191885b5edaf68153062c17e9ed14fcd0189d78af052135351d5c0bffd5d2e8b

Analysis

max time kernel
147s
max time network
125s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
30/12/2023, 22:17

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General

Target

1e3a04c6a1b9a3569a656a45fa2ff15a.exe
Size

6.2MB
MD5

1e3a04c6a1b9a3569a656a45fa2ff15a
SHA1

1e5ee399066ea2284ec7325c96d5bc73d6ac7544
SHA256

191885b5edaf68153062c17e9ed14fcd0189d78af052135351d5c0bffd5d2e8b
SHA512

a7bc8d9effdd7c402f656889f39efc9224215624d5827c37ea4209d14d31aec98d89c2798eb73397ef6c50023391c397c5b90a80cca4184b55a43fcd0f8100ce
SSDEEP

98304:mE2ji0F/LR5Wj+hMMHMMMvMMZMMMlmMMMiMMMYJMMHMMM6MMZMMMqNMMzMMMUMM/:mn+0ltNI2lyH

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"	1e3a04c6a1b9a3569a656a45fa2ff15a.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	1e3a04c6a1b9a3569a656a45fa2ff15a.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	1e3a04c6a1b9a3569a656a45fa2ff15a.exe

Executes dropped EXE 1 IoCs

pid	Process
3064	HelpMe.exe

Loads dropped DLL 2 IoCs

pid	Process
2084	1e3a04c6a1b9a3569a656a45fa2ff15a.exe
2084	1e3a04c6a1b9a3569a656a45fa2ff15a.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)	\??\U:	HelpMe.exe
File opened (read-only)	\??\A:	1e3a04c6a1b9a3569a656a45fa2ff15a.exe
File opened (read-only)	\??\B:	1e3a04c6a1b9a3569a656a45fa2ff15a.exe
File opened (read-only)	\??\R:	1e3a04c6a1b9a3569a656a45fa2ff15a.exe
File opened (read-only)	\??\G:	HelpMe.exe
File opened (read-only)	\??\J:	HelpMe.exe
File opened (read-only)	\??\Q:	HelpMe.exe
File opened (read-only)	\??\R:	HelpMe.exe
File opened (read-only)	\??\V:	HelpMe.exe
File opened (read-only)	\??\K:	1e3a04c6a1b9a3569a656a45fa2ff15a.exe
File opened (read-only)	\??\L:	1e3a04c6a1b9a3569a656a45fa2ff15a.exe
File opened (read-only)	\??\N:	1e3a04c6a1b9a3569a656a45fa2ff15a.exe
File opened (read-only)	\??\U:	1e3a04c6a1b9a3569a656a45fa2ff15a.exe
File opened (read-only)	\??\V:	1e3a04c6a1b9a3569a656a45fa2ff15a.exe
File opened (read-only)	\??\W:	1e3a04c6a1b9a3569a656a45fa2ff15a.exe
File opened (read-only)	\??\Y:	1e3a04c6a1b9a3569a656a45fa2ff15a.exe
File opened (read-only)	\??\A:	HelpMe.exe
File opened (read-only)	\??\H:	1e3a04c6a1b9a3569a656a45fa2ff15a.exe
File opened (read-only)	\??\J:	1e3a04c6a1b9a3569a656a45fa2ff15a.exe
File opened (read-only)	\??\M:	1e3a04c6a1b9a3569a656a45fa2ff15a.exe
File opened (read-only)	\??\P:	1e3a04c6a1b9a3569a656a45fa2ff15a.exe
File opened (read-only)	\??\B:	HelpMe.exe
File opened (read-only)	\??\Y:	HelpMe.exe
File opened (read-only)	\??\Z:	HelpMe.exe
File opened (read-only)	\??\X:	1e3a04c6a1b9a3569a656a45fa2ff15a.exe
File opened (read-only)	\??\Z:	1e3a04c6a1b9a3569a656a45fa2ff15a.exe
File opened (read-only)	\??\E:	HelpMe.exe
File opened (read-only)	\??\X:	HelpMe.exe
File opened (read-only)	\??\S:	1e3a04c6a1b9a3569a656a45fa2ff15a.exe
File opened (read-only)	\??\H:	HelpMe.exe
File opened (read-only)	\??\I:	HelpMe.exe
File opened (read-only)	\??\S:	HelpMe.exe
File opened (read-only)	\??\M:	HelpMe.exe
File opened (read-only)	\??\O:	HelpMe.exe
File opened (read-only)	\??\E:	1e3a04c6a1b9a3569a656a45fa2ff15a.exe
File opened (read-only)	\??\O:	1e3a04c6a1b9a3569a656a45fa2ff15a.exe
File opened (read-only)	\??\T:	1e3a04c6a1b9a3569a656a45fa2ff15a.exe
File opened (read-only)	\??\L:	HelpMe.exe
File opened (read-only)	\??\G:	1e3a04c6a1b9a3569a656a45fa2ff15a.exe
File opened (read-only)	\??\Q:	1e3a04c6a1b9a3569a656a45fa2ff15a.exe
File opened (read-only)	\??\K:	HelpMe.exe
File opened (read-only)	\??\N:	HelpMe.exe
File opened (read-only)	\??\I:	1e3a04c6a1b9a3569a656a45fa2ff15a.exe
File opened (read-only)	\??\T:	HelpMe.exe
File opened (read-only)	\??\W:	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	1e3a04c6a1b9a3569a656a45fa2ff15a.exe
File opened for modification	C:\AUTORUN.INF	1e3a04c6a1b9a3569a656a45fa2ff15a.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	1e3a04c6a1b9a3569a656a45fa2ff15a.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 2084 wrote to memory of 3064	2084	1e3a04c6a1b9a3569a656a45fa2ff15a.exe	28
PID 2084 wrote to memory of 3064	2084	1e3a04c6a1b9a3569a656a45fa2ff15a.exe	28
PID 2084 wrote to memory of 3064	2084	1e3a04c6a1b9a3569a656a45fa2ff15a.exe	28
PID 2084 wrote to memory of 3064	2084	1e3a04c6a1b9a3569a656a45fa2ff15a.exe	28

C:\Users\Admin\AppData\Local\Temp\1e3a04c6a1b9a3569a656a45fa2ff15a.exe
"C:\Users\Admin\AppData\Local\Temp\1e3a04c6a1b9a3569a656a45fa2ff15a.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:2084
- 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:3064

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

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Downloads

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

Filesize
6.2MB

MD5
d9554c558ed74599095dc2cd5f29916e

SHA1
1326606c483ba836ca724ed51178cea1570594c5

SHA256
84280a70eab85af07157034da5c85d0338b7e26cadadcdf678ddab07b878f3f6

SHA512
7a402388cc8d87eba504e0f926402836ab1f5f46dc9300fc95a51bf33322def4f9ea58c12a5f173a125d1ec57003db67542eb5aed149c226de7ae9f8bcfa7ec5

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

Filesize
1KB

MD5
dec653e9df9448e192c2d4d5311d284b

SHA1
39439d43254ec309ef4863026fdc7a4db06d8bfd

SHA256
b0141428a2cbb63821465af7f23e4501e0c42139923231514d47ab420949d1dd

SHA512
10f3c9e7caac326c692d6b99b0d0daaabef00b846ea0e6f5fe30920fbf6471f61e1be096b00b5f4188e9446629b27fd05bbf9e6548ffd3fac364644a86bb7131

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

Filesize
954B

MD5
3b1a5bb724b05bde4b5d413a64eff870

SHA1
3407352a295509d484a05f099d03c5dfbd91a90e

SHA256
703bb88d6d6d75c6d72d89553545006e69b1206c553889efc2989a46940bc9f3

SHA512
0de903699401caa7ad7324cd04f9b0e1b3fe0ceaf29cad8f79ab6143a705d1134a628f351e9aafbfb3b8aeee4ddbf55bcb5917a12d8b913153abdaf67c06f8b4

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

Filesize
2.4MB

MD5
2b1132fc2cf38b209e7e2da56d9d12d8

SHA1
f53286e74f1e9c281175162a215213f400c43cc2

SHA256
fcd652139cc73cef15e130aafa9a3e88b91c72ba963c5c98ddff96b0b1cf2a1b

SHA512
ead2ed17d07554940abfba8e96a049fe8a605f0d1af4fe678da1d847b185767a05e6a319f00d216ffe33bef2edd4a17f5a8f8c97212e530f38362c3c18f07f15

Download Submit
F:\AUTORUN.INF

Filesize
145B

MD5
ca13857b2fd3895a39f09d9dde3cca97

SHA1
8b78c5b2ec97c372ebdcef92d14b0998f8dd6dd0

SHA256
cfe448b4506a95b33b529efa88f1ac704d8bdf98a941c065650ead27609318ae

SHA512
55e5b5325968d1e5314527fb2d26012f5aae4a1c38e305417be273400cb1c6d0c22b85bddb501d7a5720a3f53bb5caf6ada8a7894232344c4f6c6ef85d226b47

Download Submit
F:\AutoRun.exe

Filesize
4.6MB

MD5
36c41bcc288d08ffb1bdde7d5cbf3d63

SHA1
63fd0ac79e41bd26e0e263aa0a8695e087ec90f9

SHA256
a3145b14781773ec9417b69b60db04bf9ae811514309ddb974ffa5fe3c306968

SHA512
3e598ef8adf46de774b20f7bd6765ae3668d569ff8bc41eb795555b0d2f727e6cccf8b51e2fef0f313fc9e8d6d1770b8d1995b9b1beeac064686143a483c6d31

Download Submit
\Windows\SysWOW64\HelpMe.exe

Filesize
4.8MB

MD5
b39bf86dba551aca11aa373c6780d375

SHA1
138f62686345b11f86271b0b4969c50e6f1e6801

SHA256
1a13fb2588c88c303e9e871ca23a89e8d2dd72b3a699f41d4f8e7f126e8e3130

SHA512
87347e0021539fc5136482e18166eeeff6d36577697b04a4a4776c5bfc3894744a13d30f48bf1662cf7df001894b88be8ca9b418bdfce32d6352f551613979fa

Download Submit
\Windows\SysWOW64\HelpMe.exe

Filesize
2.8MB

MD5
47a97940406217c01978f0f4cb0fe263

SHA1
2a235e623881421da65683a11ced83e7c7c57831

SHA256
d03e67560d9df1676806d628f35d5a756605750c80eb1dc2a51837a3b37c96fc

SHA512
3406fb0718644306392ea77bc4903de44114d319766fe18554bcefac6307d567ae7541bb254b901141f1b5105a1c8f2a342c9394b23b8a78f1ebba47978d4a65

Download Submit
memory/2084-0-0x00000000002A0000-0x00000000002A1000-memory.dmp

Filesize
4KB

Download
memory/2084-236-0x00000000002A0000-0x00000000002A1000-memory.dmp

Filesize
4KB

Download
memory/3064-9-0x0000000000220000-0x0000000000221000-memory.dmp

Filesize
4KB

Download
memory/3064-239-0x0000000000220000-0x0000000000221000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads