1fdfd401e07786b38a27180183657efa27618206167235b7471c6c545c875f77

Analysis

max time kernel
121s
max time network
122s
platform
windows7_x64
resource
win7-20240215-en
resource tags

arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system
submitted
23-05-2024 00:34

Target

2024-05-23_48db9084a6a3af3cf656451b4eea5f6a_cryptolocker.exe
Size

31KB
MD5

48db9084a6a3af3cf656451b4eea5f6a
SHA1

8417ca58f51a9d09be94dd6fdd05de2d5d0d693a
SHA256

1fdfd401e07786b38a27180183657efa27618206167235b7471c6c545c875f77
SHA512

fb2b6e1a159ea5f7474d9a16bd8148ed26b27a04c6ae593eb75e6b0dc64c89828770c5ac71aef7992071cf0605150cf3b748d7669e107851f8a8f071ea81e66f
SSDEEP

384:bM7Q0pjC4GybxMv01d3AcASBQMf6i/zznum+U8Ss87vhl:b/yC4GyNM01GuQMNXum+NSnl

Score

9^/10

Detection of CryptoLocker Variants 1 IoCs

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Local\Temp\retln.exe	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

Processes:

retln.exe

pid process

3064 retln.exe
Loads dropped DLL 1 IoCs

Processes:

2024-05-23_48db9084a6a3af3cf656451b4eea5f6a_cryptolocker.exe

pid process

1516 2024-05-23_48db9084a6a3af3cf656451b4eea5f6a_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

Processes:

2024-05-23_48db9084a6a3af3cf656451b4eea5f6a_cryptolocker.exeretln.exe

pid process

1516 2024-05-23_48db9084a6a3af3cf656451b4eea5f6a_cryptolocker.exe
3064 retln.exe

pid	process
3064	retln.exe

pid	process
1516	2024-05-23_48db9084a6a3af3cf656451b4eea5f6a_cryptolocker.exe

pid	process
1516	2024-05-23_48db9084a6a3af3cf656451b4eea5f6a_cryptolocker.exe
3064	retln.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

2024-05-23_48db9084a6a3af3cf656451b4eea5f6a_cryptolocker.exe

description	pid	process	target process
PID 1516 wrote to memory of 3064	1516	2024-05-23_48db9084a6a3af3cf656451b4eea5f6a_cryptolocker.exe	retln.exe
PID 1516 wrote to memory of 3064	1516	2024-05-23_48db9084a6a3af3cf656451b4eea5f6a_cryptolocker.exe	retln.exe
PID 1516 wrote to memory of 3064	1516	2024-05-23_48db9084a6a3af3cf656451b4eea5f6a_cryptolocker.exe	retln.exe
PID 1516 wrote to memory of 3064	1516	2024-05-23_48db9084a6a3af3cf656451b4eea5f6a_cryptolocker.exe	retln.exe

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

C:\Users\Admin\AppData\Local\Temp\retln.exe
Filesize
31KB

MD5
f08cae77647b9d67996526bda2239657

SHA1
c4b88b5410ecd648b32c7917ad92d8400538c79e

SHA256
df2bffd40af92246018135a8380ea8c091033e62165a4637e074851a99d8f92a

SHA512
482261f051aaace65adacd5f69dc0e3f5c3b688f0d946196c5a484bb13fd8f019eebe30a2fea661cf49e7de3e1a7a0442ec32f6fb099adfa67cae4489ba39f74

Download Submit
memory/1516-0-0x0000000000300000-0x0000000000306000-memory.dmp

Filesize
24KB

Download
memory/1516-8-0x0000000000300000-0x0000000000306000-memory.dmp

Filesize
24KB

Download
memory/1516-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/3064-23-0x0000000000380000-0x0000000000386000-memory.dmp

Filesize
24KB

Download