d27ad98101b3b0988b85f0dd6a21c319faa5a9a9d8cbd1a2d5f414dbddca05dd

Analysis

max time kernel
145s
max time network
120s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
26-12-2023 14:10

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General

Target

7495e5ae70fda52eb0f4da21ff6768a3.exe
Size

1.1MB
MD5

7495e5ae70fda52eb0f4da21ff6768a3
SHA1

f288ece13d0d1811e54222e550c716ac9f85a55b
SHA256

d27ad98101b3b0988b85f0dd6a21c319faa5a9a9d8cbd1a2d5f414dbddca05dd
SHA512

444a7520c1bb0c2ef126ea7431eb71ad2f139cd1e424570fbe0a360748a7014c3d7ed139a8a6e5c7d567befeb21f8e607657874ae4d992504d4a1ae9883c1484
SSDEEP

12288:5MMpXKb0hNGh1kG0HWnAL7MMpXKb0hNGh1kG0HWnAL4:5MMpXS0hN0V0H7MMpXS0hN0V0H4

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"	7495e5ae70fda52eb0f4da21ff6768a3.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/0x000b0000000139e0-2.dat	aspack_v212_v242
behavioral1/files/0x0008000000016287-38.dat	aspack_v212_v242
behavioral1/files/0x0001000000000026-55.dat	aspack_v212_v242

Drops startup file 3 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Soft.lnk	7495e5ae70fda52eb0f4da21ff6768a3.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Soft.lnk	7495e5ae70fda52eb0f4da21ff6768a3.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Soft.lnk	HelpMe.exe

Executes dropped EXE 1 IoCs

pid	Process
2272	HelpMe.exe

Loads dropped DLL 2 IoCs

pid	Process
2320	7495e5ae70fda52eb0f4da21ff6768a3.exe
2320	7495e5ae70fda52eb0f4da21ff6768a3.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)	\??\X:	7495e5ae70fda52eb0f4da21ff6768a3.exe
File opened (read-only)	\??\B:	HelpMe.exe
File opened (read-only)	\??\G:	HelpMe.exe
File opened (read-only)	\??\I:	HelpMe.exe
File opened (read-only)	\??\M:	HelpMe.exe
File opened (read-only)	\??\R:	HelpMe.exe
File opened (read-only)	\??\J:	7495e5ae70fda52eb0f4da21ff6768a3.exe
File opened (read-only)	\??\N:	7495e5ae70fda52eb0f4da21ff6768a3.exe
File opened (read-only)	\??\T:	7495e5ae70fda52eb0f4da21ff6768a3.exe
File opened (read-only)	\??\K:	7495e5ae70fda52eb0f4da21ff6768a3.exe
File opened (read-only)	\??\R:	7495e5ae70fda52eb0f4da21ff6768a3.exe
File opened (read-only)	\??\Z:	HelpMe.exe
File opened (read-only)	\??\B:	7495e5ae70fda52eb0f4da21ff6768a3.exe
File opened (read-only)	\??\W:	7495e5ae70fda52eb0f4da21ff6768a3.exe
File opened (read-only)	\??\S:	7495e5ae70fda52eb0f4da21ff6768a3.exe
File opened (read-only)	\??\Y:	7495e5ae70fda52eb0f4da21ff6768a3.exe
File opened (read-only)	\??\E:	HelpMe.exe
File opened (read-only)	\??\U:	HelpMe.exe
File opened (read-only)	\??\A:	7495e5ae70fda52eb0f4da21ff6768a3.exe
File opened (read-only)	\??\M:	7495e5ae70fda52eb0f4da21ff6768a3.exe
File opened (read-only)	\??\P:	7495e5ae70fda52eb0f4da21ff6768a3.exe
File opened (read-only)	\??\H:	HelpMe.exe
File opened (read-only)	\??\L:	HelpMe.exe
File opened (read-only)	\??\N:	HelpMe.exe
File opened (read-only)	\??\O:	HelpMe.exe
File opened (read-only)	\??\W:	HelpMe.exe
File opened (read-only)	\??\H:	7495e5ae70fda52eb0f4da21ff6768a3.exe
File opened (read-only)	\??\O:	7495e5ae70fda52eb0f4da21ff6768a3.exe
File opened (read-only)	\??\X:	HelpMe.exe
File opened (read-only)	\??\Z:	7495e5ae70fda52eb0f4da21ff6768a3.exe
File opened (read-only)	\??\J:	HelpMe.exe
File opened (read-only)	\??\V:	HelpMe.exe
File opened (read-only)	\??\L:	7495e5ae70fda52eb0f4da21ff6768a3.exe
File opened (read-only)	\??\U:	7495e5ae70fda52eb0f4da21ff6768a3.exe
File opened (read-only)	\??\P:	HelpMe.exe
File opened (read-only)	\??\Q:	HelpMe.exe
File opened (read-only)	\??\T:	HelpMe.exe
File opened (read-only)	\??\E:	7495e5ae70fda52eb0f4da21ff6768a3.exe
File opened (read-only)	\??\A:	HelpMe.exe
File opened (read-only)	\??\Q:	7495e5ae70fda52eb0f4da21ff6768a3.exe
File opened (read-only)	\??\V:	7495e5ae70fda52eb0f4da21ff6768a3.exe
File opened (read-only)	\??\K:	HelpMe.exe
File opened (read-only)	\??\S:	HelpMe.exe
File opened (read-only)	\??\Y:	HelpMe.exe
File opened (read-only)	\??\G:	7495e5ae70fda52eb0f4da21ff6768a3.exe
File opened (read-only)	\??\I:	7495e5ae70fda52eb0f4da21ff6768a3.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	7495e5ae70fda52eb0f4da21ff6768a3.exe
File opened for modification	C:\AUTORUN.INF	7495e5ae70fda52eb0f4da21ff6768a3.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	7495e5ae70fda52eb0f4da21ff6768a3.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 2320 wrote to memory of 2272	2320	7495e5ae70fda52eb0f4da21ff6768a3.exe	28
PID 2320 wrote to memory of 2272	2320	7495e5ae70fda52eb0f4da21ff6768a3.exe	28
PID 2320 wrote to memory of 2272	2320	7495e5ae70fda52eb0f4da21ff6768a3.exe	28
PID 2320 wrote to memory of 2272	2320	7495e5ae70fda52eb0f4da21ff6768a3.exe	28

C:\Users\Admin\AppData\Local\Temp\7495e5ae70fda52eb0f4da21ff6768a3.exe
"C:\Users\Admin\AppData\Local\Temp\7495e5ae70fda52eb0f4da21ff6768a3.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:2320
- 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:2272

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-1-5-21-3627615824-4061627003-3019543961-1000\desktop.ini.exe

Filesize
1.1MB

MD5
64841322ebb194682b0db062db4a7109

SHA1
e7303a64015fe5ee1d3dff9a143bd3c6ce8b279d

SHA256
bdf1872087019206f6ace75945c7025626b1cc24f18108610b5d5e09526590db

SHA512
af69751237862faa41120ae8b9cf374b503bf9597fb06c1fbd82aa6f2b953f1ed076d6f750cf3e06fda341f2358ea51a837a7ceaee10a4d4d07258f7cefaca2d

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

Filesize
1KB

MD5
aa20d14c5a9e04d606b2250a4e4d7ca3

SHA1
d5589b7152175c67017c7e1b1af6e3a82c9a42e9

SHA256
d20f112cace807898bcabb734a6c22d8c8c23860e99dec96338f8f9d47e37ee5

SHA512
17d5f565f8deb408e5fb0d65b61f1ad68d10b34e0d3a4bbb4f56ebc470ad8d88b4baf985fa1d5bd8a136909cbe341634686bab1dff9acc95c4af793d42e41a78

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

Filesize
954B

MD5
dcae2a083170c7132e20b7f09bb3f42a

SHA1
55d2dc44631de329b524debdc7e89c94a85eaec3

SHA256
dd85144ebf507254d9debfb4b21e55644664421212e9d9677a70be3757cf2441

SHA512
d45ef5ba6590622db09fdeb90895faabe2afa2d313f95cbcbf93044d89f1031728144c9ff9128f2f8aa6736ea9b492281af5a9106c0f2f0fe65c7171dce9cfef

Download Submit
F:\AUTORUN.INF

Filesize
145B

MD5
ca13857b2fd3895a39f09d9dde3cca97

SHA1
8b78c5b2ec97c372ebdcef92d14b0998f8dd6dd0

SHA256
cfe448b4506a95b33b529efa88f1ac704d8bdf98a941c065650ead27609318ae

SHA512
55e5b5325968d1e5314527fb2d26012f5aae4a1c38e305417be273400cb1c6d0c22b85bddb501d7a5720a3f53bb5caf6ada8a7894232344c4f6c6ef85d226b47

Download Submit
F:\AutoRun.exe

Filesize
1.1MB

MD5
7495e5ae70fda52eb0f4da21ff6768a3

SHA1
f288ece13d0d1811e54222e550c716ac9f85a55b

SHA256
d27ad98101b3b0988b85f0dd6a21c319faa5a9a9d8cbd1a2d5f414dbddca05dd

SHA512
444a7520c1bb0c2ef126ea7431eb71ad2f139cd1e424570fbe0a360748a7014c3d7ed139a8a6e5c7d567befeb21f8e607657874ae4d992504d4a1ae9883c1484

Download Submit
\Windows\SysWOW64\HelpMe.exe

Filesize
1.1MB

MD5
8dcf1d3cf8a65044536cf9dc94062acc

SHA1
1aeedf58783fab1904ccac3b7f2216925d2f9612

SHA256
3622ddcb572a10fd37cc0ec4c5d679755a41cefb03c41e479372c5752a7039f0

SHA512
c3df6e664d338b59279919a8769a91b3359bcb2ab0fd5c303b6b5140867e6063e9ebfbbecab1e400f32da17cdb8f95a7f40941ff6b3a159c0ef3ec9c559e4c5f

Download Submit
memory/2272-10-0x0000000000220000-0x0000000000221000-memory.dmp

Filesize
4KB

Download
memory/2320-0-0x00000000001B0000-0x00000000001B1000-memory.dmp

Filesize
4KB

Download
memory/2320-240-0x00000000001B0000-0x00000000001B1000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads