52b750189e0c5404129b962e89bceb5ffee06082a70cb6012b2eb738f88ac4b2

Analysis

max time kernel
149s
max time network
153s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
05/03/2024, 14:51

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-03-05_e49573676c577a04c655cf2334312a79_cryptolocker.exe
Size

49KB
MD5

e49573676c577a04c655cf2334312a79
SHA1

87553201972718a4281bf069030b10c36c4150aa
SHA256

52b750189e0c5404129b962e89bceb5ffee06082a70cb6012b2eb738f88ac4b2
SHA512

1542b631579eaf2980a98ac29c13af3cb6fbc8a59eec2a3705513ce2d9b3977e63ab950ae55ca982bec62218afbb4d282e253f74068b9aee435535a5923200aa
SSDEEP

768:79inqyNR/QtOOtEvwDpjBK/rJ+Nw8qnTNVa:79mqyNhQMOtEvwDpjBxe81

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral1/memory/2504-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000b00000001224c-11.dat	CryptoLocker_rule2
behavioral1/memory/2504-14-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2812-18-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral1/memory/2504-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000b00000001224c-11.dat	CryptoLocker_set1
behavioral1/memory/2504-14-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2812-18-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2812	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2504	2024-03-05_e49573676c577a04c655cf2334312a79_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 2504 wrote to memory of 2812	2504	2024-03-05_e49573676c577a04c655cf2334312a79_cryptolocker.exe	28
PID 2504 wrote to memory of 2812	2504	2024-03-05_e49573676c577a04c655cf2334312a79_cryptolocker.exe	28
PID 2504 wrote to memory of 2812	2504	2024-03-05_e49573676c577a04c655cf2334312a79_cryptolocker.exe	28
PID 2504 wrote to memory of 2812	2504	2024-03-05_e49573676c577a04c655cf2334312a79_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-03-05_e49573676c577a04c655cf2334312a79_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-05_e49573676c577a04c655cf2334312a79_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2504
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2812

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

Loading Replay Monitor...

Downloads

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

Filesize
49KB

MD5
bf6f71ed6f2a1a3ab7173b856d29bf42

SHA1
53024131e59ed8546ac2dc5d1b3efaf6e41b6bb4

SHA256
7bd910bb1a60c243554a5e5e4ca5a6714f80096665605ea2483d12456d0438e9

SHA512
32c7fdb06c0ae8e4355a90360ff302cad3b49c75408c309259470d0708525bc315657ca3f62b34c3869bb69f7c632048f69c087baabc6c6735f6cfc6604fdb0d

Download Submit
memory/2504-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2504-1-0x0000000000300000-0x0000000000306000-memory.dmp

Filesize
24KB

Download
memory/2504-2-0x00000000004A0000-0x00000000004A6000-memory.dmp

Filesize
24KB

Download
memory/2504-6-0x0000000000300000-0x0000000000306000-memory.dmp

Filesize
24KB

Download
memory/2504-16-0x0000000002480000-0x000000000248F000-memory.dmp

Filesize
60KB

Download
memory/2504-14-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2812-18-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2812-20-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2812-19-0x0000000000270000-0x0000000000276000-memory.dmp

Filesize
24KB

Download