51f0347d2f56a888b2641e3e960ada8d45073009e34b9ce8e8cea40497fb63a6

Analysis

max time kernel
149s
max time network
154s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
29/05/2024, 23:31

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-05-29_83aa3b045e7da1a7911be634a18491df_cryptolocker.exe
Size

44KB
MD5

83aa3b045e7da1a7911be634a18491df
SHA1

c541207982ab3317911a6b5cede2bad3ffac065f
SHA256

51f0347d2f56a888b2641e3e960ada8d45073009e34b9ce8e8cea40497fb63a6
SHA512

0ec947d8d291234b03e8a50baa712e939fbed232ee159ece9bd599d43494af046fc3e6441c6eb478314ef2693dbe38b3d003c895cafd82d33d0759dcf771d614
SSDEEP

768:bCDOw9UiaKHfjnD0S16avdrQFiLjJvtAIie0E:bCDOw9aMDooc+vAl4

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral1/memory/1044-0-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000b000000015d31-11.dat	CryptoLocker_rule2
behavioral1/memory/2384-18-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1044-15-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
2384	lossy.exe

Loads dropped DLL 1 IoCs

pid	Process
1044	2024-05-29_83aa3b045e7da1a7911be634a18491df_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 1044 wrote to memory of 2384	1044	2024-05-29_83aa3b045e7da1a7911be634a18491df_cryptolocker.exe	28
PID 1044 wrote to memory of 2384	1044	2024-05-29_83aa3b045e7da1a7911be634a18491df_cryptolocker.exe	28
PID 1044 wrote to memory of 2384	1044	2024-05-29_83aa3b045e7da1a7911be634a18491df_cryptolocker.exe	28
PID 1044 wrote to memory of 2384	1044	2024-05-29_83aa3b045e7da1a7911be634a18491df_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-29_83aa3b045e7da1a7911be634a18491df_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-29_83aa3b045e7da1a7911be634a18491df_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1044
- C:\Users\Admin\AppData\Local\Temp\lossy.exe
  "C:\Users\Admin\AppData\Local\Temp\lossy.exe"
  2⤵
  - Executes dropped EXE
  PID:2384

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

Loading Replay Monitor...

Downloads

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

Filesize
44KB

MD5
b2fc8a0bf0d9b525e324184b57573f45

SHA1
5324a183973d0c13edbec3761762497497abe752

SHA256
10c64320407757bd1e49d8cf3361d9c68f49415afeefcfdc5a6e292b960995ae

SHA512
7650489479c1f413eb063f7a3fbbc44e06aadebaffb328a6654c588e6511079a367e40585b222886202c0d3ef3bb2ddec22a664737c6406c51870fcfeb8de87f

Download Submit
memory/1044-1-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/1044-0-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/1044-2-0x0000000000300000-0x0000000000306000-memory.dmp

Filesize
24KB

Download
memory/1044-9-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/1044-15-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/2384-18-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/2384-17-0x00000000005C0000-0x00000000005C6000-memory.dmp

Filesize
24KB

Download
memory/2384-19-0x0000000000600000-0x0000000000606000-memory.dmp

Filesize
24KB

Download