bumblebee | da2b5721da210937936fff0991248b7e4acc5f15a3dcbaccca28705404f2ae05

Analysis

max time kernel
101s
max time network
102s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
19-01-2023 16:38

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General

Target

Article.bat
Size

2KB
MD5

1125f24c48e34f0bc7544ad81f890504
SHA1

c155043c586f26f2c778725e410a69127e5e3ee4
SHA256

cccb4f9ab30b6a7f63f1934b99dde29905b3ea4138e5701ea3d349ef83115de8
SHA512

50d6e6c3b473ca7aa397cc73c47ad930be66a1fc9f305db6a64542b8b58944b35546628447fe91fc5b0852fd63d65ad17d36899d0acf2a0e06639f7a36f2e07c

Score

10^/10

bumblebee 0812 trojan

Malware Config

Extracted

Family

bumblebee

Botnet

0812

86.106.87.135:443

51.83.248.182:443

23.82.128.116:443

rc4.plain

Signatures

BumbleBee
BumbleBee is a webshell malware written in C++.
trojan bumblebee

Executes dropped EXE 1 IoCs

pid	Process
4984	KIH0o7s0zWO1hL.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation	cmd.exe

Loads dropped DLL 1 IoCs

pid	Process
4984	KIH0o7s0zWO1hL.exe

Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

pid	Process
4984	KIH0o7s0zWO1hL.exe

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

System Information Discovery
T1082

Creates scheduled task(s) 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence

Scheduled Task

T1053

pid	Process
3480	schtasks.exe

Kills process with taskkill 1 IoCs

evasion

pid	Process
1960	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1960	taskkill.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 4716 wrote to memory of 4584	4716	cmd.exe	80
PID 4716 wrote to memory of 4584	4716	cmd.exe	80
PID 4716 wrote to memory of 2944	4716	cmd.exe	81
PID 4716 wrote to memory of 2944	4716	cmd.exe	81
PID 4716 wrote to memory of 4984	4716	cmd.exe	82
PID 4716 wrote to memory of 4984	4716	cmd.exe	82
PID 4716 wrote to memory of 3480	4716	cmd.exe	84
PID 4716 wrote to memory of 3480	4716	cmd.exe	84
PID 4716 wrote to memory of 1960	4716	cmd.exe	85
PID 4716 wrote to memory of 1960	4716	cmd.exe	85

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\Article.bat"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4716
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /K copy /y /b C:\Windows\System32\rundll32.exe C:\ProgramData\KIH0o7s0zWO1hL.exe
  2⤵
  PID:4584
- C:\Windows\system32\xcopy.exe
  xcopy /h /y storage.dll C:\ProgramData
  2⤵
  PID:2944
- C:\ProgramData\KIH0o7s0zWO1hL.exe
  "C:\ProgramData\KIH0o7s0zWO1hL.exe" C:\ProgramData\storage.dll,InitMainPath
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious use of NtCreateThreadExHideFromDebugger
  PID:4984
- C:\Windows\system32\schtasks.exe
  SCHTASKS /create /tn "NetworkStat" /f /tr "cmd.exe /c C:\programdata\KIH0o7s0zWO1hL.exe C:\programdata\storage.dll,InitMainPath" /sc hourly /mo 1 /sd 01/01/2022 /st 00:00
  2⤵
  - Creates scheduled task(s)
  PID:3480
- C:\Windows\system32\taskkill.exe
  taskkill /F /im cmd.exe
  2⤵
  - Kills process with taskkill
  - Suspicious use of AdjustPrivilegeToken
  PID:1960

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

T1053

Persistence

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\ProgramData\KIH0o7s0zWO1hL.exe

Filesize
70KB

MD5
ef3179d498793bf4234f708d3be28633

SHA1
dd399ae46303343f9f0da189aee11c67bd868222

SHA256
b53f3c0cd32d7f20849850768da6431e5f876b7bfa61db0aa0700b02873393fa

SHA512
02aff154762d7e53e37754f878ce6aa3f4df5a1eb167e27f13d9762dced32bec892bfa3f3314e3c6dce5998f7d3c400d7d0314b9326eedcab72207c60b3d332e

Download Submit
C:\ProgramData\KIH0o7s0zWO1hL.exe

Filesize
70KB

MD5
ef3179d498793bf4234f708d3be28633

SHA1
dd399ae46303343f9f0da189aee11c67bd868222

SHA256
b53f3c0cd32d7f20849850768da6431e5f876b7bfa61db0aa0700b02873393fa

SHA512
02aff154762d7e53e37754f878ce6aa3f4df5a1eb167e27f13d9762dced32bec892bfa3f3314e3c6dce5998f7d3c400d7d0314b9326eedcab72207c60b3d332e

Download Submit
C:\ProgramData\storage.dll

Filesize
1.5MB

MD5
a9af7ea12a65c448f23e591416118c44

SHA1
573d94055a4318e7588e3e226f34d09c696e1902

SHA256
6361f2ba78f49ebdcfc8970ed581fc0f4764f7a03cb5c8a0362c59e05c4b51e6

SHA512
d47d00511389d8acd5654572631c669c2d83ce9b5dd6b78d09cd36ce95eee5275931939f2bdd7c0c84b08a427c30051440e43ca8b5a29245ac8e77c2bf4f6c97

Download Submit
C:\ProgramData\storage.dll

Filesize
1.5MB

MD5
a9af7ea12a65c448f23e591416118c44

SHA1
573d94055a4318e7588e3e226f34d09c696e1902

SHA256
6361f2ba78f49ebdcfc8970ed581fc0f4764f7a03cb5c8a0362c59e05c4b51e6

SHA512
d47d00511389d8acd5654572631c669c2d83ce9b5dd6b78d09cd36ce95eee5275931939f2bdd7c0c84b08a427c30051440e43ca8b5a29245ac8e77c2bf4f6c97

Download Submit
memory/4984-141-0x000001FF2B4F0000-0x000001FF2B639000-memory.dmp

Filesize
1.3MB

Download
memory/4984-142-0x000001FF2B300000-0x000001FF2B375000-memory.dmp

Filesize
468KB

Download

Analysis

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General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads