b21f293030df8c3706f999d014d0e31c7673e07dd45e813e23ce80c606bd74cc

Resubmissions

14/02/2024, 03:14

240214-drczaafe3s 6

13/02/2024, 22:25

240213-2b1bmsbg82 6

Analysis

max time kernel
145s
max time network
146s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
13/02/2024, 22:25

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General

Target

start.bat
Size

548B
MD5

12c37bf6537bfdf93b80c31f6d1391b2
SHA1

43df564e4988008f3e97167837f58f1452cf3d13
SHA256

cab7b8973dd5f7252af6a1a080deec442acd1e6bdd6c7476bd73e39553751222
SHA512

c59645da2377ec2eb8c4ca75174379134dc657741ee324fc6fd38170b9704852bf136a919fe0363ea85befe61e8838ef74dad07e365392d8f8f6462bb1ba75f9

Score

6^/10

Malware Config

Signatures

Looks up external IP address via web service 1 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
3	ip-api.com

Suspicious behavior: CmdExeWriteProcessMemorySpam 1 IoCs

pid	Process
2936	Nezur.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2088 wrote to memory of 2556	2088	cmd.exe	29
PID 2088 wrote to memory of 2556	2088	cmd.exe	29
PID 2088 wrote to memory of 2556	2088	cmd.exe	29
PID 2088 wrote to memory of 2936	2088	cmd.exe	30
PID 2088 wrote to memory of 2936	2088	cmd.exe	30
PID 2088 wrote to memory of 2936	2088	cmd.exe	30
PID 2088 wrote to memory of 2936	2088	cmd.exe	30

C:\Windows\system32\cmd.exe
cmd /c "C:\Users\Admin\AppData\Local\Temp\start.bat"
1⤵
- Suspicious use of WriteProcessMemory
PID:2088
- C:\Windows\system32\cacls.exe
  "C:\Windows\system32\cacls.exe" "C:\Windows\system32\config\system"
  2⤵
  PID:2556
- C:\Users\Admin\AppData\Local\Temp\Nezur.exe
  Nezur.exe auto_load.txt
  2⤵
  - Suspicious behavior: CmdExeWriteProcessMemorySpam
  PID:2936

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\Cab2252.tmp

Filesize
65KB

MD5
ac05d27423a85adc1622c714f2cb6184

SHA1
b0fe2b1abddb97837ea0195be70ab2ff14d43198

SHA256
c6456e12e5e53287a547af4103e0397cb9697e466cf75844312dc296d43d144d

SHA512
6d0ef9050e41fbae680e0e59dd0f90b6ac7fea5579ef5708b69d5da33a0ece7e8b16574b58b17b64a34cc34a4ffc22b4a62c1ece61f36c4a11a0665e0536b90d

Download Submit
C:\Users\Admin\AppData\Local\Temp\Tar2283.tmp

Filesize
171KB

MD5
9c0c641c06238516f27941aa1166d427

SHA1
64cd549fb8cf014fcd9312aa7a5b023847b6c977

SHA256
4276af3669a141a59388bc56a87f6614d9a9bdddf560636c264219a7eb11256f

SHA512
936ed0c0b0a7ff8e606b1cc4175a1f9b3699748ccbba1c3aff96203033d2e9edabf090e5148370df42fbfc4e31d7229493706ff24f19ff42ff7bef74a6baad06

Download Submit
memory/2936-0-0x000000007EFA0000-0x000000007EFB0000-memory.dmp

Filesize
64KB

Download
memory/2936-1-0x000000007EFA0000-0x000000007EFB0000-memory.dmp

Filesize
64KB

Download
memory/2936-2-0x000000007EFA0000-0x000000007EFB0000-memory.dmp

Filesize
64KB

Download
memory/2936-3-0x000000007EFA0000-0x000000007EFB0000-memory.dmp

Filesize
64KB

Download
memory/2936-4-0x000000007EFA0000-0x000000007EFB0000-memory.dmp

Filesize
64KB

Download
memory/2936-5-0x000000007EFA0000-0x000000007EFB0000-memory.dmp

Filesize
64KB

Download
memory/2936-6-0x000000007EFA0000-0x000000007EFB0000-memory.dmp

Filesize
64KB

Download
memory/2936-7-0x000000007EFA0000-0x000000007EFB0000-memory.dmp

Filesize
64KB

Download
memory/2936-8-0x000000007EFA0000-0x000000007EFB0000-memory.dmp

Filesize
64KB

Download
memory/2936-9-0x000000007EFA0000-0x000000007EFB0000-memory.dmp

Filesize
64KB

Download
memory/2936-16-0x000000007EFA0000-0x000000007EFB0000-memory.dmp

Filesize
64KB

Download
memory/2936-15-0x000000007EFA0000-0x000000007EFB0000-memory.dmp

Filesize
64KB

Download
memory/2936-14-0x000000007EFA0000-0x000000007EFB0000-memory.dmp

Filesize
64KB

Download
memory/2936-13-0x000000007EFA0000-0x000000007EFB0000-memory.dmp

Filesize
64KB

Download
memory/2936-12-0x000000007EFA0000-0x000000007EFB0000-memory.dmp

Filesize
64KB

Download
memory/2936-11-0x000000007EFA0000-0x000000007EFB0000-memory.dmp

Filesize
64KB

Download
memory/2936-10-0x000000007EFA0000-0x000000007EFB0000-memory.dmp

Filesize
64KB

Download
memory/2936-17-0x000000007EFA0000-0x000000007EFB0000-memory.dmp

Filesize
64KB

Download
memory/2936-18-0x000000007EFA0000-0x000000007EFB0000-memory.dmp

Filesize
64KB

Download
memory/2936-19-0x000000007EFA0000-0x000000007EFB0000-memory.dmp

Filesize
64KB

Download
memory/2936-20-0x000000007EFA0000-0x000000007EFB0000-memory.dmp

Filesize
64KB

Download
memory/2936-21-0x000000007EFA0000-0x000000007EFB0000-memory.dmp

Filesize
64KB

Download
memory/2936-22-0x000000007EFA0000-0x000000007EFB0000-memory.dmp

Filesize
64KB

Download
memory/2936-23-0x000000007EFA0000-0x000000007EFB0000-memory.dmp

Filesize
64KB

Download
memory/2936-24-0x000000007EFA0000-0x000000007EFB0000-memory.dmp

Filesize
64KB

Download
memory/2936-25-0x000000007EFA0000-0x000000007EFB0000-memory.dmp

Filesize
64KB

Download
memory/2936-26-0x000000007EFA0000-0x000000007EFB0000-memory.dmp

Filesize
64KB

Download
memory/2936-27-0x000000007EFA0000-0x000000007EFB0000-memory.dmp

Filesize
64KB

Download
memory/2936-28-0x000000007EFA0000-0x000000007EFB0000-memory.dmp

Filesize
64KB

Download
memory/2936-29-0x000000007EFA0000-0x000000007EFB0000-memory.dmp

Filesize
64KB

Download
memory/2936-30-0x000000007EFA0000-0x000000007EFB0000-memory.dmp

Filesize
64KB

Download
memory/2936-31-0x000000007EFA0000-0x000000007EFB0000-memory.dmp

Filesize
64KB

Download
memory/2936-32-0x000000007EFA0000-0x000000007EFB0000-memory.dmp

Filesize
64KB

Download
memory/2936-33-0x000000007EFA0000-0x000000007EFB0000-memory.dmp

Filesize
64KB

Download
memory/2936-34-0x000000007EFA0000-0x000000007EFB0000-memory.dmp

Filesize
64KB

Download
memory/2936-35-0x000000007EFA0000-0x000000007EFB0000-memory.dmp

Filesize
64KB

Download
memory/2936-36-0x000000007EFA0000-0x000000007EFB0000-memory.dmp

Filesize
64KB

Download
memory/2936-37-0x000000007EFA0000-0x000000007EFB0000-memory.dmp

Filesize
64KB

Download
memory/2936-38-0x000000007EFA0000-0x000000007EFB0000-memory.dmp

Filesize
64KB

Download
memory/2936-39-0x000000007EFA0000-0x000000007EFB0000-memory.dmp

Filesize
64KB

Download
memory/2936-40-0x000000007EFA0000-0x000000007EFB0000-memory.dmp

Filesize
64KB

Download
memory/2936-41-0x000000007EFA0000-0x000000007EFB0000-memory.dmp

Filesize
64KB

Download
memory/2936-42-0x000000007EFA0000-0x000000007EFB0000-memory.dmp

Filesize
64KB

Download
memory/2936-43-0x000000007EFA0000-0x000000007EFB0000-memory.dmp

Filesize
64KB

Download
memory/2936-44-0x000000007EFA0000-0x000000007EFB0000-memory.dmp

Filesize
64KB

Download
memory/2936-45-0x000000007EFA0000-0x000000007EFB0000-memory.dmp

Filesize
64KB

Download
memory/2936-46-0x000000007EFA0000-0x000000007EFB0000-memory.dmp

Filesize
64KB

Download
memory/2936-47-0x000000007EFA0000-0x000000007EFB0000-memory.dmp

Filesize
64KB

Download
memory/2936-48-0x000000007EFA0000-0x000000007EFB0000-memory.dmp

Filesize
64KB

Download
memory/2936-49-0x000000007EFA0000-0x000000007EFB0000-memory.dmp

Filesize
64KB

Download
memory/2936-50-0x000000007EFA0000-0x000000007EFB0000-memory.dmp

Filesize
64KB

Download
memory/2936-51-0x000000007EFA0000-0x000000007EFB0000-memory.dmp

Filesize
64KB

Download
memory/2936-52-0x000000007EFA0000-0x000000007EFB0000-memory.dmp

Filesize
64KB

Download
memory/2936-53-0x000000007EFA0000-0x000000007EFB0000-memory.dmp

Filesize
64KB

Download
memory/2936-54-0x000000007EFA0000-0x000000007EFB0000-memory.dmp

Filesize
64KB

Download
memory/2936-55-0x000000007EFA0000-0x000000007EFB0000-memory.dmp

Filesize
64KB

Download
memory/2936-56-0x000000007EFA0000-0x000000007EFB0000-memory.dmp

Filesize
64KB

Download
memory/2936-57-0x000000007EFA0000-0x000000007EFB0000-memory.dmp

Filesize
64KB

Download
memory/2936-58-0x000000007EFA0000-0x000000007EFB0000-memory.dmp

Filesize
64KB

Download
memory/2936-59-0x000000007EFA0000-0x000000007EFB0000-memory.dmp

Filesize
64KB

Download
memory/2936-60-0x000000007EFA0000-0x000000007EFB0000-memory.dmp

Filesize
64KB

Download
memory/2936-61-0x000000007EFA0000-0x000000007EFB0000-memory.dmp

Filesize
64KB

Download
memory/2936-62-0x000000007EFA0000-0x000000007EFB0000-memory.dmp

Filesize
64KB

Download
memory/2936-63-0x000000007EFA0000-0x000000007EFB0000-memory.dmp

Filesize
64KB

Download