590f7c2a93ce8628abf9013dbf48324da51370626480dfc2f4dcc67e7055365d

Analysis

max time kernel
149s
max time network
153s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
04/02/2024, 06:35

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General

Target

2024-02-04_9352f1a25b7eb11b56edd67379a438fd_cryptolocker.exe
Size

43KB
MD5

9352f1a25b7eb11b56edd67379a438fd
SHA1

e70ded9db8057f2e9127574429b012263a7bd6f9
SHA256

590f7c2a93ce8628abf9013dbf48324da51370626480dfc2f4dcc67e7055365d
SHA512

b5ac210c8557868b59bcec36cf13aa889fa350f69c1ee69225f6497e50ecc3d963b985fd8a3d8963c73ac116876f591c2d73a5ef93e775ea27f55765def4a609
SSDEEP

384:e/4wODQkzonAYsju5N/surDQtOOtEvwDpjqIGROqS/WccJVJwi2B5oCCM8CLV:79inqyNR/QtOOtEvwDpjBKccJVODvy34

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral1/memory/2400-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000b000000012238-11.dat	CryptoLocker_rule2
behavioral1/memory/2400-15-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2696-16-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral1/memory/2400-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000b000000012238-11.dat	CryptoLocker_set1
behavioral1/memory/2400-15-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2696-16-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2696	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2400	2024-02-04_9352f1a25b7eb11b56edd67379a438fd_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 2400 wrote to memory of 2696	2400	2024-02-04_9352f1a25b7eb11b56edd67379a438fd_cryptolocker.exe	28
PID 2400 wrote to memory of 2696	2400	2024-02-04_9352f1a25b7eb11b56edd67379a438fd_cryptolocker.exe	28
PID 2400 wrote to memory of 2696	2400	2024-02-04_9352f1a25b7eb11b56edd67379a438fd_cryptolocker.exe	28
PID 2400 wrote to memory of 2696	2400	2024-02-04_9352f1a25b7eb11b56edd67379a438fd_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-02-04_9352f1a25b7eb11b56edd67379a438fd_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-04_9352f1a25b7eb11b56edd67379a438fd_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2400
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2696

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
43KB

MD5
51ff7eb44ee5844590ad03b7beb25fa6

SHA1
f5fd5dd723fe766317c242d70d1589a679dba7af

SHA256
3b131611959a69d420a79744decb0a4638cd41689905ae8f9d00e2d5c5387d90

SHA512
82c925f05993081c7a77c0ffc3cedd902bcb9ce03a771a8997b16f504fa450134418167946273ef4e4a5c6f33b611b593f6d4f754c415f91a0d6d8849d57a9a6

Download Submit
memory/2400-1-0x00000000003C0000-0x00000000003C6000-memory.dmp

Filesize
24KB

Download
memory/2400-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2400-2-0x00000000003F0000-0x00000000003F6000-memory.dmp

Filesize
24KB

Download
memory/2400-4-0x00000000003C0000-0x00000000003C6000-memory.dmp

Filesize
24KB

Download
memory/2400-15-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2696-16-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2696-18-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2696-19-0x0000000000370000-0x0000000000376000-memory.dmp

Filesize
24KB

Download