d6ab3bc6f8073aeda326bca9e85e8c2bec180c96c69e2268221b6c9720b3fcec

Analysis

max time kernel
148s
max time network
148s
platform
windows7_x64
resource
win7-20240508-en
resource tags

arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
submitted
09/06/2024, 07:31

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General

Target

2024-06-09_8dfeda6ff4cccee7dee5bc6daf26646f_cryptolocker.exe
Size

63KB
MD5

8dfeda6ff4cccee7dee5bc6daf26646f
SHA1

cfc5fee585f4f08158424d77694a60a617dd8829
SHA256

d6ab3bc6f8073aeda326bca9e85e8c2bec180c96c69e2268221b6c9720b3fcec
SHA512

d1684da10abaeae69c478c2fccc9fefa3795bd919c90a7cc2caf51d5c0e5c77cde4230ecbffc579a9aeab45a81c3fa337339965cd7e62e883fc9c21c8735308f
SSDEEP

1536:q6QFElP6n+gxmddpMOtEvwDpjpizbR9Xwzb:q6a+rdOOtEvwDpjwPvwf

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral1/memory/2268-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000b00000001225d-11.dat	CryptoLocker_rule2
behavioral1/memory/2268-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2916-25-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral1/memory/2268-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000b00000001225d-11.dat	CryptoLocker_set1
behavioral1/memory/2268-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2916-25-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral1/memory/2268-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x000b00000001225d-11.dat	UPX
behavioral1/memory/2268-15-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2916-25-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2916	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2268	2024-06-09_8dfeda6ff4cccee7dee5bc6daf26646f_cryptolocker.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2268-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x000b00000001225d-11.dat	upx
behavioral1/memory/2268-15-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2916-25-0x0000000000500000-0x0000000000510000-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 2268 wrote to memory of 2916	2268	2024-06-09_8dfeda6ff4cccee7dee5bc6daf26646f_cryptolocker.exe	28
PID 2268 wrote to memory of 2916	2268	2024-06-09_8dfeda6ff4cccee7dee5bc6daf26646f_cryptolocker.exe	28
PID 2268 wrote to memory of 2916	2268	2024-06-09_8dfeda6ff4cccee7dee5bc6daf26646f_cryptolocker.exe	28
PID 2268 wrote to memory of 2916	2268	2024-06-09_8dfeda6ff4cccee7dee5bc6daf26646f_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-06-09_8dfeda6ff4cccee7dee5bc6daf26646f_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-09_8dfeda6ff4cccee7dee5bc6daf26646f_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2268
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2916

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
63KB

MD5
ab3e91c20ee3f652cbc06051dd3d759e

SHA1
d24f80fe029b3750e6d928a17baf48a72266e7b7

SHA256
dcb09007b975140afa939e0264f17bec4566607ec69b69ad6f54f6a48975f09e

SHA512
a5af3dc5e0ca310f2a4cc64a11485d61e2ec27c3fa2069b9f1398babc06be3c1d5fe2995f1e12416473074f8ef62fdc38be7ad6623e54e876cf01dcc6bf9e4ca

Download Submit
memory/2268-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2268-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2268-2-0x0000000000370000-0x0000000000376000-memory.dmp

Filesize
24KB

Download
memory/2268-9-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2268-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2916-17-0x0000000000310000-0x0000000000316000-memory.dmp

Filesize
24KB

Download
memory/2916-25-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2916-24-0x00000000002D0000-0x00000000002D6000-memory.dmp

Filesize
24KB

Download