9feb69cd7d8e5fb25a3d0c7edeede5f1acfd60f099df24e7fd0005d3e73b2663

Analysis

max time kernel
148s
max time network
149s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
18/04/2024, 12:58

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General

Target

2024-04-18_db1b052fb2acd9803daed818b2697a8e_cryptolocker.exe
Size

69KB
MD5

db1b052fb2acd9803daed818b2697a8e
SHA1

42034ffafcec8e5c30d024496ad627be3186169a
SHA256

9feb69cd7d8e5fb25a3d0c7edeede5f1acfd60f099df24e7fd0005d3e73b2663
SHA512

440890496e70937b713431b126d752b1f3b9a075319715f8301565e445c8b9064c9a6d81da7e0b40c00a6adfce243ea1e85230d1b8491100f52b1ab27600ba53
SSDEEP

1536:Dk/xY0sllyGQMOtEvwDpjwycDtKkQZQRKb61vSbgZ3QzNKU50l:DW60sllyWOtEvwDpjwF85y

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/112-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000b00000001224f-11.dat	CryptoLocker_rule2
behavioral1/memory/112-12-0x00000000008B0000-0x00000000008BB000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1580-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/112-15-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral1/memory/112-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000b00000001224f-11.dat	CryptoLocker_set1
behavioral1/memory/112-12-0x00000000008B0000-0x00000000008BB000-memory.dmp	CryptoLocker_set1
behavioral1/memory/1580-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral1/memory/112-15-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
1580	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
112	2024-04-18_db1b052fb2acd9803daed818b2697a8e_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 112 wrote to memory of 1580	112	2024-04-18_db1b052fb2acd9803daed818b2697a8e_cryptolocker.exe	28
PID 112 wrote to memory of 1580	112	2024-04-18_db1b052fb2acd9803daed818b2697a8e_cryptolocker.exe	28
PID 112 wrote to memory of 1580	112	2024-04-18_db1b052fb2acd9803daed818b2697a8e_cryptolocker.exe	28
PID 112 wrote to memory of 1580	112	2024-04-18_db1b052fb2acd9803daed818b2697a8e_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-18_db1b052fb2acd9803daed818b2697a8e_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-18_db1b052fb2acd9803daed818b2697a8e_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:112
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1580

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
69KB

MD5
3e22c99e9057cf9b69a11b254eb71bcd

SHA1
e62c2466b3fec0d9204c9ba3705b49b374c48d08

SHA256
6fb18353ca5cffc8b97db1e48680cd0923ca3d85b37820b50a47259868896e3f

SHA512
0f20173e265ee2b8ad424b095b2580e42e301c31f7dd752f5b4b42b864f7632737df9f242c77079ead9e94d8ae55372967ca59b46256a305172795d1c92127d5

Download Submit
memory/112-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/112-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/112-2-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/112-9-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/112-12-0x00000000008B0000-0x00000000008BB000-memory.dmp

Filesize
44KB

Download
memory/112-15-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/1580-17-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/1580-19-0x0000000000300000-0x0000000000306000-memory.dmp

Filesize
24KB

Download