1bd6aa83dff1b2d50d6437078548a08d641b688604ab88f6685742d3e96ec51c

Analysis

max time kernel
148s
max time network
150s
platform
windows7_x64
resource
win7-20240220-en
resource tags

arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
submitted
20-04-2024 04:49

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General

Target

2024-04-20_c4a3ce2a6a6c692064ad031b4c02b831_cryptolocker.exe
Size

74KB
MD5

c4a3ce2a6a6c692064ad031b4c02b831
SHA1

238abb9d6dc4fddf0045b2252c2e9c6cf854bd50
SHA256

1bd6aa83dff1b2d50d6437078548a08d641b688604ab88f6685742d3e96ec51c
SHA512

c4f48194535be181e46999b27065957d28baad1ce8744d0d76235b6cea4d525d40e918e0766f62894e094761d1c73321950f1a0108b460071568b1088d7af71b
SSDEEP

1536:X6QFElP6n+gJQMOtEvwDpjBZYTjipvF2bx1rHsn:X6a+SOtEvwDpjBZYvQd2Q

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000b000000013a88-10.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x000b000000013a88-10.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
3048	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
1740	2024-04-20_c4a3ce2a6a6c692064ad031b4c02b831_cryptolocker.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 1740 wrote to memory of 3048	1740	2024-04-20_c4a3ce2a6a6c692064ad031b4c02b831_cryptolocker.exe	28
PID 1740 wrote to memory of 3048	1740	2024-04-20_c4a3ce2a6a6c692064ad031b4c02b831_cryptolocker.exe	28
PID 1740 wrote to memory of 3048	1740	2024-04-20_c4a3ce2a6a6c692064ad031b4c02b831_cryptolocker.exe	28
PID 1740 wrote to memory of 3048	1740	2024-04-20_c4a3ce2a6a6c692064ad031b4c02b831_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-20_c4a3ce2a6a6c692064ad031b4c02b831_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-20_c4a3ce2a6a6c692064ad031b4c02b831_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1740
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3048

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

\Users\Admin\AppData\Local\Temp\asih.exe

Filesize
74KB

MD5
8e0b3850d811b374f1f07bddf0a518df

SHA1
35c700df0e338c7463dfa48988e05932979cfa89

SHA256
c0f070f713a4b6b2b2b3c346a04aab64ad560989965594da8ab14e98c2c0b35c

SHA512
fd8281536c28a41dd4b66086463a90f4197721dfb942585dd4b5b9e88d7e15c9da144b9d92fbed46594c1c76a425b1252b24a4f7a727e0f7e711896e7764adb6

Download Submit
memory/1740-0-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1740-2-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1740-1-0x0000000000480000-0x0000000000486000-memory.dmp

Filesize
24KB

Download
memory/3048-15-0x0000000000210000-0x0000000000216000-memory.dmp

Filesize
24KB

Download
memory/3048-17-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download