8ab2b12fc4468e752db72f828f2b0d676574a7c84212785193286d7748be6199

Analysis

max time kernel
145s
max time network
121s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
28-12-2023 23:16

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General

Target

ff491936f7b08fc81b348605bffeecfd.exe
Size

1.4MB
MD5

ff491936f7b08fc81b348605bffeecfd
SHA1

1464a3b886d2d047bece397e376cee756c1f8479
SHA256

8ab2b12fc4468e752db72f828f2b0d676574a7c84212785193286d7748be6199
SHA512

568874092a7cc5441799fb45213bbc3f58f53903a6fb1fae44528deac8bebbfd68f2613974e37ad81c7f11b9e06a2e785e06ca5ee47a1e0eb76f105f0a4824d7
SSDEEP

6144:ZiMmXRH6pXfSb0ceR/VFAHh1kgcs0HWHkyApOhP/SgljwRwdX/1H9kM2AfQ2C4eD:zMMpXKb0hNGh1kG0HWNAuCsltH9K

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"	ff491936f7b08fc81b348605bffeecfd.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/0x000b000000012234-2.dat	aspack_v212_v242
behavioral1/files/0x0035000000016cb3-38.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	ff491936f7b08fc81b348605bffeecfd.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	ff491936f7b08fc81b348605bffeecfd.exe

Executes dropped EXE 1 IoCs

pid	Process
1876	HelpMe.exe

Loads dropped DLL 2 IoCs

pid	Process
2024	ff491936f7b08fc81b348605bffeecfd.exe
2024	ff491936f7b08fc81b348605bffeecfd.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)	\??\J:	HelpMe.exe
File opened (read-only)	\??\M:	HelpMe.exe
File opened (read-only)	\??\O:	HelpMe.exe
File opened (read-only)	\??\R:	HelpMe.exe
File opened (read-only)	\??\M:	ff491936f7b08fc81b348605bffeecfd.exe
File opened (read-only)	\??\P:	ff491936f7b08fc81b348605bffeecfd.exe
File opened (read-only)	\??\T:	ff491936f7b08fc81b348605bffeecfd.exe
File opened (read-only)	\??\H:	HelpMe.exe
File opened (read-only)	\??\Y:	HelpMe.exe
File opened (read-only)	\??\Z:	HelpMe.exe
File opened (read-only)	\??\G:	HelpMe.exe
File opened (read-only)	\??\T:	HelpMe.exe
File opened (read-only)	\??\W:	HelpMe.exe
File opened (read-only)	\??\J:	ff491936f7b08fc81b348605bffeecfd.exe
File opened (read-only)	\??\N:	ff491936f7b08fc81b348605bffeecfd.exe
File opened (read-only)	\??\Q:	ff491936f7b08fc81b348605bffeecfd.exe
File opened (read-only)	\??\E:	HelpMe.exe
File opened (read-only)	\??\K:	ff491936f7b08fc81b348605bffeecfd.exe
File opened (read-only)	\??\B:	HelpMe.exe
File opened (read-only)	\??\Q:	HelpMe.exe
File opened (read-only)	\??\U:	HelpMe.exe
File opened (read-only)	\??\I:	HelpMe.exe
File opened (read-only)	\??\N:	HelpMe.exe
File opened (read-only)	\??\A:	ff491936f7b08fc81b348605bffeecfd.exe
File opened (read-only)	\??\E:	ff491936f7b08fc81b348605bffeecfd.exe
File opened (read-only)	\??\O:	ff491936f7b08fc81b348605bffeecfd.exe
File opened (read-only)	\??\W:	ff491936f7b08fc81b348605bffeecfd.exe
File opened (read-only)	\??\K:	HelpMe.exe
File opened (read-only)	\??\X:	HelpMe.exe
File opened (read-only)	\??\V:	ff491936f7b08fc81b348605bffeecfd.exe
File opened (read-only)	\??\Y:	ff491936f7b08fc81b348605bffeecfd.exe
File opened (read-only)	\??\Z:	ff491936f7b08fc81b348605bffeecfd.exe
File opened (read-only)	\??\A:	HelpMe.exe
File opened (read-only)	\??\L:	HelpMe.exe
File opened (read-only)	\??\V:	HelpMe.exe
File opened (read-only)	\??\B:	ff491936f7b08fc81b348605bffeecfd.exe
File opened (read-only)	\??\G:	ff491936f7b08fc81b348605bffeecfd.exe
File opened (read-only)	\??\H:	ff491936f7b08fc81b348605bffeecfd.exe
File opened (read-only)	\??\R:	ff491936f7b08fc81b348605bffeecfd.exe
File opened (read-only)	\??\S:	HelpMe.exe
File opened (read-only)	\??\L:	ff491936f7b08fc81b348605bffeecfd.exe
File opened (read-only)	\??\S:	ff491936f7b08fc81b348605bffeecfd.exe
File opened (read-only)	\??\U:	ff491936f7b08fc81b348605bffeecfd.exe
File opened (read-only)	\??\X:	ff491936f7b08fc81b348605bffeecfd.exe
File opened (read-only)	\??\I:	ff491936f7b08fc81b348605bffeecfd.exe
File opened (read-only)	\??\P:	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	ff491936f7b08fc81b348605bffeecfd.exe
File opened for modification	C:\AUTORUN.INF	ff491936f7b08fc81b348605bffeecfd.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	ff491936f7b08fc81b348605bffeecfd.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 2024 wrote to memory of 1876	2024	ff491936f7b08fc81b348605bffeecfd.exe	28
PID 2024 wrote to memory of 1876	2024	ff491936f7b08fc81b348605bffeecfd.exe	28
PID 2024 wrote to memory of 1876	2024	ff491936f7b08fc81b348605bffeecfd.exe	28
PID 2024 wrote to memory of 1876	2024	ff491936f7b08fc81b348605bffeecfd.exe	28

C:\Users\Admin\AppData\Local\Temp\ff491936f7b08fc81b348605bffeecfd.exe
"C:\Users\Admin\AppData\Local\Temp\ff491936f7b08fc81b348605bffeecfd.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:2024
- 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:1876

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-1-5-21-3601492379-692465709-652514833-1000\desktop.ini.exe

Filesize
1.4MB

MD5
fd4a05e7680d1a546e6fdfdfa68e8754

SHA1
c900ffa6a67eb630902f32d1f9234dbc098b2573

SHA256
c74639ba7390375d0d9f326459f993698101cf7b03f5d938711c6d37dc13f21b

SHA512
d244f232150837a86f9e8a0f8d62798ffec5d9747dd4c4f4fc87e581446a50349f1b634033cedd4be7c001a693b6319a8abaed59e6749a146ed382debe0678c7

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

Filesize
1KB

MD5
9250bb104c31341bb58f55fe889905c7

SHA1
8613fb35f9fc4d49b179454e7790dc0b985951c1

SHA256
a914dbc9fca1592902091c5cb5e708f13892e111e4258a1f3f971c809c881561

SHA512
e75d53844c9cdd6b9ca3e061130c997589a00be40b629153bdd98d4ef9688fb471a54a5914744a214381bebfbcb61bf9050567c0c1a4aba364aa6f147886166f

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

Filesize
950B

MD5
b751a89ddf66a2af108b435219b29477

SHA1
3913383f3f726d346a79d3dd5f5fd091f64f8268

SHA256
5127a9afd0639b17c30370de9a51adb7324ff271987463ccb1455c8b7425f8a6

SHA512
6ebb8a79a5b8c7e3b78fd1f445cc3f38cd265ecc82cbff08275fd27bc79359267b9186522fdd3d62a1adae3a23fe99bbbd70c65d872e5e725540b626a48c2f72

Download Submit
F:\AUTORUN.INF

Filesize
145B

MD5
ca13857b2fd3895a39f09d9dde3cca97

SHA1
8b78c5b2ec97c372ebdcef92d14b0998f8dd6dd0

SHA256
cfe448b4506a95b33b529efa88f1ac704d8bdf98a941c065650ead27609318ae

SHA512
55e5b5325968d1e5314527fb2d26012f5aae4a1c38e305417be273400cb1c6d0c22b85bddb501d7a5720a3f53bb5caf6ada8a7894232344c4f6c6ef85d226b47

Download Submit
F:\AutoRun.exe

Filesize
1.4MB

MD5
ff491936f7b08fc81b348605bffeecfd

SHA1
1464a3b886d2d047bece397e376cee756c1f8479

SHA256
8ab2b12fc4468e752db72f828f2b0d676574a7c84212785193286d7748be6199

SHA512
568874092a7cc5441799fb45213bbc3f58f53903a6fb1fae44528deac8bebbfd68f2613974e37ad81c7f11b9e06a2e785e06ca5ee47a1e0eb76f105f0a4824d7

Download Submit
\Windows\SysWOW64\HelpMe.exe

Filesize
1.4MB

MD5
ef4fa4775d9d42e36d4478730921bd1c

SHA1
19021763513d8b561ee00b270fe9e7a627c4ed2d

SHA256
de2f5bc6f099019155db6c7f38a7fc90fe6dd4d6c89e1764835f8711fb19cfc1

SHA512
c34978daa3122e3ba5705bbeede99f5b5dc79fec441e567b6ed95b8fe6364cf7aea3f1b6bb098e06787f75811c02aca6eb44b7c36010f0e89984242bcfef7817

Download Submit
memory/1876-9-0x0000000000220000-0x0000000000221000-memory.dmp

Filesize
4KB

Download
memory/2024-1-0x0000000000220000-0x0000000000221000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads