045497dbe7f8926d3c3feabc8d9a34a3f6bf479d2989a7619cb91ae2e172deaf

Analysis

max time kernel
148s
max time network
148s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
17/02/2024, 11:27

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General

Target

2024-02-17_2add5518c41aa94a85509a0f0bfa6b81_cryptolocker.exe
Size

41KB
MD5

2add5518c41aa94a85509a0f0bfa6b81
SHA1

3dce4327d8cbd55f00b2d5e14a2294ed4cfed72f
SHA256

045497dbe7f8926d3c3feabc8d9a34a3f6bf479d2989a7619cb91ae2e172deaf
SHA512

c89d652994f8886c9916bcc51f7885a2182d4e16807c6469be6e370fbec4a29f60fdd9566a90e567fd35b0c27360dd3f816cc555fceacea4b29e70fe257108a4
SSDEEP

384:e/4wODQkzonAYsju5N/surDQtOOtEvwDpjqIGROqS/Wcz0BVFHxMindB:79inqyNR/QtOOtEvwDpjBKcmfxMir

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral1/memory/2220-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000b000000015cfa-11.dat	CryptoLocker_rule2
behavioral1/memory/2220-15-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1768-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral1/memory/2220-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000b000000015cfa-11.dat	CryptoLocker_set1
behavioral1/memory/2220-15-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/1768-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
1768	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2220	2024-02-17_2add5518c41aa94a85509a0f0bfa6b81_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 2220 wrote to memory of 1768	2220	2024-02-17_2add5518c41aa94a85509a0f0bfa6b81_cryptolocker.exe	28
PID 2220 wrote to memory of 1768	2220	2024-02-17_2add5518c41aa94a85509a0f0bfa6b81_cryptolocker.exe	28
PID 2220 wrote to memory of 1768	2220	2024-02-17_2add5518c41aa94a85509a0f0bfa6b81_cryptolocker.exe	28
PID 2220 wrote to memory of 1768	2220	2024-02-17_2add5518c41aa94a85509a0f0bfa6b81_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-02-17_2add5518c41aa94a85509a0f0bfa6b81_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-17_2add5518c41aa94a85509a0f0bfa6b81_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2220
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1768

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
c8caf519ee08e2d1e2358e892db602ac

SHA1
e5827c3fa053d6b8cc2eea79de34ac52a58a91b7

SHA256
b8af68e8841391a53521c37a5295330796b2f1b20b3226274bddb9baa73508c9

SHA512
6b4a7dbf2e79f058c01487cc616e857af1bbab7ee54c069ded35eb10b394b277a8b41c5d4f646ab0fee959fb270ea912b7db68843a15185f7ae5160a6d0e6caa

Download Submit
memory/1768-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/1768-18-0x0000000000290000-0x0000000000296000-memory.dmp

Filesize
24KB

Download
memory/1768-25-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/2220-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2220-1-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2220-2-0x0000000000520000-0x0000000000526000-memory.dmp

Filesize
24KB

Download
memory/2220-9-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2220-15-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download