berbew | 24cdf5d6b6a968caa3f07c6ee507f1455c56aa97d549da7bb703e828399b5b34

General

Target

24cdf5d6b6a968caa3f07c6ee507f1455c56aa97d549da7bb703e828399b5b34N.exe
Size

844KB
MD5

f6a2744cec4d655785eedeec1a55cb40
SHA1

cdc0984915556c51cdafe107a1e58507d20ef420
SHA256

24cdf5d6b6a968caa3f07c6ee507f1455c56aa97d549da7bb703e828399b5b34
SHA512

b56af25313db7cf5e1e6201da155f9275a836e51a3364ba581e3e3c80ba06f03def71bacee07abeea6de1d7156f392a02c8312532ec5d5daa398b96f51e96f6f
SSDEEP

24576:ANmoH5W3TnbQihMpQnqrdX72LbY6x46uR/qYglMi:MmoH5W3TbQihw+cdX2x46uhqllMi

Score

10^/10

berbew backdoor discovery persistence

Malware Config

Extracted

Family

berbew

C2

http://f/wcmd.htm

http://f/ppslog.php

http://f/piplog.php?%s:%i:%i:%s:%09u:%i:%02d:%02d:%02d

Signatures

Adds autorun key to be loaded by Explorer.exe on startup 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\Software\Wow6432Node\Microsoft\Windows\CurrentVersion\ShellServiceObjectDelayLoad	24cdf5d6b6a968caa3f07c6ee507f1455c56aa97d549da7bb703e828399b5b34N.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\ShellServiceObjectDelayLoad\Web Event Logger = "{79FAA099-1BAE-816E-D711-115290CEE717}"	24cdf5d6b6a968caa3f07c6ee507f1455c56aa97d549da7bb703e828399b5b34N.exe

Berbew
Berbew is a backdoor written in C++.
backdoor berbew

Executes dropped EXE 1 IoCs

pid	Process
2140	Ceegmj32.exe

Loads dropped DLL 6 IoCs

pid	Process
2288	24cdf5d6b6a968caa3f07c6ee507f1455c56aa97d549da7bb703e828399b5b34N.exe
2288	24cdf5d6b6a968caa3f07c6ee507f1455c56aa97d549da7bb703e828399b5b34N.exe
2700	WerFault.exe
2700	WerFault.exe
2700	WerFault.exe
2700	WerFault.exe

Drops file in System32 directory 3 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\Aoogfhfp.dll	24cdf5d6b6a968caa3f07c6ee507f1455c56aa97d549da7bb703e828399b5b34N.exe
File created	C:\Windows\SysWOW64\Ceegmj32.exe	24cdf5d6b6a968caa3f07c6ee507f1455c56aa97d549da7bb703e828399b5b34N.exe
File opened for modification	C:\Windows\SysWOW64\Ceegmj32.exe	24cdf5d6b6a968caa3f07c6ee507f1455c56aa97d549da7bb703e828399b5b34N.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2700	2140	WerFault.exe	28

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Ceegmj32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	24cdf5d6b6a968caa3f07c6ee507f1455c56aa97d549da7bb703e828399b5b34N.exe

Modifies registry class 6 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node	24cdf5d6b6a968caa3f07c6ee507f1455c56aa97d549da7bb703e828399b5b34N.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID	24cdf5d6b6a968caa3f07c6ee507f1455c56aa97d549da7bb703e828399b5b34N.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{79FAA099-1BAE-816E-D711-115290CEE717}	24cdf5d6b6a968caa3f07c6ee507f1455c56aa97d549da7bb703e828399b5b34N.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{79FAA099-1BAE-816E-D711-115290CEE717}\InProcServer32\ = "C:\\Windows\\SysWow64\\Aoogfhfp.dll"	24cdf5d6b6a968caa3f07c6ee507f1455c56aa97d549da7bb703e828399b5b34N.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{79FAA099-1BAE-816E-D711-115290CEE717}\InProcServer32\ThreadingModel = "Apartment"	24cdf5d6b6a968caa3f07c6ee507f1455c56aa97d549da7bb703e828399b5b34N.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{79FAA099-1BAE-816E-D711-115290CEE717}\InProcServer32	24cdf5d6b6a968caa3f07c6ee507f1455c56aa97d549da7bb703e828399b5b34N.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2288 wrote to memory of 2140	2288	24cdf5d6b6a968caa3f07c6ee507f1455c56aa97d549da7bb703e828399b5b34N.exe	28
PID 2288 wrote to memory of 2140	2288	24cdf5d6b6a968caa3f07c6ee507f1455c56aa97d549da7bb703e828399b5b34N.exe	28
PID 2288 wrote to memory of 2140	2288	24cdf5d6b6a968caa3f07c6ee507f1455c56aa97d549da7bb703e828399b5b34N.exe	28
PID 2288 wrote to memory of 2140	2288	24cdf5d6b6a968caa3f07c6ee507f1455c56aa97d549da7bb703e828399b5b34N.exe	28
PID 2140 wrote to memory of 2700	2140	Ceegmj32.exe	29
PID 2140 wrote to memory of 2700	2140	Ceegmj32.exe	29
PID 2140 wrote to memory of 2700	2140	Ceegmj32.exe	29
PID 2140 wrote to memory of 2700	2140	Ceegmj32.exe	29

C:\Users\Admin\AppData\Local\Temp\24cdf5d6b6a968caa3f07c6ee507f1455c56aa97d549da7bb703e828399b5b34N.exe
"C:\Users\Admin\AppData\Local\Temp\24cdf5d6b6a968caa3f07c6ee507f1455c56aa97d549da7bb703e828399b5b34N.exe"
1⤵
- Adds autorun key to be loaded by Explorer.exe on startup
- Loads dropped DLL
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:2288
- C:\Windows\SysWOW64\Ceegmj32.exe
  C:\Windows\system32\Ceegmj32.exe
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2140
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2140 -s 140
    3⤵
    - Loads dropped DLL
    - Program crash
    PID:2700

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Windows\SysWOW64\Ceegmj32.exe

Filesize
844KB

MD5
5e82de2d7368a452eed8f1b882f7c67d

SHA1
d4063125d3b3cc18b40d8c6cbc741fe11c6ba2a8

SHA256
63b4d6b2db4b39d63a02c2efabad993d94b82fcd9fb242f34fd3d1c9f46d5ab7

SHA512
19cadfbb6c0aefe9f1de3fec9fe5921241e82a8ae0cebef13b77f6977394e152744df7dcbe3833a8ff4327271beef5f00b9339601400c953b5f716f43f4f70f9

Download Submit
memory/2140-14-0x0000000000400000-0x0000000000443000-memory.dmp

Filesize
268KB

Download
memory/2140-20-0x0000000000400000-0x0000000000443000-memory.dmp

Filesize
268KB

Download
memory/2288-0-0x0000000000400000-0x0000000000443000-memory.dmp

Filesize
268KB

Download
memory/2288-13-0x00000000002F0000-0x0000000000333000-memory.dmp

Filesize
268KB

Download
memory/2288-12-0x00000000002F0000-0x0000000000333000-memory.dmp

Filesize
268KB

Download
memory/2288-19-0x0000000000400000-0x0000000000443000-memory.dmp

Filesize
268KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads