temp\Build\LB3_Rundll32.dll

C:\Users\Admin\AppData\Local\Temp\builder.exe

builder -type enc -dll -pass -pubkey C:\Users\Admin\AppData\Local\Temp\Build\pub.key -config config.json -ofile C:\Users\Admin\AppData\Local\Temp\Build\LB3_Rundll32_pass.dll

C:\Users\Admin\AppData\Local\Temp\builder.exe

builder -type enc -ref -pubkey C:\Users\Admin\AppData\Local\Temp\Build\pub.key -config config.json -ofile C:\Users\Admin\AppData\Local\Temp\Build\LB3_ReflectiveDll_DllMain.dll

Network

N/A

Files

memory/1880-54-0x0000000000000000-mapping.dmp

memory/1880-55-0x0000000076201000-0x0000000076203000-memory.dmp

memory/888-56-0x0000000000000000-mapping.dmp

C:\Users\Admin\AppData\Local\Temp\Build\priv.key

MD5 9c6713d91fce8d362e153920cb54d680
SHA1 391688f633caa3415f44f8e85e7e8e8a1d4ee546
SHA256 78da53378038810e74479ec7c585fa264e28374a05ce15d8c4afa03dff8b9ab2
SHA512 1b020f84b7ebaa3154852cbb4a76b356a2a17c1086988ee768bc111f40dc9cc8fe44f38afbd3bdb8cdaf84c5000b477053d16ea247ec050c64f9552e24fc26b9

memory/980-59-0x0000000000000000-mapping.dmp

C:\Users\Admin\AppData\Local\Temp\Build\pub.key

MD5 d3a3eb387902df4e720d0cb32df4f578
SHA1 4c8221097027d7c97e4a9779f71db381fad01e7f
SHA256 c571075e86d3c04f89e96847fac20e8867e3a6ff7a6d03d424f6cb9941fc4afd
SHA512 e92ddc8a1b2ca30f71a9885cb32755525ab7d1a607c4c3e0a20975c106b8bd91a28d24876315f229aba4cd1f5ae86c8cdc549a719c0c0d6396d0794e1d3c5af0

memory/1752-62-0x0000000000000000-mapping.dmp

memory/2040-64-0x0000000000000000-mapping.dmp

memory/1484-66-0x0000000000000000-mapping.dmp

memory/1992-68-0x0000000000000000-mapping.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2022-09-21 11:16

Reported

2022-09-21 11:27

Platform

win10v2004-20220812-en

Max time kernel

90s

Max time network

144s

Command Line

C:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\Build.bat"

Signatures

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1740 wrote to memory of 5024 N/A C:\Windows\system32\cmd.exe C:\Users\Admin\AppData\Local\Temp\keygen.exe
PID 1740 wrote to memory of 5024 N/A C:\Windows\system32\cmd.exe C:\Users\Admin\AppData\Local\Temp\keygen.exe
PID 1740 wrote to memory of 5024 N/A C:\Windows\system32\cmd.exe C:\Users\Admin\AppData\Local\Temp\keygen.exe
PID 1740 wrote to memory of 1464 N/A C:\Windows\system32\cmd.exe C:\Users\Admin\AppData\Local\Temp\builder.exe
PID 1740 wrote to memory of 1464 N/A C:\Windows\system32\cmd.exe C:\Users\Admin\AppData\Local\Temp\builder.exe
PID 1740 wrote to memory of 1464 N/A C:\Windows\system32\cmd.exe C:\Users\Admin\AppData\Local\Temp\builder.exe
PID 1740 wrote to memory of 4108 N/A C:\Windows\system32\cmd.exe C:\Users\Admin\AppData\Local\Temp\builder.exe
PID 1740 wrote to memory of 4108 N/A C:\Windows\system32\cmd.exe C:\Users\Admin\AppData\Local\Temp\builder.exe
PID 1740 wrote to memory of 4108 N/A C:\Windows\system32\cmd.exe C:\Users\Admin\AppData\Local\Temp\builder.exe
PID 1740 wrote to memory of 4504 N/A C:\Windows\system32\cmd.exe C:\Users\Admin\AppData\Local\Temp\builder.exe
PID 1740 wrote to memory of 4504 N/A C:\Windows\system32\cmd.exe C:\Users\Admin\AppData\Local\Temp\builder.exe
PID 1740 wrote to memory of 4504 N/A C:\Windows\system32\cmd.exe C:\Users\Admin\AppData\Local\Temp\builder.exe
PID 1740 wrote to memory of 4800 N/A C:\Windows\system32\cmd.exe C:\Users\Admin\AppData\Local\Temp\builder.exe
PID 1740 wrote to memory of 4800 N/A C:\Windows\system32\cmd.exe C:\Users\Admin\AppData\Local\Temp\builder.exe
PID 1740 wrote to memory of 4800 N/A C:\Windows\system32\cmd.exe C:\Users\Admin\AppData\Local\Temp\builder.exe
PID 1740 wrote to memory of 3388 N/A C:\Windows\system32\cmd.exe C:\Users\Admin\AppData\Local\Temp\builder.exe
PID 1740 wrote to memory of 3388 N/A C:\Windows\system32\cmd.exe C:\Users\Admin\AppData\Local\Temp\builder.exe
PID 1740 wrote to memory of 3388 N/A C:\Windows\system32\cmd.exe C:\Users\Admin\AppData\Local\Temp\builder.exe
PID 1740 wrote to memory of 1560 N/A C:\Windows\system32\cmd.exe C:\Users\Admin\AppData\Local\Temp\builder.exe
PID 1740 wrote to memory of 1560 N/A C:\Windows\system32\cmd.exe C:\Users\Admin\AppData\Local\Temp\builder.exe
PID 1740 wrote to memory of 1560 N/A C:\Windows\system32\cmd.exe C:\Users\Admin\AppData\Local\Temp\builder.exe

Processes

C:\Windows\system32\cmd.exe

C:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\Build.bat"

C:\Users\Admin\AppData\Local\Temp\keygen.exe

keygen -path C:\Users\Admin\AppData\Local\Temp\Build -pubkey pub.key -privkey priv.key

C:\Users\Admin\AppData\Local\Temp\builder.exe

builder -type dec -privkey C:\Users\Admin\AppData\Local\Temp\Build\priv.key -config config.json -ofile C:\Users\Admin\AppData\Local\Temp\Build\LB3Decryptor.exe

C:\Users\Admin\AppData\Local\Temp\builder.exe

builder -type enc -exe -pubkey C:\Users\Admin\AppData\Local\Temp\Build\pub.key -config config.json -ofile C:\Users\Admin\AppData\Local\Temp\Build\LB3.exe

C:\Users\Admin\AppData\Local\Temp\builder.exe

builder -type enc -exe -pass -pubkey C:\Users\Admin\AppData\Local\Temp\Build\pub.key -config config.json -ofile C:\Users\Admin\AppData\Local\Temp\Build\LB3_pass.exe

C:\Users\Admin\AppData\Local\Temp\builder.exe

builder -type enc -dll -pubkey C:\Users\Admin\AppData\Local\Temp\Build\pub.key -config config.json -ofile C:\Users\Admin\AppData\Local\Temp\Build\LB3_Rundll32.dll

C:\Users\Admin\AppData\Local\Temp\builder.exe

builder -type enc -dll -pass -pubkey C:\Users\Admin\AppData\Local\Temp\Build\pub.key -config config.json -ofile C:\Users\Admin\AppData\Local\Temp\Build\LB3_Rundll32_pass.dll

C:\Users\Admin\AppData\Local\Temp\builder.exe

builder -type enc -ref -pubkey C:\Users\Admin\AppData\Local\Temp\Build\pub.key -config config.json -ofile C:\Users\Admin\AppData\Local\Temp\Build\LB3_ReflectiveDll_DllMain.dll

Network

Country Destination Domain Proto
US 93.184.220.29:80 tcp
NL 104.110.191.140:80 tcp
FR 40.79.150.121:443 tcp
NL 178.79.208.1:80 tcp
NL 178.79.208.1:80 tcp
NL 178.79.208.1:80 tcp

Files

memory/5024-132-0x0000000000000000-mapping.dmp

memory/1464-133-0x0000000000000000-mapping.dmp

C:\Users\Admin\AppData\Local\Temp\Build\priv.key

MD5 c60341671847a470bd295ffdff9222b1
SHA1 feb9a285b8f95a636a50588855f21fdd29a31c96
SHA256 abb21d951095eba69c4a1c1fd2603cdfcafd03741943830c7f3899826c8043e0
SHA512 c34442b4fc5aa7c75ef5bad7316c8ec94a7949fb5b187c425c9c78e795d58f40e925076282b79e9d0019ba00e1c0f5ddd721b2b3d824a8fefc98190cc5600723

memory/4108-135-0x0000000000000000-mapping.dmp

C:\Users\Admin\AppData\Local\Temp\Build\pub.key

MD5 ada2f85195a0b22df2e6f69bda9ed7be
SHA1 3783cd707a7b8d735e5c79dac663bc5695dca005
SHA256 6998e6d1ab5f6eb71b2bd7c98a0b6a587e172931b03f945883902de185f06584
SHA512 ad3da7aed952486080ac401bde33b48f8a81352b68207d4355ee9fed72a62410e24f24c9c115107c22f3223256e2da4eb33cbda01c0f7ca7c2b04cf85e67bc14

memory/4504-137-0x0000000000000000-mapping.dmp

memory/4800-138-0x0000000000000000-mapping.dmp

memory/3388-139-0x0000000000000000-mapping.dmp

memory/1560-140-0x0000000000000000-mapping.dmp

Analysis: behavioral3

Detonation Overview

Submitted

2022-09-21 11:16

Reported

2022-09-21 11:27

Platform

win7-20220812-en

Max time kernel

42s

Max time network

45s

Command Line

"C:\Users\Admin\AppData\Local\Temp\builder.exe"

Signatures

N/A

Processes

C:\Users\Admin\AppData\Local\Temp\builder.exe

"C:\Users\Admin\AppData\Local\Temp\builder.exe"

Network

N/A

Files

memory/1280-54-0x0000000075811000-0x0000000075813000-memory.dmp

Analysis: behavioral4

Detonation Overview

Submitted

2022-09-21 11:16

Reported

2022-09-21 11:27

Platform

win10v2004-20220812-en

Max time kernel

114s

Max time network

133s

Command Line

"C:\Users\Admin\AppData\Local\Temp\builder.exe"

Signatures

N/A

Processes

C:\Users\Admin\AppData\Local\Temp\builder.exe

"C:\Users\Admin\AppData\Local\Temp\builder.exe"

Network

Country Destination Domain Proto
US 209.197.3.8:80 tcp
US 209.197.3.8:80 tcp
US 209.197.3.8:80 tcp
US 209.197.3.8:80 tcp
US 209.197.3.8:80 tcp
NL 104.80.225.205:443 tcp

Files

N/A

Analysis: behavioral5

Detonation Overview

Submitted

2022-09-21 11:16

Reported

2022-09-21 11:27

Platform

win7-20220901-en

Max time kernel

45s

Max time network

49s

Command Line

"C:\Users\Admin\AppData\Local\Temp\keygen.exe"

Signatures

N/A

Processes

C:\Users\Admin\AppData\Local\Temp\keygen.exe

"C:\Users\Admin\AppData\Local\Temp\keygen.exe"

Network

N/A

Files

memory/1492-54-0x0000000076BA1000-0x0000000076BA3000-memory.dmp