944a5942c0c5307834eb2fd06c651496ff3333588b6bafb5ad993318d14ea90c

Analysis

max time kernel
148s
max time network
148s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
05-04-2024 04:18

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General

Target

2024-04-05_fb0167ce539bd5847899616790efd931_cryptolocker.exe
Size

68KB
MD5

fb0167ce539bd5847899616790efd931
SHA1

eca13b95b9ef02e076fde27593e275cfa856cdb5
SHA256

944a5942c0c5307834eb2fd06c651496ff3333588b6bafb5ad993318d14ea90c
SHA512

c19c4f41128d864382e00c350134e1c7a1970a6b2b34b1d65039e22eaaf6dda840f5180a174c4207e5d36ab08a31e49020fd008a976f7c1f90635e60440e6c10
SSDEEP

1536:Dk/xY0sllyGQMOtEvwDpjwycDtKkQZQRKb61vSbgZ3QzNKUb:DW60sllyWOtEvwDpjwF85V

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/2364-1-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x0009000000014120-11.dat	CryptoLocker_rule2
behavioral1/memory/2364-13-0x0000000001E70000-0x0000000001E7B000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2364-15-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2416-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral1/memory/2364-1-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x0009000000014120-11.dat	CryptoLocker_set1
behavioral1/memory/2364-13-0x0000000001E70000-0x0000000001E7B000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2364-15-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2416-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2416	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2364	2024-04-05_fb0167ce539bd5847899616790efd931_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 2364 wrote to memory of 2416	2364	2024-04-05_fb0167ce539bd5847899616790efd931_cryptolocker.exe	28
PID 2364 wrote to memory of 2416	2364	2024-04-05_fb0167ce539bd5847899616790efd931_cryptolocker.exe	28
PID 2364 wrote to memory of 2416	2364	2024-04-05_fb0167ce539bd5847899616790efd931_cryptolocker.exe	28
PID 2364 wrote to memory of 2416	2364	2024-04-05_fb0167ce539bd5847899616790efd931_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-05_fb0167ce539bd5847899616790efd931_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-05_fb0167ce539bd5847899616790efd931_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2364
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2416

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
ee072ad813fe7e1da8d793944afd3001

SHA1
be55135d7b17f32592138a2c52a8382c1174f394

SHA256
7892da86600c3a9be2c9d1ae1dc3f53d14034bb380d0020c2b7955a1c86b9b69

SHA512
65b7d61a8b536157b3793f7e1d673cebf9f4208ae224d81c5971d2337a879ea2208f9ee55fc6a0e99d97a74cffafd9ad1f5e11049ee56de288bb15cdabe3843e

Download Submit
memory/2364-1-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2364-0-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2364-3-0x0000000000380000-0x0000000000386000-memory.dmp

Filesize
24KB

Download
memory/2364-2-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2364-13-0x0000000001E70000-0x0000000001E7B000-memory.dmp

Filesize
44KB

Download
memory/2364-15-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2416-17-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2416-19-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download