bumblebee | b34459452ccc6dc19b432455779d3c881926f202d93158e846f94d979e9361e7

Analysis

max time kernel
144s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
09/11/2022, 13:32

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General

Target

newfile111.xlsm
Size

56KB
MD5

cd67efd2d67af651b798ef6e345399de
SHA1

cd83b6f54770e1a856852c153800cca0a5d84bce
SHA256

b34459452ccc6dc19b432455779d3c881926f202d93158e846f94d979e9361e7
SHA512

39749837c3b4c7d224db7e6d81e71401f3b9376c743956b9c3fc4f098276f42a50488db971587a8c193832524a372844ec5e1929ea8afd599acbded314a845af
SSDEEP

768:KtntW3gxWpt1J3S5f3v4Jfa3ODVs3KnooaRHIuZVvFn8+5/LNSlC10MoE:itfxWLC5/wJi3eVsdtLVv15/9foE

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	3168	3836	rundll32.exe	79

Downloads MZ/PE file

Loads dropped DLL 1 IoCs

pid	Process
3168	rundll32.exe

Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

pid	Process
3168	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 value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	EXCEL.EXE
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	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
3836	EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

pid	Process
3836	EXCEL.EXE
3836	EXCEL.EXE
3836	EXCEL.EXE
3836	EXCEL.EXE
3836	EXCEL.EXE
3836	EXCEL.EXE
3836	EXCEL.EXE
3836	EXCEL.EXE
3836	EXCEL.EXE
3836	EXCEL.EXE
3836	EXCEL.EXE
3836	EXCEL.EXE

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 3836 wrote to memory of 3168	3836	EXCEL.EXE	89
PID 3836 wrote to memory of 3168	3836	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\newfile111.xlsm"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3836
- C:\Windows\SYSTEM32\rundll32.exe
  rundll32 name.dll,SendData
  2⤵
  - Process spawned unexpected child process
  - Loads dropped DLL
  - Suspicious use of NtCreateThreadExHideFromDebugger
  PID:3168

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
992KB

MD5
625105a4360a1c57262d5e1abf589ba2

SHA1
ee10289a0b6e2fbc01680ebd78affd4e91508a6e

SHA256
0381eadbd30718d4d57ec54a9ee9f5113df770a24b9017e9b16a0e0804c86ec7

SHA512
1a74224b8ae6361715e5e98aac1e5fa1bef1047289588b732e0b8854ea967b21ba3bb60ec906276e4c1e89041dfade19482cc4a49a90aec6922434cd81b326f9

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

Filesize
992KB

MD5
625105a4360a1c57262d5e1abf589ba2

SHA1
ee10289a0b6e2fbc01680ebd78affd4e91508a6e

SHA256
0381eadbd30718d4d57ec54a9ee9f5113df770a24b9017e9b16a0e0804c86ec7

SHA512
1a74224b8ae6361715e5e98aac1e5fa1bef1047289588b732e0b8854ea967b21ba3bb60ec906276e4c1e89041dfade19482cc4a49a90aec6922434cd81b326f9

Download Submit
memory/3168-142-0x0000024346B70000-0x0000024346CB9000-memory.dmp

Filesize
1.3MB

Download
memory/3168-143-0x0000024345020000-0x0000024345096000-memory.dmp

Filesize
472KB

Download
memory/3836-132-0x00007FF7F2C90000-0x00007FF7F2CA0000-memory.dmp

Filesize
64KB

Download
memory/3836-134-0x00007FF7F2C90000-0x00007FF7F2CA0000-memory.dmp

Filesize
64KB

Download
memory/3836-133-0x00007FF7F2C90000-0x00007FF7F2CA0000-memory.dmp

Filesize
64KB

Download
memory/3836-135-0x00007FF7F2C90000-0x00007FF7F2CA0000-memory.dmp

Filesize
64KB

Download
memory/3836-136-0x00007FF7F2C90000-0x00007FF7F2CA0000-memory.dmp

Filesize
64KB

Download
memory/3836-137-0x00007FF7F0330000-0x00007FF7F0340000-memory.dmp

Filesize
64KB

Download
memory/3836-138-0x00007FF7F0330000-0x00007FF7F0340000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads