e6cdef1da97ea607ea91155ef24a806e6e204b1b82e62768490541b335b53eb4

Analysis

max time kernel
145s
max time network
120s
platform
windows7_x64
resource
win7-20240705-en
resource tags

arch:x64arch:x86image:win7-20240705-enlocale:en-usos:windows7-x64system
submitted
26-07-2024 06:42

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General

Target

e6cdef1da97ea607ea91155ef24a806e6e204b1b82e62768490541b335b53eb4.exe
Size

632KB
MD5

dce1689a2961ab5bfd7877861add364d
SHA1

77b88b99120b9a7cb9aa62db0cb4e787f16697cd
SHA256

e6cdef1da97ea607ea91155ef24a806e6e204b1b82e62768490541b335b53eb4
SHA512

c54a8fc4568cb313d312b7f2899d8a9f60b5a3aea1fef223bea40772574eb916f5357225c9f8e87d11aad6632d35bc704ec563eb3ff1d9faea414fd731a72683
SSDEEP

6144:382p4pFHfzMepymgWPnviP6Koa0nArn20l96tCF2eKNBDRlC8HQQDhy5OwbYBwNu:Tp4pNfz3ymJnJ8QCFkxCaQTOlOb4b1YI

Score

10^/10

discovery 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"	e6cdef1da97ea607ea91155ef24a806e6e204b1b82e62768490541b335b53eb4.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	e6cdef1da97ea607ea91155ef24a806e6e204b1b82e62768490541b335b53eb4.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	e6cdef1da97ea607ea91155ef24a806e6e204b1b82e62768490541b335b53eb4.exe

Executes dropped EXE 1 IoCs

pid	Process
1676	HelpMe.exe

Loads dropped DLL 2 IoCs

pid	Process
2552	e6cdef1da97ea607ea91155ef24a806e6e204b1b82e62768490541b335b53eb4.exe
2552	e6cdef1da97ea607ea91155ef24a806e6e204b1b82e62768490541b335b53eb4.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)	\??\T:	e6cdef1da97ea607ea91155ef24a806e6e204b1b82e62768490541b335b53eb4.exe
File opened (read-only)	\??\A:	HelpMe.exe
File opened (read-only)	\??\S:	HelpMe.exe
File opened (read-only)	\??\W:	HelpMe.exe
File opened (read-only)	\??\X:	HelpMe.exe
File opened (read-only)	\??\Y:	HelpMe.exe
File opened (read-only)	\??\B:	e6cdef1da97ea607ea91155ef24a806e6e204b1b82e62768490541b335b53eb4.exe
File opened (read-only)	\??\Q:	e6cdef1da97ea607ea91155ef24a806e6e204b1b82e62768490541b335b53eb4.exe
File opened (read-only)	\??\O:	e6cdef1da97ea607ea91155ef24a806e6e204b1b82e62768490541b335b53eb4.exe
File opened (read-only)	\??\G:	HelpMe.exe
File opened (read-only)	\??\H:	HelpMe.exe
File opened (read-only)	\??\N:	HelpMe.exe
File opened (read-only)	\??\T:	HelpMe.exe
File opened (read-only)	\??\U:	HelpMe.exe
File opened (read-only)	\??\A:	e6cdef1da97ea607ea91155ef24a806e6e204b1b82e62768490541b335b53eb4.exe
File opened (read-only)	\??\M:	e6cdef1da97ea607ea91155ef24a806e6e204b1b82e62768490541b335b53eb4.exe
File opened (read-only)	\??\P:	e6cdef1da97ea607ea91155ef24a806e6e204b1b82e62768490541b335b53eb4.exe
File opened (read-only)	\??\V:	e6cdef1da97ea607ea91155ef24a806e6e204b1b82e62768490541b335b53eb4.exe
File opened (read-only)	\??\X:	e6cdef1da97ea607ea91155ef24a806e6e204b1b82e62768490541b335b53eb4.exe
File opened (read-only)	\??\Y:	e6cdef1da97ea607ea91155ef24a806e6e204b1b82e62768490541b335b53eb4.exe
File opened (read-only)	\??\K:	HelpMe.exe
File opened (read-only)	\??\M:	HelpMe.exe
File opened (read-only)	\??\G:	e6cdef1da97ea607ea91155ef24a806e6e204b1b82e62768490541b335b53eb4.exe
File opened (read-only)	\??\L:	e6cdef1da97ea607ea91155ef24a806e6e204b1b82e62768490541b335b53eb4.exe
File opened (read-only)	\??\R:	HelpMe.exe
File opened (read-only)	\??\V:	HelpMe.exe
File opened (read-only)	\??\Z:	HelpMe.exe
File opened (read-only)	\??\W:	e6cdef1da97ea607ea91155ef24a806e6e204b1b82e62768490541b335b53eb4.exe
File opened (read-only)	\??\J:	HelpMe.exe
File opened (read-only)	\??\N:	e6cdef1da97ea607ea91155ef24a806e6e204b1b82e62768490541b335b53eb4.exe
File opened (read-only)	\??\R:	e6cdef1da97ea607ea91155ef24a806e6e204b1b82e62768490541b335b53eb4.exe
File opened (read-only)	\??\S:	e6cdef1da97ea607ea91155ef24a806e6e204b1b82e62768490541b335b53eb4.exe
File opened (read-only)	\??\L:	HelpMe.exe
File opened (read-only)	\??\Q:	HelpMe.exe
File opened (read-only)	\??\I:	e6cdef1da97ea607ea91155ef24a806e6e204b1b82e62768490541b335b53eb4.exe
File opened (read-only)	\??\K:	e6cdef1da97ea607ea91155ef24a806e6e204b1b82e62768490541b335b53eb4.exe
File opened (read-only)	\??\I:	HelpMe.exe
File opened (read-only)	\??\H:	e6cdef1da97ea607ea91155ef24a806e6e204b1b82e62768490541b335b53eb4.exe
File opened (read-only)	\??\U:	e6cdef1da97ea607ea91155ef24a806e6e204b1b82e62768490541b335b53eb4.exe
File opened (read-only)	\??\J:	e6cdef1da97ea607ea91155ef24a806e6e204b1b82e62768490541b335b53eb4.exe
File opened (read-only)	\??\E:	HelpMe.exe
File opened (read-only)	\??\B:	HelpMe.exe
File opened (read-only)	\??\O:	HelpMe.exe
File opened (read-only)	\??\P:	HelpMe.exe
File opened (read-only)	\??\E:	e6cdef1da97ea607ea91155ef24a806e6e204b1b82e62768490541b335b53eb4.exe
File opened (read-only)	\??\Z:	e6cdef1da97ea607ea91155ef24a806e6e204b1b82e62768490541b335b53eb4.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	e6cdef1da97ea607ea91155ef24a806e6e204b1b82e62768490541b335b53eb4.exe
File opened for modification	C:\AUTORUN.INF	e6cdef1da97ea607ea91155ef24a806e6e204b1b82e62768490541b335b53eb4.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	e6cdef1da97ea607ea91155ef24a806e6e204b1b82e62768490541b335b53eb4.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

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	HelpMe.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	e6cdef1da97ea607ea91155ef24a806e6e204b1b82e62768490541b335b53eb4.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2552 wrote to memory of 1676	2552	e6cdef1da97ea607ea91155ef24a806e6e204b1b82e62768490541b335b53eb4.exe	30
PID 2552 wrote to memory of 1676	2552	e6cdef1da97ea607ea91155ef24a806e6e204b1b82e62768490541b335b53eb4.exe	30
PID 2552 wrote to memory of 1676	2552	e6cdef1da97ea607ea91155ef24a806e6e204b1b82e62768490541b335b53eb4.exe	30
PID 2552 wrote to memory of 1676	2552	e6cdef1da97ea607ea91155ef24a806e6e204b1b82e62768490541b335b53eb4.exe	30

C:\Users\Admin\AppData\Local\Temp\e6cdef1da97ea607ea91155ef24a806e6e204b1b82e62768490541b335b53eb4.exe
"C:\Users\Admin\AppData\Local\Temp\e6cdef1da97ea607ea91155ef24a806e6e204b1b82e62768490541b335b53eb4.exe"
1⤵
- Modifies WinLogon for persistence
- Drops startup file
- Loads dropped DLL
- Enumerates connected drives
- Drops autorun.inf file
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2552
- 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
  - System Location Discovery: System Language Discovery
  PID:1676

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

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Replication Through Removable Media

T1091

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\$Recycle.Bin\S-1-5-21-1385883288-3042840365-2734249351-1000\desktop.ini.exe

Filesize
633KB

MD5
f3b5302b17ce9a21e0ed0dcc7c85dc8d

SHA1
afac5b76c070e2ba24cf68691f4e98446e400897

SHA256
b883c56f97728154e9e03231f7c0033a4dd422a6b2a632e13b54b4b979460e3f

SHA512
25820184b7d13eb078d6792887490b28009ff56fe53e531e873444bc0fd241a5fa1aecbe738563c13c6a9e9d652b048ed6fdf3e4bb1becccc75aeb3550038ec8

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

Filesize
1KB

MD5
15d4ffb24b760df770cf9f48f7abb13c

SHA1
b22bbf93343d09c1e8bf8ce3df4fbe7c19cce031

SHA256
5930d84598e5e853ee1a38dde5e9149d28fbcd14b6cb3c2166edc5f55e2c1ad9

SHA512
3ab3e7bc9da0b712392094e2598882b8b7516076c7504484f3a32b7bcd64aafee9ba957d1bd52383159617aef68b499a6addc04780f718ed8dcdac2d6d19233f

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

Filesize
954B

MD5
b4a9776addba5fa47a15fd08764134c3

SHA1
387bb45c5887cb525f1de2c306d8f6663b77cff7

SHA256
358fa63e6ca87f61312e34b046e398bb11c6fca38a1e5387563c67b51402648a

SHA512
557ae726b513c4bd8c0eb3bf04d7203af748c861950f4ac4c40a45cc78e0aa7b7290309f15c87e01c0224d3b696a7f91946a589fad0e226de424dd4248c2fbc8

Download Submit
F:\AUTORUN.INF

Filesize
145B

MD5
ca13857b2fd3895a39f09d9dde3cca97

SHA1
8b78c5b2ec97c372ebdcef92d14b0998f8dd6dd0

SHA256
cfe448b4506a95b33b529efa88f1ac704d8bdf98a941c065650ead27609318ae

SHA512
55e5b5325968d1e5314527fb2d26012f5aae4a1c38e305417be273400cb1c6d0c22b85bddb501d7a5720a3f53bb5caf6ada8a7894232344c4f6c6ef85d226b47

Download Submit
F:\AutoRun.exe

Filesize
632KB

MD5
dce1689a2961ab5bfd7877861add364d

SHA1
77b88b99120b9a7cb9aa62db0cb4e787f16697cd

SHA256
e6cdef1da97ea607ea91155ef24a806e6e204b1b82e62768490541b335b53eb4

SHA512
c54a8fc4568cb313d312b7f2899d8a9f60b5a3aea1fef223bea40772574eb916f5357225c9f8e87d11aad6632d35bc704ec563eb3ff1d9faea414fd731a72683

Download Submit
\Windows\SysWOW64\HelpMe.exe

Filesize
629KB

MD5
9684127af91aecf2c6e74ea0ce74f1e6

SHA1
aaf4d91ee6da80dd7661fb8a5b785d50ca1af750

SHA256
30b834e03361c871121f8fab656b0e8949921cb2bc962c91ae0d162849628363

SHA512
2c7cde327acaa347601b89780173a0e954947fc2f589d79ae4d800395ed350761d7f04a81c26ecd1a0e0c94492551bfe23169fa6c2ae502b37c2a9cec5b7f59e

Download Submit
memory/1676-10-0x00000000001B0000-0x00000000001B1000-memory.dmp

Filesize
4KB

Download
memory/2552-1-0x0000000000230000-0x0000000000231000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads