0d2fa4dca03312d35baf7a06ebcb0e784d6348aecc628a015067eb0ff473d2c1

Analysis

max time kernel
147s
max time network
149s
platform
windows7_x64
resource
win7-20240508-en
resource tags

arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
submitted
01/06/2024, 13:28

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General

Target

2024-06-01_32b2b3fd2a1a78370d4fec53bb7d2a14_cryptolocker.exe
Size

40KB
MD5

32b2b3fd2a1a78370d4fec53bb7d2a14
SHA1

5b4ea47498dc2f7af58978cd007479ab7e4d2194
SHA256

0d2fa4dca03312d35baf7a06ebcb0e784d6348aecc628a015067eb0ff473d2c1
SHA512

3d22a0d43032a45cac2020fd3a187985f6087cdfb58e1ae06c02fd89f0becc4aebc4a71d63fe0528397af946ceb3618a0aa97b17f0e11ca963ed872fb570f7d1
SSDEEP

768:q7PdFecFS5agQtOOtEvwDpjeMLZdzuqpXsiE8Wq/DpkITYan8g:qDdFJy3QMOtEvwDpjjWMl7Tdn8g

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral1/memory/3008-1-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2860-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000b00000001227b-15.dat	CryptoLocker_rule2
behavioral1/memory/2860-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral1/memory/3008-1-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2860-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000b00000001227b-15.dat	CryptoLocker_set1
behavioral1/memory/2860-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral1/memory/3008-1-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2860-16-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x000b00000001227b-15.dat	UPX
behavioral1/memory/2860-26-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2860	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
3008	2024-06-01_32b2b3fd2a1a78370d4fec53bb7d2a14_cryptolocker.exe

UPX packed file 4 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral1/memory/3008-1-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2860-16-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x000b00000001227b-15.dat	upx
behavioral1/memory/2860-26-0x0000000000500000-0x0000000000510000-memory.dmp	upx

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 3008 wrote to memory of 2860	3008	2024-06-01_32b2b3fd2a1a78370d4fec53bb7d2a14_cryptolocker.exe	28
PID 3008 wrote to memory of 2860	3008	2024-06-01_32b2b3fd2a1a78370d4fec53bb7d2a14_cryptolocker.exe	28
PID 3008 wrote to memory of 2860	3008	2024-06-01_32b2b3fd2a1a78370d4fec53bb7d2a14_cryptolocker.exe	28
PID 3008 wrote to memory of 2860	3008	2024-06-01_32b2b3fd2a1a78370d4fec53bb7d2a14_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-06-01_32b2b3fd2a1a78370d4fec53bb7d2a14_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-01_32b2b3fd2a1a78370d4fec53bb7d2a14_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:3008
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2860

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\asih.exe

Filesize
40KB

MD5
2d8d68ca2ca9f506ac83dc4d0e6dbf9a

SHA1
83763c9371d827ca9fe309d189fafb9904a6ab59

SHA256
f4a0b67e2b1c32226972c60f69bfd1b13947fcb00ce0d54f11c31dce49cea0c3

SHA512
1851c415ce232a6ef0d166147174ec2839b12aa31f54805548dded7224ee1c5b03b913fd9680aa3ecc151f2ef551cd50962511f8b4b9204f4842a9c1a148250c

Download Submit
memory/2860-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2860-18-0x0000000000290000-0x0000000000296000-memory.dmp

Filesize
24KB

Download
memory/2860-25-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2860-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3008-2-0x0000000000300000-0x0000000000306000-memory.dmp

Filesize
24KB

Download
memory/3008-3-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/3008-1-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3008-0-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download