0282ead0f3a8ddb56c12f523ac639748c724b71e26e58f1fd9811dd001e66c4c

Analysis

max time kernel
148s
max time network
148s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
03/02/2024, 23:23

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General

Target

2024-02-03_23b16ebc8739d1e888ff47556096989b_cryptolocker.exe
Size

48KB
MD5

23b16ebc8739d1e888ff47556096989b
SHA1

e69b69df2f9494b371c7f43d46271d8986c7e242
SHA256

0282ead0f3a8ddb56c12f523ac639748c724b71e26e58f1fd9811dd001e66c4c
SHA512

1c757558c8ec7a3d2df43d3238954a5f79a5ad2686fc1f5bb89bed1ac7b271e1c3fff257d91d437243294daed5159601969cc7ed03312ac0d8bec17421bc3b04
SSDEEP

1536:qmbhXDmjr5MOtEvwDpj5cDtKkQZQPdUvO:BbdDmjr+OtEvwDpjMXz

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 6 IoCs

resource	yara_rule
behavioral1/memory/2816-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000a000000013a1a-11.dat	CryptoLocker_rule2
behavioral1/memory/2816-13-0x0000000001E60000-0x0000000001E70000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/772-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2816-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/772-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral1/memory/2816-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/772-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2816-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/772-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 6 IoCs

resource	yara_rule
behavioral1/memory/2816-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x000a000000013a1a-11.dat	UPX
behavioral1/memory/2816-13-0x0000000001E60000-0x0000000001E70000-memory.dmp	UPX
behavioral1/memory/772-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2816-15-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/772-27-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
772	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2816	2024-02-03_23b16ebc8739d1e888ff47556096989b_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 2816 wrote to memory of 772	2816	2024-02-03_23b16ebc8739d1e888ff47556096989b_cryptolocker.exe	28
PID 2816 wrote to memory of 772	2816	2024-02-03_23b16ebc8739d1e888ff47556096989b_cryptolocker.exe	28
PID 2816 wrote to memory of 772	2816	2024-02-03_23b16ebc8739d1e888ff47556096989b_cryptolocker.exe	28
PID 2816 wrote to memory of 772	2816	2024-02-03_23b16ebc8739d1e888ff47556096989b_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-02-03_23b16ebc8739d1e888ff47556096989b_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-03_23b16ebc8739d1e888ff47556096989b_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2816
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:772

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

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Downloads

\Users\Admin\AppData\Local\Temp\asih.exe

Filesize
49KB

MD5
2bc184c8ca849016bce64e5bf05b6371

SHA1
d17bcda9381fad6107c6b62b01060b9d7e457c15

SHA256
87bf82047d9450abd482e672509bdaa02bed2600774552406f66d480dda0d805

SHA512
5cbdd86556e61d4ea9e1fdf808880b3b6338f186f2cf64ced361e4440febabc272228dda672a9325b68a1b74b55e9e7746fd139e0cbc966f3f6ad65a1c4ab59a

Download Submit
memory/772-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/772-19-0x0000000000210000-0x0000000000216000-memory.dmp

Filesize
24KB

Download
memory/772-21-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/772-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2816-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2816-1-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2816-2-0x0000000000310000-0x0000000000316000-memory.dmp

Filesize
24KB

Download
memory/2816-8-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2816-13-0x0000000001E60000-0x0000000001E70000-memory.dmp

Filesize
64KB

Download
memory/2816-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download