9a5b768679a82140e299f3845f53a7156a2c179d4f6e2ba11b883f0e98fb3174

Analysis

max time kernel
145s
max time network
120s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
25-12-2023 05:44

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

0900d3c3c10879419b17809610e4b269.exe
Size

2.9MB
MD5

0900d3c3c10879419b17809610e4b269
SHA1

2628631d4907d397c7fff1ef4c4881f3046c7b83
SHA256

9a5b768679a82140e299f3845f53a7156a2c179d4f6e2ba11b883f0e98fb3174
SHA512

bbafbe58d34362890f00b3c979057c4d33c6d211cefedadedf16646650bb3ec7b68581ea61a5c146e9b81d3ed3ea594c3c76fa3f1f1017cecfbcc1bcdf763227
SSDEEP

12288:Tp4pNfz3ymJnJ8QCFkxCaQTOlOb47MMpXKb0hNGh1kG0HWnALue:tEtl9mRda1rMMpXS0hN0V0Hj

Score

10^/10

persistence ransomware

Malware Config

Signatures

Modifies WinLogon for persistence 2 TTPs 2 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "Explorer.exe HelpMe.exe"	0900d3c3c10879419b17809610e4b269.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "Explorer.exe HelpMe.exe"	HelpMe.exe

Renames multiple (91) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
ransomware

Drops startup file 3 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Soft.lnk	0900d3c3c10879419b17809610e4b269.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Soft.lnk	HelpMe.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Soft.lnk	0900d3c3c10879419b17809610e4b269.exe

Executes dropped EXE 1 IoCs

pid	Process
1948	HelpMe.exe

Loads dropped DLL 2 IoCs

pid	Process
2252	0900d3c3c10879419b17809610e4b269.exe
2252	0900d3c3c10879419b17809610e4b269.exe

Enumerates connected drives 3 TTPs 46 IoCs

Attempts to read the root path of hard drives other than the default C: drive.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
File opened (read-only)	\??\P:	HelpMe.exe
File opened (read-only)	\??\R:	0900d3c3c10879419b17809610e4b269.exe
File opened (read-only)	\??\S:	0900d3c3c10879419b17809610e4b269.exe
File opened (read-only)	\??\Y:	0900d3c3c10879419b17809610e4b269.exe
File opened (read-only)	\??\G:	HelpMe.exe
File opened (read-only)	\??\I:	HelpMe.exe
File opened (read-only)	\??\K:	HelpMe.exe
File opened (read-only)	\??\M:	HelpMe.exe
File opened (read-only)	\??\A:	0900d3c3c10879419b17809610e4b269.exe
File opened (read-only)	\??\E:	0900d3c3c10879419b17809610e4b269.exe
File opened (read-only)	\??\H:	0900d3c3c10879419b17809610e4b269.exe
File opened (read-only)	\??\Z:	0900d3c3c10879419b17809610e4b269.exe
File opened (read-only)	\??\U:	HelpMe.exe
File opened (read-only)	\??\V:	HelpMe.exe
File opened (read-only)	\??\Y:	HelpMe.exe
File opened (read-only)	\??\N:	0900d3c3c10879419b17809610e4b269.exe
File opened (read-only)	\??\P:	0900d3c3c10879419b17809610e4b269.exe
File opened (read-only)	\??\A:	HelpMe.exe
File opened (read-only)	\??\J:	HelpMe.exe
File opened (read-only)	\??\N:	HelpMe.exe
File opened (read-only)	\??\Q:	HelpMe.exe
File opened (read-only)	\??\S:	HelpMe.exe
File opened (read-only)	\??\I:	0900d3c3c10879419b17809610e4b269.exe
File opened (read-only)	\??\K:	0900d3c3c10879419b17809610e4b269.exe
File opened (read-only)	\??\W:	0900d3c3c10879419b17809610e4b269.exe
File opened (read-only)	\??\T:	HelpMe.exe
File opened (read-only)	\??\W:	HelpMe.exe
File opened (read-only)	\??\Z:	HelpMe.exe
File opened (read-only)	\??\G:	0900d3c3c10879419b17809610e4b269.exe
File opened (read-only)	\??\O:	0900d3c3c10879419b17809610e4b269.exe
File opened (read-only)	\??\T:	0900d3c3c10879419b17809610e4b269.exe
File opened (read-only)	\??\V:	0900d3c3c10879419b17809610e4b269.exe
File opened (read-only)	\??\X:	0900d3c3c10879419b17809610e4b269.exe
File opened (read-only)	\??\B:	HelpMe.exe
File opened (read-only)	\??\H:	HelpMe.exe
File opened (read-only)	\??\B:	0900d3c3c10879419b17809610e4b269.exe
File opened (read-only)	\??\J:	0900d3c3c10879419b17809610e4b269.exe
File opened (read-only)	\??\L:	0900d3c3c10879419b17809610e4b269.exe
File opened (read-only)	\??\U:	0900d3c3c10879419b17809610e4b269.exe
File opened (read-only)	\??\E:	HelpMe.exe
File opened (read-only)	\??\O:	HelpMe.exe
File opened (read-only)	\??\X:	HelpMe.exe
File opened (read-only)	\??\M:	0900d3c3c10879419b17809610e4b269.exe
File opened (read-only)	\??\Q:	0900d3c3c10879419b17809610e4b269.exe
File opened (read-only)	\??\L:	HelpMe.exe
File opened (read-only)	\??\R:	HelpMe.exe

Drops autorun.inf file 1 TTPs 3 IoCs

Malware can abuse Windows Autorun to spread further via attached volumes.

Replication Through Removable Media

T1091

description	ioc	Process
File opened for modification	F:\AUTORUN.INF	0900d3c3c10879419b17809610e4b269.exe
File opened for modification	C:\AUTORUN.INF	0900d3c3c10879419b17809610e4b269.exe
File opened for modification	F:\AUTORUN.INF	HelpMe.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\HelpMe.exe	0900d3c3c10879419b17809610e4b269.exe
File created	C:\Windows\SysWOW64\HelpMe.exe	HelpMe.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2252 wrote to memory of 1948	2252	0900d3c3c10879419b17809610e4b269.exe	28
PID 2252 wrote to memory of 1948	2252	0900d3c3c10879419b17809610e4b269.exe	28
PID 2252 wrote to memory of 1948	2252	0900d3c3c10879419b17809610e4b269.exe	28
PID 2252 wrote to memory of 1948	2252	0900d3c3c10879419b17809610e4b269.exe	28

C:\Users\Admin\AppData\Local\Temp\0900d3c3c10879419b17809610e4b269.exe
"C:\Users\Admin\AppData\Local\Temp\0900d3c3c10879419b17809610e4b269.exe"
1⤵
- Modifies WinLogon for persistence
- Drops startup file
- Loads dropped DLL
- Enumerates connected drives
- Drops autorun.inf file
- Drops file in System32 directory
- Suspicious use of WriteProcessMemory
PID:2252
- C:\Windows\SysWOW64\HelpMe.exe
  C:\Windows\system32\HelpMe.exe
  2⤵
  - Modifies WinLogon for persistence
  - Drops startup file
  - Executes dropped EXE
  - Enumerates connected drives
  - Drops autorun.inf file
  - Drops file in System32 directory
  PID:1948

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Replication Through Removable Media

T1091

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Winlogon Helper DLL

T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Winlogon Helper DLL

T1547.004

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Replication Through Removable Media

T1091

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Soft.lnk

Filesize
1KB

MD5
26cf24c444697ab99d4ffc5f1084b904

SHA1
2f5eb4bc6f386bd6c157e9e00de5c2f283d7fa79

SHA256
47ec3e552e57c974469c4f441301da6c45b038b721ff27117b2a3171146cea82

SHA512
7274918d6d192b913fcb425923289f6be2e06e71f75c68c85633dfd5f44f829d5dc9e698152894d44a385d065b18f311c70aefa01c5fa84bedf2a1f8b4b88a2c

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Soft.lnk

Filesize
950B

MD5
d7570009cfe29459e03dfb86b5009ee5

SHA1
0c4a233a6142b1b4aa2861a5cba96b6d67bcc079

SHA256
537f0706138dee6e558e37a08065a46f5f27884c594965b8e3f7188f0814a086

SHA512
155b60adf5454fec181403268985a6cf7ed134aa35a5a732e9ebffed640cca20ee18b5c8a840fe2e67cbca970025e8d9f5e7307f1571b3cc3bbc3ebbd3cdb89e

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

Filesize
382KB

MD5
cf2c4b8f64cd81e6d77f112ad2c64775

SHA1
87fa9de1aff51e5a50603c64483ee5283deb19cf

SHA256
02461c082cfc1484c96f3115d5eca036b9c08519440ec2c43e49dd6df96be9e7

SHA512
7ba6ac0fc7c47601c19e7cd567428214697c85e052b62622dcb0eacd96c500d7e137f6645e770666894ff47e38413326e1ef754f428eaae9f0199e5b97059194

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

Filesize
93KB

MD5
c7845c37c6e1bf2d5706432ec146a170

SHA1
cbb7a615648861486b5f699112b07df50c59389b

SHA256
60983193cd99b861549003273da2432c6a92e4f4fce21add3d2a7d0c952121bd

SHA512
bd79db710f2f3cf5116db98a2c2992cd27e02263a18e00d72b589b3c4fd4447775656faa4ae19d73687b9131db8a73d7f7c7406bb6db69ea6565f0ad838abfe7

Download Submit
\Windows\SysWOW64\HelpMe.exe

Filesize
1.1MB

MD5
5064acda65535020428af7c454cfb3be

SHA1
00c5c09feff1865b254c381fb5c3cbcdc7ad9028

SHA256
a9dcc75c400147f9a1f14fdc29bfecc83564f308fa7f80e0c93be58b102b7a65

SHA512
cbc5a1e452ae9d89cb351830f9079097a66fd5dcc0bb7b5b736c06babce01ce1888585a9ee537fd130bc394d5d64d40b47eff9dcd1bd6d99efd9e46386a594cf

Download Submit
\Windows\SysWOW64\HelpMe.exe

Filesize
412KB

MD5
5def5fc8bab701675dd5df461cd9c25a

SHA1
8d69d7ca9a38e66bb01452d3b2372e3304666adf

SHA256
8bc6beccf39af410f92ba5e3a65ab4c204ef1c81061b560ed3e9bee76e23f30d

SHA512
762e0dfe86c480a6b8a8cab6d15cf5d68f07151a8d6624815a3345d2e43f582e44be883ce7d00a1f07e59612c3e8da8f9a761daf96d0603a375c30a5a04e1ddd

Download Submit
memory/1948-9-0x0000000000220000-0x0000000000221000-memory.dmp

Filesize
4KB

Download
memory/1948-236-0x0000000000220000-0x0000000000221000-memory.dmp

Filesize
4KB

Download
memory/2252-1-0x0000000000230000-0x0000000000231000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads