bumblebee | 37e3e7320ef755d965f27a51a76059c124c6de5019a43c838bfb9e5ed158cc9f

General

Target

required document-98765467.img
Size

2.2MB
MD5

047cbb85d06edca7f59b76c543e0e52d
SHA1

8e98fa171813c2c05357b4c5cc0b39fd4fc9df2f
SHA256

37e3e7320ef755d965f27a51a76059c124c6de5019a43c838bfb9e5ed158cc9f
SHA512

293074598ed1fc69462b1c9cc96d5a3935d7d969d8a56d37cee89b2d2f8be770d909b64b8aba1473964697362c25c76a414000053c0c8d7ef2a2c784ba8c2c48
SSDEEP

24576:6DkZUvnqlux0IJxnJov44aUNoBOFvgcOvF9RTySFWyFS67QsnK:6w6Tuv4EoVpySsCEO

Score

10^/10

bumblebee 14lg trojan

Malware Config

Extracted

Family

bumblebee

Botnet

14lg

C2

172.86.121.56:443

172.86.121.59:443

91.245.254.97:443

rc4.plain

Signatures

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

Executes dropped EXE 1 IoCs

pid	Process
4436	foI4lOHbjKlJKR.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-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation	cmd.exe

Loads dropped DLL 1 IoCs

pid	Process
4436	foI4lOHbjKlJKR.exe

Enumerates connected drives 3 TTPs 1 IoCs

Attempts to read the root path of hard drives other than the default C: drive.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
File opened (read-only)	\??\E:	cmd.exe

Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

pid	Process
4436	foI4lOHbjKlJKR.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
3256	schtasks.exe

Kills process with taskkill 1 IoCs

evasion

pid	Process
2672	taskkill.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\Local Settings	cmd.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeManageVolumePrivilege	4960	cmd.exe
Token: SeManageVolumePrivilege	4960	cmd.exe
Token: SeDebugPrivilege	2672	taskkill.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 4824 wrote to memory of 3444	4824	cmd.exe	100
PID 4824 wrote to memory of 3444	4824	cmd.exe	100
PID 4824 wrote to memory of 2308	4824	cmd.exe	101
PID 4824 wrote to memory of 2308	4824	cmd.exe	101
PID 4824 wrote to memory of 4436	4824	cmd.exe	102
PID 4824 wrote to memory of 4436	4824	cmd.exe	102
PID 4824 wrote to memory of 3256	4824	cmd.exe	104
PID 4824 wrote to memory of 3256	4824	cmd.exe	104
PID 4824 wrote to memory of 2672	4824	cmd.exe	105
PID 4824 wrote to memory of 2672	4824	cmd.exe	105

C:\Windows\system32\cmd.exe
cmd /c "C:\Users\Admin\AppData\Local\Temp\required document-98765467.img"
1⤵
- Modifies registry class
- Suspicious use of AdjustPrivilegeToken
PID:4960

C:\Windows\System32\rundll32.exe
C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
1⤵
PID:2856

C:\Windows\System32\cmd.exe
"C:\Windows\System32\cmd.exe" /c opinions.bat
1⤵
- Checks computer location settings
- Enumerates connected drives
- Suspicious use of WriteProcessMemory
PID:4824
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /K copy /y /b C:\Windows\System32\rundll32.exe C:\ProgramData\foI4lOHbjKlJKR.exe
  2⤵
  PID:3444
- C:\Windows\system32\xcopy.exe
  xcopy /h /y policies.dll C:\ProgramData
  2⤵
  PID:2308
- C:\ProgramData\foI4lOHbjKlJKR.exe
  "C:\ProgramData\foI4lOHbjKlJKR.exe" C:\ProgramData\policies.dll,CurkpvWin
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious use of NtCreateThreadExHideFromDebugger
  PID:4436
- C:\Windows\system32\schtasks.exe
  SCHTASKS /create /tn "DesktopViewer" /f /tr "cmd.exe /c C:\programdata\foI4lOHbjKlJKR.exe C:\programdata\policies.dll,CurkpvWin" /sc hourly /mo 1 /sd 01/01/2022 /st 00:00
  2⤵
  - Creates scheduled task(s)
  PID:3256
- C:\Windows\system32\taskkill.exe
  taskkill /F /im cmd.exe
  2⤵
  - Kills process with taskkill
  - Suspicious use of AdjustPrivilegeToken
  PID:2672

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

Peripheral Device Discovery

Query Registry

System Information Discovery

3

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\ProgramData\foI4lOHbjKlJKR.exe

Filesize
70KB

MD5
ef3179d498793bf4234f708d3be28633

SHA1
dd399ae46303343f9f0da189aee11c67bd868222

SHA256
b53f3c0cd32d7f20849850768da6431e5f876b7bfa61db0aa0700b02873393fa

SHA512
02aff154762d7e53e37754f878ce6aa3f4df5a1eb167e27f13d9762dced32bec892bfa3f3314e3c6dce5998f7d3c400d7d0314b9326eedcab72207c60b3d332e

Download Submit
C:\ProgramData\foI4lOHbjKlJKR.exe

Filesize
70KB

MD5
ef3179d498793bf4234f708d3be28633

SHA1
dd399ae46303343f9f0da189aee11c67bd868222

SHA256
b53f3c0cd32d7f20849850768da6431e5f876b7bfa61db0aa0700b02873393fa

SHA512
02aff154762d7e53e37754f878ce6aa3f4df5a1eb167e27f13d9762dced32bec892bfa3f3314e3c6dce5998f7d3c400d7d0314b9326eedcab72207c60b3d332e

Download Submit
C:\ProgramData\policies.dll

Filesize
1015KB

MD5
8cc39d6695dc1db53a39bc8cd611411d

SHA1
842ce302441a3f94d82cbf33ff3515a766c6035d

SHA256
09ac0f7bde4d44ace68854f965fad27ad08037fcffc9c4f6d970c0af6a58b50b

SHA512
6f21fa303a4dd384fb3778d64a0c9c89662fb4563a093729ade12efedc9b5c7b3587979f7660efedc731f566e9f5e9abefb36fa62bd61b9b9230f1d46c8b53cf

Download Submit
C:\ProgramData\policies.dll

Filesize
1015KB

MD5
8cc39d6695dc1db53a39bc8cd611411d

SHA1
842ce302441a3f94d82cbf33ff3515a766c6035d

SHA256
09ac0f7bde4d44ace68854f965fad27ad08037fcffc9c4f6d970c0af6a58b50b

SHA512
6f21fa303a4dd384fb3778d64a0c9c89662fb4563a093729ade12efedc9b5c7b3587979f7660efedc731f566e9f5e9abefb36fa62bd61b9b9230f1d46c8b53cf

Download Submit
memory/4436-144-0x000001596AC50000-0x000001596AD99000-memory.dmp

Filesize
1.3MB

Download
memory/4436-145-0x000001596AA90000-0x000001596AB06000-memory.dmp

Filesize
472KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads