49b82b9251c51ca898c14301bb344ca4c397c4615df54ad6abe843117a7860e0

Analysis

max time kernel
117s
max time network
121s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
11/03/2024, 01:45

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General

Target

2024-03-11_1740acc07d8ae8fcd9c31df24966d65b_cryptolocker.exe
Size

33KB
MD5

1740acc07d8ae8fcd9c31df24966d65b
SHA1

5072cccc531a8af26e3e9199b423786311cbb176
SHA256

49b82b9251c51ca898c14301bb344ca4c397c4615df54ad6abe843117a7860e0
SHA512

dd3d34531c031c3c379dc018abb43619395ec4f42b271f9e0a4a558b66b887782c140fe0156cc1e558f7bc30238169b71e74231a90adb77da4d155889dbcfdf8
SSDEEP

384:bM7Q0pjC4GybxMv01d3AcASBQMf6i/zzzcYgUPSznHzl6A0X/EZ:b/yC4GyNM01GuQMNXw2PSjH+PW

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000b000000012267-10.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
2600	retln.exe

Loads dropped DLL 1 IoCs

pid	Process
1648	2024-03-11_1740acc07d8ae8fcd9c31df24966d65b_cryptolocker.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of UnmapMainImage 2 IoCs

pid	Process
1648	2024-03-11_1740acc07d8ae8fcd9c31df24966d65b_cryptolocker.exe
2600	retln.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1648 wrote to memory of 2600	1648	2024-03-11_1740acc07d8ae8fcd9c31df24966d65b_cryptolocker.exe	28
PID 1648 wrote to memory of 2600	1648	2024-03-11_1740acc07d8ae8fcd9c31df24966d65b_cryptolocker.exe	28
PID 1648 wrote to memory of 2600	1648	2024-03-11_1740acc07d8ae8fcd9c31df24966d65b_cryptolocker.exe	28
PID 1648 wrote to memory of 2600	1648	2024-03-11_1740acc07d8ae8fcd9c31df24966d65b_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-03-11_1740acc07d8ae8fcd9c31df24966d65b_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-11_1740acc07d8ae8fcd9c31df24966d65b_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:1648
- C:\Users\Admin\AppData\Local\Temp\retln.exe
  "C:\Users\Admin\AppData\Local\Temp\retln.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of UnmapMainImage
  PID:2600

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\retln.exe

Filesize
33KB

MD5
615d5db9c44832c0da54ef219c097cf7

SHA1
944566d37d931e798917fa113cbaeb2770f063fc

SHA256
5d0a0e69c10b98047139978aafd3b33be617a765227580934683598abcda9b19

SHA512
c4ca447c0445d14804d61472f1fe3c87e62c4d0c94a87fb43dad531ffc2008a0f1683f9f6861271be52dde27da1e594ec5e1e599fa9b48d39c90f6839c737cb6

Download Submit
memory/1648-0-0x00000000003E0000-0x00000000003E6000-memory.dmp

Filesize
24KB

Download
memory/1648-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/1648-1-0x00000000003E0000-0x00000000003E6000-memory.dmp

Filesize
24KB

Download
memory/2600-17-0x0000000000320000-0x0000000000326000-memory.dmp

Filesize
24KB

Download