2fbb770fa3c792375c1db152fbedf0bcb0e8db645411db63c23e55c9f97584b3

Analysis

max time kernel
100s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20231020-en
resource tags

arch:x64arch:x86image:win10v2004-20231020-enlocale:en-usos:windows10-2004-x64system
submitted
05-11-2023 21:50

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General

Target

NEAS.6b820b018cbfadbbe6162a588f5e3c10.exe
Size

1.4MB
MD5

6b820b018cbfadbbe6162a588f5e3c10
SHA1

f34a183737326ca62ff62a586fe9b52a2d3f60e1
SHA256

2fbb770fa3c792375c1db152fbedf0bcb0e8db645411db63c23e55c9f97584b3
SHA512

97f32d7e1ead571c2514f66bb4a3b81f312a57b1a9738db728189359a87927980a36f28e136431102faa4410f8597fc2828945a6415dec50a20be8ab2fe91bdc
SSDEEP

12288:PKxcEeha5sAIfMiBHjVDa/ZSF1q26JHnhvMCtjW:PKc9h2n4Fa/ZSF1q26NueC

Score

10^/10

dropper persistence trojan

Malware Config

Signatures

Malware Backdoor - Berbew 5 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/4784-0-0x0000000000400000-0x00000000004F2000-memory.dmp	family_berbew
behavioral2/memory/4476-6-0x0000000000400000-0x00000000004F2000-memory.dmp	family_berbew
behavioral2/memory/4784-7-0x0000000000400000-0x00000000004F2000-memory.dmp	family_berbew
behavioral2/files/0x000a000000022df7-5.dat	family_berbew
behavioral2/memory/4476-8-0x0000000005040000-0x0000000005132000-memory.dmp	family_berbew

Deletes itself 1 IoCs

pid	Process
4476	NEAS.6b820b018cbfadbbe6162a588f5e3c10.exe

Executes dropped EXE 1 IoCs

pid	Process
4476	NEAS.6b820b018cbfadbbe6162a588f5e3c10.exe

Program crash 3 IoCs

pid	pid_target	Process	procid_target
732	4784	WerFault.exe	85
3940	4476	WerFault.exe	95
856	4476	WerFault.exe	95

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
4784	NEAS.6b820b018cbfadbbe6162a588f5e3c10.exe

Suspicious use of UnmapMainImage 1 IoCs

pid	Process
4476	NEAS.6b820b018cbfadbbe6162a588f5e3c10.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4784 wrote to memory of 4476	4784	NEAS.6b820b018cbfadbbe6162a588f5e3c10.exe	95
PID 4784 wrote to memory of 4476	4784	NEAS.6b820b018cbfadbbe6162a588f5e3c10.exe	95
PID 4784 wrote to memory of 4476	4784	NEAS.6b820b018cbfadbbe6162a588f5e3c10.exe	95

C:\Users\Admin\AppData\Local\Temp\NEAS.6b820b018cbfadbbe6162a588f5e3c10.exe
"C:\Users\Admin\AppData\Local\Temp\NEAS.6b820b018cbfadbbe6162a588f5e3c10.exe"
1⤵
- Suspicious behavior: RenamesItself
- Suspicious use of WriteProcessMemory
PID:4784
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4784 -s 344
  2⤵
  - Program crash
  PID:732
- C:\Users\Admin\AppData\Local\Temp\NEAS.6b820b018cbfadbbe6162a588f5e3c10.exe
  C:\Users\Admin\AppData\Local\Temp\NEAS.6b820b018cbfadbbe6162a588f5e3c10.exe
  2⤵
  - Deletes itself
  - Executes dropped EXE
  - Suspicious use of UnmapMainImage
  PID:4476
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4476 -s 344
    3⤵
    - Program crash
    PID:3940
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4476 -s 372
    3⤵
    - Program crash
    PID:856

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 360 -p 4784 -ip 4784
1⤵
PID:3124

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 4476 -ip 4476
1⤵
PID:1140

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 484 -p 4476 -ip 4476
1⤵
PID:2056

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\NEAS.6b820b018cbfadbbe6162a588f5e3c10.exe

Filesize
1.4MB

MD5
5033988ac698dfa3291b7d66eae8a08d

SHA1
b2096ded592fb9533facdd1d247601694a9b2944

SHA256
e855fe33dbe60b3105f2d48a5b5ee8792da25eec42fff02ed2ebaf152c60e0a2

SHA512
75a41502827b984fc488f068fbfa507a1bc8ecbe2c48d2c161d017ce92034a2779418392f5f49ec4a38c4577f5fcd5301141badd27545852497c16408c397ce6

Download Submit
memory/4476-6-0x0000000000400000-0x00000000004F2000-memory.dmp

Filesize
968KB

Download
memory/4476-8-0x0000000005040000-0x0000000005132000-memory.dmp

Filesize
968KB

Download
memory/4476-9-0x0000000000400000-0x00000000004A3000-memory.dmp

Filesize
652KB

Download
memory/4784-0-0x0000000000400000-0x00000000004F2000-memory.dmp

Filesize
968KB

Download
memory/4784-7-0x0000000000400000-0x00000000004F2000-memory.dmp

Filesize
968KB

Download