bumblebee | 7cf7b8e58c5955697c7de6b8d90936ba16fde52e1004c5854ad5b2a731b8a7b0

Resubmissions

11-11-2022 01:35

221111-bzzrxagac6 10

10-11-2022 13:29

221110-qrhkzscbcm 10

Analysis

max time kernel
140s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20220901-en
resource tags

arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
submitted
11-11-2022 01:35

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General

Target

newfile42.xlsm
Size

56KB
MD5

8627921983baab8f93b6150dd57f16a5
SHA1

4d17d0b708cb3545da5473b12be81d5942e8c757
SHA256

7cf7b8e58c5955697c7de6b8d90936ba16fde52e1004c5854ad5b2a731b8a7b0
SHA512

7e6a37449c5bd9a3c5c8859b6c12793c7c0a0b8234486891debbe64cca97cf1c3534912cf1bf1999e8319265d824f12eb492c469aee2917734b954713e652213
SSDEEP

768:m9xgHyxWpt1J3S5f3v4Jfa3ODVs3KnooaRHIuZVvu4hBv5FEwsE:eiyxWLC5/wJi3eVsdtLVvFhBBy/E

Score

10^/10

bumblebee 0411r trojan

Malware Config

Extracted

Family

bumblebee

Botnet

0411r

172.86.121.123:443

176.223.165.125:443

45.66.248.216:443

rc4.plain

Signatures

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

Process spawned unexpected child process 1 IoCs

This typically indicates the parent process was compromised via an exploit or macro.

description	pid	pid_target	Process	procid_target
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	4412	4868	rundll32.exe	80

Blocklisted process makes network request 1 IoCs

flow	pid	Process
56	4412	rundll32.exe

Downloads MZ/PE file

Loads dropped DLL 1 IoCs

pid	Process
4412	rundll32.exe

Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

pid	Process
4412	rundll32.exe

Checks processor information in registry 2 TTPs 3 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	EXCEL.EXE

Enumerates system info in registry 2 TTPs 3 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
4868	EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

pid	Process
4868	EXCEL.EXE
4868	EXCEL.EXE
4868	EXCEL.EXE
4868	EXCEL.EXE
4868	EXCEL.EXE
4868	EXCEL.EXE
4868	EXCEL.EXE
4868	EXCEL.EXE
4868	EXCEL.EXE
4868	EXCEL.EXE
4868	EXCEL.EXE
4868	EXCEL.EXE

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 4868 wrote to memory of 4412	4868	EXCEL.EXE	89
PID 4868 wrote to memory of 4412	4868	EXCEL.EXE	89

C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\newfile42.xlsm"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4868
- C:\Windows\SYSTEM32\rundll32.exe
  rundll32 name.dll,SendData
  2⤵
  - Process spawned unexpected child process
  - Blocklisted process makes network request
  - Loads dropped DLL
  - Suspicious use of NtCreateThreadExHideFromDebugger
  PID:4412

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

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:\Users\Admin\Documents\name.dll

Filesize
994KB

MD5
7f7efa4a8f013bffaefd5bbd24ada276

SHA1
27363f6673a5271644ace7f13decbcfc59546430

SHA256
bad4186ff9b35e5561efa8aae7a32dbde145c3b9e120ce86a522a7610f1c4e59

SHA512
6e2c58e2114cd87af1b6abcac3b04722933f6246fdbf12bf16012b6388e2d964751785e646653ddc82002e7043ce20457d550115079af8095e3508621fffcad0

Download Submit
C:\Users\Admin\Documents\name.dll

Filesize
994KB

MD5
7f7efa4a8f013bffaefd5bbd24ada276

SHA1
27363f6673a5271644ace7f13decbcfc59546430

SHA256
bad4186ff9b35e5561efa8aae7a32dbde145c3b9e120ce86a522a7610f1c4e59

SHA512
6e2c58e2114cd87af1b6abcac3b04722933f6246fdbf12bf16012b6388e2d964751785e646653ddc82002e7043ce20457d550115079af8095e3508621fffcad0

Download Submit
memory/4412-142-0x00000262A07B0000-0x00000262A08F9000-memory.dmp

Filesize
1.3MB

Download
memory/4412-143-0x00000262A05F0000-0x00000262A0666000-memory.dmp

Filesize
472KB

Download
memory/4868-132-0x00007FFFBD930000-0x00007FFFBD940000-memory.dmp

Filesize
64KB

Download
memory/4868-133-0x00007FFFBD930000-0x00007FFFBD940000-memory.dmp

Filesize
64KB

Download
memory/4868-134-0x00007FFFBD930000-0x00007FFFBD940000-memory.dmp

Filesize
64KB

Download
memory/4868-135-0x00007FFFBD930000-0x00007FFFBD940000-memory.dmp

Filesize
64KB

Download
memory/4868-136-0x00007FFFBD930000-0x00007FFFBD940000-memory.dmp

Filesize
64KB

Download
memory/4868-137-0x00007FFFBB660000-0x00007FFFBB670000-memory.dmp

Filesize
64KB

Download
memory/4868-138-0x00007FFFBB660000-0x00007FFFBB670000-memory.dmp

Filesize
64KB

Download

Resubmissions

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads