bb82b7c39db66cc9b25fc36a752d183cb7becb460ec8fdccc954a639b987f68a

Analysis

max time kernel
90s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
13-02-2024 07:51

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General

Target

98e0505ee71259272c365fb13d223ff4.exe
Size

14KB
MD5

98e0505ee71259272c365fb13d223ff4
SHA1

1a66aaadd74fcd5ec1280a2330c26e4dacec89e4
SHA256

bb82b7c39db66cc9b25fc36a752d183cb7becb460ec8fdccc954a639b987f68a
SHA512

5e3123b6adfcbe65918acf6cbf492e532b45376d93ef8aedcc45417296e04024a20409b909807d0c3727ebb7444871be9468f0e6078883acd9f610106afc89ee
SSDEEP

192:UKolLDIGpeXSjvnS8KcTmhiXsN9R+aVexqpvoGTUISWIOoMjqujMzk7NOpE/tw:U3VZgXSjvS8FTbsNySV9zTBroe2k5Jt

Score

7^/10

discovery persistence

Malware Config

Signatures

Deletes itself 1 IoCs

pid	Process
2044	unldrexe.exe

Executes dropped EXE 1 IoCs

pid	Process
2044	unldrexe.exe

Adds Run key to start application 2 TTPs 2 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\Run\Unldrexe = "c:\\windows\\syswow64\\unldrexe.exe"	unldrexe.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1168293393-3419776239-306423207-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Unldrexe = "c:\\windows\\syswow64\\unldrexe.exe"	unldrexe.exe

Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\unldrexe.exe	98e0505ee71259272c365fb13d223ff4.exe
File opened for modification	C:\Windows\SysWOW64\unldrexe.exe	98e0505ee71259272c365fb13d223ff4.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3676 wrote to memory of 2044	3676	98e0505ee71259272c365fb13d223ff4.exe	84
PID 3676 wrote to memory of 2044	3676	98e0505ee71259272c365fb13d223ff4.exe	84
PID 3676 wrote to memory of 2044	3676	98e0505ee71259272c365fb13d223ff4.exe	84

C:\Users\Admin\AppData\Local\Temp\98e0505ee71259272c365fb13d223ff4.exe
"C:\Users\Admin\AppData\Local\Temp\98e0505ee71259272c365fb13d223ff4.exe"
1⤵
- Drops file in System32 directory
- Suspicious use of WriteProcessMemory
PID:3676
- C:\Windows\SysWOW64\unldrexe.exe
  C:\Windows\system32\unldrexe.exe 5EA1355FD8066C91 c:\users\admin\appdata\local\temp\98e0505ee71259272c365fb13d223ff4.exe
  2⤵
  - Deletes itself
  - Executes dropped EXE
  - Adds Run key to start application
  PID:2044

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

Query Registry

T1012

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\Unldrexe

Filesize
12B

MD5
b94054d76296c59a92181d337e02e30f

SHA1
2914223734c457407352effe75bed56e4173ea7d

SHA256
feac117677b2853da3f1b338aba99e3465f2e52a40256bf8ff6418a46cdfaff4

SHA512
fd8b314d3b312d4cd2d5f992617d7a573bea63e178bac56ff7bac71aaae1cbdc9e5becc5929c4e3a253dd38ecafe91fb043df8eca94c5550a64f5e5b9dd631b5

Download Submit
C:\Windows\SysWOW64\unldrexe.exe

Filesize
14KB

MD5
98e0505ee71259272c365fb13d223ff4

SHA1
1a66aaadd74fcd5ec1280a2330c26e4dacec89e4

SHA256
bb82b7c39db66cc9b25fc36a752d183cb7becb460ec8fdccc954a639b987f68a

SHA512
5e3123b6adfcbe65918acf6cbf492e532b45376d93ef8aedcc45417296e04024a20409b909807d0c3727ebb7444871be9468f0e6078883acd9f610106afc89ee

Download Submit
memory/2044-10-0x0000000000400000-0x000000000040A000-memory.dmp

Filesize
40KB

Download
memory/2044-12-0x00000000001C0000-0x00000000001C1000-memory.dmp

Filesize
4KB

Download
memory/2044-14-0x00000000001C0000-0x00000000001C1000-memory.dmp

Filesize
4KB

Download
memory/3676-0-0x0000000000400000-0x000000000040A000-memory.dmp

Filesize
40KB

Download
memory/3676-1-0x00000000001C0000-0x00000000001C1000-memory.dmp

Filesize
4KB

Download
memory/3676-11-0x0000000000400000-0x000000000040A000-memory.dmp

Filesize
40KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads