3ba5771e48eb87e3cc85c5011ee606728c4e5f6e837b29be3728e82d30129007

Analysis

max time kernel
146s
max time network
122s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
31/12/2023, 21:00

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General

Target

3b0a5347033eda5eea82c327e55cb705.exe
Size

844KB
MD5

3b0a5347033eda5eea82c327e55cb705
SHA1

293f29e770e9d7f6b55edef4e6a631c29909a026
SHA256

3ba5771e48eb87e3cc85c5011ee606728c4e5f6e837b29be3728e82d30129007
SHA512

89958cd161e2dd167bb9499b7a441799a3a341b8e2d1e54d99c66c815b4e39bc0dcc88333e5fada265c41c0f4a64d785575467726cfdf149cf7d2cb7606e904b
SSDEEP

12288:5MMpXKb0hNGh1kG0HWnALbCKB8NIpYJTCihq82WFpXKEVFA2MC6Nv:5MMpXS0hN0V0H+KB8NIyXbacAff

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"	3b0a5347033eda5eea82c327e55cb705.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/0x000a000000012253-2.dat	aspack_v212_v242
behavioral1/files/0x003000000001422b-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	3b0a5347033eda5eea82c327e55cb705.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	3b0a5347033eda5eea82c327e55cb705.exe

Executes dropped EXE 1 IoCs

pid	Process
2436	HelpMe.exe

Loads dropped DLL 2 IoCs

pid	Process
2408	3b0a5347033eda5eea82c327e55cb705.exe
2408	3b0a5347033eda5eea82c327e55cb705.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:	HelpMe.exe
File opened (read-only)	\??\U:	HelpMe.exe
File opened (read-only)	\??\U:	3b0a5347033eda5eea82c327e55cb705.exe
File opened (read-only)	\??\W:	3b0a5347033eda5eea82c327e55cb705.exe
File opened (read-only)	\??\Y:	3b0a5347033eda5eea82c327e55cb705.exe
File opened (read-only)	\??\L:	HelpMe.exe
File opened (read-only)	\??\V:	HelpMe.exe
File opened (read-only)	\??\G:	3b0a5347033eda5eea82c327e55cb705.exe
File opened (read-only)	\??\P:	3b0a5347033eda5eea82c327e55cb705.exe
File opened (read-only)	\??\E:	HelpMe.exe
File opened (read-only)	\??\T:	HelpMe.exe
File opened (read-only)	\??\W:	HelpMe.exe
File opened (read-only)	\??\Y:	HelpMe.exe
File opened (read-only)	\??\N:	3b0a5347033eda5eea82c327e55cb705.exe
File opened (read-only)	\??\Q:	3b0a5347033eda5eea82c327e55cb705.exe
File opened (read-only)	\??\Z:	3b0a5347033eda5eea82c327e55cb705.exe
File opened (read-only)	\??\O:	3b0a5347033eda5eea82c327e55cb705.exe
File opened (read-only)	\??\X:	3b0a5347033eda5eea82c327e55cb705.exe
File opened (read-only)	\??\B:	HelpMe.exe
File opened (read-only)	\??\K:	HelpMe.exe
File opened (read-only)	\??\M:	HelpMe.exe
File opened (read-only)	\??\A:	3b0a5347033eda5eea82c327e55cb705.exe
File opened (read-only)	\??\H:	3b0a5347033eda5eea82c327e55cb705.exe
File opened (read-only)	\??\M:	3b0a5347033eda5eea82c327e55cb705.exe
File opened (read-only)	\??\N:	HelpMe.exe
File opened (read-only)	\??\Q:	HelpMe.exe
File opened (read-only)	\??\R:	HelpMe.exe
File opened (read-only)	\??\I:	3b0a5347033eda5eea82c327e55cb705.exe
File opened (read-only)	\??\S:	3b0a5347033eda5eea82c327e55cb705.exe
File opened (read-only)	\??\H:	HelpMe.exe
File opened (read-only)	\??\O:	HelpMe.exe
File opened (read-only)	\??\S:	HelpMe.exe
File opened (read-only)	\??\X:	HelpMe.exe
File opened (read-only)	\??\T:	3b0a5347033eda5eea82c327e55cb705.exe
File opened (read-only)	\??\V:	3b0a5347033eda5eea82c327e55cb705.exe
File opened (read-only)	\??\J:	HelpMe.exe
File opened (read-only)	\??\R:	3b0a5347033eda5eea82c327e55cb705.exe
File opened (read-only)	\??\P:	HelpMe.exe
File opened (read-only)	\??\Z:	HelpMe.exe
File opened (read-only)	\??\B:	3b0a5347033eda5eea82c327e55cb705.exe
File opened (read-only)	\??\E:	3b0a5347033eda5eea82c327e55cb705.exe
File opened (read-only)	\??\J:	3b0a5347033eda5eea82c327e55cb705.exe
File opened (read-only)	\??\I:	HelpMe.exe
File opened (read-only)	\??\K:	3b0a5347033eda5eea82c327e55cb705.exe
File opened (read-only)	\??\L:	3b0a5347033eda5eea82c327e55cb705.exe
File opened (read-only)	\??\G:	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	3b0a5347033eda5eea82c327e55cb705.exe
File opened for modification	C:\AUTORUN.INF	3b0a5347033eda5eea82c327e55cb705.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	3b0a5347033eda5eea82c327e55cb705.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 2408 wrote to memory of 2436	2408	3b0a5347033eda5eea82c327e55cb705.exe	28
PID 2408 wrote to memory of 2436	2408	3b0a5347033eda5eea82c327e55cb705.exe	28
PID 2408 wrote to memory of 2436	2408	3b0a5347033eda5eea82c327e55cb705.exe	28
PID 2408 wrote to memory of 2436	2408	3b0a5347033eda5eea82c327e55cb705.exe	28

C:\Users\Admin\AppData\Local\Temp\3b0a5347033eda5eea82c327e55cb705.exe
"C:\Users\Admin\AppData\Local\Temp\3b0a5347033eda5eea82c327e55cb705.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:2408
- 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:2436

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-1-5-21-1268429524-3929314613-1992311491-1000\desktop.ini.exe

Filesize
845KB

MD5
f8bef170f101214d54727b3b0f435a0c

SHA1
649f9da0fe582d2ef3cfc31ea272282097a378cb

SHA256
ff1b06506b27b5e465f76b487d9d5717716bd1faa16bc966bc23a22489a5822f

SHA512
605feb13f060582d6bd10f42b8663ad6f24b168dda11d8273a7a284be08cfaaf3fb12f3611fbcf46688aad8c6b19dc1abe83aab8b021ddda47ae53ecaebd6b73

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

Filesize
1KB

MD5
09d750d4b6c1139bd6be7e99fce52808

SHA1
efad45bc53a91a230d9f97eb8970816e5dabcbe5

SHA256
247083d3d0d326c7987cad22000d30c049ec4247b3c34545f76cf661f1fc335e

SHA512
3f6de0e4e2874bb8d82139e75012ca0e789c59b561755df1a7c4bed987b0a808594f6173eb52ef9c8639367bb74e035513fc8a63c55ba39c81dc4664f005543c

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

Filesize
954B

MD5
a6dc6e30b31ce6e02c8384a63d97c3e0

SHA1
fb0c02ae5cf75fc6e1ace8b5ca3fcd5cb824ff18

SHA256
aeeabed9557cff573ace9db4c5fbf97181e58bc375cec1f61ea1248d89acd986

SHA512
ae4142f5c2e23aa5757ffe9c63be1d29ae7eacc93361d688f4b7178ad916a3e6174bcf9febcff8d5a8ef6f1a381fcbcb02403e077906463637394482094c9d6e

Download Submit
F:\AUTORUN.INF

Filesize
145B

MD5
ca13857b2fd3895a39f09d9dde3cca97

SHA1
8b78c5b2ec97c372ebdcef92d14b0998f8dd6dd0

SHA256
cfe448b4506a95b33b529efa88f1ac704d8bdf98a941c065650ead27609318ae

SHA512
55e5b5325968d1e5314527fb2d26012f5aae4a1c38e305417be273400cb1c6d0c22b85bddb501d7a5720a3f53bb5caf6ada8a7894232344c4f6c6ef85d226b47

Download Submit
F:\AutoRun.exe

Filesize
844KB

MD5
3b0a5347033eda5eea82c327e55cb705

SHA1
293f29e770e9d7f6b55edef4e6a631c29909a026

SHA256
3ba5771e48eb87e3cc85c5011ee606728c4e5f6e837b29be3728e82d30129007

SHA512
89958cd161e2dd167bb9499b7a441799a3a341b8e2d1e54d99c66c815b4e39bc0dcc88333e5fada265c41c0f4a64d785575467726cfdf149cf7d2cb7606e904b

Download Submit
\Windows\SysWOW64\HelpMe.exe

Filesize
843KB

MD5
b0bd6cf243e7818e4860dd2a9eaa5580

SHA1
d24f4ff7c10c63e3becd1e59f07c53b465e9dece

SHA256
c4089fa2b21b8604567fbdcc8dbaf2684c4b45f8bdde230c0cad1b8d97ef5b1a

SHA512
c7c28520efa9da52f74c5e0a9eb93598d87a6cb512aba2f994ca7d52270e1b1c97529b38a3af5741440019137d781d9907b3ce213e9c485b307bf44d1df1464f

Download Submit
memory/2408-0-0x0000000000220000-0x0000000000221000-memory.dmp

Filesize
4KB

Download
memory/2408-104-0x0000000000220000-0x0000000000221000-memory.dmp

Filesize
4KB

Download
memory/2436-10-0x0000000000300000-0x0000000000301000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads