f8b83ee5fe799e3c7d31485746f7ebf8b8f8f18904d32a6c0e919344b0bb08e9

Analysis

max time kernel
148s
max time network
148s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
08-04-2024 15:39

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General

Target

2024-04-08_ad1f5f78d07a0e24749e2683c8c3d651_cryptolocker.exe
Size

68KB
MD5

ad1f5f78d07a0e24749e2683c8c3d651
SHA1

61236021ccdac4c0cd2364ef6f5e63b4087a01a7
SHA256

f8b83ee5fe799e3c7d31485746f7ebf8b8f8f18904d32a6c0e919344b0bb08e9
SHA512

5571f15b8a48bcdc95b120ccd88cf553d58df8c6462343226a127de8b02c1ac0209ae0aa5bc1589098eb1386993fa8643e74079aab42297411d46ae71b912686
SSDEEP

1536:Dk/xY0sllyGQMOtEvwDpjwycDtKkQZQRKb61vSbgZ3QzNKU5E:DW60sllyWOtEvwDpjwF85k

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/2084-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000c000000012329-11.dat	CryptoLocker_rule2
behavioral1/memory/2084-15-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2240-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2084-13-0x00000000022E0000-0x00000000022EB000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral1/memory/2084-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000c000000012329-11.dat	CryptoLocker_set1
behavioral1/memory/2084-15-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2240-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2084-13-0x00000000022E0000-0x00000000022EB000-memory.dmp	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2240	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2084	2024-04-08_ad1f5f78d07a0e24749e2683c8c3d651_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 2084 wrote to memory of 2240	2084	2024-04-08_ad1f5f78d07a0e24749e2683c8c3d651_cryptolocker.exe	28
PID 2084 wrote to memory of 2240	2084	2024-04-08_ad1f5f78d07a0e24749e2683c8c3d651_cryptolocker.exe	28
PID 2084 wrote to memory of 2240	2084	2024-04-08_ad1f5f78d07a0e24749e2683c8c3d651_cryptolocker.exe	28
PID 2084 wrote to memory of 2240	2084	2024-04-08_ad1f5f78d07a0e24749e2683c8c3d651_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-08_ad1f5f78d07a0e24749e2683c8c3d651_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-08_ad1f5f78d07a0e24749e2683c8c3d651_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2084
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2240

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
68KB

MD5
cf84f8f3f6284613084e944aee72dc99

SHA1
8e8328c7bcf4bdd7d6ea3b78c43882791ea5a9a3

SHA256
81866766fe5e835475bec97e299f7664bfaea366520a6bb19b88df7ca6e500d9

SHA512
29817e5a1ffecff81962119b2102b3a4ddb36963758b77539361ab02859b3da3b0a3c1d6939f69080b960316108082f687c73f0e35c4457a6e4e6c1dfc44ff8a

Download Submit
memory/2084-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2084-1-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2084-2-0x0000000000340000-0x0000000000346000-memory.dmp

Filesize
24KB

Download
memory/2084-7-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2084-15-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2084-13-0x00000000022E0000-0x00000000022EB000-memory.dmp

Filesize
44KB

Download
memory/2240-17-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2240-19-0x0000000000290000-0x0000000000296000-memory.dmp

Filesize
24KB

Download
memory/2240-21-0x0000000000250000-0x0000000000256000-memory.dmp

Filesize
24KB

Download