ebb5b56ba0b47c37b2ff05de65760214f69ef5d224869f1ccb7addf47f44a5f6

Analysis

max time kernel
146s
max time network
122s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
03/02/2024, 10:52

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

8c25b0dc860a18b9ff96a9a8c8ab6468.exe
Size

1.4MB
MD5

8c25b0dc860a18b9ff96a9a8c8ab6468
SHA1

947657839f9ce890667a6159f511f50f8dd560ef
SHA256

ebb5b56ba0b47c37b2ff05de65760214f69ef5d224869f1ccb7addf47f44a5f6
SHA512

d2fee0aa4db36ecacbfe5a78b8eeabd8f9337d841d7a92d640de996bdba5d98e55db50f918135fe5e58227c76836d5156b6d4384750fcc6a64cadf1b8d7f9824
SSDEEP

24576:8Etl9mRda1hSGB2uJ2s4otqFCJrW9FqvSbqsHasgXhFHDAGtlRXZ+CP63n0NuJvO:PEs1cM

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"	8c25b0dc860a18b9ff96a9a8c8ab6468.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	8c25b0dc860a18b9ff96a9a8c8ab6468.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	8c25b0dc860a18b9ff96a9a8c8ab6468.exe

Executes dropped EXE 1 IoCs

pid	Process
2284	HelpMe.exe

Loads dropped DLL 2 IoCs

pid	Process
2080	8c25b0dc860a18b9ff96a9a8c8ab6468.exe
2080	8c25b0dc860a18b9ff96a9a8c8ab6468.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)	\??\L:	8c25b0dc860a18b9ff96a9a8c8ab6468.exe
File opened (read-only)	\??\S:	8c25b0dc860a18b9ff96a9a8c8ab6468.exe
File opened (read-only)	\??\Y:	8c25b0dc860a18b9ff96a9a8c8ab6468.exe
File opened (read-only)	\??\Z:	8c25b0dc860a18b9ff96a9a8c8ab6468.exe
File opened (read-only)	\??\V:	HelpMe.exe
File opened (read-only)	\??\A:	8c25b0dc860a18b9ff96a9a8c8ab6468.exe
File opened (read-only)	\??\K:	8c25b0dc860a18b9ff96a9a8c8ab6468.exe
File opened (read-only)	\??\N:	8c25b0dc860a18b9ff96a9a8c8ab6468.exe
File opened (read-only)	\??\O:	8c25b0dc860a18b9ff96a9a8c8ab6468.exe
File opened (read-only)	\??\U:	8c25b0dc860a18b9ff96a9a8c8ab6468.exe
File opened (read-only)	\??\A:	HelpMe.exe
File opened (read-only)	\??\I:	HelpMe.exe
File opened (read-only)	\??\R:	HelpMe.exe
File opened (read-only)	\??\I:	8c25b0dc860a18b9ff96a9a8c8ab6468.exe
File opened (read-only)	\??\Y:	HelpMe.exe
File opened (read-only)	\??\X:	HelpMe.exe
File opened (read-only)	\??\Q:	8c25b0dc860a18b9ff96a9a8c8ab6468.exe
File opened (read-only)	\??\E:	HelpMe.exe
File opened (read-only)	\??\H:	HelpMe.exe
File opened (read-only)	\??\L:	HelpMe.exe
File opened (read-only)	\??\Q:	HelpMe.exe
File opened (read-only)	\??\M:	8c25b0dc860a18b9ff96a9a8c8ab6468.exe
File opened (read-only)	\??\T:	8c25b0dc860a18b9ff96a9a8c8ab6468.exe
File opened (read-only)	\??\J:	HelpMe.exe
File opened (read-only)	\??\M:	HelpMe.exe
File opened (read-only)	\??\S:	HelpMe.exe
File opened (read-only)	\??\P:	8c25b0dc860a18b9ff96a9a8c8ab6468.exe
File opened (read-only)	\??\W:	8c25b0dc860a18b9ff96a9a8c8ab6468.exe
File opened (read-only)	\??\K:	HelpMe.exe
File opened (read-only)	\??\P:	HelpMe.exe
File opened (read-only)	\??\U:	HelpMe.exe
File opened (read-only)	\??\W:	HelpMe.exe
File opened (read-only)	\??\Z:	HelpMe.exe
File opened (read-only)	\??\J:	8c25b0dc860a18b9ff96a9a8c8ab6468.exe
File opened (read-only)	\??\E:	8c25b0dc860a18b9ff96a9a8c8ab6468.exe
File opened (read-only)	\??\G:	8c25b0dc860a18b9ff96a9a8c8ab6468.exe
File opened (read-only)	\??\H:	8c25b0dc860a18b9ff96a9a8c8ab6468.exe
File opened (read-only)	\??\R:	8c25b0dc860a18b9ff96a9a8c8ab6468.exe
File opened (read-only)	\??\X:	8c25b0dc860a18b9ff96a9a8c8ab6468.exe
File opened (read-only)	\??\G:	HelpMe.exe
File opened (read-only)	\??\N:	HelpMe.exe
File opened (read-only)	\??\B:	8c25b0dc860a18b9ff96a9a8c8ab6468.exe
File opened (read-only)	\??\T:	HelpMe.exe
File opened (read-only)	\??\B:	HelpMe.exe
File opened (read-only)	\??\O:	HelpMe.exe
File opened (read-only)	\??\V:	8c25b0dc860a18b9ff96a9a8c8ab6468.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	HelpMe.exe
File opened for modification	F:\AUTORUN.INF	8c25b0dc860a18b9ff96a9a8c8ab6468.exe
File opened for modification	C:\AUTORUN.INF	8c25b0dc860a18b9ff96a9a8c8ab6468.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\HelpMe.exe	8c25b0dc860a18b9ff96a9a8c8ab6468.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 2080 wrote to memory of 2284	2080	8c25b0dc860a18b9ff96a9a8c8ab6468.exe	28
PID 2080 wrote to memory of 2284	2080	8c25b0dc860a18b9ff96a9a8c8ab6468.exe	28
PID 2080 wrote to memory of 2284	2080	8c25b0dc860a18b9ff96a9a8c8ab6468.exe	28
PID 2080 wrote to memory of 2284	2080	8c25b0dc860a18b9ff96a9a8c8ab6468.exe	28

C:\Users\Admin\AppData\Local\Temp\8c25b0dc860a18b9ff96a9a8c8ab6468.exe
"C:\Users\Admin\AppData\Local\Temp\8c25b0dc860a18b9ff96a9a8c8ab6468.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:2080
- 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:2284

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:\$Recycle.Bin\S-1-5-21-928733405-3780110381-2966456290-1000\desktop.ini.exe

Filesize
1.4MB

MD5
1d6249ecf813074ae220cc36a9a32d0c

SHA1
9389b8af7b84c1683b6a07ec46e61bc1e9b3854b

SHA256
fb214bb84e82a799d35e2f23e27fcdf03772f35238cc3bbf787a0d94bf658b26

SHA512
984022b3e00c6157899294f92fb8994305653433173ccd54dc1fa201641d806939d0b7db8754b1f6fe4162b4403bee36c0d0c0a7a85942e16fc109f7c56b6fb8

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

Filesize
1KB

MD5
6065094a85688013b5cc7f3f97d0fe36

SHA1
04516e58b7136f305b2752bcb6ba70c27719eb8b

SHA256
08a36bbc21fbd55ddd7f259924893b1dd171f0bafb141e75312068b542634d15

SHA512
2f06b77b76fc1f55d7583ea84e9bd08ab8d9a73a562a590c2371604718f1bc1ea87e52e78d05e42e787b203a6ee66efba27ba57cea6be1f0622181763b798fa5

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

Filesize
950B

MD5
8b1e9baa5c4bbb1065d673ce0f188636

SHA1
10944b55e6f46a4fab1634139aeb7116fcb914b2

SHA256
e88d979fec83eef9a05e7a78cf9be6c5381f89b2e767c0f36a5155ba73c5e1e2

SHA512
8b3cb68219e04af30abf458262e28c2b9c71ebc7886c3419819317b6c29720d670ed80d30aaa80c7bc5e678bd2eea31571660a49f20d0e588dc594d381a52b3d

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

Filesize
384KB

MD5
34d0c9c89de8cad087a60496c596f6ed

SHA1
845070f72aafe97f2499c5d044eec16ea053e725

SHA256
3ee4295484dac7d825453f3669e46d4c358ca0ac9a9d3cff79a96beee13f87e9

SHA512
a8326ee4b448cd1dc25d5c675d9b5fa5b2db05a556aee888eda886f820aa257e4b74d529fdbb351b7f0df15356dd7a64395aba86f7ac6912f49aec77dd573908

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

Filesize
318KB

MD5
85890b8d75ba347d0310130708f16035

SHA1
17743fb027e031c3760ebeea31e17e2767adde9f

SHA256
7af4aa4706c7e1a7ef41d55a76bf430bee403e745dc9226ba4b8e92539c13784

SHA512
fb4a17288f50a43b751cff37c72561e36f4fc4a8132c515cfdab870025ab3f78bd5b29748621b1998a6c9905ac5ce9d9f797bae8451c8c74b3369007ca9ff257

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

Filesize
515KB

MD5
b6c837d98a838705912dd2a54287dd21

SHA1
320f12e29ac5b8079c23c333f37564fd07316217

SHA256
1ec2c7cef9f2207b9dd326b49c3223f3fbfa4c43b9ca9d11deae196753652edf

SHA512
77034e7d68bc37a7233852985e82209171dedf8cdd81dba7d40a920b67a03bc45ad3d33895a02c15206f939ae7b0fd2c2c20b6d2a29c255ee4493fe2dfc84e68

Download Submit
F:\AUTORUN.INF

Filesize
145B

MD5
ca13857b2fd3895a39f09d9dde3cca97

SHA1
8b78c5b2ec97c372ebdcef92d14b0998f8dd6dd0

SHA256
cfe448b4506a95b33b529efa88f1ac704d8bdf98a941c065650ead27609318ae

SHA512
55e5b5325968d1e5314527fb2d26012f5aae4a1c38e305417be273400cb1c6d0c22b85bddb501d7a5720a3f53bb5caf6ada8a7894232344c4f6c6ef85d226b47

Download Submit
F:\AutoRun.exe

Filesize
1.4MB

MD5
8c25b0dc860a18b9ff96a9a8c8ab6468

SHA1
947657839f9ce890667a6159f511f50f8dd560ef

SHA256
ebb5b56ba0b47c37b2ff05de65760214f69ef5d224869f1ccb7addf47f44a5f6

SHA512
d2fee0aa4db36ecacbfe5a78b8eeabd8f9337d841d7a92d640de996bdba5d98e55db50f918135fe5e58227c76836d5156b6d4384750fcc6a64cadf1b8d7f9824

Download Submit
\Windows\SysWOW64\HelpMe.exe

Filesize
413KB

MD5
8701cd9e743ec5bde431a3cfe7e32f60

SHA1
114f548eb5f124819b4858959515c32637fba674

SHA256
051dadc2d71f93a072a83442908e3df459fef9f92f9c55b01cb5a0676c6f78e7

SHA512
9276d7bfd7fc5927755cafaba384834ef8305237a31477b067ce59ff032160d42b29a6633d09f262b5d86d9e39d37852e945ba6d4e5160f0b4d76732a6c332e5

Download Submit
\Windows\SysWOW64\HelpMe.exe

Filesize
284KB

MD5
1206d708b444f11c369ae51fdcef9080

SHA1
21831e38e21afee5ebd98bec8541398b9752a0c9

SHA256
269710b0dc6bcd92d828fda927c71794a8f1a23aad678a4795313d17c8343c5e

SHA512
4f3fedbf1f1c19a6f253f45e6985d14c79acca877ddd81515e2e2ed90c46e501be7bd510c4f7ecb8836a0dbef8f82e0fac30a924ca5b7b5e2ae9220dccf65f6b

Download Submit
memory/2080-0-0x0000000000220000-0x0000000000221000-memory.dmp

Filesize
4KB

Download
memory/2080-236-0x0000000000220000-0x0000000000221000-memory.dmp

Filesize
4KB

Download
memory/2284-9-0x0000000000220000-0x0000000000221000-memory.dmp

Filesize
4KB

Download
memory/2284-237-0x0000000000220000-0x0000000000221000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads