c032e7355a59c268614cb55ebe3d4c83dc3e75929bf62f7d2e18c895cad64af5

Analysis

max time kernel
149s
max time network
144s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
30/12/2023, 22:21

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General

Target

HOTFIX/KB832483.exe
Size

2.0MB
MD5

b4060134ceff0f35fac0ef0968558950
SHA1

6f348d3e603d0aa2d84429c69be1698a0d2a6b7b
SHA256

ae810df56535e49c3716df0ac7f8b303e9810b6b90802f6732422e724fa69a23
SHA512

4a9d66e26a4330b0c460d78fa90986837a5f228f9861f398c691c3abdc5806420465cd00b6e0ec652793c77bcc552db7178f19f6e2c71b783768536798abcead
SSDEEP

49152:kJj4LNeJQlHrkUXC1m+9d+7rikF31/KcvpjJ0TOSFNesTA+W73v4M:SUoWL1Spd+39sTRNf1S4M

Score

7^/10

persistence

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2644	dahotfix.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\RunOnce\wextract_cleanup0 = "rundll32.exe C:\\Windows\\system32\\advpack.dll,DelNodeRunDLL32 \"C:\\Users\\Admin\\AppData\\Local\\Temp\\IXP000.TMP\\\""	KB832483.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\Windows\dahotfix.log	dahotfix.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1004 wrote to memory of 2644	1004	KB832483.exe	97
PID 1004 wrote to memory of 2644	1004	KB832483.exe	97
PID 1004 wrote to memory of 2644	1004	KB832483.exe	97

C:\Users\Admin\AppData\Local\Temp\HOTFIX\KB832483.exe
"C:\Users\Admin\AppData\Local\Temp\HOTFIX\KB832483.exe"
1⤵
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:1004
- C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\dahotfix.exe
  C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\dahotfix.exe
  2⤵
  - Executes dropped EXE
  - Drops file in Windows directory
  PID:2644

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\dahotfix.exe

Filesize
119KB

MD5
6da333113835598bd7e8cacbdf06dac5

SHA1
4517f066f8cf077f1a5726710ebb194e31b2292e

SHA256
c9a931fa58c8a7557ad8495147977e120799b287143144791e9c8b6d611e70a4

SHA512
4c5f3c0a621b1b4e9076a93f7d969288010f701dd34e2d5c47de2c7827cae7f1474c7a680ee82dad676cb9198dec5dd58ed6bee05d40ed56ec516f2338a13387

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C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\dahotfix.ini

Filesize
24KB

MD5
ffcabe82612af7554019d409bf6e6e0e

SHA1
aa757a5488e16d7c85911b54e41c4513708a8607

SHA256
9d41b83ce2c47d403ac495456005371dfe9aeced7bfca819881c82041a1f906b

SHA512
92b9963ddeb6a29ddffefec03916733f8da99a4de00a3a18055dbadbfa192794c9e5336398af8bc602590e0399a54b655c1257aea2551d2394ade2c861799f0f

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C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\odbcbcp_253.dll

Filesize
24KB

MD5
a1825b549b53699b5f79d6304a7b1cec

SHA1
ad440122e403969305f9bf45b4cb8058b4a83ed2

SHA256
06636809ed6915b791ad9ef2988deaddcca3a01ce7e87a0f6034bd8377f54953

SHA512
73dd397a688c93b453b7c8ec68f2da2b997e6ea4bf64838d05fcecac7eb7d3f9ee19afcd7295330dbe489e4de247099182a9cdf4d96d08d9dfee2a80299f270f

Download Submit
C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\sqlsrv32_253.dll

Filesize
290KB

MD5
2f3b470c94f853f9c78d56efa0d8bad8

SHA1
3c9349b6c7a5366bfc905e52ba183b5c7737b99a

SHA256
95b2bd188e6b0ff448800aba3d23f6c08c4ed02cd45c14128f7bd495fc52883e

SHA512
392a3c80a30d4d7d075551a7915b0ef68c4b125ec3d91e34526c4b369f9111609fb6d2b003391a96ef4ed6bc9eed9cc701b3dbbc4a8a48abf2ceb4c286088018

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads