berbew | 4b65f9af44312c274420a5bcd3707a4e1b062e81d71cb7912e511a97fd6d9541

General

Target

4b65f9af44312c274420a5bcd3707a4e1b062e81d71cb7912e511a97fd6d9541N.exe
Size

64KB
MD5

e21a7e058157919197197c8714ddbd70
SHA1

8b09e6a57758ddceb4779591fa5bc789a777b410
SHA256

4b65f9af44312c274420a5bcd3707a4e1b062e81d71cb7912e511a97fd6d9541
SHA512

5ae9e5b0baed92930b4b42d1e8695e494d39e5e94e580b1fe540ebc1364b5c8837302a11c2b0f48cfe91a0849632b6b6d06087084377aa34014c237781f5a519
SSDEEP

1536:PJ3vJ/bfry9HuuWvwY0lq9lLBsLnVLdGUHyNwW:5Vb+JuuWr0E9lLBsLnVUUHyNwW

Score

10^/10

berbew backdoor discovery persistence

Malware Config

Extracted

Family

berbew

C2

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

http://tat-neftbank.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	4b65f9af44312c274420a5bcd3707a4e1b062e81d71cb7912e511a97fd6d9541N.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\ShellServiceObjectDelayLoad\Web Event Logger = "{79FEACFF-FFCE-815E-A900-316290B5B738}"	4b65f9af44312c274420a5bcd3707a4e1b062e81d71cb7912e511a97fd6d9541N.exe

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

Executes dropped EXE 1 IoCs

pid	Process
2684	Nlhgoqhh.exe

Loads dropped DLL 6 IoCs

pid	Process
2172	4b65f9af44312c274420a5bcd3707a4e1b062e81d71cb7912e511a97fd6d9541N.exe
2172	4b65f9af44312c274420a5bcd3707a4e1b062e81d71cb7912e511a97fd6d9541N.exe
2940	WerFault.exe
2940	WerFault.exe
2940	WerFault.exe
2940	WerFault.exe

Drops file in System32 directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\Nlhgoqhh.exe	4b65f9af44312c274420a5bcd3707a4e1b062e81d71cb7912e511a97fd6d9541N.exe
File created	C:\Windows\SysWOW64\Lamajm32.dll	4b65f9af44312c274420a5bcd3707a4e1b062e81d71cb7912e511a97fd6d9541N.exe
File created	C:\Windows\SysWOW64\Nlhgoqhh.exe	4b65f9af44312c274420a5bcd3707a4e1b062e81d71cb7912e511a97fd6d9541N.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2940	2684	WerFault.exe	30

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	4b65f9af44312c274420a5bcd3707a4e1b062e81d71cb7912e511a97fd6d9541N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Nlhgoqhh.exe

Modifies registry class 6 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{79FEACFF-FFCE-815E-A900-316290B5B738}\InProcServer32\ThreadingModel = "Apartment"	4b65f9af44312c274420a5bcd3707a4e1b062e81d71cb7912e511a97fd6d9541N.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{79FEACFF-FFCE-815E-A900-316290B5B738}\InProcServer32	4b65f9af44312c274420a5bcd3707a4e1b062e81d71cb7912e511a97fd6d9541N.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node	4b65f9af44312c274420a5bcd3707a4e1b062e81d71cb7912e511a97fd6d9541N.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID	4b65f9af44312c274420a5bcd3707a4e1b062e81d71cb7912e511a97fd6d9541N.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{79FEACFF-FFCE-815E-A900-316290B5B738}	4b65f9af44312c274420a5bcd3707a4e1b062e81d71cb7912e511a97fd6d9541N.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{79FEACFF-FFCE-815E-A900-316290B5B738}\InProcServer32\ = "C:\\Windows\\SysWow64\\Lamajm32.dll"	4b65f9af44312c274420a5bcd3707a4e1b062e81d71cb7912e511a97fd6d9541N.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2172 wrote to memory of 2684	2172	4b65f9af44312c274420a5bcd3707a4e1b062e81d71cb7912e511a97fd6d9541N.exe	30
PID 2172 wrote to memory of 2684	2172	4b65f9af44312c274420a5bcd3707a4e1b062e81d71cb7912e511a97fd6d9541N.exe	30
PID 2172 wrote to memory of 2684	2172	4b65f9af44312c274420a5bcd3707a4e1b062e81d71cb7912e511a97fd6d9541N.exe	30
PID 2172 wrote to memory of 2684	2172	4b65f9af44312c274420a5bcd3707a4e1b062e81d71cb7912e511a97fd6d9541N.exe	30
PID 2684 wrote to memory of 2940	2684	Nlhgoqhh.exe	31
PID 2684 wrote to memory of 2940	2684	Nlhgoqhh.exe	31
PID 2684 wrote to memory of 2940	2684	Nlhgoqhh.exe	31
PID 2684 wrote to memory of 2940	2684	Nlhgoqhh.exe	31

C:\Users\Admin\AppData\Local\Temp\4b65f9af44312c274420a5bcd3707a4e1b062e81d71cb7912e511a97fd6d9541N.exe
"C:\Users\Admin\AppData\Local\Temp\4b65f9af44312c274420a5bcd3707a4e1b062e81d71cb7912e511a97fd6d9541N.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:2172
- C:\Windows\SysWOW64\Nlhgoqhh.exe
  C:\Windows\system32\Nlhgoqhh.exe
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2684
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2684 -s 140
    3⤵
    - Loads dropped DLL
    - Program crash
    PID:2940

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\Nlhgoqhh.exe

Filesize
64KB

MD5
fa731ca1ec300085c391b1c531b1d986

SHA1
406580c8b1f0f6e6cb8fdfe5a65a867c6e524d43

SHA256
33dce401f50ae826c2c571765bbb6f8e36d70c270e20e5db681193709bef5524

SHA512
cfad96182038135e3dc0aeba15df16a31b147da39a15607e9c663d506e6ecd135860eda0242c8a92d37c9de31a799acde25f8a127f68db1910834355c09fc46b

Download Submit
memory/2172-0-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2172-13-0x00000000002D0000-0x00000000002FF000-memory.dmp

Filesize
188KB

Download
memory/2172-12-0x00000000002D0000-0x00000000002FF000-memory.dmp

Filesize
188KB

Download
memory/2172-20-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2684-14-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2684-19-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads