b309a78397703590a11e275f3a1c8575eb254b68639389b67993a9549bf8ac03

General

Target

406fd4de02eadbcfddaea9a6d51f1f90_NEAS.exe
Size

749KB
MD5

406fd4de02eadbcfddaea9a6d51f1f90
SHA1

2ab8ecbfe3819a9de425d51f5a876f6a0dc8edfb
SHA256

b309a78397703590a11e275f3a1c8575eb254b68639389b67993a9549bf8ac03
SHA512

5b74d04f37ce9a7d1dc6baf5309a33654c9b96b09ec4e11085f1c53a2ca7078e13801e67e1632e1e51f22aafef22e455678aa2b215e2c2ec6bcad6b31426e165
SSDEEP

12288:pYIW0p98Oh8P7h8d2qWVTC0MwsHkNQ7NLlgjOETn4/5BWpUohOqnDMsMbol/XPRT:dW298E8uN0CHk+7NLlgjOETn4/5BWpUm

Score

10^/10

Malware Config

Signatures

Malware Dropper & Backdoor - Berbew 1 IoCs

Berbew is a backdoor Trojan malware with capabilities to download and install a range of additional malicious software, such as other Trojans, ransomware, and cryptominers.

backdoor trojan dropper

resource	yara_rule
behavioral2/files/0x000d000000023b24-2.dat	family_berbew

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-1-5-21-877519540-908060166-1852957295-1000\Control Panel\International\Geo\Nation	3A2A.tmp

Executes dropped EXE 1 IoCs

pid	Process
4332	3A2A.tmp

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Checks processor information in registry 2 TTPs 3 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	WINWORD.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	WINWORD.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	WINWORD.EXE

Enumerates system info in registry 2 TTPs 3 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	WINWORD.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily	WINWORD.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	WINWORD.EXE

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-877519540-908060166-1852957295-1000_Classes\Local Settings	3A2A.tmp

Suspicious behavior: AddClipboardFormatListener 2 IoCs

pid	Process
3224	WINWORD.EXE
3224	WINWORD.EXE

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
4332	3A2A.tmp

Suspicious use of SetWindowsHookEx 9 IoCs

pid	Process
3224	WINWORD.EXE
3224	WINWORD.EXE
3224	WINWORD.EXE
3224	WINWORD.EXE
3224	WINWORD.EXE
3224	WINWORD.EXE
3224	WINWORD.EXE
3224	WINWORD.EXE
3224	WINWORD.EXE

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 3704 wrote to memory of 4332	3704	406fd4de02eadbcfddaea9a6d51f1f90_NEAS.exe	83
PID 3704 wrote to memory of 4332	3704	406fd4de02eadbcfddaea9a6d51f1f90_NEAS.exe	83
PID 3704 wrote to memory of 4332	3704	406fd4de02eadbcfddaea9a6d51f1f90_NEAS.exe	83
PID 4332 wrote to memory of 3224	4332	3A2A.tmp	89
PID 4332 wrote to memory of 3224	4332	3A2A.tmp	89

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012
Uses Volume Shadow Copy WMI provider
The Volume Shadow Copy service is used to manage backups/snapshots.
ransomware
Uses Volume Shadow Copy service COM API
The Volume Shadow Copy service is used to manage backups/snapshots.
ransomware

C:\Users\Admin\AppData\Local\Temp\406fd4de02eadbcfddaea9a6d51f1f90_NEAS.exe
"C:\Users\Admin\AppData\Local\Temp\406fd4de02eadbcfddaea9a6d51f1f90_NEAS.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:3704
- C:\Users\Admin\AppData\Local\Temp\3A2A.tmp
  "C:\Users\Admin\AppData\Local\Temp\3A2A.tmp" --pingC:\Users\Admin\AppData\Local\Temp\406fd4de02eadbcfddaea9a6d51f1f90_NEAS.exe E8BA345EA48A612ED42842236FEBAA56C8E7A8BF89750885F0A5F48DF10DCD613B74B8450945659F24E2BCB40134F71B0A38237A2928643FD24F963AF3E9E3A2
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  - Modifies registry class
  - Suspicious behavior: RenamesItself
  - Suspicious use of WriteProcessMemory
  PID:4332
- - C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE
    "C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE" /n "C:\Users\Admin\AppData\Local\Temp\406fd4de02eadbcfddaea9a6d51f1f90_NEAS.docx" /o ""
    3⤵
    - Checks processor information in registry
    - Enumerates system info in registry
    - Suspicious behavior: AddClipboardFormatListener
    - Suspicious use of SetWindowsHookEx
    PID:3224

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

4

T1012

System Information Discovery

4

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\3A2A.tmp

Filesize
749KB

MD5
c068f4999c8287da1be8a35e12038d67

SHA1
9129f8355614b979af63166b4b7a9c64384d5aee

SHA256
628f1ac2071d2e4d14b13ec8e3c2e70725a86c7e2f294197595e7972e2e39ba8

SHA512
05409a8701a6f038e55be6c9498f83e34f83368ff12b327544be89113bd8a5c1c2a6c752744ffbde18a3ecb5ce3fdf560e6d2260161865e39506c82fbeefbe57

Download Submit
C:\Users\Admin\AppData\Local\Temp\406fd4de02eadbcfddaea9a6d51f1f90_NEAS.docx

Filesize
21KB

MD5
7079891932a64f097abafd233055a1e9

SHA1
246d95feafe67689d49a5a4cadba18d3ac1914e5

SHA256
c97189b50e5e92be09966d4732b6d61a2e435b2935d60c09989e555ae442e7a1

SHA512
6e9ee6427d7cc2474dc634b088cf3f35d06dfb734d2b63fbbc794f4083b4b5754379daff4804bf5024b1b430aa5e50fa6d839d3473ceeed3043d373c85e9862a

Download Submit
memory/3224-9-0x00007FFD81410000-0x00007FFD81420000-memory.dmp

Filesize
64KB

Download
memory/3224-12-0x00007FFDC142D000-0x00007FFDC142E000-memory.dmp

Filesize
4KB

Download
memory/3224-11-0x00007FFD81410000-0x00007FFD81420000-memory.dmp

Filesize
64KB

Download
memory/3224-10-0x00007FFD81410000-0x00007FFD81420000-memory.dmp

Filesize
64KB

Download
memory/3224-14-0x00007FFD81410000-0x00007FFD81420000-memory.dmp

Filesize
64KB

Download
memory/3224-13-0x00007FFD81410000-0x00007FFD81420000-memory.dmp

Filesize
64KB

Download
memory/3224-16-0x00007FFDC1390000-0x00007FFDC1585000-memory.dmp

Filesize
2.0MB

Download
memory/3224-15-0x00007FFDC1390000-0x00007FFDC1585000-memory.dmp

Filesize
2.0MB

Download
memory/3224-17-0x00007FFDC1390000-0x00007FFDC1585000-memory.dmp

Filesize
2.0MB

Download
memory/3224-22-0x00007FFDC1390000-0x00007FFDC1585000-memory.dmp

Filesize
2.0MB

Download
memory/3224-23-0x00007FFDC1390000-0x00007FFDC1585000-memory.dmp

Filesize
2.0MB

Download
memory/3224-21-0x00007FFDC1390000-0x00007FFDC1585000-memory.dmp

Filesize
2.0MB

Download
memory/3224-24-0x00007FFD7F3B0000-0x00007FFD7F3C0000-memory.dmp

Filesize
64KB

Download
memory/3224-20-0x00007FFDC1390000-0x00007FFDC1585000-memory.dmp

Filesize
2.0MB

Download
memory/3224-19-0x00007FFDC1390000-0x00007FFDC1585000-memory.dmp

Filesize
2.0MB

Download
memory/3224-27-0x00007FFDC1390000-0x00007FFDC1585000-memory.dmp

Filesize
2.0MB

Download
memory/3224-26-0x00007FFDC1390000-0x00007FFDC1585000-memory.dmp

Filesize
2.0MB

Download
memory/3224-25-0x00007FFDC1390000-0x00007FFDC1585000-memory.dmp

Filesize
2.0MB

Download
memory/3224-18-0x00007FFDC1390000-0x00007FFDC1585000-memory.dmp

Filesize
2.0MB

Download
memory/3224-28-0x00007FFD7F3B0000-0x00007FFD7F3C0000-memory.dmp

Filesize
64KB

Download
memory/3224-44-0x00007FFDC1390000-0x00007FFDC1585000-memory.dmp

Filesize
2.0MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads