a397c1dc15de721d5f83ff6540019ac966111852cc2744f0e57efb8f6c470eec

Analysis

max time kernel
148s
max time network
154s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
29/05/2024, 06:38

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General

Target

2024-05-29_707ad8f35093f671790dafdf7a3491be_cryptolocker.exe
Size

44KB
MD5

707ad8f35093f671790dafdf7a3491be
SHA1

e837da4b8b643cc7acff31c3c2f5f6ef2269891b
SHA256

a397c1dc15de721d5f83ff6540019ac966111852cc2744f0e57efb8f6c470eec
SHA512

8506794f1de656ac5742f43446a1a1cbb97c9743ac87621030a4ee5a63481fd4ff9369adaad6c5fbae031a46a755e087b3d3af41d59e6bc388160e71bb7f8aa6
SSDEEP

384:bm74uGLLQRcsdeQ72ngEr4K7YmE8jb0nrlwfjDUki:bm74zYcgT/EkM0ryfjdi

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/2740-0-0x0000000008000000-0x000000000800D000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000b0000000155e2-11.dat	CryptoLocker_rule2
behavioral1/memory/2484-17-0x0000000008000000-0x000000000800D000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2740-14-0x0000000008000000-0x000000000800D000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2484-28-0x0000000008000000-0x000000000800D000-memory.dmp	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
2484	hasfj.exe

Loads dropped DLL 1 IoCs

pid	Process
2740	2024-05-29_707ad8f35093f671790dafdf7a3491be_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 2740 wrote to memory of 2484	2740	2024-05-29_707ad8f35093f671790dafdf7a3491be_cryptolocker.exe	28
PID 2740 wrote to memory of 2484	2740	2024-05-29_707ad8f35093f671790dafdf7a3491be_cryptolocker.exe	28
PID 2740 wrote to memory of 2484	2740	2024-05-29_707ad8f35093f671790dafdf7a3491be_cryptolocker.exe	28
PID 2740 wrote to memory of 2484	2740	2024-05-29_707ad8f35093f671790dafdf7a3491be_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-29_707ad8f35093f671790dafdf7a3491be_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-29_707ad8f35093f671790dafdf7a3491be_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2740
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:2484

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

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Downloads

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

Filesize
44KB

MD5
58b3e67461bc7c5c427ad73c5e82dd4b

SHA1
05b791a5e7e833d73db24ddcf3ffac85aaeb9800

SHA256
55a0e7bbeb2cd887a23ec64513b281c3018ff29be118393d80c80b2d1667cc5d

SHA512
c34bd130c3dd5ed48d11af6b70a78f6b585aac5e5dc0112f9ead4842f345383679ea425353aee4f7de87dc1b19085dc1530a432cd0346f2d05b11040214eb6d9

Download Submit
memory/2484-17-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download
memory/2484-26-0x0000000001C80000-0x0000000001C86000-memory.dmp

Filesize
24KB

Download
memory/2484-19-0x0000000001CA0000-0x0000000001CA6000-memory.dmp

Filesize
24KB

Download
memory/2484-28-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download
memory/2740-0-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download
memory/2740-1-0x0000000000360000-0x0000000000366000-memory.dmp

Filesize
24KB

Download
memory/2740-9-0x0000000000360000-0x0000000000366000-memory.dmp

Filesize
24KB

Download
memory/2740-2-0x0000000000380000-0x0000000000386000-memory.dmp

Filesize
24KB

Download
memory/2740-15-0x0000000002DF0000-0x0000000002DFD000-memory.dmp

Filesize
52KB

Download
memory/2740-14-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download
memory/2740-27-0x0000000002DF0000-0x0000000002DFD000-memory.dmp

Filesize
52KB

Download