5e59a26ae95fb1f6e897c35c0071de0964a79a027f0448ff15ecdf6b49799645

Analysis

max time kernel
149s
max time network
154s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
14/03/2024, 18:51

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General

Target

2024-03-14_e4751e0c08f528da6f3a4857fb479b4c_cryptolocker.exe
Size

38KB
MD5

e4751e0c08f528da6f3a4857fb479b4c
SHA1

06df67e50fd2d285d90e8525a8b3157d3dd45cbb
SHA256

5e59a26ae95fb1f6e897c35c0071de0964a79a027f0448ff15ecdf6b49799645
SHA512

2199575731ae22dc3bbcaeed6bad465a8e5f48a129a7243fd95e0f4b9643147dbfac08ecd6bf80b197f51eaaf87ac7280efe671db7f2c1b65d46f4dba3eda642
SSDEEP

768:wHGGaSawqnwjRQ6ESlmFOsPoOdQtOOtEvwDpjm6WaJIOc+UPPEkLCo:YGzl5wjRQBBOsP1QMOtEvwDpjgarrkLv

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/2344-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000900000001222b-11.dat	CryptoLocker_rule2
behavioral1/memory/2344-13-0x0000000001EB0000-0x0000000001EBB000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2344-16-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2596-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral1/memory/2344-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000900000001222b-11.dat	CryptoLocker_set1
behavioral1/memory/2344-13-0x0000000001EB0000-0x0000000001EBB000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2344-16-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2596-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2596	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2344	2024-03-14_e4751e0c08f528da6f3a4857fb479b4c_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 2344 wrote to memory of 2596	2344	2024-03-14_e4751e0c08f528da6f3a4857fb479b4c_cryptolocker.exe	28
PID 2344 wrote to memory of 2596	2344	2024-03-14_e4751e0c08f528da6f3a4857fb479b4c_cryptolocker.exe	28
PID 2344 wrote to memory of 2596	2344	2024-03-14_e4751e0c08f528da6f3a4857fb479b4c_cryptolocker.exe	28
PID 2344 wrote to memory of 2596	2344	2024-03-14_e4751e0c08f528da6f3a4857fb479b4c_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-03-14_e4751e0c08f528da6f3a4857fb479b4c_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-14_e4751e0c08f528da6f3a4857fb479b4c_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2344
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2596

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
38KB

MD5
457c75e03ffd81899f7f174ad780aa37

SHA1
efe1fded37ea82fcb734bfe159f273ceee19d90e

SHA256
a5dd7fd7780f1868224a933030ff0e16d1e23054785970286db8de406b105a04

SHA512
08b2d9533644f358e4d7d44796f3171cd7936f72fb01ab3fde6d83d8a8c3aceb9b4195fd2d6c986221a61cdd3a16672155d8d736a1325210860de6e8849e1341

Download Submit
memory/2344-1-0x00000000002D0000-0x00000000002D6000-memory.dmp

Filesize
24KB

Download
memory/2344-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2344-2-0x0000000000300000-0x0000000000306000-memory.dmp

Filesize
24KB

Download
memory/2344-3-0x00000000002D0000-0x00000000002D6000-memory.dmp

Filesize
24KB

Download
memory/2344-13-0x0000000001EB0000-0x0000000001EBB000-memory.dmp

Filesize
44KB

Download
memory/2344-16-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2596-17-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2596-19-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2596-20-0x0000000000270000-0x0000000000276000-memory.dmp

Filesize
24KB

Download