c85e9d8b5ad00bee5d4252f36f6596391df2ad2183fec93495086bedff7d971e

Analysis

max time kernel
146s
max time network
123s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
15-03-2024 01:30

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General

Target

ca228795e828f8502ef63d1eb3e010cd.exe
Size

2.2MB
MD5

ca228795e828f8502ef63d1eb3e010cd
SHA1

8e83715b82711016200693d7308052b78fd01ae5
SHA256

c85e9d8b5ad00bee5d4252f36f6596391df2ad2183fec93495086bedff7d971e
SHA512

db9a32ead99eff1daf0a8fd2da1c2cfd980bb7a2f9584072f5e532d98d141819fd11230cf864cdba7cef17a8244abb209b88280a72f4b90c95ac6984c2666a96
SSDEEP

6144:LiMmXRH6pXfSb0ceR/VFAHh1kgcs0HW1kyApHhP+gDzvR+/WOcPf7SLrffMWC:5MMpXKb0hNGh1kG0HWnALb+/KUgWC

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"	ca228795e828f8502ef63d1eb3e010cd.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/0x000b000000012256-2.dat	aspack_v212_v242
behavioral1/files/0x0037000000016350-38.dat	aspack_v212_v242
behavioral1/files/0x0001000000000026-52.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	ca228795e828f8502ef63d1eb3e010cd.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	ca228795e828f8502ef63d1eb3e010cd.exe

Executes dropped EXE 1 IoCs

pid	Process
2236	HelpMe.exe

Loads dropped DLL 2 IoCs

pid	Process
2100	ca228795e828f8502ef63d1eb3e010cd.exe
2100	ca228795e828f8502ef63d1eb3e010cd.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)	\??\N:	ca228795e828f8502ef63d1eb3e010cd.exe
File opened (read-only)	\??\Q:	HelpMe.exe
File opened (read-only)	\??\L:	ca228795e828f8502ef63d1eb3e010cd.exe
File opened (read-only)	\??\R:	ca228795e828f8502ef63d1eb3e010cd.exe
File opened (read-only)	\??\W:	ca228795e828f8502ef63d1eb3e010cd.exe
File opened (read-only)	\??\I:	HelpMe.exe
File opened (read-only)	\??\J:	HelpMe.exe
File opened (read-only)	\??\U:	HelpMe.exe
File opened (read-only)	\??\X:	HelpMe.exe
File opened (read-only)	\??\Z:	HelpMe.exe
File opened (read-only)	\??\A:	ca228795e828f8502ef63d1eb3e010cd.exe
File opened (read-only)	\??\G:	ca228795e828f8502ef63d1eb3e010cd.exe
File opened (read-only)	\??\K:	ca228795e828f8502ef63d1eb3e010cd.exe
File opened (read-only)	\??\X:	ca228795e828f8502ef63d1eb3e010cd.exe
File opened (read-only)	\??\Y:	HelpMe.exe
File opened (read-only)	\??\B:	ca228795e828f8502ef63d1eb3e010cd.exe
File opened (read-only)	\??\I:	ca228795e828f8502ef63d1eb3e010cd.exe
File opened (read-only)	\??\V:	ca228795e828f8502ef63d1eb3e010cd.exe
File opened (read-only)	\??\Y:	ca228795e828f8502ef63d1eb3e010cd.exe
File opened (read-only)	\??\L:	HelpMe.exe
File opened (read-only)	\??\M:	HelpMe.exe
File opened (read-only)	\??\V:	HelpMe.exe
File opened (read-only)	\??\E:	ca228795e828f8502ef63d1eb3e010cd.exe
File opened (read-only)	\??\M:	ca228795e828f8502ef63d1eb3e010cd.exe
File opened (read-only)	\??\P:	ca228795e828f8502ef63d1eb3e010cd.exe
File opened (read-only)	\??\Q:	ca228795e828f8502ef63d1eb3e010cd.exe
File opened (read-only)	\??\O:	HelpMe.exe
File opened (read-only)	\??\P:	HelpMe.exe
File opened (read-only)	\??\T:	HelpMe.exe
File opened (read-only)	\??\W:	HelpMe.exe
File opened (read-only)	\??\J:	ca228795e828f8502ef63d1eb3e010cd.exe
File opened (read-only)	\??\B:	HelpMe.exe
File opened (read-only)	\??\G:	HelpMe.exe
File opened (read-only)	\??\K:	HelpMe.exe
File opened (read-only)	\??\N:	HelpMe.exe
File opened (read-only)	\??\U:	ca228795e828f8502ef63d1eb3e010cd.exe
File opened (read-only)	\??\O:	ca228795e828f8502ef63d1eb3e010cd.exe
File opened (read-only)	\??\S:	ca228795e828f8502ef63d1eb3e010cd.exe
File opened (read-only)	\??\E:	HelpMe.exe
File opened (read-only)	\??\H:	HelpMe.exe
File opened (read-only)	\??\R:	HelpMe.exe
File opened (read-only)	\??\S:	HelpMe.exe
File opened (read-only)	\??\H:	ca228795e828f8502ef63d1eb3e010cd.exe
File opened (read-only)	\??\Z:	ca228795e828f8502ef63d1eb3e010cd.exe
File opened (read-only)	\??\A:	HelpMe.exe
File opened (read-only)	\??\T:	ca228795e828f8502ef63d1eb3e010cd.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	HelpMe.exe
File opened for modification	F:\AUTORUN.INF	ca228795e828f8502ef63d1eb3e010cd.exe
File opened for modification	C:\AUTORUN.INF	ca228795e828f8502ef63d1eb3e010cd.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\HelpMe.exe	ca228795e828f8502ef63d1eb3e010cd.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 2100 wrote to memory of 2236	2100	ca228795e828f8502ef63d1eb3e010cd.exe	28
PID 2100 wrote to memory of 2236	2100	ca228795e828f8502ef63d1eb3e010cd.exe	28
PID 2100 wrote to memory of 2236	2100	ca228795e828f8502ef63d1eb3e010cd.exe	28
PID 2100 wrote to memory of 2236	2100	ca228795e828f8502ef63d1eb3e010cd.exe	28

C:\Users\Admin\AppData\Local\Temp\ca228795e828f8502ef63d1eb3e010cd.exe
"C:\Users\Admin\AppData\Local\Temp\ca228795e828f8502ef63d1eb3e010cd.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:2100
- 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-1-5-21-3787592910-3720486031-2929222812-1000\desktop.ini.exe

Filesize
2.2MB

MD5
724f645c62df9303a174a6ee5a6144ef

SHA1
abd5c181aaf2b7dbcf44d48eb64fd503b9758de1

SHA256
7fda5a57f6b9b23986fb2f40d19b13cfeaf0b575101f5b7268a336d3b7df47ce

SHA512
4523855dfe9ba18cc678532f0096fab7fdc578ada90f012eeb3126301e618425bb09c9c7a05088d9f792b4ac2168831e29833535dd9b5863191bbe8618bf3948

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

Filesize
1KB

MD5
4d31fb3a1b4166b9fd0cc6aed84fcc2c

SHA1
40fab1f14920e920fd3a2e35953645c4b51ad5ef

SHA256
15f9523af8291dde2b5769270879a1acb375e7610e5c09725ea5559a106c6f73

SHA512
daf857979eaf92370cabc3e191586ede0ff3b45eb3f3549ada7538e5923da87286da585dd0c894f36ec0f1911d73d85c082d1c77dc1a4a9bfc24fe30de2da42a

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

Filesize
1KB

MD5
6a3d694a6872387361f04ffa7b3bfe50

SHA1
dcc10989f7062ad5fc404b5ed211e26b44ecaa0f

SHA256
be2eff777d1f266d80ba228a8a61ab99ee019846b679442388abb8f1c7f45952

SHA512
663b81fd8a7aa36cfc6a0820c97e5a5561a27631f52b93b703b0f5714f91f02abffc6b0fe0e1d879a0e1dbb08a9d39fa40e44d5ac944c9a08f144241f4032e19

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

Filesize
954B

MD5
616c34d878c7311d94317b0bc782826e

SHA1
0acb4de5a810d4910180148d73af9697d6b00b16

SHA256
7fdbc5ca89cb8f39f82be92897791f02927e90174f128305e0142754fd1921c0

SHA512
e7c534384d45215744fd9ab8adcb8c14324bf0a2257b15430cc61d90689c2c2cac7438f6b5698fb767b5bc3ee27bff4a09d0e8f403499fcfdf0d22c74598a858

Download Submit
F:\AUTORUN.INF

Filesize
145B

MD5
ca13857b2fd3895a39f09d9dde3cca97

SHA1
8b78c5b2ec97c372ebdcef92d14b0998f8dd6dd0

SHA256
cfe448b4506a95b33b529efa88f1ac704d8bdf98a941c065650ead27609318ae

SHA512
55e5b5325968d1e5314527fb2d26012f5aae4a1c38e305417be273400cb1c6d0c22b85bddb501d7a5720a3f53bb5caf6ada8a7894232344c4f6c6ef85d226b47

Download Submit
F:\AutoRun.exe

Filesize
2.2MB

MD5
ca228795e828f8502ef63d1eb3e010cd

SHA1
8e83715b82711016200693d7308052b78fd01ae5

SHA256
c85e9d8b5ad00bee5d4252f36f6596391df2ad2183fec93495086bedff7d971e

SHA512
db9a32ead99eff1daf0a8fd2da1c2cfd980bb7a2f9584072f5e532d98d141819fd11230cf864cdba7cef17a8244abb209b88280a72f4b90c95ac6984c2666a96

Download Submit
\Windows\SysWOW64\HelpMe.exe

Filesize
2.2MB

MD5
df0f12e033829ca89bedcbce612651c6

SHA1
29978392a30e5ca702d2a4aeb50e82ad3850f56d

SHA256
fbc226d92ee36bbabc0d70896809461eded64ab2fc58c6eab236c73b25fdf9e1

SHA512
446424aab66ba0addd006099859d263f1f4631a4757a0f72b6e0ec1b0bdc2b65a9c3627803a646bf3506f4e6311be3e456a73fb77d3c9f7e9bf278cecf6c75d2

Download Submit
memory/2100-0-0x0000000000230000-0x0000000000231000-memory.dmp

Filesize
4KB

Download
memory/2100-77-0x0000000000230000-0x0000000000231000-memory.dmp

Filesize
4KB

Download
memory/2236-9-0x00000000001B0000-0x00000000001B1000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads