bumblebee | 3f3b2636e1e94a03d17afc81fcc51a8cf997de13efdb4100c5b066f544701223

General

Target

0dSnW/document01.lnk
Size

1KB
MD5

c6f1fecaca46ba66f28625f252db236c
SHA1

9078d131c23cdb9ca4839553b1052e12e4fc55e0
SHA256

fbaa8b0ce2175c7a36192b7d4d35b359b344a37a2c2ce1460b7393f21ac8c05a
SHA512

c741047eba96ce3596b0198d81abfa17d53a2a9dce3973ef057f1cfacea537ae13e9f51be30c8ac4d0ee93914905a881a3e498b65ee1a206821a3553a6a21462

Score

10^/10

bumblebee 0712 trojan

Malware Config

Extracted

Family

bumblebee

Botnet

0712

C2

192.254.79.122:443

139.177.146.25:443

104.219.233.145:443

rc4.plain

Signatures

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

Executes dropped EXE 1 IoCs

pid	Process
840	aMq7gB3fPYTY.exe

Checks computer location settings 2 TTPs 2 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-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation	cmd.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation	cmd.exe

Loads dropped DLL 1 IoCs

pid	Process
840	aMq7gB3fPYTY.exe

Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

pid	Process
840	aMq7gB3fPYTY.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
3296	schtasks.exe

Kills process with taskkill 1 IoCs

evasion

pid	Process
1712	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1712	taskkill.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 4740 wrote to memory of 3400	4740	cmd.exe	80
PID 4740 wrote to memory of 3400	4740	cmd.exe	80
PID 3400 wrote to memory of 3468	3400	cmd.exe	81
PID 3400 wrote to memory of 3468	3400	cmd.exe	81
PID 3400 wrote to memory of 4312	3400	cmd.exe	82
PID 3400 wrote to memory of 4312	3400	cmd.exe	82
PID 3400 wrote to memory of 840	3400	cmd.exe	83
PID 3400 wrote to memory of 840	3400	cmd.exe	83
PID 3400 wrote to memory of 3296	3400	cmd.exe	85
PID 3400 wrote to memory of 3296	3400	cmd.exe	85
PID 3400 wrote to memory of 1712	3400	cmd.exe	86
PID 3400 wrote to memory of 1712	3400	cmd.exe	86

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\0dSnW\document01.lnk
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4740
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c Page.bat
  2⤵
  - Checks computer location settings
  - Suspicious use of WriteProcessMemory
  PID:3400
- - C:\Windows\system32\cmd.exe
    C:\Windows\system32\cmd.exe /K copy /y /b C:\Windows\System32\rundll32.exe C:\ProgramData\aMq7gB3fPYTY.exe
    3⤵
    PID:3468
- - C:\Windows\system32\xcopy.exe
    xcopy /h /y aboutUs.dll C:\ProgramData
    3⤵
    PID:4312
- - C:\ProgramData\aMq7gB3fPYTY.exe
    "C:\ProgramData\aMq7gB3fPYTY.exe" C:\ProgramData\aboutUs.dll,CoReadNode
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Suspicious use of NtCreateThreadExHideFromDebugger
    PID:840
- - C:\Windows\system32\schtasks.exe
    SCHTASKS /create /tn "AppSelect" /f /tr "cmd.exe /c C:\programdata\aMq7gB3fPYTY.exe C:\programdata\aboutUs.dll,CoReadNode" /sc hourly /mo 1 /sd 01/01/2022 /st 00:00
    3⤵
    - Creates scheduled task(s)
    PID:3296
- - C:\Windows\system32\taskkill.exe
    taskkill /F /im cmd.exe
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:1712

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\ProgramData\aMq7gB3fPYTY.exe

Filesize
70KB

MD5
ef3179d498793bf4234f708d3be28633

SHA1
dd399ae46303343f9f0da189aee11c67bd868222

SHA256
b53f3c0cd32d7f20849850768da6431e5f876b7bfa61db0aa0700b02873393fa

SHA512
02aff154762d7e53e37754f878ce6aa3f4df5a1eb167e27f13d9762dced32bec892bfa3f3314e3c6dce5998f7d3c400d7d0314b9326eedcab72207c60b3d332e

Download Submit
C:\ProgramData\aMq7gB3fPYTY.exe

Filesize
70KB

MD5
ef3179d498793bf4234f708d3be28633

SHA1
dd399ae46303343f9f0da189aee11c67bd868222

SHA256
b53f3c0cd32d7f20849850768da6431e5f876b7bfa61db0aa0700b02873393fa

SHA512
02aff154762d7e53e37754f878ce6aa3f4df5a1eb167e27f13d9762dced32bec892bfa3f3314e3c6dce5998f7d3c400d7d0314b9326eedcab72207c60b3d332e

Download Submit
C:\ProgramData\aboutUs.dll

Filesize
1.5MB

MD5
829e1ae91a3362f708f6e9a9222279ed

SHA1
ae505fd299c6c75660f88c8710b00f1ab8d42766

SHA256
f70cbdde53a4bacee3410caf7666f303e6958f8d1d0fb678afbfa1093e38b4cb

SHA512
030226487b6d3ae2c53ff9729be731f692c798208e25024ea914cee14e9bfcc2edc94b31a54e355fcef93d6ee5d8c5a260b3621170a6b3b09f6553984eaf1299

Download Submit
C:\ProgramData\aboutUs.dll

Filesize
1.5MB

MD5
829e1ae91a3362f708f6e9a9222279ed

SHA1
ae505fd299c6c75660f88c8710b00f1ab8d42766

SHA256
f70cbdde53a4bacee3410caf7666f303e6958f8d1d0fb678afbfa1093e38b4cb

SHA512
030226487b6d3ae2c53ff9729be731f692c798208e25024ea914cee14e9bfcc2edc94b31a54e355fcef93d6ee5d8c5a260b3621170a6b3b09f6553984eaf1299

Download Submit
memory/840-142-0x0000020B57EE0000-0x0000020B58029000-memory.dmp

Filesize
1.3MB

Download
memory/840-143-0x0000020B57D20000-0x0000020B57D95000-memory.dmp

Filesize
468KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads