60bb4881a108382592437e9d964a4ce98328e0d197d34137fb8b3106a53a54ec

Analysis

max time kernel
149s
max time network
150s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
26-03-2024 23:34

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General

Target

2024-03-26_658120adfa9a214f3e1caa9388177ef5_cryptolocker.exe
Size

40KB
MD5

658120adfa9a214f3e1caa9388177ef5
SHA1

ed7492aca6d8f181e2ecd97b4c71fe32677dcfc3
SHA256

60bb4881a108382592437e9d964a4ce98328e0d197d34137fb8b3106a53a54ec
SHA512

451f8b0fb6d7447ac9afed0a5d6631aaa80646442d06e490400d24f9d980e1a112797cf9776b3c3ff65595c48e4701b1695d1a610b4b5feac9219d9669a52427
SSDEEP

768:bCDOw9UiaKHfjnD0S16avdrQFiLjJvtAB:bCDOw9aMDooc+vAB

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/1812-0-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000b00000001224d-11.dat	CryptoLocker_rule2
behavioral1/memory/1812-15-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1700-17-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1700-26-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
1700	lossy.exe

Loads dropped DLL 1 IoCs

pid	Process
1812	2024-03-26_658120adfa9a214f3e1caa9388177ef5_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 1812 wrote to memory of 1700	1812	2024-03-26_658120adfa9a214f3e1caa9388177ef5_cryptolocker.exe	28
PID 1812 wrote to memory of 1700	1812	2024-03-26_658120adfa9a214f3e1caa9388177ef5_cryptolocker.exe	28
PID 1812 wrote to memory of 1700	1812	2024-03-26_658120adfa9a214f3e1caa9388177ef5_cryptolocker.exe	28
PID 1812 wrote to memory of 1700	1812	2024-03-26_658120adfa9a214f3e1caa9388177ef5_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-03-26_658120adfa9a214f3e1caa9388177ef5_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-26_658120adfa9a214f3e1caa9388177ef5_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1812
- C:\Users\Admin\AppData\Local\Temp\lossy.exe
  "C:\Users\Admin\AppData\Local\Temp\lossy.exe"
  2⤵
  - Executes dropped EXE
  PID:1700

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
40KB

MD5
80c85303bfd332d661e550489ed5dbda

SHA1
a4e051bc3a6cfc24b4ecc06fb25cc96e852b73b9

SHA256
1f9b6ea92f90e0d520c87edb85658e8d83f399cd6274fadfd44ee9bb432da3c8

SHA512
054d12029c61d9177d396741e5f7d4b83683501caf3509e848cb13166d68e9ebc9674c86d7104a22269e24fa5a8b0681e7c49f60b9c05971b3b650c959924f7c

Download Submit
memory/1700-17-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/1700-18-0x0000000000460000-0x0000000000466000-memory.dmp

Filesize
24KB

Download
memory/1700-25-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/1700-26-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/1812-0-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/1812-1-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/1812-2-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/1812-3-0x0000000001C90000-0x0000000001C96000-memory.dmp

Filesize
24KB

Download
memory/1812-15-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download