7208b596206e452421fa5c97cbe6ba44d5380d6fbaacd7e3fb0fd7c11b68eb89

Analysis

max time kernel
146s
max time network
124s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
09/01/2024, 08:50

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General

Target

4de14e1f14410aa4e3fe7dc5fddb0d5c.exe
Size

1.1MB
MD5

4de14e1f14410aa4e3fe7dc5fddb0d5c
SHA1

711b726766937fb800a72d42e446e26457f1d9c0
SHA256

7208b596206e452421fa5c97cbe6ba44d5380d6fbaacd7e3fb0fd7c11b68eb89
SHA512

efe6fd33f87f20df915b7db5a36f97b176c77b3f5e7af821eb068f028a11bb31d39a8ced31c6426f0935c8a980fef4c9a0bef3d531c3c61ea286eb17374e5214
SSDEEP

12288:gp4pNfz3ymJnJ8QCFkxCaQTOl2GVqCw+fCbBmBCHB:aEtl9mRda1VICwoCHB

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"	4de14e1f14410aa4e3fe7dc5fddb0d5c.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 opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Soft.lnk	4de14e1f14410aa4e3fe7dc5fddb0d5c.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Soft.lnk	4de14e1f14410aa4e3fe7dc5fddb0d5c.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Soft.lnk	HelpMe.exe

Executes dropped EXE 1 IoCs

pid	Process
2756	HelpMe.exe

Loads dropped DLL 2 IoCs

pid	Process
2256	4de14e1f14410aa4e3fe7dc5fddb0d5c.exe
2256	4de14e1f14410aa4e3fe7dc5fddb0d5c.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:	4de14e1f14410aa4e3fe7dc5fddb0d5c.exe
File opened (read-only)	\??\S:	4de14e1f14410aa4e3fe7dc5fddb0d5c.exe
File opened (read-only)	\??\A:	HelpMe.exe
File opened (read-only)	\??\H:	HelpMe.exe
File opened (read-only)	\??\Q:	HelpMe.exe
File opened (read-only)	\??\R:	4de14e1f14410aa4e3fe7dc5fddb0d5c.exe
File opened (read-only)	\??\U:	4de14e1f14410aa4e3fe7dc5fddb0d5c.exe
File opened (read-only)	\??\V:	4de14e1f14410aa4e3fe7dc5fddb0d5c.exe
File opened (read-only)	\??\Y:	4de14e1f14410aa4e3fe7dc5fddb0d5c.exe
File opened (read-only)	\??\I:	HelpMe.exe
File opened (read-only)	\??\U:	HelpMe.exe
File opened (read-only)	\??\W:	4de14e1f14410aa4e3fe7dc5fddb0d5c.exe
File opened (read-only)	\??\Z:	4de14e1f14410aa4e3fe7dc5fddb0d5c.exe
File opened (read-only)	\??\K:	HelpMe.exe
File opened (read-only)	\??\W:	HelpMe.exe
File opened (read-only)	\??\Z:	HelpMe.exe
File opened (read-only)	\??\B:	4de14e1f14410aa4e3fe7dc5fddb0d5c.exe
File opened (read-only)	\??\Q:	4de14e1f14410aa4e3fe7dc5fddb0d5c.exe
File opened (read-only)	\??\G:	HelpMe.exe
File opened (read-only)	\??\L:	HelpMe.exe
File opened (read-only)	\??\X:	HelpMe.exe
File opened (read-only)	\??\J:	4de14e1f14410aa4e3fe7dc5fddb0d5c.exe
File opened (read-only)	\??\M:	4de14e1f14410aa4e3fe7dc5fddb0d5c.exe
File opened (read-only)	\??\N:	4de14e1f14410aa4e3fe7dc5fddb0d5c.exe
File opened (read-only)	\??\O:	4de14e1f14410aa4e3fe7dc5fddb0d5c.exe
File opened (read-only)	\??\R:	HelpMe.exe
File opened (read-only)	\??\S:	HelpMe.exe
File opened (read-only)	\??\T:	HelpMe.exe
File opened (read-only)	\??\H:	4de14e1f14410aa4e3fe7dc5fddb0d5c.exe
File opened (read-only)	\??\X:	4de14e1f14410aa4e3fe7dc5fddb0d5c.exe
File opened (read-only)	\??\B:	HelpMe.exe
File opened (read-only)	\??\N:	HelpMe.exe
File opened (read-only)	\??\P:	HelpMe.exe
File opened (read-only)	\??\V:	HelpMe.exe
File opened (read-only)	\??\Y:	HelpMe.exe
File opened (read-only)	\??\A:	4de14e1f14410aa4e3fe7dc5fddb0d5c.exe
File opened (read-only)	\??\G:	4de14e1f14410aa4e3fe7dc5fddb0d5c.exe
File opened (read-only)	\??\T:	4de14e1f14410aa4e3fe7dc5fddb0d5c.exe
File opened (read-only)	\??\E:	HelpMe.exe
File opened (read-only)	\??\J:	HelpMe.exe
File opened (read-only)	\??\M:	HelpMe.exe
File opened (read-only)	\??\E:	4de14e1f14410aa4e3fe7dc5fddb0d5c.exe
File opened (read-only)	\??\I:	4de14e1f14410aa4e3fe7dc5fddb0d5c.exe
File opened (read-only)	\??\K:	4de14e1f14410aa4e3fe7dc5fddb0d5c.exe
File opened (read-only)	\??\L:	4de14e1f14410aa4e3fe7dc5fddb0d5c.exe
File opened (read-only)	\??\O:	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	4de14e1f14410aa4e3fe7dc5fddb0d5c.exe
File opened for modification	C:\AUTORUN.INF	4de14e1f14410aa4e3fe7dc5fddb0d5c.exe
File opened for modification	F:\AUTORUN.INF	HelpMe.exe

Drops file in System32 directory 4 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\HelpMe.exe	4de14e1f14410aa4e3fe7dc5fddb0d5c.exe
File created	C:\Windows\SysWOW64\HelpMe.exe	HelpMe.exe
File opened for modification	C:\Windows\SysWOW64\HelpMe.exe	HelpMe.exe
File created	C:\Windows\SysWOW64\notepad.exe.exe	HelpMe.exe

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\Internet Explorer\iexplore.exe.exe	HelpMe.exe

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2756	HelpMe.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2256 wrote to memory of 2756	2256	4de14e1f14410aa4e3fe7dc5fddb0d5c.exe	28
PID 2256 wrote to memory of 2756	2256	4de14e1f14410aa4e3fe7dc5fddb0d5c.exe	28
PID 2256 wrote to memory of 2756	2256	4de14e1f14410aa4e3fe7dc5fddb0d5c.exe	28
PID 2256 wrote to memory of 2756	2256	4de14e1f14410aa4e3fe7dc5fddb0d5c.exe	28

C:\Users\Admin\AppData\Local\Temp\4de14e1f14410aa4e3fe7dc5fddb0d5c.exe
"C:\Users\Admin\AppData\Local\Temp\4de14e1f14410aa4e3fe7dc5fddb0d5c.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:2256
- 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
  - Drops file in Program Files directory
  - Suspicious behavior: EnumeratesProcesses
  PID:2756

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

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Downloads

C:\$Recycle.Bin\S-1-5-21-3427588347-1492276948-3422228430-1000\desktop.ini.exe

Filesize
1.1MB

MD5
5e2f054443dd56e314db9e1779605c4a

SHA1
e88bf5e6d5a907e39822319e273e80f40480fee7

SHA256
538a257bd544e9e735424ded670ee3cacd3ee8018c4d6252d71308fc1bcbbfc1

SHA512
93c5898d65299ca3edb02c6d8d3c34d47157ae264af03edfcf1c1a47ff80e68d6353f4ae97345cd7834e7958c7c9f63875a423e40642c5fadf381f418a16a621

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

Filesize
1KB

MD5
b229407c6502607dc2440c98c2b03a53

SHA1
b32355a34be01efec3f0e0312811e7e321c7764a

SHA256
34a3d6d842886a8af01b5386041564d11823b20e36a6c07a97a2a130c253a72d

SHA512
e857af4c7d46a5d26b5e63648b9225a2668756931fac3a98fb971d06a17e803a6202966f5f4156cc3c99adcd6c2c406d0b233816dd898a696600950647a773ee

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

Filesize
954B

MD5
a6fe7448232fe93c99c2c334d8487d63

SHA1
293cda230fc33109f8a76a5dbdcd2485f90e3574

SHA256
00ff7c4369563562d0b642581ced148ca7ea52e164518b34fe8cb557ab710fb0

SHA512
93ce623fec5ac874cc88a2a24707812705feaa51a2a1e8079db7ca7a9f6062432c4d91fbc99ceb5085eab0875d5aeca9454118f33ec4ed454d626df5e5b65002

Download Submit
F:\AUTORUN.INF

Filesize
145B

MD5
ca13857b2fd3895a39f09d9dde3cca97

SHA1
8b78c5b2ec97c372ebdcef92d14b0998f8dd6dd0

SHA256
cfe448b4506a95b33b529efa88f1ac704d8bdf98a941c065650ead27609318ae

SHA512
55e5b5325968d1e5314527fb2d26012f5aae4a1c38e305417be273400cb1c6d0c22b85bddb501d7a5720a3f53bb5caf6ada8a7894232344c4f6c6ef85d226b47

Download Submit
F:\AutoRun.exe

Filesize
1.1MB

MD5
4de14e1f14410aa4e3fe7dc5fddb0d5c

SHA1
711b726766937fb800a72d42e446e26457f1d9c0

SHA256
7208b596206e452421fa5c97cbe6ba44d5380d6fbaacd7e3fb0fd7c11b68eb89

SHA512
efe6fd33f87f20df915b7db5a36f97b176c77b3f5e7af821eb068f028a11bb31d39a8ced31c6426f0935c8a980fef4c9a0bef3d531c3c61ea286eb17374e5214

Download Submit
\Windows\SysWOW64\HelpMe.exe

Filesize
656KB

MD5
42aeb35ba06d64d0dd6ad16a6a6267b1

SHA1
2d3008e48d0688f81ab4f135688c43ffaee50ca6

SHA256
f5e79f674bd393ae30df4133ead14857dc915fda93e35c1f98a89353f330a990

SHA512
cf64ebb3ab3c9eaa83a4e2b95f0d9e1c39941f6395916ea7798db20b6f84550968952e79ebbc1a80d326dc591b094f61093c9461007a51fc2d5591a2f99330d5

Download Submit
memory/2256-164-0x0000000000220000-0x0000000000221000-memory.dmp

Filesize
4KB

Download
memory/2256-4-0x0000000001EE0000-0x0000000001F59000-memory.dmp

Filesize
484KB

Download
memory/2256-99-0x0000000000400000-0x000000000047894E-memory.dmp

Filesize
482KB

Download
memory/2256-0-0x0000000000400000-0x000000000047894E-memory.dmp

Filesize
482KB

Download
memory/2256-1-0x0000000000220000-0x0000000000221000-memory.dmp

Filesize
4KB

Download
memory/2256-241-0x0000000001EE0000-0x0000000001F59000-memory.dmp

Filesize
484KB

Download
memory/2756-17-0x00000000003B0000-0x00000000003B1000-memory.dmp

Filesize
4KB

Download
memory/2756-11-0x0000000000400000-0x000000000047894E-memory.dmp

Filesize
482KB

Download
memory/2756-242-0x0000000000400000-0x000000000047894E-memory.dmp

Filesize
482KB

Download