berbew | cb96e901fdd39e9517dcc847cee40f047495d132f6a07487d0abeb6fc31182d8

General

Target

cb96e901fdd39e9517dcc847cee40f047495d132f6a07487d0abeb6fc31182d8N.exe
Size

45KB
MD5

a5352b3d816bfc52cedf0c549d62cc20
SHA1

3c0a58249dc36d485cfa4b22a526725605943ab1
SHA256

cb96e901fdd39e9517dcc847cee40f047495d132f6a07487d0abeb6fc31182d8
SHA512

9e383605e05bb0e3346b30a93b0941decc68f41d958ef2f8377d372d65bdd1383936fe0702ed991958432f71e9214975bb3d1c2dc33240b00e75b2c75cea7df6
SSDEEP

768:5+6L3BGcsbnEk7Smt5VCAb/Fq05w8dvx8kyfiOKZ2EITTYjZ/1H5r:06LD+nEkl3P35p8kyqRZ2EeWTp

Score

10^/10

berbew backdoor discovery persistence

Malware Config

Extracted

Family

berbew

C2

http://tat-neftbank.ru/kkq2.php

http://luk-oil.ru/wcmd.htm

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	cb96e901fdd39e9517dcc847cee40f047495d132f6a07487d0abeb6fc31182d8N.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\ShellServiceObjectDelayLoad\Web Event Logger = "{79FEACFF-FFCE-815E-A900-316290B5B738}"	cb96e901fdd39e9517dcc847cee40f047495d132f6a07487d0abeb6fc31182d8N.exe

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

Executes dropped EXE 1 IoCs

pid	Process
2352	Bkmhnjlh.exe

Loads dropped DLL 2 IoCs

pid	Process
2316	cb96e901fdd39e9517dcc847cee40f047495d132f6a07487d0abeb6fc31182d8N.exe
2316	cb96e901fdd39e9517dcc847cee40f047495d132f6a07487d0abeb6fc31182d8N.exe

Drops file in System32 directory 3 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\Bkmhnjlh.exe	cb96e901fdd39e9517dcc847cee40f047495d132f6a07487d0abeb6fc31182d8N.exe
File opened for modification	C:\Windows\SysWOW64\Bkmhnjlh.exe	cb96e901fdd39e9517dcc847cee40f047495d132f6a07487d0abeb6fc31182d8N.exe
File created	C:\Windows\SysWOW64\Hckmla32.dll	cb96e901fdd39e9517dcc847cee40f047495d132f6a07487d0abeb6fc31182d8N.exe

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	Bkmhnjlh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cb96e901fdd39e9517dcc847cee40f047495d132f6a07487d0abeb6fc31182d8N.exe

Modifies data under HKEY_USERS 2 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\BrowseNewProcess	Bkmhnjlh.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\BrowseNewProcess\BrowseNewProcess = "yes"	Bkmhnjlh.exe

Modifies registry class 6 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{79FEACFF-FFCE-815E-A900-316290B5B738}\InProcServer32	cb96e901fdd39e9517dcc847cee40f047495d132f6a07487d0abeb6fc31182d8N.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node	cb96e901fdd39e9517dcc847cee40f047495d132f6a07487d0abeb6fc31182d8N.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID	cb96e901fdd39e9517dcc847cee40f047495d132f6a07487d0abeb6fc31182d8N.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{79FEACFF-FFCE-815E-A900-316290B5B738}	cb96e901fdd39e9517dcc847cee40f047495d132f6a07487d0abeb6fc31182d8N.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{79FEACFF-FFCE-815E-A900-316290B5B738}\InProcServer32\ = "C:\\Windows\\SysWow64\\Hckmla32.dll"	cb96e901fdd39e9517dcc847cee40f047495d132f6a07487d0abeb6fc31182d8N.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{79FEACFF-FFCE-815E-A900-316290B5B738}\InProcServer32\ThreadingModel = "Apartment"	cb96e901fdd39e9517dcc847cee40f047495d132f6a07487d0abeb6fc31182d8N.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2352	Bkmhnjlh.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2316 wrote to memory of 2352	2316	cb96e901fdd39e9517dcc847cee40f047495d132f6a07487d0abeb6fc31182d8N.exe	30
PID 2316 wrote to memory of 2352	2316	cb96e901fdd39e9517dcc847cee40f047495d132f6a07487d0abeb6fc31182d8N.exe	30
PID 2316 wrote to memory of 2352	2316	cb96e901fdd39e9517dcc847cee40f047495d132f6a07487d0abeb6fc31182d8N.exe	30
PID 2316 wrote to memory of 2352	2316	cb96e901fdd39e9517dcc847cee40f047495d132f6a07487d0abeb6fc31182d8N.exe	30

C:\Users\Admin\AppData\Local\Temp\cb96e901fdd39e9517dcc847cee40f047495d132f6a07487d0abeb6fc31182d8N.exe
"C:\Users\Admin\AppData\Local\Temp\cb96e901fdd39e9517dcc847cee40f047495d132f6a07487d0abeb6fc31182d8N.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:2316
- C:\Windows\SysWOW64\Bkmhnjlh.exe
  C:\Windows\system32\Bkmhnjlh.exe
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Modifies data under HKEY_USERS
  - Suspicious behavior: GetForegroundWindowSpam
  PID:2352

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

\Windows\SysWOW64\Bkmhnjlh.exe

Filesize
45KB

MD5
5fd2261db17ed1316bf121131d74a7f1

SHA1
ce9b98d35e4bb881d742c6d1b0480d48bec5f897

SHA256
55ef73a1fd2a6cd6e6ddd9512c6704c1f431d5286eef2b58aaf9287f458b6a3d

SHA512
e542219286775e7079bcc5286745c913fcd92fd1d17990feb6a1bfae10fa84a44af52643ff07cd659de98491542003b2d34f01523009c679e1b9c11713d4b4b0

Download Submit
memory/2316-0-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2316-12-0x00000000001E0000-0x000000000020F000-memory.dmp

Filesize
188KB

Download
memory/2316-11-0x00000000001E0000-0x000000000020F000-memory.dmp

Filesize
188KB

Download
memory/2316-16-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2352-14-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2352-17-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads