bc85efa700216432db5ebbc8c70106e9cbf898120c0f74f0f6ca4a5625a70336

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
22-05-2024 02:47

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General

Target

2024-05-22_be8bea3c4d348c61efd594c39b2fbd56_cryptolocker.exe
Size

41KB
MD5

be8bea3c4d348c61efd594c39b2fbd56
SHA1

0a6011a2cb06de44030e61e605eb3699b283f924
SHA256

bc85efa700216432db5ebbc8c70106e9cbf898120c0f74f0f6ca4a5625a70336
SHA512

a1def7c13dff5a10420c8c7d97957b40d779df9a45502a08cf6218f277d47a24ebb3ab0f059640dc54b741cc0c6e0aa58e7548d9ce24c365d2f931a14272b38d
SSDEEP

768:X6LsoEEeegiZPvEhHSG+gp/QtOOtEvwDpjBaac4HK/wSvuQTCjJ:X6QFElP6n+gJQMOtEvwDpjBsYK/f4J

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000b000000014230-10.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x000b000000014230-10.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2788	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2684	2024-05-22_be8bea3c4d348c61efd594c39b2fbd56_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 2684 wrote to memory of 2788	2684	2024-05-22_be8bea3c4d348c61efd594c39b2fbd56_cryptolocker.exe	28
PID 2684 wrote to memory of 2788	2684	2024-05-22_be8bea3c4d348c61efd594c39b2fbd56_cryptolocker.exe	28
PID 2684 wrote to memory of 2788	2684	2024-05-22_be8bea3c4d348c61efd594c39b2fbd56_cryptolocker.exe	28
PID 2684 wrote to memory of 2788	2684	2024-05-22_be8bea3c4d348c61efd594c39b2fbd56_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-22_be8bea3c4d348c61efd594c39b2fbd56_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-22_be8bea3c4d348c61efd594c39b2fbd56_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2684
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2788

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
41KB

MD5
57b51931adcd84704b58c81852428aec

SHA1
e8a6338de0c002845f37a35e2abb3e2e9e073003

SHA256
fa2f771617ed5a384f35d34a680055a2bc3c0910178358306668ebcb695da267

SHA512
943b3c7af188981f39c9765c5c181dc33163f97f25a8176f18d0e2c78cb0121aea87101dec14a152e7ad5af4deb83300013b31e90080e3411312e7d0b6569f5e

Download Submit
memory/2684-0-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/2684-1-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/2684-2-0x0000000000290000-0x0000000000296000-memory.dmp

Filesize
24KB

Download
memory/2788-15-0x0000000000340000-0x0000000000346000-memory.dmp

Filesize
24KB

Download
memory/2788-22-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download