4f36558b30a0c30138d276ad1e5163e6e8c96fe67188a8eecc3b79c1d06925d5

Analysis

max time kernel
153s
max time network
160s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
05/04/2024, 20:34

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-04-05_5903c1818823ac32de496c08bf75e227_cryptolocker.exe
Size

63KB
MD5

5903c1818823ac32de496c08bf75e227
SHA1

b793839c76bbae1fd968585dabff7d34419378a8
SHA256

4f36558b30a0c30138d276ad1e5163e6e8c96fe67188a8eecc3b79c1d06925d5
SHA512

07695ad43c40f84e07c7e549bf803ddfbf7d573ca2f79b6f43e000c2f3802365990937e6ecf3f2f9dfcbe3c5696e6898dcf15b54d46095760934ddc2cbe02479
SSDEEP

768:zQz7yVEhs9+syJP6ntOOtEvwDpjFelaB7yBEY9Su8F5mnVwfX7:zj+soPSMOtEvwDpj4kpmeLmnw7

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 6 IoCs

resource	yara_rule
behavioral1/memory/840-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/840-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/840-13-0x00000000006F0000-0x0000000000700000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/3028-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x0008000000012247-11.dat	CryptoLocker_rule2
behavioral1/memory/3028-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral1/memory/840-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/840-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/3028-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x0008000000012247-11.dat	CryptoLocker_set1
behavioral1/memory/3028-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral1/memory/840-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/840-15-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/3028-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x0008000000012247-11.dat	UPX
behavioral1/memory/3028-27-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
3028	misid.exe

Loads dropped DLL 1 IoCs

pid	Process
840	2024-04-05_5903c1818823ac32de496c08bf75e227_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/840-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/840-15-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/3028-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x0008000000012247-11.dat	upx
behavioral1/memory/3028-27-0x0000000000500000-0x0000000000510000-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 840 wrote to memory of 3028	840	2024-04-05_5903c1818823ac32de496c08bf75e227_cryptolocker.exe	28
PID 840 wrote to memory of 3028	840	2024-04-05_5903c1818823ac32de496c08bf75e227_cryptolocker.exe	28
PID 840 wrote to memory of 3028	840	2024-04-05_5903c1818823ac32de496c08bf75e227_cryptolocker.exe	28
PID 840 wrote to memory of 3028	840	2024-04-05_5903c1818823ac32de496c08bf75e227_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-05_5903c1818823ac32de496c08bf75e227_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-05_5903c1818823ac32de496c08bf75e227_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:840
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:3028

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

Loading Replay Monitor...

Downloads

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

Filesize
64KB

MD5
7245ba12664d18f22df5f19cf0d0f207

SHA1
c8c5b447670cf8b874f1ff410c17c5a9dcd2dd76

SHA256
52f84d9f0f097069e683b0357ed604c297c028825c7b82dd8325979b7137ad81

SHA512
5afcb5223b915e56b54ad0d2a18a508f4e7c20131b8779aa093ed56b3fc9c3c24aa7f45a85373f2e4178f198dd5bc00ac0c49db446ce4d0213a8a78f6a44e265

Download Submit
memory/840-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/840-1-0x0000000000430000-0x0000000000436000-memory.dmp

Filesize
24KB

Download
memory/840-2-0x0000000000460000-0x0000000000466000-memory.dmp

Filesize
24KB

Download
memory/840-3-0x0000000000430000-0x0000000000436000-memory.dmp

Filesize
24KB

Download
memory/840-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/840-13-0x00000000006F0000-0x0000000000700000-memory.dmp

Filesize
64KB

Download
memory/3028-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3028-19-0x0000000000450000-0x0000000000456000-memory.dmp

Filesize
24KB

Download
memory/3028-26-0x0000000000420000-0x0000000000426000-memory.dmp

Filesize
24KB

Download
memory/3028-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download