f7d4a00e95238423ea0c19e44cef16830b488afb2ac3cbb18c0a1aae3750f88c

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
29/01/2024, 10:03

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General

Target

7f8e93f336b2bf2c99e14ed63228fedc.exe
Size

1.1MB
MD5

7f8e93f336b2bf2c99e14ed63228fedc
SHA1

186e534213f07843e341a69b57f6a6e3c9b9446e
SHA256

f7d4a00e95238423ea0c19e44cef16830b488afb2ac3cbb18c0a1aae3750f88c
SHA512

09d2f22ecb49c4f7880a23a1a0a838d5f8e589dd23d4d5038bb50d3bffe6631881a5b8136604855b826c86c74d0c17875392b61e15031ac4c7160210feccc235
SSDEEP

12288:zMMpXKb0hNGh1kG0HWNAuCsltHlYzU+Wgn:zMMpXS0hN0V0HDIHyos

Score

10^/10

aspackv2 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"	7f8e93f336b2bf2c99e14ed63228fedc.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

ASPack v2.12-2.42 3 IoCs

Detects executables packed with ASPack v2.12-2.42

aspackv2

resource	yara_rule
behavioral1/files/0x000b000000012263-2.dat	aspack_v212_v242
behavioral1/files/0x000700000001422b-38.dat	aspack_v212_v242
behavioral1/files/0x0001000000000026-55.dat	aspack_v212_v242

Drops startup file 3 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Soft.lnk	7f8e93f336b2bf2c99e14ed63228fedc.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	7f8e93f336b2bf2c99e14ed63228fedc.exe

Executes dropped EXE 1 IoCs

pid	Process
2236	HelpMe.exe

Loads dropped DLL 2 IoCs

pid	Process
1364	7f8e93f336b2bf2c99e14ed63228fedc.exe
1364	7f8e93f336b2bf2c99e14ed63228fedc.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)	\??\E:	7f8e93f336b2bf2c99e14ed63228fedc.exe
File opened (read-only)	\??\K:	7f8e93f336b2bf2c99e14ed63228fedc.exe
File opened (read-only)	\??\V:	7f8e93f336b2bf2c99e14ed63228fedc.exe
File opened (read-only)	\??\G:	7f8e93f336b2bf2c99e14ed63228fedc.exe
File opened (read-only)	\??\M:	7f8e93f336b2bf2c99e14ed63228fedc.exe
File opened (read-only)	\??\R:	7f8e93f336b2bf2c99e14ed63228fedc.exe
File opened (read-only)	\??\U:	7f8e93f336b2bf2c99e14ed63228fedc.exe
File opened (read-only)	\??\W:	7f8e93f336b2bf2c99e14ed63228fedc.exe
File opened (read-only)	\??\Z:	7f8e93f336b2bf2c99e14ed63228fedc.exe
File opened (read-only)	\??\J:	HelpMe.exe
File opened (read-only)	\??\N:	HelpMe.exe
File opened (read-only)	\??\O:	HelpMe.exe
File opened (read-only)	\??\T:	HelpMe.exe
File opened (read-only)	\??\U:	HelpMe.exe
File opened (read-only)	\??\X:	HelpMe.exe
File opened (read-only)	\??\J:	7f8e93f336b2bf2c99e14ed63228fedc.exe
File opened (read-only)	\??\N:	7f8e93f336b2bf2c99e14ed63228fedc.exe
File opened (read-only)	\??\S:	7f8e93f336b2bf2c99e14ed63228fedc.exe
File opened (read-only)	\??\I:	HelpMe.exe
File opened (read-only)	\??\K:	HelpMe.exe
File opened (read-only)	\??\Y:	HelpMe.exe
File opened (read-only)	\??\H:	7f8e93f336b2bf2c99e14ed63228fedc.exe
File opened (read-only)	\??\I:	7f8e93f336b2bf2c99e14ed63228fedc.exe
File opened (read-only)	\??\Q:	7f8e93f336b2bf2c99e14ed63228fedc.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)	\??\R:	HelpMe.exe
File opened (read-only)	\??\B:	7f8e93f336b2bf2c99e14ed63228fedc.exe
File opened (read-only)	\??\P:	HelpMe.exe
File opened (read-only)	\??\S:	HelpMe.exe
File opened (read-only)	\??\A:	7f8e93f336b2bf2c99e14ed63228fedc.exe
File opened (read-only)	\??\O:	7f8e93f336b2bf2c99e14ed63228fedc.exe
File opened (read-only)	\??\T:	7f8e93f336b2bf2c99e14ed63228fedc.exe
File opened (read-only)	\??\A:	HelpMe.exe
File opened (read-only)	\??\B:	HelpMe.exe
File opened (read-only)	\??\M:	HelpMe.exe
File opened (read-only)	\??\L:	7f8e93f336b2bf2c99e14ed63228fedc.exe
File opened (read-only)	\??\Y:	7f8e93f336b2bf2c99e14ed63228fedc.exe
File opened (read-only)	\??\G:	HelpMe.exe
File opened (read-only)	\??\V:	HelpMe.exe
File opened (read-only)	\??\W:	HelpMe.exe
File opened (read-only)	\??\Z:	HelpMe.exe
File opened (read-only)	\??\P:	7f8e93f336b2bf2c99e14ed63228fedc.exe
File opened (read-only)	\??\X:	7f8e93f336b2bf2c99e14ed63228fedc.exe
File opened (read-only)	\??\Q:	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	7f8e93f336b2bf2c99e14ed63228fedc.exe
File opened for modification	C:\AUTORUN.INF	7f8e93f336b2bf2c99e14ed63228fedc.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	HelpMe.exe
File created	C:\Windows\SysWOW64\HelpMe.exe	7f8e93f336b2bf2c99e14ed63228fedc.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 1364 wrote to memory of 2236	1364	7f8e93f336b2bf2c99e14ed63228fedc.exe	28
PID 1364 wrote to memory of 2236	1364	7f8e93f336b2bf2c99e14ed63228fedc.exe	28
PID 1364 wrote to memory of 2236	1364	7f8e93f336b2bf2c99e14ed63228fedc.exe	28
PID 1364 wrote to memory of 2236	1364	7f8e93f336b2bf2c99e14ed63228fedc.exe	28

C:\Users\Admin\AppData\Local\Temp\7f8e93f336b2bf2c99e14ed63228fedc.exe
"C:\Users\Admin\AppData\Local\Temp\7f8e93f336b2bf2c99e14ed63228fedc.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:1364
- 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:2236

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-1-5-21-1268429524-3929314613-1992311491-1000\desktop.ini.exe

Filesize
1.1MB

MD5
0c8111da1eb3225397359b01d57513ba

SHA1
553a7480c34e0d220c7a99a590ebac2a480be4eb

SHA256
474968f9755d96658fdbb339d70c1c2a92870d91a6ba7aaba4e55263801e3258

SHA512
a4124d1a39670da8c8f073330bf17127e5c4d3df21c381f8280387b8d8a4f78330a7c3962426289cf8c3d539987ef241f333e50da6031b3592b17d9fe1c8c2b6

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

Filesize
1KB

MD5
3fa5878aa40d31915874ab896f766071

SHA1
81f25a20a7c81c1f1895324940d0362cb5de54fb

SHA256
535e30f090e88097685d10f8efaf38c93826f09c6605639890f31203f703d76d

SHA512
06704aee1e3dd0f3c886cbe754a108ffadf4b1b9e0a1c2bd47431d0cfddc172b48a29c8d13b0ab029f23613512e2024bdc3ab7c3ce8ba56a8dfd7e4976f45ffc

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

Filesize
954B

MD5
44aae7306907d42e838eeeb4c1225b65

SHA1
4909c7e4d7f71dd939e7fd0a9b1a4df7249f5e5d

SHA256
7f279267b559bca261a52e7e1d4c44055a0af08ad503390d9fa77ff98599b8dd

SHA512
06af96085b8f6229b32c4a6020b0024a33f6613847e43ac7fc551232f05245af2bfbabfc9e45371e4d71fba556629ae982aead984202e659f6d1dbe25f6d99be

Download Submit
F:\AUTORUN.INF

Filesize
145B

MD5
ca13857b2fd3895a39f09d9dde3cca97

SHA1
8b78c5b2ec97c372ebdcef92d14b0998f8dd6dd0

SHA256
cfe448b4506a95b33b529efa88f1ac704d8bdf98a941c065650ead27609318ae

SHA512
55e5b5325968d1e5314527fb2d26012f5aae4a1c38e305417be273400cb1c6d0c22b85bddb501d7a5720a3f53bb5caf6ada8a7894232344c4f6c6ef85d226b47

Download Submit
F:\AutoRun.exe

Filesize
1.1MB

MD5
7f8e93f336b2bf2c99e14ed63228fedc

SHA1
186e534213f07843e341a69b57f6a6e3c9b9446e

SHA256
f7d4a00e95238423ea0c19e44cef16830b488afb2ac3cbb18c0a1aae3750f88c

SHA512
09d2f22ecb49c4f7880a23a1a0a838d5f8e589dd23d4d5038bb50d3bffe6631881a5b8136604855b826c86c74d0c17875392b61e15031ac4c7160210feccc235

Download Submit
\Windows\SysWOW64\HelpMe.exe

Filesize
1.1MB

MD5
7930f19c44280f3b5228bff5bb968ce5

SHA1
a4e04359fb5c6e5f59f6881109f58ea6c32ed5d4

SHA256
4cd5b7e79c9958a711b425aeb9e37886c7c9f56bb5e4b708d3b480cd071f39be

SHA512
2347f8539d59119cd80eae40993110c56d54cd51612dec3918bd587720fbf1e8a22903db7afe0711fe4dfa3db7f697277c846c778bccf3a4f841a46e4d612656

Download Submit
memory/1364-0-0x00000000001B0000-0x00000000001B1000-memory.dmp

Filesize
4KB

Download
memory/1364-240-0x00000000001B0000-0x00000000001B1000-memory.dmp

Filesize
4KB

Download
memory/2236-9-0x0000000000230000-0x0000000000231000-memory.dmp

Filesize
4KB

Download
memory/2236-241-0x0000000000230000-0x0000000000231000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads