3f1e50578251b3285556a1498f3c958c8470dc98387eb595243e331084d353b4

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
30/12/2023, 22:11

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General

Target

1e12f76b8242600b220cc17e8180f56f.exe
Size

1.1MB
MD5

1e12f76b8242600b220cc17e8180f56f
SHA1

298bb10733b96d4cb3aeedf9eff63482fb61aa89
SHA256

3f1e50578251b3285556a1498f3c958c8470dc98387eb595243e331084d353b4
SHA512

2f1a17408283868aac7284c9a37403daa5fe8b022b29121b84b7bb2650d3dddccaa0b8dd04c1e63f24f4fdf5e5f7dbb81b4d041f96d258e0896769133ced7e46
SSDEEP

6144:LiMmXRH6pXfSb0ceR/VFAHh1kgcs0HW1kyApHhP+gDzvRx:5MMpXKb0hNGh1kG0HWnALbx

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"	1e12f76b8242600b220cc17e8180f56f.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/0x000b000000012238-2.dat	aspack_v212_v242
behavioral1/files/0x000700000001655c-42.dat	aspack_v212_v242
behavioral1/files/0x0001000000000026-59.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	1e12f76b8242600b220cc17e8180f56f.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	1e12f76b8242600b220cc17e8180f56f.exe

Executes dropped EXE 1 IoCs

pid	Process
2312	HelpMe.exe

Loads dropped DLL 2 IoCs

pid	Process
2780	1e12f76b8242600b220cc17e8180f56f.exe
2780	1e12f76b8242600b220cc17e8180f56f.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:	1e12f76b8242600b220cc17e8180f56f.exe
File opened (read-only)	\??\X:	1e12f76b8242600b220cc17e8180f56f.exe
File opened (read-only)	\??\A:	HelpMe.exe
File opened (read-only)	\??\E:	HelpMe.exe
File opened (read-only)	\??\G:	HelpMe.exe
File opened (read-only)	\??\O:	HelpMe.exe
File opened (read-only)	\??\T:	HelpMe.exe
File opened (read-only)	\??\N:	1e12f76b8242600b220cc17e8180f56f.exe
File opened (read-only)	\??\Z:	HelpMe.exe
File opened (read-only)	\??\G:	1e12f76b8242600b220cc17e8180f56f.exe
File opened (read-only)	\??\J:	1e12f76b8242600b220cc17e8180f56f.exe
File opened (read-only)	\??\L:	1e12f76b8242600b220cc17e8180f56f.exe
File opened (read-only)	\??\Q:	1e12f76b8242600b220cc17e8180f56f.exe
File opened (read-only)	\??\Z:	1e12f76b8242600b220cc17e8180f56f.exe
File opened (read-only)	\??\B:	HelpMe.exe
File opened (read-only)	\??\L:	HelpMe.exe
File opened (read-only)	\??\E:	1e12f76b8242600b220cc17e8180f56f.exe
File opened (read-only)	\??\Q:	HelpMe.exe
File opened (read-only)	\??\R:	1e12f76b8242600b220cc17e8180f56f.exe
File opened (read-only)	\??\M:	1e12f76b8242600b220cc17e8180f56f.exe
File opened (read-only)	\??\N:	HelpMe.exe
File opened (read-only)	\??\P:	HelpMe.exe
File opened (read-only)	\??\R:	HelpMe.exe
File opened (read-only)	\??\B:	1e12f76b8242600b220cc17e8180f56f.exe
File opened (read-only)	\??\I:	1e12f76b8242600b220cc17e8180f56f.exe
File opened (read-only)	\??\O:	1e12f76b8242600b220cc17e8180f56f.exe
File opened (read-only)	\??\W:	1e12f76b8242600b220cc17e8180f56f.exe
File opened (read-only)	\??\Y:	1e12f76b8242600b220cc17e8180f56f.exe
File opened (read-only)	\??\Y:	HelpMe.exe
File opened (read-only)	\??\H:	1e12f76b8242600b220cc17e8180f56f.exe
File opened (read-only)	\??\U:	1e12f76b8242600b220cc17e8180f56f.exe
File opened (read-only)	\??\K:	HelpMe.exe
File opened (read-only)	\??\V:	HelpMe.exe
File opened (read-only)	\??\X:	HelpMe.exe
File opened (read-only)	\??\T:	1e12f76b8242600b220cc17e8180f56f.exe
File opened (read-only)	\??\H:	HelpMe.exe
File opened (read-only)	\??\M:	HelpMe.exe
File opened (read-only)	\??\S:	HelpMe.exe
File opened (read-only)	\??\U:	HelpMe.exe
File opened (read-only)	\??\V:	1e12f76b8242600b220cc17e8180f56f.exe
File opened (read-only)	\??\K:	1e12f76b8242600b220cc17e8180f56f.exe
File opened (read-only)	\??\S:	1e12f76b8242600b220cc17e8180f56f.exe
File opened (read-only)	\??\I:	HelpMe.exe
File opened (read-only)	\??\J:	HelpMe.exe
File opened (read-only)	\??\W:	HelpMe.exe
File opened (read-only)	\??\A:	1e12f76b8242600b220cc17e8180f56f.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	1e12f76b8242600b220cc17e8180f56f.exe
File opened for modification	C:\AUTORUN.INF	1e12f76b8242600b220cc17e8180f56f.exe
File opened for modification	F:\AUTORUN.INF	HelpMe.exe

Drops file in System32 directory 4 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\HelpMe.exe	1e12f76b8242600b220cc17e8180f56f.exe
File created	C:\Windows\SysWOW64\HelpMe.exe	HelpMe.exe
File opened for modification	C:\Windows\SysWOW64\HelpMe.exe	HelpMe.exe
File created	C:\Windows\SysWOW64\notepad.exe.exe	HelpMe.exe

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\Internet Explorer\iexplore.exe.exe	HelpMe.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2312	HelpMe.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2780 wrote to memory of 2312	2780	1e12f76b8242600b220cc17e8180f56f.exe	28
PID 2780 wrote to memory of 2312	2780	1e12f76b8242600b220cc17e8180f56f.exe	28
PID 2780 wrote to memory of 2312	2780	1e12f76b8242600b220cc17e8180f56f.exe	28
PID 2780 wrote to memory of 2312	2780	1e12f76b8242600b220cc17e8180f56f.exe	28

C:\Users\Admin\AppData\Local\Temp\1e12f76b8242600b220cc17e8180f56f.exe
"C:\Users\Admin\AppData\Local\Temp\1e12f76b8242600b220cc17e8180f56f.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:2780
- 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
  - Drops file in Program Files directory
  - Suspicious behavior: EnumeratesProcesses
  PID:2312

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-1-5-21-3427588347-1492276948-3422228430-1000\desktop.ini.exe

Filesize
1.1MB

MD5
c00f3f4f90b6d604a455e2e269f1fa9b

SHA1
6443eb982a60e2e9749c86a5dd08e7973ed4ced6

SHA256
98cbaaf3dfe4515b223389a1ffad33c65c1c37fd132826b8eab83add4cd8725c

SHA512
8080d01725b57af841cadd83113da6d2b95aa434b5cd4d36ff472f8d05c14ec7119a8fc716e3be6851ff528378992acb7254c62556610e4990144cd184de8f5a

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

Filesize
1KB

MD5
ef8f623931f69899913ce7c022af2c8f

SHA1
7cc8024512de179854eefd501f3c576ecb30b132

SHA256
fa06e47096df80024980e05bbd3e1d4f1475e4b2441c7f653f0f3670850174b9

SHA512
c802c8c62878d90fb73946718798d92226c2f3509c45ad6708ccf7f4e554ffa300b8de893afee74b55ee2ddee632f77a975469ad31bd25a655cd67a41b72587b

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

Filesize
954B

MD5
aa51d9396e6d4d1e58156803de66df99

SHA1
29d38e75bd4b9bd82b924b62a9489430ea425ca6

SHA256
4b88e37fd43fa103a959a1128f36d0c7914afc60dbccba7bee8502bedbbe0fe2

SHA512
7accbcf8b01cc683f534e8063cdd16b9742181271e94b3ab01fc3885915fec0fff8a731b478024fa093344df9da2fe793ade92496321c3336f19a15da8de1e9f

Download Submit
F:\AUTORUN.INF

Filesize
145B

MD5
ca13857b2fd3895a39f09d9dde3cca97

SHA1
8b78c5b2ec97c372ebdcef92d14b0998f8dd6dd0

SHA256
cfe448b4506a95b33b529efa88f1ac704d8bdf98a941c065650ead27609318ae

SHA512
55e5b5325968d1e5314527fb2d26012f5aae4a1c38e305417be273400cb1c6d0c22b85bddb501d7a5720a3f53bb5caf6ada8a7894232344c4f6c6ef85d226b47

Download Submit
F:\AutoRun.exe

Filesize
1.1MB

MD5
1e12f76b8242600b220cc17e8180f56f

SHA1
298bb10733b96d4cb3aeedf9eff63482fb61aa89

SHA256
3f1e50578251b3285556a1498f3c958c8470dc98387eb595243e331084d353b4

SHA512
2f1a17408283868aac7284c9a37403daa5fe8b022b29121b84b7bb2650d3dddccaa0b8dd04c1e63f24f4fdf5e5f7dbb81b4d041f96d258e0896769133ced7e46

Download Submit
\Windows\SysWOW64\HelpMe.exe

Filesize
1.1MB

MD5
9777b4264fc449b6ae824e858ea8f135

SHA1
2d1c59f7bb3b8bc224127f77a4ccfda5f800e636

SHA256
1239279f5d80640f5542229eed44880ceb47d8871dd091e62eaf3167c14ff180

SHA512
1e810e4aa67395d469e4743a0b46c8808fbc30324b1ee2a0393ee47fd1edbc4d3f63908a29ba1196ccbdcd9503fbb1afc159097623ed77a23aa7c87d9277deea

Download Submit
memory/2312-9-0x0000000000220000-0x0000000000221000-memory.dmp

Filesize
4KB

Download
memory/2312-245-0x0000000000220000-0x0000000000221000-memory.dmp

Filesize
4KB

Download
memory/2780-0-0x0000000000220000-0x0000000000221000-memory.dmp

Filesize
4KB

Download
memory/2780-244-0x0000000000220000-0x0000000000221000-memory.dmp

Filesize
4KB

Download