7cffaaac6db1786848ddc392ffeddd3d7db50be1008e1d8729068bd0cf9a809a

Analysis

max time kernel
13s
max time network
122s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
23/04/2024, 11:23

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General

Target

2024-04-23_3fa374542932327d22e2df21d195d7a0_cryptolocker.exe
Size

42KB
MD5

3fa374542932327d22e2df21d195d7a0
SHA1

052ef059a09ceb0eda30533ff56d1c700b7fbd05
SHA256

7cffaaac6db1786848ddc392ffeddd3d7db50be1008e1d8729068bd0cf9a809a
SHA512

9d63f2ce1a46a7ebc9813d23beec8634d4471050f95cedf8674a3fcc989f8711889432f19320d747e384287d76e4a3819b7a668c38147408bb93194546f3c535
SSDEEP

768:b/yC4GyNM01GuQMNXw2PSjHPbSuYlW8PA9DU3:b/pYayGig5HjS3NPA9D0

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000800000001222a-12.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
2916	retln.exe

Loads dropped DLL 1 IoCs

pid	Process
1284	2024-04-23_3fa374542932327d22e2df21d195d7a0_cryptolocker.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of UnmapMainImage 2 IoCs

pid	Process
1284	2024-04-23_3fa374542932327d22e2df21d195d7a0_cryptolocker.exe
2916	retln.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1284 wrote to memory of 2916	1284	2024-04-23_3fa374542932327d22e2df21d195d7a0_cryptolocker.exe	28
PID 1284 wrote to memory of 2916	1284	2024-04-23_3fa374542932327d22e2df21d195d7a0_cryptolocker.exe	28
PID 1284 wrote to memory of 2916	1284	2024-04-23_3fa374542932327d22e2df21d195d7a0_cryptolocker.exe	28
PID 1284 wrote to memory of 2916	1284	2024-04-23_3fa374542932327d22e2df21d195d7a0_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-23_3fa374542932327d22e2df21d195d7a0_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-23_3fa374542932327d22e2df21d195d7a0_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:1284
- C:\Users\Admin\AppData\Local\Temp\retln.exe
  "C:\Users\Admin\AppData\Local\Temp\retln.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of UnmapMainImage
  PID:2916

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

C:\Users\Admin\AppData\Local\Temp\retln.exe

Filesize
42KB

MD5
554dc6be768504b900e2fe89ecedd345

SHA1
3a671e252703490eedbdcd5b01a20e96250ad721

SHA256
2ad9867d3e7682a9113c7a4623708979929deb297a55e5effba6ec291aefa8c4

SHA512
fa2ad79b68eb9a86be370bffdb1af4d9c71c164c9f0d4efee539ae69f1fbbeebdbc839be94b7a0d260b76d85cd1c4fcbfef1ca2a42d0f066537403840c96aadd

Download Submit
memory/1284-0-0x0000000000260000-0x0000000000266000-memory.dmp

Filesize
24KB

Download
memory/1284-1-0x0000000000260000-0x0000000000266000-memory.dmp

Filesize
24KB

Download
memory/1284-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2916-18-0x00000000002E0000-0x00000000002E6000-memory.dmp

Filesize
24KB

Download