cc65535243dfd3cd54a9c5ecfcb93c7f918a87c725e9c52925017ab92effe278

Analysis

max time kernel
145s
max time network
126s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
13-07-2024 09:29

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General

Target

1db9ec5678e417eef3d6e080a031c8adfc1fc85127317b952bc33733d93841e0.exe
Size

2.4MB
MD5

84e2bf751724e3b0acc70b67ee1b8e96
SHA1

2e1c9638b022901d67c69ef17c6acd12fd6e493f
SHA256

1db9ec5678e417eef3d6e080a031c8adfc1fc85127317b952bc33733d93841e0
SHA512

56a229897c812cddd7f0b1847cf439f910350aa11138f7165b7c7f697095dfe5ee64e875e4262706c20e7bdbb59a94512386965e83ac9327b0b6967377882aef
SSDEEP

12288:sp4pNfz3ymJnJ8QCFkxCaQTOlPes5Z76k/L/KB8NIpYJTCihq82WFpXKEVFA2MCp:eEtl9mRda12sX7hKB8NIyXbacAfe

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"	HelpMe.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "Explorer.exe HelpMe.exe"	1db9ec5678e417eef3d6e080a031c8adfc1fc85127317b952bc33733d93841e0.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	1db9ec5678e417eef3d6e080a031c8adfc1fc85127317b952bc33733d93841e0.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	1db9ec5678e417eef3d6e080a031c8adfc1fc85127317b952bc33733d93841e0.exe

Executes dropped EXE 1 IoCs

pid	Process
1940	HelpMe.exe

Loads dropped DLL 2 IoCs

pid	Process
2328	1db9ec5678e417eef3d6e080a031c8adfc1fc85127317b952bc33733d93841e0.exe
2328	1db9ec5678e417eef3d6e080a031c8adfc1fc85127317b952bc33733d93841e0.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)	\??\G:	HelpMe.exe
File opened (read-only)	\??\L:	HelpMe.exe
File opened (read-only)	\??\M:	HelpMe.exe
File opened (read-only)	\??\O:	HelpMe.exe
File opened (read-only)	\??\P:	HelpMe.exe
File opened (read-only)	\??\A:	1db9ec5678e417eef3d6e080a031c8adfc1fc85127317b952bc33733d93841e0.exe
File opened (read-only)	\??\H:	1db9ec5678e417eef3d6e080a031c8adfc1fc85127317b952bc33733d93841e0.exe
File opened (read-only)	\??\J:	1db9ec5678e417eef3d6e080a031c8adfc1fc85127317b952bc33733d93841e0.exe
File opened (read-only)	\??\O:	1db9ec5678e417eef3d6e080a031c8adfc1fc85127317b952bc33733d93841e0.exe
File opened (read-only)	\??\R:	1db9ec5678e417eef3d6e080a031c8adfc1fc85127317b952bc33733d93841e0.exe
File opened (read-only)	\??\T:	HelpMe.exe
File opened (read-only)	\??\K:	1db9ec5678e417eef3d6e080a031c8adfc1fc85127317b952bc33733d93841e0.exe
File opened (read-only)	\??\P:	1db9ec5678e417eef3d6e080a031c8adfc1fc85127317b952bc33733d93841e0.exe
File opened (read-only)	\??\N:	HelpMe.exe
File opened (read-only)	\??\E:	1db9ec5678e417eef3d6e080a031c8adfc1fc85127317b952bc33733d93841e0.exe
File opened (read-only)	\??\L:	1db9ec5678e417eef3d6e080a031c8adfc1fc85127317b952bc33733d93841e0.exe
File opened (read-only)	\??\Q:	1db9ec5678e417eef3d6e080a031c8adfc1fc85127317b952bc33733d93841e0.exe
File opened (read-only)	\??\X:	1db9ec5678e417eef3d6e080a031c8adfc1fc85127317b952bc33733d93841e0.exe
File opened (read-only)	\??\S:	HelpMe.exe
File opened (read-only)	\??\U:	HelpMe.exe
File opened (read-only)	\??\B:	HelpMe.exe
File opened (read-only)	\??\E:	HelpMe.exe
File opened (read-only)	\??\Q:	HelpMe.exe
File opened (read-only)	\??\Z:	HelpMe.exe
File opened (read-only)	\??\J:	HelpMe.exe
File opened (read-only)	\??\I:	1db9ec5678e417eef3d6e080a031c8adfc1fc85127317b952bc33733d93841e0.exe
File opened (read-only)	\??\S:	1db9ec5678e417eef3d6e080a031c8adfc1fc85127317b952bc33733d93841e0.exe
File opened (read-only)	\??\U:	1db9ec5678e417eef3d6e080a031c8adfc1fc85127317b952bc33733d93841e0.exe
File opened (read-only)	\??\V:	1db9ec5678e417eef3d6e080a031c8adfc1fc85127317b952bc33733d93841e0.exe
File opened (read-only)	\??\Z:	1db9ec5678e417eef3d6e080a031c8adfc1fc85127317b952bc33733d93841e0.exe
File opened (read-only)	\??\H:	HelpMe.exe
File opened (read-only)	\??\I:	HelpMe.exe
File opened (read-only)	\??\Y:	HelpMe.exe
File opened (read-only)	\??\T:	1db9ec5678e417eef3d6e080a031c8adfc1fc85127317b952bc33733d93841e0.exe
File opened (read-only)	\??\A:	HelpMe.exe
File opened (read-only)	\??\R:	HelpMe.exe
File opened (read-only)	\??\B:	1db9ec5678e417eef3d6e080a031c8adfc1fc85127317b952bc33733d93841e0.exe
File opened (read-only)	\??\G:	1db9ec5678e417eef3d6e080a031c8adfc1fc85127317b952bc33733d93841e0.exe
File opened (read-only)	\??\M:	1db9ec5678e417eef3d6e080a031c8adfc1fc85127317b952bc33733d93841e0.exe
File opened (read-only)	\??\N:	1db9ec5678e417eef3d6e080a031c8adfc1fc85127317b952bc33733d93841e0.exe
File opened (read-only)	\??\W:	1db9ec5678e417eef3d6e080a031c8adfc1fc85127317b952bc33733d93841e0.exe
File opened (read-only)	\??\Y:	1db9ec5678e417eef3d6e080a031c8adfc1fc85127317b952bc33733d93841e0.exe
File opened (read-only)	\??\K:	HelpMe.exe
File opened (read-only)	\??\V:	HelpMe.exe
File opened (read-only)	\??\W:	HelpMe.exe
File opened (read-only)	\??\X:	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	1db9ec5678e417eef3d6e080a031c8adfc1fc85127317b952bc33733d93841e0.exe
File opened for modification	C:\AUTORUN.INF	1db9ec5678e417eef3d6e080a031c8adfc1fc85127317b952bc33733d93841e0.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	1db9ec5678e417eef3d6e080a031c8adfc1fc85127317b952bc33733d93841e0.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 2328 wrote to memory of 1940	2328	1db9ec5678e417eef3d6e080a031c8adfc1fc85127317b952bc33733d93841e0.exe	30
PID 2328 wrote to memory of 1940	2328	1db9ec5678e417eef3d6e080a031c8adfc1fc85127317b952bc33733d93841e0.exe	30
PID 2328 wrote to memory of 1940	2328	1db9ec5678e417eef3d6e080a031c8adfc1fc85127317b952bc33733d93841e0.exe	30
PID 2328 wrote to memory of 1940	2328	1db9ec5678e417eef3d6e080a031c8adfc1fc85127317b952bc33733d93841e0.exe	30

C:\Users\Admin\AppData\Local\Temp\1db9ec5678e417eef3d6e080a031c8adfc1fc85127317b952bc33733d93841e0.exe
"C:\Users\Admin\AppData\Local\Temp\1db9ec5678e417eef3d6e080a031c8adfc1fc85127317b952bc33733d93841e0.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:2328
- 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:1940

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-1-5-21-940600906-3464502421-4240639183-1000\desktop.ini.exe

Filesize
2.4MB

MD5
62360821c3181e122ede63c9b70479fd

SHA1
34168ccbf2a59535dfda4152bce8052aa4866757

SHA256
6418956ea548805ccc105256ed1036abfd649b839841bdd056c532f0889a4b0b

SHA512
2370b36ca57760578a2109401af097f262ed75c8df94287debaa307075d53ed47eccd976fa3b69f41f35612baf3a24d0fb779a384898e7bf73344334ad06f433

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

Filesize
1KB

MD5
64cc908739d3c102ec19e8c54d378260

SHA1
b3763dd6cd76db54c3c3a8fd17fafd0a625daa2d

SHA256
7d1ed7b9082114dc7972ce6a99089950684f74280aa049673726e567c1543430

SHA512
4c5b34bf80b746ddefeed0e75e0dd92989fce78f35d277574f4b71f039a72c787a7640e4e65c90fd019e57247a96eaca30daf9a77542e5a939e5d8117745f0c6

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

Filesize
950B

MD5
91120391b9e6d6afcfff91a999e43557

SHA1
ee322419a189c7a567cfba3093cc10d0dad6353e

SHA256
9b96c684f2275d342f728bbf09f5ba5dfb422fd0c4e3b7af42cf0202c6fbfe11

SHA512
a9cb6650dcccacc4860d75a87d021ecd52012f4cd6a204fb730aa15b9ed70dc4677fdfbe6d83a53d41bece4827e9d4928194127764062caeff61b489ab36cf65

Download Submit
F:\AUTORUN.INF

Filesize
145B

MD5
ca13857b2fd3895a39f09d9dde3cca97

SHA1
8b78c5b2ec97c372ebdcef92d14b0998f8dd6dd0

SHA256
cfe448b4506a95b33b529efa88f1ac704d8bdf98a941c065650ead27609318ae

SHA512
55e5b5325968d1e5314527fb2d26012f5aae4a1c38e305417be273400cb1c6d0c22b85bddb501d7a5720a3f53bb5caf6ada8a7894232344c4f6c6ef85d226b47

Download Submit
F:\AutoRun.exe

Filesize
2.4MB

MD5
84e2bf751724e3b0acc70b67ee1b8e96

SHA1
2e1c9638b022901d67c69ef17c6acd12fd6e493f

SHA256
1db9ec5678e417eef3d6e080a031c8adfc1fc85127317b952bc33733d93841e0

SHA512
56a229897c812cddd7f0b1847cf439f910350aa11138f7165b7c7f697095dfe5ee64e875e4262706c20e7bdbb59a94512386965e83ac9327b0b6967377882aef

Download Submit
\Windows\SysWOW64\HelpMe.exe

Filesize
2.4MB

MD5
3186b2fa1bccd38746b3fa55865556ce

SHA1
37c87959085f3f2903592330b8bb745d8917c79f

SHA256
7cdbe203acf89434221c69804bf8bd1e44b413376fbb509301c80a84d73e3ee9

SHA512
81b61776570826a77acba1f44ab6cb5fb64721a8d2848521b8b394b3d957840261becb7bf914ac4e64e8f68f1c4cb2a79280b375f0f63aa1dbde69b926800dcb

Download Submit
memory/1940-14-0x0000000000220000-0x0000000000221000-memory.dmp

Filesize
4KB

Download
memory/1940-12-0x0000000000400000-0x000000000047B000-memory.dmp

Filesize
492KB

Download
memory/1940-241-0x0000000000400000-0x000000000047B000-memory.dmp

Filesize
492KB

Download
memory/2328-11-0x0000000002F30000-0x0000000002FAB000-memory.dmp

Filesize
492KB

Download
memory/2328-0-0x0000000000400000-0x000000000047B000-memory.dmp

Filesize
492KB

Download
memory/2328-5-0x0000000002F30000-0x0000000002FAB000-memory.dmp

Filesize
492KB

Download
memory/2328-1-0x0000000000220000-0x0000000000221000-memory.dmp

Filesize
4KB

Download
memory/2328-232-0x0000000000400000-0x000000000047B000-memory.dmp

Filesize
492KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads