6f1d951f9283b6ab4e8386529ba7d4639ed750f80cfe549606e541e8f8b9361c

Analysis

max time kernel
149s
max time network
153s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
25/02/2024, 05:35

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General

Target

2024-02-25_406e32523962af6d352d454b117c317a_cryptolocker.exe
Size

60KB
MD5

406e32523962af6d352d454b117c317a
SHA1

22bf91ce7fcac012f66c6bb79b6479ae15b897e4
SHA256

6f1d951f9283b6ab4e8386529ba7d4639ed750f80cfe549606e541e8f8b9361c
SHA512

989afe5a62e5a7586b63df8679e03c204cd9e9efe2613e0a671b1ad18d652a286e3e13d7522be60ffbd81ca271a6d3b5f11f376c9c884ea75a2ea725645e9bdd
SSDEEP

1536:qmbhXDmjr5MOtEvwDpj5cDtKkQZQRKb614j:BbdDmjr+OtEvwDpjMQ

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/1716-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000700000001227e-11.dat	CryptoLocker_rule2
behavioral1/memory/1716-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2040-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2040-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral1/memory/1716-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2040-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2040-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral1/memory/1716-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x000700000001227e-11.dat	UPX
behavioral1/memory/1716-15-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2040-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2040-26-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2040	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
1716	2024-02-25_406e32523962af6d352d454b117c317a_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 1716 wrote to memory of 2040	1716	2024-02-25_406e32523962af6d352d454b117c317a_cryptolocker.exe	28
PID 1716 wrote to memory of 2040	1716	2024-02-25_406e32523962af6d352d454b117c317a_cryptolocker.exe	28
PID 1716 wrote to memory of 2040	1716	2024-02-25_406e32523962af6d352d454b117c317a_cryptolocker.exe	28
PID 1716 wrote to memory of 2040	1716	2024-02-25_406e32523962af6d352d454b117c317a_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-02-25_406e32523962af6d352d454b117c317a_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-25_406e32523962af6d352d454b117c317a_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1716
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2040

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\asih.exe

Filesize
60KB

MD5
73bda112a3dd1537f44c2807f17080d0

SHA1
8d83e3418e6f30a118e99bfe583c2cf8a039ae68

SHA256
fbbdf3a23a33fb28bc228d8248033f300f0768e7a99a542c64b70fb153696ca4

SHA512
f3739f7a340e646fd99b956154c5dc38843e6dc6dfe3600b0d507974b86122962137c5df558a0748bae284857f7da7b69711ea19162437ba87c333a179e96565

Download Submit
memory/1716-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1716-1-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/1716-2-0x00000000002F0000-0x00000000002F6000-memory.dmp

Filesize
24KB

Download
memory/1716-4-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/1716-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2040-18-0x0000000000460000-0x0000000000466000-memory.dmp

Filesize
24KB

Download
memory/2040-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2040-20-0x0000000000420000-0x0000000000426000-memory.dmp

Filesize
24KB

Download
memory/2040-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download