bf9dd6e5af296a3323d0f53fac5536bc7f257acf2039fce5006fb885ef95ec14

Analysis

max time kernel
142s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20231020-en
resource tags

arch:x64arch:x86image:win10v2004-20231020-enlocale:en-usos:windows10-2004-x64system
submitted
23/10/2023, 20:04

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General

Target

NEAS.fb33ccfa65989d8df4dadfb44ee31850_JC.exe
Size

162KB
MD5

fb33ccfa65989d8df4dadfb44ee31850
SHA1

65b285c6b49e357efe256bb2491abc23bb8a8da4
SHA256

bf9dd6e5af296a3323d0f53fac5536bc7f257acf2039fce5006fb885ef95ec14
SHA512

6c43b49f7b33931f808f45ce110a2377b170096828e593009286a78909dc2e6cc7a6c72c89053a1e8f39194158871194084930d6fafb966bcc7c485fdccfe073
SSDEEP

3072:xUbkqq35+8Aab54eV6oepH2QZHTlxq84yVRzS5re7p8YXN1yXRn:IlkLbGKP+hZzlxq8vRS5re7p8YXN1yXt

Score

10^/10

dropper persistence trojan

Malware Config

Signatures

Malware Backdoor - Berbew 6 IoCs

Berbew is a malware infection classified as a 'backdoor' Trojan. This malicious program's primary function is to cause chain infections - it can download/install additional malware such as other Trojans, ransomware, and cryptominers.

persistence dropper trojan

resource	yara_rule
behavioral2/memory/1140-0-0x0000000000400000-0x000000000043F000-memory.dmp	family_berbew
behavioral2/memory/1140-1-0x00000000001C0000-0x00000000001FF000-memory.dmp	family_berbew
behavioral2/files/0x0007000000022e17-10.dat	family_berbew
behavioral2/memory/4008-13-0x0000000000400000-0x000000000043F000-memory.dmp	family_berbew
behavioral2/memory/4008-14-0x00000000001B0000-0x00000000001EF000-memory.dmp	family_berbew
behavioral2/memory/4008-26-0x0000000000400000-0x000000000043F000-memory.dmp	family_berbew

Deletes itself 1 IoCs

pid	Process
4008	NEAS.fb33ccfa65989d8df4dadfb44ee31850_JC.exe

Executes dropped EXE 1 IoCs

pid	Process
4008	NEAS.fb33ccfa65989d8df4dadfb44ee31850_JC.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
1140	NEAS.fb33ccfa65989d8df4dadfb44ee31850_JC.exe

Suspicious use of UnmapMainImage 2 IoCs

pid	Process
1140	NEAS.fb33ccfa65989d8df4dadfb44ee31850_JC.exe
4008	NEAS.fb33ccfa65989d8df4dadfb44ee31850_JC.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1140 wrote to memory of 4008	1140	NEAS.fb33ccfa65989d8df4dadfb44ee31850_JC.exe	91
PID 1140 wrote to memory of 4008	1140	NEAS.fb33ccfa65989d8df4dadfb44ee31850_JC.exe	91
PID 1140 wrote to memory of 4008	1140	NEAS.fb33ccfa65989d8df4dadfb44ee31850_JC.exe	91

C:\Users\Admin\AppData\Local\Temp\NEAS.fb33ccfa65989d8df4dadfb44ee31850_JC.exe
"C:\Users\Admin\AppData\Local\Temp\NEAS.fb33ccfa65989d8df4dadfb44ee31850_JC.exe"
1⤵
- Suspicious behavior: RenamesItself
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:1140
- C:\Users\Admin\AppData\Local\Temp\NEAS.fb33ccfa65989d8df4dadfb44ee31850_JC.exe
  C:\Users\Admin\AppData\Local\Temp\NEAS.fb33ccfa65989d8df4dadfb44ee31850_JC.exe
  2⤵
  - Deletes itself
  - Executes dropped EXE
  - Suspicious use of UnmapMainImage
  PID:4008

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\NEAS.fb33ccfa65989d8df4dadfb44ee31850_JC.exe

Filesize
162KB

MD5
b58af79c7ec12934e1f95b10c9cb2c7e

SHA1
6136b6402c79eb654b3b9faa57c94b17a8e40c54

SHA256
8fb313bb1f8e7a7a63fdd0d9960b5e4b4eaa5cdf15a1bbc39d61d7c0f3ebda5b

SHA512
7700409063114b67ca64fd745a6222d2ed0665fe5f27a60c2eb230eba1dde084d6226e11aa119ba5bb772631fac73a8ab2a275d5124847ced93572e9dc9ea986

Download Submit
memory/1140-0-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/1140-1-0x00000000001C0000-0x00000000001FF000-memory.dmp

Filesize
252KB

Download
memory/1140-2-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/1140-12-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/4008-13-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/4008-14-0x00000000001B0000-0x00000000001EF000-memory.dmp

Filesize
252KB

Download
memory/4008-21-0x00000000014F0000-0x000000000150B000-memory.dmp

Filesize
108KB

Download
memory/4008-20-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/4008-26-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download