d9ee97ebfca901fc2296137e2219d4115a9b4a68799cbfcf7a09224b2addf481

Analysis

max time kernel
146s
max time network
125s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
31-12-2023 14:17

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General

Target

398646f1bca7b2630599fe83a5e7501b.exe
Size

10.7MB
MD5

398646f1bca7b2630599fe83a5e7501b
SHA1

2de320aad4ac27e790cdc1eceeb5d60f51370b83
SHA256

d9ee97ebfca901fc2296137e2219d4115a9b4a68799cbfcf7a09224b2addf481
SHA512

7bdcb6c4fa70d09905fbf5b6696934f4a5adfc662cf606321d5f5a6fda0ae6383df937657fe7ff40f0eb9d884a79482fee646a168aedb1e8e1cf0f72099ea483
SSDEEP

98304:1i0li07IMzKpXOMGQKIMzKpXOMGQFIMzKpXOMGQJ:40I07I2lyKI2lyFI2lyJ

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"	398646f1bca7b2630599fe83a5e7501b.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/0x000e000000012232-2.dat	aspack_v212_v242
behavioral1/files/0x0008000000015c63-39.dat	aspack_v212_v242
behavioral1/files/0x0001000000000026-43.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	HelpMe.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Soft.lnk	398646f1bca7b2630599fe83a5e7501b.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Soft.lnk	398646f1bca7b2630599fe83a5e7501b.exe

Executes dropped EXE 1 IoCs

pid	Process
2416	HelpMe.exe

Loads dropped DLL 2 IoCs

pid	Process
2300	398646f1bca7b2630599fe83a5e7501b.exe
2300	398646f1bca7b2630599fe83a5e7501b.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)	\??\A:	398646f1bca7b2630599fe83a5e7501b.exe
File opened (read-only)	\??\B:	398646f1bca7b2630599fe83a5e7501b.exe
File opened (read-only)	\??\I:	398646f1bca7b2630599fe83a5e7501b.exe
File opened (read-only)	\??\I:	HelpMe.exe
File opened (read-only)	\??\T:	HelpMe.exe
File opened (read-only)	\??\U:	HelpMe.exe
File opened (read-only)	\??\V:	HelpMe.exe
File opened (read-only)	\??\J:	398646f1bca7b2630599fe83a5e7501b.exe
File opened (read-only)	\??\K:	398646f1bca7b2630599fe83a5e7501b.exe
File opened (read-only)	\??\W:	398646f1bca7b2630599fe83a5e7501b.exe
File opened (read-only)	\??\X:	398646f1bca7b2630599fe83a5e7501b.exe
File opened (read-only)	\??\A:	HelpMe.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)	\??\H:	398646f1bca7b2630599fe83a5e7501b.exe
File opened (read-only)	\??\P:	398646f1bca7b2630599fe83a5e7501b.exe
File opened (read-only)	\??\T:	398646f1bca7b2630599fe83a5e7501b.exe
File opened (read-only)	\??\V:	398646f1bca7b2630599fe83a5e7501b.exe
File opened (read-only)	\??\X:	HelpMe.exe
File opened (read-only)	\??\L:	HelpMe.exe
File opened (read-only)	\??\M:	HelpMe.exe
File opened (read-only)	\??\O:	HelpMe.exe
File opened (read-only)	\??\Q:	HelpMe.exe
File opened (read-only)	\??\L:	398646f1bca7b2630599fe83a5e7501b.exe
File opened (read-only)	\??\M:	398646f1bca7b2630599fe83a5e7501b.exe
File opened (read-only)	\??\Q:	398646f1bca7b2630599fe83a5e7501b.exe
File opened (read-only)	\??\K:	HelpMe.exe
File opened (read-only)	\??\E:	398646f1bca7b2630599fe83a5e7501b.exe
File opened (read-only)	\??\W:	HelpMe.exe
File opened (read-only)	\??\N:	398646f1bca7b2630599fe83a5e7501b.exe
File opened (read-only)	\??\Y:	398646f1bca7b2630599fe83a5e7501b.exe
File opened (read-only)	\??\Z:	398646f1bca7b2630599fe83a5e7501b.exe
File opened (read-only)	\??\N:	HelpMe.exe
File opened (read-only)	\??\Y:	HelpMe.exe
File opened (read-only)	\??\G:	398646f1bca7b2630599fe83a5e7501b.exe
File opened (read-only)	\??\U:	398646f1bca7b2630599fe83a5e7501b.exe
File opened (read-only)	\??\P:	HelpMe.exe
File opened (read-only)	\??\S:	HelpMe.exe
File opened (read-only)	\??\G:	HelpMe.exe
File opened (read-only)	\??\J:	HelpMe.exe
File opened (read-only)	\??\Z:	HelpMe.exe
File opened (read-only)	\??\O:	398646f1bca7b2630599fe83a5e7501b.exe
File opened (read-only)	\??\R:	398646f1bca7b2630599fe83a5e7501b.exe
File opened (read-only)	\??\S:	398646f1bca7b2630599fe83a5e7501b.exe
File opened (read-only)	\??\B:	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	398646f1bca7b2630599fe83a5e7501b.exe
File opened for modification	C:\AUTORUN.INF	398646f1bca7b2630599fe83a5e7501b.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	398646f1bca7b2630599fe83a5e7501b.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 2300 wrote to memory of 2416	2300	398646f1bca7b2630599fe83a5e7501b.exe	28
PID 2300 wrote to memory of 2416	2300	398646f1bca7b2630599fe83a5e7501b.exe	28
PID 2300 wrote to memory of 2416	2300	398646f1bca7b2630599fe83a5e7501b.exe	28
PID 2300 wrote to memory of 2416	2300	398646f1bca7b2630599fe83a5e7501b.exe	28

C:\Users\Admin\AppData\Local\Temp\398646f1bca7b2630599fe83a5e7501b.exe
"C:\Users\Admin\AppData\Local\Temp\398646f1bca7b2630599fe83a5e7501b.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:2300
- 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:2416

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

Filesize
10.7MB

MD5
515b300e842762dc5cc5cfd7c041c200

SHA1
12d24c1e43eb61bd145c5f3dc1d906cd503c72bb

SHA256
ff665e8c23d785ce6ab281e9d59fd7154ce0a91ac82d1d1df7cb1e76f5716058

SHA512
bfc726ec80438143b2bfddfbd31c94112b0c8a39f9a86242e942e77939a18d9d4910e6a174f54ad7f8e32b941bcc718f5134f8236a888f8b9ae241e36c56883e

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

Filesize
954B

MD5
971b1bef53b51490021d5172520d7104

SHA1
248c4a68a59664d7fa0df9266a5efc8e3119db4e

SHA256
f34823371acf9a833f69a79cfb3f6a79b9c14db5151d3ef80e982d333ad31948

SHA512
19638a797dd137155eb3a0224780cf4273544dcd56cee8d24024b2ab87d48fccef9c44dbf1b569f54a15155a5bd715915090a49fa6179182907b1c3a31b11fe4

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

Filesize
1KB

MD5
3156f7f7ee5fdfc39e93c7ae70ec06e3

SHA1
f699f311d204c8c3d1770c78344c77510a7e23bb

SHA256
f0fff8a59f9b342614b612b72c2bb6faa3bc8f6b0ea01c29be146ffd49075b94

SHA512
0053b35b3aaa9fd42ca64907775204052476bffc39378d79daa0fb3b8768519cbad99156af850557fadbe0b73da310c50796c35cc903c6ee45ecf200e850399a

Download Submit
F:\AUTORUN.INF

Filesize
145B

MD5
ca13857b2fd3895a39f09d9dde3cca97

SHA1
8b78c5b2ec97c372ebdcef92d14b0998f8dd6dd0

SHA256
cfe448b4506a95b33b529efa88f1ac704d8bdf98a941c065650ead27609318ae

SHA512
55e5b5325968d1e5314527fb2d26012f5aae4a1c38e305417be273400cb1c6d0c22b85bddb501d7a5720a3f53bb5caf6ada8a7894232344c4f6c6ef85d226b47

Download Submit
F:\AutoRun.exe

Filesize
10.7MB

MD5
398646f1bca7b2630599fe83a5e7501b

SHA1
2de320aad4ac27e790cdc1eceeb5d60f51370b83

SHA256
d9ee97ebfca901fc2296137e2219d4115a9b4a68799cbfcf7a09224b2addf481

SHA512
7bdcb6c4fa70d09905fbf5b6696934f4a5adfc662cf606321d5f5a6fda0ae6383df937657fe7ff40f0eb9d884a79482fee646a168aedb1e8e1cf0f72099ea483

Download Submit
\Windows\SysWOW64\HelpMe.exe

Filesize
7.8MB

MD5
e3e9192e9595b2626808e71d5173e993

SHA1
584380d93188c7f0a2482bc10c33b344326f0486

SHA256
86c62f85a28e939f6e2645287ed7952249211e798e44398c0bde742d307bda3e

SHA512
d03c1b0795d69c26543255ea7f56a9424296b824a53f0a55da35bb96e34cbc69d14386188d7adc918d30edf4a5fd7541a8b9ac1ae37ee841b4afb9681b8cfa63

Download Submit
memory/2300-0-0x0000000000220000-0x0000000000221000-memory.dmp

Filesize
4KB

Download
memory/2300-222-0x0000000000220000-0x0000000000221000-memory.dmp

Filesize
4KB

Download
memory/2416-10-0x0000000000220000-0x0000000000221000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads