1882dfc808d58f3ab95458f69b19b3de4c37832c9b8461a88006de1d65337868

Analysis

max time kernel
150s
max time network
150s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
13/06/2024, 03:28

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General

Target

2024-06-13_2d2804039bf69046c0860221650ab38d_cryptolocker.exe
Size

44KB
MD5

2d2804039bf69046c0860221650ab38d
SHA1

b34a99dfe241460a03c7f3451e2dc957ebe3f364
SHA256

1882dfc808d58f3ab95458f69b19b3de4c37832c9b8461a88006de1d65337868
SHA512

b6cde73a4f88f3bac3a5db716a78f6b77a54162b7be48ab0a2fbb337666a1a6b9f4bf48c13bc2d8386340950d9bb392dc505e3329e04af07eebbf7af6fa83032
SSDEEP

768:bCDOw9UiaKHfjnD0S16avdrQFiLjJvtAHts:bCDOw9aMDooc+vANs

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 6 IoCs

resource	yara_rule
behavioral1/memory/1632-0-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000a0000000122b8-11.dat	CryptoLocker_rule2
behavioral1/memory/1632-13-0x00000000022D0000-0x00000000022DA000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1632-16-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1912-17-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1912-27-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
1912	lossy.exe

Loads dropped DLL 1 IoCs

pid	Process
1632	2024-06-13_2d2804039bf69046c0860221650ab38d_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 1632 wrote to memory of 1912	1632	2024-06-13_2d2804039bf69046c0860221650ab38d_cryptolocker.exe	28
PID 1632 wrote to memory of 1912	1632	2024-06-13_2d2804039bf69046c0860221650ab38d_cryptolocker.exe	28
PID 1632 wrote to memory of 1912	1632	2024-06-13_2d2804039bf69046c0860221650ab38d_cryptolocker.exe	28
PID 1632 wrote to memory of 1912	1632	2024-06-13_2d2804039bf69046c0860221650ab38d_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-06-13_2d2804039bf69046c0860221650ab38d_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-13_2d2804039bf69046c0860221650ab38d_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1632
- C:\Users\Admin\AppData\Local\Temp\lossy.exe
  "C:\Users\Admin\AppData\Local\Temp\lossy.exe"
  2⤵
  - Executes dropped EXE
  PID:1912

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\lossy.exe

Filesize
44KB

MD5
91f232336db4a995a1af9596b7dadb7a

SHA1
b8ad2d0e02a3de92f6b93de06db043260b4efa1d

SHA256
b35dd1c88b5d0d06ddb50940acd8e560a243e9dfbf5cb6cd54a873ef8371924b

SHA512
cb94b044a11de1dccdc3d175fc269d5557ffe70987ccc5f50ab0399bba9bcb2e6d6b97015eba4f1bd77c3008da502edce532cdd41b8f26912b42fc434c1f839d

Download Submit
memory/1632-0-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/1632-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1632-3-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download
memory/1632-2-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1632-13-0x00000000022D0000-0x00000000022DA000-memory.dmp

Filesize
40KB

Download
memory/1632-16-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/1912-19-0x0000000001C90000-0x0000000001C96000-memory.dmp

Filesize
24KB

Download
memory/1912-17-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/1912-26-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/1912-27-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download