50ef5c15d6d59e08e2e05986fef1488af27250b878e7656efa6a7d4943c2d66c

Analysis

max time kernel
147s
max time network
149s
platform
windows7_x64
resource
win7-20240215-en
resource tags

arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system
submitted
12/03/2024, 01:34

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General

Target

2024-03-12_4cc6f67c0fa9f278cbe06734bc6bb97e_cryptolocker.exe
Size

63KB
MD5

4cc6f67c0fa9f278cbe06734bc6bb97e
SHA1

a6d56123da83ed80f072e99f91989a692e069871
SHA256

50ef5c15d6d59e08e2e05986fef1488af27250b878e7656efa6a7d4943c2d66c
SHA512

8f1b535f33ee3a834ba79ac553548c8463a9606efc99177e6d4381063907897747acf46c3965b39617e0f56d23e1553d0489459850fdd5cc38b90b53ba88ecfe
SSDEEP

1536:P8mnK6QFElP6n+gymddpMOtEvwDpjYibAoy:1nK6a+qdOOtEvwDpjo

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/1512-0-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1512-15-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2368-17-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x00090000000122be-14.dat	CryptoLocker_rule2
behavioral1/memory/2368-25-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral1/memory/1512-0-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_set1
behavioral1/memory/1512-15-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_set1
behavioral1/memory/2368-17-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_set1
behavioral1/files/0x00090000000122be-14.dat	CryptoLocker_set1
behavioral1/memory/2368-25-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral1/memory/1512-0-0x0000000000500000-0x000000000050F311-memory.dmp	UPX
behavioral1/memory/1512-15-0x0000000000500000-0x000000000050F311-memory.dmp	UPX
behavioral1/memory/2368-17-0x0000000000500000-0x000000000050F311-memory.dmp	UPX
behavioral1/files/0x00090000000122be-14.dat	UPX
behavioral1/memory/2368-25-0x0000000000500000-0x000000000050F311-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2368	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
1512	2024-03-12_4cc6f67c0fa9f278cbe06734bc6bb97e_cryptolocker.exe

UPX packed file 5 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral1/memory/1512-0-0x0000000000500000-0x000000000050F311-memory.dmp	upx
behavioral1/memory/1512-15-0x0000000000500000-0x000000000050F311-memory.dmp	upx
behavioral1/memory/2368-17-0x0000000000500000-0x000000000050F311-memory.dmp	upx
behavioral1/files/0x00090000000122be-14.dat	upx
behavioral1/memory/2368-25-0x0000000000500000-0x000000000050F311-memory.dmp	upx

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 1512 wrote to memory of 2368	1512	2024-03-12_4cc6f67c0fa9f278cbe06734bc6bb97e_cryptolocker.exe	28
PID 1512 wrote to memory of 2368	1512	2024-03-12_4cc6f67c0fa9f278cbe06734bc6bb97e_cryptolocker.exe	28
PID 1512 wrote to memory of 2368	1512	2024-03-12_4cc6f67c0fa9f278cbe06734bc6bb97e_cryptolocker.exe	28
PID 1512 wrote to memory of 2368	1512	2024-03-12_4cc6f67c0fa9f278cbe06734bc6bb97e_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-03-12_4cc6f67c0fa9f278cbe06734bc6bb97e_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-12_4cc6f67c0fa9f278cbe06734bc6bb97e_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1512
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2368

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

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

Filesize
63KB

MD5
2b1419dc2826da6086a43f27769c6975

SHA1
e60b20293eda2c2dac1496c6202a2b8350d430a0

SHA256
4e59763e7bca870aeda9334cc9acdc79ff34b01d24093a0aad5f65df1168bc76

SHA512
6a67c15780671d871c0f267b9160bbdda0ccba9beee858c9d4b424d390a6e57445a03afd824b9f12fdb2495484048be2b855c4b91c1aba1ec8e9776df071a319

Download Submit
memory/1512-0-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/1512-2-0x0000000000380000-0x0000000000386000-memory.dmp

Filesize
24KB

Download
memory/1512-9-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1512-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1512-15-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/2368-18-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2368-17-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/2368-25-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download